Patent Description:
As one of the mostly widely used household appliances in people's daily life, the existing washing machines help people to get rid of the trouble of washing laundry, and bring great convenience to people. However, washing machines also have certain shortcomings, for example, long time consumption and large water consumption. Along with development of the society, as an important natural resource, water resources have become increasingly important, and people's awareness of water saving has also increased, so it is particularly important how to realize a water-saving function of the washing machine. In addition, since an inner drum is not only configured to accommodate washing water, but also needs to rotate to beat and clean laundry inside the drum, therefore, how to design a dehydration structure and a drainage structure adapted to the above washing machine has become a problem to be urgently solved.

The <CIT> discloses an inner drum lifting rib and a cleaning -free washing machine, including a lifting rib body extending along a construction line at a side wall of an inner drum. Tthe body is a shell structure with a lower side being open and buckled to an inner side wall of the inner drum, the interior of the body is hollow to constitute an installation cavity for installation of a sealed valve. The lifting rib is provided with a water-passing structure which is configured to guide washing water inside the inner drum into an installation cavity. The periphery of the lifting rib body is in corresponding fit and contact with a side wall of the inner drum, at least one section of notch is arranged on the periphery, to allow washing water in the inner drum to flow into the installation cavity from the notch.

As to the cleaning-free washing machine proposed in the above application, a sealed valve is adopted for centrifugal drainage, and the problem of difficult drainage of a holeless drum washing machine is solved. However, since the hollow installation cavity inside the body of the lifting rib is connected with the interior of the inner drum, and washing water in the inner drum flows to the installation cavity from the notch, it is inevitable in the washing process that thread debris enters into the body of the lifting rib along with water flow and further enters into the sealed valve. Especially, thread debris is easily adhered and wound on counterweight blocks of the sealed valve or at the position where the counterweight block is hinged with an upper end of a valve plunger. So the adhered and wound thread debris is difficult to remove, and severely affects normal operation of the sealed valve. Therefore, the sealed valve cannot be closed properly, and such phenomenon as water dripping or water leakage happens, or the thread debris may interfere with normal opening of the centrifugal drainage mechanism, and influence normal drainage of the washing machine.

<CIT> discloses a laundry lifting device for installing in a drum of a washing machine, comprising a centrifugal drainage mechanism, wherein a valve body and a spring acting on the valve body are separately enclosed within a cavity in a shell of the laundry lifting device.

<CIT> discloses a laundry lifting device for installing in a drum of a washing machine, wherein a centrifugal drainage mechanism comprised within a shell of the laundry lifting device is surrounded by filter plates configured to collect impurities from drainage water.

<CIT> discloses a laundry lifting device for installing in a drum of a washing machine, comprising a mechanically actuated drainage mechanism that is separately enclosed within the laundry lifting device.

In view of this, the present invention is hereby proposed.

The technical problem to be solved in the present invention is to overcome shortcomings of the prior art, and the present application provides a laundry lifting device for a washing machine. Through installing a centrifugal drainage mechanism in an installation cavity which is independently enclosed in the lifting shell, it is effectively solved that thread debris and impurities in washing water of the existing washing machine enter into the centrifugal drainage mechanism to influence normal use of the centrifugal drainage mechanism.

The above described object of the invention is solved by the independent claim. The preferred embodiments are defined by the features of the dependent claims.

According to the invention a laundry lifting device for a washing machine is including:.

Further, a plurality of partition plates are fixedly arranged inside the lifting shell. The partition plates include partition baffle plates which separate the cavity of the lifting shell to form an installation cavity with an opening on a lower end, and an encapsulating baffle plate which are installed on the opening of the lower end to form the installation cavity being independent and enclosed, and a centrifugal component of the centrifugal drainage mechanism is arranged inside the installation cavity.

Further, the lifting shell includes a top wall and a circumferential side wall which is connected between the top wall and an inner wall of an inner drum of a washing machine. A distance between the encapsulating baffle plate and the top wall of the lifting shell is less than a distance between the top wall of the lifting shell and the inner wall of the inner drum, and there is a clearance space between a bottom surface of the encapsulating baffle plate and the inner wall of the inner drum.

The partition baffle plates include a first baffle plate and a second baffle plate which are oppositely arranged inside the lifting shell along a length direction of the lifting shell. The first baffle plate and the second baffle plate are respectively connected to the top wall and the circumferential side wall of the lifting shell, and a distance between the first baffle plate and the second baffle plate is less than a length of the lifting shell.

Further, the circumferential side wall includes a first side wall and a second side wall which are connected to two long sides of the top wall, a lower end of the first side wall and a lower end of the second side wall are at least partially provided with notches to form water inlets for allowing water flowing in, and the water inlets are communicated with a drainage outlet on the inner drum with a cavity inside the inner drum.

The encapsulating baffle plate is embedded into the notches of the first side wall and the second side wall. Lower surfaces of both sides of the encapsulating baffle plate corresponding to the water inlets are provided with special-shaped grid baffle ribs through which water flows to be drained at a bending angle.

Preferably, multiple special-shaped grid baffle ribs are arranged at intervals in two long sides of the encapsulating baffle plate.

Further, the special-shaped grid baffle ribs are arc-shaped grid ribs with curved bending angles. Alternatively, the special-shaped grid baffle ribs are folded grid ribs with straight lines included angles. Alternatively, the special-shaped grid baffle ribs include longitudinal ribs and a plurality of guiding ribs arranged on both sides of the longitudinal ribs, and the guiding ribs on two adjacent longitudinal ribs are arranged in a staggered manner.

Further, a diversion channel is formed in the clearance space between two adjacent special-shaped grid baffle ribs, so that the diversion channel forms an arc-shaped reversing diversion channel from an inlet to an outlet due to the bending angle. Ends of the special-shaped grid baffle ribs at the outlet bend or fold towards the drainage outlet, to guide the drainage water flow to converge towards the drainage outlet.

Preferably, each of the arc-shaped grid ribs has a plurality of curved bending angles, or each of the folded grid ribs has a plurality of straight line included angles. Alternatively, the arc-shaped grid ribs or the folded grid ribs are of a multi-layered structure in which an upper layer and a lower layer are arranged in a staggered manner.

Further, a second spacing space is formed by an outer surface of the partition plate, the inner wall of the lifting shell and the inner wall of the inner drum on the periphery of the drainage outlet. The second spacing space is respectively communicated with the interior of the inner drum and the drainage outlet formed on the inner drum, so water inside the inner drum flows through the second spacing space and is discharged via the drainage outlet.

Preferably, the second spacing space includes a drainage cavity arranged below the encapsulating baffle plate, and the installation cavity is arranged at a position close to an end part of the lifting shell. The second spacing space further includes a filtration cavity constituted by an outer side of the first baffle plate or the second baffle plate and the inner wall of the lifting shell.

Further, the centrifugal drainage mechanism further includes a valve plug component, and the valve plug component includes a valve plunger arranged coaxially with the drainage outlet and a valve plug connected to a lower end of the valve plunger. A valve plug through hole for allowing the valve plunger to pass through is formed at the position corresponding to the drainage outlet on the encapsulating baffle plate.

The centrifugal component includes a counterweight part and a connecting part arranged in the installation cavity, one end of the connecting part is fixedly connected with the counterweight part, the other end is hinged with an upper end of the valve plunger. A middle part is rotatably supported and fixed to form a lever structure, and a hinged point between the connecting part and the valve plunger is located within the installation cavity.

Preferably, an installation seat with a sleeve shape is installed on upper side of the encapsulating baffle plate, a through hole inside the installation seat is arranged coaxially with the valve plug through hole on the encapsulating baffle plate. The valve plunger is arranged within the installation seat, and a water sealed structure is arranged on the valve plunger and/or the installation seat.

Further, a bolt hole is formed on the encapsulating baffle plate, and a stud is injection molded on the inner wall of the lifting shell. A bolt is configured to pass through the bolt holes of the encapsulating baffle plate and be in threaded connection with the stud, to install the encapsulating baffle plates on the opening of the lower side of the partition baffle plates in a fastening manner.

Preferably, the encapsulating baffle plate is provided with a first flange/a second flange which is abutted against and in match with the first baffle plate/the second baffle plate.

Further, the centrifugal drainage mechanism includes a centrifugal component and a valve plug component connected with the centrifugal component.

The centrifugal component includes a counterweight part being capable of moving under a centrifugal force, and the movement of the counterweight part to drives the valve plug component to operate.

