JP7599498B2 - Drum washing machine - Google Patents

Description

The present invention belongs to the field of household electrical appliances, and specifically relates to drum washing machines.

In the prior art, a drum washing machine typically includes a sealed outer tub that contains water, and an inner washing tub that communicates with the outer tub. The washing capacity is based on the inner tub, but this design not only limits the volume of the inner tub, but also makes it difficult to clean as dirt easily accumulates between the inner tub and the outer tub. In response to the above issues, engineers have creatively proposed the idea of designing the inner tub as a sealed container.

Patent Document 1 discloses a drum washing machine including a main body, a door body, and an inner tub. The inner tub is rotatably installed in the main body. The inner tub holds water during the washing process. The washing machine further includes a support base. The support base is attached to the main body via a vibration control device. An open storage space is provided in the support base, and the bottom of the inner tub is installed in the storage space of the support base. The central rotation shaft is rotatably supported by the bottom wall of the support base. This invention realizes the water storage function of the inner tub without interfering with the washing and spin-drying functions caused by the rotation of the inner tub. In addition, by using a support base instead of the conventional outer tub, which occupies a large volume, the capacity of the inner tub is increased.

However, in the above-mentioned Patent Document 1, the wastewater is likely to splash onto the side walls and bottom wall of the inner tank during the draining process, contaminating the wall surface of the inner tank. In view of the above, the present invention is proposed.

Chinese Patent Application No. 2017103201913

The technical problem that this invention aims to solve is to provide a drum washing machine that eliminates the deficiencies of the conventional technology.

To solve the above technical problems, the basic concept of the technical solution adopted in this invention is as follows:

The drum washing machine includes an inner tub that holds wash water independently during washing, and a water collecting device having a storage chamber that opens to the inner tub side, and the inner tub is installed in the storage chamber. A water receiving groove is installed in the bottom wall of the storage chamber, and the discharge water flow from the inner tub is discharged into the water receiving groove.

The water collecting device further includes a bottom wall and a side wall. The bottom wall is arranged coaxially with the inner tank, and the side wall is arranged on the periphery of the bottom wall, extends toward the inner tank, and is arranged annularly on the outside of the inner tank.

The water receiving groove is recessed in a direction away from the inner tank and is installed in a ring shape on the bottom wall.

Furthermore, the water receiving groove includes a first side wall, a second side wall, and a groove bottom wall.

The bottom wall of the groove and the bottom wall of the inner tank are installed in parallel. The first side wall is formed by folding back the edge of the bottom wall in a direction away from the inner tank and is connected to the bottom wall of the groove. The second side wall is connected to the bottom wall of the groove and the side wall of the water collecting device, respectively.

Preferably, the water receiving groove and the bottom wall are molded integrally.

Furthermore, the water receiving groove includes a first side wall, a second side wall, and a groove bottom wall.

The first side wall is connected to the edge of the bottom wall of the water collecting device and extends away from the inner tank.

The second side wall is connected to the side wall of the water collecting device and extends in a direction adjacent to the inner tank.

The bottom wall of the groove is connected to the first side wall and the second side wall, respectively.

The water receiving groove is integrally molded and fixedly connected to the bottom and side walls of the water collecting device.

Preferably, the water receiving groove and the water collecting device are connected by welding, screw connection, riveting or insertion.

Furthermore, the water receiving groove is a groove that surrounds the bottom wall of the water collecting device in the circumferential direction.

Furthermore, it includes a water collection device drain opening that is opened in the side wall of the water collection device located at the bottom of the inner tank.

The side wall between the outer edge of the water collecting device outlet and the water receiving groove, and the side wall between the outer edge of the water collecting device outlet and the outer edge of the side wall of the water collecting device are both installed at an incline, and the water collecting device outlet is located at the lowest position of the inclined side wall.

Furthermore, it includes a water stop ring that is annularly installed on the outer edge of the side wall of the water collecting device.

The side wall between the outer edge of the water collecting device outlet and the water receiving groove, and the side wall between the outer edge of the water collecting device outlet and the water stop ring are both installed at an incline, and the water collecting device outlet is located at the lowest position of the inclined side wall.

