WO2019174502A1

WO2019174502A1 - Washing machine

Info

Publication number: WO2019174502A1
Application number: PCT/CN2019/077116
Authority: WO
Inventors: 吕佩师; 许升; 吕艳芬
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2018-03-15
Filing date: 2019-03-06
Publication date: 2019-09-19
Also published as: JP2021527455A; JP7319290B2; CN110273251A

Abstract

A washing machine, comprising a box (1), a washing tub (2) rotatably disposed in the box (1). The washing tub (2) is configured as a barrel structure for containing water during washing; a water guiding passage (4) for guiding washing water from top to bottom for drainage is provided on the peripheral wall of the washing tub (2); the upper end of the water guiding passage (4) is a water inlet end and the water guiding passage (4) is provided with a water inlet (41) communicated with the interior of the washing tub (2); the upper part of the washing tub (2) is further provided with a water collecting and guiding structure (3) that guides the washing water rising due to a centrifugal force to the water inlet (41) and to enter the water guiding passage (4) so as to be drained out of the washing tub (2). The water collecting and guiding structure (3) comprises a water blocking unit (31) that prevents the washing water from continuing rising along the inner peripheral wall of the washing tub (2); the lower surface of the water blocking unit (31) facing the bottom of the washing tub (2) is a water blocking end surface (310) that prevents the water from climbing; the water blocking end surface (310) defines a water guiding path that guides the washing water to enter the water guiding passage (4) in a circumferential direction. The washing machine can quickly guide the washing water into the water guiding passage (4) by using the water collecting and guiding structure (3) disposed at the upper part of the washing tub (2), thereby increasing the drainage speed and improving the dewatering efficiency.

Description

washing machine

Technical field

The invention belongs to the field of washing equipment, and in particular to a washing machine.

Background technique

The washing machine is designed as a device for washing laundry by using electricity. Generally, the washing machine includes: a tub for accommodating washing water; a rotating tub rotatably installed inside the tub; and a pulsator rotatably mounted in the rotating tub The bottom of the motor; the motor and the clutch are configured to rotate the rotating tub and the pulsator; and the balance ring is disposed above the rotating tub to replenish the weight and balance when the rotating tub rotates. When the rotating tub and the pulsator are rotated in a state where the laundry and the detergent are introduced into the rotating tub, the pulsator agitates the washing water together with the laundry introduced into the rotating tub, thereby removing the stain from the laundry.

In order to increase the washing capacity of the washing machine, a larger rotating tub is required, that is, the height or diameter of the rotating tub needs to be increased. If the rotary tub has a larger size, the bucket accommodating the rotary tub and the cabinet accommodating the tub also need to increase as the rotary tub increases. The increase of the casing corresponding to the appearance of the washing machine is limited by the space of the area in which the washing machine is installed. The position of the general user in the home for placing the washing machine is limited, and the purpose of increasing the size of the washing machine to increase the capacity of the washing tub is not realistic, such as how to Increasing the capacity of the rotating drum without increasing the casing of the washing machine becomes a major problem for the designer. The birth of the non-porous washing tub solves the problem of expansion, cancels or reduces the tub, and the rotating tub is used as a washing tub for holding washing water, and is configured as a non-porous washing tub.

When the washing tub rotates at a high speed, the water in the washing tub climbs up along the washing tub wall by the centrifugal force to the drain port provided at the upper end, and some of the water will continue to climb to the balance ring joint, overflowing from the balance ring joint. In the bucket, the overflowing washing water easily corrodes the casing and causes a short circuit; even if the balance ring is sealed, the washing water that climbs above the drain can not be discharged, reducing the drainage speed and dewatering efficiency.

The present invention has been made in view of the above.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a washing machine capable of improving drainage speed and dewatering efficiency.

In order to solve the above technical problem, the basic idea of adopting the technical solution of the present invention is: a washing machine comprising a box body and a washing tub rotatably disposed in the box body, wherein the washing tub is configured as a barrel structure for holding water when washing, The peripheral wall of the washing tub is provided with a water guiding passage for guiding and discharging the washing water from the top to the bottom. The upper end of the water guiding passage is an inlet end, and has a water inlet communicating with the inside of the washing tub, and the upper part of the washing tub is further provided with a water collecting guiding structure. The washing water rising due to the centrifugal force is collected and guided to the water inlet, and is discharged into the water guiding passage and discharged to the outside of the washing tub.

