Patent Description:
As a most widely used household appliance in daily life of people, the washing machine helps people get rid of the trouble of washing clothes and brings great convenience to people. However, the washing machine has certain defects such as long time consumption and large water consumption, along with social development, water resources as important natural resources become more and more important, the water-saving awareness of people is improved, and how to realize the water-saving function of the washing machine is particularly important.

In order to solve the water-saving problem of the washing machine, some patents, such as <CIT>, are provided, the invention relates to a drum washing machine which includes a box body, an inner drum and an outer drum are arranged in the box body, a door seal is arranged between the outer drum and the box body, the inner drum is connected with a driving device. The inner drum is a hole-free inner drum, the inner drum is a conical drum with a small diameter at the drum bottom and a large diameter at the drum opening, the drum opening of the inner drum is folded inwards in an arc shape, a water inlet guide pipe is arranged on the door seal, one end of the water inlet guide pipe is connected with a washing water rapid heating device, and the other end of the water inlet guide pipe penetrates through the door seal and extends into the inner drum. A water outlet and a water pressure detection device are arranged on the outer drum. According to the technical solution, the inner drum is a hole-free inner drum, water feeding of the inner drum is achieved through the water inlet guide pipe arranged on the door seal, water drainage is achieved in the dewatering process through the shape of the inner drum, and therefore water can be prevented from being stored between the inner drum and the outer drum, and the washing water consumption is greatly reduced.

According to the drum washing machine with the hole-free inner drum, a water inlet mode of the drum washing machine is achieved through the door seal, the door seal is mainly used for achieving sealing of a drum opening of the outer drum of the washing machine, and the sealing effect of the door seal is easily affected and is not easy to achieve due to the fact that the water inlet guide pipe is arranged on the door seal; besides, drainage of the patent is mainly achieved through combination of a drum-shaped structure and high-speed driving of a driving device, the drum-shaped structure is complex, the drainage effect and the sealing effect of the inner drum cannot be guaranteed, and many problems exist in practical application.

Besides, how to solve the drainage problem of the drum washing machine in the washing process and the drainage problem of the drum washing machine in the dewatering process are major problems faced by hole-free inner drums. <CIT> discloses a washing machnine including an outer drum, wherein the front end of the outer drum is fixed to the inner wall of a machine body, the inner drum is rotatably arranged in the outer drum, and a centrifugal valve is arranged on the side wall of the inner drum. During washing, the centrifugal valve is closed, water is contained in the inner drum, and no water exists between the inner drum and the outer drum; during dewatering, the centrifugal valve is opened, the washing water is discharged to the space between the inner drum and the outer drum and is discharged from the outer drum. <CIT> proposes to use the centrifugal valve to perform centrifugal drainage so as to solve the drainage problem of the hole-free drum washing machine, however, due to the fact that thread scraps are inevitably generated in the washing process, preventing the thread scraps from entering the centrifugal valve along with water flow is the precondition for ensuring normal work of the centrifugal valve, particularly, the centrifugal valve needs to be closed in the washing and rinsing stages of the drum washing machine, a spring is generally contained in the structure of the centrifugal valve, once the thread scraps are wound on the spring, the thread scraps are difficult to remove, and normal work of the spring is seriously influenced, the centrifugal valve cannot be closed in place. Therefore, the water-saving and self-cleaning effects of the hole-free inner drum cannot be realized.

A clothes lifting device for a washing machine comprising the features of the preamble portion of claim <NUM> is know from <CIT>. The clothes lifting device comprises a lifting shell secured to an inner wall of a drum to thereby for an accommodation chamber for a centrifugal drainage assembly. Broad notches at the foot of the shell allow washing water to flow into the accommodation space.

Further clothes lifting devices are known from <CIT> and <CIT>.

The object of the present invention is to improve working reliability of the centrifugal drainage assembly.

This technical problem is solved by a clothes lifting device according to claim <NUM> and a washing machine according to claim <NUM>.

The clothes lifting device of the disclosure can be installed on the inner wall of the inner drum of the drum washing machine, and in the clothes washing process, clothes are lifted to a certain height along with rotation of the inner drum to be beaten The centrifugal drainage assembly is integrally arranged in the clothes lifting device, the initial state of the centrifugal drainage assembly is the closed state, the inner drum is kept closed to independently contain washing water, and the centrifugal drainage assembly can be opened for drainage under the action of centrifugal force, so that drainage of the drum washing machine with the hole-free inner drum is achieved.

According to the drum washing machine, the inner drum door is installed on the drum opening of the inner drum, the hole-free drum design is adopted in the inner drum, the inner drum door and the inner drum jointly form the independent washing cavity, washing water is independently contained when clothes are washed, the space between the inner drum and the outer drum does not need to be filled with the washing/rinsing water, and the washing water consumption of the washing machine is greatly reduced; the possibility of dirt adhesion between the inner drum and the outer drum is avoided; the user health and the user experience are greatly improved, and water resources are greatly saved.