Furthermore, the water discharge guide structure is connected to the inner tank and guides the discharge water flow from the inner tank.

The drainage end of the water outlet guide structure extends into the water receiving groove.

Furthermore, the inner tank includes an inner tank bottom wall and an inner tank side wall.

A water outlet is provided in the side wall of the inner tank, and a water outlet device is installed in the water outlet. The water outlet guide structure is installed on the outer wall of the side wall of the inner tank, with one end fixed to the water outlet and the other end extending toward the bottom wall of the inner tank. The drainage end of the water outlet guide structure extends into the water receiving groove.

Furthermore, the inner tank includes an inner tank bottom wall and an inner tank side wall.

The water discharge guide structure is installed on the inner wall of the inner tank side wall. The water discharge guide structure is a guide flow path that extends toward the bottom wall of the inner tank and communicates with the outside of the inner tank. The water discharge guide structure has a water discharge port that connects the inner tank with the guide flow path, and a water discharge device is installed in the water discharge port.

By using the above technical solution, the present invention has the following beneficial effects compared to the prior art:

1) In this invention, the capacity of the inner tank is increased by omitting the outer tank structure. In addition, by installing a water discharge guide structure on the inner tank wall, the discharge water flow from the inner tank is guided directly to the rear of the inner tank bottom wall. This reduces the splashing of the discharge water flow onto the inner tank wall and reduces contamination of the tank wall, so the tank wall is kept clean and the cleaning effect is improved. Furthermore, if the water discharge guide structure is installed so that it can be removed, the difficulty of cleaning is also reduced.

2) In the present invention, by installing a water collecting device and further installing a water receiving groove within the water collecting device, the discharged water flow from the inner tank can be focused within the water receiving groove, which further reduces the scattering of the discharged water flow against the wall surface of the inner tank. In addition, the focusing effect of the water receiving groove improves the discharge efficiency of the discharged water flow.

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

The drawings are used as part of the present invention for further understanding of the present invention. Furthermore, the schematic embodiments of the present invention and their explanations are used for interpreting the present invention, but do not unduly limit the present invention. Needless to say, the drawings described below are only a part of the embodiments, and a person skilled in the art can derive further drawings from these drawings without requiring creative labor.

FIG. 1 is a schematic diagram of a washing machine according to the present invention. FIG. 2 is a schematic structural diagram of the cross section taken along line AA in FIG. FIG. 3 is a schematic diagram of an enlarged structure of part B in FIG. 2 of the present invention. FIG. 4 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. FIG. 5 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. FIG. 6 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. FIG. 7 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. FIG. 8 is a schematic structural diagram of a part of the inside of the lifting rib in FIG. 1 of the present invention. FIG. 9 is an enlarged view of the structure of the water receiving groove portion in FIG. 2 of the present invention.

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

In order to clarify the purpose, technical solution and advantages of the embodiments of the present invention, the following will clearly and concisely describe the technical solution of the embodiments in combination with the drawings of the embodiments of the present invention. Note that the following embodiments are for the purpose of explaining the present invention and are not intended to limit the scope of the present invention.

In describing the present invention, it should be explained that the directions or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "inner," and "outer" are directions or positional relationships based on the illustrations, and are merely for the convenience and simplification of the description of the present invention, and do not expressly or imply that the subject devices or components have a specific orientation and must be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

In describing the present invention, the terms "attach," "connect," and "connect" should be interpreted broadly unless otherwise clearly defined and limited as a point to be explained. For example, it may be a fixed connection, a removable connection, or an integral connection. It may also be a mechanical connection or an electrical connection. Furthermore, it may be a direct connection or an indirect connection via an intermediate medium. A person skilled in the art can interpret the specific meaning of the above terms in the present invention according to the specific situation.

