DISHWASHER AND METHOD OF CONTROLLING THE DISHWASHER

A dishwasher includes: a tub, a water storage chamber provided under the tub and configured to store water from inside the tub, a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber, a drain pump configured to discharge the water accommodated in the water storage chamber to the outside, and a controller including at least one processor, comprising processing circuitry. The controller may be configured to control the drain pump to discharge the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of a water supply operation or a jet operation.

BACKGROUND

Field

The disclosure relates to a dishwasher and method of controlling the dishwasher.

Description of Related Art

The dishwasher is a machine for automatically cleaning soiled dishes with a detergent and water.

The dishwasher may include a tub, a container disposed in the tub to receive dishes, a sump for storing water under the tub, and a filter for filtering out debris contained in water flowing to the sump.

When the filter is badly contaminated, washing effect of the dishwasher may decline and bad smell may occur. Accordingly, the filter needs to be cleaned periodically.

SUMMARY

Embodiments of the disclosure provide a dishwasher and method of controlling the dishwasher, which increases ease of use.

Embodiments of the disclosure provide a dishwasher and method of controlling the dishwasher, which is capable of automatically cleaning a filter.

Embodiments of the disclosure provide a dishwasher and method of controlling the dishwasher, which is capable of easily removing debris stuck to a filter by soaking the filter.

According to an example embodiment of the disclosure, a dishwasher may include: a tub; a water storage chamber provided under the tub and configured to store water from inside the tub; a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber; a drain pump configured to discharge the water accommodated in the water storage chamber to the outside; and a controller including at least one processor, comprising processing circuitry. The controller may be configured to control the drain pump to perform a drain operation of discharging the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of a water supply operation of supplying water into the water storage chamber or a jet operation of jetting water into the tub.

According to an example embodiment of the disclosure, a method of controlling a dishwasher is provided, wherein the dishwasher may include a tub, a water storage chamber provided to store water from inside the tub, a filter provided in the water storage chamber, a water supply valve, a drain pump and a circulation pump. The method of controlling the dishwasher may include: controlling the water supply valve to perform a water supply operation of supplying water into the water storage chamber or controlling the circulation pump to perform a jet operation of jetting the water stored in the water storage chamber into the tub. The method of controlling the dishwasher may include: controlling the drain pump to perform a drain operation of discharging the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of the water supply operation or the jet operation.

DETAILED DESCRIPTION

It is understood that the various example embodiments of the disclosure and associated terms are not intended to limit technical features herein to particular embodiments, but encompass various changes, equivalents, or substitutions.

Like reference numerals may be used for like or related elements throughout the drawings.

The singular form of a noun corresponding to an item may include one or more items unless the context states otherwise.

Throughout the disclosure, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “at least one of A, B, or C” may each include any one or all the possible combinations of A, B and C.

The expression “and/or” is understood to include a combination or any of associated elements.

Terms like “first”, “second”, etc., may be simply used to distinguish an element from another, without limiting the elements in a certain sense (e.g., in terms of importance or order).

When an element is mentioned as being “coupled” or “connected” to another element with or without an adverb “functionally” or “operatively”, it may refer, for example, to the element being connected to the other element directly (e.g., wiredly), wirelessly, or through a third element.

It will be further understood that the terms “comprise” and/or “comprising,” when used in this disclosure, specify the presence of stated features, integers, steps, operations, elements, parts or combinations thereof, but do not preclude the possible presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

When an element is described as being “connected to”, “coupled to”, “supported on” or “contacting” another element, it includes not only a case that the elements are directly connected to, coupled to, supported on or contact each other but also a case that the elements are connected to, coupled to, supported on or contact each other through a third element.

Throughout the disclosure, when an element is mentioned as being located “on” another element, it implies not only that the element is abut on the other element but also that a third element exists between the two elements.

A unit, module or member may be implemented in hardware or software. A plurality of units, modules or members may be implemented as one component, or a single unit, module or member may include multiple components.

The terms, such as “˜ part”, “˜ block”, “˜ member”, “˜ module”, etc., may refer to a unit of handling at least one function or operation. For example, the terms may refer to at least one process handled by hardware such as field-programmable gate array (FPGA)/application specific integrated circuit (ASIC), etc., software stored in a memory, or at least one processor.

Reference numerals used for method steps are just used to identify the respective steps, but not to limit an order of the steps. Thus, unless the context clearly dictates otherwise, the written order may also be practiced otherwise.

The terms “forward or front”, “rearward or back”, “left”, “right”, “upper or up” or “lower or down” as herein used are defined with respect to the drawings, but the terms may not restrict the shapes and position of the respective components. For example, the front may be defined as +X direction and the back may be defined as −X direction. For example, with respect to the drawings, the right may be defined as +Y direction and the left may be defined as −Y direction. For example, with respect to the drawings, the upper direction may be defined as +Z direction and the lower direction may be defined as −Z direction. For example, referring to FIGS. 1 and 2, the direction in which a door 11 of a dishwasher 1 opens may be defined as a forward direction (+X direction) and the opposite direction may be defined as a rearward direction (−X direction).

Reference will now be made in greater detail to various example embodiments of the disclosure, which are illustrated in the accompanying drawings.

FIG. 1 is a perspective view of a dishwasher, according to various embodiments. FIG. 2 is a side cross-sectional view of a dishwasher, according to various embodiments.

Referring to FIGS. 1 and 2, the dishwasher 1 may include a main body 10. The main body 10 may define an exterior of the dishwasher 1.

The dishwasher 1 may include a tub 12 provided within the main body 10. The tub 12 may form a washing room 10a. The tub 12 may be shaped substantially like a box. One side of the tub 12 may be open. That is, the tub 12 may include an open portion 12a. For example, the front side of the tub 12 may be open.

The dishwasher 1 may include the washing room 10a formed by the tub 12. The washing room 10a may be defined as an inner space of the tub 12. The washing room 10a may refer to a space where an object to be washed, which is placed in the tub 12, may be washed and dried.

The dishwasher 1 may include a machine room 10b provided under the tub 12. At least a portion of a sump 70, which will be described in greater detail below, may be disposed in the machine room 10b. The dishwasher 1 may include a base frame 16 that defines the machine room 10b.

The dish washer 1 may include the door 11. The door 11 may be provided to open or close the tub 12. The door 11 may be provided to open or close the open portion 12a of the tub 12. The door 11 may be provided to open or close the washing room 10a. The door 11 may be installed at the main body 10 to open or close the tub 12. The door 11 may be rotatably mounted on the main body 10. The door 11 may be detachably mounted on the main body 10.

The dishwasher 1 may include a container 50. The container 50 may be provided in the tub 12. The container 50 may accommodate dishes. The container 50 may receive the dishes. The container 50 may pile up the dishes. The container 50 may hold the dishes. The disclosure is not, however, limited thereto, and the container 50 may be provided to receive not only the dishes but also various items to be washed in the washing room 10a. For example, the container 50 may accommodate various objects to be washed.

The container 50 may include at least one basket to receive dishes. The container 50 may include at least one rack assemblies to receive dishes. As described above, the basket and/or rack assembly may receive not only the dishes but also various items to be washed in the washing room 10a. The basket and the rack assembly may be interchangeably used. The basket as will be mentioned below may also be referred to as the rack assembly.

For example, the container 50 may include a plurality of baskets 51, 52 and 53. The plurality of baskets 51, 52 and 53 may be provided to receive various dishes. It is not, however, limited thereto. For example, the container 50 may include some of the plurality of baskets 51, 52 and 53. For example, the container 50 may further include an extra basket in addition to the plurality of baskets 51, 52 and 53. For example, the container 50 may include a single basket.

The container 50 may include a middle basket 52 located in the middle of the height of the dishwasher 1. The middle basket 52 may be provided to be taken out of the tub 12 or put into the tub 12. For example, the middle basket 52 may be provided to be supported on a middle guide rack 13b. For example, the middle guide rack 13b may be installed on a side 12c of the tub 12 to be slidable toward the open portion 12a of the tub 12.

The container 50 may include a lower basket 51 located on a lower portion of the height of the dishwasher 1. The lower basket 51 may be provided to be taken out of the tub 12 or put into the tub 12. For example, the lower basket 51 may be provided to be supported on a lower guide rack 13a. For example, the lower guide rack 13a may be installed on the side 12c of the tub 12 to be slidable toward the open portion 12a of the tub 12.

Dishes having relatively large volume may be received in the plurality of baskets 51 and 52. However, the types of the dishes to be received in the plurality of baskets 51 and 52 are not limited to the dishes having relatively large volume. That is, not only the dishes having relatively large volume but also dishes having relatively small volume may be received in the plurality of baskets 51 and 52.

The container 50 may include an upper basket 53 located on an upper portion of the height of the dishwasher 1. The upper basket 53 may be formed in the shape of a rack assembly to receive dishes having relatively small volume. For example, the upper basket 53 may receive cooking tools or cutleries such as dippers, knives, turners, etc. For example, small cups such as espresso cups may be contained in the upper basket 53. However, the types of dishes to be received in the upper basket 53 are not limited thereto.

The upper basket 53 may be provided to be taken out of the tub 12 or put into the tub 12. For example, the upper basket 53 may slide by an upper guide rack 13c. For example, the upper basket 53 may be provided to be supported on the upper guide rack 13c. For example, the upper guide rack 13c may be installed on the side 12c of the tub 12.

The dishwasher 1 may include a jet device 40 provided to jet water. The jet device 40 may jet water into the tub 12. The jet device 40 may jet water into the washing room 10a. The jet device 40 may jet water toward objects to be washed, which are placed in the tub 12. The jet device 40 may jet water toward the dishes received in the container 50. The jet device 40 may receive water from a sump 70 which will be described in greater detail below and/or a duct 20 which will be described in greater detail below.

Throughout the disclosure, the term water may refer to both the water mixed with detergent (and/or softener) and the water not mixed with detergent (and/or softener).

The jet device 40 may include at least one jet unit. The jet device 40 may include a single jet unit or multiple jet units 41, 42 and 43.

For example, the jet device 40 may include the first jet unit 41 disposed underneath the lower basket 51 in the direction of height of the dishwasher 1. For example, the first jet unit 41 may be connected to the sump 70, and the water in the sump 70 may be supplied directly to the first jet unit 41. For example, the jet device 40 may include the second jet unit 42 disposed underneath the middle basket 52 in the direction of height of the dishwasher 1. For example, the second jet unit 42 may be connected to the duct 20, and the water in the sump 70 may be supplied to the second jet unit 42 through the duct 20. For example, the jet device 40 may include the third jet unit 43 disposed over the upper basket 53 in the direction of height of the dishwasher 1. For example, the third jet unit 43 may be connected to the duct 20, and the water in the sump 70 may be supplied to the third jet unit 43 through the duct 20.

The number of the jet units is not, however, limited to the example. The jet device 40 may include two or less jet unit. The jet device 40 may include four or more jet units.

Each of the plurality of jet units 41, 42 and 43 may be provided to jet water while being rotated. Each of the first jet unit 41, the second jet unit 42 and the third jet unit 43 may be provided to jet water while being rotated. The plurality of jet units 41, 42 and 43 may be referred to as a plurality of jet rotors 41, 42 and 43. The first jet unit 41, the second jet unit 42 and the third jet unit 43 may be referred to as the first jet rotor 41, the second jet rotor 42 and the third jet rotor 43, respectively.

However, the jet device 40 may jet water in a different manner than the aforementioned example. For example, unlike the second jet unit 42 and the third jet unit 43, the first jet unit 41 may be fixed to a lower surface 12b of the tub 12. In this case, the first jet unit 41 may be provided to substantially horizontally jet water through a fixed nozzle, and the water jetted substantially horizontally from the nozzle of the first jet unit 41 may be turned in a different direction by a switching assembly (not shown) disposed in the washing room 10a to move upward. The switching assembly may be installed on a rail (not shown) and may make translational movement along the rail. Although the first jet unit 41 was described as an example, the second jet unit 42 and the third jet unit 43 may also be provided to jet water using the fixed nozzle as in the aforementioned example.

The dishwasher 1 may include the sump 70. The sump 70 may be provided to accommodate water. The sump 70 may be provided to store water from inside the tub 12. The sump 70 may collect water from the washing room 10a. For example, the lower surface 12b of the tub 12 may be sloped down toward the sump 70 to easily collect the water. The water in the tub 12 may flow along the slope of the lower surface 12b of the tub 12 and smoothly flow into the sump 70.

The sump 70 may be provided to distribute the water stored in the sump 70 to the jet device 40. The sump 70 may provide the water in the sump 70 selectively to the jet device 40. The sump 70 may supply the stored water to at least one of the plurality of jet units 41, 42 and 43. The disclosure is not, however, limited thereto, and the sump 70 may not distribute the water to the jet device 40. For example, the dishwasher 1 may further include a distribution device distinguished from the sump 70. However, for convenience of explanation, an example where the sump 70 stores water and distributes the water to the jet device 40 will now be described.