According to the centrifugal drainage assembly, the limiting structures which are arranged on the sealing plunger and the plunger base are matched with the elastic piece, so that elastic abutting of the sealing plunger is achieved, the sealing plunger is kept in a normally-closed state, the hole-free inner drum is kept in a closed state, and the functional effects of water saving and self-cleaning of the drum washing machine with the hole-free inner drum are achieved.

In the reciprocating motion process of the centrifugal drainage assembly in the closed state and the drainage state, the elastic piece is sealed in a sealing sleeve through a sealing portion, thread scraps are prevented from being hung, and the working stability of the centrifugal drainage assembly is ensured.

The filtering assemblies are arranged on the water inlets of the body and used for filtering water entering the accommodating chamber. Thus, the accommodating chamber where the centrifugal drainage assembly is located becomes an area independent of the interior of the inner drum, the area is kept communicating with the inner drum through the water inlets, the filtering assemblies can effectively filter thread scraps in water entering from the water inlets, the centrifugal drainage assembly is located in an environment without thread scraps or with few thread scraps. The possibility of attachment of thread scraps is fundamentally avoided, and the working reliability of the centrifugal drainage assembly is effectively guaranteed.

The clothes lifting device for the washing machine and the drum washing machine are described in detail according to the following drawings.

As shown in <FIG>, the drum washing machine with the hole-free inner drum of the front-open structure is simple in structure, and the space between the inner drum and the outer drum does not need to be filled with the washing/rinsing water, so that the washing water consumption of the washing machine is greatly reduced. The possibility of dirt adhesion between the inner drum and the outer drum is avoided. The user health and the user experience are greatly improved, and water resources are greatly saved.

The drum washing machine of the embodiment is provided with a housing <NUM>. The housing <NUM> includes an upper deck plate <NUM>, a front panel, a rear back plate and a bottom plate. Bottom feet <NUM> are fixedly installed on the bottom plate and used for supporting the whole washing machine. An outer drum <NUM> is arranged in the housing <NUM>, and an inner drum <NUM> is coaxially arranged in the outer drum <NUM>. The outer drum <NUM> is mainly used for collecting drained water of the inner drum <NUM> and drained water of high-speed centrifugal dewatering of the inner drum <NUM>. The inner drum <NUM> rotates, and preferably, lifting ribs are arranged, so that the clothes are continuously lifted, dropped and beaten, and the clothes are conveniently cleaned. The inner drum <NUM> is of a hole-free structure. The outer drum <NUM> is provided with a central installing hole for installing and fixing a bearing <NUM>; and an inner drum shaft <NUM> fixedly connected with the inner drum <NUM> penetrates through the bearing <NUM> and is connected with a driving motor <NUM>. An inner drum door <NUM> capable of being opened/closed is installed on a drum opening in the front portion of the inner drum <NUM>, and therefore the inner drum <NUM> is of a sealed cabin structure.

A machine door <NUM> capable of being opened/closed is installed on the housing <NUM>.

As shown in <FIG>, the clothes lifting device for the washing machine and the drum washing machine are provided in the embodiment.

The clothes lifting device for the washing machine includes:.

The clothes lifting device <NUM> of the disclosure can be installed on the inner wall of the inner drum of the drum washing machine, and in the clothes washing process, the clothes are lifted to a certain height along with rotation of the inner drum to be beaten. In the embodiment, the centrifugal drainage assembly is integrated in the clothes lifting device, the initial state of the centrifugal drainage assembly is closed state, the inner drum is kept closed to independently contain washing water, and the centrifugal drainage assembly can be opened to drain water under the action of centrifugal force, so that drainage of the drum washing machine with the hole-free inner drum is achieved.

Therefore, the centrifugal drainage assembly is arranged inside the lifting device <NUM>, clothes lifting and drainage of the drum washing machine with the hole-free inner drum are achieved, modular supply is formed, production and assembly are facilitated, and the assembly efficiency is improved.

The centrifugal drainage assembly includes the compression spring to provide pressing force to keep the closed state which is the initial state of the centrifugal drainage assembly in the present embodiment, water where the centrifugal drainage assembly is located inevitably contains clothes thread scraps, and if the thread scraps are hung on the elastic piece, the thread scraps are not prone to falling off; even though drainage water flow, centrifugal water flow and centrifugal force cannot separate thread scraps from the elastic piece. Furthermore, due to the fact that the thread scraps hung on the elastic piece have a certain length, part of the non-hung parts reach a drainage hole of the inner drum and/or the position close to the sealing plunger under the action of drainage water flow, centrifugal water flow and centrifugal force, and sealing failure is caused.

As the centrifugal drainage assembly is an important drainage part of the hole-free inner drum, whether the centrifugal drainage assembly can work normally or not determines whether the hole-free inner drum can achieve the purposes of saving water and cleaning or not. Therefore, in order to avoid the influence on the centrifugal drainage assembly caused by the attachment of the thread scraps, the filtering assemblies are arranged on the water inlets of the body and are used for filtering the water entering the accommodating chamber. Thus, the accommodating chamber where the centrifugal drainage assembly is located becomes an area independent of the interior of the inner drum, the area is kept communicating with the inner drum through the water inlets, the filtering assembly can effectively filter thread scraps in water entering from the water inlets, the centrifugal drainage assembly is located in an environment without thread scraps or with few thread scraps. The possibility of attachment of thread scraps is fundamentally avoided, and the working reliability of the centrifugal drainage assembly is effectively guaranteed.