As shown in Figures 1 and 2, the drum washing machine of the present invention includes a housing 100, a main body door 120, a controller 300, an inner tub 410, a water collecting device 420, and a drainage device 800. Compared to conventional washing machines, the drum washing machine of the present invention omits the outer tub, and uses a water collecting device to collect the discharged water flow from the inner tub and guide it to the drainage device. This is advantageous for increasing the capacity of the inner tub 410, and improves the utilization rate of the inner tub of the washing machine.

The inner tub 410 in the present invention is a sealed container that contains washing water independently during washing. It also includes an inner tub bottom wall 417, an inner tub side wall 416, and an inner tub door 411. The inner tub door 411 is installed in the inner tub so that it can be opened and closed, making it easy for the user to put in and take out clothes. A water discharge device including a lifting rib 412 and a seal valve 413 (see FIG. 8) is installed in the inner tub 410. The lifting rib 412 has a water passage hole. The seal valve 413 is also installed in the water discharge port 415 so that it can be opened and closed. When the inner tub 410 is dehydrated, the seal valve 413 is opened by the action of centrifugal force, so that the water discharge port 415 communicates with the inner tub 410, and the discharged water flow from the inner tub flows out through the water discharge port 413.

The system further includes a water discharge guide structure 414 to facilitate guiding the discharge water flow from the inner tank 410 into the water collection device 420. The water discharge guide structure 414 is connected to the inner tank 410 and discharges the discharge water flow from the inner tank 410 directly into the water collection device 420. This reduces the splashing of the discharge water flow against the wall surface of the inner tank and reduces contamination of the inner tank wall surface.

The water discharge guide structure 414 is installed on the inner tank side wall 416 and has a guide portion that extends in the axial direction of the inner tank.

The water discharge guide structure 414 in this embodiment is installed on the outer wall of the inner tank side wall 416, and has little impact on the conventional structure of the inner tank 410. The water discharge guide structure 414 can be directly attached to the inner tank side wall 416 as an external member, making it easy to operate and reducing installation costs.

As shown in Figures 3 and 4, a water outlet 415 is provided in the inner tank side wall 416. The water outlet device (see Figure 8) installed at the water outlet 415 is omitted from the figures. The water outlet guide structure 414 is installed on the outer wall of the inner tank side wall 416. The guide portion is fixed to the water outlet 415 portion, and allows the discharge water flow from the inner tank 410 that flows out from the water outlet 415 to enter directly into the water outlet guide structure 414. The other end of the guide portion extends toward the inner tank bottom wall 417 and extends to the rear of the inner tank bottom wall 417.

As one proposal of this embodiment, as shown in FIG. 3, the guide portion is a guide flow path. One end of the guide flow path is connected to the water outlet 415, and the other end extends toward the inner tank bottom wall 417. Preferably, the water outlet guide structure 414 includes a housing, and the guide flow path penetrates the inside of the housing. The water outlet guide structure 414 has a housing, and the guide flow path is installed inside the housing. In this proposal, the water outlet guide structure 414 is connected to the inner tank side wall 416 as an independent structure, so that the situation in which the discharge water flow from the inner tank 410 directly contacts the outer wall of the outer tank side wall 416 and contaminates the inner tank side wall 416 is directly avoided.

Moreover, the water discharge guide structure 414 is preferably removably installed on the outer wall of the inner tub side wall 416. As a result, if dirt accumulates in the water discharge guide structure 414 due to a long period of operation of the washing machine, causing it to become clogged, the water discharge guide structure 414 can be easily removed and cleaning, repair, replacement, or other operations can be performed.

More preferably, the water discharge guide structure 414 is a water discharge guide pipe for which materials are easy to obtain, which is easy to manufacture, and which is easy to install.

To facilitate the installation of the water discharge guide structure 414, a fixed engaging base or a structure convenient for fixing the water discharge guide structure 414 can be installed on the outer wall of the inner tub 410 at the installation position of the water discharge guide structure. This prevents the water discharge guide structure from becoming unstable due to centrifugal force when the inner tub 410 is dewatered, and thus from falling off.