Further, the water collecting guiding structure comprises a water blocking unit that blocks the washing water from rising along the inner wall of the washing tub, and the lower surface of the water retaining unit facing the bottom of the washing tub is a water retaining end face that blocks the water from climbing upward, and the water retaining end face is limited A water guiding path that guides the washing water to enter the water guiding channel in the circumferential direction.

Further, the water blocking end surface includes at least one circumferential inclined surface that is gradually changed in the circumferential direction;

Preferably, the distance between the circumferential inclined surface and the bottom of the washing tub gradually increases in the circumferential direction, and the water inlet is disposed near the circumferential inclined surface and the bottom of the washing tub;

Still preferably, the upper edge of the water inlet is tangent to the circumferentially inclined surface of the maximum distance from the bottom of the wash tub.

Further, the water retaining end surface includes a radially inclined surface inclined from the center to the outer circumference in a radial direction;

Preferably, the radial inclined surface gradually increases in distance from the bottom of the washing tub along the radially outer circumference.

Further, the water retaining unit cooperates with the inner wall of the washing tub to form an annular sump, the sump opening is downward, and the bottom of the tank forms a water retaining end face that blocks the water from rising upward, and the water inlet is disposed in the sump.

Further, the upper end of the washing tub is provided with a balance ring, and the balance ring is sealed and installed between the washing tub, and the balance ring constitutes the water retaining unit. Preferably, the lower part of the balance ring is provided with a sump or a balance ring and a washing tub. The inner peripheral wall cooperates to form a sump.

Alternatively, the inner peripheral wall of the upper portion of the washing tub is circumferentially mounted with an annular water retaining rib protruding from the inner peripheral wall surface, and the annular water retaining rib constitutes the water retaining unit.

Further, the upper opening of the washing tub has a necking structure, and the transverse wall bent from the upper end of the peripheral wall toward the center constitutes the water retaining end surface.

Further, the water collecting guiding structure includes a guiding unit that guides the washing water rising to the height of the water inlet of the water guiding channel to the water inlet in the circumferential direction.

Further, at least a part of the guiding unit and the water inlet are on the same circumference of the inner wall of the washing tub, and the part guiding unit extends from the water inlet in the circumferential direction of the dewatering rotation of the washing tub, and the distance from the center of the washing tub is gradually decreased. .

Further, the guiding unit comprises a curved surface structure which is arranged in the circumferential direction of the inner wall of the washing tub and has a gradient from the center of the washing tub. The distance between one end of the adjacent water inlet and the center of the washing tub is the largest, and the direction of dehydration of the washing tub is rotated. Extending, the further away from the water inlet, the smaller the distance between the guiding unit and the center of the washing tub;

Preferably, the method further comprises an inclined structure which is disposed from the bottom to the upper direction of the washing tub and which gradually becomes larger from the center of the washing tub.

Further, the guiding unit is an auxiliary structure installed on the inner wall of the washing tub, or a pressing structure of the peripheral wall of the washing tub at least on the circumference of the water inlet of the water guiding channel.

Further, the water guiding channel is installed inside the washing tub, and the water inlet is arranged on the upper side of the water guiding channel corresponding to the radial side wall of the washing tub, and the water guiding channel defines the water guiding chamber from the top to the bottom, and the inside of the washing tub The water enters the water guiding chamber through the water inlet in the circumferential direction of the washing tub, and the lower portion of the water guiding chamber communicates with the water outlet of the peripheral wall of the washing tub and/or the bottom wall;

Preferably, the water inlet is disposed on a radial side wall of the water guiding channel that is consistent with the dewatering rotation direction of the washing tub, and the water inlet opening direction faces the dehydrating rotation direction of the washing tub.

Alternatively, the water guiding channel is installed outside the washing tub, defines a water guiding chamber from the top to the bottom, and the side wall of the water guiding chamber near the center of the washing tub is arranged to communicate with the inside of the washing tub in the radial direction. At the nozzle, the water inside the washing tub enters the water guiding chamber through the water inlet in the radial direction of the washing tub, and the lower portion of the water guiding chamber has a water outlet.

