Drum washing machine

Abstract

The drum washing machine includes an inner tub (410) that independently stores wash water during washing, and a water collecting device (420) having a chamber that opens toward the inner tub (410). The inner tub (410) is installed within the chamber. A water receiving groove (421) is installed on the bottom wall of the chamber. Water discharged from the inner tub (410) is discharged into the water receiving groove (421). By installing the water collecting device (420) and further installing the water receiving groove (421) within the water collecting device (420), the water discharged from the inner tub (410) can be focused into the water receiving groove (421), thereby further reducing the splashing of the water discharged 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 water discharged.

Description

[Technical field]

[0001] The present invention is in the field of household appliances, and in particular drum washing machines. [Background technology]

[0002] In the prior art, a drum washing machine generally includes an outer tub that is sealed to contain water, and an inner tub that communicates with the outer tub. The washing capacity is determined by the inner tub, but this design not only limits the volume of the inner tub, but also makes it easy for dirt to accumulate between the inner tub and the outer tub, making cleaning difficult. In response to the above problems, engineers have creatively proposed a concept of designing the inner tub as a sealed container.

[0003] 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 stores water during the washing process. The washing machine further includes a support base. The support base is mounted in 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, the capacity of the inner tub is increased by using a support base instead of the conventional outer tub, which occupies a large volume.

[0004] 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. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Chinese Patent Application No. 2017103201913 Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem to be solved by the present invention is to provide a drum washing machine that overcomes the deficiencies of the prior art. [Means for solving the problem]

[0007] In order to solve the above technical problems, the basic idea of ​​the technical solution adopted in the present invention is as follows:

[0008] The drum washing machine includes an inner tub that contains wash water during washing, and a water collecting device having a storage chamber that opens to the inner tub side, and the inner tub is placed inside the storage chamber. A water receiving groove is provided on the bottom wall of the storage chamber, and the discharged water flow from the inner tub is discharged into the water receiving groove.

[0009] The water collecting device further includes a bottom wall and a side wall, the bottom wall being coaxial with the inner tank, and the side wall being disposed on the periphery of the bottom wall, extending toward the inner tank, and annularly disposed outside the inner tank.

[0010] The water-receiving groove is recessed in a direction away from the inner tub and is disposed in an annular shape on the bottom wall.

[0011] Furthermore, the water-receiving groove includes a first side wall, a second side wall and a groove bottom wall.

[0012] 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 the 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 the side wall of the water collecting device.

[0013] Preferably, the water receiving groove and the bottom wall are integrally formed.

[0014] Furthermore, the water-receiving groove includes a first side wall, a second side wall and a groove bottom wall.

[0015] The first side wall is connected to the edge of the bottom wall of the water collecting device and extends in a direction away from the inner tank.

[0016] The second side wall is connected to the side wall of the water collecting device and extends in a direction adjacent to the inner tub.

[0017] The groove bottom wall is connected to the first side wall and the second side wall, respectively.

[0018] The water receiving groove is integrally molded and fixedly connected to the bottom wall and the side wall of the water collecting device.

[0019] Preferably, the water receiving groove and the water collecting device are connected by welding, screwing, riveting or inserting.

[0020] Furthermore, the water receiving groove is a groove that is opened in the bottom wall of the water collecting device and surrounds the bottom wall in the circumferential direction.

[0021] The water collecting device further includes a water collecting device drain opening formed in a side wall of the water collecting device located at the bottom of the inner tank.

[0022] 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 all installed at an incline, and the water collecting device outlet is located at the lowest position of the inclined side wall.

[0023] The water collecting device further includes a water stop ring disposed annularly on the outer edge of the side wall of the water collecting device.

[0024] 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 all installed at an incline, and the water collecting device outlet is located at the lowest position of the inclined side wall.

[0025] Furthermore, the water discharge guide structure communicates with the inner tub and guides the discharge water flow from the inner tub.

[0026] The discharge end of the water discharge guide structure extends into the water receiving groove.

[0027] Furthermore, the inner tank includes an inner tank bottom wall and an inner tank side wall.

[0028] The inner tank side wall has a water outlet, and a water outlet device is installed at the water outlet. The water outlet guide structure is installed on the outer wall of the inner tank side wall, and has 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.

[0029] Furthermore, the inner tank includes an inner tank bottom wall and an inner tank side wall.

[0030] 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 passage 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 communicates the inner tank with the guide passage, and a water discharge device is installed in the water discharge port. Effect of the Invention

[0031] By using the above technical solutions, the present invention has the following beneficial effects compared with the prior art:

[0032] 1) In the present invention, the outer tank structure is omitted, and the capacity of the inner tank is increased. 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.