Further, the body in the embodiment includes a lifting shell <NUM> internally provided with an open cavity and a lifting base body <NUM> which is detachably installed at the open end of the open cavity of the lifting shell, and an accommodating chamber is formed between the lifting base body <NUM> and the lifting shell. The centrifugal drainage assembly is installed on the lifting base body. The water inlets <NUM> are arranged in the lifting shell, and the filtering assemblies are arranged on the water inlets <NUM> of the lifting shell.

Specifically, the lifting shell <NUM> includes a plurality of shell side walls which form a circle, the lifting base body <NUM> is arranged in the opening of the lifting shell <NUM> to be connected with the shell side walls, and the water inlets <NUM> are arranged in the shell side walls and located at a joint of the shell side walls and the lifting base body and middles of edges of open ends of the shell side walls. The lifting base body <NUM> is provided with a communicating portion communicating with the accommodating chamber.

In the embodiment, the water inlets <NUM> are arranged in the middles of the edges of the open ends of the shell side walls, and are arranged close to the drum wall after being installed on the drum wall of the inner drum, so that centrifugal water flow can better flow into the lifting shell in a mode of being attached to the inner drum wall during water inlet and centrifugal water drainage.

Furthermore, the shell side walls include two first side walls extending in the axial direction of the inner drum <NUM> of the washing machine, an upper side wall and a lower side wall which are connected with the two ends of the two first side walls, wherein one ends of the two first side walls are in transition connection, and the water inlets <NUM> are arranged in the two first side walls.

As an implementation mode of the embodiment, the filtering assembly includes a filter screen <NUM> and a filter screen frame <NUM> used for installing the filter screen <NUM>, the filter screen frame <NUM> is arranged in the open cavity of the lifting shell <NUM>, and the filter screen <NUM> correspondingly covers the water inlets <NUM>.

Furthermore, a clamping groove is arranged in the inner wall face of the shell side wall, a clamping block is arranged on the filter screen frame <NUM>, and the clamping block is clamped in the clamping groove and used for detachably installing the filter screen frame on the inner wall of the side wall of the lifting shell. In this way, the filtering assembly can be detached conveniently, and thread scraps can be cleared away.

Preferably, the clamping groove is a sliding groove extending along the shell side wall, and the clamping block is able to be clamped along the sliding groove in a sliding mode.

Furthermore, in order to achieve disassembly and assembly of the filtering assembly and clean thread scraps, the upper side wall or the lower side wall is provided with an opening for the filtering assembly to be inserted into or pulled out, and the filtering assembly further includes a blocking cover which seals the opening after the filter screen frame is inserted into the lifting shell from the upper side wall or the lower side wall.

As one implementation mode of the embodiment, the centrifugal drainage assembly includes a plunger base arranged in the middle of the lifting base body in a penetrating mode and a sealing plunger arranged in the plunger base in a reciprocating motion mode. The water inlets of the two first side walls are correspondingly provided with the filtering assemblies respectively, the plunger base is located between the two filtering assemblies, or the middle of each filtering assembly is provided with an avoiding channel corresponding to the plunger base.

As shown in <FIG>, the embodiment of the disclosure provides the clothes lifting device for the washing machine and the drum washing machine.

The clothes lifting device <NUM> for the washing machine includes:.

The clothes lifting device can be installed on the inner wall of the inner drum of the drum washing machine, and in the clothes washing process, the clothes are lifted to a certain height along with rotation of the inner drum and are beaten to fall down. In the embodiment, the centrifugal drainage assembly is integrated in the clothes lifting device, the initial state of the centrifugal drainage assembly is the closed state, the inner drum is kept closed to independently contain washing water, and the centrifugal drainage assembly can be opened to drain water under the action of centrifugal force, so that drainage of the drum washing machine with the hole-free inner drum is achieved.

Therefore, the centrifugal drainage assembly is arranged in the lifting device, clothes lifting and drainage of the drum washing machine with the hole-free inner drum are achieved, modular supply is arranged, production and assembly are facilitated, and the assembly efficiency is improved.

As a preferable implementation mode of the embodiment, the centrifugal drainage assembly includes a sealing plunger capable of doing reciprocating motion and an elastic piece <NUM> used for elastic reset of the sealing plunger, the body is provided with a plunger base used for installation of the sealing plunger, the sealing plunger is arranged in the plunger base in a reciprocating motion mode. The sealing plunger and the plunger base are each provided with a limiting structure used for abutting against and limiting the elastic piece.

The centrifugal drainage assembly in the present embodiment, the elastic piece <NUM> is matched with the limiting structures respectively arranged on the sealing plunger and the plunger base, so that the sealing plunger is elastically abutted, the sealing plunger is kept in a normally-closed state, the hole-free inner drum is kept in a closed state, and the functional effects of water saving and self-cleaning of the drum washing machine with the hole-free inner drum are achieved.

