JP7319290B2 - washing machine - Google Patents

Description

The present invention belongs to the field of washing appliances, and in particular to washing machines.

A washing machine is designed as a device that uses electricity to wash clothes. Generally, a washing machine includes a tub for storing washing water, a rotating tub rotatably mounted inside the tub, a pulsator rotatably mounted at the bottom of the rotating tub, and rotating the rotating tub and the pulsator. and a balancing ring provided above the rotatable tub to compensate for weight and maintain balance as the rotatable tub rotates. When the rotary tub and the pulsator rotate while the clothes and the detergent are put into the rotary tub, the pulsator agitates the wash water together with the clothes put into the rotary tub, thereby removing stains from the clothes.

To increase the washing capacity of a washing machine, a larger rotating tub is required. That is, it is necessary to increase the height or diameter of the rotating tub. Also, if the rotating tub has a larger size, the tub that accommodates the rotating tub and the housing that accommodates the tub also need to be enlarged as the rotating tub expands. However, the expansion of the housing corresponding to the external appearance of the washing machine is greatly restricted by the space of the installation area of the washing machine. In general users' homes, the installation position of the washing machine is limited, so it is not very realistic to expand the housing of the washing machine to increase the capacity of the washing tub. Therefore, how to increase the capacity of the rotating tub without enlarging the housing of the washing machine has been a big problem for designers. However, the problem of increased capacity has been solved with the advent of non-perforated cleaning tanks. Non-perforated wash tanks are arranged by omitting or reducing the size of the tank and using a rotating tank as the wash tank to store the wash water.

When the washing tank rotates at high speed, the water in the washing tank moves upward along the wall of the washing tank due to the action of centrifugal force, rises to the drain port provided at the upper end, and is discharged. At this time, part of the water continues to rise up to the connection point of the balancing ring and overflows the washing tank through the connection point of the balancing ring. The overflowing cleaning water can easily corrode the housing of the housing and short-circuit the circuit. In addition, even if the balance ring portion is sealed, it is not possible to discharge the wash water that has risen above the drain port, which reduces the drain speed and dehydration efficiency.

In view of the above, the present invention is proposed.

A technical problem to be solved by the present invention is to eliminate the defects of the prior art and to provide a washing machine capable of improving the drainage speed and dehydration efficiency.

In order to solve the above technical problems, the basic idea of the technical solution adopted in the present invention is as follows. That is, the washing machine includes a housing and a washing tub rotatably installed in the housing. The washing tank is arranged as a tank body structure for storing water during washing. The peripheral wall of the cleaning tank is provided with a water guide path for guiding and discharging the cleaning water from top to bottom. The upper end of the water guide path serves as a water inlet end, and has a water inlet that communicates with the inside of the cleaning tank. In the upper part of the washing tank, there is further a water collection guide structure that collects the washing water that has risen due to the action of centrifugal force, guides it to the water inlet, makes it enter the water guide path, and discharges it to the outside of the washing tank. is provided.

Further, the water collecting and guiding structure includes a water stopping unit that prevents washing water from rising further along the inner peripheral wall of the washing tank. The lower surface of the water stop unit facing the bottom of the washing tank serves as a water stop end face that prevents water from rising. The water stop end face defines a water conduit that guides wash water to enter the water conduit along the circumferential direction.

Further, the water stop end surface includes at least one circumferentially inclined surface that gradually changes along the circumferential direction.

Preferably, the distance between the circumferentially inclined surface and the bottom of the washing tank gradually increases along the circumferential direction, and the water inlet is located at the point where the distance between the circumferentially inclined surface and the bottom of the washing tank is maximum. placed in close proximity.

More preferably, the upper edge of the inlet is in contact with the position of the circumferentially inclined surface where the distance from the bottom of the washing tank is maximum.

Further, the water stop end surface includes a radially inclined surface that is radially inclined from the center toward the outer periphery. Preferably, the radially inclined surface gradually increases in distance from the bottom of the cleaning tank toward the outer circumference along the radial direction.

Further, the water shut-off unit alone or in combination with the inner peripheral wall of the washing tank forms an annular collecting tank. The opening of the collection tank faces downward, and the bottom of the tank constitutes a cut-off end face that prevents water from rising. Also, the water inlet is provided in the water collection tank.