The dishwasher 1 may include a duct 20. The duct 20 may be disposed in the tub 12. The duct 20 may be disposed in the washing room 10a. The duct 20 may guide the water in the tub 12. The duct 20 may deliver the water received from the sump 70 to the jet device 40. For example, the duct 20 may deliver the water flowing out of the sump 70 to the second jet unit 42 and the third jet unit 43.

The dishwasher 1 may include a filter assembly 30. The filter assembly 30 may be provided to filter the water flowing into the sump 70. The water filtered by the filter assembly 30 may be pumped by a circulation pump 61 to be supplied to the duct 20 and/or the jet device 40. The filter assembly 30 may be detachably mounted on the sump 70. For example, the filter assembly 30 may include at least one filter 310, 320 and/or 330. The filter assembly 30 will be described in detail in greater detail below.

The dishwasher 1 may include at least one pump 60. The at least one pump 60 may move the water stored in the sump 70. The at least one pump 60 may circulate or drain the water stored in the sump 70. For example, the dishwasher 1 may include at least one of the circulation pump 61 or a drain pump 62.

FIG. 3 is a perspective view illustrating a lower portion of a dishwasher, according to various embodiments. FIG. 4 is a perspective view illustrating a sump assembly of a dishwasher, according to various embodiments. FIG. 5 is an exploded perspective view illustrating the sump assembly of the dishwasher shown in FIG. 4 having a distribution cover and a distribution disc separated therefrom according to various embodiments. FIG. 6 is an exploded perspective view illustrating the sump assembly of the dishwasher shown in FIG. 4 having a filter assembly separated therefrom according to various embodiments. FIG. 7 is side cross-sectional view of the sump assembly of the dishwasher shown in FIG. 4 according to various embodiments.

The dishwasher 1 may include the sump 70, and components coupled to the sump 70 to move the water stored in the sump or secure/support the sump 70. The sump 70 and the components coupled to the sump 70 may be referred to as a sump assembly.

The sump 70 may include a sump housing 71. The sump housing 71 may be detachably coupled to the lower surface 12b of the tub 12. Most of the sump housing 71 may be placed in the machine room 10b.

The sump housing 71 may include a water storage chamber 711. The water storage chamber 711 may be provided to store water. The water storage chamber 711 may be disposed under the tub 12. The water storage chamber 711 may be provided to store water from inside the tub 12. The water flowing across the lower surface 12b of the tub 12 may be brought into the water storage chamber 711. Alternatively, the water storage chamber 711 may be provided to store water brought in from an external water source through a water supplier 715. The water storage chamber 711 may have a shape to contain water. The water storage chamber 711 may include a form with an upper portion open. The water storage chamber 711 may have a shape concaved downward.

The sump housing 71 may include a distribution chamber 712. The distribution chamber 712 may be separated from the water storage chamber 711. The distribution chamber 712 may be provided to accommodate water. The distribution chamber 712 may receive water pumped by the circulation pump 61. The distribution chamber 712 may accommodate water to be provided to the jet device 40. The water accommodated in the distribution chamber 712 may be provided to the jet device 40 through a distribution cover 73, which will be described in greater detail below. The distribution chamber 712 may include a flow path 712f formed to guide the water pumped by the circulation pump 61 to the jet device 40. The flow path 712f may also be referred to as the third flow path 712f to be distinguished from a first flow path 991 and a second flow path 992, which will be described in greater detail below. In the first to third flow paths 991, 992 and 712f, the modifiers ‘first’, ‘second’ and ‘third’ do not limit the components.

The sump housing 71 may include a chamber inlet 7121. The chamber inlet 7121 may be provided to communicate with the distribution chamber 712. The chamber inlet 7121 may extend from the distribution chamber 712. The water pumped by the circulation pump 61 may flow into the distribution chamber 712 through the chamber inlet 7121. The chamber inlet 7121 may guide the water pumped by the circulation pump 61 to the distribution chamber 712. For example, the water pumped by the circulation pump 61 may be supplied into the distribution chamber 712 through a connector 91, which will be described in greater detail below, and the chamber inlet 7121. A flow path (or space) formed inside the chamber inlet 7121 may be defined as a component included in the distribution chamber 712. For example, the flow path 712f may include a flow path extending from the chamber inlet 7121 to chamber outlets 731, 732 and/or 733, which will be described in greater detail below.

The water storage chamber 711 and the distribution chamber 712 are components of the sump housing 71 and shown as being integrally formed in the drawings. The disclosure is not, however, limited thereto. The storage chamber 711 and the distribution chamber 712 may be provided as separate components.

The sump housing 71 may include a circulation pump coupler 713 coupled to the circulation pump 61. The circulation pump coupler 713 may be provided to communicate with the water storage chamber 711. The water in the water storage chamber 711 may flow to the circulation pump 61 through the circulation pump coupler 713.

The sump housing 71 may include a drain pump coupler 714 connected to the drain pump 62. The drain pump coupler 714 may be provided to communicate with the water storage chamber 711. The water and debris in the water storage chamber 711 may flow to the drain pump 62 through the drain pump coupler 714.

The sump housing 71 may include the water supplier 715. The water supplier 715 may provide the water supplied from the external water source (not shown) to the water storage chamber 711. The water supplier 715 may be provided to communicate with the water storage chamber 711. A water supply valve 715a (see FIG. 24) may be provided in at least one flow path that connects the external water source to the water storage chamber 711.

The sump 70 may include a distribution valve 72. The distribution valve 72 may be provided to open or close the flow path 712f of the distribution chamber 712. While the distribution valve 72 opens the flow path 712f of the distribution chamber 712, the water pumped by the circulation pump 61 may flow into the distribution chamber 712. While the distribution valve 72 closes the flow path 712f of the distribution chamber 712, the water pumped by the circulation pump 61 may not flow into the distribution chamber 712.

The opening of the flow path 712f may refer not only to opening the flow path 712f completely but also to opening at least a portion of the flow path 712f to allow the water to flow through the flow path 712f. Closing the flow path 712f may refer not only to closing the flow path 712f completely but also to covering at least a portion of the flow path 712f to prevent water from flowing through the flow path 712f or to reduce the flow rate of the water flowing in the flow path 712f.

For example, the distribution valve 72 may include a distribution motor 721, a distribution shaft 722 and a distribution disc 723. The vibration motor 721 may produce rotational force. The distribution shaft 722 may connect the distribution motor 721 to the distribution disc 723. A first end of the distribution shaft 722 may be coupled with a motor shaft of the distribution motor 721. A second end of the distribution shaft 722 may be coupled with the distribution disc 722. The distribution shaft 722 may deliver the rotational force produced by the distribution motor 721 to the distribution disc 723. Without the distribution shaft 722, the distribution motor 721 and the distribution disc 723 may be directly connected as well. The distribution disc 723 may be provided to rotate according to the rotational force produced by the distribution motor 721. The distribution disc 723 may be placed inside the distribution chamber 712. The distribution disc 723 may open or close the flow path 712f while rotating inside the distribution chamber 712.

For example, the distribution disc 723 may include a communication hole 7231. When the communication hole 7231 of the distribution disc 723 is located to match the flow path 712f, the flow path 712f may be opened. The water pumped by the circulation pump 61 may flow to the distribution chamber 712. When the communication hole 7231 of the distribution disc 723 is located not to match the flow path 712f, the flow path 712f may be closed. In this case, the water pumped by the circulation pump 61 may not flow to the distribution chamber 712.

The disclosure is not, however, limited thereto, and the distribution valve 72 may include various well-known types of valves. The type and shape of the distribution valve 72 is not limited as long as the distribution valve 72 is able to open or close the flow path 712f of the distribution chamber 712.

The sump 70 may include the distribution cover 73. The distribution cover 73 may be provided to cover at least a portion of the sump housing 71. The distribution cover 73 may be provided to cover the distribution chamber 712. The distribution cover 73 may be detachably coupled to the sump housing 71. For example, distribution cover 73 may be rotatably coupled to the sump housing 71.

The distribution cover 73 may include at least one chamber outlet 731, 732 and/or 733. The water in the distribution cover 712 may flow out through the at least one chamber outlet 731, 732 and/or 733. While the distribution cover 73 is coupled with the sump housing 71, the at least one chamber outlet 731, 732 and/or 733 may be provided to communicate with the distribution chamber 712. While the distribution cover 73 is coupled with the sump housing 71, the at least one chamber outlet 731, 732 and/or 733 may be connected to the jet device 40 to supply the water in the distribution chamber 712 to the jet device 40. The chamber outlet 731, 732 and/or 733 may be referred to as an outlet 731, 732 and/or 733.

For example, the distribution cover 73 may include the plurality of chamber outlets 731, 732 and 733 corresponding to the plurality of jet units 41, 42 and 43, respectively. For example, the distribution cover 73 may include the first chamber outlet 731 connected to the first jet unit 41, the second chamber outlet 732 connected to the second jet unit 42 and the third chamber outlet 733 connected to the third jet unit 43. The first chamber outlet 731 may be connected directly to the first jet unit 41. The second chamber outlet 732 may be connected to the second jet unit 42 through the duct 20 (see FIG. 2). The third chamber outlet 733 may be connected to the third jet unit 43 through the duct 20 (see FIG. 2). The water in the distribution chamber 712 may flow out through the first chamber outlet 731 and flow to the first jet unit 41. The water in the distribution chamber 712 may flow out through the second chamber outlet 732 and flow into the duct 20, and the water brought into the duct 20 may flow to the second jet unit 42. The water in the distribution chamber 712 may flow out through the third chamber outlet 733 and flow into the duct 20, and the water brought into the duct 20 may flow to the third jet unit 43. The disclosure is not, however, limited to the example. For example, at least some of the plurality of chamber outlets 731, 732 and 733 may be integrally formed, and the water flowing out through the integrally formed structure may be branched while flowing.

The distribution cover 73 is shown as a separate component from the sump housing 71 in the drawings. The disclosure is not, however, limited thereto. Unlike what is shown, the distribution cover 73 and the sump housing 71 may be integrally formed. The distribution cover 73 may be provided as a component of the sump housing 71.

The dishwasher 1 may include the filter assembly 30. The filter assembly 30 may include the at least one filter 310, 320 and/or 330 to filter the water.

The filter assembly 30 may include the first filter 310. The first filter 310 may be disposed in the water storage chamber 711. The first filter 310 may be separated from the water storage chamber 711. The first filter 310 may be detachably mounted in the sump housing 71.

The first filter 310 may be provided to filter the water flowing into the water storage chamber 711. The first filter 310 may be provided to filter the water flowing in the water storage chamber 711. The first filter 310 may be provided to filter the water that has passed the second filter 320 and/or the third filter 330, as will be described in greater detail below. For example, the first filter 310 may be provided to filter off relatively small-sized debris as compared to the second filter 320 and the third filter 330. For example, the first filter 310 may be provided to filter off debris smaller in size than the debris filtered off by the second filter 320 and the third filter 330. For example, the first filter 310 may include a micro filter. The disclosure is not limited to the example, and the first filter 310 may be of any type as long as it is able to filter off the debris contained in the water and there is no limitation on the size of the debris to be filtered off by the first filter 310.

The water brought into the water storage chamber 711 may flow out of the first filter 310 from inside the first filter 310. As the water passes through the first filter 310, the debris contained in the water may be collected on the first filter 310. The debris contained in the water may be collected on the inner surface of the first filter 310. The debris contained in the water may be stuck to the inner surface of the first filter 310. The debris filtered off by the first filter 310 may be stacked inside the first filter 310. The water having passed the first filter 310 may be water from which the debris is removed. The water having passed the first filter 310 may be jetted to the tub 12 or circulated to the water storage chamber 711.

For example, the first filter 310 may have a cylindrical form with a cavity. For example, the first filter 310 may be provided to enclose the second filter 320. For example, the first filter 310 may be provided to cover at least a portion of the outer surface of the second filter 320.

The first filter 310 may be provided to be rotatable in the water storage chamber 711. The first filter 310 may be rotated during a filter cleaning operation (filter cleaning mode). This will be described in more detail in greater detail below.

The filter assembly 30 may include the second filter 320. At least a portion of the second filter 320 may be disposed in the water storage chamber 711. At least a portion of the second filter 320 may be enclosed by the first filter 310. While the at least a portion of the second filter 320 is placed inside the water storage chamber 711, the other portion of the second filter 320 may be disposed inside the tub 12. The second filter 320 may be detachably mounted on the sump housing 71.

The second filter 320 may be provided to filter off debris contained in the water toward the sump 70 from the tub 12. The second filter 320 may be provided to filter off relatively large-sized debris as compared to the first filter 310. For example, the second filter 320 may be provided to filter off debris larger in size than the debris filtered off by the first filter 310. For example, the second filter 320 may include a coarse filter. The disclosure is not limited to the example, and the second filter 320 may be of any type as long as it is able to filter off the debris contained in the water and there is no limitation on the size of the debris to be filtered off by the second filter 320.

The filter assembly 30 may include the third filter 330. The third filter 330 may be detachably mounted in the tub 12. For example, the third filter 330 may be placed on the lower surface 12b of the tub 12. For example, the third filter 330 may have the shape of almost a plate.