In another embodiment of the present invention, as shown in FIG. 4, the guide portion is a guide wall. One end of the guide wall faces the water outlet 415 at a distance, and the other end extends toward the bottom wall 417 of the inner tank. The discharge water flow from the inner tank 410 that flows out of the water outlet 415 flows along the guide wall toward the bottom wall 417 of the inner tank due to the blocking effect of the guide wall. This prevents the discharge water flow from scattering around and contaminating the wall surface of the inner tank 410. The width of the guide wall is larger than the size of the water outlet 415 so that the blocking effect of the guide wall is optimal.

Preferably, the guide wall and the inner tank side wall 416 are molded integrally. Alternatively, the guide wall is provided with a connection structure that is fixedly connected to the inner tank side wall 416 by a fastening member. This prevents the water discharge guide structure 414 from wobbling due to centrifugal force during dehydration of the inner tank 410, and thus from falling off.

Alternatively, in order to better block the discharge water flow, the water discharge guide structure 414 further includes connecting side walls on both sides of the guide wall, which form a groove structure with the guide wall. The connecting side walls are connected to the inner tank side wall 416. In this solution, the width of the guide wall only needs to be enough to cover the water discharge port 415. After the connecting side walls are connected to the inner tank side wall 416, the guide wall is grooved, and a flow path for the discharge water flow is formed between the guide wall and the inner tank side wall. The discharge water flow from the inner tank 410 flows along the flow path, which further reduces the splashing of the discharge water flow against the inner tank wall surface and reduces pollution.

The water collecting device 420 is arranged coaxially at the rear of the inner tank 410. The water collecting device 420 has a storage chamber that opens to the inner tank side. A water stop ring 423 is provided on the edge of the opening of the storage chamber. In addition, the drainage end of the water discharge guide structure 414 extends into the storage chamber. By installing the water stop ring 423, it is possible to prevent the water discharged into the water collecting device 420 from moving to the front end of the inner tank 410 and contaminating the front end of the inner tank 410.

Preferably, the connection between the water discharge guide structure 414 and the inner tank side wall 416 is installed inside the water stop ring 423.

As shown in FIG. 2, a water collecting device drain port 424 is provided in the side wall 422 of the water collecting device 420 located at the bottom of the inner tub 410. The side wall between the outer edge of the water collecting device drain port 424 and the bottom wall of the water collecting device, and the side wall between the outer edge of the water collecting device drain port 424 and the water stop ring 423 are both inclined, and the water collecting device drain port 424 is located at the lowest position of the inclined side wall. As shown in FIG. 2, the water collecting device drain port 424 is connected to the drainage device 800. Wastewater that enters the water collecting device 420 can flow quickly into the drainage device 800 due to the action of the inclined side wall, and is discharged to the outside of the washing machine through the drain pipe 810. This prevents wastewater from accumulating in the water collecting device 420 and forming dirt that is difficult to clean.

To further optimize the water collection performance of the water collection device 420 and reduce contamination of the inner tank wall surface by wastewater, a water receiving groove 421 is installed on the bottom wall of the storage chamber. The water receiving groove 421 is recessed in a direction away from the inner tank 410 and is installed in a ring shape. The drainage end of the water discharge guide structure 414 extends into the water receiving groove 421. After entering the water receiving groove 421, the wastewater is rapidly concentrated at the bottom of the water collection device 420 due to the blocking action of the groove wall, improving the water collection efficiency.

Preferably, the side wall between the outer edge of the water collecting device outlet 424 and the water receiving groove 421, and the side wall between the outer edge of the water collecting device outlet 424 and the water stop ring 423 are both installed at an incline, and the water collecting device outlet 424 is located at the lowest position of the inclined side wall.

In this embodiment, the above-mentioned water discharge guide structure 414 is installed on the inner wall of the inner tank side wall 416.

As one version of this embodiment, as shown in FIG. 5, the guide portion is a guide wall, one end of which is fixedly connected to the inner tank bottom wall 417 or molded integrally therewith, and the other end of which extends toward the inside of the inner tank away from the inner tank bottom wall 417 and is connected to the inner wall of the inner tank side wall 416. The end of the inner tank side wall 416 that extends toward the inner tank bottom wall 417 is installed in a floating state, and extends to the rear of the inner tank bottom wall 417.