An installation cavity configured to install the centrifugal drainage mechanism is arranged inside the cavity of the lifting shell, and a buffer structure is arranged inside the installation cavity and/or on the counterweight part.

Further, the encapsulating baffle plate is installed at the position, close to the opening, inside the lifting shell, and an installation cavity configured to install the centrifugal component is separated out on an upper of the cavity of the lifting shell by the encapsulating baffle plate.

The centrifugal component is arranged inside the installation cavity arranged above the encapsulating baffle plate. The buffer structure includes a first pressed structure which is convex outwards on a position of the encapsulating baffle plate corresponding to the counterweight part.

Further, the first pressed structure includes circumferential walls and a bottom wall which protrude out of a lower surface of the encapsulating baffle plate. The shape and size of the bottom wall are matched with the shape and size of the cross section of the counterweight part.

Further, the centrifugal drainage mechanism further includes the valve plug component which is connected with the counterweight part through the lever structure. A buffer cone angle used for avoiding the lever structure is arranged in an extending manner on the side, close to the valve plug component, of the first pressed structure.

The counterweight part is driven move under the centrifugal force, to drive the valve plug component to operate to open the drainage outlet on the inner drum for drainage.

Further, the centrifugal drainage mechanism further includes the valve plug component which is connected with the counterweight part through the lever structure, and a cutting corner for buffering is arranged on an end of the side, far away from the valve plug component, of the counterweight part, to form the buffer structure.

Preferably, the counterweight part is in a shape of a quadrangular prism, and the cutting corner for buffering is a cutting corner structure on the lower end, far away from the valve plug component, of the counterweight part.

Further, the buffer structure further includes a first buffer pad arranged outside a bottom wall of the counterweight part.

Preferably, a cutting corner structure is arranged on the lower end, far away from the valve plug component, of the counterweight part. The bottom wall of the counterweight part includes a horizontal straight wall surface and an inclined wall surface formed by the cutting corner structure, and the first buffer pad is arranged on the position between the straight horizontal wall surface and the inclined wall surface in a coating manner.

Further, the buffer structure further includes a second buffer pad arranged on the bottom wall of the first pressed structure.

Preferably, a buffer pad installation position is arranged on the bottom wall of the first pressed structure corresponding to an intersected position between the cutting corner structure of the counterweight part and the bottom wall of the counterweight part. The second buffer pad is embedded in the buffer pad installation position, and an upper surface of the second buffer pad is slightly higher than or is flush with an upper surface of the bottom wall.

Further, the bottom wall of the first pressed structure is provided with one or more pressure relief holes which are arranged at intervals.

Preferably, a check valve is installed within the pressure relief hole.

Further, a second pressed structure which protrudes upwards is arranged on a top wall of the lifting shell corresponding to the counterweight part. The buffer structure further includes the second pressed structure which provides a buffer space in rising of the counterweight part.

Another object of the present invention is to provide a washing machine with any of the laundry lifting devices mentioned above. The washing machine includes:.

Adrainage outlet, arranged on a side wall of the inner drum, wherein, the laundry lifting device is installed on a drainage outlet of an inner wall of the inner drum, and the centrifugal drainage mechanism is configured to close/open the drainage outlet.

According to a second aspect of the present invention, another object of the present application is to further provide a centrifugal drainage mechanism. The centrifugal drainage mechanism includes a centrifugal component and a valve plug component, the centrifugal component includes a counterweight part and a connecting part, and the counterweight part includes a counterweight block shell and a counterweight block arranged inside the counterweight block shell.

One end of the connecting part is connected with the counterweight block shell, another end is rotatably connected with the valve plug component, and a middle part can be rotatably supported and fixed, to form a lever structure.

The counterweight block is driven to move under a centrifugal force, to drive the valve plug component to operate to open the drainage outlet on the inner drum for drainage.

Further, one end of the connecting part connected with the valve plug component is gradually enlarged towards the other end connected with the counterweight block shell.

Further, the connecting part is a plate structure with a cross section of a triangular shape, and one side edge of the connecting part is fixedly connected to a side wall, close to the valve plug component, of the counterweight block shell.

Preferably, a longitudinal section of the connecting part is of a triangular shape.

Further, a reinforcing structure configured to improving strength is arranged at the position at which the connecting part is connected with the counterweight block shell, and the reinforcing structure is a reinforcing rib with plate shape which is connected with the connecting part and the counterweight block shell.

Preferably, at least two reinforcing ribs with plate shape are provided, and the reinforcing ribs with plate shape are arranged on left and right sides of the connecting part.

Further, the connecting part is provided with an extending connecting rib which is arranged in a protruding manner. The extending connecting rib is formed by extending an upper edge of the connecting part towards the counterweight part.

The extending connecting rib has an extending length. The lower side of the extending connecting rib is fixedly connected with an upper side wall of the counterweight block shell.

Further, the counterweight block shell and the connecting part are integrally molded through injection molding.

Further, the counterweight block is made of metal materials, and the counterweight block shell is made of non-metallic materials with corrosion-resistant.

Preferably, the counterweight block shell is made of plastic materials.

Further, along a length direction of the counterweight block, the counterweight block shell includes circumferential side walls enclosing a structure with the openings on two ends. A first end side wall and a second end side wall which are arranged on two ends of the structure, and one end of the connecting part is fixedly connected onto the first end side wall/the second end side wall;.

The circumferential side walls include a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence from end to end. The connecting positions among the first side wall, the second side wall, the third side wall and the fourth side wall are in smooth and transitional connection.

Further, there is a clearance between the counterweight block shell and the counterweight block, and the clearance is filled with sealing medium.

Preferably, the sealing medium is colloidal, the clearance between the counterweight block and the counterweight block shell is filled with glue to bond the counterweight block and the counterweight block shell into a whole.

Another object of the present invention is to provide a washing machine with any of the centrifugal drainage mechanisms mentioned above. The washing machine includes:.

After the above technical solutions are employed, the present invention has the following beneficial effects as compared with the prior art.

In order to make objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description is given below on the technical solutions in the embodiments in combination with accompanying drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention, rather than limiting the scope of the present invention.

In the description of the present invention, it should be noted that, the orientation or positional relationship indicated by such terms as "up", "down", "front", "rear", "left", "right", "vertical", "inner" and "outer" is the orientation or positional relationship based on the accompanying drawings. Such terms are merely for the convenience of description of the present invention and simplified description, rather than indicating or implying that the device or element referred to must be located in a certain orientation or must be constructed or operated in a certain orientation, therefore, the terms cannot be understood as a limitation to the present invention.

In the description of the present invention, it should be noted that, unless otherwise stipulated and defined definitely, such terms as "installed", "connected" and "in connection" should be understood in their broad sense, e.g., the connection can be a fixed connection, a detachable connection or an integral connection; can be mechanical connection or electrical connection; and can be direct connection or can be indirect connection through an intermediate. For those skilled in the art, specific meanings of the above terms in the present invention can be understood according to specific conditions.

The present invention is further described in details below in combination with embodiments.

The present embodiment provides a laundry lifting device for a washing machine, which mainly aims at solving the problem that the centrifugal drainage mechanism cannot be closed properly or cannot discharge water normally since the components of the centrifugal drainage mechanism installed in the existing laundry lifting device are easily adhered and wound with thread debris.

As shown in <FIG>, the present embodiment provides a laundry lifting device for a washing machine, including:.

As shown in <FIG>, <FIG> and <FIG>, the cavity of the lifting shell <NUM> is separated by an independently enclosed installation cavity <NUM>, and the centrifugal drainage mechanism <NUM> is at least partially installed in the installation cavity <NUM>.

The lifting shell <NUM> is provided with a water inlet <NUM> which allows washing water in the inner drum <NUM> to flow into the lifting shell <NUM>, therefore, the cavity of the lifting shell <NUM> is communicated with the inside of the inner drum <NUM>, while the centrifugal drainage mechanism <NUM> is directly installed inside the cavity of the lifting shell <NUM>. It is unavoidable that thread debris enters into the lifting shell <NUM> along with water flow and further enters into the centrifugal drainage mechanism <NUM> in the washing process.