In addition, a balance ring is provided at the upper end of the cleaning tank, and the balance ring and the cleaning tank are mounted in a sealed manner. The balancing ring constitutes the water stop unit. Preferably, a water collecting tank is provided under the balance ring, or the water collecting tank is formed by combining the balance ring and the inner peripheral wall of the cleaning tank.

Alternatively, the inner peripheral wall of the upper portion of the cleaning tank is provided with an annular water stop rib protruding from the surface of the inner peripheral wall along the circumference, and the annular water stop rib constitutes the water stop unit.

Alternatively, the washing tank has a constricted structure at an upper opening, and the water stop end face is formed by a lateral wall that bends from the upper end of the peripheral wall toward the center.

Further, the water collecting and guiding structure includes a guide unit that guides the wash water, which has risen to a height where the inlet of the water guide path is located, along the circumferential direction to the inlet.

Furthermore, at least part of the guide unit and the water inlet are located on the same circumference of the inner peripheral wall of the washing tank. The guide unit in this portion extends from the water inlet along the circumferential direction of the washing tank during dehydration rotation, and the distance from the center of the washing tank gradually decreases.

Further, the guide unit includes a curved surface structure that is provided along the circumferential direction on the inner peripheral wall of the cleaning tank and whose size from the center of the cleaning tank changes gradually. The curved surface structure maximizes the distance between the one end adjacent to the water inlet and the center of the washing tank. In addition, it extends along the direction of rotation of the washing tank during dehydration, and the distance between the guide unit and the center of the washing tank decreases as the distance from the water inlet increases.

Preferably, it further includes an inclined structure that is provided from bottom to top along the axial direction of the cleaning tank and whose size from the center of the cleaning tank gradually increases.

Further, the guide unit is an auxiliary structure mounted on the inner peripheral wall of the washing tank, or a pressing structure on the circumference of the peripheral wall of the washing tank where at least the inlet of the water guide path is located.

Further, the water guide path is mounted inside the cleaning tank, and the water inlet is provided in a side wall corresponding to the radial direction of the cleaning tank in the upper portion of the water guide path. The water conduit defines a water conduit chamber from top to bottom. The water inside the cleaning tank enters the water introduction chamber from the water inlet along the circumferential direction of the cleaning tank. The lower part of the water introduction chamber communicates with the drain port of the peripheral wall and/or the bottom wall of the washing tank.

Preferably, the water inlet is provided in a side wall of the water guide path extending in a radial direction that coincides with the direction of rotation of the washing tank during dehydration. The opening direction of the water inlet faces the direction of rotation of the washing tank during dehydration.

Alternatively, the water conduit is attached to the exterior of the washing tank and defines a water conduit chamber extending from top to bottom. A side wall forming the water introduction chamber and near the center of the cleaning tank is provided with a water inlet that communicates with the inside of the cleaning tank along the radial direction. The water inside the cleaning tank enters the water introduction chamber from the water inlet along the radial direction of the cleaning tank. In addition, a spout is provided at the bottom of the water supply chamber.

Furthermore, the water conduit has an independent structure and has the water conduit chamber therein. Alternatively, the water guide path has a cover body structure, and is covered with and combined with the peripheral wall of the cleaning tank to form the water guide chamber.

The washing machine of the present invention further includes a water receiving device provided within the housing for collecting water discharged from the washing tub. The water receiving device includes a water collection chamber and a drainage member for draining water to the exterior of the washing machine. A spout for the water that the conduit discharges downward is located in the catchment chamber.

By using the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

Since the washing tub of the washing machine according to the present invention can be used to store water during the washing process, the washing tub adopts a "cleaning tub without holes" structure. In addition, the design of the outer tank is omitted, and a water receiving device is used instead of the outer tank for receiving and draining water. Accordingly, the present invention has the following technical effects.

1. Since the capacity of the washing tub can be increased without changing the volume of the housing of the washing machine, the effect of increasing the capacity of the washing machine is realized.

2. During the washing process, water exists only in the washing tank, so water exists between the inner and outer tanks like in a conventional washing machine, causing dirt and grime to build up on the inner wall of the outer tank and the outer wall of the washing tank. The problem of "adhering" is avoided. Therefore, it has a better cleaning effect.