The third filter 330 may be provided to filter off debris contained in the water toward the sump 70 from the tub 12. The third filter 330 may be provided to filter off relatively large-sized debris as compared to the first filter 310. The third filter 330 may be provided to filter off relatively small-sized debris as compared to the second filter 320. For example, the third filter 330 may be provided to filter off debris larger in size than the debris filtered off by the first filter 310. For example, the third filter 330 may be provided to filter off debris smaller in size than the debris filtered off by the second filter 320. For example, the third filter 330 may include a fine filter. The disclosure is not limited to the example, and the third filter 330 may be of any type as long as it is able to filter off the debris contained in the water and there is no limitation on the size of the debris to be filtered off by the third filter 330.

In the first to third filters 310, 320 and 330, the modifiers ‘first’, ‘second’ and ‘third’ do not limit the components. For example, the first filter 310, the second filter 320 and the third filter 330 may be referred to as the filter 310, the filter 320 and the filter 330, respectively.

The filter assembly 30 may include a filter cover 340. The filter cover 34 may be provided to cover a portion of the at least one filter 310, 320 and/or 330. This may prevent or block a relatively large-sized mass of debris from flowing into the water storage chamber 711. The filter cover 340 may be detachably mounted on the inner side of the second filter 320. The filter cover 340 may be provided to cover a portion of the inside of the second filter 320.

The filter assembly 30 may include a filter motor 350. The filter motor 350 may be provided to rotate the first filter 310. The filter motor 350 may produce rotational force to rotate the first filter 310. The filter motor 350 may include a motor shaft 351. The motor shaft 351 may be substantially the same as a rotation axis of the first filter 310.

The filter assembly 30 may include a motor cover 360. The motor cover 360 may be provided to cover the filter motor 350 to prevent and/or reduce water from permeating into the filter motor 350. For example, the motor cover 360 may have a slope, and the water may flow along the slope without flowing into the filter motor 350.

The filter assembly 30 may include a connection shaft 370. The connection shaft 370 may deliver the rotational force produced by the filter motor 350 to the first filter 310. The connection shaft 370 may be provided to rotate along with the filter motor 350. One end of the connection shaft 370 may be coupled with the motor shaft 351 of the filter motor 350. The connection shaft 370 may be aligned with the motor shaft 351. The connection shaft 370 may define the rotation axis of the first filter 310. The connection shaft 370 may be coupled to a rotation frame 380 as will be described in greater detail below. The connection shaft 370 may be inserted to a cavity 320a of the second filter 320. At least a portion of the connection shaft 370 may pass through a shaft hole 718 formed at the sump housing 71 and may be coupled to the rotation frame 380 and the second filter 320. The connection shaft 370 may have a form that extends substantially in the vertical direction (direction Z).

The filter assembly 30 may include the rotation frame 380. The rotation frame 380 may be provided to connect the first filter 310 to the connection shaft 370. The rotation frame 380 may deliver the rotational force of the connection shaft 370 to the first filter 310. The rotation frame 380 may be coupled to the connection shaft 370 and provided to rotate along with the connection shaft 370. The first filter 310 may be coupled to the rotation frame 380 and provided to rotate along with the rotation frame 380. The rotation frame 380 may be coupled to the lower end of the first filter 310.

The filter assembly 30 may include a shaft fixer 390. The shaft fixer 390 may be coupled to the other end of the connection shaft 370. The shaft fixer 390 may prevent or inhibit the connection shaft 380 inserted to the cavity 320a of the second filter 320 from being separated from the cavity 320a of the second filter 320.

The filter assembly 30 may include an elastic member 3100. The elastic member 3100 may reduce friction between the first filter 310 and other components adjacent to the first filter 310. The elastic member 3100 may be coupled to an upper end of the first filter 310.

The dishwasher 1 may include a sealing member 300. The sealing member 300 may prevent and/or reduce a water leak between the filter assembly 30 and the sump 70. For example, the sealing member 300 may be disposed between the connection shaft 370 and the sump housing 71. For example, the sealing member 300 may have the form of almost a ring.

The dishwasher 1 may include a support plate 80. The support plate 80 may be provided to support at least a portion of the filter assembly 30. The support plate 80 may be provided to support one side of the third filter 330. The support plate 80 may be detachably mounted at the tub 12. The support plate 80 may be provided to cover at least a portion of the sump housing 71.

The support plate 80 may include a plate body 81. For example, the plate body 81 may have the shape of almost a semi-circle. For example, the plate body 81 may include a plurality of holes and may serve as a kind of filter.

The support plate 80 may include a plate opening 82. The plate opening 82 may be formed to bore through the plate body 81. The plate opening 82 may be provided to match the distribution chamber 712.

The support plate 80 may include a sitting portion 83. The sitting portion 83 may be provided to support one side of the third filter 330. The sitting portion 83 may be formed on an edge of the plate body 81. The sitting portion 83 may be formed to be stepped from the plate body 81. The sitting portion 83 may have a shape concaved from the upper surface of the plate body 81.

The dishwasher 1 may include a circulation pump 61. The circulation pump 61 may be provided to pump the water stored in the sump 70. The circulation pump 61 may be provided to pump the water accommodated in the water storage chamber 711. The water pumped by the circulation pump 61 may flow into the distribution chamber 711, or may be circulated and may flow into the water storage chamber 711. This will be described in more detail below. The circulation pump 61 may be disposed in the machine room 10b (see FIG. 2).

The circulation pump 61 may include a pump inlet 611 and a pump outlet 612. The water accommodated in the water storage chamber 711 may flow into the circulation pump 61 through the pump inlet 611. The water in the circulation pump 61 may flow out through the pump outlet 612. The pump inlet 611 may be referred to as the inlet 611. The pump outlet 612 may be referred to as the outlet 612.

The dishwasher 1 may include a drain pump 62. The drain pump 62 may drain the water stored in the sump 70. The drain pump 62 may discharge the water accommodated in the water storage chamber 711 to the outside. The water pumped by the drain pump 62 and debris contained in the water (e.g., food residue) may be discharged to the outside. The drain pump 62 may be disposed in the machine room 10b (see FIG. 2).

FIG. 8 is a perspective view illustrating a portion of a dishwasher, according to various embodiments. FIG. 9 is a perspective view illustrating the portion of the dishwasher shown in FIG. 8, viewed from a different direction according to various embodiments. FIG. 10 illustrates the portion of the dishwasher shown in FIG. 8, viewed from a different direction from that of FIG. 9 according to various embodiments. FIG. 11 is a diagram illustrating a bottom view of the portion of the dishwasher shown in FIG. 8 according to various embodiments. FIG. 12 is an exploded perspective view illustrating the portion of the dishwasher shown in FIG. 8 having a circulation pump, a drain pump and a flow path structure separated therefrom according to various embodiments. FIG. 13 is an exploded perspective view illustrating the portion of the dishwasher shown in FIG. 8 having the circulation pump, the drain pump and the flow path structure separated therefrom according to various embodiments. FIG. 14 is an exploded perspective view illustrating the portion of the dishwasher shown in FIG. 8 having a circulation pump, a drain pump and a flow path structure separated therefrom according to various embodiments.

The dishwasher 1 may include the connector 91. The connector 91 may receive the water pumped by the circulation pump 61. The connector 91 may accommodate the water flowing out of the circulation pump 61. The connector 91 may be provided to guide the water flowing out of the circulation pump 61 to the distribution chamber 712 or to a connection pipe 92, which will be described in greater detail below.

The connector 91 may include a connector inlet 911. The inlet 911 of the connector 91 may be detachably coupled to the pump outlet 612 of the circulation pump 61. The connector inlet 911 of the connector 91 may be connected to the pump outlet 612 of the circulation pump 61. The water flowing out of the pump outlet 612 of the circulation pump 61 may flow to the connector inlet 911 of the connector 91. The connector inlet 911 may be referred to as the inlet 911.

The connector 91 may include a first connector outlet 912. The first connector outlet 912 of the connector 91 may be detachably coupled to a chamber inlet 7121 of the sump 70. The first connector outlet 912 may be connected to the chamber inlet 7121 of the sump 70. The water flowing into the connector inlet 911 may flow to the distribution chamber 712 through the first connector outlet 912. For example, the first connector outlet 912 may extend in a direction that substantially crosses the connector inlet 911. The first connector outlet 912 may be referred to as the outlet 912.

The connector 91 may include a second connector outlet 913. The second connector outlet 913 of the connector 91 may be detachably coupled to the connection pipe 92, which will be described in greater detail below. The second connector outlet 913 of the connector 91 may be connected to the connection pipe 92. The water flowing into the connector inlet 911 may flow to the connection pipe 92 through the second connector outlet 913. For example, the second connector outlet 913 may be branched between the connector inlet 911 and the first connector outlet 912. The second connector outlet 913 may be referred to as the outlet 913.

The dishwasher 1 may include the connection pipe 92. The connection pipe 92 may receive the water flowing out of the connector 91. The water pumped by the circulation pump 61 through the connector 91 may pass the connector 91 and flow to the connection pipe 92. The connection pipe 92 may connect the connector 91 to a first guide pipe 93 which will be described in greater detail below. The connection pipe 92 may guide the water flowing out of the connector 91 to the first guide pipe 93. The connection pipe 92 may connect the connector 91 to a second guide pipe 96 which will be described in greater detail below. The connection pipe 92 may guide the water flowing out of the connector 91 to the second guide pipe 96.

For example, the connection pipe 92 may include a first connector 921, a second connector 922, a third connector 923, a fourth connector 924 and a fifth connector 925.

The first connector 921 may be detachably coupled to the second connector outlet 913 of the connector 91. The first connector 921 may be connected to the second connector outlet 913 of the connector 91. The first connector 921 may receive water from the connector 91.

The second connector 922 may be detachably coupled to a first flow path valve 94, which will be described in greater detail below. The second connector 922 may be provided to communicate with the first connector 921. The second connector 922 may be provided to communicate with the third connector 923.

The third connector 923 may extend from the second connector 922. The third connector 923 may extend downward from the second connector 922. The third connector 923 may be connected to the first guide pipe 93.

The water flowing into the first connector 921 may pass the second connector 922 and the third connector 923 and flow to the first guide pipe 93.

A second flow path valve 97, which will be described in greater detail below, may be detachably coupled to the fourth connector 924. The fourth connector 924 may be provided to communicate with the first connector 921. The fourth connector 924 may be provided to communicate with the fifth connector 925.

The fifth connector 925 may extend from the fourth connector 924. The fifth connector 925 may extend downward from the fourth connector 924. The fifth connector 925 may be connected to the second guide pipe 96.

The water flowing into the first connector 921 may pass the fourth connector 924 and the fifth connector 925 and flow to the second guide pipe 96.

For example, the connection pipe 92 may include a fixed portion 926. The fixed portion 926 may be fixed to the sump 70. The fixed portion 926 may be fixed to the sump housing 71.

The dishwasher 1 may include the first guide pipe 93. The first guide pipe 93 may guide the water pumped by the circulation pump 61 to the water storage chamber 711. The first guide pipe 93 may supply the water pumped by the circulation pump 61 to a first cleaning nozzle 95, which will be described in greater detail below. The first guide pipe 93 may be provided to connect to the connection pipe 92 and the first cleaning nozzle 95. For example, a first end 931 of the first guide pipe 93 may be detachably coupled to the third connector 923 of the connection pipe 92. For example, a second end 932 of the first guide pipe 93 may be detachably coupled to the first cleaning nozzle 95.

The dishwasher 1 may include the first flow path valve 94. The first flow path valve 94 may be provided to open or close the first flow path 991 to guide the water pumped by the circulation pump 61 to the water storage chamber 711. The first flow path 991 may include a flow path extending from the circulation pump 61 to the water storage chamber 711. The first flow path 991 may include a flow path extending from the pump outlet 612 of the circulation pump 61 to the first cleaning nozzle 95. For example, the first flow path 991 may include at least one of a flow path formed between the connector inlet 911 and the second connector outlet 913, a flow path formed between the first connector 921 and the second connector 922, a flow path formed between the second connector 922 and the third connector 923 or a flow path formed by the first guide pipe 93.

At least a portion of the first flow path valve 94 may be located in the first flow path 991. Although the first flow path valve 94 is shown as being mounted at the second connector 922 of the connection pipe 92 in the drawings, the disclosure is not limited thereto. The first flow path valve 94 may be located in any place that may open or close the first flow path 991.

The opening of the first flow path 991 may refer not only to opening the first flow path 991 completely but also to opening at least a portion of the first flow path 991 to allow the water to flow through the first flow path 991. The closing of the first flow path 991 may refer not only to closing the first flow path 991 completely but also to covering at least a portion of the first flow path 991 to prevent or block the water from flowing through the first flow path 991 or reduce the flow rate of the water flowing in the first flow path 991.

The dishwasher 1 may include the first cleaning nozzle 95. The first cleaning nozzle 95 may be provided to communicate with the water storage chamber 711. The first cleaning nozzle 95 may be provided to jet the water guided through the first flow path 991 toward the first filter 310. For example, the first cleaning nozzle 95 may jet the water to a relatively lower portion of the first filter 310. For example, the water jetted through the first cleaning nozzle 95 may have more than a certain level of water pressure.