In the present embodiment, the centrifugal drainage mechanism <NUM> is installed in an installation cavity <NUM> independently enclosed which is additionally arranged in the cavity of the lifting shell <NUM>. The installation cavity <NUM> can play a role of blocking thread debris from entering into the centrifugal drainage mechanism <NUM> for the second time. Thread debris inside the inner drum <NUM> does not enter into the installation cavity <NUM> along with water flow, such that the centrifugal drainage mechanism <NUM> is in an environment free of thread debris, thereby fundamentally avoiding possibility of adhering and winding of thread debris, and effectively ensuring reliability of the centrifugal drainage mechanism <NUM> during operation.

Further, a plurality of partition plates are fixedly arranged inside the lifting shell <NUM>, and an independently enclosed installation cavity <NUM> is formed in the lifting shell <NUM> by the partition plates. The partition plates can be injection molded with the lifting shell <NUM>, to form the independently enclosed installation cavity <NUM>, Alternatively, the partition plates can be integrated with the lifting shell <NUM> through a connecting piece, to form the independently enclosed installation cavity <NUM>.

Specifically, the partition plates include partition baffle plates and an encapsulating baffle plate <NUM>, the partition baffle plates separate the cavity of the lifting shell <NUM> to form an installation cavity <NUM> with an opening downward, and the encapsulating baffle plate <NUM> are encapsulated on the opening of a lower end of the installation cavity <NUM> to form an independently enclosed installation cavity <NUM>. A centrifugal component <NUM> of the centrifugal drainage mechanism <NUM> is arranged inside the installation cavity <NUM>.

Through the arrangement of the partition baffle plates and the encapsulating baffle plate <NUM> in the lifting shell <NUM>, an independently enclosed installation cavity <NUM> is separated from the cavity of the lifting shell <NUM>. The centrifugal component <NUM> of the centrifugal drainage mechanism <NUM> is arranged in the installation cavity <NUM>. The partition baffle plates and the encapsulating baffle plate <NUM> play a role of blocking impurities and thread debris from entering the installation cavity <NUM> along with washing water for the second time.

In the present embodiment, the encapsulating baffle plate <NUM> and the partition baffle plates can be impermeable plate-shaped structures, such that the installation cavity <NUM> can be a sealed cavity. Water inside the inner drum <NUM> does not enter the installation cavity <NUM>, thereby further avoiding thread debris and other impurities from entering the installation cavity <NUM>.

Alternatively, in another solution, the encapsulating baffle plate <NUM> and the partition baffle plates can also be plate-shaped structures with a plurality of filtration holes. The encapsulating baffle plate <NUM> and the partition baffle plates play a role of filtering thread debris in the washing water for the second time, and water inside the inner drum <NUM> can enter into the installation cavity <NUM> via the filtration holes, however, thread debris is blocked outside and does not enter into the installation cavity <NUM>.

Preferably, in the present embodiment, the encapsulating baffle plate <NUM> and the partition baffle plates are impermeable plate-shaped structures, and can effectively avoid washing water from entering into the installation cavity <NUM> while playing a role of blocking thread debris from entering into the installation cavity <NUM>. Thereby reliability of the centrifugal drainage mechanism <NUM> is further ensured during operation.

Further, the lifting shell <NUM> includes a top wall <NUM> and a circumferential side wall <NUM> which is connected between the top wall <NUM> and the inner wall of an inner drum <NUM> of a washing machine. The distance between the encapsulating baffle plate <NUM> and the top wall <NUM> of the lifting shell <NUM> is less than the distance between the top wall <NUM> of the lifting shell <NUM> and the inner wall of the inner drum <NUM>.

There is a clearance space between the bottom wall of the encapsulating baffle plate <NUM> and the inner wall of the inner drum <NUM>, and the clearance space formed between the bottom wall surface of the encapsulating baffle plate <NUM> and the inner wall surface of the inner drum <NUM> is a drainage cavity <NUM> for discharging washing water. The drainage cavity <NUM> is respectively communicated with the interior of the inner drum <NUM> and the drainage outlet <NUM> on the inner drum <NUM>, and washing water inside the inner drum <NUM> can enter into the drainage outlet <NUM> on the inner drum <NUM> via the drainage cavity <NUM>, and is then discharged from the drainage outlet <NUM>.

As shown in <FIG>, <FIG> and <FIG>, the partition baffle plates include a first baffle plate <NUM> and a second baffle plate <NUM> which are arranged inside the lifting shell <NUM> oppositely along a length direction of the lifting shell <NUM>. The first baffle plate <NUM> and the second baffle plate <NUM> are respectively connected to the top wall <NUM> and the circumferential side wall <NUM> of the lifting shell <NUM>, and the first baffle plate <NUM> and the second baffle plate <NUM> are injection molded with the lifting shell <NUM>.

The relative distance between the first baffle plate <NUM> and the second baffle plate <NUM> is less than the length of the lifting shell <NUM>. Along the length direction of the lifting shell <NUM>, the length of the installation cavity <NUM> is less than the length of the lifting shell <NUM>.

Preferably, the installation cavity <NUM> is arranged close to one side of the lifting shell <NUM>, of which a larger installation space can be provided for installing a filtration part inside the lifting shell <NUM> in compare with arrangement of the installation cavity <NUM> in the middle of the lifting shell <NUM>.

Further, as shown in <FIG>, <FIG> and <FIG>, the circumferential side wall <NUM> includes a first side wall and a second side wall which are connected to two long sides of the top wall <NUM>. The lower edge of the first side wall and the lower edge of the second side wall are at least partially provided with the notches to form a water inlet <NUM> for water inlet. The water inlet <NUM> is communicated with the drainage outlet <NUM> on the inner drum <NUM> with the inside of the inner drum <NUM>.

The notches are arranged at the lower edge of the first side wall and the lower edge of the second side wall, the notches have a length extending in an axial direction, and the notch is strip-shaped. The encapsulating baffle plates <NUM> are embedded into the notch of the first side wall and the notch of the second side wall.

The upper edge of the first baffle plate <NUM> and the upper edge of the second baffle plate <NUM> are connected onto the top wall <NUM> of the lifting shell <NUM>, and the two side edges are respectively connected to the first side wall and the second side wall of the lifting shell <NUM>.

Preferably, a third baffle plate <NUM> is arranged in the lifting shell <NUM>. The first baffle plate <NUM> and the third baffle plate <NUM> are arranged at the ends close to two sides of the lifting shell <NUM>. Three spaces are formed by the first baffle plate <NUM>/the second baffle plate <NUM> in the cavity of the lifting shell <NUM>, and the spaces arranged outsides of the first baffle plate <NUM>/the second baffle plate <NUM> are used for independently setting an installation structure for installing the lifting shell <NUM>.

The lower edge of the first side wall and the lower edge of the second side wall of the lifting shell <NUM> between the first baffle plate <NUM> and the second baffle plate <NUM> are provided with the notches, and the encapsulating baffle plate <NUM> is installed in the installation position formed by the first baffle plate <NUM>, the second baffle plate <NUM>, the first side wall and the second side wall. The second baffle plate <NUM> is arranged inside the lifting shell <NUM> and between the first baffle plate <NUM> and the third baffle plate <NUM>. The lower edge of the second baffle plate <NUM> is extended onto the upper wall surface of the encapsulating baffle plate <NUM>. Taking the installation cavity <NUM> being arranged inside the lifting shell <NUM> close to an opening of the inner drum <NUM> as an example, the first baffle plate <NUM> is arranged close to the opening of the inner drum, and the inner wall surfaces of the second baffle plate <NUM>, the first baffle plate <NUM> and the encapsulating baffle plate <NUM> form the installation cavity <NUM>.

In an implementation, as shown in <FIG>, as to the laundry lifting device provided in the present embodiment, special-shaped grid baffle ribs <NUM> is arranged below two sides of the encapsulating baffle plates <NUM> corresponding to the water inlet <NUM> to make washing water flow at a certain bending angle. When washing water flows through the water inlet <NUM>, thread debris can be blocked and adhered onto the special-shaped grid baffle ribs <NUM> and does not enter into the drainage cavity <NUM>.

Preferably, a plurality of special-shaped grid baffle ribs <NUM> are provided and are arranged at intervals along two long sides of the encapsulating baffle plates <NUM>. Through the plurality of special-shaped grid baffle ribs <NUM> arranged at intervals on the two long sides of the encapsulating baffle plates <NUM>, thread debris can be effectively blocked from entering into the drainage cavity <NUM> and blocking the drainage outlet <NUM>. Thereby it is avoided to affect normal drainage because thread debris is adhered at the centrifugal drainage mechanism <NUM> or blocked at the drainage outlet <NUM>.