3. By omitting the outer tank and using the washing tank as a water storage tank, water does not exist between the inner tank and the outer tank during the washing process, so the amount of washing water is reduced and the amount of washing water is saved. .

4. By draining water from a drainage port located at the bottom of the peripheral wall of the cleaning tank using a water guiding path from top to bottom inside the cleaning tank, it is possible to obtain a better effect of increasing the capacity.

5. By using the water collecting guide structure mounted on the upper part of the washing tank, the washing water can be quickly guided into the water guiding path, thereby improving the drainage speed and the dehydration efficiency.

6. The guide unit of the present invention has a simple structure and is easy to mount. Also, the mounting cost is saved without affecting the capacity increase.

Specific embodiments of the present invention will be described in more detail below in combination with the drawings.

The drawings are part of the invention and are used for a further understanding of the invention. Also, the schematic embodiments of the invention and their descriptions are used for the interpretation of the invention, but do not unduly limit the invention. It should be understood that the drawings described below are only part of the examples, and those skilled in the art can derive further drawings from these drawings without creative effort.

FIG. 1 is a diagram showing the structure of the washing machine of the present invention. FIG. 2 is a diagram showing the structure of a water stop unit according to the present invention. FIG. 3 is a diagram showing the structure of another water stop unit according to the present invention. FIG. 4 is a diagram showing an embodiment of a water stop unit according to the present invention. FIG. 5 is a diagram showing another embodiment of the water stop unit in the present invention. FIG. 6 is a diagram showing another embodiment of the water stop unit in the present invention. FIG. 7 is an enlarged view of part A in FIG. FIG. 8 is a diagram showing another embodiment of the water stop unit in the present invention. FIG. 9 is an enlarged view of part B of FIG. FIG. 10 is a diagram showing the structure of the guide unit in the present invention.

It should be noted that these drawings and written description are not intended to limit the scope of the inventive concept in any way, but rather to explain the inventive concepts to those skilled in the art with reference to specific embodiments. It is.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments will be described clearly and concisely in combination with the drawings of the embodiments of the present invention. It should be noted that the following examples are for the purpose of explaining the present invention, and do not limit the scope of the present invention.

In the description of the present invention, terms such as "top", "bottom", "front", "back", "left", "right", "vertical", "inside", "outside", etc. should be explained. The direction or positional relationship indicated by is the direction or positional relationship based on the illustration, and is only for the convenience and simplification of the description of the present invention, and the target device or member is in a specific direction. It does not express or imply that it has and must be configured and operated in a particular direction. As such, it should not be construed as limiting the invention.

In the description of the present invention, the terms "attached", "connected", and "connected" should be interpreted broadly, unless explicitly defined and limited otherwise. For example, it may be a fixed connection, a removable connection, or an integral connection. Moreover, it may be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to specific situations.

As shown in FIGS. 1 to 10, the washing machine of the present invention includes a housing 1 and a washing tub 2 rotatably installed in the housing. The washing tank 2 is arranged as a tank body structure for storing water during washing. The peripheral wall of the cleaning tank 2 is provided with a water guide path 4 for guiding and discharging the cleaning water from top to bottom. The upper end of the water guide path 4 serves as a water inlet end, and has a water inlet 41 that communicates with the inside of the cleaning tank. In the upper part of the cleaning tank 2, the cleaning water that has risen due to the action of centrifugal force is collected, guided to the water inlet 41, introduced into the water guide path 4, and discharged to the outside of the cleaning tank 2. A water collecting and guiding structure 3 is provided. The water conduit 4 described in the present invention has an independent structure and has the water conduit chamber 42 therein. Alternatively, the water guide path 4 has a cover body structure, and is covered with the peripheral wall of the cleaning tank 2 and combined to form the water guide chamber 42 . The water guiding path 4 may be installed on the inner peripheral wall of the cleaning tank 2 or may be installed on the outer peripheral wall of the cleaning tank 2 .

The washing machine of the present invention further includes a water receiving device 6 provided within the housing 1 for collecting water discharged from the washing tub 2 . The water receiving device 6 includes a water collection chamber 61 and a drainage member 62 for draining water to the outside of the washing machine. The water discharged downward through the water guide path 4 is collected in the water collecting chamber 61 and then discharged outside by the drain member 62 .