The first cleaning nozzle 95 may be provided to jet the water toward the outer surface of the first filter 310. The outer surface of the first filter 310 is a surface reverse to the inner surface of the first filter 310 on which debris is collected. The water jetted from the first cleaning nozzle 95 may flow to the inside of the first filter 310 from outside of the first filter 310. As the water jetted from the first cleaning nozzle 95 passes the first filter 310, the debris stuck to the first filter 310 may be separated from the first filter 310. For example, as the first cleaning nozzle 95 jets water toward the side reverse to the side where the debris in the filter 310 is collected, the debris may be easily removed from the first filter 310. This may increase cleaning efficiency of the first filter 310.

The first cleaning nozzle 95 may include a first jet hole 951. For example, the first jet hole 951 may have the form of a slit. For example, the jet hole 951 may have the form of a slit extending substantially vertically (in the direction Z). For example, the first jet hole 951 may be referred to as the first slit 951.

The first cleaning nozzle 95 may be detachably coupled to the sump 70. The first cleaning nozzle 95 may be mounted on a first nozzle mounting portion 716 formed on the sump housing 71. For example, the first nozzle mounting portion 716 may include a first sump opening 7161 open to the water storage chamber 711 and a first coupler 7162 provided around the first sump opening 7161. For example, the first cleaning nozzle 95 may have a shape that matches the first sump opening 7161. For example, the first cleaning nozzle 95 may include a second coupler 952 that may be coupled to the first coupler 7162. For example, the first coupler 7162 and the second coupler 952 may each include a coupling hole, and a screw may be fastened to the coupling hole of the first coupler 7162 and the coupling hole of the second coupler 952. The disclosure is not, however, limited to the example, and the first cleaning nozzle 95 may be coupled to the sump 70 in various well-known coupling methods.

While the first cleaning nozzle 95 is coupled to the sump 70, a side of the first cleaning nozzle 95 facing the water storage chamber 711 may be connected to the inner surface of the sump housing 71. The side of the first cleaning nozzle 95 facing the water storage chamber 71 may protrude from the inner surface of the sump housing 71 or may not sunken within a certain error range.

The dishwasher 1 may include the second guide pipe 96. The second guide pipe 96 may be distinguished from the first guide pipe 93. The second guide pipe 96 may guide the water pumped by the circulation pump 61 to the water storage chamber 711. The second guide pipe 96 may supply the water pumped by the circulation pump 61 to a second cleaning nozzle 98, which will be described in greater detail below. The second guide pipe 96 may be provided to connect to the connection pipe 92 and the second cleaning nozzle 98. For example, a first end 961 of the second guide pipe 96 may be detachably coupled to the fifth connector 925 of the connection pipe 92. For example, a second end 962 of the second guide pipe 96 may be detachably coupled to the second cleaning nozzle 98.

The dishwasher 1 may include the second flow path valve 97. The second flow path valve 97 may be provided to open or close the second flow path 992 to guide the water pumped by the circulation pump 61 to the water storage chamber 711. The second flow path 992 may be distinguished from the first flow path 991. The second flow path 992 may include a flow path extending from the circulation pump 61 to the water storage chamber 711. The second flow path 992 may include a flow path extending from the pump outlet 612 of the circulation pump 61 to the second cleaning nozzle 98. For example, the second flow path 992 may include at least one of a flow path formed between the connector inlet 911 and the second connector outlet 913, a flow path formed between the first connector 921 and the fourth connector 924, a flow path formed between the fourth connector 924 and the fifth connector 925 or a flow path formed by the second guide pipe 96.

At least a portion of the second flow path valve 97 may be located in the second flow path 992. Although the second flow path valve 97 is shown as being mounted at the fourth connector 924 of the connection pipe 92 in the drawings, the disclosure is not limited thereto. The second flow path valve 97 may be located in any place that may open or close the second flow path 992.

The opening of the second flow path 992 may refer not only to opening the second flow path 992 completely but also to opening at least a portion of the second flow path 992 to allow the water to flow through the second flow path 992. The closing of the second flow path 992 may refer not only to closing the second flow path 992 completely but also to covering at least a portion of the second flow path 992 to prevent or block the water from flowing through the second flow path 992 or reduce the flow rate of the water flowing in the second flow path 992.

The dishwasher 1 may include a second cleaning nozzle 98. The second cleaning nozzle 98 may be provided to communicate with the water storage chamber 711. The second cleaning nozzle 98 may be provided to jet the water guided through the second flow path 992 toward the first filter 310. For example, the second cleaning nozzle 98 may jet the water to a relatively upper portion of the first filter 310. For example, the water jetted through the second cleaning nozzle 98 may have more than a certain level of water pressure.

The second cleaning nozzle 98 may be provided to jet the water toward the outer surface of the first filter 310. The water jetted from the second cleaning nozzle 98 may flow to the inside of the first filter 310 from outside of the first filter 310. As the water jetted from the second cleaning nozzle 98 passes the first filter 310, the debris stuck to the first filter 310 may be separated from the first filter 310. Specifically, as the second cleaning nozzle 98 jets water toward the side reverse to the side where the debris in the filter 310 is collected, the debris may be easily removed from the first filter 310. This may increase cleaning efficiency of the first filter 310.

The second cleaning nozzle 98 may include a second jet hole 981. For example, the second jet hole 981 may have the form of a slit. For example, the jet hole 951 may have the form of a slit extending substantially vertically (in the direction Z). For example, the second jet hole 981 may be referred to as the second slit 981.

The second cleaning nozzle 98 may be detachably coupled to the sump 70. The second cleaning nozzle 98 may be mounted on a second nozzle mounting portion 717 formed on the sump housing 71. For example, the second nozzle mounting portion 717 may include a second sump opening 7171 open to the water storage chamber 711 and a third coupler 7172 provided around the second sump opening 7171. For example, the second cleaning nozzle 98 may have a shape that matches the second sump opening 7171. For example, the second cleaning nozzle 98 may include a fourth coupler 982 that may be coupled to the third coupler 7172. For example, the third coupler 7172 and the fourth coupler 982 may each include a coupling hole, and a screw may be fastened to the coupling hole of the third coupler 7172 and the coupling hole of the fourth coupler 982. The disclosure is not, however, limited to the example, and the second cleaning nozzle 98 may be coupled to the sump 70 in various well-known coupling methods.

While the second cleaning nozzle 98 is coupled to the sump 70, a side of the second cleaning nozzle 98 facing the water storage chamber 711 may be connected to the inner surface of the sump housing 71. The side of the second cleaning nozzle 98 facing the water storage chamber 711 may protrude from the inner surface of the sump housing 71 or may not be sunken within a certain error range.

Although the connector 91, the connection pipe 92, the first guide pipe 93 and the second guide pipe 96 are shown as separate components in the drawings, the disclosure is not limited thereto. For example, at least some of the connector 91, the connection pipe 92, the first guide pipe 93 and the second guide pipe 96 may be integrally formed. For example, a portion of the connection pipe 92 and the first guide pipe 93 may be integrally formed. For example, a portion of the connection pipe 92 and the second guide pipe 96 may be integrally formed. For example, the connection pipe 92, the first guide pipe 93 and the second guide pipe 96 may be integrally formed. For example, the connector 91, the connection pipe 92, the first guide pipe 93 and the second guide pipe 96 may be integrally formed into a single component. In a case that at least one flow path connected from the circulation pump 61 to the water storage chamber 711 may be formed, it is apparent that the disclosure may include various combinations of connectors, hoses, pipes, etc.

FIG. 15 is a perspective view illustrating a filter cleaning structure of a dishwasher, according to various embodiments. FIG. 16 is a perspective view illustrating the filter cleaning structure of the dishwasher shown in FIG. 15, which is viewed from a different direction according to various embodiments.

Referring to FIGS. 15 and 16, the first cleaning nozzle 95 and the second cleaning nozzle 98 may be spaced apart from each other. For example, the first cleaning nozzle 95 and the second cleaning nozzle 98 may be provided to be spaced apart in the circumferential direction of the first filter 310. The first cleaning nozzle 95 and the second cleaning nozzle 98 may be disposed not to interfere with each other.

The first cleaning nozzle 95 may be provided to jet water toward a first area of the first filter 310. The second cleaning nozzle 98 may be provided to jet water toward a second area of the first filter 310, which is different from the first area of the first filter 310.

For example, the first cleaning nozzle 95 may be provided to clean a relatively lower portion of the first filter 310, and the second cleaning nozzle 98 may be provided to clean a relatively upper portion of the first filter 310. For example, the second jet hole 981 of the second cleaning nozzle 98 may be disposed above at least a portion of the first jet hole 951 of the first cleaning nozzle 95. For example, the lower end of the second jet hole 981 may be located above the lower end of the first jet hole 951. For example, the upper end of the second jet hole 981 may be located above the upper end of the first jet hole 951. For example, the lower end of the second jet hole 981 may be located under, above or at almost the same height as the upper end of the first jet hole 951. However, this is merely an example, and it is apparent that each of the first cleaning nozzle 95 and the second cleaning nozzle 98 may jet water to various directions to clean the first filter 310.

For example, the first jet hole 951 of the first cleaning nozzle 95 and the second jet hole 981 of the second cleaning nozzle 98 may each be disposed to face almost the center of the first filter 310. For example, the first jet hole 951 of the first cleaning nozzle 95 and the second jet hole 981 of the second cleaning nozzle 98 may be disposed to face the rotation axis of the first filter 310.

For example, the first jet hole 951 of the first cleaning nozzle 95 may have a form that extends substantially vertically (in the direction Z). For example, the second jet hole 981 of the second cleaning nozzle 98 may have a form that extends substantially vertically (in the direction Z). The disclosure is not, however, limited to the above examples. For example, the first jet hole 951 may have a form that extends along the almost circumferential direction of the first filter 310. For example, the second jet hole 981 may have a form that extends along the almost circumferential direction of the first filter 310. For example, the extension length of the first jet hole 951 may be the same as or different from the extension length of the second jet hole 981. For example, at least one of the first jet hole 951 or the second jet hole 981 may have various forms such as a straight line, a curved line, a circle, a polygon, etc.

For example, the first cleaning nozzle 95 may include one or multiple first jet holes 951. For example, the multiple first jet holes 951 may be made up with a plurality of holes. In the case that the first cleaning nozzle 95 includes the multiple first jet holes 951, the multiple first jet holes 951 may have the same or different shapes. In the case that the first cleaning nozzle 95 includes the multiple first jet holes 951, some of the multiple first jet holes 951 may be different in shape from the others.

For example, the second cleaning nozzle 98 may include one or multiple second jet holes 981. For example, the multiple second jet holes 981 may be made up with a plurality of holes. In the case that the second cleaning nozzle 98 includes the multiple second jet holes 981, the multiple second jet holes 981 may have the same or different shapes. In the case that the second cleaning nozzle 98 includes the multiple second jet holes 981, some of the multiple second jet holes 981 may be different in shape from the others.

Although an example where the dishwasher 1 includes the first cleaning nozzle 95 and the second cleaning nozzle 98 is shown in the drawings, the disclosure is not limited thereto. The dishwasher 1 may include one cleaning nozzle or three or more cleaning nozzles.

For example, the dishwasher 1 may include only one of the first cleaning nozzle 95 and the second cleaning nozzle 98. In a case that the dishwasher 1 includes only the first cleaning nozzle 95, the second cleaning nozzle 98 and the associated components (e.g., the second guide pipe 96, the second flow path valve 97 and the second flow path 992) may be omitted. In a case that the dishwasher 1 includes only the second cleaning nozzle 98, the first cleaning nozzle 95 and the associated components (e.g., the first guide pipe 93, the first flow path valve 94 and the first flow path 991) may be omitted.

For example, the dishwasher 1 may further include at least one additional cleaning nozzle (not shown) in addition to the first cleaning nozzle 95 and the second cleaning nozzle 98. For example, the dishwasher 1 may further include an additional flow path to guide the water pumped by the circulation pump 61 to the additional cleaning nozzle, and an additional flow path valve to open or cover the additional flow path. The additional flow path may be separated from the first flow path 991 and the second flow path 992 or branched from at least one of the first flow path 991 or the second flow path 992. For example, the additional cleaning nozzle may be disposed not to interfere with the first cleaning nozzle 95 and the second cleaning nozzle 98. For example, the additional cleaning nozzle may jet water toward an upper, lower or middle area of the first filter 310 as needed. For example, the first cleaning nozzle 95 and the additional cleaning nozzle may jet water toward the lower portion of the first filter 310, and the second cleaning nozzle 98 may jet water toward the upper portion of the first filter 310. For example, the first cleaning nozzle 95 may jet water toward the lower portion of the first filter 310 and the second cleaning nozzle 98 and the additional cleaning nozzle may jet water toward the upper portion of the first filter 310.

FIG. 17 is a diagram illustrating water flowing into a circulation pump according to various embodiments.

Referring to FIG. 17, the water in the tub 12 may flow into the water storage chamber 711 of the sump 70. The water may pass the at least one filter 310, 320 and/or 330 while flowing to the water storage chamber 711. The water may be filtered while flowing to the water storage chamber 711. The water stored in the water storage chamber 711 may be pumped by the circulation pump 61. The water stored in the water storage chamber 711 may flow to the pump inlet 611 of the circulation pump 61 according to pumping power of the circulation pump 61.