Preferably, the guide wall is installed in a circumferential direction in a ring shape around the edge of the inner tank bottom wall 417. The water discharge device is installed on the inner wall of the guide wall, and a ring-shaped flow path is formed between the guide wall and the inner tank side wall 416. The water discharge port 415 is opened in the guide wall, and connects the inner tank to the ring-shaped flow path. By installing the guide wall in a ring shape inside the inner tank side wall 416, the volume of the inner tank can be further increased, and the utilization rate of the inner tank 410 can be improved. Furthermore, the guide wall installed in a ring shape has a simple structure, is less difficult to process, and is easy to realize.

As another solution of this embodiment, as shown in Figs. 6 and 7, the guide part is a guide passage that extends toward the inner tub bottom wall 417 and communicates with the outside of the inner tub. The water discharge guide structure 414 has a water discharge port 415 that connects the inner tub 410 to the guide passage, and a water discharge device is installed in the water discharge port 415 (not shown, but the specific structure is as shown in Fig. 8). Compared with the above solution of this embodiment, the wall structure of the inner tub 410 in this solution has little change, and one end of the inner tub side wall 416 that extends toward the inner tub bottom wall 417 is the same as that of a general washing machine. The inner tub side wall 416 is molded integrally with the inner tub bottom wall 417 and is not installed in a floating state.

The water discharge guide structure 414 is a cover member attached to the inner wall of the inner tank side wall 416. An independent guide flow path is provided inside the cover member (see FIG. 6). Because the water discharge guide structure 414 is connected to the inner tank side wall 416 as an independent member, it directly prevents the discharge water flow from the inner tank 410 from directly contacting the inner wall of the outer tank side wall 416, thereby contaminating the inner tank side wall 416.

Moreover, the water discharge guide structure 414 is preferably removably installed on the inner wall of the inner tub side wall 416. As a result, if dirt accumulates in the water discharge guide structure 414 due to a long period of operation of the washing machine, causing it to become clogged, the water discharge guide structure 414 can be easily removed and cleaning, repair, replacement, or other operations can be performed.

More preferably, the water discharge guide structure 414 is a water discharge guide pipe for which materials are easy to obtain, which is easy to manufacture, and which is easy to install.

To facilitate easy installation of the water discharge guide structure 414, a fixed engaging base or a structure convenient for fixing the water discharge guide structure 414 can be installed on the inner wall of the inner tub 410 at the installation position of the water discharge guide structure 414. This prevents the water discharge guide structure from becoming unstable due to centrifugal force when the inner tub 410 is dehydrated, and thus from falling off.

To realize communication between the guide flow path and the outside of the inner tank, an opening (not shown) is provided in the inner tank side wall 416 or the inner tank bottom wall 417. The cover member extends to the opening, and the guide flow path communicates with the opening.

Alternatively, to further prevent contamination of the outer wall of the inner tank by wastewater, the cover member extends through the opening, and the guide channel extends to the outside of the inner tank.

In another embodiment of this solution, as shown in FIG. 7, the cover member is hermetically connected to the inner wall of the inner tank side wall 416, thereby forming the guide channel. An opening is provided in the inner tank side wall 416 or the inner tank bottom wall 417. The cover member extends to the opening, and the guide channel communicates with the opening. Alternatively, the cover member extends to pass through the opening, and the guide channel extends to the outside of the inner tank.

Preferably, the water discharge guide structure 414 is tank-shaped, and the tank wall is connected in a sealed manner to the inner wall of the inner tank side wall 416, thereby forming the guide flow path. An opening is provided in the inner tank side wall 416 or the inner tank bottom wall 417, and the tank body can be extended to the opening and communicated with the opening, allowing the wastewater to be directly discharged to the outside of the inner tank. In addition, to further prevent the wastewater from contaminating the outer wall of the inner tank, the tank body may be extended to pass through the opening and extend to the outside of the inner tank.