Specifically, in the washing stage, the washing water soaks and cleans the clothes inside the washing tank 2 . Further, when the washing machine is spin-drying, the washing tub 2 rotates, so that the water guiding path 4 also rotates together with the washing tub 2 . At this time, the liquid in the cleaning tank 2 moves from bottom to top due to the action of centrifugal force and rises to a certain height. Then, it enters from the water inlet 41 into the water guide chamber 42 while being blocked and guided by the water collection guide structure 3 . The liquid that has entered the water guide chamber 42 is drained downward into the water receiving device 6 through the water guide path 4 and then drained outside by the drain member 62 .

As shown in FIGS. 1 to 9, the water collecting and guiding structure 3 described in this embodiment includes a water stop unit 31 that prevents washing water from rising further along the inner peripheral wall of the washing tank. The lower surface of the water stop unit 31 facing the bottom of the washing tank is a water stop end surface 310 that prevents water from rising. The water cut-off end surface 310 defines a water conduit that guides the washing water to flow in the circumferential direction of the washing tank and enter the water conduit.

Furthermore, the water stop end surface 310 includes at least one circumferentially inclined surface 3101 that gradually changes along the circumferential direction (see FIG. 2). The distance between the circumferentially inclined surface 3101 and the bottom of the cleaning tank gradually increases along the circumferential direction. It is installed close to the maximum point. Preferably, the upper edge of the water inlet 41 is in contact with the position of the circumferential inclined surface 3101 where the distance from the bottom of the cleaning tank is maximum.

When installing at least two water guiding paths in the washing tank, the water stop end surface 310 includes at least two circumferentially inclined surfaces 3101 that gradually change along the circumferential direction. The circumferential inclined surface 3101 extends from the radial side wall of one water guide path to the water inlet of the other water guide path while gradually changing. The rules for the gradual change of each circumferential inclined surface 3101 are all the same. Since the direction of water flow on the circumference is opposite to the direction of rotation of the cleaning tank during dehydration, the circumferential inclined surface 3101 extends in the same direction as the direction of rotation of the cleaning tank during dehydration (clockwise or counterclockwise). That is, the circumferential inclined surface 3101 is designed so that the distance from the bottom of the washing tank gradually decreases in the direction opposite to the flow direction of the water flow on the circumference.

and/or the water stop end surface 310 includes a radially inclined surface 3102 that slopes radially from the center toward the outer periphery (see FIG. 3). Preferably, the radially inclined surface 3102 gradually increases in distance from the bottom of the cleaning tank toward the outer circumference along the radial direction. That is, the radially inclined surface 3102 is inclined downward from the outside to the inside along the radial direction. The water inlet 41 is installed at a position close to the outer periphery of the radially inclined surface 3102 and closest to the inner peripheral wall of the cleaning tank 2 .

During the dehydration stage, the washing tank 2 rotates at high speed, and the wash water rises along the peripheral wall of the washing tank. Therefore, if the water stop end surface of the water stop unit 31 were flat after rising until it was blocked by the water stop unit 31, the water flow would become almost stationary after being blocked, or move along the circumference at a low speed. It will rotate and the drainage speed will be severely affected. On the other hand, in the present invention, the water stop end surface 310 is formed as a radially and/or circumferentially inclined surface so that the stability of the flow state of the water stream is broken, and the wash water can quickly flow into the water guide path 4. invite.

As shown in FIGS. 4 to 9 showing the water stop unit described in the present invention, the water stop unit 31 of the present invention has an annular water stop rib structure that is mounted alone on the upper part of the inner peripheral wall of the cleaning tank 2. (see FIG. 5). An annular water stop rib 311 protrudes from the surface of the inner peripheral wall along the circumference of the cleaning tank 2 .

Alternatively, the water stop unit 31 has a balance ring structure installed at the upper end of the washing tank 2 . The balance ring 5 and the cleaning tank 2 are hermetically mounted, and the lower surface of the balance ring 5 constitutes a water stop end surface 310 (see FIGS. 6 and 7).

Alternatively, the cleaning tank 2 has a constricted structure at an upper opening, and the water stop end surface 310 is constituted by a lateral wall 312 that bends from the upper end of the peripheral wall toward the center (see FIGS. 8 and 9). reference).