Further, the water guiding channel is a separate structure, and the water guiding chamber is inside, or the water guiding channel is a cover structure, and the peripheral wall of the washing tub is shielded to form the water guiding chamber.

The washing machine of the present invention further comprises a water receiving device disposed in the box body for collecting the drain water of the washing tub, the water receiving device comprises a water collecting chamber and a drainage component for draining the outside of the washing machine, and the water outlet of the water guiding channel is located at the water collecting chamber Inside.

After adopting the above technical solution, the present invention has the following advantageous effects compared with the prior art.

The washing tub of the washing machine of the invention can be used for water in the washing process, so the washing tub adopts the structure of “non-porous inner tub”, and at the same time, the design of the outer tub is cancelled, and the water receiving device is used instead of the outer bucket to receive water and drainage, which makes the invention have The following technical effects:

1. When the volume of the washing machine box is constant, the capacity of the washing tub can be increased to realize the expansion effect of the washing machine;

2. The water in the washing process only exists in the washing tub, which avoids the problem that the inner wall of the outer tub and the outer wall of the washing tub are “stained and contaminated” by the water between the inner and outer barrels of the conventional washing machine, and has better washing effect;

3. The outer drum is removed, and the washing bucket is a water tank. During the washing process, no water is stored between the inner and outer barrels, which reduces the amount of washing water and saves the washing water consumption;

4. Using the water guiding channel from the top to the bottom of the washing tub to drain from the drain port at the lower part of the peripheral wall of the washing tub, the expansion effect can be better obtained;

5. The water collecting guiding structure installed on the upper part of the washing tub can quickly guide the washing water into the water guiding passage, thereby improving the drainage speed and the dehydration efficiency;

6. The guiding unit of the invention has the advantages of simple structure and convenient installation, does not affect the expansion, and saves installation cost.

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are intended to be illustrative of the invention. It is apparent that the drawings in the following description are only some embodiments, and other drawings may be obtained from those skilled in the art without departing from the drawings. In the drawing:

Figure 1 is a schematic view showing the structure of a washing machine of the present invention;

2 and 3 are schematic views showing different structures of the water retaining unit of the present invention;

4 to FIG. 9 are schematic views of different embodiments of the water retaining unit of the present invention, wherein FIG. 7 is an enlarged view of a portion A in FIG. 6; and FIG. 9 is an enlarged view of a portion B in FIG.

Figure 10 is a schematic view showing the structure of a guiding unit of the present invention.

It is to be understood that the drawings and the written description are not intended to limit the scope of the present invention in any way.

detailed description

The embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected in one piece; either directly or indirectly through an intermediate medium. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

As shown in FIG. 1 to FIG. 10, a washing machine of the present invention comprises a box body 1 and a washing tub 2 rotatably disposed in the box body. The washing tub 2 is configured as a barrel structure for holding water when washing, and the washing tub is The 2nd wall is provided with a water guiding passage 4 for guiding and discharging the washing water from the top to the bottom. The upper end of the water guiding passage 4 is a water inlet end, and has a water inlet 41 communicating with the inside of the washing tub, and the upper part of the washing tub 2 is also provided with water collecting water. The guiding structure 3 guides the washing water rising due to the centrifugal force to the water inlet 41, and enters the water guiding passage 4 to be discharged to the outside of the washing tub 2. The water conduit 4 of the present invention is a self-contained structure having the water guiding chamber 42 therein, or the water guiding channel 4 is a cover structure, and is disposed on the peripheral wall of the washing tub 2 to form the Water guiding chamber 42. The water guiding passage 4 may be disposed on the inner peripheral wall of the washing tub 2 or may be disposed on the outer peripheral wall of the washing tub 2.

The washing machine of the present invention further includes a water receiving device 6 disposed in the casing 1 for collecting the water discharged from the washing tub 2. The water receiving device 6 includes a water collecting chamber 61 and a drain member 62 for draining the outside of the washing machine, and the water guiding passage 4 is downward. The discharged water is collected by the water collecting chamber 61, and then discharged to the outside by the drain member 62.