The water collecting device 420 is arranged coaxially at the rear of the inner tank 410. The water collecting device 420 has a storage chamber that opens to the inner tank side. A water stop ring 423 is provided on the edge of the opening of the storage chamber. In addition, the drainage end of the water discharge guide structure 414 extends into the storage chamber. By installing the water stop ring 423, it is possible to prevent the water discharged into the water collecting device 420 from moving to the front end of the inner tank 410 and contaminating the front end of the inner tank 410.

Preferably, the drainage end of the water outlet guide structure 414 is installed inside the water stop ring 423.

As shown in FIG. 2, a water collecting device drain port 424 is provided in the side wall 422 of the water collecting device 420 located at the bottom of the inner tub 410. The side wall between the outer edge of the water collecting device drain port 424 and the bottom wall of the water collecting device, and the side wall between the outer edge of the water collecting device drain port 424 and the water stop ring 423 are both inclined, and the water collecting device drain port 424 is located at the lowest position of the inclined side wall. As shown in FIG. 2, the water collecting device drain port 424 is connected to the drainage device 800. Wastewater that enters the water collecting device 420 can flow quickly into the drainage device 800 due to the action of the inclined side wall, and is discharged to the outside of the washing machine through the drain pipe 810. This prevents wastewater from accumulating in the water collecting device 420 and forming dirt that is difficult to clean.

To further optimize the water collection performance of the water collection device 420 and reduce contamination of the inner tank wall surface by wastewater, a water receiving groove 421 is installed on the bottom wall of the storage chamber. The water receiving groove 421 is recessed in a direction away from the inner tank 410 and is installed in a ring shape. The drainage end of the water discharge guide structure 414 extends into the water receiving groove 421. After entering the water receiving groove 421, the wastewater is rapidly concentrated at the bottom of the water collection device 420 due to the blocking action of the groove wall, improving the water collection efficiency.

Preferably, the side wall between the outer edge of the water collecting device outlet 424 and the water receiving groove 421, and the side wall between the outer edge of the water collecting device outlet 424 and the water stop ring 423 are both installed at an incline, and the water collecting device outlet 424 is located at the lowest position of the inclined side wall.

In this example, we will explain the water receiving groove.

As shown in Figures 1 and 2, the drum washing machine includes an inner tub 410 that independently stores wash water during washing. A water collecting device 420 has a storage chamber that opens to the inner tub side. The inner tub 410 is installed in the storage chamber. A water receiving groove 421 is installed in the bottom wall 417 of the storage chamber, and the discharged water flow from the inner tub 410 is discharged into the water receiving groove 421. This makes it possible to focus the discharged water flow from the inner tub 410 in the water receiving groove 421, thereby reducing the scattering of the discharged water flow against the wall surface of the inner tub 410. In addition, the focusing effect of the water receiving groove 421 improves the discharge efficiency of the discharged water flow.

2, the water collecting device 420 includes a bottom wall 425 and a side wall 422. The bottom wall 425 is installed coaxially with the inner tank and installed at the rear of the inner tank 410. The side wall 422 is installed on the edge of the bottom wall 425, extends toward the inner tank 410, and is installed in a ring shape outside the inner tank 410. The extension length of the side wall 422 is specifically set according to the position of the water outlet 415. Preferably, the water outlet 415 is installed within the surrounding range of the side wall 422. In particular, when the water outlet 415 is installed as in Example 1, the water outlet 415 is installed within the surrounding range of the side wall 422. This can effectively block the discharge water flow from the inner tank 410 and prevent the discharge water flow from scattering against the wall surface of the inner tank 410.

In addition, as shown in FIG. 9, the water receiving groove 421 is recessed in a direction away from the inner tank 410 and is installed in a ring shape on the bottom wall 425.

As shown in FIG. 9, the water receiving groove 421 includes a first side wall 4211, a second side wall 4212, and a groove bottom wall 4213.