In addition, the water stopping unit 31 alone or combined with the inner peripheral wall of the washing tank 2 forms an annular collecting tank 313 (see FIG. 4) so as to have a better water stopping and water conducting function. The opening of the collection tank 313 faces downward, and the bottom of the tank constitutes a water stop end surface 310 that prevents the water from rising. In addition, a water inlet 41 for the water conduit 4 is provided inside the water collection tank 313 .

Corresponding to the water stop unit 31 described above, the annular water stop rib 311 itself has a collection tank 313 . In addition, the balance ring 5 is provided with a water collection tank at its lower portion, or a water collection tank 313 is formed by combining the balance ring 5 and the inner peripheral wall of the cleaning tank 2 (see FIG. 7). A collection tank 313 is formed by combining the lateral wall 312 of the constriction structure of the washing tank, the inner peripheral wall of the washing tank 2 and the annular projecting rib 51 at the bottom of the balance ring 5 (see FIG. 9).

As shown in FIG. 10, the water collection guide structure 3 described in the present invention includes a guide unit 32 that guides the wash water, which has risen to the height at which the water inlet 41 of the water conduit is located, along the circumferential direction to the water inlet. .

Furthermore, at least part of the guide unit 32 and the water inlet 41 are positioned on the same circumference of the inner peripheral wall of the cleaning tank 2 . The guide unit 32 in this portion extends from the water inlet 41 along the circumferential direction of the washing tank 2 during dehydration rotation, and the distance from the center O of the washing tank gradually decreases.

Further, the guide unit 32 includes a curved surface structure 320 that is provided along the circumferential direction on the inner peripheral wall of the cleaning tank and whose size from the center of the cleaning tank changes gradually. The curved surface structure 320 has the maximum distance D between one end adjacent to the water inlet 41 and the center O of the cleaning tank. Further, it extends along the direction of rotation of the cleaning tank during dehydration, and the distance d between the guide unit 32 and the center O of the cleaning tank decreases as the distance from the water inlet 41 increases.

When installing at least two water guiding paths 4 in the cleaning tank 2, the guiding unit 32 includes at least two curved structures 320 that gradually change along the circumferential direction. The curved structure 320 extends from the radial side wall of one water conduit to the inlet of the other water conduit with a gradual change. The rules for the gradual change of each curved structure 320 are the same.

Preferably, the guide unit 32 is provided from bottom to top along the axial direction of the cleaning tank 2 and further includes an inclined structure whose size from the center O of the cleaning tank gradually increases (not shown). Optimally, the washing tank 2 has a constant taper, the upper end of the washing tank being larger in diameter than the lower end. As a result, when the cleaning tank 2 rotates at high speed, the cleaning water in the cleaning tank 2 can easily rise along the inner peripheral wall of the cleaning tank by the action of centrifugal force.

The guide unit 32 described in the present invention is an auxiliary structure attached to the inner peripheral wall of the cleaning tank 2 . Alternatively, the guide unit 32 is a pressing structure on the circumference of the peripheral wall of the washing tank 2 where at least the water inlet 41 of the water guide path is located.

As shown in FIG. 4, the water guide path 4 described in this embodiment is mounted inside the cleaning tank 2, and the water inlet 41 is provided in the upper part of the water guide path 4 in the side wall corresponding to the radial direction of the cleaning tank. ing. The water conduit 4 defines a water conduit chamber 42 extending downward. The water inside the cleaning tank 2 enters the water introduction chamber 42 from the water inlet 41 along the circumferential direction of the cleaning tank. The lower part of the water guide chamber 42 communicates with the drain port 21 on the peripheral wall and/or the bottom wall of the cleaning tank. The drain port 21 in this embodiment is provided in the lower part of the peripheral wall of the cleaning tank. Furthermore, by providing a drainage path for conducting water downward from the drainage port 21 on the outer tank wall of the cleaning tank, scattering of the drainage from the drainage port may be prevented.

Preferably, the water inlet 41 is provided in a radial side wall of the water guide path 4 that coincides with the direction of rotation of the washing tank 2 during dehydration. The opening direction of the water inlet faces the direction of rotation of the washing tank 2 during dehydration.