Further, the special-shaped grid baffle ribs <NUM> are arc-shaped grid ribs with curved bending angles. For example, the special-shaped grid baffle ribs <NUM> can have a shape of a forward "S" or a reverse "S". Alternatively, the special-shaped grid baffle ribs <NUM> may be folded grid ribs with straight line included angle, for example, the special-shaped grid baffle ribs <NUM> may be in a shape of "<" or ">". When washing water flows through the special-shaped grid baffle ribs <NUM>, thread debris is blocked at the curved bending angle or the straight line included angle of the special-shaped grid baffle ribs <NUM>, and does not enter into the drainage cavity503.

Further, a diversion channel is formed in the clearance space between two adjacent special-shaped grid baffle ribs <NUM>. Through the arrangement of bending angle, the diversion channel forms an arc-shaped reversing diversion channel from the inlet to the outlet. Thereby on the one hand, thread debris is blocked and filtered, and on the other hand, the flow velocity of water flow is increased by reversing direction.

Preferably, the outlet ends of the special-shaped grid baffle ribs <NUM> bend or fold towards the direction of the drainage outlet <NUM>, to guide the water flow to converge towards the direction of the drainage outlet <NUM>.

For example, the special-shaped grid baffle ribs <NUM> are arc-shaped grid ribs in the shape of a forward "S" or a reverse "S". The arc-shaped grid ribs arranged the left side and rear side of the drainage outlet <NUM> are in a shape of a forward "S", the arc-shaped grid ribs arranged the right side and rear side of the drainage outlet <NUM> are in a shape of a reverse "S", the arc-shaped grid ribs arranged the left side and front side of the above drainage outlet <NUM> are in a shape of a reverse "S", and the arc-shaped grid ribs arranged the right side and front side of the drainage outlet <NUM> are in a shape of a forward "S".

For another example, the special-shaped grid baffle ribs <NUM> are arc-shaped grid ribs in the shape of "<" or ">". The folded grid ribs arranged on the left side and rear side of the drainage outlet <NUM> are in a shape of a forward "<", the arc-shaped grid ribs arranged on the right side and rear side of the drainage outlet <NUM> are in a shape of ">", the arc-shaped grid ribs arranged on the left side and front side of the drainage outlet <NUM> are in a shape of a reverse "<", and the arc-shaped grid ribs arranged on the right side and front side of the drainage outlet <NUM> are in a shape of a forward ">".

Through the above design, the clearance space between the two special-shaped grid baffle ribs <NUM> forms a diversion channel with an outlet end facing towards the direction of the drainage outlet401, thereby facilitating convergence of water flow.

Preferably, the arc-shaped grid ribs/the folded grid ribs are respectively provided with a plurality of curved bending angles/straight line included angles. Through the plurality of set bending angles or straight line included angles, the water flow can be bent for multiple times, and the effect of blocking thread debris is better.

Alternatively, the arc-shaped grid ribs/the folded grid ribs are multi-layered structures in which an upper layer and a lower layer are arranged in a staggered manner. By setting a plurality of layers of arc-shaped grid ribs/folded grid ribs, the water flow can be bent for multiple times and the effect of blocking thread debris is better.

Moreover, in the above solution, the arc-shaped grid ribs/the folded grid ribs are arranged as the upper layer and the lower layer which are arranged in a staggered manner. The arc-shaped grid ribs/folded grid ribs in the upper layer are arranged between two grid ribs in the lower layer. If thread debris passes through the diversion channel between two grid ribs in the lower layer, grid ribs in the upper layer can block thread debris from passing through for the second time, thereby further avoiding thread debris from entering into the drainage cavity <NUM> of the lifting shell <NUM>.

In another implementation, the special-shaped grid baffle ribs <NUM> include longitudinal ribs and a plurality of guiding ribs arranged at two sides of the longitudinal ribs. The guiding ribs on two adjacent longitudinal ribs are arranged in a staggered manner. Through a plurality of guiding ribs arranged at two sides of the longitudinal ribs, a curved diversion channel is formed, to play a role of effectively blocking thread debris.

The guiding ribs can be horizontal ribs which can be arranged horizontally. Preferably, the guiding ribs are set to be inclined, and the guiding ribs are inclined ribs which are inclined towards the direction of the outlet of the diversion channel, to guide water flow.

More preferably, the guiding ribs arranged at the outlet end of the diversion channel are inclined towards the drainage outlet <NUM> of the inner drum <NUM>, facilitating gathering water flow towards the drainage outlet <NUM> and discharging out.

As to the laundry lifting device for a washing machine provided in the present embodiment, the special-shaped grid baffle ribs <NUM> are arranged at the water inlet <NUM> of the lifting shell <NUM> and can make the washing water flow through at a certain bending angle, so thread debris can be effectively blocked from entering into the drainage cavity <NUM> and blocking the drainage outlet <NUM>. Thereby normal drainage is not affected because thread debris is avoided being adhered at the centrifugal drainage mechanism <NUM> or blocked at the drainage outlet <NUM>.

Further, a first spacing space formed by the encapsulating baffle plate <NUM>, the partition baffle plates and the inner wall of the lifting shell <NUM> is the installation cavity <NUM>. A second spacing space is formed by the outer walls of the partition plates and the inner wall of the lifting shell <NUM> and the inner wall of the inner drum <NUM> on the periphery of the drainage outlet <NUM>. The second spacing space is respectively communicated with the interior of the inner drum <NUM> and the drainage outlet <NUM> formed on the inner drum <NUM>, and water inside the inner drum <NUM> flows through the second spacing space and is discharged via the drainage outlet <NUM>.

Preferably, the second spacing space includes a drainage cavity <NUM> arranged below the encapsulating baffle plate <NUM>. The installation cavity <NUM> is arranged close to the end of the lifting shell <NUM>. The second spacing space further includes a filtration cavity <NUM> constituted by an outer side of the first baffle plate <NUM>/the second baffle plate <NUM> and the inner wall of the lifting shell <NUM>, and the filtration cavity <NUM> is internally installed with a filtration structure.

As shown in <FIG>, <FIG> and <FIG>, in the present embodiment, the filtration cavity <NUM> is constituted by a space between the right side surface of the second baffle plate <NUM> and the inner wall surface of the lifting shell <NUM>. A plurality of through holes are formed on the top wall <NUM> or the circumferential side wall <NUM> of the lifting shell <NUM> corresponding to the filtration cavity <NUM>, and the through holes are communicated with the filtration cavity <NUM>. Preferably, the through holes are formed on the top wall <NUM> of the lifting shell <NUM>. The filtration cavity <NUM> exchanges the water flow with the inner drum <NUM> through the through holes formed on the lifting shell <NUM>, and the drainage cavity <NUM> guides the water inside the inner drum <NUM> towards the drainage outlet <NUM> formed on the inner drum <NUM>.

Further, as shown in <FIG> and <FIG>, the centrifugal drainage mechanism <NUM> further includes a valve plug component <NUM>, and the valve plug component <NUM> includes a valve plunger <NUM> arranged coaxially with the drainage outlet <NUM> and a valve plug <NUM> connected to a lower end of the valve plunger <NUM>. Under a natural state, the valve plug <NUM> blocks the drainage outlet <NUM>, to ensure the sealing performance of the inner drum <NUM>. A valve plug through hole which allows the valve plunger <NUM> to pass through is formed at the position corresponding to the drainage outlet <NUM> on the encapsulating baffle plate <NUM>.

The centrifugal component <NUM> includes a counterweight part <NUM> and a connecting part <NUM> arranged in the installation cavity <NUM>. One end of the connecting part <NUM> is fixedly connected with the counterweight part <NUM>, the other end is hinged with an upper end of the valve plunger <NUM>, and the middle part of the connecting part <NUM> is rotatably supported and fixed, to form a lever structure.

A hinged point between the connecting part <NUM> and the valve plunger <NUM> is located within the installation cavity <NUM>. The counterweight part <NUM> moves downwards under the effect of a centrifugal force, and drives the valve plunger <NUM> to move upwards by utilizing a lever principle. Further the valve plug <NUM> opens the drainage outlet <NUM> on the inner drum <NUM> for drainage.