In one embodiment of the present invention, the groove bottom wall 4213 and the bottom wall 417 of the inner tank are installed in parallel. The first side wall 4211 is formed by folding back the edge of the bottom wall 425 in a direction away from the inner tank 410, and is connected to the groove bottom wall 4213. The second side wall 4212 is connected to the groove bottom wall 4213 and the side wall 422 of the water collecting device, respectively. Preferably, the water receiving groove 421 and the bottom wall 425 are molded integrally. After the discharge water flow from the inner tank 410 enters the water receiving groove 421, the first side wall 4211 and the second side wall 4212 act to block the upward flow of the water, reducing the scattering and contamination of the discharge water flow against the inner tank bottom wall 417 and the side wall 416.

In another embodiment of the present invention, the first side wall 4211 is connected to the edge of the bottom wall 425 of the water collecting device and extends in a direction away from the inner tank 410. The second side wall 4212 is connected to the side wall 422 of the water collecting device and extends in a direction approaching the inner tank 410. The groove bottom wall 4213 is connected to the first side wall 4211 and the second side wall 4212, respectively. The water receiving groove 421 in this embodiment is integrally molded and fixedly connected to the bottom wall 425 and the side wall 422 of the water collecting device as an independent member. By fixing it to the water collecting device 420 as an independent member, processing is easy. In particular, when the water receiving groove 421 is fixedly connected to the water collecting device 420 in a removable manner, it is advantageous to clean and repair the water receiving groove 421 later.

The receiving groove 421 and the water collecting device 420 can be connected by welding, threading, riveting or insertion.

As another solution to this embodiment, the water receiving groove 421 is a groove (not shown) that surrounds the bottom wall 425 of the water collecting device. In this case, the conventional structure of the water collecting device 420 is used as is, and the groove is directly opened in the bottom wall 425, so the structure is simple and easy to process.

As shown in FIG. 9, the water collecting device 420 further includes a water collecting device outlet 424 opened in the side wall 422 of the water collecting device located at the bottom of the inner tank 410. The side wall between the outer edge of the water collecting device outlet 424 and the water receiving groove 421, and the side wall between the outer edge of the water collecting device outlet 424 and the outer edge of the water collecting device side wall 422 are both installed at an incline, and the water collecting device outlet 424 is located at the lowest position of the inclined side wall. By installing it in this way, the discharge water flow from the inner tank that enters the water receiving groove 421 can rapidly enter the water collecting device outlet 424 along the inclined side wall 422 due to the action of gravity. This prevents the discharge water flow from accumulating and solidifying in the side wall 422, polluting the drainage environment and even blocking the drain.

As shown in FIG. 9, the water collecting device 420 further includes a water stop ring 423 that is annularly installed on the outer edge of the side wall 422 of the water collecting device. The side wall between the outer edge of the water collecting device drain outlet 424 and the water receiving groove 421, and the side wall between the outer edge of the water collecting device drain outlet 424 and the water stop ring 423 are both installed at an incline, and the water collecting device drain outlet 424 is located at the lowest position of the inclined side wall. By installing the water stop ring 423, it is possible to prevent the discharged water flow from the inner tub 410 from flowing along the side wall 422 to the outside of the water collecting device 420 and polluting the environment inside the washing machine.

As shown in FIG. 9, the washing machine of this embodiment includes a water discharge guide structure 414 to easily guide the discharged water flow from the inner tub 410 to the water receiving groove 421. The water discharge guide structure 414 is connected to the inner tub 410 and guides the discharged water flow from the inner tub. The drainage end of the water discharge guide structure 414 extends into the water receiving groove 421.

The specific installation method of the water discharge guide structure 414 has been described in detail in Examples 1 and 2, so it will not be described again here.

The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form. Although the present invention has been disclosed above by way of a preferred embodiment, this is not intended to limit the present invention. Within the scope of the technical solution of the present invention, slight modifications or additions that can be implemented by a person skilled in the art using the technical content presented above are equivalent embodiments that have been modified in an equivalent manner, and none of them deviate from the content of the technical solution of the present invention. In addition, any simple modifications, equivalent modifications, and additions made to the above embodiments based on the technical essence of the present invention all fall within the scope of the solution of the present invention.