Alternatively, as shown in FIG. 5, the water conduit 4 is mounted outside the cleaning tank 2 to define a water conduit chamber 42 extending from top to bottom. A water inlet 41 communicating with the inside of the cleaning tank along the radial direction is provided in a side wall forming the water introduction chamber 42 and near the center of the cleaning tank. The water inside the cleaning tank 2 enters the water introduction chamber 42 from the water inlet 41 along the radial direction of the cleaning tank. In addition, a water discharge port 43 is provided at the lower portion of the water guide chamber 42 .

The water conduit 4 described in the present invention may be mounted independently on the peripheral wall of the cleaning tank and may have a structure in which the water conduit chamber 42 is provided inside. The water guide chamber 42 may be formed by covering and combining with the peripheral wall.

In the case of a structure in which the water guide path 4 is independently attached to the outer peripheral wall of the cleaning tank, the water inlet 41 is an opening facing the side wall of the cleaning tank at the upper end of the water guide path 4, and the water is drained to the upper part of the peripheral wall of the cleaning tank 2. A mouth 21 is provided (see FIG. 5).

In the case of a cover body structure in which the water guide path 4 is attached to the outer peripheral wall of the cleaning tank, the water inlet 41 on the side wall that constitutes the water guide chamber 42 and is near the center of the cleaning tank is at the upper part of the peripheral wall of the cleaning tank 2. It becomes the drain port 21 .

In order to enhance the drainage effect of the washing machine, a plurality of drain ports 21 are provided, and the plurality of drain ports 21 are arranged at regular intervals in the circumferential direction of the washing tub 2 . In addition, a plurality of water conveying paths 4 are provided, and the plurality of water conveying paths 4 are arranged at intervals in the circumferential direction of the cleaning tank 2 . Each water conduit 4 covers at least one corresponding outlet 21 . For example, there are two drain ports 21 and they are arranged so as to face each other in the radial direction of the cleaning tank 2 . Also, two water guiding paths 4 are provided, which are arranged so as to face each other in the radial direction of the cleaning tank 2 . The two water guide paths 4 cover the two drain ports 21 in one-to-one correspondence (see FIGS. 4 and 5).

The washing machine of the above embodiment of the present invention employs a single tub structure. That is, only the washing tank 2 is installed without separately providing a water tank. As a result, since water exists in the cleaning tank 2 during cleaning, water is further saved. In addition, a water guide path 4 is further installed on the inner peripheral wall of the cleaning tank 2 . A water inlet 41 is provided in the water guiding path 4 , and a drain 21 is provided in the lower portion and/or the bottom wall of the peripheral wall of the cleaning tank 2 . During dehydration, the water in the washing tank 2 rises due to centrifugal force and enters the water conduit 4 through the water inlet 41 . Then, it is guided by the water guide path 4 and flows downward to the drain port 21 and is discharged from the drain port 21 . By omitting the water tank in this way, the structure is simplified, the capacity is increased, and the propagation of dirt and bacteria is reduced. Moreover, it is possible to enhance the dehydration effect while saving water.

In addition, by installing the water guide path 4 inside the cleaning tank 2, there is no need to consider the collision interval that needs to be enlarged when installing other structures between the housing 1 and the cleaning tank. As a result, the volume of the cleaning tank can be relatively increased while keeping the volume of the housing constant, so that the effect of increasing the capacity is improved.

The drain port 21 may be provided on the peripheral wall of the cleaning tank 2 or may be provided on the bottom wall of the cleaning tank 2 . Alternatively, the drain port 21 is provided on the peripheral wall and the bottom wall. Specifically, the drain port 21 is provided on the peripheral wall of the cleaning tank 2 . As a result, the water guide path 4 covers the drain port 21 . Moreover, since the lower end of the water guide path 4 is connected only to the peripheral wall of the cleaning tank 2, it is convenient to seal the water guide path 4 and the peripheral wall of the cleaning tank 2 together. Needless to say, the drain port 21 in the present invention may be provided in the bottom wall of the washing tank 2 and the water conduit 4 may be extended downward to communicate with the drain port 21 . This is advantageous for improving the dehydration efficiency during dehydration, resulting in a good dehydration effect and also effectively reducing splashing of water from the drain port 21 . Further, when the drain port 21 is provided on the peripheral wall and the bottom wall, it is convenient not only for sealing the water guide path 4 and the peripheral wall of the washing tank 2, but also for improving the dehydration efficiency during dehydration. Become. Moreover, splashing of water from the drain port 21 can be effectively prevented.

