Patent Description:
An air purifier is understood as a device that suctions polluted air, purifies the polluted air, and then discharges the purified air. For example, the air purifier may include a blower for flowing external air in the air purifier and a filter capable of filtering dust, bacteria, or the like in the air.

In general, an air purifier is configured to purify an indoor space such as a home or an office. While the air purifier can purify the surrounding air, there is a problem that it is difficult to purify the air in a space far away from the air purifier. In order to solve this problem, the present applicant has disclosed the following prior document.

According to the prior document, an air purifier in which a first blowing unit and a second blowing unit are disposed in a vertical direction is disclosed. Disclosed is an air purifier capable of discharging air in various directions to the first blowing unit and the second blowing unit disposed in a vertical direction and allowing air to reach a long distance.

However, there is a problem in that the interior of the air purifier is complicated because a plurality of wires are disposed inside the air purifier to supply power to the first blowing unit and the second blowing unit. In addition, since the first blowing unit and the second blowing unit are connected by wiring, it is complicated to separate or couple the first blowing unit and the second blowing unit. In addition, a malfunction of the air purifier is caused by a problem such as a wire disconnection or connecting the wiring incorrectly in the process of separating or combining the first blowing unit and the second blowing unit. <CIT> relates to an air cleaning apparatus with a plurality of air cleaning units which are independently operated.

The present invention can provide an air purifier in which the internal structure of the body is simplified. The present invention may provide an air purifier that facilitates coupling or separation of different blowers. The present invention may provide an air purifier capable of adjusting whether power is supplied according to whether different blowers are coupled. The present invention can provide an air purifier capable of removing wires connecting different blowers.

The air purifier according to the present invention can be configured to simplify the internal structure of the air purifier body by removing wires for connecting different blowers. In addition, it is possible to reduce the manufacturing cost of the air purifier by simplifying the internal structure of the air purifier body.

In the air purifier according to the present invention, power is supplied from one of the two blowers to the other blower according to whether the first blower and the second blower coupled in the vertical direction are coupled to each other, so that the first blower and the second blower may be operated together.

The air purifier according to the present invention can prevent safety accidents that may occur during the power supply process by configuring the blowers to supply power in a wireless power supply method.

According to the present invention, it is possible to easily separate or couple a plurality of blowers disposed in the vertical direction.

According to the present invention, by removing the wiring for connecting a plurality of blowers, it is possible to prevent a problem that may be caused by wiring between a plurality of blowers.

According to the present invention, there is an advantage in that the internal cleaning and maintenance of the air purifier is easy by configuring a plurality of blowers to be easily separated.

According to the present invention, since the air purifier is configured by modularizing a blower that transmits wireless power or receives wireless power, the manufacturing cost of the air purifier can be reduced and the manufacturing efficiency of the air purifier can be increased.

According to the present invention, since the air purifier is configured as a modularized blower, the user can utilize the modularized blower in various ways.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, in description of embodiments of the present invention, when it is determined that detailed descriptions of well-known configurations or functions disturb understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Also, in the description of the embodiments of the present invention, the terms such as first, second, A, B, (a) and (b) may be used.

<FIG> is a perspective view illustrating an outer appearance of an air purifier according to an embodiment of the present invention.

Referring to <FIG>, the air purifier <NUM> according to an embodiment of the present disclosure includes blowers <NUM> and <NUM> for generating an air flow, and a flow change device <NUM> for changing the discharge direction of the air flow generated by the blowers <NUM> and <NUM>.

The blowers <NUM> and <NUM> include a first blower <NUM> for generating a first air flow and a second blower <NUM> for generating a second air flow.

The first blower <NUM> and the second blower <NUM> may be disposed in a vertical direction. For example, the second blower <NUM> may be disposed above the first blower <NUM>. In this case, the first air flow forms a flow for suctioning indoor air existing on the lower side of the air purifier <NUM>, and the second air flow forms for suctioning indoor air existing on the upper side of the air purifier <NUM>.

The air purifier <NUM> includes cases <NUM> and <NUM> that form an outer appearance.

In detail, the cases <NUM> and <NUM> include a first case <NUM> that forms an outer appearance of the first blower <NUM>. The first case <NUM> may have a cylindrical shape. In addition, the upper portion of the first case <NUM> may be configured to have a smaller diameter than the lower portion thereof. In other words, the first case <NUM> may have a conical shape with an end cut off.

The first case <NUM> includes a first separation part 101a to or from which two parts constituting the first case <NUM> are coupled or separated. In addition, the first case <NUM> further includes a hinge part (not illustrated) provided opposite the first separation part 101a. The two parts may rotate about the hinge part.

When at least one of the two parts rotates, the first case <NUM> is opened and can be separated from the air purifier <NUM>. An engaging device may be provided at a portion where the two parts are coupled, that is, on the opposite side of the hinge part. The engaging device may include an engaging protrusion or a magnet member. By opening the first case <NUM>, internal parts of the first blower <NUM> may be replaced or repaired.

A first suctioning part <NUM> through which air is suctioned is formed in the first case <NUM>. The first suctioning part <NUM> includes a through-hole through which at least a portion of the first case <NUM> is penetrated. A plurality of first suctioning parts <NUM> are formed.

The plurality of first suctioning parts <NUM> are uniformly formed along the outer circumferential surface of the first case <NUM> in the circumferential direction so that air can be suctioned in any direction with respect to the first case <NUM>. In other words, air may be suctioned in a <NUM> degree direction based on the vertical center line passing through the inner center of the first case <NUM>.

As described above, since the first case <NUM> has a cylindrical shape and a plurality of the first suctioning parts <NUM> are formed along the outer circumferential surface of the first case <NUM>, the amount of air suctioning can be increased. In addition, by avoiding the hexahedral shape having the corners, there is an effect that the flow resistance to the suctioned air can be reduced.

Air suctioned through the first suctioning part <NUM> may flow in a substantially radial direction from the outer circumferential surface of the first case <NUM>. The direction is defined as follows. Based on <FIG>, the vertical direction is called an axial direction, and the horizontal direction is called a radial direction. The axial direction may correspond to the central axis direction of the first fan <NUM> and the second fan <NUM> to be described below, that is, the motor shaft direction of the fan. In addition, the radial direction may be understood as a direction perpendicular to the axial direction.

In addition, the circumferential direction is understood as an imaginary circle direction formed when rotating with the axial direction as the center and the distance in the radial direction as the rotation radius.

The first blower <NUM> further includes a base <NUM> provided under the first case <NUM> and placed on the ground. The base <NUM> is positioned downwardly spaced apart from the lower end portion of the first case <NUM>. A base suctioning part <NUM> is formed in a separation space between the first case <NUM> and the base <NUM>.

Air suctioned through the base suctioning part <NUM> may flow upward through the suctioning port <NUM> of the suctioning grill <NUM> (refer to <FIG>) provided on the upper side of the base <NUM>.

In other words, the first blower <NUM> includes a plurality of suctioning parts <NUM> and <NUM>. Air existing in the lower part of the indoor space may easily flow into the first blower <NUM> through the plurality of suctioning parts <NUM> and <NUM>. Accordingly, the amount of air suctioning can be increased.

A first discharge part <NUM> is formed at an upper portion of the first blower <NUM>. The first discharge part <NUM> may be formed on the first discharge grill <NUM> of the first discharge guide <NUM> provided in the first blower <NUM>. The first discharge guide <NUM> forms an outer appearance of the upper end portion of the first blower <NUM>. Air discharged through the first discharge part <NUM> may flow upward in the axial direction.

The cases <NUM> and <NUM> may include a second case <NUM> that forms an outer appearance of the second blower <NUM>. The second case <NUM> may have a cylindrical shape. In addition, the upper portion of the second case <NUM> may be configured to have a smaller diameter than the lower portion thereof. In other words, the second case <NUM> may have a conical shape with an end cut off.