REFERENCE SIGNS LIST 100 Housing 120 Main body door 300 Controller 400 Detergent case 410 Inner tub 411 Inner tub door 412 Lifting rib 413 Seal valve 414 Water discharge guide structure 415 Water discharge port 416 Inner tub side wall 417 Inner tub bottom wall 420 Water collection device 421 Water receiving groove 4211 First side wall 4212 Second side wall 4213 Groove bottom wall 422 Side wall 423 Water stop ring 424 Water collection device drain port 425 Bottom wall 430 Sealing structure 440 Water inlet structure 500 Motor 600 Water supply pipe 700 Water supply valve 800 Drainage device 810 Drainage pipe

Claims (7)

A drum washing machine including an inner tub that independently stores wash water during washing and a water collecting device having a storage chamber that opens to the inner tub side, the inner tub being disposed in the storage chamber,
A water receiving groove is provided on a bottom wall of the storage chamber, and a water flow discharged from the inner tub is discharged into the water receiving groove.
The water collecting device includes a bottom wall and a side wall, the bottom wall is arranged coaxially with the inner tank, the side wall is arranged on the edge of the bottom wall, extends toward the inner tank, and is arranged in an annular shape on the outside of the inner tank;
The water-receiving groove is recessed in a direction away from the inner tank and is disposed in an annular shape on the bottom wall,
A water discharge guide structure communicates with the inner tank and guides the discharge water flow from the inner tank;
The drainage end of the water discharge guide structure extends into the water receiving groove,
The inner tank includes an inner tank bottom wall and an inner tank side wall,
A water outlet is opened in the inner tub side wall, a water outlet device is installed in the water outlet, the water outlet guide structure is installed on the outer wall of the inner tub side wall, one end is fixed to the water outlet location and the other end extends toward the inner tub bottom wall, and a drainage end of the water outlet guide structure extends into the water receiving groove. The water receiving groove includes a first side wall, a second side wall and a groove bottom wall;
2. The drum washing machine according to claim 1, wherein the bottom wall of the groove and the bottom wall of the inner tub are arranged parallel to each other, the first side wall is formed by folding back an edge of the bottom wall in a direction away from the inner tub and is connected to the bottom wall of the groove, and the second side wall is connected to the bottom wall of the groove and a side wall of the water collecting device, respectively. The water receiving groove includes a first side wall, a second side wall and a groove bottom wall;
The first side wall is connected to a peripheral edge of the bottom wall of the water collecting device and extends in a direction away from the inner tank,
the second side wall is connected to a side wall of the water collecting device and extends in a direction adjacent to the inner tank;
The groove bottom wall is connected to the first side wall and the second side wall,
2. The drum washing machine according to claim 1, wherein the water receiving groove is integrally formed and fixedly connected to the bottom wall and the side wall of the water collecting device. The drum washing machine according to claim 1, characterized in that the water receiving groove is a groove that surrounds the bottom wall of the water collecting device in the circumferential direction. a water collecting device outlet opening in a side wall of the water collecting device located under the inner tank;
5. The method according to claim 1, wherein a side wall between an outer edge of the water collecting device outlet and the water receiving groove, and a side wall between an outer edge of the water collecting device outlet and an outer edge of the side wall of the water collecting device are inclined, and the water collecting device outlet is disposed at a lowest position of the inclined side wall.
Item 2. The drum washing machine according to item 1. A water stop ring is provided annularly on the outer edge of the side wall of the water collecting device,
6. The drum washing machine according to claim 5, wherein a side wall between an outer edge of the water collecting device outlet and the water receiving groove, and a side wall between an outer edge of the water collecting device outlet and the water stop ring are all inclined, and the water collecting device outlet is disposed at a lowest position of the inclined side wall. The inner tank includes an inner tank bottom wall and an inner tank side wall,
The drum washing machine described in claim 5, characterized in that the water discharge guide structure is installed on the inner wall of the inner tub side wall, the water discharge guide structure is a guide flow path that extends toward the bottom wall of the inner tub and communicates with the outside of the inner tub, the water discharge guide structure has a water discharge port that connects the inner tub and the guide flow path, and a water discharge device is installed in the water discharge port.