The foregoing are merely preferred embodiments of the invention and are not intended to limit the invention in any form. Although the present invention has been disclosed above through preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, slight variations or supplements that can be implemented by those skilled in the art using the technical content presented above are regarded as equally modified equivalent embodiments, and any It does not deviate from the content of the technical plan. In addition, any simple modifications, equivalent variations and supplements added to the above embodiments based on the technical essence of the present invention are all considered within the scope of the present invention.

Claims (8)

A washing machine comprising a housing and a washing tub rotatably installed in the housing,
The cleaning tank is arranged as a tank body structure for storing water during cleaning, and a water guide path for guiding and discharging the cleaning water from top to bottom is provided in the peripheral wall of the cleaning tank, and the upper end of the water guide path. is a water inlet end, and has a water inlet communicating with the inside of the washing tank. Above the washing tank, there is a collection of washing water that has risen due to the action of centrifugal force and flows into the water inlet. a water collection guide structure is provided to guide the water into the water guide path and discharge it to the outside of the cleaning tank,
The water collection guide structure includes a water stop unit that prevents washing water from rising further along the inner peripheral wall of the washing tank, and the lower surface of the water stop unit facing the bottom of the washing tank a water stop end face that prevents rising, the water stop end face defining a water conduit that guides wash water to enter the water conduit along the circumferential direction;
The water stop end surface includes at least one circumferentially inclined surface, the distance between the circumferentially inclined surface and the bottom of the cleaning tank gradually increases along the circumferential direction, is installed close to a portion of the circumferentially inclined surface where the distance between the directionally inclined surface and the bottom of the cleaning tank is maximum,
The water collection guide structure further includes a guide unit that guides the wash water, which has risen to a height at which the water inlet of the water guide path is located, along the circumferential direction to the water inlet,
The guide unit includes a plurality of curved surface structures extending in the circumferential direction on the inner peripheral wall of the cleaning tank and gradually varying in distance from the center of the cleaning tank, and is adjacent to the water inlet. The distance between one end of the curved structure and the center of the washing tank is maximum and extends along the direction of rotation of the washing tank during dehydration, and the other end of the curved structure away from the water inlet and the The distance to the center of the cleaning tank is minimized,
The plurality of curved structures are arranged along the circumferential direction on the inner peripheral wall of the cleaning tank, and a step is formed between one end of the curved structure and the other end of the adjacent curved structure. , the washing machine, wherein the water inlet is positioned at the stepped portion . 2. The washing machine according to claim 1, wherein the upper edge of said inlet is in contact with said circumferentially inclined surface at which the distance from the bottom of said washing tub is maximum. The water stop end surface includes a radially inclined surface, and the radially inclined surface gradually increases in distance from the bottom of the cleaning tank toward the outer periphery along the radial direction. The washing machine according to claim 1 or 2. The water stop unit is alone or combined with the inner peripheral wall of the washing tank to form an annular water collecting tank, the opening of the water collecting tank is directed downward, and the bottom of the annular water collecting tank is filled with water. The washing machine according to any one of claims 1 to 3, characterized in that the water stop end face that prevents rising is formed, and the water inlet is arranged in the water collection tank. A balance ring is provided at the upper end of the cleaning tank, the balance ring and the cleaning tank are mounted in a sealed manner, and the balance ring constitutes the water stop unit. 5. The washing machine according to any one of 4. An annular water stop rib protruding from the surface of the inner peripheral wall along the circumference is attached to the inner peripheral wall of the upper part of the cleaning tank, and the annular water stop rib extends from the inner peripheral wall of the upper part of the cleaning tank. The washing machine according to any one of claims 1 to 4, wherein the annular water stop rib protruding toward the center of the washing tub constitutes the water stop unit. The washing tank has a constricted structure at an upper opening, and the water stop end face is formed by a lateral wall that bends from the upper end of the peripheral wall toward the center. or the washing machine according to item 1. The guide unit is an auxiliary structure attached to the inner peripheral wall of the cleaning tank, or a pressing structure on the circumference of the peripheral wall of the cleaning tank where at least the water inlet of the water guide path is located. A washing machine according to claim 1 , characterized in that.