The counterweight part <NUM> and the connecting part <NUM> of the centrifugal component <NUM> and a hinged point between the connecting part <NUM> and the valve plunger <NUM> are all located inside the installation cavity <NUM>, thereby effectively avoiding thread debris from adhering and winding at the counterweight part <NUM> or the hinged position between the connecting part <NUM> and the valve plunger <NUM> to influence normal operation of the centrifugal drainage mechanism <NUM>.

Preferably, an installation seat <NUM> with a sleeve shape is installed on upper side of the encapsulating baffle plate <NUM>. The through hole on the inner side of the installation seat <NUM> is arranged coaxially with the through hole of the valve plug on the encapsulating baffle plate <NUM>, the valve plunger <NUM> is arranged within the installation seat <NUM> in a manner of moving up and down. A water sealed structure is arranged on the valve plunger <NUM> and/or the installation seat <NUM>. Through the arrangement of the water sealed structure, thread debris can be further prevented from entering into the installation cavity <NUM> along with washing water, such that the centrifugal drainage mechanism <NUM> is in an environment free of thread debris, and the possibility of adhering and winding of thread debris is reduced.

As shown in <FIG> and <FIG>, the middle part of the connecting part <NUM> is provided with a rotating shaft hole or a rotating shaft. A rotating shaft support <NUM> is arranged on a side, close to the counterweight part <NUM>, of the installation seat <NUM>, the rotating shaft support <NUM> supports and matches with the rotating shaft hole of the connecting part <NUM> in a rotating manner. When the counterweight part <NUM> rotates up and down around a pivot of the rotating shaft support <NUM> and the connecting part <NUM> under a centrifugal force, the valve plug <NUM> is driven to move up and down in the second spacing space between lower sidewall of the encapsulating baffle plate <NUM> and the inner wall of the inner drum <NUM>, to open or close the drainage outlet <NUM>.

Further, as shown in <FIG> and <FIG>, the encapsulating baffle plate <NUM> are formed with bolt holes, the inner wall of the lifting shell <NUM> is injection molded with studs <NUM>. The bolt <NUM> passes through the bolt hole to be in threaded connection with the stud <NUM>, to install the encapsulating baffle plates <NUM> on the openings of the lower sides of the partition baffle plates in a fastening manner.

Specifically, four bolt holes are respectively arranged at four corners of the encapsulating baffle plate <NUM>, the inner wall of the lifting shell <NUM> is correspondingly injection molded with four studs <NUM> which are arranged to extend downwards, and the encapsulating baffle plate <NUM> is installed at the lower end of the lifting shell <NUM> through the bolt <NUM> in a fastening manner.

Preferably, as shown in <FIG> and <FIG>, the encapsulating baffle plate <NUM> is respectively provided with a first flange <NUM>/a second flange <NUM> which is abutted against and limits with the position of the first baffle plate <NUM>/the second baffle plate <NUM>. The side of the encapsulating baffle plate <NUM> close to the first baffle plate <NUM> extends downwards to form the first flange <NUM>, an outer wall surface of the first flange <NUM> is closely abutted against an inner wall surface of the first baffle plate <NUM>. The second flange <NUM> extending upwards is arranged at the position on the encapsulating baffle plate <NUM> corresponding to the second baffle plate <NUM>, and the second flange <NUM> coats the lower edge of the second baffle plate <NUM> inside the second flange <NUM>. The outer wall surface of the second baffle plate <NUM> is closely abutted against the inner wall surface of the second flange <NUM>.

Through the arrangement of the first flange <NUM> and the second flange <NUM>, the encapsulating baffle plate <NUM> is in close match with the first baffle plate <NUM> and the second baffle plate <NUM> via a mode in which one surface is abutted against another surface, so a sealing effect at the boundary position is ensured. Thereby it is avoided that thread debris enters into the installation cavity <NUM> together with washing water through the position where the first baffle plate <NUM> and the second baffle plate <NUM> are connected with the encapsulating baffle plate <NUM>.

The present embodiment further provides a washing machine with the above laundry lifting device, including:.

The present embodiment is an improved solution made to the centrifugal drainage mechanism <NUM> on the basis of Embodiment <NUM>, which mainly solves the problems that the existing counterweight part <NUM> is easily rusted and corroded and reliability between the counterweight part <NUM> and the connecting part <NUM> is poor.

As shown in <FIG>, the centrifugal drainage mechanism <NUM> provided in the present embodiment includes a centrifugal component <NUM> and a valve plug component <NUM>. The centrifugal component <NUM> includes a counterweight part <NUM> and a connecting part <NUM>, and the counterweight part <NUM> includes a counterweight block shell <NUM> and a counterweight block <NUM> arranged inside the counterweight block shell <NUM>.

Through a counterweight block shell <NUM> additionally arranged outside the counterweight block <NUM>, the counterweight block shell <NUM> coats the counterweight block <NUM> inside, thereby it is effectively avoided that the counterweight block <NUM> is easily rusted and corroded due to direct contact with washing water, and the phenomenon that normal operation of the centrifugal drainage mechanism <NUM> is not influenced. The counterweight block shell <NUM> can also play a role of protection, to avoid the counterweight block <NUM> from being damaged during centrifugal movement.

As shown in <FIG>, <FIG> and <FIG>, one end of the connecting part <NUM> of the centrifugal drainage mechanism <NUM> is connected with the counterweight block shell <NUM>, the other end is rotatably connected with the valve plug component <NUM>, the middle part of the connecting part <NUM> is rotatably supported and fixed, to form a lever structure. The connecting part <NUM> is fixedly connected with the counterweight block shell <NUM>, which is easier to process and shape in compare with the case in which the connecting part <NUM> is directly connected with the counterweight block <NUM>,. The counterweight block <NUM> moves under the effect of a centrifugal force, to drive the valve plug component <NUM> to be operated to open the drainage outlet <NUM> on the inner drum <NUM> for drainage.

Further, as shown in <FIG> and <FIG>, the connecting part <NUM> is gradually expanded from one end connected with the valve plug component <NUM> to the other end connected with the counterweight block shell <NUM>. Through the arrangement of expansion of the valve plug component <NUM> from one end connected with the connecting part <NUM> to the other end connected with the counterweight block shell <NUM>, the connecting area between the connecting part <NUM> and the counterweight block shell <NUM> is increased, such that the strength between the connecting part <NUM> and the counterweight block shell <NUM> is higher and the stability is better.

Further, in the present embodiment, the connecting part <NUM> is a plate-shaped structure with a triangular section. One side edge of the connecting part <NUM> is fixedly connected to the side wall, close to the valve plug component <NUM>, of the counterweight block shell <NUM>.

The connecting part <NUM> can be in the shape of a right angled triangle. One right-angle side of the connecting part <NUM> is fixedly connected to an outer wall surface of the counterweight block shell <NUM>. The width of the connecting part <NUM> is gradually increased from one end connected with the valve plug component <NUM> to the other end connected with the counterweight block shell <NUM>. The stability of the triangle is higher, and the connecting area between the connecting part <NUM> and the counterweight block shell <NUM> is larger, and the stability is higher.

Preferably, the longitudinal section of the connecting part <NUM> is of a triangular shape, and the connecting part <NUM> is a triangular plate-shaped structure in longitudinal direction, Compared with the connecting part <NUM> with triangular plate-shaped structure in horizontal direction, the activity space needing to be reserved is the minimum for the connecting part <NUM> rotating up and down along with the counterweight part <NUM>, thereby improving the space utilization rate of the lifting shell <NUM>.

Further, in combination with what is shown in <FIG> and <FIG>, a reinforcing configured to improve strength are arranged at the position where the connecting part <NUM> is connected with the counterweight block shell <NUM>, and the reinforcing structure is a reinforcing rib <NUM> with a plate shape and is connected with the connecting part <NUM> and the counterweight block shell <NUM>.

Preferably, at least two reinforcing ribs <NUM> with a plate shape are provided, and are arranged on the left and right sides of the connecting part <NUM>. The reinforcing rib <NUM> with a plate shape is of a triangular shape, and adjacent sides are respectively connected to the connecting part <NUM> and the counterweight block shell <NUM>.

Through arrangement of the reinforcing ribs <NUM> with a plate shape at two sides of the connecting part <NUM>, strength at the connecting point between the connecting part <NUM> and the counterweight block shell <NUM> is further strengthened, thereby effectively avoiding fracture at the connecting position between the connecting part <NUM> and the counterweight part <NUM>.