The second case <NUM> includes two parts that can be separated or coupled through the second separating part 201a and a hinge part. The second case <NUM> may be configured to be openable like the first case <NUM>. For a detailed description, the description of the first case <NUM> is used. By opening the second case <NUM>, internal parts of the second blower <NUM> may be replaced or repaired.

The diameter of the lower end portion of the second case <NUM> may be smaller than the diameter of the upper end portion of the first case <NUM>. Accordingly, in view of the overall shape of the cases <NUM> and <NUM>, the lower cross-sectional areas of the cases <NUM> and <NUM> are formed to be larger than the upper cross-sectional areas, and thus the air purifier <NUM> can be stably supported on the ground.

A second suctioning part <NUM> through which air is suctioned is formed in the second case <NUM>. The second suctioning part <NUM> includes a through-hole through which at least a portion of the second case <NUM> is penetrated. A plurality of second suctioning parts <NUM> are formed.

The plurality of second suctioning parts <NUM> are uniformly formed along the outer circumferential surface of the second case <NUM> in the circumferential direction so that air can be suctioned in any direction with respect to the second case <NUM>. In other words, air may be suctioned in a <NUM> degree direction based on the vertical center line passing through the inner center of the second case <NUM>.

As described above, since the second case <NUM> is configured in a cylindrical shape and a plurality of the second suctioning parts <NUM> are formed along the outer circumferential surface of the second case <NUM>, an amount of air suctioning may be increased. In addition, by avoiding the hexahedral shape having the corners, there is an effect that the flow resistance to the suctioned air can be reduced.

Air suctioned through the second suctioning part <NUM> may flow from the outer circumferential surface of the second case <NUM> in a substantially radial direction.

The air purifier <NUM> includes a partitioning part <NUM> provided between the first blower <NUM> and the second blower <NUM>. By the partitioning part <NUM>, the second blower <NUM> may be positioned to be spaced apart from the upper side of the first blower <NUM>. In this embodiment, the partitioning part <NUM> may be mounted on the lower portion of the second blower <NUM>. The second blower <NUM> and the partitioning part <NUM> may be separated from the first blower <NUM>.

The flow change device <NUM> may be installed above the second blower <NUM>. Based on the air flow, the air flow path of the second blower <NUM> may communicate with the air flow path of the flow change device <NUM>. The air that has passed through the second blower <NUM> may pass through the air flow path of the flow change device <NUM> and be discharged to the outside through the second discharge part <NUM>. The second discharge part <NUM> is formed at the upper end portion of the flow change device <NUM>.

The flow change device <NUM> may be movably provided. For example, the flow change device <NUM> may be in a lying state (first position) or in an inclined erect state (second position).

A display device (not illustrated) for displaying operation information of the air purifier <NUM> may be provided at an upper portion of the flow change device <NUM>. The display device may move together with the flow change device <NUM>.

<FIG> is a perspective view illustrating an internal configuration of an air purifier according to an embodiment of the present invention, <FIG> is a cross-sectional view taken along III-III' of <FIG>, <FIG> is an exploded perspective view illustrating the configuration of a first blower according to an embodiment of the present invention, <FIG> is an exploded perspective view illustrating the configuration of a first fan and a first guide device according to an embodiment of the present invention, <FIG> is a cross-sectional view illustrating a partial configuration of a first blower according to an embodiment of the present invention, and <FIG> is an exploded perspective view illustrating a partial configuration of a partitioning part and a first blower according to an embodiment of the present invention.

Referring to <FIG>, the first blower <NUM> according to an embodiment of the present invention includes a base <NUM> and a suctioning grill <NUM> disposed above the base <NUM>.

The base <NUM> includes a base main body <NUM> placed on the ground and a base protrusion <NUM> protruding upward from the base main body <NUM> and on which the suctioning grill <NUM> is placed.

By the base protrusion <NUM>, the base main body <NUM> and the suctioning grill <NUM> are spaced apart from each other. Between the base <NUM> and the suctioning grill <NUM>, a base suctioning part <NUM> for forming an air suctioning space is provided.

The base <NUM> may further include an electric space <NUM> in which a first PCB part <NUM> to be described below can be installed therein. The first PCB part <NUM> may be disposed in any one of an installation space part or the electric space <NUM> to be described below. In this embodiment, it will be described that the first PCB part <NUM> is disposed in the installation space part. However, when the first PCB part <NUM> is disposed in the electric space <NUM>, there is an effect that the space utilization of the air purifier is improved.

The suctioning grill <NUM> includes a substantially ring-shaped grill main body <NUM> and a suctioning port <NUM> formed at an edge of the grill main body <NUM>. A plurality of suctioning ports <NUM> may be provided in a state of being spaced apart along the edge. In addition, the plurality of suctioning ports <NUM> may communicate with the base suctioning part <NUM>.

Air suctioned through the suctioning port <NUM> and the base suctioning part <NUM> may pass through the first filter member <NUM>. In other words, air may pass through the outer circumferential surface of the cylindrical first filter member <NUM> and flow into the first filter member <NUM>. In other words, the first filter member <NUM> may have a cylindrical shape and have a filter surface for filtering air.

In the suctioning grill <NUM>, a lever supporting part <NUM> that forms an upper surface of the grill main body <NUM> and supports the first lever device <NUM>, and a groove part <NUM> formed to be recessed in the inner radial direction from an outer circumferential surface of the grill main body <NUM> are further provided. The groove part <NUM> may provide a space in which the first handle <NUM>, which will be described below, can move.

The first blower <NUM> includes a first lever device <NUM> provided above the suctioning grill <NUM> and operable by a user.

The first lever device <NUM> includes a lever main body <NUM> that has a substantially ring shape and is rotatably provided.

The lever main body <NUM> includes a lever protrusion <NUM> provided on the edge of the lever main body <NUM>. The lever protrusion <NUM> may protrude upward from the upper surface of the edge of the lever main body <NUM> and a plurality of lever protrusion may be provided in a state of being spaced apart from each other. The plurality of lever protrusions <NUM> is understood as a configuration having an inclined surface in order to move the first support device <NUM> to be described below upward or downward.

A first handle <NUM> is provided on the outer circumferential surface of the lever main body <NUM>. The user may rotate the lever main body <NUM> clockwise or counterclockwise by griping the first handle <NUM>.

A first support device <NUM> for supporting the first filter member <NUM> is provided above the first lever device <NUM>. The first lever device <NUM> supports the lower surface of the first support device <NUM>. A support protrusion (not illustrated) in contact with the lever protrusion <NUM> may be provided in the first support device <NUM>. The support protrusion may protrude downward from the lower surface of the first support device <NUM>, and a plurality of support protrusions may be provided in the number corresponding to the lever protrusion <NUM>. In addition, the support protrusion includes an inclined surface.

While the lever main body <NUM> rotates, the lever protrusion <NUM> may be rotated together with the lever main body <NUM>. At this time, when the upper portion of the lever protrusion <NUM> comes into contact with the lower portion of the support protrusion, the lever main body <NUM> pushes the first supporting device <NUM> upward. When the first supporting device <NUM> moves upward, the first filter member <NUM> is in a state of being coupled to the first blower <NUM>.

On the other hand, when the lower portion of the lever protrusion <NUM> comes into contact with the upper portion of the support protrusion, the first supporting device <NUM> descends downward. In addition, when the first support device <NUM> descends downward, the first filter member <NUM> is in a separable state (released state) from the first blower <NUM>.

The first blower <NUM> further includes a first filter frame <NUM> forming a mounting space for the first filter member <NUM>. In detail, the first filter frame <NUM> includes a first frame <NUM> forming a lower portion of the first filter frame <NUM> and a second frame <NUM> forming an upper portion of the first filter frame <NUM>.

The first frame <NUM> has a ring shape in which approximately a portion thereof is cut off. The ring-shaped inner space of the first frame <NUM> forms at least a portion of an air flow path passing through the first filter frame <NUM>.