Specifically, in the washing stage, the washing water is immersed in the washing tub 2 to wash the laundry; when the washing machine is dehydrated, the washing tub 2 rotates, that is, the water guiding passage 4 rotates with the washing tub 2, and the liquid in the washing tub 2 acts as a centrifugal force. Moving downwards upwards, rising to a certain height, blocked by the water collecting guiding structure 3 and guiding into the water guiding chamber 42 from the water inlet 41, and the liquid entering the water guiding chamber 42 is discharged into the water receiving device 6 by the water guiding channel 4 Then, it is discharged outward by the drain member 62.

Embodiment 1

As shown in FIG. 1 to FIG. 9, the water collecting guiding structure 3 of the present embodiment includes a water retaining unit 31 that blocks the washing water from rising along the inner peripheral wall of the washing tub, and the water retaining unit 31 blocks toward the lower surface of the washing tub bottom. The water retaining end face 310, in which the water climbs upward, defines a water guiding path for guiding the washing water to flow into the water guiding passage in the circumferential direction of the washing tub.

Further, the water retaining end surface 310 includes at least one circumferentially inclined surface 3101 which is tapered in the circumferential direction (see FIG. 2). The distance between the circumferential inclined surface 3101 and the bottom of the washing tub gradually increases in the circumferential direction, and the water inlet 41 of the water guiding passage is disposed near the maximum distance between the circumferential inclined surface 3101 and the bottom of the washing tub; preferably, the upper edge of the water inlet 41 It is tangent to the circumferential inclined surface 3101 which is the maximum distance from the bottom of the washing tub.

If the washing tub is provided with at least two water guiding channels, the water blocking end surface 310 includes at least two circumferentially inclined surfaces 3101 which are gradually changed in the circumferential direction, and the radial side walls of one of the water guiding channels are gradually extended to the other water guiding channel. The water inlet, the gradient law of each circumferential inclined surface 3101 is the same. Since the flow direction of the water flow on the circumference is opposite to the direction of dehydration rotation of the washing tub, it extends in the same direction as the spin-drying direction of the washing tub (clockwise or counterclockwise), that is, the opposite direction of the flow direction of the water flow on the circumference, The circumferential inclined surface 3101 is designed to gradually decrease in distance from the bottom of the washing tub.

And/or, the water retaining end face 310 includes a radially inclined surface 3102 that is inclined in the radial direction from the center to the outer circumference (see FIG. 3). Preferably, the radial inclined surface 3102 gradually increases in distance from the radially outer circumference to the bottom of the washing tub, that is, the radial inclined surface 3102 is inclined downward from the outer side in the radial direction, and the water inlet 41 is disposed near the radial inclined surface. 3102 The outer circumference, the closest position to the inner peripheral wall of the washing tub 2.

In the dehydration stage, the washing tub 2 rotates at a high speed, the washing water climbs up along the peripheral wall of the washing tub, and the climbing process simultaneously rotates circumferentially. When rising to be blocked by the water retaining unit 31, if the water retaining end surface of the water retaining unit is flat, then After the water flow is blocked, the water flow approaches the static or low speed circumferential rotation, which seriously affects the speed of the drainage. However, the present invention sets the water retaining end surface 310 as a radial and/or circumferential inclined surface, destroying the smooth flow state of the water flow, and guiding The washing water quickly flows into the water guiding passage 4.

Embodiment 2

As shown in FIG. 4 to FIG. 9 , which is a schematic diagram of the water retaining unit of the present invention, the water retaining unit 31 of the present invention is:

The annular water retaining rib structure (see FIG. 5) is separately installed on the upper portion of the inner peripheral wall of the washing tub 2, and the annular water retaining rib 311 protrudes from the circumference of the washing tub 2 from the inner peripheral wall surface.

Alternatively, the balance ring structure is provided at the upper end of the washing tub 2, the balance ring 5 is sealedly mounted with the washing tub 2, and the lower surface of the balance ring 5 constitutes the water retaining end face 310 (see Figs. 6 and 7).

Still further, the washing tub 2 has a necked structure at the upper opening thereof, and the horizontal wall 312 bent from the upper end of the peripheral wall toward the center constitutes the water retaining end face 310 (see Figs. 8 and 9).