FIG. 18 is a diagram illustrating water pumped by a circulation pump flowing in a water supply operation or jet operation according to various embodiments. FIG. 19 is a diagram illustrating water pumped by a circulation pump flowing in a water supply operation or jet operation according to various embodiments.

Referring to FIGS. 18 and 19, in a water supply operation or a jet operation, the water pumped by the circulation pump 61 may flow to the distribution chamber 712. As will be described in greater detail below, the water supply operation may include an operation of supplying water to the water storage chamber 711, and the jet operation may include an operation of jetting water into the tub 12. For example, the jet operation may include an operation of washing or rinsing an object (e.g., dishes) to be washed placed in the tub 12 by jetting water toward the object. For the water supply operation or jet operation of the dishwasher 1, the first flow path valve 94 may close the first flow path 991. The second flow path valve 97 may close the second flow path 992. The distribution valve 72 may open the third flow path 712f. For example, as the communication hole 7231 of the distribution disc 723 is provided in the third flow path 712f, the third flow path 712f may be opened. As the first flow path 991 and the second flow path 992 are closed and the third flow path 712f is opened, the water pumped by the circulation pump 61 may flow to the open third flow path 712f. The water pumped by the circulation pump 61 may pass the connector 91 and flow into the distribution chamber 712. The water in the distribution chamber 712 may be provided to the jet device 40 through the distribution cover 73. The jet device 40 may jet the water provided from the sump 70 to the tub 12. Accordingly, the water supply operation or jet operation of the dishwasher 1 may be performed.

FIG. 20 is a diagram illustrating water pumped by a circulation pump flowing in cleaning a lower portion of a filter according to various embodiments. FIG. 21 is a sectional perspective view illustrating water jetted by a first cleaning nozzle in cleaning a lower portion of a filter according to various embodiments.

Referring to FIGS. 20 and 21, in cleaning the lower portion of the first filter 310, the water pumped by the circulation pump 61 may flow to the first flow path 991. For the cleaning of the lower portion of the first filter 310, the first flow path valve 94 may open the first flow path 991. The second flow path valve 97 may close the second flow path 992. The distribution valve 72 may close the third flow path 712f. For example, as a portion without the communication hole 7231 of the distribution disc 723 is provided in the third flow path 712f, the third flow path 712f may be closed. As the first flow path 991 is open and the second flow path 992 and the third flow path 712f are closed, the water pumped by the circulation pump 61 may flow to the open first flow path 991. The water pumped by the circulation pump 61 may pass the connector 91 and the connection pipe 92 and flow to the first guide pipe 93. The water guided by the first guide pipe 93 may be jetted toward the first filter 310 through the first cleaning nozzle 95. The first cleaning nozzle 95 may jet the water toward the lower portion of the first filter 310.

FIG. 22 is a diagram illustrating water pumped by a circulation pump flowing in cleaning an upper portion of a filter according to various embodiments. FIG. 23 is a sectional perspective view illustrating water jetted by a second cleaning nozzle in cleaning an upper portion of a filter according to various embodiments.

Referring to FIGS. 22 and 23, in cleaning an upper portion of the first filter 310, the water pumped by the circulation pump 61 may flow to the second flow path 992. For the cleaning of the upper portion of the first filter 310, the first flow path valve 94 may close the first flow path 991. The second flow path valve 97 may open the second flow path 992. The distribution valve 72 may close the third flow path 712f. For example, as a portion without the communication hole 7231 of the distribution disc 723 is provided in the third flow path 712f, the third flow path 712f may be closed. As the second flow path 992 is open and the first flow path 991 and the third flow path 712f are closed, the water pumped by the circulation pump 61 may flow to the open second flow path 992. The water pumped by the circulation pump 61 may pass the connector 91 and the connection pipe 92 and flow to the second guide pipe 96. The water guided by the second guide pipe 96 may be jetted toward the first filter 310 through the second cleaning nozzle 98. The second cleaning nozzle 98 may jet the water toward the upper portion of the first filter 310.

Although not shown, cleaning of the upper portion of the first filter 310 and cleaning of the lower portion of the first filter 310 may be performed even at the same time. For the cleaning of the upper portion of the first filter 310 and cleaning of the lower portion of the first filter 310, the first flow path valve 94 may open the first flow path 991 and the second flow path valve 97 may open the second flow path 992. The distribution valve 72 may close the third flow path 712f. As the first flow path 991 and the second flow path 992 are open and the third flow path 712f is closed, the water pumped by the circulation pump 61 may flow to the open first flow path 991 and open second flow path 992. The water pumped by the circulation pump 61 may be branched to the first guide pipe 93 and the second guide pipe 96. The water guided by the first guide pipe 93 may be jetted toward the first filter 310 through the first cleaning nozzle 95. The water guided by the second guide pipe 96 may be jetted toward the first filter 310 through the second cleaning nozzle 98. The first cleaning nozzle 95 may jet water toward the lower portion of the first filter 310 and the second cleaning nozzle 98 may jet water toward the upper portion of the first filter 310. The disclosure is not, however, limited thereto. For example, both the first cleaning nozzle 95 and the second cleaning nozzle 98 may jet water toward the lower portion of the first filter 310. For example, both the first cleaning nozzle 95 and the second cleaning nozzle 98 may jet water toward the upper portion of the first filter 310. For example, at least one of the first cleaning nozzle 95 and the second cleaning nozzle 98 may jet water toward an almost middle portion of the first filter 310.

Although an example where the water pumped by the circulation pump 61 is circulated to the water storage chamber 711 was described above, the disclosure is not limited thereto. For example, the water pumped by the drain pump 62 may be provided to the water storage chamber 711 without being drained out. In this case, the first flow path 991 may be provided to guide the water pumped by the drain pump 62 to the water storage chamber 711, and the second flow path 992 may be provided to guide the water pumped by the drain pump 62 to the water storage chamber 711. The connection pipe 92 may be placed adjacent to the drain pump 62 and provided to accommodate the water pumped by the drain pump 62. For example, the connection pipe 92 may be provided to communicate with the drain pump coupler 714 of the sump housing 71. Each of the first cleaning nozzle 95 and the second cleaning nozzle 98 may be provided to jet the water pumped by the drain pump 62 to the water storage chamber 711.

FIG. 24 is a block diagram illustrating an example configuration of a dishwasher according to various embodiments.

Referring to FIG. 24, the dishwasher 1 may include various components. The dishwasher 1 may include a controller 110. The dishwasher 1 may include a user interface (e.g., including various circuitry) 120. The dishwasher 1 may include a communicator (e.g., including communication circuitry) 130. The dishwasher 1 may include a temperature sensor 140. The dishwasher 1 may include a heater 63. The dishwasher 1 may include the circulation pump 61. The dishwasher 1 may include the drain pump 62. The dishwasher 1 may include the first flow path valve 94. The dishwasher 1 may include the second flow path valve 97. The dishwasher 1 may include the distribution valve 72. The dishwasher 1 may include the filter motor 350. The dishwasher 1 may include the first filter 310. The dishwasher may include the water supply valve 715a. In an embodiment, the dishwasher 1 may further include a component not shown in FIG. 24. In an embodiment, the dishwasher 1 may not include some of the components shown in FIG. 24.

The controller 110 may be electrically connected to various components of the dishwasher 1. The controller 110 may control the various components of the dishwasher 1.

The controller 110 may include at least one memory 112 and at least one processor (e.g., including processing circuitry) 111 for performing the aforementioned operation and an operation as will be described in greater detail below.

The at least one memory 112 included in the controller 110 may store an algorithm and/or program data for controlling operations of the components in the dishwasher 1. The at least one processor 111 included in the controller 110 may use the data stored in the at least one memory 112 to perform the aforementioned operation and an operation as will be described in greater detail below. The memory 112 and the processor 111 may be implemented in separate chips. The processor 111 may include one, two or more processor chips or one, two or more processing cores. The memory 112 may include one, two or more memory chips or one, two or more memory blocks. The memory 112 and the processor 111 may be implemented in a single chip. The processor 111 may include various processing circuitry and/or multiple processors. For example, as used herein, including the claims, the term “processor” may include various processing circuitry, including at least one processor, wherein one or more of at least one processor, individually and/or collectively in a distributed manner, may be configured to perform various functions described herein. As used herein, when “a processor”, “at least one processor”, and “one or more processors” are described as being configured to perform numerous functions, these terms cover situations, for example and without limitation, in which one processor performs some of recited functions and another processor(s) performs other of recited functions, and also situations in which a single processor may perform all recited functions. Additionally, the at least one processor may include a combination of processors performing various of the recited/disclosed functions, e.g., in a distributed manner. At least one processor may execute program instructions to achieve or perform various functions.

The controller 110 may process a user input received through the user interface 120, and based on the processing of the user input, control many different components of the dishwasher 1.

The controller 110 may control the various components of the dishwasher 1 to perform a cycle including a washing process, a rinsing process, a drying process, a cooling process, etc., according to the user input input through the user interface 120.

The user interface 120 may interact with the user. The user interface 120 may include various circuitry.

The user interface 120 may obtain a user input. The user interface 120 may display information of the dishwasher 1. For example, the user interface 120 may provide visual and/or auditory feedback.

The user interface 120 may include an input module (e.g., including input circuitry) 121.

The input module 11 may receive an operation command from the user. The input module 121 may provide an electric output signal corresponding to the user input to the controller 110. The input module 121 may include various buttons and/or a dial. The input module 121 may obtain various user inputs such as a user input to turn on or off the dishwasher 1 and a user input to select a washing course, a washing option, etc.

The user interface 120 may include a display 122.

The display 122 may display information regarding a state and/or operation of the dishwasher 1. The display 122 may display information input by the user and/or information to be provided for the user. The display 122 may display information regarding an operation of the dishwasher 1 in at least one of an image or text. The display 122 may receive a signal from the controller 110 and display information corresponding to the received signal. Furthermore, the display 122 may display a graphic user interface (GUI) that enables the dishwasher 1 to be controlled. Hence, the display 122 may display a user interface element (UI element) such as an icon.

The display 122 may include a display panel of various types. For example, the display may include a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, an organic LED (OLED) panel, or a micro LED panel. The display may be implemented with a touch display as well.

The dishwasher 1 may provide various washing courses to wash the dishes. For example, various washing courses such as an automatic course, a standard course, a power course, a fast course and/or a rinsing/drying course may be provided. The number and/or types of processes included in each washing course may be different. Furthermore, each washing course may include various variable washing options (e.g., washing time, temperature, etc.). The user may use the user interface 120 to select a washing course, and change the various washing options of the washing course. The dishwasher 1 may operate according to a washing course and washing options set by user inputs.

The communicator 130 may transmit data to an external device or receive data from the external device based on a control signal of the controller 110. For example, the communicator 130 may communicate with a server, a user terminal and/or other home appliances to transmit or receive various data. The communicator 130 may include various communication circuitry.

The communicator 130 may support establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices (e.g., a server, a user terminal and/or a home appliance), and communication through the established communication channel. In an embodiment, the communicator 130 may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module or a power-line communication module). A corresponding one of the communication modules may communicate with an external electronic device over a first network (e.g., a short-range communication network such as bluetooth, wireless-fidelity (Wi-Fi) direct or infrared data association (IrDA)) or a second network (e.g., a remote communication network such as a legacy cellular network, a fifth generation (5G) network, a next generation communication network, the Internet, or a computer network (e.g., a LAN or wide area network (WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as a plurality of separate components (e.g., a plurality of chips).

The communicator 130 may establish communication with a user terminal through a server.

The communicator 130 may include a Wi-Fi module, and perform communication with an external server and/or a user terminal based on establishment of communication with a home access point (AP).

The temperature sensor 140 may detect temperature of the water accommodated in the water storage chamber 711. The temperature sensor 140 may send data and/or a signal of the detection to the controller 110. The controller 110 may control the heater 63 based on the data and/or signal of the detection received from the temperature sensor 140. The controller 110 may control the heater 63 based on a change in temperature of the water detected by the temperature sensor 140.

The heater 63 may be provided to heat the water. For example, the heater 63 may be provided to heat the water accommodated in the water storage chamber 711. For example, the heater 63 may be equipped in the circulation pump 61. For example, during the operation of the circulation pump 61, the heater 63 may heat the water pumped by the circulation pump 61. For example, the water accommodated in the water storage chamber 711 may be pumped by the circulation pump 61 and heated by the heater 63. The disclosure is not, however, limited to the example, and the heater 63 may be provided as a separate component from the circulation pump 61. The heater 63 may operate separately from the circulation pump 61. The position of the heater 63 is not limited thereto. For example, the heater 63 may heat the water stored in a space (e.g., a water tank) separated from the water storage chamber 711, and the circulation pump 61 may supply the water heated by the heater 63 to the water storage chamber 711.