Further, the sealing plunger includes a sealing column <NUM> and a sealing plug <NUM>, the sealing column <NUM> includes a guide column section <NUM> and a sealing column section <NUM> arranged at one end of the guide column section <NUM>, and the sealing plug <NUM> is arranged at the end of the sealing column section <NUM>. The plunger base is provided with a sleeve portion, the sealing column section <NUM> is arranged in the sleeve portion in a sliding and sealing mode, and the elastic piece is arranged in the sealing sleeve in a sealing mode through the sealing column section <NUM>.

The limiting structure includes a first limiting structure arranged on the guide column section <NUM> and/or the sealing column section <NUM> and a second limiting structure arranged at the end, away from the sealing portion, of the sleeve portion, and the two ends of the elastic piece <NUM> abut against the first limiting structure and the second limiting structure respectively.

As shown in <FIG>, as an implementation mode of the embodiment, the first limiting structure is a first limiting groove <NUM> arranged in the end, close to the guide column section <NUM>, of the sealing column section <NUM>, and one end of the elastic piece <NUM> abuts against the interior of the first limiting groove <NUM>.

Specifically, the sleeve portion includes a cylindrical sealing sleeve <NUM>, the guide column section <NUM> and the sealing column section <NUM> are both cylindrical, and the outer diameter of the guide column section <NUM> is smaller than that of the sealing column section <NUM>; the outer diameter of the sealing column section <NUM> is equal to or slightly smaller than the inner diameter of the sealing sleeve <NUM>; the first limiting groove <NUM> is an annular limiting groove which is arranged in the sealing column section <NUM> and located on the periphery of the guide column section <NUM>.

As shown in <FIG>, as another implementation mode of the embodiment, the first limiting structure is a limiting boss <NUM> arranged at the end, close to the guide column section <NUM>, of the sealing column section <NUM>, the elastic piece <NUM> is a cylindrical spring, and the inner circumference of the cylindrical spring is connected to the limiting boss <NUM> in a clamped mode.

Specifically, the sleeve portion includes a cylindrical sealing sleeve <NUM>, the guide column section <NUM> and the sealing column section <NUM> are both cylindrical, and the outer diameter of the guide column section <NUM> is smaller than that of the sealing column section <NUM>; the outer diameter of the sealing column section <NUM> is equal to or slightly smaller than the inner diameter of the sealing sleeve <NUM>; the limiting boss <NUM> is a cylindrical boss arranged on the end face of the end, close to the guide column section <NUM>, of the sealing column section <NUM>, the outer diameter of the guide column section <NUM> is smaller than that of the cylindrical boss, and the outer diameter of the cylindrical boss is smaller than that of the sealing column section <NUM>.

As shown in <FIG>, as another implementation mode of the embodiment, the first limiting structure is a locking hole arranged in the guide column section <NUM>/sealing column section <NUM>, the elastic piece <NUM> is provided with a locking rod <NUM>, and the locking rod <NUM> is inserted into the limiting hole.

As shown in <FIG>, the second limiting structure in the embodiment is a second limiting groove arranged in the end, away from the sealing column section <NUM>, in the sleeve portion.

Specifically, the sleeve portion includes a sealing sleeve <NUM>, the end portion, away from the sealing column section <NUM>, of the sealing sleeve <NUM> is folded towards the interior of the sealing sleeve <NUM> and extends in the radial direction of the sealing sleeve to form a horizontal flange, and the end portion of the horizontal flange is folded towards the interior of the sealing sleeve <NUM> and extends along the axis to form a vertical flange. The vertical flange, the horizontal flange and the wall of the sealing sleeve <NUM> jointly define an annular limiting groove.

Furthermore, the vertical flange forms a guide sleeve <NUM> of the sleeve portion, and the guide column section <NUM> is matched with the guide sleeve <NUM>, so that the guide column section <NUM> reciprocates under the guide of the guide sleeve <NUM>.

As shown in <FIG>, <FIG>, <FIG> and <FIG>, the centrifugal drainage assembly includes the compression spring to provide pressing force to keep the closed state due to the fact that the initial state of the centrifugal drainage assembly is the closed state. Water where the centrifugal drainage assembly is located inevitably contains clothes thread scraps, and if the thread scraps are hung on the elastic piece, the thread scraps are not prone to falling off; even though drainage water flow, centrifugal water flow and centrifugal force cannot separate thread scraps from the elastic piece. Furthermore, due to the fact that the thread scraps hung on the elastic piece have a certain length, part of the non-hung parts reach a drainage hole of the inner drum and/or the position close to the sealing plunger under the action of drainage water flow, centrifugal water flow and centrifugal force, and sealing failure is caused.

As the centrifugal drainage assembly is an important drainage part of the hole-free inner drum, whether the centrifugal drainage assembly can work normally or not directly determines whether the hole-free inner drum can achieve the purposes of saving water and cleaning or not. Therefore, in order to prevent attachment of the thread scraps from affecting the centrifugal drainage assembly, the clothes lifting device <NUM> for the washing machine of the embodiment includes a lifting shell <NUM>, which is internally provided with an open cavity; a lifting base body <NUM>, which covers the open end of the lifting shell <NUM> in a sealing mode to form an accommodating chamber; and an inlet water filtering portion, which is arranged on the lifting shell <NUM> and/or the lifting base body <NUM> to communicate with the accommodating chamber and is used for filtering inlet water of the accommodating chamber. Thus, the accommodating chamber where the centrifugal drainage assembly is located becomes an area independent of the interior of the inner drum, the area is kept communicating with the inner drum through the water inlet filtering portion and can effectively filter the thread scraps, the centrifugal drainage assembly is located in an environment without the thread scraps or with few thread scraps, the possibility of attachment of the thread scraps is fundamentally avoided, and the working reliability of the centrifugal drainage assembly is effectively ensured.