The first lever device <NUM> and the first support device <NUM> may be positioned on the inner circumferential side of the first frame <NUM>. The upper surface of the first supporting device <NUM> includes a seating surface on which the first filter member <NUM> is placed. In addition, a first handle space part 131a allowing the first handle <NUM> of the first lever device <NUM> to be manipulated is defined in the cut-out partial space of the first frame <NUM>. The first handle <NUM> is positioned in the first handle space part 131a and may be manipulated in a clockwise or counterclockwise direction.

The second frame <NUM> is positioned upwardly spaced apart from the first frame <NUM>. The second frame <NUM> has a substantially ring shape. The ring-shaped inner space of the second frame <NUM> forms at least a portion of an air flow path passing through the first filter frame <NUM>. In addition, an upper portion of the second frame <NUM> may support a first fan housing <NUM> to be described below.

The first filter frame <NUM> further includes a first filter support part <NUM> extending upwardly from the first frame <NUM> toward the second frame <NUM>. The first and second frames <NUM> and <NUM> may be spaced apart from each other by the first filter support part <NUM>. A plurality of first filter support parts <NUM> may be provided, and the plurality of first filter support parts <NUM> may be arranged in a circumferential direction to be connected to edges of the first and second frames <NUM> and <NUM>.

A mounting space of the first filter member <NUM> is defined by the first and second frames <NUM> and <NUM> and the plurality of first filter support parts <NUM>.

In the mounting space, the first filter member <NUM> may be detachably mounted. The first filter member <NUM> has a cylindrical shape, and air may flow through the outer circumferential surface of the first filter member <NUM> thereinto. In the process of passing through the first filter member <NUM>, impurities such as fine dust in the air may be filtered out.

The first filter member <NUM> may be formed in a cylindrical shape. The first filter member <NUM> includes one or more filter parts <NUM>. The filter part <NUM> may form an inflow surface in which air flows. The upper end and lower end of the filter part <NUM> may be fixed by a filter frame. The filter frame disposed at the lower end of the filter part <NUM> may be referred to as a first filter frame. The filter frame disposed on the upper end of the filter part <NUM> may be referred to as a second filter frame. At least one of the first and second filter frames further includes a handle 121a. The first filter member <NUM> includes an outlet <NUM> through which the air passing through the filter part <NUM> is discharged. The outlet <NUM> is disposed in the axial direction of the first filter member <NUM>. In other words, the air flowing in the radial direction through the filter part <NUM> may flow in the axial direction through the outlet <NUM>.

Since the first filter member <NUM> has a cylindrical shape, air can flow in any direction with respect to the first filter member <NUM>. Accordingly, the filtering area of the air can be increased.

The mounting space may be provided in a cylindrical shape corresponding to the shape of the first filter member <NUM>. The first filter member <NUM> may be slidably retracted toward the mounting space during the mounting process. Conversely, the first filter member <NUM> may be slidably drawn out from the mounting space during the separation process.

In other words, when the first handle <NUM> is manipulated while the first filter member <NUM> is placed on the upper surface of the first support device <NUM>, the first filter member <NUM> is in the released position while moving downward. In addition, the first filter member <NUM> may be separated from the mounting space by sliding outward in the radial direction.

On the other hand, in a state where the first filter member <NUM> is separated from the mounting space, the first filter member is slid radially inward toward the mounting space to be supported on the upper surface of the first support device <NUM>, and the first filter member can be in close contact upward by the manipulation of the first handle <NUM>. At this time, the first filter member <NUM> is in the coupled position.

Meanwhile, the first support part cover <NUM> may be coupled to the outside of the first filter support part <NUM>.

The first blower <NUM> further includes a first fan housing <NUM> installed at the outlet side of the first filter member <NUM>. A first fan <NUM> is received in the first fan housing <NUM>. In addition, the first fan housing <NUM> may be supported by the first filter frame <NUM>.

A first fan inlet <NUM> for guiding the inflow of air into the first fan housing <NUM> is provided at a lower portion of the first fan housing <NUM>. A grill is provided in the first fan inlet <NUM> to prevent a user from inserting a finger or the like into the inside of the first fan housing <NUM> when the first filter member <NUM> is separated.

The first fan <NUM> is placed above the first fan inlet <NUM>. For example, the first fan <NUM> includes a centrifugal fan that flows air in an axial direction and discharges air upward in a radial direction.

In detail, the first fan <NUM> includes a hub <NUM> to which a rotation shaft 165a of a first fan motor <NUM>, which is a centrifugal fan motor, is coupled, a shroud <NUM> disposed in a state of being spaced apart from the hub <NUM>, and a plurality of blades <NUM> disposed between the hub <NUM> and the shroud <NUM>. The first fan motor <NUM> may be coupled to the upper side of the first fan <NUM>.

The hub <NUM> may have a bowl shape in which the diameter thereof becomes narrower toward the lower side. In addition, the hub <NUM> includes a shaft coupling part to which the rotation shaft 165a is coupled, and a first blade coupling part extending obliquely upward from the shaft coupling part.

The shroud <NUM> includes a lower end portion in which a shroud suctioning port 162a through which air passing through the first fan inlet <NUM> is suctioned is formed, and a second blade coupling part extending upward from the lower end part.

One surface of the blade <NUM> may be coupled to the first blade coupling part of the hub <NUM>, and the other surface thereof may be coupled to the second blade coupling part of the shroud <NUM>. In addition, the plurality of blades <NUM> may be disposed to be spaced apart from each other in a circumferential direction of the hub <NUM>.

The blade <NUM> includes a leading edge 163a forming a side end portion in which air flows and a trailing edge 163b forming a side end portion at which air is discharged.

The air passing through the first filter member <NUM> flows upward and flows into the first fan housing <NUM> through the first fan inlet <NUM>. In addition, the air flows in the axial direction of the first fan <NUM>, flows into the first leading edge 163a, and flows out to the trailing edge 163b through the blade <NUM>.

At this time, so that the air flowing out through the trailing edge 163b can flow upward in the radial direction, the trailing edge 163b may extend obliquely upward and outward with respect to the axial direction corresponding to the flow direction of the air.

The first blower <NUM> further includes a first air guide <NUM> coupled to the upper side of the first fan <NUM> to guide the flow of air passing through the first fan <NUM>.

The first air guide <NUM> includes an outer wall <NUM> having a cylindrical shape and an inner wall <NUM> positioned inside the outer wall <NUM> and having a cylindrical shape. The outer wall <NUM> is disposed to surround the inner wall <NUM>. A first air flow path 172a through which air flows is formed between the inner circumferential surface of the outer wall <NUM> and the outer circumferential surface of the inner wall <NUM>.

The first air guide <NUM> includes a guide rib <NUM> disposed in the first air flow path 172a. The guide rib <NUM> extends from the outer circumferential surface of the inner wall <NUM> to the inner circumferential surface of the outer wall <NUM>. A plurality of the guide ribs <NUM> may be disposed to be spaced apart from each other. The plurality of guide ribs <NUM> perform a function of upwardly guiding the air flowing into the first air flow path 172a of the first air guide <NUM> through the first fan <NUM>.

The guide rib <NUM> may extend obliquely upward from the lower portions of the outer wall <NUM> and the inner wall <NUM>. For example, the guide rib <NUM> is formed to be round and guides the air to flow in an inclined upward direction.

The first air guide <NUM> further includes a motor receiving part <NUM> extending downward from the inner wall <NUM> to receive the first fan motor <NUM>. The motor receiving part <NUM> may have the shape of a bowl whose diameter decreases toward the bottom. A motor coupling part <NUM> is provided on one side of the first fan motor <NUM>, and the motor coupling part <NUM> guides to fix the first fan motor <NUM> to the first air guide <NUM>.

The motor receiving part <NUM> may include a fastening rib <NUM>. The motor coupling part <NUM> may be fastened to the fastening rib <NUM> by a fastening member. The fastening rib <NUM> may be provided to protrude upward from the upper surface of the motor receiving part <NUM>. A plurality of fastening ribs <NUM> may be provided.