The circulation pump 61 may be provided to pump the water accommodated in the water storage chamber 711. The water pumped by the circulation pump 61 may be provided to the jet device 40, the first cleaning nozzle 95 or the second cleaning nozzle 98. The controller 110 may control the circulation pump 61. The controller 110 may control operation of the circulation pump 61. The controller 110 may operate or stop the circulation pump 61. The controller 110 may control the circulation pump 61 based on the operation (mode) of the dishwasher 1. The controller 110 may control the circulation pump 61 based on a user input obtained through the user interface 120 and/or an external device. The controller 110 may control on/off, operation time, rotation speed, etc., of the circulation pump 61.

The drain pump 62 may be provided to drain the water and debris in the water storage chamber 711. The water and debris pumped by the drain pump 62 may be discharged out of the dishwasher 1. The controller 110 may control the drain pump 62. The controller 110 may control operation of the drain pump 62. The controller 110 may operate or stop the drain pump 62. The controller 110 may control the drain pump 62 based on the operation (mode) of the dishwasher 1. The controller 110 may control the drain pump 62 based on a user input obtained through the user interface 120 and/or an external device. The controller 110 may control on/off, operation time, rotation speed, etc., of the drain pump 62.

The first flow path valve 94 may open or close the first flow path 991 provided to guide the water pumped by the circulation pump 61 to the water storage chamber 711. The controller 110 may control the first flow path valve 94. The controller 110 may open or close the first flow path valve 94. The controller 110 opening the first flow path valve 94 may include controlling the first flow path valve 94 to open the first flow path 991. The controller 110 closing the first flow path valve 94 may include controlling the first flow path valve 94 to close the first flow path 991. The controller 110 may control the first flow path valve 94 based on the operation (mode) of the dishwasher 1. The controller 110 may control the first flow path valve 94 based on a user input obtained through the user interface 120 and/or an external device.

The second flow path valve 97 may open or close the second flow path 992 provided to guide the water pumped by the circulation pump 61 to the water storage chamber 711. The controller 110 may control the second flow path valve 97. The controller 110 may open or close the second flow path valve 97. The controller 110 opening the second flow path valve 97 may include controlling the second flow path valve 97 to open the second flow path 992. The controller 110 closing the second flow path valve 97 may include controlling the second flow path valve 97 to close the second flow path 992. The controller 110 may control the second flow path valve 97 based on the operation (mode) of the dishwasher 1. The controller 110 may control the second flow path valve 97 based on a user input obtained through the user interface 120 and/or an external device.

The distribution valve 72 may open or close the third flow path 712f provided to guide the water pumped by the circulation pump 61 to the jet device 40. The controller 110 may control the distribution valve 72. The controller 110 may open or close the distribution valve 72. The controller 110 opening the distribution valve 72 may include controlling the distribution valve 72 to open the third flow path 712f. The controller 110 closing the distribution valve 72 may include controlling the distribution valve 72 to close the third flow path 712f. The controller 110 may control the distribution valve 72 based on the operation (mode) of the dishwasher 1. The controller 110 may control the distribution valve 72 based on a user input obtained through the user interface 120 and/or an external device.

The filter motor 350 may be provided to rotate the first filter 310. As the first filter 310 is rotated by the filter motor 350 while being cleaned, the cleaning efficiency of the first filter 310 may increase. The controller 110 may control the filter motor 350. The controller 110 may control operation of the filter motor 350. The controller 110 may operate or stop the filter motor 350. The controller 110 may control the filter motor 350 based on the operation (mode) of the dishwasher 1. The controller 110 may control the filter motor 350 based on a user input obtained through the user interface 120 and/or an external device. The controller 110 may control on/off, operation time, rotation speed, etc., of the filter motor 350.

The water supply valve 715a may be provided in a water supply path (not shown) that connects an external water source to the sump 70. The water supply valve 715a may open or close the water supply path. When the water supply valve 715a opens the water supply path, the water may be supplied to the water storage chamber 711. When the water supply valve 715a closes the water supply path, the water may not be supplied to the water storage chamber 711. The controller 110 may control the water supply valve 715a. The controller 110 may open or close the water supply valve 715a. The controller 110 opening the water supply valve 715a may include controlling the water supply valve 715a to open the water supply path. The controller 110 closing the water supply valve 715a may include controlling the water supply valve 715a to close the water supply path. The controller 110 may control the water supply valve 715a to control water supply to the water supply chamber 711. The controller 110 may control the water supply valve 715a based on the operation (mode) of the dishwasher 1. The controller 110 may control the water supply valve 715a based on a user input obtained through the user interface 120 and/or an external device.

FIG. 25 is a flowchart illustrating an example of a whole process of a dishwasher according to various embodiments.

Referring to FIG. 25, the controller 110 of the dishwasher 1 may identify a selected washing course and washing option, in 1010. The user may use the user interface 120 or an external device to select the washing course and washing option. The controller 110 may fetch an instruction or data corresponding to the user input. In general, the washing course may include a washing process, a rinsing process, a drying process and a cooling process. The washing option may include detailed settings for each of the washing process, rinsing process, drying process and cooling process. The controller 110 may control operation of the dishwasher 1 according to the selected washing course and washing option. For example, the washing process, the rinsing process, the drying process and the cooling process may be sequentially performed.

The dishwasher 1 may perform the washing process, in 1020. The washing process may include a water supply operation 1021, a jet operation (washing) 1022 and a drain operation 1023.

The water supply operation 1021 of the washing process may include supplying water to the water storage chamber 711 of the sump 70 and/or the tub 12. For the water supply operation 1021 of the washing process, the controller 110 may open the water supply valve 715a. For example, the water supplied to the water supply chamber 711 of the sump 70 and/or the tub 12 may be mixed with a detergent.

The jet operation (washing) 1022 of the washing process may include jetting water into the tub 12. The water stored in the sump 70 may be jetted into the tub 12 through the jet device 40. For example, the jet device 40 may receive the water accommodated in the distribution chamber 712 from the distribution cover 73 and/or the duct 20. The water jetted from the jet device 40 may wash an object to be washed (e.g., dishes). For example, the jet device 40 may jet the water mixed with the detergent into the tub 12. For the jet operation (washing) 1022 of the washing process, the controller 110 may operate the circulation pump 61.

The drain operation 1023 of the washing process may include discharging the water that remains in the sump 70 to the outside. For the drain operation 1023 of the washing process, the controller 110 may operate the drain pump 62.

The washing process 1020 may include a preliminary washing process and a main washing process. Each of the preliminary washing process and the main washing process may include a waster supply operation, a jet operation and a drain operation.

The dishwasher 1 may perform a rinsing process, in 1030. The rinsing process may include a water supply operation 1031, a jet operation (rinsing) 1032 and a drain operation 1033.

The water supply operation 1031 of the rinsing process may include supplying water to the water storage chamber 711 of the sump 70 and/or the tub 12. For the water supply operation 1031 of the rinsing process, the controller 110 may open the water supply valve 715a. For example, the water supplied to the water supply chamber 711 of the sump 70 and/or the tub 12 may not be mixed with the The jet operation (rinsing) 1032 of the rinsing process may include jetting water into the tub 12. The water stored in the sump 70 may be jetted into the tub 12 through the jet device 40. For example, the jet device 40 may receive the water accommodated in the distribution chamber 712 from the distribution cover 73 and/or the duct 20. The water jetted from the jet device 40 may rinse the object to be washed (e.g., dishes). For example, the jet device 40 may jet the water not mixed with the detergent into the tub 12. For the jet operation (rinsing) 1032 of the rinsing process, the controller 110 may operate the circulation pump 61. During the jet operation (rinsing) 1032 of the rinsing process, the controller 110 may even operate the heater 63 to rinse the object to be washed (e.g., dishes) with relatively hot water. The object to be washed may be heated by being rinsed with the hot water, and efficiently dried by latent heat after the rinsing process 1030 is completed.

The drain operation 1033 of the rinsing process may include discharging the water that remains in the sump 70 to the outside. For the drain operation 1033 of the rinsing process, the controller 110 may operate the drain pump 62.

The rinsing process 1030 may be performed multiple times.

The dishwasher 1 may perform a drying process, in 1040. In the drying process, hot air may be supplied to the tub 12 or the air in the tub 12 may be circulated. This may evaporate the remaining moisture in the object to be washed.

The dishwasher 1 may perform a cooling process, in 1050. In the cooling process, relatively low-temperature air may be supplied into the tub 12. This may lower the temperature of the object to be washed. In various embodiments, the cooling process 1050 may be a part of the drying process 1040.

FIG. 26 is a flowchart illustrating an example method of controlling a dishwasher according to various embodiments.

Referring to FIG. 26, the water supply operation or jet operation of the dishwasher 1 may be performed in 2010. For example, the water supply operation and the jet operation may be included in the washing course. For example, each of the water supply operation and the jet operation may be selected as washing options. For example, each of the water supply operation and the jet operation may be performed as a separate operation (mode) that is not included in the washing course.

A filter soaking operation (mode) may be performed in 2020. The filter soaking operation may include soaking the first filter 310 in the water accommodated in the water storage chamber 711 for a preset soaking time (also referred to as a specified soaking time). For example, after the completion of the water supply operation or jet operation, the water accommodated in the water storage chamber 11 may not be drained right away. After the completion of the water supply operation or jet operation, the water accommodated in the water storage chamber 711 may wait for the preset soaking time. After the completion of the water supply operation or jet operation, the water accommodated in the water storage chamber 711 may be held for the preset soaking time. The first filter 310 disposed in the water storage chamber 711 may be submerged in the water stored in the water storage chamber 711. This may submerge the debris stuck to the first filter 310 for the preset soaking time, making it separated from the first filter 310 or putting it in a state of being easily separated from the first filter 310.

The drain operation may be performed in 2030. The drain operation may include discharging the water accommodated in the water storage chamber 711 to the outside. The controller 110 may operate the drain pump 62.

FIG. 27 is a flowchart illustrating an example method of controlling a dishwasher according to various embodiments.

Referring to FIG. 27, the water supply operation or jet operation of the dishwasher 1 may be performed in 3010. After completion of the water supply operation or jet operation of the dishwasher 1, based on the lapse of the preset soaking time in 3020, the controller 110 may operate the drain pump 62 in 3030.

For example, the controller 110 may perform the water supply operation or jet operation based on an input to select the filter soaking operation (mode) being obtained from the user through the user interface 120. For example, the controller 110 may perform the water supply operation or jet operation based on an input to select the filter soaking operation (mode) being obtained from an external device (e.g., a server, a user terminal and/or a home appliance). The controller 110 may perform the drain operation based on the lapse of the preset soaking time after completion of the water supply operation or jet operation. In other words, the controller 110 may perform the filter soaking operation (mode) based on the user input being obtained regardless of the process of the dishwasher 1.

For example, the controller 110 may count a non-use time from a point in time at which the dishwasher 1 is last used, and based on the non-use time elapsing a preset reference time (also referred to as a specified reference time), may perform the water supply operation or jet operation. The controller 110 may perform the drain operation based on the lapse of the preset soaking time after completion of the water supply operation or jet operation. The controller 110 may determine whether the dishwasher 1 has not been used for a long time. For example, the controller 110 may determine whether the dishwasher 1 has not been used for a long time based on a signal and/or data received from at least one sensor (e.g., a water level sensor) provided in the dishwasher 1. The controller 110 may perform the filter soaking operation (mode) based on the determining that the dishwasher 1 has not been used for a long time. This may prevent or reduce the debris from being fixed to the first filter 310. The first filter 310 may be prevented/reduced from being clogged by the debris.

For example, the controller 110 may perform the drain operation based on the lapse of the preset soaking time after completion of the water supply operation or jet operation in the last of multiple rinsing processes. The water used in the last rinsing may remain in the water storage chamber 711. With the water used in the last rinsing, the first filter 310 may be soaked for the preset soaking time. The filter soaking operation (mode) may be included in a washing course. For example, the water used in the last rinsing may be the water heated by the heater 63 during the rinsing process.

Until the preset soaking time elapses in 3020, the drain pump 62 may not be operated. The controller 110 may not operate the drain pump 62 until the preset soaking time elapses after completion of the water supply operation or jet operation. The controller 110 may determine that the filter soaking operation has not been sufficiently performed when the preset soaking time does not elapse after the completion of the water supply operation or jet operation.

FIG. 28 is a flowchart illustrating an example method of controlling a dishwasher according to various embodiments.

Referring to FIG. 28, the water supply operation or jet operation of the dishwasher 1 may be performed in 4010.

The filter soaking operation (mode) may be performed in 4020. As the filter soaking operation is performed before the filter cleaning operation, cleaning efficiency of the first filter 310 may increase.

The filter cleaning operation (mode) may be performed in 4030. The filter cleaning operation may include jetting water toward the first filter 310 disposed in the water storage chamber 711. The first cleaning nozzle 95 and/or the second cleaning nozzle 98 may jet water toward the first filter 310. The debris stuck to the first filter 310 may be separated from the first filter 310 by the water jetted from the first cleaning nozzle 95 and/or the second cleaning nozzle 98. For example, the filter cleaning operation may include cleaning of the lower portion of the first filter 310, cleaning of the upper portion of the first filter 310 or cleaning of upper/lower portion of the first filter 310. For example, the filter cleaning operation may include sequentially performing cleaning of the lower portion of the first filter 310 and then cleaning of the upper portion of the first filter 310. For example, the filter cleaning operation may include sequentially performing cleaning of the upper portion of the first filter 310 and then cleaning of the lower portion of the first filter 310. For example, the filter cleaning operation may include simultaneously performing cleaning of the lower portion of the first filter 310 and cleaning of the upper portion of the first filter 310.