In order to filter water entering the accommodating chamber, as one implementation mode of the embodiment, the water inlet filtering portion includes a shell water inlet filtering portion arranged on the lifting shell <NUM>, and the shell water inlet filtering portion includes a plurality of water filtering holes arranged in the lifting shell and communicating with the accommodating chamber. According to the embodiment, the hole diameter of the water filtering holes is small, but the number of the water filtering holes distributed in the surface of the lifting shell <NUM> is large, on one hand, the water inlet and outlet flow is guaranteed, and on the other hand, the thread scraps can be effectively filtered.

A plurality of spraying openings <NUM> are arranged in the lifting shell <NUM>, the water inlet filtering portion includes a shell water inlet filtering portion arranged on the lifting shell, and the shell water inlet filtering portion is a filter screen covering all the spraying openings <NUM>. According to the embodiment, the size and the number of the spraying openings <NUM> are not limited any more, the thread scraps can be filtered through the filter screen, and the filtering effect is better. In addition, in order to more conveniently mount and dismount the filter screen, a filter screen dismounting opening is arranged in the lifting shell <NUM>, and a cover plate capable of being opened/closed is installed on the filter screen dismounting opening.

In order to ensure that the accommodating chamber is located in an independent area, the lifting base body <NUM> is a sealing cover plate matched with the open end of the lifting shell <NUM>.

As shown in <FIG>, not being part of the invention, the lifting base body <NUM> of the embodiment is in a totally-closed state, and inlet water can only enter the accommodating chamber through the water filtering holes or the spraying openings <NUM> in the lifting shell <NUM>.

As shown in <FIG>, the water inlet filtering portion of the embodiment includes a base body water inlet filtering portion arranged on the lifting base body <NUM>, and the base body water inlet filtering portion includes a plurality of base body water filtering holes <NUM> which are arranged in the lifting base body <NUM> and communicating with the accommodating chamber.

As another implementation mode of arranging the water inlet filtering portion on the lifting base body <NUM> in the embodiment, the lifting base body <NUM> is provided with a plurality of water permeable openings, the water inlet filtering portion includes a base body water inlet filtering portion arranged on the lifting base body, and the base body water inlet filtering portion is a filter screen covering all the water permeable openings. Similarly, in order to facilitate disassembly and assembly of the filter screen, a filter screen disassembly opening is arranged in the lifting shell <NUM>, and a cover plate capable of being opened and closed is installed on the filter screen disassembly opening.

In addition, the lifting shell <NUM> includes an annular base portion <NUM> and a protruding portion <NUM>, wherein the protruding portion <NUM> and the annular base portion <NUM> are integrally arranged, and the protruding portion <NUM> protrudes and extends towards one side. In the embodiment, the lifting base body <NUM> extends into the annular base portion <NUM> and is fixedly connected with the annular base portion <NUM> in the circumferential direction, and the annular base portion <NUM> is provided with the water inlets <NUM> so that water can enter the lifting base body <NUM>.

Similarly, in the embodiment, the water inlets <NUM> can be designed into a plurality of water filtering holes with small hole diameters, or a filter screen is installed on the water inlets to achieve thread scrap filtering, and at the moment, the water inlet filtering portion does not need to be arranged on the lifting base body <NUM> anymore.

Furthermore, the centrifugal drainage assembly includes a sealing plunger capable of moving in a reciprocating mode and an elastic piece <NUM> used for elastic reset of the sealing plunger, the lifting base body <NUM> is provided with a plunger base used for installing the sealing plunger, the sealing plunger is provided with a sealing portion, the plunger base is provided with a sleeve portion, and the sealing portion is arranged in the sleeve portion in a sliding and sealing mode, and the elastic piece is arranged in the sealing sleeve in a sealing mode through the sealing portion.

Further, the sealing plunger includes a sealing column <NUM> and a sealing plug <NUM>, the sealing column <NUM> includes a guide column section <NUM>, the sealing portion is a sealing column section <NUM> arranged at one end of the guide column <NUM>, and the sealing plug <NUM> is arranged at the end of the sealing column section <NUM>. The sleeve portion includes a guide sleeve <NUM> and a sealing sleeve <NUM>, the guide column section <NUM> is arranged in the guide sleeve <NUM> in a reciprocating motion mode, and the sealing column section <NUM> is arranged in the sealing sleeve <NUM> in a sliding and sealing mode; the elastic piece <NUM> is arranged in the guide sleeve <NUM>, one end of the elastic piece <NUM> abuts against the guide sleeve <NUM>, and the other end of the elastic piece <NUM> abuts against the guide column section <NUM> or the sealing column section <NUM>. According to the embodiment of the disclosure, the guide column section <NUM> reciprocates in the guide sleeve <NUM> to drive the sealing plug <NUM> to reciprocate along a determined path so as to realize the opening and closing control of the water outlet of the inner drum, and the sealing column section <NUM> is arranged in the sealing sleeve <NUM> in a sliding and sealing mode so as to realize the sealing of the elastic piece <NUM> in the guide sleeve <NUM>, so that the elastic piece <NUM> is prevented from being exposed and hanging the thread scraps.