The shape of the motor receiving part <NUM> may correspond to the shape of the hub <NUM>. In addition, the motor receiving part <NUM> may be inserted inside the hub <NUM>.

The first fan motor <NUM> may be supported on the upper side of the motor receiving part <NUM>. In addition, the rotating shaft 165a of the first fan motor <NUM> extends downward from the first fan motor <NUM> and penetrates the bottom of the motor receiving part <NUM> to couple to the shaft coupling part 161a of the hub <NUM>.

The first blower <NUM> further includes a second air guide <NUM> coupled to the upper side of the first air guide <NUM> and guiding the air passing through the first air guide <NUM> to the first discharge guide <NUM>. The first air guide <NUM> and the second air guide <NUM> may be integrally formed.

The second air guide <NUM> includes a first guide wall <NUM> having a substantially cylindrical shape, and a second guide wall <NUM> positioned inside the first guide wall <NUM> and having a substantially cylindrical shape. The first guide wall <NUM> may be disposed to surround the second guide wall <NUM>.

A second air flow path <NUM> through which air flows is formed between the inner circumferential surface of the first guide wall <NUM> and the outer circumferential surface of the second guide wall <NUM>. The air flowing through the first air flow path 172a of the first air guide <NUM> passes through the second air flow path <NUM> and flows upward.

A fastening guide <NUM> coupled to the first air guide <NUM> is provided under the second guide wall <NUM>. The fastening guide <NUM> may extend below the second guide wall <NUM>.

A predetermined fastening member is coupled to the fastening guide <NUM>, and the fastening member may be coupled to the fastening rib <NUM> of the first air guide <NUM>. The fastening rib <NUM> may be provided to protrude upwardly from the upper surface of the motor receiving part <NUM>. In addition, a plurality of fastening guides <NUM> and a plurality of fastening rib <NUM> may be provided.

The second air guide <NUM> further includes a leg support part <NUM> extending from an inner circumferential surface of the first guide wall <NUM> to an outer circumferential surface of the second guide wall <NUM> to support a leg <NUM> to be described below. The leg support part <NUM> includes an upper surface to support the lower surface of the leg <NUM>. In addition, a plurality of the leg support parts <NUM> may be provided.

A first space part <NUM> in which at least a portion of the first PCB part <NUM> is received is formed inside the second guide wall <NUM> having a cylindrical shape. For example, a portion of the first PCB <NUM>, the first support plate <NUM>, and the power transmitter <NUM> of the first PCB part <NUM> may be positioned in the first space part <NUM>.

The first blower <NUM> may further include a first discharge guide <NUM> which is disposed on the upper side of the second air guide <NUM>, that is, at the outlet side of the air flow based on the air flow path and guides the air discharge to the outside of the air purifier <NUM>.

The first discharge guide <NUM> includes a first discharge main body <NUM> forming a second space part <NUM> in a substantially central portion. For example, the first discharge main body <NUM> may have an annular shape.

At least a portion of the first PCB part <NUM> may be received in the second space part <NUM>. For example, the remaining portions of the first PCB <NUM>, the first support plate <NUM>, and the power transmitter <NUM> of the first PCB part <NUM> may be positioned in the second space part <NUM>. The second space part <NUM> is formed above the first space part <NUM>, and together with the first space part <NUM>, forms an installation space part in which the first PCB part <NUM> is installed. In addition, the installation space part may be formed so that the first space part <NUM>, the second space part <NUM>, and the motor receiving part <NUM> communicate with each other. At least one of the first space part <NUM>, the second space part <NUM>, and the motor receiving part <NUM> may be referred to as a lower space part forming a portion of the installation space part.

Meanwhile, the second space part <NUM> may be exposed to the external space when the partitioning part <NUM> to be described below is separated from the first blower <NUM>. The second space part <NUM> exposed to the external space may be shielded by a second space part cover (not illustrated). The second space part cover may be understood as a separate configuration for covering the second space part <NUM>. The second space part cover may prevent foreign substances from flowing into the first PCB part <NUM> to be described below by shielding the opened second space part <NUM>. In addition, the second space part cover further includes a display part. The display part provided on the second space part cover may display the operating state of the first blower <NUM>. In addition, the second space part cover can be used as a charging support part on which a terminal that can be charged by wireless power transmitted from a power transmitter <NUM>, which will be described below, is seated. The terminal seated on the second space part cover or the like may be charged by wireless power transmitted from the power transmitter <NUM>.

The first blower <NUM> includes a first PCB part <NUM>. The first PCB part <NUM> includes a first PCB <NUM>. The first PCB <NUM> may control components included in the first blower <NUM>. The first PCB <NUM> may be referred to as a first control part <NUM>.

The first PCB part <NUM> may include a first support plate <NUM> and a first support <NUM>. The first support plate <NUM> may be formed in a plate shape. The first PCB <NUM> may be fixed to the first support plate <NUM>. The first PCB <NUM> may be positioned on the upper surface of the first support plate <NUM>. In this embodiment, the first support plate <NUM> may be disposed above the first fan motor <NUM>. In the first support <NUM>, a bottom surface of the first support plate <NUM> may extend toward the motor receiving part <NUM> of the first fan housing <NUM>. The first support <NUM> may be fastened to and fixed to the motor receiving part <NUM>. The first support plate <NUM> may be positioned in the installation space part. The first support <NUM> may be positioned at least in the motor receiving part <NUM>.

The first PCB part <NUM> includes a power transmitter <NUM>. The power transmitter <NUM> may transmit wireless power. The power transmitter <NUM> may transmit wireless power to the second blower <NUM>. The second blower <NUM> may be operated by wireless power transmitted from the power transmitter <NUM>. The operation of the power transmitter <NUM> may be controlled by the first PCB <NUM>. The power transmitter <NUM> may be fixed to the upper surface of the first support plate <NUM>.

The first discharge main body <NUM> includes a first discharge grill <NUM>. A plurality of the first discharge grills <NUM> are provided, and a first discharge part <NUM> through which air can be discharged to the outside is formed between the plurality of first discharge grills <NUM>. The plurality of first discharge grills <NUM> are disposed above the second air flow path <NUM>, and the air passing through the second air flow path <NUM> flows toward the first discharge grill <NUM> and may be discharged through the first discharge part <NUM>.

The first discharge main body <NUM> includes a leg insertion part <NUM> into which the leg <NUM> is inserted. The leg insertion part <NUM> may be formed between the first discharge grill <NUM> of any one of the plurality of first discharge grills <NUM> and the other first discharge grill <NUM>. A plurality of the leg insertion parts <NUM> may be provided corresponding to the number of the legs <NUM>. The leg <NUM> is inserted into the leg insertion part <NUM> to extend downward and may be seated on the leg support part <NUM>.

A partitioning part <NUM> is installed above the first discharge guide <NUM>. The partitioning part <NUM> may be disposed between the first blower <NUM> and the second blower <NUM>. The second blower <NUM> may be spaced upwardly from the first blower <NUM> by the partitioning part <NUM>. The air discharged from the first blower <NUM> may be discharged in a direction toward the external space by the partitioning part <NUM>. Also, the first blower <NUM> and the second blower <NUM> may be partitioned by the partitioning part <NUM>.

<FIG> and <FIG> are exploded perspective views illustrating the configuration of a second blower according to an embodiment of the present invention, and <FIG> is a cross-sectional view illustrating the configuration of a second blower according to an embodiment of the present invention.

Referring to <FIG> and <FIG> together, the second blower <NUM> according to an embodiment of the present invention includes a second support device <NUM>, a second lever device <NUM>, a second filter member <NUM>, a second filter frame <NUM>, a second fan housing <NUM>, and a second fan <NUM>. These configurations are similar to the parts provided in the first blower <NUM>. Hereinafter, these configurations it will be briefly described, and it is noted in advance that the description of the first blower <NUM> can be used for the same part.