[0033] 2) In the present invention, a water collecting device is provided and a water receiving groove is further provided in the water collecting device, so that the discharged water flow from the inner tank can be focused in the water receiving groove, which further reduces the scattering of the discharged water flow against the wall surface of the inner tank, and the focusing effect of the water receiving groove improves the discharge efficiency of the discharged water flow.

[0034] Specific embodiments of the present invention will be described in more detail below in conjunction with the drawings.

[0035] The drawings are used as a part of the present invention for further understanding of the present invention. In addition, the schematic embodiments of the present invention and their explanations are used for the interpretation of the present invention, but do not unduly limit the present invention. It goes without saying that the drawings described below are only a part of the embodiments, and those skilled in the art can obtain other drawings from these drawings without requiring creative labor. [Brief description of the drawings]

[0036] [Figure 1] FIG. 1 is a schematic diagram of a washing machine according to the present invention. [Diagram 2] FIG. 2 is a schematic structural diagram of the present invention taken along the line AA in FIG. [Diagram 3] FIG. 3 is a schematic diagram of an enlarged structure of part B in FIG. 2 of the present invention. [Figure 4] FIG. 4 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. [Diagram 5] FIG. 5 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. [Figure 6] FIG. 6 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. [Figure 7] FIG. 7 is a schematic diagram of an enlarged structure of another embodiment of part B in FIG. 2 of the present invention. [Figure 8] FIG. 8 is a schematic structural diagram of a part of the inside of the lifting rib in FIG. 1 of the present invention. [Figure 9] FIG. 9 is an enlarged view of the structure of the water-receiving groove portion in FIG. 2 of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] It should be explained that these drawings and textual description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art with reference to specific embodiments.

[0038] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and concisely describe the technical solutions of the embodiments in combination with the drawings of the embodiments of the present invention, which are for illustrating the present invention only and are not intended to limit the scope of the present invention.

[0039] In the description of 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 drawings, and are merely for the convenience and simplification of the description of the present invention, and do not explicitly or implicitly indicate that the target device or member has a specific direction and must be constructed and operated in a specific direction. Therefore, it should not be understood as limiting the present invention.

[0040] In the description of the present invention, the terms "attached", "connected" and "connected" should be interpreted broadly unless otherwise clearly specified 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.

[0041] 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 with conventional washing machines, the drum washing machine of the present invention omits an 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.

[0042] 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. A water passage hole is provided in the lifting rib 412. The seal valve 413 is also installed in a 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.

[0043] In order to easily guide the discharged water flow from the inner tub 410 into the water collecting device 420, the device further includes a water discharge guide structure 414. The water discharge guide structure 414 is in communication with the inner tub 410, and discharges the discharged water flow from the inner tub 410 directly into the water collecting device 420. This reduces the scattering of the discharged water flow against the wall surface of the inner tub, and reduces contamination of the wall surface of the inner tub.

[0044] The water discharge guide structure 414 is installed on the inner tank side wall 416 and has a guide portion extending in the axial direction of the inner tank. EXAMPLES

[0045] 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, which simplifies operation and reduces installation costs.

[0046] 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 in 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 flowing out from the water outlet 415 to directly enter 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.

[0047] In one embodiment of the present invention, as shown in FIG. 3, the guide part is a guide passage. One end of the guide passage 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 passage penetrates the inside of the housing. The water outlet guide structure 414 has a housing, and the guide passage is installed inside the housing. In this solution, 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.

[0048] In addition, the water discharge guide structure 414 is preferably removably installed on the outer wall of the inner-tub side wall 416. In this way, when dirt accumulates in the water discharge guide structure 414 due to a long period of operation of the washing machine, causing clogging, the water discharge guide structure 414 can be easily removed for cleaning, repair, replacement, or other operations.

[0049] More preferably, the water discharge guide structure 414 is a water discharge guide pipe whose material is easily available, which is easy to manufacture, and which is easy to install.

[0050] 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 may 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 during dehydration of the inner tub 410, and from falling off.

[0051] In another embodiment of the present invention, the guide portion is a guide wall, as shown in Fig. 4. 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 tub. The discharge water flow from the inner tub 410 through the water outlet 415 flows along the guide wall toward the bottom wall 417 of the inner tub 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 tub 410. To optimize the blocking effect of the guide wall, the width of the guide wall is larger than the size of the water outlet 415.