The drain operation may be performed in 4040.

FIG. 29 is a flowchart illustrating an example method of controlling a dishwasher according to various embodiments.

Referring to FIG. 29, the water supply operation or jet operation of the dishwasher 1 may be performed in 5010. Based on the lapse of the preset soaking time in 5020, the controller 110 may operate the circulation pump 61 and open at least one flow path valve 94 and/or 97 in 5030. The water pumped by the circulation pump 61 may flow to the first flow path 991 and/or the second flow path 992 as the at least one flow path valve 94 and/or 97 is open. The water flowing in the first flow path 991 may be jetted to the first filter 310 through the first cleaning nozzle 95. The water flowing in the second flow path 992 may be jetted to the first filter 310 through the second cleaning nozzle 98. Accordingly, the water jetted through the first cleaning nozzle 95 and/or the second cleaning nozzle 98 may separate the debris collected on the first filter 310 from the first filter 310. The first filter 310 may thus be cleaned.

Based on the lapse of a preset cleaning time (also referred to as a specified cleaning time) in 5040, the controller 110 may stop operation of the circulation pump 61, close the at least one flow path valve 94 and/or 97, and operate the drain pump 62 in 5050. As the operation of the circulation pump 61 is stopped and the at least one flow path valve 94 and/or 97 is closed, the water in the water storage chamber 711 may not flow to the first flow path 991 and/or the second flow path 992. As the drain pump 62 operates, the water and debris that remains in the water storage chamber 711 may be discharged to the outside.

FIG. 30 is a table illustrating an example of operations of components of a dishwasher according to various embodiments.

Referring to FIG. 30, based on various operations (modes) of the dishwasher 1, the components of the dishwasher 1 may be controlled by the controller 110.

For the water supply operation or jet operation of the dishwasher 1, the controller 110 may open the distribution valve 72 and close the first flow path valve 94 and the second flow path valve 97. The controller 110 may operate the circulation pump 61. The controller 110 may control not to operate the drain pump 62. The controller 110 may control the filter motor 350 not to rotate the first filter 310. The circulation pump 61 may pump the water stored in the water storage chamber 711. The water pumped by the circulation pump 61 may flow to the distribution chamber 712. The water flowing to the distribution chamber 712 may be jetted into the tub 12 by the jet device 40. The water jetted into the tub 12 may flow to the water storage chamber 711. The water stored in the water storage chamber 711 may be circulated.

For the filter soaking operation of the dishwasher 1, the controller 110 may close the distribution valve 72, the first flow path valve 94 and the second flow path valve 72. The controller 110 may stop operating the circulation pump 61. The controller 110 may control not to operate the drain pump 62. The water in the water storage chamber 711 may wait for a preset soaking time to soak the first filter 311. The water in the water storage chamber 711 may be held without being drained for the preset soaking time. The first filter 310 may be submerged in the water accommodated in the water storage chamber 711 for the preset soaking time. The debris stuck to the first filter 310 may also be submerged in the water accommodated in the water storage chamber 711 for the preset soaking time. Accordingly, the debris may be separated from the first filter 310 or put in a state of being easily separated from the first filter 310. To separate the debris stuck to the first filter 310 from the first filter 310 during the filter soaking operation, the controller 110 may control the filter motor 350 to rotate the first filter 310. The disclosure is not, however, limited thereto, and the controller 110 may control the filter motor 350 not to rotate the first filter 310.

When hot water needs to be supplied during the filter soaking operation of the dishwasher 1, the controller 110 may open the at least one flow path valve 94 and/or 97 during a preset heating time (also referred to as a specified heating time). The controller 110 may operate the circulation pump 61 during the preset heating time while in the preset soaking time. The controller 110 may operate the heater 63 during the preset heating time while in the preset soaking time. The circulation pump 61 may pump the water heated by the heater 63. The water pumped by the circulation pump 61 may flow to the first flow path 991 and/or the second flow path 992. The water flowing in the first flow path 991 may be jetted to the first filter 310 through the first cleaning nozzle 95. The water flowing in the second flow path 991 may be jetted to the first filter 310 through the second cleaning nozzle 98. Accordingly, the water (hot water) heated by the heater 63 may be supplied to the water storage chamber 711.

For example, the controller 110 may determine that hot water needs to be supplied based on the lapse of a preset waiting time (also referred to as a specified waiting time) after the start of the filter soaking operation.

For example, the controller 110 may determine that hot water needs to be supplied based on an input to select hot water supply being obtained from the user through the user interface 120 and/and an external device.

For example, the temperature sensor 140 may detect the temperature of the water accommodated in the water storage chamber 711 at regular intervals or in real time and send the temperature to the controller 110, and the controller 110 may determine that hot water needs to be supplied based on the temperature detected from the temperature sensor 140 being lower than a set temperature.

For the filter cleaning operation of the dishwasher 1, the controller 110 may close the distribution valve 72, open the at least one flow path valve 94 and/or 97, and operate the circulation pump 61. The controller 110 may control not to operate the drain pump 62. The controller 110 may operate the filter motor 350 to rotate the first filter 310. The circulation pump 61 may pump the water stored in the water storage chamber 711. The water pumped by the circulation pump 61 may pass the first flow path 991 and/or the second flow path 992 and then be jetted toward the first filter 310 disposed in the water storage chamber 711.

For example, to intensely clean the lower portion of the first filter 310, the controller 110 may open the first flow path valve 94 and close the second flow path valve 97. The water pumped by the circulation pump 61 may flow to the first cleaning nozzle 95 through the first flow path 991. The first cleaning nozzle 95 may jet the water toward the lower portion of the first filter 310.

For example, to intensely clean the upper portion of the first filter 310, the controller 110 may close the first flow path valve 94 and open the second flow path valve 97. The water pumped by the circulation pump 61 may flow to the second cleaning nozzle 98 through the second flow path 992. The second cleaning nozzle 98 may jet the water toward the upper portion of the first filter 310.

For example, although not clearly shown in FIG. 30, to simultaneously clean the upper portion and lower portion of the first filter 310, the controller 110 may open both the first flow path valve 94 and the second flow path valve 97. The water pumped by the circulation pump 61 may be divided into the first flow path 991 and the second flow path 992. The first cleaning nozzle 95 may jet water toward the lower portion of the first filter 310 and the second cleaning nozzle 98 may jet water toward the upper portion of the first filter 310.

For the drain operation of the dishwasher 1, the controller 110 may operate the drain pump 62. The controller 110 may close the distribution valve 72. The controller 110 may close the first flow path valve 94. The controller 110 may close the second flow path valve 97. The controller 110 may stop operating the filter motor 350 not to rotate the first filter 310. The controller 110 may stop operating the circulation pump 61. The drain pump 62 may pump the water accommodated in the water storage chamber 711. The water pumped by the drain pump 62 may be discharged to the outside.

FIG. 30 is merely an example for describing operations of the components of the dishwasher, but the disclosure is not limited to what is shown in FIG. 30.

FIG. 31 is a timing diagram illustrating example operations of components of a dishwasher according to various embodiments.

Referring to FIG. 31, the water supply operation or the jet operation of the dishwasher 1 may be completed at a first point in time t1. Based on the completing of the water supply operation or jet operation, the filter soaking operation of the dishwasher 1 may begin. The controller 110 may maintain the drain pump 62 in the off sate for a preset soaking time a based on completion of the water supply operation or jet operation. The controller 110 may turn off the circulation pump 61 for the preset soaking time a based on the completion of the water supply operation or jet operation. Accordingly, the controller 110 may hold the water stored in the water storage chamber 711 for the preset soaking time a based on completion of the water supply operation or jet operation. The first filter 310 and the debris collected on the first filter 310 may be soaked in the water held in the water storage chamber 711.

The filter cleaning operation of the dishwasher 1 may begin at a second point in time t2. Based on the lapse of the preset soaking time a after the completion of the water supply operation or jet operation (e.g., after t1), the filter cleaning operation of the dishwasher 1 may begin. The controller 110 may maintain the drain pump 62 in the off sate for a preset cleaning time b based on the lapse of the preset soaking time a after completion of the water supply operation or jet operation (e.g., after t1). The controller 110 may turn on the circulation pump 61 for the preset cleaning time b based on the lapse of the preset soaking time a after the completion of the water supply operation or jet operation (e.g., after t1). Although not clearly shown in the drawings, the controller 110 may open the at least one flow path valve 94 and/or 97 for a preset cleaning time b based on the lapse of the preset soaking time a after completion of the water supply operation or jet operation (e.g., after t1). The controller 110 may operate the filter motor 350 to rotate the first filter 310 for the preset cleaning time b based on the lapse of the preset soaking time a after completion of the water supply operation or jet operation (e.g., after t1). Accordingly, the water pumped by the circulation pump 61 may be jetted to the first filter 310 through the at least one cleaning nozzle 95 and/or 98. The first filter 310 may be cleaned by the water jetted from the at least one cleaning nozzle 95 and/or 98 while being rotated by the filter motor 350.

The drain operation of the dishwasher 1 may begin at a third point in time t3. Based on the lapse of the preset cleaning time b after the start of filter cleaning (e.g., after t2), the drain operation of the dishwasher 1 may begin. The controller 110 may turn on the drain pump 62 for a preset drain time (also referred to as a drain time) c based on the lapse of the preset cleaning time b after the start of filter cleaning (e.g., after t2). Based on the lapse of the preset cleaning time b after the start of filter cleaning (e.g., after t2), the controller 110 may turn off the circulation pump 61. Although not clearly shown in the drawings, the controller 110 may close all the flow path valves 94 and 97 based on the lapse of the preset cleaning time b after the start of filter cleaning (e.g., after t2). Accordingly, the water accommodated in the sump 70 may be discharged to the outside.

The drain operation of the dishwasher 1 may be terminated at a fourth point in time t4. Based on the lapse of the preset drain time c after the start of drain operation (e.g., after t3), the drain operation of the dishwasher 1 may be terminated.

FIG. 32 is a timing diagram illustrating example operations of components of a dishwasher according to various embodiments.

Referring to FIG. 32, the water supply operation or the jet operation of the dishwasher 1 may be completed at the first point in time t1. Based on the completion of the water supply operation or jet operation, a filter soaking operation of the dishwasher 1 may be performed for a preset soaking time al. During the filter soaking operation of the dishwasher 1, hot water may be supplied to the sump 70.

An example where hot water is supplied to the sump 70 during the filter soaking operation of the dishwasher 1 will now be described.

Based on the completion of the water supply operation or jet operation, water may be held in the water storage chamber 711 for a preset first waiting time (also referred to as a specified first waiting time) a11. The controller 110 may maintain the circulation pump 61 and the drain pump 62 in the off state for the preset first waiting time a11.

Based on the lapse of the preset first waiting time a11, hot water may be supplied to the water storage chamber 711 for a preset heating time d. For example, the hot water supply may begin at a fifth point in time t5 and be terminated at a sixth point in time t6. In the disclosure, the hot water supply may include circulating and heating the water accommodated in the water storage chamber 711 and supplying the hot water back to the water storage chamber 711. Apart from this, the hot water supply may include adding hot water to the water accommodated in the water storage chamber 711. The controller 110 may turn on the heater 63 for the preset heating time d. The controller 110 may turn on the circulation pump 61 for the preset heating time d. The water heated by the heater 63 may be supplied to the water storage chamber 711 by the circulation pump 61. This may prevent and/or reduce the water in the water storage chamber 711 from being cooled down during the filter soaking operation. Cleaning efficiency of the first filter 310 may increase.

Based on the lapse of the preset heating time d, the water may be held in the water storage chamber 711 for a preset second waiting time (also referred to as a specified second waiting time) a12. The controller 110 may maintain the circulation pump 61 and the drain pump 62 in the off state for the preset second waiting time a12.

Although an example of supplying hot water to the sump 70 based on the lapse of a preset time (e.g., the first waiting time a11) while in the filter soaking operation was described above, the disclosure is not limited thereto. For example, based on the temperature of the water accommodated in the water storage chamber 711 being lowered than the set temperature during the filter soaking operation, hot water may be supplied to the sump 70. For example, the controller 110 may operate the heater 63 and the circulation pump 61 based on the temperature detected by the temperature sensor 140 being lowered than the reference temperature.

The filter cleaning operation of the dishwasher 1 may begin at a seventh point in time t7. Based on the lapse of a preset soaking time al after completion of the water supply operation or jet operation (e.g., after t1), the filter cleaning operation of the dishwasher 1 may begin. The controller 110 may maintain the drain pump 62 in the off sate for a preset cleaning time b1 based on the lapse of the preset soaking time al after the completion of the water supply operation or jet operation (e.g., after t1). The controller 110 may turn on the circulation pump 61 for the preset cleaning time b1 based on the lapse of the preset soaking time al after the completion of the water supply operation or jet operation (e.g., after t1). Although not clearly shown in the drawings, the controller 110 may open the at least one flow path valve 94 and/or 97 for the preset cleaning time b1 based on the lapse of the preset soaking time al after the completion of the water supply operation or jet operation (e.g., after t1). During the filter cleaning operation of the dishwasher 1, the heater 63 may be in the on or off state. The controller 110 may control turning on/off of the heater 63.