The second support device <NUM> is provided to be movable upward or downward by manipulation of a handle provided on the second lever device <NUM> and supports the second filter member <NUM>. When the second support device <NUM> moves upward, the second filter member <NUM> is in a state of being coupled to the second blower <NUM>. On the other hand, when the second support device <NUM> moves downward, the second filter member <NUM> is in a detachable state, that is, in a released state from the second blower <NUM>.

As described in the first lever device <NUM> and the first support device <NUM> of the first blower <NUM>, the second lever device <NUM> includes a lever protrusion and the second support device <NUM> includes a support protrusion. As the lever protrusion and the support protrusion interact with each other, the second support device <NUM> may be moved upwardly or downwardly. For a detailed description, the description of the first blower <NUM> is used.

The second filter member <NUM> is provided in a cylindrical shape. The air suctioned through the second suctioning part <NUM> of the second case <NUM> may pass through the outer circumferential surface of the second filter member <NUM> to flow inside the second filter member <NUM>. In other words, the second filter member <NUM> may have a cylindrical shape filter surface for filtering air.

The second filter frame <NUM> includes a first frame <NUM> forming a lower portion of the second filter frame <NUM> and forming a second handle space part 231a, a second frame <NUM> forming an upper portion of the second filter frame <NUM>, a second filter support part <NUM> extending upward from the first frame <NUM> toward the second frame <NUM>, and a second support part cover <NUM> covering the second filter support part <NUM>. The description of the second filter member <NUM> and the second filter frame <NUM> uses the description of the first filter member <NUM> and the first filter frame <NUM> of the first blower <NUM>.

The second blower <NUM> further includes a sensor device <NUM>. The sensor device <NUM> may include a dust sensor 273a for detecting an amount of dust in the air and a gas sensor 273b for detecting an amount of gas in the air. In addition, the sensor device <NUM> further includes a sensor cover <NUM> capable of covering at least one side of the sensors 273a and 273b. For example, the sensors 273a and 273b may be disposed to be supported by the second frame <NUM> of the second filter frame <NUM>. Meanwhile, the sensor device <NUM> may be provided in the first blower <NUM>. The sensor device provided to the first blower <NUM> may be referred to as a first sensor device. The sensor device provided to the second blower <NUM> may be referred to as a second sensor device. The first sensor device may be disposed to be supported by the second frame <NUM> of the first filter frame <NUM>.

The second fan housing <NUM> includes a second fan receiving part <NUM> in which the second fan <NUM> is received. The second fan housing <NUM> includes a second fan inlet <NUM> provided under the second fan housing <NUM> and guiding the inflow of air into the second fan housing <NUM>.

The second fan <NUM> includes a hub <NUM> to which a rotation shaft 265a of a second fan motor <NUM>, which is a centrifugal fan motor, is coupled, a shroud <NUM> spaced apart from the hub <NUM>, and a plurality of blades <NUM> disposed between the hub <NUM> and the shroud <NUM>. The description of the second fan housing <NUM> and the second fan <NUM> uses the description of the first fan housing <NUM> and the first fan <NUM> of the first blower <NUM>.

The second blower <NUM> further includes an ionizer <NUM> for removing or sterilizing odor particles in the air. The ionizer <NUM> is coupled to the second fan housing <NUM> and may act on air flowing inside the second fan housing <NUM>. The ionizer <NUM> may be provided in the first blower <NUM>. The ionizer provided to the second blower <NUM> may be referred to as a second ionizer. The ionizer provided to the first blower <NUM> may be referred to as a first ionizer. The first ionizer may be coupled to the first fan housing <NUM> and act on air flowing through the inner portion of the first fan housing <NUM>.

The second blower <NUM> further includes a third air guide device <NUM> coupled to the upper side of the second fan <NUM> to guide the flow of air passing through the second fan <NUM>.

The third air guide device <NUM> includes an outer wall <NUM> having a cylindrical shape and an inner wall <NUM> positioned inside the outer wall <NUM> and having a cylindrical shape. A first air flow path 272a through which air flows is formed between the inner circumferential surface of the outer wall <NUM> and the outer circumferential surface of the inner wall <NUM>.

In addition, the third air guide device <NUM> includes a guide rib <NUM> disposed in the first air flow path 272a. The guide rib <NUM> extends from an outer circumferential surface of the inner wall <NUM> to an inner circumferential surface of the outer wall <NUM>.

The third air guide device <NUM> further includes a motor receiving part <NUM> extending downward from the inner wall <NUM> to receive the second fan motor <NUM>. The motor receiving part <NUM> may have the shape of a bowl whose diameter decreases toward the bottom.

The second fan motor <NUM> is coupled to the upper side of the second fan <NUM> to provide a driving force to the second fan <NUM>. In addition, a motor coupling part <NUM> is provided on one side of the second fan motor <NUM>, and the motor coupling part <NUM> guides the second fan motor <NUM> to be fixed to the third air guide device <NUM>.

Among the configurations of the third air guide device <NUM>, the description of the outer wall <NUM>, the inner wall <NUM>, the guide rib <NUM>, and the motor receiving part <NUM> uses the description of the corresponding configuration of the first air guide <NUM>. In addition, the description of the second fan motor <NUM> and the motor coupling part <NUM> uses the description of the first fan motor <NUM> and the motor coupling part <NUM>.

Meanwhile, the third air guide device <NUM> may further include a guide device (not illustrated) for guiding the movement of the flow adjusting device <NUM>.

The second blower <NUM> includes a second discharge guide device <NUM> which is installed above the third air guide device <NUM> and guides the flow of air passing through the third air guide device <NUM>.

The second discharge guide device <NUM> may have a substantially annular shape with an empty interior. In detail, the second discharge guide device <NUM> includes the discharge outer wall <NUM> which forms the outer circumferential surface of the second discharge guide device <NUM> and has a cylindrical shape and a discharge inner wall <NUM> which is positioned inside the discharge outer wall <NUM>, forms an inner circumferential surface of the second discharge guide device <NUM>, and has a cylindrical shape.

The discharge outer wall <NUM> is disposed to surround the discharge inner wall <NUM>. Between the inner circumferential surface of the discharge outer wall <NUM> and the outer circumferential surface of the discharge inner wall <NUM>, a discharge flow path through which the air that has passed through the third air guide device <NUM> flows is formed. The discharge flow path may be positioned above the air flow path provided with the guide rib <NUM>.

The second discharge guide device <NUM> further includes a second discharge grill <NUM> disposed in the discharge flow path. The second discharge grill <NUM> extends from an outer circumferential surface of the discharge inner wall <NUM> to an inner circumferential surface of the discharge outer wall <NUM>.

A partitioning part <NUM> may be fixed to a lower side of the second blower <NUM>. The partitioning part <NUM> may be coupled to the first blower <NUM>. In a state where the partitioning part <NUM> is fixed to the second blower <NUM>, it may be separated from or coupled to the first blower <NUM>. In other words, the partitioning part <NUM> may define a bottom surface of the second blower <NUM> when the second blower <NUM> is separated from the first blower <NUM>. The partitioning part <NUM> may further include a base for placing the second blower <NUM> on a bottom surface.

The user can use only the first blower <NUM> by separating the second blower <NUM> and the partitioning part <NUM> from the first blower <NUM>. The air purifier <NUM> according to the present invention may be operated by using a single-stage air purifier using only the first blower <NUM> and a two-stage air purifier obtained by combining the second blower <NUM> and the partitioning part <NUM>.

The partitioning part <NUM> includes legs <NUM> for separating the first and second blowers <NUM> and <NUM> from each other. A separation space between the first and second blowers <NUM> and <NUM> may be defined by the legs <NUM>. A plurality of the legs <NUM> may be provided while being spaced apart in the circumferential direction. In addition, the leg <NUM> may extend from the lower part of the separation space toward the upper part thereof, that is, in the axial direction.

Through the separation space, the air discharged from the first blower <NUM>, that is, the air discharged from the first discharge part <NUM> of the first discharge guide <NUM> may flow easily.