[0052] Preferably, the guide wall and the inner tub side wall 416 are integrally molded. Alternatively, the guide wall is provided with a connection structure that is fixedly connected to the inner tub side wall 416 by a fastening member. This prevents the water discharge guide structure 414 from wobbling due to centrifugal force during dewatering of the inner tub 410, and thus from falling off.

[0053] Alternatively, in order to better block the discharged water flow, the 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 cover the water outlet 415. After the connecting side walls are connected to the inner tank side wall 416, the guide wall has a groove shape, and a flow path for the discharged water flow is formed between the guide wall and the inner tank side wall. The discharged water flow from the inner tank 410 flows along the flow path, which further reduces the splashing of the discharged water flow on the inner tank wall surface and reduces pollution.

[0054] The water collecting device 420 is disposed coaxially at the rear of the inner tub 410. The water collecting device 420 has a storage chamber that opens to the inner tub side. A water stop ring 423 is provided on the periphery 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 providing 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 tub 410 and contaminating the front end of the inner tub 410.

[0055] Preferably, the connection point between the water discharge guide structure 414 and the inner tank side wall 416 is installed inside the water stop ring 423.

[0056] As shown in FIG. 2, a water collecting device drain port 424 is provided in a side wall 422 of the water collecting device 420 located under 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 a drainage device 800. Wastewater entering the water collecting device 420 can flow into the drainage device 800 quickly due to the inclined side wall, and is discharged to the outside of the washing machine through a drain pipe 810. This prevents wastewater from accumulating in the water collecting device 420 and forming dirt that is difficult to clean.

[0057] In order to further optimize the water collecting performance of the water collecting device 420 and reduce the contamination of the inner tank wall surface caused by wastewater, a water receiving groove 421 is installed on the bottom wall of the accommodating chamber. The water receiving groove 421 is recessed in a direction away from the inner tank 410 and is installed in an annular 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 collecting device 420 due to the blocking effect of the groove wall, thereby improving the water collecting efficiency.

[0058] 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 positioned at the lowest position of the inclined side wall. EXAMPLES

[0059] The water discharge guide structure 414 in this embodiment is installed on the inner wall of the inner tank side wall 416.

[0060] 5, in one version of this embodiment, the guide portion is a guide wall, one end of which is fixedly connected to the inner tank bottom wall 417 or is 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.

[0061] Preferably, the guide wall is installed in a circumferential direction in a ring shape around the edge of the inner tank bottom wall 417. A 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. A 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 is improved. In addition, the guide wall installed in a ring shape has a simple structure, is less difficult to process, and is easy to realize.

[0062] In another solution of this embodiment, as shown in Figures 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 is provided with 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 Figure 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.

[0063] 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 and contaminating the inner tank side wall 416.

[0064] Moreover, preferably, water discharge guide structure 414 is removably installed on the inner wall of inner-tub side wall 416. In this way, when dirt accumulates in water discharge guide structure 414 and causes clogging due to the long period of operation of the washing machine, water discharge guide structure 414 can be easily removed for cleaning, repair, replacement, or other operations.

[0065] More preferably, the water discharge guide structure 414 is a water discharge guide pipe whose material is easily available, which is easy to manufacture, and which is easy to install.

[0066] 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 may 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 during dehydration of the inner tub 410, and from falling off.

[0067] In order to realize communication between the guide passage 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 passage communicates with the opening.

[0068] Alternatively, in order to further prevent the outer wall of the inner tank from being contaminated by wastewater, the cover member extends through the opening, and the guide passage extends to the outside of the inner tank.

[0069] 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 through the opening, and the guide channel extends to the outside of the inner tank.

[0070] Preferably, the water discharge guide structure 414 is tank-shaped, and the tank wall is connected to the inner wall of the inner tank side wall 416 in a sealed manner, 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 order 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.

[0071] The water collecting device 420 is disposed coaxially at the rear of the inner tub 410. The water collecting device 420 has a storage chamber that opens to the inner tub side. A water stop ring 423 is provided on the periphery 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 providing 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 tub 410 and contaminating the front end of the inner tub 410.

[0072] Preferably, the drainage end of the water discharge guide structure 414 is installed inside the water stop ring 423 .

[0073] As shown in FIG. 2, a water collecting device drain port 424 is provided in a side wall 422 of the water collecting device 420 located under 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 a drainage device 800. Wastewater entering the water collecting device 420 can flow into the drainage device 800 quickly due to the inclined side wall, and is discharged to the outside of the washing machine through a drain pipe 810. This prevents wastewater from accumulating in the water collecting device 420 and forming dirt that is difficult to clean.