Further, in order to have a better water retaining and water guiding function, the water retaining unit 31 is formed alone or in combination with the inner peripheral wall of the washing tub 2 to form an annular sump 313 (see FIG. 4), and the sump 313 is opened downward. The bottom of the groove constitutes a water blocking end face 310 that blocks the upward climb of the water, and the water inlet 41 of the water guiding channel 4 is provided in the sump 313.

Corresponding to the above-mentioned water retaining unit 31, the annular water retaining rib 311 itself has a sump 313; the lower part of the balance ring 5 is provided with a sump or the balance ring 5 cooperates with the inner peripheral wall of the washing tub 2 to form a sump 313 (refer to FIG. 7); The transverse wall 312 of the necked structure cooperates with the inner peripheral wall of the washing tub 2 and the annular rib 51 at the lower portion of the balance ring 5 to form a sump 313 (see Fig. 9).

Embodiment 3

As shown in Fig. 10, the water collecting guide structure 3 of the present invention includes a guiding unit 32 that guides the washing water rising to the height of the water inlet port 41 to the water inlet in the circumferential direction.

Further, at least a part of the guiding unit 32 and the water inlet 41 are on the same circumference of the inner peripheral wall of the washing tub 2, and the partial guiding unit 32 extends from the water inlet 41 in the circumferential direction of the dehydration rotation of the washing tub 2, and the washing tub The distance of the center O gradually decreases.

Further, the guiding unit 32 includes a curved surface structure 320 which is disposed in the circumferential direction of the inner wall of the washing tub and has a gradient from the center of the washing tub. The distance D between one end of the adjacent water inlet 41 and the center O of the washing tub is the largest, along the washing The direction in which the tub is dehydrated and rotated is extended, and the further away from the water inlet 41, the smaller the distance d between the guiding unit 32 and the center O of the washing tub.

If the washing tub 2 is provided with at least two water guiding channels 4, the guiding unit 32 includes at least two curved surface structures 320 which are gradually changed in the circumferential direction, and gradually extend from the radial side walls of one of the water guiding channels to the other water guiding channel. The water inlet has the same gradation rule of each curved surface structure 320.

Preferably, the guiding unit 32 further includes an inclined structure (not shown) which is disposed from the bottom to the axial direction of the washing tub 2 and which gradually becomes larger from the center O of the washing tub. Preferably, the washing tub 2 has a certain taper, and the upper end of the washing tub is larger than the diameter of the lower end. When the washing tub 2 rotates at a high speed, the washing water in the washing tub 2 can easily follow the inner wall of the washing tub under the action of centrifugal force. Climb up.

The guiding unit 32 of the present invention is an auxiliary structure installed on the inner peripheral wall of the washing tub 2, or a pressing structure of the peripheral wall of the washing tub 2 at least on the circumference of the water inlet port 41 of the water guiding passage.

Embodiment 4

As shown in FIG. 4, the water guiding channel 4 of the embodiment is installed inside the washing tub 2, and the water inlet 41 is disposed on the upper side of the water guiding channel 4 corresponding to the radial side of the washing tub, and the water guiding channel 4 is defined from the upper direction. In the lower water guiding chamber 42, the water inside the washing tub 2 enters the water guiding chamber 42 through the water inlet 41 in the circumferential direction of the washing tub, and the lower portion of the water guiding chamber 42 and the water outlet 21 of the peripheral wall and/or the bottom wall of the washing tub In the embodiment, the drain port 21 is disposed at a lower portion of the peripheral wall of the washing tub. Further, a drain passage for guiding water can be disposed from the drain port 21 on the outer tub wall of the washing tub to prevent the drain port from splashing water.

Preferably, the water inlet 41 is disposed on a radial side wall of the water conduit 4 that coincides with the direction of dehydration of the washing tub 2, and the water inlet opening direction faces the dehydration rotation direction of the washing tub 2.