Further, as shown in <FIG>, the connecting part <NUM> is provided with an extending connecting rib <NUM> which is arranged in a protruding manner, and the extending connecting rib <NUM> is formed by extending an upper edge of the connecting part <NUM> towards the counterweight part <NUM>. The extending connecting rib <NUM> has a certain length, and a lower side of the extending connecting rib <NUM> is fixedly connected with an upper side wall of the counterweight block shell <NUM>.

Due to the fixed connection of the upper side of the counterweight block shell <NUM> with the extending connecting rib <NUM>, the counterweight block shell <NUM> is fixedly connected via the upper side and right side of the counterweight block shell <NUM>, thereby further enhancing reliability of connection between the connecting part <NUM> and the counterweight block shell <NUM>.

Further, in the present embodiment, the counterweight block shell <NUM> is fixedly connected with the connecting part <NUM> through melting or bonding. Preferably, the counterweight block shell <NUM> is injection molded with the connecting part <NUM>, and the counterweight block shell <NUM> and the connecting part <NUM> are integrated injection molded parts.

Further, the counterweight block shell <NUM> is provided with an accommodation cavity which is enclosed and configured to accommodate the counterweight block <NUM>. The counterweight block <NUM> is made of metal materials, the counterweight block shell <NUM> is made of corrosion-resistant non-metal materials, and the counterweight block shell <NUM> cannot be rusted and corroded.

Preferably, the counterweight block shell <NUM> is made of high-hardness plastic material, and has not only good corrosion resistance but also strong weight, thereby reducing the load on the inner drum <NUM>.

Further, along a length direction of the counterweight block <NUM>, the counterweight block shell <NUM> includes side walls forming a structure with two ends being open, and a first end side wall and a second end side wall which are arranged on two ends of the side walls. One end of the connecting part <NUM> is fixedly connected to the first end side wall/the second end side wall.

The side walls of the counterweight block shell <NUM> include a first side wall, a second side wall, a third side wall and a fourth side wall which are connected end to end, and the connecting positions between the first side wall, the second side wall, the third side wall and the fourth side wall are in smooth and transitional connection. Adjacent side walls are in smooth and transitional connection, not right-angled connection, so it is not easily scratched with other parts.

Further, in an implementation, there is a clearance between the counterweight block shell <NUM> and the outer wall of the counterweight block <NUM>, and the clearance is internally filled with sealing medium. Through filling the sealing medium into the clearance between the counterweight block shell <NUM> and the outer wall of the counterweight block <NUM>, the probability that washing water enters into the accommodation cavity of the counterweight block shell <NUM> and contacts with the counterweight block <NUM> is further reduced.

Preferably, the sealing medium is colloidal, and the clearance between the counterweight block <NUM> and the counterweight block shell <NUM> is filled with glue to bond the counterweight block <NUM> and the counterweight block shell <NUM> into a whole. The glue as the sealing medium plays a role of sealing, and fixed connection. The counterweight block <NUM> is bonded with the counterweight block shell <NUM>, and the counterweight block <NUM> is prevented from shaking up and down in the counterweight block shell <NUM>.

The present embodiment further provides a washing machine with the above centrifugal drainage mechanisms <NUM>, including:.

The present embodiment provides a laundry lifting device for a washing machine based on Embodiment <NUM> and/or Embodiment <NUM>, which mainly solves the problem of noise generated when the counterweight part <NUM> of the centrifugal drainage mechanism <NUM> easily hits the inner drum <NUM> or the side wall of the installation cavity <NUM> during movement.

In the laundry lifting device for a washing machine provided in the present invention, through the arrangement of a buffer structure inside the installation cavity <NUM> in the lifting shell <NUM> and/or arranged on the counterweight part <NUM>, it is effectively avoided to generate noise caused by the counterweight part <NUM> hitting the inner drum <NUM> or the side wall of the installation cavity <NUM> during the movement of the counterweight part <NUM>, user experience is not influenced. The buffer structure can also protect the counterweight part <NUM>, and the service life of the centrifugal drainage mechanism <NUM> is prolonged.

Further, an encapsulating baffle plate <NUM> is installed at the position close to the opening inside the lifting shell <NUM>. An installation cavity <NUM> configured to install the centrifugal component <NUM> is separated off by the encapsulating baffle plate <NUM> and arranged on the upper part of the cavity of the lifting shell <NUM>. The configuration, the arrangement manner and effect of the installation cavity <NUM> and the encapsulating baffle plate <NUM> are the same as those in Embodiment <NUM>, and should not be repeated redundantly herein.

As shown in <FIG>, the centrifugal component <NUM> is arranged inside the installation cavity <NUM> above the encapsulating baffle plate <NUM>. The buffer structure includes a first pressed structure <NUM> which is concave outwards corresponding to the position of the counterweight part <NUM> on the encapsulating baffle plate <NUM>. The first pressed structure <NUM>, which is concave downwards and formed on the encapsulating baffle plate <NUM>, provides a larger buffer space for downward movement of the counterweight part <NUM>, thereby avoiding the greater noise caused by the counterweight part <NUM> hitting the encapsulating baffle plate <NUM> due to the limited activity space of the counterweight part <NUM>.

Further, the first pressed structure <NUM> includes a circumferential wall and a bottom wall <NUM> which protrude out of the lower surface of the encapsulating baffle plate <NUM>. The shape and size of the bottom wall <NUM> are adapted to the shape and size of the cross section of the counterweight part <NUM>. The first pressed structure <NUM> provides a sufficient buffer space for the entire counterweight part <NUM> t, thereby avoiding noise generated by hitting the encapsulating baffle plate <NUM>, while the counterweight part <NUM> is protected.

Further, the centrifugal drainage mechanism <NUM> further includes a valve plug component <NUM> connected with the counterweight part <NUM> through a lever structure, the counterweight part <NUM> moves under the effect of a centrifugal force to drive the valve plug component <NUM> to operate to open the drainage outlet <NUM> on the inner drum <NUM> for drainage. The lever structure is as the connecting part <NUM> described in Embodiment <NUM> or Embodiment <NUM>, and the specific structure and effect are not repeated redundantly herein.

As shown in <FIG>, a buffer cone angle <NUM> for avoiding the lever structure is arranged in an extending manner on the side, close to the valve plug component <NUM>, of the first pressed structure <NUM>. The cross section of the first pressed structure <NUM> is of a shape similar to a pencil stub. A top angle structure which is gradually inclined towards the valve plug component <NUM> is arranged at the position of the first pressed structure <NUM> corresponding to the lever structure, to form the buffer cone angle <NUM>. The lever structure can be avoided through the arrangement of the buffer cone angle <NUM>, so the first pressed structure <NUM> provides a greater buffer space for the counterweight part <NUM>.

Further, as shown in <FIG>, <FIG>, <FIG>, the buffer structure further includes a buffer unfilled angle arranged on the side, far away from the valve plug component <NUM>, of the counterweight part <NUM>. The end, far away from the valve plug component <NUM>, of the counterweight part <NUM> has a notch for providing a larger buffer space for the downfall of the counterweight part <NUM>. This ensures a sufficient activity space for the centrifugal drainage mechanism <NUM>, to open or close the drainage outlet <NUM>.

Preferably, in the present embodiment, as shown in <FIG>, the counterweight part <NUM> is in a shape of a quadrangular prism, and the buffer unfilled corner is a structure by cutting corner <NUM> below the end, far away from the valve plug component <NUM>, of the counterweight part <NUM>, and the structure by cutting corner <NUM> has an inclined wall surface which extends from the bottom wall of the counterweight part <NUM> to the left side end wall of the counterweight part <NUM>.

Further, as shown in <FIG> and <FIG>, the buffer structure further includes a first buffer pad <NUM> arranged outside the bottom wall of the counterweight part <NUM>, and the first buffer pad <NUM> can be made of rubber materials and has favorable elasticity. The design requirement of buffering and protecting the counterweight part <NUM> is satisfied through the set first buffer pad <NUM>.

The first buffer pad <NUM> can be coated outside the whole bottom wall of the counterweight part <NUM>, and the first buffer pad <NUM> can be fixed on the counterweight part <NUM> through bonding or clamping.

Preferably, the bottom wall of the counterweight part <NUM> includes a horizontal straight wall surface and an inclined wall surface formed by the structure by cutting corner <NUM>. In order to save materials, the first buffer pad <NUM> is arranged between the horizontal straight wall surface and the inclined wall surface in a coating manner.