The partitioning part <NUM> further includes a blocking wall <NUM> installed between the plurality of legs <NUM> and extending in a radial direction, that is, a horizontal direction. By the blocking wall <NUM>, the separation space may be divided into an upper space and a lower space.

The air discharged from the first discharge part <NUM> may be discharged to the outside of the air purifier <NUM> via a lower space under the blocking wall <NUM>. By the blocking wall <NUM>, it is possible to prevent the air discharged from the first discharge part <NUM> from flowing into the side of the second blower <NUM>.

The partitioning part <NUM> includes a space part cover <NUM>. The space part cover <NUM> may cover an upper side of the second space part <NUM> to block communication between the second space part <NUM> and the first discharge part <NUM>. Accordingly, the air discharged from the first discharge part <NUM> may be prevented from flowing into the second space part <NUM> by the space part cover <NUM>.

The space part cover <NUM> includes a cap-shaped cover main body <NUM>. Due to the cap shape, the upper space of the second space part <NUM> of the cover main body <NUM> can be easily shielded.

A first through-hole <NUM> through which a wiring or a harness provided in the second blower <NUM> passes is formed in the cover main body <NUM>. The first through-hole <NUM> may be formed in a substantially central portion of the upper surface part of the cover main body <NUM>.

The harness is understood as a wire bundle. The wiring or harness may include a wiring connecting the second PCB <NUM> and the power receiving part <NUM> to be described below.

A first leg groove <NUM> is formed on the outer circumferential surface of the cover main body <NUM>. The first leg groove <NUM> may have a shape recessed from the outer circumferential surface of the cover main body <NUM> and may be configured to insert at least a portion of the leg <NUM>. A plurality of the first leg grooves <NUM> may be provided corresponding to the number of the legs <NUM>.

The partitioning part <NUM> includes a PCB support part <NUM>. The PCB support part <NUM> may have a substantially disk shape and may be configured to have a narrower cross-sectional area toward the bottom. The PCB support part <NUM> may be disposed above the space part cover <NUM>. The PCB support part <NUM> and the space part cover <NUM> may be coupled to each other in the vertical direction. The second PCB <NUM> may be supported on the upper surface of the PCB support part <NUM>.

A fixing protrusion <NUM> for fixing the second PCB <NUM> is provided on the upper surface of the PCB support part <NUM>. A predetermined fastening member may be coupled to the fixing protrusion <NUM>. The fastening member couples the second PCB <NUM> and the fixing protrusion <NUM>.

A second through-hole <NUM> communicating with the first through-hole <NUM> and through which the wiring or harness passes is formed in a substantially central portion of the PCB support part <NUM>. When the PCB support part <NUM> and the PCB cover <NUM> are coupled, the second through-hole <NUM> and the first through-hole <NUM> may be vertically aligned. The wiring or the harness may pass through the aligned first and second through-holes <NUM> and <NUM>.

A second leg groove <NUM> into which at least a portion of the leg <NUM> can be inserted is formed in the edge of the PCB support part <NUM>. The leg <NUM> is coupled to the PCB cover <NUM> and the PCB support part <NUM> through the first and second leg grooves <NUM> and <NUM>, passes through a leg insertion part <NUM> of the first discharge guide <NUM>, and may be supported by the leg support part <NUM> of the second air guide <NUM>.

The partitioning part <NUM> includes a lever support device <NUM>. The lever support device <NUM> may be coupled to the upper side of the leg <NUM> and support the second lever device <NUM> of the second blower <NUM>.

The lever support device <NUM> has a substantially annular shape. The lever support device <NUM> includes a third space part <NUM> defining an installation space in which the PCB support part <NUM> and the second PCB <NUM> may be positioned. The third space part <NUM> is formed in a substantially central portion of the lever support device <NUM>.

The lever support device <NUM> further includes a leg coupling part <NUM> coupled to an upper portion of the leg <NUM>. The leg coupling part <NUM> is provided on the edge of the lever support device <NUM>, and a plurality of the leg coupling parts <NUM> may be provided corresponding to the number of the legs <NUM>. In other words, the upper end part of the leg <NUM> may be coupled to the leg coupling part <NUM>, and the lower end part thereof may be supported by the leg support part <NUM> of the second air guide <NUM>.

The lever support device <NUM> includes a blocking part <NUM> that blocks the air discharged through the first discharge part <NUM> from flowing into the second blower <NUM>. The blocking part <NUM> may be understood as a main body part of the lever support device <NUM> having an annular shape.

The lever support device <NUM> may be fixed to a lower portion of the second blower <NUM>. The PCB support part <NUM> and the space part cover <NUM> may be fixed to the lever support device <NUM>. In other words, the lever support device <NUM> may be coupled to the lower portion of the second blower <NUM>, and the partitioning part <NUM> may be fixed to the second blower <NUM>.

In the present embodiment, the second PCB part <NUM> is installed inside the partitioning part <NUM>. The second PCB part <NUM> may be disposed in the third space part <NUM>. The second PCB part <NUM> includes a second PCB <NUM>. The second PCB <NUM> may control components included in the second blower <NUM>. The second PCB <NUM> may be referred to as a second controller <NUM>.

The second PCB part <NUM> may include a second support plate <NUM> and a second support <NUM>. The second support plate <NUM> may be formed in a plate shape. The second PCB <NUM> may be fixed to the second support plate <NUM>. The second PCB <NUM> may be positioned on a bottom surface of the second support plate <NUM>. In this embodiment, the second support plate <NUM> may be disposed below the second PCB <NUM>. The second support <NUM> may be formed by extending the bottom surface of the space part cover <NUM> downward. The second support <NUM> may be coupled to the upper surface of the second support plate <NUM>.

The second PCB part <NUM> includes a power receiver <NUM>. The power receiver <NUM> may receive power transmitted from the power transmitter <NUM> of the first blower <NUM>. The power receiver <NUM> may be disposed on a bottom surface of the second support plate <NUM> to face the power transmitter <NUM>. When the space part cover <NUM> shields the second space part <NUM>, the power transmitter <NUM> and the power receiver <NUM> face each other, and wireless power can be transmitted and received. In this embodiment, the power receiver <NUM> may be disposed inside the lower portion of the space part cover <NUM>, and the second PCB <NUM> may be disposed above the PCB support part <NUM>. The second PCB <NUM> and the power receiver <NUM> may be electrically connected to each other by wires or harnesses passing through the first and second through-holes <NUM> and <NUM>. Meanwhile, when looking upward from the bottom of the partitioning part <NUM>, the power receiver <NUM> may be exposed to the outside. Since the power receiver <NUM> is disposed to be exposed to the outside, when the space part cover <NUM> shields the second space part <NUM>, the power transmitter <NUM> and the power receiver <NUM> may be positioned on the installation space part.

Meanwhile, the flow adjusting device <NUM> may be installed above the second discharge guide device <NUM>. The flow adjusting device <NUM> may change the discharge direction of the air discharged from the second discharge guide device <NUM>. The flow adjusting device <NUM> includes a second discharge part <NUM> through which the air flowing from the second discharge guide device <NUM> passes. The flow adjusting device <NUM> includes a third fan <NUM> for flowing air, and a third fan motor <NUM> for rotating the third fan <NUM>. The air that has passed through the second discharge guide device <NUM> may be discharged through the second discharge part <NUM>. In this embodiment, the flow adjusting device <NUM> may be rotated in the left and right direction and in the vertical direction at the upper side of the second discharge guide device <NUM>. In other words, the flow adjusting device <NUM> may change the discharge direction so that the air is discharged in the vertical direction and the left and right direction. The rotation in the left and right direction may be referred to as a first direction rotation, and the rotation in the vertical direction may be referred to as a second direction rotation. A first guide device for guiding the rotation in the first direction and a second guide device for guiding the rotation in the second direction are further provided between the flow adjusting device <NUM> and the second discharge guide device <NUM>.