Alternatively, as shown in FIG. 5, the water guiding channel 4 is installed outside the washing tub 2, defines a water guiding chamber 42 from the top to the bottom, and is configured with a side wall of the water guiding chamber 42 near the center of the washing tub. The water inlet 41 communicating with the inside of the washing tub in the radial direction, the water inside the washing tub 2 enters the water guiding chamber 42 through the water inlet 41 in the radial direction of the washing tub, and the lower portion of the water guiding chamber 42 has the water outlet 43.

The water conduit 4 of the present invention may be a structure independently mounted on the peripheral wall of the washing tub, having the water guiding chamber 42 inside, or the water guiding passage 4 is a shell structure, and the peripheral wall of the washing tub 2 The cover is formed to form the water guiding chamber 42.

When the water conduit 4 is a separate structure mounted on the outer peripheral wall of the washing tub, the water inlet 41 is an opening at the upper end of the water conduit 4 toward the side wall of the washing tub, and the upper portion of the peripheral wall of the washing tub 2 is provided with a drain port 21 (see the figure). 5).

When the water guiding passage 4 is a cover structure mounted on the outer peripheral wall of the washing tub, the water inlet 41 on the side wall of the water guiding chamber 42 near the center of the washing tub is constructed as the drain opening 21 of the upper portion of the peripheral wall of the washing tub 2.

In order to improve the drainage effect of the washing machine, the plurality of drain ports 21 are plural, and the plurality of drain ports 21 are equally spaced along the circumferential direction of the washing tub 2, and the plurality of water guiding channels 4 are plural, and the plurality of water guiding channels 4 are along the circumference of the washing tub 2. Provided to the interval, each of the water conduits 4 is provided with at least one corresponding drain port 21. For example, the drainage ports 21 are two and are disposed opposite to each other in the radial direction of the washing tub 2, and the water guiding channels 4 are two and are disposed opposite to each other in the radial direction of the washing tub 2, and the two water guiding channels 4 are respectively corresponding one by one. Two drain ports 21 are provided (see Figures 4 and 5).

Embodiment 5

The washing machine of the above embodiment of the present invention adopts a single barrel structure, that is, only the washing tub 2 is provided without additionally providing a water tub, so that the water in the washing tub 2 is more water-saving during washing, and further passes through the inner peripheral wall of the washing tub 2. The water guiding channel 4 is disposed on the water guiding channel 4, and the water inlet port 41 is disposed on the water guiding channel 4, and the water outlet port 21 is disposed in the lower portion of the peripheral wall of the washing tub 2 and/or the bottom wall. When the water is dehydrated, the water in the washing tub 2 rises under the action of centrifugal force. The water inlet port 41 enters the water conduit 4 and is guided by the water conduit 4 to the drain port 21 to be discharged through the drain port 21. Thereby, the dewatering effect can be improved at the same time in the case where the water tank is eliminated to simplify the structure, increase the capacity, reduce dirt and bacteria growth, and save water.

Moreover, the water guiding channel 4 is disposed inside the washing tub 2, and it is not necessary to consider the collision spacing required for the other structures between the tank 1 and the washing tub to be enlarged, and the volume of the washing tub is relatively increased under the condition that the tank volume is constant, and the volume is increased. The effect of expansion.

The drain port 21 may be provided on the peripheral wall of the washing tub 2, or may be provided on the bottom wall of the washing tub 2, or the drain port 21 may be provided on the peripheral wall and the bottom wall. Specifically, the drain port 21 is disposed on the peripheral wall of the washing tub 2 such that the water guiding channel 4 covers the drain port 21, and the lower end of the water guiding channel 4 is only connected to the peripheral wall of the washing tub 2, which is beneficial to the water guiding channel 4 and the washing tub. Seal of the perimeter wall of 2. Of course, the drain port 21 in the present invention may also be disposed on the bottom wall of the washing tub 2, and the water guiding channel 4 extends downward to communicate with the drain port 21, which is advantageous for improving the dehydration efficiency during dehydration, has a good dewatering effect, and can be effective. The splash of water from the drain port 21 is reduced. The drain port 21 is provided on the peripheral wall and the bottom wall, which facilitates the sealing of the water guiding passage 4 and the peripheral wall of the washing tub 2, and also improves the dewatering efficiency during dehydration, and can effectively prevent water from splashing out of the drain port 21.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any technology that is familiar with the present patent. Those skilled in the art can make some modifications or modifications to equivalent embodiments by using the technical content of the above-mentioned hints without departing from the technical scope of the present invention, but the technology according to the present invention does not deviate from the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the present invention.