When the counterweight part <NUM> falls down, a intersect position between the horizontal straight wall surface and the inclined wall surface is first in contact with the encapsulating baffle plate <NUM>. Therefore, by adopting the above design, the intersect position between the horizontal straight wall surface and the inclined wall surface is coated in the first buffer pad <NUM>, which reduces materials to the greatest extent and play a role of effective buffering, damping and protection.

Alternatively, in another solution, the first buffer pad <NUM> is arranged outside the inclined wall surface of the structure by cutting corner <NUM>, and the first buffer pad <NUM> has an elastic scaling thickness.

Further, as shown in <FIG>, the buffer structure further includes a second buffer pad <NUM> arranged on the bottom wall <NUM> of the first pressed structure <NUM>. Due to the arrangement of a second buffer pad <NUM> on the bottom wall <NUM>, the first buffer pad <NUM>, the second buffer pad <NUM> and the first pressed structure <NUM> all play a role of effective buffering and damping when the counterweight part <NUM> falls down. Thereby it is realized to reduce vibration and noise for the counterweight part <NUM> from multiple directions.

Preferably, a buffer pad installation element is arranged on the bottom wall <NUM>, corresponding to an intersect position between the structure by cutting corner <NUM> of the counterweight part <NUM> and the bottom wall of the counterweight part <NUM>. The second buffer pad <NUM> is embedded into the buffer pad installation element, and an upper surface of the second buffer pad <NUM> is slightly higher than or is flush with an upper surface of the bottom wall <NUM>.

The buffer pad installation element can be an installation hole with a through hollow which is formed on the bottom wall <NUM>, or can be a blind hole. The second buffer pad <NUM> with an annular shape is embedded and extruded within the buffer pad installation element. The second buffer pad does not occupy the space being occupied by the counterweight part <NUM> in falling process. Meanwhile, when the first pressed structure <NUM> cannot provide a sufficient buffer space for the counterweight part <NUM>, the second buffer pad <NUM> comes into effect to provide a larger buffer space for the counterweight part <NUM>. The counterweight part <NUM> does not make a greater noise even if the counterweight part <NUM> hits the second buffer pad <NUM>, thereby further improving the effect of buffering and noise reduction of the buffer structure.

Further, as shown in <FIG>, the bottom wall of the first pressed structure <NUM> is formed with one or more water relief holes <NUM> arranged at intervals. If washing water is accumulated in the installation cavity <NUM> of the lifting shell <NUM>, the accumulated washing water can be timely discharged through the water relief holes <NUM>. The bottom wall <NUM> of the first pressed structure <NUM> is the lowest position of the entire installation cavity <NUM>, so the water relief holes <NUM> are formed on the bottom wall <NUM> of the first pressed structure <NUM>, which is more beneficial for water flow to be converged and discharged.

Preferably, a check valve is installed inside the water relief holes <NUM>. By the arrangement of the check valve, water inside the installation cavity <NUM> may be discharged via the water relief holes <NUM>, while water inside the inner drum <NUM> cannot enter into the installation cavity <NUM> through the water relief holes <NUM>. Thereby the enclosing effect of the installation cavity <NUM> is ensured.

Further, in another solution, a second pressed structure which protrudes upwards is arranged at the position, corresponding to the counterweight part <NUM>, on a top wall <NUM> of the lifting shell <NUM>. The buffer structure further includes a second pressed structure which provides a buffer space for the rising of the counterweight part <NUM>. Through the arrangement of the second pressed structure, it can be effectively avoided making greater noises generated by the counterweight part <NUM> hitting the top wall <NUM> of the lifting shell <NUM> during centrifugal movement.

Moreover, through the arrangement of the second pressed structure, the initial position of the counterweight part <NUM> rises, and a greater buffer space can be provided for the downfall of the counterweight part <NUM>.

In order to solve the problem that the filtration structure arranged inside the existing laundry lifting device cannot achieve an effect of self-cleaning and needs to be cleaned or replaced regularly, the present embodiment mainly describes in detail the filtration structure inside the lifting shell based on a laundry lifting device for a washing machine described in Embodiment <NUM> to Embodiment <NUM>.

The present embodiment provides a laundry lifting device. The filtration structure inside the laundry lifting device can be self-cleaned, and can be maintained to be clean without manually cleaning the filtration structure, thereby ensuring the filtering effect.

As shown in <FIG>, the laundry lifting device provided in the present embodiment includes a lifting shell <NUM> arranged on an inner wall of the inner drum <NUM>. The lifting shell <NUM> constitutes an appearance outline of the laundry lifting device, and an inner cavity is formed by the lifting shell <NUM> and the inner wall of the inner drum <NUM>. The lifting shell <NUM> is provided with through holes for water flowing in and out, such that water inside the inner drum can flow into the inner cavity of the laundry lifting device through the through holes, and water flow in the inner cavity of the laundry lifting device can flow out of the inner cavity via the through holes. A filtration structure is arranged in the inner cavity, such that water flowing in the inner cavity of the laundry lifting device can be filtered by a filtration structure. A plurality of drainage outlets <NUM> configured to discharge water inside the inner drum are arranged on the inner wall of the inner drum <NUM>, and the inner cavity at least covers one drainage outlet <NUM>. Therefore, water flow can flow into the inner cavity of the laundry lifting device through the through holes on the lifting shell <NUM>, and water flowing into the inner cavity is discharged through the drainage outlet <NUM>. That is, flow of drainage water in the inner drum includes a drainage path from the through holes to the drainage outlet <NUM>. Since the inner cavity at least covers one drainage outlet <NUM>, the inner cavity includes at least one of the drainage paths. So the drainage path can pass through the filtration structure arranged in the inner cavity. In this way, the filtration structure can be flushed by utilizing drainage water flowing in the drainage path. Thereby it is achieved to flush away impurities to clean the filtration structure by utilizing the drainage water flow, such as thread debris remained on the filtration structure.

As shown in <FIG> and <FIG>, the filtration structure arranged inside the filtration cavity <NUM> is selected from a filter screen, a comb-shaped filtration structure <NUM> and other structures capable of filtration. In order to flush the filtration structure by water in the inner drum and perform the filtration function of the filtration structure, the position of the filtration structure in the inner cavity should also be proper, where not only filter treatment of the filtration structure is performed, but also impurities such as thread debris remained on the filtration structure are flushed away. The filtration structure includes a filtration surface configured to intercept impurities in the water flow. After the impurities are filtered by the filtration surface in the filtration process, impurities are adhered onto the filtration surface. In order to ensure a filtering effect of the filtration structure, the water flow needs to flow through the filtration surface to flush the filtration structure. The water flow needs to flow through the filtration surface to flush away impurities such as thread debris remained on the filtration surface. The filtration surface may be a surface of the filter screen, or may be a cross section of the comb-shaped filtration structure <NUM> which can block impurities such as thread debris. As shown in the figures, the top wall of the lifting shell <NUM> is formed with through holes, and each row of comb-shaped bulges all forms a plane configured to intercept impurities and arranged to be parallel to the top wall <NUM> of the lifting shell <NUM> which is provided with through holes. The cross section in the filtration structure is taken as filtration surface to intercept impurities such as thread debris. An included angle is formed between the direction of the water flow flowing through the position of the filtration surface in the inner cavity and the filtration surface. In this way, the flushing water flow and the drainage water flow inevitably flows through the filtration surface, so further the flushing water flow is filtered by the filtration section, and the drainage water flow can flush away impurities such as thread debris on the filtration surface.

Preferably, the direction of the water flow through the position of the filtration surface in the inner cavity is vertical to the filtration surface. Preferably, the flushing water flow and the drainage water flow are vertical to the filtration surface, in this way, the contact area between the drainage water flow and the flushing water flow and the filtration surface is the maximum. Thereby it is more beneficial for filtering the flushing water flow, and impurities are easier to be flushed away by the drainage water flow in the flowing process. Impurities intercepted on the above planes for can be flushed away only by drainage water flow flowing, therefore, the drainage water flow and the flushing water flow at the position of the filtration surface are both intersected with the filtration surface. Or for other types of filtration structures, the drainage water flow and the flushing water flow also need to flow through the position of the filtration surface.