<FIG> is a view illustrating a state where the first blower and the second blower are coupled according to an embodiment of the present invention, <FIG> is a view illustrating a state where power is supplied from a first blower to a second blower according to an embodiment of the present invention, and <FIG> is a view illustrating a state of a power transmitter and a power receiver according to an embodiment of the present invention.

Referring to <FIG>, the first blower <NUM> and the second blower <NUM> of the air purifier <NUM> according to the present invention may be coupled or separated. When the first blower <NUM> and the second blower <NUM> are coupled, it can be operated as a two-stage air purifier. When the first blower <NUM> and the second blower <NUM> are separated, it can be operated as a single-stage air purifier. In this embodiment, the second blower <NUM> and the partitioning part <NUM> are separated upward with respect to the first discharge guide <NUM> of the first blower <NUM> or can be coupled to the first blower <NUM>. In this case, the second blower <NUM> and the partitioning part <NUM> may be understood as one second blower <NUM>.

The first blower <NUM> may include a power transmitter <NUM> for transmitting wireless power to the second blower <NUM>. The second blower <NUM> may include a power receiver <NUM> for receiving the wireless power transmitted from the power transmitter <NUM>. The power transmitter <NUM> and the power receiver <NUM> may be operated when the second blower <NUM> is coupled to the first blower <NUM>. In this embodiment, wireless power is transmitted from the first blower <NUM> to the second blower <NUM>, but wireless power may be configured to be transmitted from the second blower <NUM> to the first blower <NUM>.

When the second blower <NUM> is coupled to the first blower <NUM>, the power transmitter <NUM> and the power receiver <NUM> may be positioned in an installation space part. The installation space part may be defined as a space formed by communicating with at least one of the motor receiving part <NUM>, the first space part <NUM>, the second space part <NUM>, and the third space part <NUM>. In this embodiment, the installation space part may be formed by communicating with first space part <NUM>, the second space part <NUM>, and a portion of the third space part <NUM> in which the space part cover <NUM> is positioned. The power transmitter <NUM> and the power receiver <NUM> can transmit and receive wireless power within the installation space part defined as one space. The third space part <NUM> may be referred to as an upper space part forming a part of the installation space part.

Hereinafter, a configuration provided in the first blower <NUM> will be described.

The first blower <NUM> may include a first controller <NUM>. The first controller <NUM> may be understood as the first PCB <NUM> of the first PCB part <NUM>. The first controller <NUM> may control the operation of the first blower <NUM>. The first controller <NUM> may control the operation of the power transmitter <NUM>, which will be described below. Wireless power may be transmitted from the power transmitter <NUM> under the control of the first controller <NUM>. The first controller <NUM> may control the operation of the power oscillator 100c, which will be described below.

The first blower <NUM> may include a power supply part 100b. The power supply part 100b may supply power to the first controller <NUM>. The power supply part 100b may supply power to be transmitted from a power transmitter <NUM> to be described below. The power supply part 100b may be understood as a configuration that supplies power for operating the first blower <NUM>.

The first blower <NUM> may include a power transmitter <NUM>. The power transmitter <NUM> may be disposed inside the first blower <NUM>. For example, the power transmitter <NUM> may be disposed in an installation space part formed inside the first blower <NUM>. In this embodiment, the power transmitter <NUM> may transmit wireless power upward. The configuration of the power transmitter <NUM> may be changed according to a wireless power transfer method. For example, the power transmitter <NUM> may be provided as a coil, an antenna, a resonator, or the like. In this embodiment, the power transmitter <NUM> may transmit wireless power by a magnetic induction method or a magnetic resonance method. When the power transmitter <NUM> is provided in a magnetic induction method, the power transmitter <NUM> and the power receiver <NUM> are disposed to face each other and may be disposed close to each other. When the power transmitter <NUM> is provided in a magnetic resonance method, the power transmitter <NUM> and the power receiver <NUM> may transmit and receive wireless power even if the power transmitter <NUM> and the power receiver <NUM> are spaced apart by a predetermined distance.

The first blower <NUM> may include a power oscillator 100c. The power oscillator 100c may adjust the frequency of the wireless power transmitted from the power transmitter <NUM>. In this case, the frequency adjusted by the power oscillator 100c may be understood as a resonant frequency of the wireless power that can be received by the power receiver <NUM> to be described below. The wireless power adjusted to a specific frequency by the power oscillator 100c may be transmitted from the power transmitter <NUM>. The operation of the power oscillator 100c may be controlled by the first controller <NUM>. Although referred to as the power oscillator 100c in this embodiment, the power oscillator may also be referred to as a power amplifier, a power resonator, or the like.

The first blower <NUM> may include a first fan motor <NUM>. The operation of the first fan motor <NUM> may be controlled by the first controller <NUM>. The first fan motor <NUM> may be operated by power supplied to the power supply part 100b. When the first fan motor <NUM> is operated, an air flow that is suctioned into the first suctioning part <NUM> of the first blower <NUM> and then discharged to the first discharge part <NUM> may be generated.

Hereinafter, a configuration provided in the second blower <NUM> will be described.

The second blower <NUM> may include a second controller <NUM>. The second controller <NUM> may control the operation of the second blower <NUM>. The second controller <NUM> may be understood as a second PCB <NUM> of the second PCB part <NUM>. The second controller <NUM> may control the operation of the power receiver <NUM> to be described below. The wireless power received by the power receiver <NUM> under the control of the second controller <NUM> may be supplied to a second fan motor <NUM> to be described below. The second controller <NUM> may control the operation of the power rectifier 200b, which will be described below.

The second blower <NUM> may include a power receiver <NUM>. The power receiver <NUM> may receive wireless power transmitted from the power transmitter <NUM>. The power receiver <NUM> may be disposed above the power transmitter <NUM>. The power receiver <NUM> may be disposed in one space with the power transmitter <NUM>. For example, the power receiver <NUM> may be disposed inside the partitioning part <NUM>. The power receiver <NUM> may be positioned in the third space part <NUM> of the partitioning part <NUM>. The power receiver <NUM> may be disposed on the installation space part when the partitioning part <NUM> is coupled to the first blower <NUM>.

The operation of the power receiver <NUM> may be controlled by the second controller <NUM>. The wireless power received by the power receiver <NUM> may be rectified by a power rectifier 200b to be described below and then supplied to the second fan motor <NUM>. The configuration of the power receiver <NUM> may be changed according to a wireless power transfer method. For example, the power receiver <NUM> may be provided as a coil, an antenna, a resonator, or the like. In this embodiment, the power receiver <NUM> may be configured in a method corresponding to the power transmitter <NUM> among a magnetic induction method or a magnetic resonance method capable of receiving wireless power transmitted from the power transmitter <NUM>.

The second blower <NUM> may include a power rectifier 200b. The power rectifier 200b may adjust the frequency of the wireless power received by the power receiver <NUM> to the frequency of power that can be consumed by the second fan motor <NUM>. Power rectified by the power rectifier 200b may be supplied to the second fan motor <NUM>. The operation of the power rectifier 200b may be controlled by the second controller <NUM>. Although referred to as the power rectifier 200b in the present embodiment, the power rectifier may also be referred to as a power regulator, a power converter, or the like.

The second blower <NUM> may include a second fan motor <NUM>. The second fan motor <NUM> may generate a flow of air that is suctioned into the second suctioning part <NUM> and then flows to the second discharge part <NUM>. In this embodiment, the second fan motor <NUM> may be operated by the power received by the power receiver <NUM>. The operation of the second fan motor <NUM> may be controlled by the second controller <NUM>.

Meanwhile, the flow adjusting device <NUM> coupled to the second blower <NUM> may be operated by receiving power from the second blower <NUM>. Alternatively, a power transmitter and a power receiver for transmitting and receiving wireless power may be further included between the second blower <NUM> and the flow adjusting device <NUM>.