Furthermore, the guide sleeve <NUM> and the sealing sleeve <NUM> are both cylindrical and have the same inner diameter, the guide column section <NUM> and the sealing column section <NUM> are both cylindrical, and the outer diameter of the guide column section <NUM> is smaller than that of the sealing column section <NUM>. The outer diameter of the sealing column section <NUM> is equal to or slightly smaller than the inner diameter of the sealing sleeve <NUM>.

Preferably, the guide sleeve <NUM> and the sealing sleeve <NUM> are integrally formed, and the guide column section <NUM> and the sealing column section <NUM> are integrally formed.

In addition, an inner ring matched with the guide column section <NUM> is arranged in the guide sleeve <NUM>, the inner ring and the inner wall of the guide sleeve <NUM> are arranged in a spaced mode, and an opening is arranged in the direction facing the sealing sleeve <NUM> to form an installation cavity <NUM> for installing the elastic piece <NUM>. Preferably, the elastic piece <NUM> is a cylindrical spring which is arranged on the guide column section <NUM> in a sleeving mode.

An installation column <NUM> is arranged at the end of the sealing column section <NUM>, a limiting protruding ring is arranged on the installation column section <NUM>, the sealing plug <NUM> is provided with a limiting groove with an opening, and the limiting protruding ring is installed in the limiting groove in a limited mode.

Further, the centrifugal drainage assembly includes a centrifugal piece which generates centrifugal motion under the action of centrifugal force, the centrifugal piece includes a connecting portion <NUM> and a balance weight portion <NUM>, one end of the connecting portion <NUM> is connected with the balance weight portion <NUM>, the other end of the connecting portion <NUM> is rotatably connected with the sealing plunger <NUM>, and the middle of the connecting portion <NUM> is rotatably installed on the plunger base to form a lever structure.

One end of the connecting portion <NUM> is provided with a first connecting hole <NUM> which is rotatably connected with the end portion of the sealing plunger <NUM>, and the middle of the connecting portion <NUM> is provided with a second connecting hole <NUM>.

In order to achieve fixed connection between the lifting shell <NUM> and the lifting base body <NUM>, the lifting base body <NUM> is provided with a base body fixing column <NUM>, a connecting rib <NUM> extending towards the open end is arranged in the open cavity of the lifting body <NUM>, and the base body fixing column <NUM> is fixedly connected with the connecting rib <NUM>.

Preferably, the centrifugal drainage assembly is arranged in the middle of the lifting base body <NUM>, and the at least two base body fixing columns <NUM> are symmetrically arranged on the two sides of the centrifugal drainage assembly.

Furthermore, the base body fixing column <NUM> and the connecting rib <NUM> are clamped and positioned through a clamping structure, and the base body fixing column <NUM> and the connecting rib <NUM> are fixedly connected through a connecting piece <NUM> after being positioned.

Preferably, the connecting rib <NUM> is provided with a clamping protrusion, the base body fixing column <NUM> is provided with a channel for the connecting rib to stretch in, and the peripheral wall of the channel is provided with a clamping groove connected with the clamping protrusion in a matched and clamped mode.

The connecting rib <NUM> is provided with a connecting hole, the base body fixing column <NUM> is provided with a positioning hole opposite to the connecting hole, the connecting piece <NUM> penetrates through the positioning hole to be fixedly connected with the connecting hole, and preferably, the connecting piece <NUM> is a connecting screw.

In order to achieve the purpose that the lifting device is installed in the inner drum, shell fixing columns <NUM> used for fixedly assembling the lifting device are arranged at the two ends of an opening of the lifting shell <NUM> respectively, the positions, corresponding to the shell fixing columns <NUM>, of the lifting base body <NUM> are arranged in an avoiding mode, and the shell fixing columns <NUM> enable the structure, installed in the inner drum, of the lifting device to be unchanged. The learning cost of assembly is reduced, and the assembly efficiency is improved.

As shown in <FIG>, the embodiment of the disclosure also provides a drum washing machine with the clothes lifting device for the washing machine, including:.

According to the drum washing machine, the inner drum door <NUM> is installed on the drum opening of the inner drum <NUM>, the inner drum <NUM> adopts the hole-free drum design, the inner drum door <NUM> and the inner drum <NUM> jointly form the independent washing cavity, washing water is independently contained when clothes are washed, and the space between the inner drum and the outer drum does not need to be filled with washing/rinsing water, so that the washing water consumption of the washing machine is greatly reduced; the possibility of dirt adhesion between the inner drum and the outer drum is avoided; the user health and the user experience are greatly improved, and water resources are greatly saved.