The drain operation of the dishwasher 1 may begin at an eighth point in time t8. Based on the lapse of the preset cleaning time b1 after the start of filter cleaning (e.g., after t7), the drain operation of the dishwasher 1 may begin. The controller 110 may turn on the drain pump 62 for a preset drain time cl based on the lapse of the preset cleaning time b1 after the start of filter cleaning (e.g., after t7). Based on the lapse of the preset cleaning time b1 after the start of filter cleaning (e.g., after t7), the controller 110 may turn off the circulation pump 61. Although not clearly shown in the drawings, the controller 110 may close all the flow path valves 94 and 97 based on the lapse of the preset cleaning time b1 after the start of filter cleaning (e.g., after t7). Accordingly, the water accommodated in the sump 70 may be discharged to the outside.

The drain operation of the dishwasher 1 may be terminated at a ninth point in time t9. Based on the lapse of the preset drain time cl after the start of drain operation (e.g., after t8), the drain operation of the dishwasher 1 may be terminated.

FIG. 33 is a timing diagram illustrating example operations of components of a dishwasher according to various embodiments.

Referring to FIG. 33, based on the termination of the filter soaking operation of the dishwasher 1, filter cleaning of the dishwasher 1 may be performed. Based on the termination of the filter cleaning operation of the dishwasher 1, the drain operation of the dishwasher 1 may be performed. The controller 110 may perform the filter cleaning operation before operating the drain pump 62 after the water supply operation or jet operation is completed and the preset soaking time elapses.

During the filter soaking operation of the dishwasher 1, the controller 110 may maintain the first flow path valve 94, the second flow path valve 97 and the circulation pump 61 in the off state. Although not shown in FIG. 33, during the filter soaking operation of the dishwasher 1, the controller 110 may maintain the drain pump 62 in the off state.

During the filter cleaning operation of the dishwasher 1, the controller 110 may turn on the circulation pump 61. The controller 110 may operate the circulation pump 61 for a preset cleaning time b2 based on the lapse of the preset soaking time a or al after the completion of the water supply operation or jet operation.

During the filter cleaning operation of the dishwasher 1, the controller 110 may turn on the filter motor 350. The first filter 310 may be rotated by the filter motor 350 within the water storage chamber 711. The controller 110 may operate the filter motor 350 for the preset cleaning time b2 based on the lapse of the preset soaking time a or al after the completion of the water supply operation or jet operation.

During the filter cleaning operation of the dishwasher 1, the controller 110 may open the at least one flow path valve 94 and/or 97. The controller 110 may open the at least one flow path valve 94 and/or 97 for the preset cleaning time b2 based on the lapse of the preset soaking time a or al after the completion of the water supply operation or jet operation.

For example, the controller 110 may open one of the first flow path valve 94 and the second flow path valve 97 and close the other one of the first flow path valve 94 and the second flow path valve 97 during a preset first cleaning time (also referred to as a specified first cleaning time) b21 after the start of the filter cleaning operation (e.g., after t2 or t7). The controller 110 may close one of the first flow path valve 94 and the second flow path valve 97 and open the other one of the first flow path valve 94 and the second flow path valve 97 during a preset second cleaning time (also referred to as a specified second cleaning time) b22 based on the lapse of the preset first cleaning time b21.

For example, referring to FIG. 33, the controller 110 may open the first flow path valve 94 and close the second flow path valve 97 during the preset first cleaning time b21, and close the first flow path valve and open the second flow path valve 97 during the preset second cleaning time b22. Accordingly, cleaning of the lower portion of the first filter 310 and cleaning of the upper portion of the first filter 310 may be performed sequentially. For example, the controller 110 may switch the flow path at the tenth point in time t10 when the preset first cleaning time b21 elapses after the start of the filter cleaning operation. The controller 110 may close the first flow path valve 94 and open the second flow path valve 97 at the tenth point in time t10. The disclosure is not, however, limited to the example shown in FIG. 33. For example, the controller 110 may close the first flow path valve 94 at the tenth point in time t10, and open the second flow path valve 97 based on the lapse of a preset time (not shown) from the tenth point in time t10. In this case, during the preset time (not shown) from the tenth point in time t10, the filter motor 350 may be in the on or off state.

The disclosure is not, however, limited to what is shown in FIG. 33, and the controller 110 may close the first flow path valve 94 and open the second flow path valve 97 during the preset first cleaning time b21, and open the first flow path valve 94 and close the second flow path valve 97 during the preset second cleaning time b22. Accordingly, cleaning of the upper portion of the first filter 310 and cleaning of the lower portion of the first filter 310 may be performed sequentially. Although not shown in the drawings, the controller 110 may control the first flow path valve 94 and the second flow path valve 97 so that at least a portion of the opening time of the first flow path valve 94 overlaps at least a portion of the opening time of the second flow path valve 97. Accordingly, cleaning of the lower portion of the first filter 310 and cleaning of the upper portion of the first filter 310 may be performed simultaneously.

In FIGS. 31, 32 and 33 (which may be referred to as FIGS. 31 to 33), shown is an example in which the dishwasher 1 performs the filter cleaning operation before the drain operation and after the filter soaking operation. The disclosure is not, however, limited to the example shown in FIGS. 31 to 33. For example, the filter cleaning operation may be omitted in FIGS. 31 to 33. In this case, the dishwasher 1 may perform the drain operation after the filter soaking operation. The controller 110 may operate the drain pump 62 based on the lapse of the preset soaking time a or al after the completion of the water supply operation or jet operation (e.g., after t1). In this case, the controller 110 may operate the drain pump 62, and then control the user interface 120 to provide a filter cleaning notification. Accordingly, the dishwasher 1 may provide the user with a notification for cleaning the filter. The dishwasher 1 may induce the user to clean the filter by providing the user the notification for cleaning the filter in time. For example, the dishwasher 1 may provide the user with a visual and/or auditory notification for cleaning the filter through the user interface 120. This increases ease of use of the dishwasher 1 and makes it easy to maintain the filter.

According to an example embodiment of the disclosure, the dishwasher may include: a tub; a water storage chamber provided under the tub and configured to store water from inside the tub; a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber; a drain pump configured to discharge the water accommodated in the water storage chamber to the outside; and a controller comprising at least one processor, comprising processing circuitry. The controller may be configured to control the drain pump to perform a drain operation of discharging the water accommodated in the water storage chamber to the outside based on the lapse of the specified soaking time after completion of a water supply operation of supplying water into the water storage chamber or a jet operation of jetting water into the tub.

The controller may be configured to cause the dishwasher to perform the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or jet operation in the last of multiple rinsing processes.

The dishwasher may further include a user interface configured to receive a user input. The controller may be configured to cause the dishwasher to perform the water supply operation or jet operation based on an input to select a filter soaking mode being obtained from the user through the user interface. The controller may be configured to cause the dishwasher to perform the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or jet operation.

The controller may be configured to count a non-use time from a point in time at which the dishwasher is last used. The controller may be configured to cause the dishwasher to perform the water supply operation or the jet operation based on the non-use time elapsing a preset reference time. The controller may be configured to cause the dishwasher to perform the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or jet operation.

The dishwasher may further include a heater configured to heat the water accommodated in the water storage chamber. The dishwasher may further include a circulation pump configured to pump the water accommodated in the water storage chamber. The controller may be configured to operate the heater and the circulation pump for a specified heating time during the specified soaking time.

The dishwasher may further include a circulation pump configured to pump the water accommodated in the storage chamber; a flow path configured to guide the water pumped by the circulation pump to the water storage chamber; a valve configured to open or close the flow path; and a cleaning nozzle configured to communicate with the water storage chamber and to jet the water guided through the flow path toward the filter.

The controller may be configured to operate the circulation pump and open the valve such that the water is jetted from the cleaning nozzle toward the filter during the specified cleaning time before operating the drain pump after the lapse of the specified soaking time.

The dishwasher 1 may further include a filter motor configured to rotate the filter. The controller may be configured to operate the filter motor to rotate the filter before operating the drain pump after the lapse of the specified soaking time.

The controller may be configured to stop operating the circulation pump, close the valve and operate the drain pump based on the lapse of the specified cleaning time.

The cleaning nozzle may be configured to jet water to an outer surface of the filter opposite to the inner surface of the filter on which debris is collected.

The flow path may be the first flow path, the valve may be the first valve, and the cleaning nozzle may be the first cleaning nozzle. The dishwasher may further include: a second flow path distinguished from the first flow path and configured to guide the water pumped by the circulation pump to the water storage chamber; a second valve configured to open or close the second flow path; and a second cleaning nozzle configured to communicate with the water storage chamber 711 and to jet the water guided through the second flow path toward the filter.

The first cleaning nozzle may include first slit. The second cleaning nozzle may include a second slit disposed above at least a portion of the first slit.

The controller may be configured to open one of the first valve and the second valve and close the other one of the first valve and the second valve during the specified first cleaning time before operating the drain pump after the lapse of the specified soaking time. The controller may be configured to close one of the first valve and the second valve and open the other one of the first valve and the second valve during the specified second cleaning time based on the lapse of the specified first cleaning time.

The flow path may be a first flow path, and the valve may be a first valve. The dishwasher may further include a jet device configured to jet water toward an object to be washed disposed in the tub; a distribution chamber separated from the water storage chamber and including a second flow path configured to guide water pumped by the circulation pump to the jet device; and a second valve configured to open or close the second flow path. The controller may be configured to open the first valve and close the second valve to perform the water supply operation or the jet operation.

The dishwasher may further include a user interface comprising circuitry configured to display information about the dishwasher. The controller may be configured to operate the drain pump and control the user interface to provide a filter cleaning notification based on the lapse of the specified soaking time.

In an example embodiment of the disclosure, a dishwasher may include: a tub, a water storage chamber configured to store water from inside the tub, a filter provided in the water storage chamber, a water supply valve, a drain pump, and a circulation pump. A method of controlling the dishwasher may include: controlling the water supply valve to perform a water supply operation of supplying water into the water storage chamber or controlling the circulation pump to perform a jet operation of jetting the water stored in the water storage chamber into the tub. The method of controlling the dishwasher may include controlling the drain pump to perform a drain operation of discharging the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of the water supply operation or the jet operation.

The dishwasher may further include a flow path configured to guide the water pumped by the circulation pump to the water storage chamber; a valve configured to open or close the flow path; and a cleaning nozzle configured to communicate with the water storage chamber and configured to jet the water guided through the flow path toward the filter. The method of controlling the dishwasher may further include cleaning the filter by controlling the circulation pump to jet water toward the filter from the cleaning nozzle and opening the flow path for the specified cleaning time after the lapse of the soaking time.

The dishwasher may further include a filter motor configured to rotate the filter. The cleaning of the filter may include operating the filter motor to rotate the filter during the specified cleaning time.

The dishwasher may further include a heater configured to heat the water accommodated in the water storage chamber. The method of controlling the dishwasher may further include operating the heater and the circulation pump for the specified heating time during the specified soaking time.

The method of controlling the dishwasher may further include operating the drain pump to discharge the water accommodated in the water storage chamber to the outside based on the lapse of the specified cleaning time.

The various example embodiments of the disclosure may be implemented in the form of a storage medium for storing instructions to be carried out by a computer. The instructions may be stored in the form of program codes, and when executed by a processor, may generate program modules to perform operation in the various embodiments of the disclosure.

The machine-readable storage medium may be provided in the form of a non-transitory storage medium. The ‘non-transitory storage medium’ may refer, for example, to a tangible device without including a signal, e.g., electromagnetic waves, and may not distinguish between storing data in the storage medium semi-permanently and temporarily. For example, the non-transitory storage medium may include a buffer that temporarily stores data.

The aforementioned methods according to the various embodiments of the disclosure may be provided in a computer program product. The computer program product may be a commercial product that may be traded between a seller and a buyer. The computer program product may be distributed in the form of a storage medium (e.g., a compact disc read only memory (CD-ROM)), through an application store (e.g., Play store™), directly between two user devices (e.g., smart phones), or online (e.g., downloaded or uploaded). In the case of the online distribution, at least part of the computer program product (e.g., a downloadable app) may be at least temporarily stored or arbitrarily created in a storage medium that may be readable to a device such as a server of the manufacturer, a server of the application store, or a relay server.

According to the disclosure, convenience of use of the dishwasher may increase.

According to the disclosure, the dishwasher may easily remove debris stuck to a filter by soaking the filter.

According to the disclosure, the dishwasher may automatically clean the filter. This may increase a lifespan of the filter and replacement cycle.

Several embodiments of the disclosure have been described above, but one skilled in the art will understand and appreciate that various modifications can be made without departing from the scope of the disclosure including the appended claims and their equivalents. It will also be understood that any of the embodiment(s) described herein may be used in conjunction with any other embodiment(s) described herein.