Claims

A washing machine comprises a box body and a washing tub rotatably disposed in the box body, wherein the washing tub is configured as a barrel structure for holding water when washing, and the washing bucket has a washing wall from top to bottom The water guiding channel for guiding the discharge, the upper end of the water guiding channel is a water inlet end, and has a water inlet communicating with the interior of the washing tub, and the upper part of the washing tub is further provided with a water collecting guiding structure, and the washing water rising due to the centrifugal force is collected and guided to The water inlet is discharged into the water guiding passage and discharged to the outside of the washing tub.
The washing machine according to claim 1, wherein the water collecting guiding structure comprises a water blocking unit that blocks the washing water from rising along the inner peripheral wall of the washing tub, and the water blocking unit faces the lower surface of the washing tub bottom to block the water upward. The climbing water retaining end surface defines a water guiding path for guiding the washing water to enter the water guiding passage in the circumferential direction.
A washing machine according to claim 2, wherein said water retaining end surface comprises at least one circumferentially inclined surface which is gradually changed in the circumferential direction;

Preferably, the distance between the circumferential inclined surface and the bottom of the washing tub gradually increases in the circumferential direction, and the water inlet is disposed near the circumferential inclined surface and the bottom of the washing tub;

Still preferably, the upper edge of the water inlet is tangent to the circumferentially inclined surface of the maximum distance from the bottom of the wash tub.
A washing machine according to claim 2 or 3, wherein said water retaining end surface includes a radially inclined surface which is inclined from the center to the outer circumference in the radial direction;

Preferably, the radial inclined surface gradually increases in distance from the bottom of the washing tub along the radially outer circumference.
The washing machine according to any one of claims 2 to 4, wherein the water retaining unit cooperates with the inner wall of the washing tub to form an annular sump, the sump opening downward, and the bottom of the tank forms a blocking water upward. The climbing water retaining end face is provided in the water collecting tank.
The washing machine according to any one of claims 2 to 5, characterized in that: the upper end of the washing tub is provided with a balance ring, and the balance ring is sealed and installed between the washing tub, and the balance ring constitutes the water retaining unit, preferably The lower part of the balance ring is provided with a sump or a balance ring to cooperate with the inner wall of the washing tub to form a sump.
The washing machine according to any one of claims 2 to 5, characterized in that the inner peripheral wall of the upper portion of the washing tub is circumferentially mounted with an annular water retaining rib protruding from the inner peripheral wall surface, and the annular water retaining rib constitutes the blocking block. Water unit.
The washing machine according to any one of claims 2 to 4, characterized in that the upper opening of the washing tub has a constricted structure, and the transverse wall bent from the upper end of the peripheral wall toward the center constitutes the water retaining end surface.
The washing machine according to claim 1, wherein the water collecting guiding structure includes a guiding unit that guides the washing water rising to the height of the water inlet of the water guiding passage to the water inlet in the circumferential direction.
The washing machine according to claim 9, wherein at least a part of the guiding unit and the water inlet are on the same circumference of the inner peripheral wall of the washing tub, and the partial guiding unit extends from the water inlet to the circumferential direction of the dewatering rotation of the washing tub. , the distance from the center of the washing tub is gradually reduced.
The washing machine according to claim 10, wherein the guiding unit comprises a curved surface structure which is disposed in the circumferential direction of the inner wall of the washing tub and which is gradually changed from the center of the washing tub, and one end of the adjacent water inlet and the center of the washing tub The distance is the largest, extending in the direction of dehydration of the washing tub, and the further away from the water inlet, the smaller the distance between the guiding unit and the center of the washing tub;

Preferably, the method further comprises an inclined structure which is disposed from the bottom to the upper direction of the washing tub and which gradually becomes larger from the center of the washing tub.
The washing machine according to any one of claims 9-11, wherein the guiding unit is an auxiliary structure installed on a peripheral wall of the washing tub, or a pressure of the peripheral wall of the washing tub at least on the circumference of the water inlet of the water guiding passage. Type structure.