Furthermore, a fixing hole used for fixedly assembling the lifting device <NUM> is arranged in the side wall of the inner drum <NUM>, the lifting device <NUM> is fixed to the fixing hole in a sealed mode through a connecting piece, the inner drum <NUM> is kept closed through sealed connection, and the purpose of independently containing washing water is achieved.

According to the control method of the drum washing machine, the washing machine includes an inner drum, washing water is contained in the inner drum when clothes are washed, a drainage hole is arranged in the side wall of the inner drum, and a lifting device for controlling the drainage hole to be switched on or switched off is installed on the drainage hole. And the control method includes the steps that in the clothes washing process of the washing machine, the rotation speed of the inner drum is controlled to reach or exceed the set rotation speed N0; a centrifugal drainage assembly of the lifting device opens the drainage hole under centrifugal force for inner drum drainage.

The drainage device is provided with the centrifugal drainage assembly in the present embodiment, according to the control method, the centrifugal drainage assembly is opened to achieve drainage by controlling the inner drum to rotate to generate centrifugal force, and drainage and dewatering of the drum washing machine with the hole-free inner drum are achieved in the mode of the centrifugal drainage assembly and program control.

As an implementation mode of the embodiment, after the washing machine executes a washing program or a rinsing program, the rotating speed of the inner drum is controlled to reach a first rotating speed N1 and is maintained for a set time t1, N1 is larger than or equal to N0, and N0 is larger than the rotating speed of the inner drum in the washing program or the rinsing program; when the rotating speed N1 of the inner drum is kept and the rotating time reaches t1, the inner drum is controlled to stop rotating and enter the next procedure.

Preferably, N1 is <NUM>-<NUM> revolutions per minute, more preferably, <NUM> +/-<NUM> revolutions per minute, and further preferably, <NUM> +/-<NUM> revolutions per minute; and
preferably, the range of t1 is between <NUM> and <NUM> minutes, and more preferably, the range of t1 is between <NUM> and <NUM> minutes.

Further, the washing machine includes a weighing device used for weighing the weight in the inner drum, the weighing device detects the weight WO in the inner drum before the inner drum starts to rotate at N1, the weighing device detects the weight W1 in the inner drum after the rotation time reaches t1, and the control system judges whether drainage is normal or not according to comparison between W1 and WO.

Furthermore, the control system judges whether drainage is abnormal or not by comparing the value k of W1/WO, if k is larger than or equal to <NUM>, the control system judges that drainage is abnormal and gives an alarm, and if not, drainage is normal.

As another implementation mode of the embodiment, after the washing machine executes the washing program or the rinsing program, the rotating speed of the inner drum is controlled to reach the first rotating speed N1, N1 is larger than or equal to N0, and N0 is larger than the rotating speed of the inner drum in the washing program or the rinsing program; and after the water in the inner drum is completely drained, the inner drum is controlled to stop rotating to enter the next procedure.

Further, the washing machine includes a weighing device used for weighing the weight in the inner drum, and in the process that the washing machine controls the inner drum to rotate at N1, the control system judges whether drainage is completed or not according to the weight value, detected by the weighing device in real time, in the inner drum.

Further, the step that the control system judges whether drainage is completed or not according to the weight value, detected by the weighing device in real time, in the inner drum includes:.

Furthermore, the control system judges whether drainage is normal or not by comparing the change conditions of n1, n2,. and nt, and if n1 = n2 =. = nt = <NUM>, the control system judges that drainage is abnormal and gives an alarm.

Further, the washing machine executes a dewatering program, and the lowest dewatering rotating speed N2 in the dewatering program is larger than or equal to N0.

The embodiment of the disclosure mainly solves the problem of how to accurately determine the water inflow of the drum washing machine with the hole-free inner drum, and the specific solution is as follows:
as shown in <FIG>, the drum washing machine includes an inner drum <NUM> and a water inlet pipeline communicating with the inner drum <NUM>, the inner drum <NUM> is a hole-free inner drum and contains washing water when clothes are washed, and a flow sensor <NUM> used for detecting the water inlet flow is arranged on the water inlet pipeline.

According to the embodiment, the flow sensor <NUM> is arranged on the water inlet pipeline to monitor the water inlet flow, when the set water inlet amount is reached, the water inlet valve <NUM> is closed, and water inlet is completed. According to the embodiment, the flow sensor is adopted to solve the water inlet problem of the drum washing machine with the hole-free inner drum according to the set water level, the washing effect is ensured, the structure is simple, and control is convenient.

Further, the drum washing machine includes a water inlet valve <NUM> and a detergent box <NUM>, the water inlet pipeline includes a first water inlet pipe and a second water inlet pipe, the outlet end of the water inlet valve <NUM> communicates with the detergent box <NUM> through the first water inlet pipe, and the outlet end of the detergent box <NUM> communicates with the inner drum <NUM> through the second water inlet pipe, and the flow sensor <NUM> is arranged on the first water inlet pipe or the second water inlet pipe.

Preferably, the flow sensor <NUM> is arranged on the first water inlet pipe, so that the detergent in the detergent box can be prevented from entering the flow sensor <NUM>.