In addition, when the second blower <NUM> is separated from the first blower <NUM>, the power supply may be cut off. Accordingly, the second blower <NUM> may further include a battery for operating the second blower <NUM>. The battery may be disposed inside the second blower <NUM>. The battery may be charged by wireless power received by the power receiver <NUM>. The battery may be understood as a power supply part that enables the second blower <NUM> to operate even when the second blower <NUM> is separated from the first blower <NUM>. An operation of the battery, such as charging of the battery, may be controlled by the second controller <NUM>.

Hereinafter, the configuration of the power transmitter <NUM> and the power receiver <NUM> will be described in detail.

The power transmitter <NUM> according to the present invention may be configured to transmit wireless power. The power receiver <NUM> may be configured to receive the wireless power transmitted from the power transmitter <NUM>. In this embodiment, the power transmitter <NUM> and the power receiver <NUM> may transmit and receive wireless power using a magnetic induction method or a magnetic resonance method. In addition, the power transmitter <NUM> and the power receiver <NUM> are disposed to face each other, and the wireless power transmitted from the power transmitter <NUM> may be received by the power receiver <NUM>. Hereinafter, the structures of the power transmitter <NUM> and the power receiver <NUM> configured to transmit and receive wireless power will be described. In this embodiment, the power transmitter <NUM> and the power receiver <NUM> may be formed in a coil structure. In this case, the power transmitter <NUM> may be defined as a primary coil, and the power receiver <NUM> may be defined as a secondary coil. In other words, the wireless power transmitted from the power transmitter <NUM> serving as the primary coil may be received by the power receiver <NUM> serving as the secondary coil.

The power transmitter <NUM> may include a first coil 530b and a first coil support part 530a. The first coil 530b may be provided in a state of being wound in a specific shape. For example, the first coil 530b may be supported by the first coil support part 530a in a circularly wound state. The first coil 530b may be installed in the first blower <NUM> in a state of being supported by the first coil support part 530a. A seating groove in which the first coil 530b can be seated may be formed in the first coil support part 530a.

The power transmitter <NUM> may include a first terminal 530c. The first terminal 530c may be defined as one end portion and the other end portion of the first coil 530b wound in a circle. The first terminal 530c may electrically connect the power transmitter <NUM> and the first controller <NUM>. In other words, electricity may be applied to the first coil 530b through the first terminal 530c. The first controller <NUM> may adjust whether to supply power to the second blower <NUM> by adjusting whether to transmit wireless power from the power transmitter <NUM>.

When a current is applied to the first coil 530b of the power transmitter <NUM>, an electromagnetic field may be generated in the first coil 530b. The electromagnetic field generated in the first coil 530b may cause an electromotive force to be induced in the second coil 630b of the power receiver <NUM>, which will be described below. When an electromotive force is induced in the second coil 630b, a current may flow in the second coil 630b to transmit power to the power receiver <NUM>.

The power receiver <NUM> may include a second coil 630b and a second coil support part 630a. The second coil 630b may be provided in a wound state in a specific shape. For example, the second coil 630b may be supported by the second coil support part 630a in a circularly wound state. The second coil 630b may be installed in the second blower <NUM> in a state of being supported by the second coil support 630a. A seating groove in which the second coil 630b can be seated may be formed in the second coil support part 630a.

The power receiver <NUM> may include a second terminal 630c. The second terminal 630c may be defined as one end portion and the other end portion of the second coil 630b wound in a circle. The second terminal 630c may electrically connect the power receiver <NUM> and the second controller <NUM>. In other words, electricity may be applied to the second controller <NUM> through the second terminal 630c.

The second coil 630b of the power receiver <NUM> may receive the electromagnetic field generated by the first coil 530b. When an electromagnetic field is applied to the second coil 630b, an electromotive force may be induced in the second coil 630b. When an electromotive force is induced in the second coil 630b, a current may flow in the power receiver <NUM>, and power may be supplied to the second power receiver <NUM>. When the electromagnetic field generated by the power transmitter <NUM> is not received by the power receiver <NUM>, the power supply may be stopped. When the power supply to the power receiver <NUM> is stopped, the power supply to the second blower <NUM> may be stopped.

<FIG> are views illustrating a state where air flows in the air purifier according to an embodiment of the present invention.

When the first fan <NUM> is driven, indoor air is suctioned into the first case <NUM> through the first suctioning part <NUM> and the base suctioning part <NUM>. The suctioned air passes through the first filter member <NUM>, and, in this process, foreign substances in the air may be filtered. In addition, while the air passes through the first filter member <NUM>, the air is suctioned in the radial direction of the first filter member <NUM> and filtered, and then flows upward.

The air that has passed through the first filter member <NUM> flows radially upward while passing through the first fan <NUM>, and a stable upward flow is achieved while passing through the first and second air guides <NUM> and <NUM>. The air passing through the first and second air guides <NUM> and <NUM> passes through the first discharge guide <NUM> and flows upward through the first discharge part <NUM>. The air discharged through the first discharge part <NUM> is guided by the partition plate <NUM> positioned above the first discharge guide <NUM> and discharged to the outside of the air purifier <NUM>.

When the second fan <NUM> is driven, indoor air is suctioned into the second case <NUM> through the second suctioning part <NUM>. The suctioned air passes through the second filter member <NUM>, and in this process, foreign substances in the air may be filtered. In addition, while the air passes through the second filter member <NUM>, the air is suctioned in the radial direction of the first filter member <NUM> and filtered, and then flows upward.

The air passing through the second filter member <NUM> flows upward in the radial direction while passing through the second fan <NUM>, and a stable upward flow occurs while passing through the third air guide device <NUM> and the second discharge guide device <NUM>. The air that has passed through the third air guide device <NUM> and the second discharge guide device <NUM> may be discharged through the second discharge part <NUM> via the flow adjusting device <NUM>.

The flow adjusting device <NUM> may be rotatably provided on the upper side of the second blower <NUM> in the vertical direction and the left and right direction. For example, when the flow adjusting device <NUM> is in the first position lying as illustrated in <FIG>, the air discharged from the flow adjusting device <NUM> flows upward. On the other hand, when the flow adjusting device <NUM> is in the second position erected as illustrated in <FIG>, the air discharged from the flow adjusting device <NUM> may flow toward the front upper side. By the flow adjusting device <NUM>, there is an advantage that the air volume discharged from the air purifier <NUM> is increased, and purified air can be supplied to a location far away from the air purifier <NUM>.

In detail, when the third fan <NUM> of the flow adjusting device <NUM> is driven, at least a portion of the air discharged from the second discharge guide device <NUM> can flow into the third fan housing <NUM>. In addition, the flowing air thereinto may pass through the third fan <NUM> and be discharged to the outside through the second discharge part <NUM>.

Meanwhile, when the second blower <NUM> and the partitioning part <NUM> are coupled to the first blower <NUM>, the power transmitter <NUM> of the first blower <NUM> can transmit wireless power. The wireless power transmitted from the power transmitter <NUM> may be received by the power receiver <NUM> of the second blower <NUM>. When the power receiver <NUM> receives wireless power, power for operation may be supplied to the second blower <NUM>.

Claim 1:
An air purifier (<NUM>) comprising:
a first blower (<NUM>) having a first fan (<NUM>) configured to generate an air flow from a first suction part (<NUM>) toward a first discharge part (<NUM>);
a second blower (<NUM>) having a second fan (<NUM>) configured to generate an air flow from a second suction part (<NUM>) toward a second discharge part (<NUM>);
an installation space part configured to be formed between the first blower (<NUM>) and the second blower (<NUM>);
a power transmitter (<NUM>) configured to be positioned inside the installation space part, to be fixed to any one of the first blower (<NUM>) and the second blower (<NUM>), and to transmit a wireless power; and
a power receiver (<NUM>) configured to be positioned inside the installation space part, to be fixed to the other one of the first blower (<NUM>) and the second blower (<NUM>),
characterised in that the power receiver is configured to receive the wireless power transmitted from the power transmitter (<NUM>) so that the power is supplied from one of the first blower (<NUM>) and the second blower (<NUM>) to the other one of the first blower (<NUM>) and the second blower (<NUM>).