More preferably, the filtration surface is set to be parallel to the top wall <NUM> of the lifting shell <NUM> on which through hole are arranged. The top wall <NUM> of the lifting shell <NUM> is provided with through holes for water inlet, and the filtration surface is set to be parallel to the top wall <NUM>, such that water flow through the through holes on the top wall <NUM> is vertical to the filtration surface. Moreover, both the flushing water flow and the drainage water flow enter the inner cavity through the through holes, and the filtration surface is arranged in parallel to the top wall <NUM> at which through holes are arranged, such that the drainage water flow entering into the inner cavity easily flushes the filtration surface, and the flushing water flow entering into the inner cavity can be filtered. Moreover, the filtration surface projects towards the top wall <NUM>, and the projection at least covers part of the through holes on the top wall <NUM>. Preferably, the projection covers all the through holes on the top wall <NUM>. In this way, water flow entering through the through holes on the top wall <NUM> flows to the filtration surface. As to the filter screen, the filter screen needs to be arranged in parallel to the top wall <NUM>, such that drainage water flow flowing via the through holes of the top wall <NUM> can directly flow to the filter screen, and it is achieved that the flushing water flow is filtered by the filter screen and the drainage water flow flushes the filter screen.

More preferably, the filtration surface is arranged at the position close to the top wall <NUM> in the filtration cavity <NUM>. The through holes for allowing water to pass are arranged on the top wall <NUM>, the filter section is set to be close to the top wall <NUM>, so the filtration section is close to the through holes. The closer the water flow entering into the inner cavity approaches the through holes, the larger the water flow is. Therefore, when the filtration surface is set to be close to the through holes, the filtration surface can be flushed with larger water flow, which is further beneficial for cleaning impurities such as thread debris remained on the filtration structure. Moreover, the water flow rate at the through holes is the highest. When the filtration surface is arranged to be close to the top wall <NUM> provided with through holes, the filtration surface can filter more water flow entering into the inner cavity, to further achieve a better filtering effect.

Specifically, a filtration cavity <NUM> is enclosed by a second baffle plate <NUM> arranged in the laundry lifting device and configured to guide flow of the drainage water flow and the flushing water flow, the top wall <NUM> of the lifting shell <NUM> provided with through holes, and an inner wall of the inner drum <NUM>. The filtration cavity <NUM> at least covers part of the through holes on the top wall <NUM>, and the filtration structure is arranged in the filtration cavity <NUM>. That is, the filtration cavity <NUM> is communicated with the through holes of the lifting shell <NUM> and the drainage outlet <NUM> on the inner wall of the inner drum <NUM>, to discharge water out of the inner drum. The filtration structure is set in the filtration cavity <NUM>. When water inside the inner drum of a washing machine flows along the filtration cavity <NUM>, the filtration structure in the filtration cavity <NUM> is cleaned. The position and structure of the laundry lifting device on the inner wall of the inner drum <NUM> of the present embodiment are set reasonably, such that the inner cavity of the laundry lifting device can constitute a filtration cavity <NUM> which guides the drainage water flow and the flushing water flow. The flushing water flow can is guided to flow through the filtration structure by the filtration cavity <NUM>, and can be filtered with a filtration structure, and the drainage water flow can be guided to flow through the filtration structure by the filtration cavity <NUM>. In this way, the filtration structure can be cleaned automatically by utilizing the drainage water flow in the inner drum.

It can be known from the above that, the drainage water flow in the filtration cavity <NUM> is water supply for cleaning the filtration structure. It should be ensured there is sufficient water flow in the filtration cavity <NUM> during drainage. Therefore, partition plates can be arranged in the inner cavity of the laundry lifting device, the partition plates can form the filtration cavity <NUM>, such that the filtration cavity <NUM> formed by the partition plates for drainage can enable the discharged water to flow according to a set trajectory. As shown in <FIG>, <FIG> and <FIG>, the top wall <NUM> is connected with a second baffle plate <NUM> and a third baffle plate <NUM> to form a filtration cavity <NUM>. The filtration structure is arranged between the second baffle plate <NUM> and the third baffle plate <NUM>. Preferably, the area arranged between the second baffle plate <NUM> and the third baffle plate <NUM> covers all the through holes on the top wall <NUM>. The second baffle plate <NUM> and the third baffle plate <NUM> are as the partition plates. Through limiting of the second baffle plate <NUM> and the third baffle plate <NUM>, the drainage water flow and the flushing water flow can only flow within a space between the second baffle plate <NUM> and the third baffle plate <NUM>. Thereby it is avoided that the drainage water flow is over divergent when the flowing range of the drainage water flow is too wide. An impact force of the drainage water flow is insufficient to influence the cleaning effect for the filtration structure.

Since the drainage outlet <NUM> is arranged outside the second baffle plate <NUM>, the filtration cavity <NUM> cannot be enclosed by the second baffle plate <NUM>, the top wall <NUM> and the inner wall of the inner drum <NUM>, and the drainage water flow cannot enter into the drainage outlet <NUM>. Therefore, an opening <NUM> at least needs to be arranged in the filtration cavity <NUM>, such that the drainage water flow can flow into the drainage outlet <NUM> via the opening <NUM>.

Specifically as shown in <FIG> and <FIG>, there is a clearance between the end wall of the second baffle plate <NUM> close to the drainage outlet <NUM> and the inner wall of the inner drum <NUM>, and the clearance is as the opening <NUM> which allows water in the inner cavity to flow into the drainage outlet <NUM>. So the drainage water flow can flow out from the opening <NUM>, and finally flows to the drainage outlet <NUM> for drainage. Since the drainage water flow inside the filtration cavity <NUM> finally needs to flow to the drainage outlet <NUM> for drainage, a diversion plate <NUM> for guiding water to flow to the drainage outlet <NUM> can be arranged inside the filtration cavity <NUM>. Through the arrangement of the diversion plate <NUM>, water flow inside the filtration cavity <NUM> easily gathers at the drainage outlet <NUM>, such that the water flow flowing to the drainage outlet <NUM> is larger. Therefore, the water which contains impurities such as thread debris can is guided to flow to the drainage outlet <NUM> for drainage by the diversion plate <NUM> after the filtration structure is cleaned. The water contains impurities such as thread debris which blocks the flowing of the water after the filtration structure is cleaned. The diversion plate <NUM> enables the water flow to be more gathered, and water flow flowing to the drainage outlet <NUM> is larger, such that thread debris is easily discharged out from the drainage outlet <NUM>.

Specifically as shown in <FIG> and <FIG>, the diversion plate <NUM> is an inclined structure which gradually inclines from the third baffle plate <NUM> towards the opening <NUM> below the second baffle plate <NUM>, which is more beneficial for the drainage water flow to flow to the drainage outlet <NUM> along the inclined diversion plate <NUM>.

Moreover, the inclined structure of the diversion plate <NUM> can improve flow velocity of the drainage water flow, and is easier to flush away impurities such as thread debris in the drainage water flow. Preferably, all the diversion plates <NUM> is a conical surface with a conical tip pointing towards the drainage outlet <NUM>. A conical surface of the inclined diversion plate <NUM> makes the area of the section flowing to the drainage outlet <NUM> be gradually reduced, such that the flow velocity of the water flow flowing to the drainage outlet <NUM> is accelerated. Thereby it is more beneficial to discharge the water carrying thread debris through the drainage outlet <NUM>.

Claim 1:
A laundry lifting device for a washing machine, including:
a lifting shell (<NUM>), internally provided with a cavity,
wherein the laundry lifting device is installed on a drainage outlet (<NUM>) of an inner wall of an inner drum (<NUM>);
a centrifugal drainage mechanism (<NUM>), installed in the lifting shell (<NUM>), wherein an initial state of the centrifugal drainage mechanism (<NUM>) is a closed state, and the centrifugal drainage mechanism (<NUM>) is operated for drainage under a centrifugal force, wherein the centrifugal drainage mechanism (<NUM>) includes a centrifugal component (<NUM>) and a valve plug component (<NUM>) connected with the centrifugal component (<NUM>); the centrifugal component (<NUM>) includes a counterweight part (<NUM>) being capable of moving under a centrifugal force, and the movement of the counterweight part (<NUM>) drives the valve plug component (<NUM>) to operate,
characterized in that the laundry lifting device further comprises: a filtration cavity (<NUM>) within the cavity of the lifting shell (<NUM>), wherein an opening (<NUM>) is arranged in the filtration cavity (<NUM>), such that the drainage water flow can flow into the drainage outlet (<NUM>) via the opening (<NUM>) and
an independently enclosed installation cavity (<NUM>), being separated in the cavity of the lifting shell (<NUM>), and the centrifugal drainage mechanism (<NUM>) being installed in the installation cavity (<NUM>).