The drum washing machine includes a main controller <NUM>, and the flow sensor <NUM> is electrically connected with the main controller <NUM> through a circuit. The main controller <NUM> can collect the water inlet amount of the inner drum <NUM> in real time, and the water inlet valve <NUM> is closed when the set water inlet amount is reached.

As an implementation mode of the embodiment, the flow sensor <NUM> is a rotor flow sensor, or a turbine flow sensor, or an ultrasonic flow sensor, or an electromagnetic flow sensor, or a pore plate flow sensor.

According to the embodiment, a flow sensor <NUM> can be arranged at any position of a water inlet pipeline, preferably, the flow sensor <NUM> is arranged at the rear portion of a water inlet valve <NUM> to accurately meter the flow of water entering the sealed inner drum <NUM>, the flow sensor <NUM> is connected with the main controller <NUM> through a circuit, and the main controller <NUM> can collect the water inlet amount of the inner drum <NUM> in real time, so that the water inlet valve <NUM> is closed when the set water inlet amount is reached.

In order to feed water into the hole-free inner drum, the drum washing machine includes a driving motor <NUM> and an inner drum shaft <NUM>, the driving motor <NUM> is in transmission connection with the inner drum <NUM> through the inner drum shaft <NUM> to drive the inner drum <NUM> to rotate, a hollow channel <NUM> communicating with the interior of the inner drum <NUM> is arranged in the inner drum shaft <NUM>, and the water inlet pipeline communicates with the hollow channel of the inner drum shaft <NUM>.

Specifically, the inner drum shaft <NUM> is connected with a driving motor <NUM>, the driving motor <NUM> includes a stator and a rotor, and the rotor is fixedly connected with the inner drum shaft <NUM>; a through hole is arranged in the center of the rotor, and the water inlet pipeline penetrates through the through hole of the rotor to communicate with the hollow channel <NUM> of the inner drum shaft <NUM>.

Furthermore, a first dynamic sealing structure <NUM> is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel <NUM> of the inner drum shaft <NUM>.

In order to achieve drainage of the hole-free inner drum, the drum washing machine includes an outer drum <NUM>, an inner drum drainage hole is arranged in the side wall of the inner drum <NUM>, a normally-closed one-way valve plug <NUM> is installed in the inner drum drainage hole, and an ejector rod mechanism <NUM> used for ejecting the one-way valve plug <NUM> open for drainage is installed on the outer drum <NUM>.

As an implementation mode of the embodiment, a locking mechanism used for locking rotation of the inner drum <NUM> is further arranged on the outer drum <NUM>, and after the locking mechanism locks the inner drum, the ejector rod mechanism <NUM> ejects the one-way valve plug <NUM> open for drainage.

As another implementation mode of the embodiment, a plurality of dewatering holes are arranged in the side wall of the inner drum <NUM>, centrifugal valves are installed on the dewatering holes, the inner drum is controlled to reach a certain rotating speed, and the centrifugal valves are opened under the action of dewatering centrifugal force to conduct washing drainage or dewatering drainage.

The embodiment of the disclosure also provides a control method of the drum washing machine, the washing machine executes a washing/rinsing program, in the water inlet process, the flow sensor detects the water inlet flow value in real time, the washing machine calculates the water inlet amount according to the water inlet flow value and the water inlet time, and water inlet is stopped when the water inlet amount reaches the set water inlet amount of the washing machine.

The drum washing machine is provided with a plurality of water inlet flow values which can be selected by a user, and water is fed into the washing machine according to the water inlet flow value selected by the user.

The drum washing machine has a clothes weighing function, and water can be fed by determining the water inlet flow value according to the weight of clothes.

Claim 1:
A clothes lifting device for a washing machine having an imperforated inner drum, the clothes lifting device comprising:
a body being configured to be internally provided with an accommodating chamber;
water inlets (<NUM>) being arranged in the body and being configured to communicate with the accommodating chamber;
a centrifugal drainage assembly being arranged in the accommodating chamber, said centrifugal drainage assembly being configured in an initial state of the centrifugal drainage assembly to be closed, and to open for drainage under an action of centrifugal force; and
a filtering assembly being arranged on the water inlets (<NUM>) of the body for filtering water entering the accommodating chamber,
wherein the body comprises a lifting shell (<NUM>), which is internally provided with an open cavity; and a lifting base body (<NUM>), which is detachably installed at an open end of the open cavity of the lifting shell (<NUM>) to form the accommodating chamber with the lifting shell (<NUM>); the centrifugal drainage assembly is installed on the lifting base body (<NUM>); the water inlets (<NUM>) are arranged in the lifting shell (<NUM>), and the filtering assemblies are arranged on the water inlets (<NUM>) of the lifting shell (<NUM>)
wherein a plurality of spraying openings (<NUM>) are arranged in the lifting shell (<NUM>) and characterised in that
the water inlet filtering portion includes a base body water inlet filtering portion arranged on the lifting base body (<NUM>), and the base body water inlet filtering portion includes a plurality of base body water filtering holes (<NUM>) which are arranged in the lifting base body (<NUM>) and communicating with the accommodating chamber.