[0074] In order to further optimize the water collecting performance of the water collecting device 420 and reduce the contamination of the inner tank wall surface caused by wastewater, a water receiving groove 421 is installed on the bottom wall of the accommodating chamber. The water receiving groove 421 is recessed in a direction away from the inner tank 410 and is installed in an annular 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 collecting device 420 due to the blocking effect of the groove wall, thereby improving the water collecting efficiency.

[0075] 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 positioned at the lowest position of the inclined side wall. EXAMPLES

[0076] In this embodiment, a water receiving groove will be described.

[0077] As shown in Figs. 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 placed in the storage chamber. A water receiving groove 421 is provided in a 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.

[0078] As shown in FIG. 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 periphery 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 splashing against the wall surface of the inner tank 410.

[0079] In addition, as shown in FIG. 9, the water-receiving groove 421 is recessed in a direction away from the inner tub 410 and is disposed in an annular shape on the bottom wall 425 .

[0080] 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 .

[0081] In one embodiment of the present invention, the groove bottom wall 4213 and the bottom wall 417 of the inner tank are arranged 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 integrally molded. 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, thereby reducing the scattering and contamination of the discharge water flow against the bottom wall 417 and the side wall 416 of the inner tank.

[0082] 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 the water receiving groove 421 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 convenient for cleaning and repairing the water receiving groove 421 later.

[0083] The water receiving groove 421 and the water collecting device 420 can be connected by welding, screwing, riveting or plugging.

[0084] In another embodiment of the present invention, the water receiving groove 421 is a circumferential groove (not shown) formed in the bottom wall 425 of the water collecting device. In this case, the conventional structure of the water collecting device 420 is utilized as it is, and the groove is directly formed in the bottom wall 425, so that the structure is simple and easy to process.

[0085] As shown in FIG. 9, the water collecting device 420 further includes a water collecting device outlet 424 provided in a 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 side wall 422 of the water collecting device are both inclined, and the water collecting device outlet 424 is located at the lowest position of the inclined side wall. By installing in this manner, the discharge water flow from the inner tank that has entered 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 depositing in the side wall 422, coagulating, and thereby polluting the drainage environment and clogging the drain.

[0086] 9, the water collecting device 420 further includes a water stop ring 423 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 out of the water collecting device 420 along the side wall 422 and polluting the environment inside the washing machine.

[0087] 9, in order to easily guide the discharged water flow from the inner tub 410 to the water receiving groove 421, the washing machine of this embodiment includes a water discharge guide structure 414. The water discharge guide structure 414 communicates with the inner tub 410 and guides the discharged water flow from the inner tub. The drain end of the water discharge guide structure 414 extends into the water receiving groove 421.

[0088] The specific installation method of the water discharge guide structure 414 has been described in detail in the first and second embodiments, so it will not be described again here.

[0089] 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 a preferred embodiment, it 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 made by a person skilled in the art using the technical content presented above are equivalently modified equivalent embodiments, 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 belong to the scope of the solution of the present invention. [Explanation of symbols]

[0090] 100 Housing 120 Main Door 300 Controller 400 Detergent Case 410 Inner tank 411 Inner tank door 412 Lifting Rib 413 Seal Valve 414 Water outlet guide structure 415 Outlet 416 Inner tank side wall 417 Bottom wall of inner tank 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 425 Bottom wall 430 Seal structure 440 Water entry structure 500 Motor 600 Water supply pipe 700 Water supply valve 800 Drainage equipment 810 Drain pipe

Claims

1. 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 outside 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.

2. 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.

3. 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.

4. 2. The drum washing machine according to claim 1, wherein the water receiving groove is a groove formed in a bottom wall of the water collecting device and surrounding the bottom wall in a circumferential direction.

5. a water collecting device outlet opening in a side wall of the water collecting device located under the inner tank; A side wall between the outer edge of the water collecting device outlet and the water receiving groove, and The side walls between the outer edge and the outer edge of the side wall of the water collecting device are all inclined.

5. The drain outlet according to claim 1, wherein the drain outlet is disposed at the lowest position of the inclined side wall. Item 2. The drum washing machine according to item 1.

6. A water stop ring is provided annularly on the outer edge of the side wall of the water collecting device, A side wall between the outer edge of the water collecting device outlet and the water receiving groove, and The side walls between the outer edge and the water stop ring are all inclined, and the drain outlet of the water collecting device is inclined.

6. The drum washing machine according to claim 5, wherein the washing machine is disposed at a lowest position of the side wall.

7. 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.

Images