Washing machine

Abstract

The invention relates to the field of household appliances, in particular to a washing machine which comprises a machine body and a drainage system, the drainage system comprises a drainage valve set, a water outlet pipe and a drainage pipe, the drainage valve set comprises a shell, an impeller part and a filtering part, and a drainage valve chamber, a water outlet part and a drainage part are formed in the drainage valve set; a water passing channel is formed between the water outlet part and the drainage valve chamber, and the filtering piece is installed in the water passing channel; a residue discharging channel is further formed in the water passing channel, one end of the residue discharging channel communicates with the lowest position of the water passing channel, and the other end of the residue discharging channel communicates with the drainage valve chamber; sewage is completely discharged, is prevented from being accumulated in a drainage system and is thoroughly discharged, and peculiar smell is reduced; in addition, the filtering piece can filter sewage output into the water passing channel from the water outlet pipe, impurities such as hair and batting can be blocked by the filtering part, the impurities with small sizes are directly discharged, pipeline blockage is avoided, the maintenance frequency is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a washing machine. Background Art

[0002] A washing machine is one of the essential household appliances in people's homes. A washing cavity is formed in the washing machine. Washing water is input into the washing cavity through a water inlet pipe group. The sewage after washing is discharged from a drainage pipe. A drainage pump is provided on the drainage pipe of the washing machine. The drainage pump is connected to the washing cavity of the washing machine through one end of the drainage pipe, and is connected to the outside of the washing machine through the other end.

[0003] The drain pump can quickly pump out the water inside the washing tub and discharge it to the outside of the washing machine (such as during the dehydration process), thereby speeding up the drainage of the water from the washing tub.

[0004] The connection between the drain pump and the washing machine in the prior art is through a drain pipe, a pipe clamp, a sheath and an external drain pipe. The assembly process is laborious, time-consuming, and prone to errors. Vibrations and noise occur during operation. In addition, the existing drain pump has the problem of incomplete sewage discharge during the drainage process, which causes the drainage pipe of the washing machine to have an odor due to long-term water accumulation, greatly affecting the user experience. Summary of the invention

[0005] The object of the present invention is to provide a washing machine to solve the problems existing in the prior art, such as the difficulty in assembling the drainage pump between the washing machine body, the existence of working noise, and the incomplete drainage of sewage from the drainage pump.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: The present invention provides a washing machine, which comprises: A body having a washing cavity formed therein; A drainage system, comprising a drainage valve group, a water outlet pipe and a drainage pipe, wherein the drainage valve group is connected to the machine body, and the water outlet pipe is communicated with the washing inner cavity; Wherein, the drain valve group includes: A housing having a drain valve chamber, a water outlet connected to the water outlet pipe, and a drain portion connected to the drain pipe, a water passage formed between the water outlet and the drain valve chamber, and the drain valve chamber communicating with the drain portion; an impeller member connected to the drain valve chamber, under the action of the impeller member, water enters the water passage from the water outlet portion, and is output from the water outlet portion through the drain valve chamber; A filter element, which is detachably installed in the water passage and plays a filtering role; Wherein, a residual drainage channel is also formed in the water passage, one end of the residual drainage channel is connected to the lowest position of the water passage, and the other end is connected to the drainage valve chamber.

[0007] In some embodiments of the present application, the water outlet is located on one side of the shell, the drainage portion is located above the drainage valve chamber, and the first end of the residual drainage channel connected to the water passage is not lower than the second end of the residual drainage channel connected to the drainage valve chamber.

[0008] In some embodiments of the present application, the cross-sectional shape of the water passage is circular, a mounting opening perpendicular to the axis of the water passage is formed on the shell, the filter element is detachably connected to the mounting opening, a filter portion is formed on the filter element, and the filter portion at least partially extends downstream of the water outlet.

[0009] In some embodiments of the present application, the filter element includes a connecting end and a water passing end, and the connecting end and the water passing end are connected via a middle portion; A sealing member is formed between the connecting end and the water passage; The water passing end is formed with an overlap portion extending toward the connecting end, the overlap portion is formed with a penetrating filter channel, the filter portion is formed on the connecting end, and a terminal end of the filter portion extends into the filter channel.

[0010] In some embodiments of the present application, the filter portion gradually narrows along a direction from the connection end to the water flow end, and an outer wall of the filter portion is formed with a concave and convex surface.

[0011] In some embodiments of the present application, an auxiliary water passing portion is formed at one end of the water passing end away from the overlapping portion, an annular groove is formed between the auxiliary water passing portion and the water passing end, at least one first filter hole is formed on the water passing end, and second filter holes adapted to the positions of each of the first filter holes are formed on the auxiliary water passing portion, and in the installed state, at least one group of the first filter holes and the second filter holes are located at the bottom of the water passing channel.

[0012] In some embodiments of the present application, at least one guide portion is formed on the inner wall of the water passage, and a docking portion adapted to the position of the guide portion is formed on the middle portion. During installation, the docking portion is connected to the water passage along the corresponding guide portion.

[0013] In some embodiments of the present application, an operating member is detachably connected to the connecting end, a buckle portion is formed on the operating member, and a clamping portion extending inward is formed on the connecting end; The buckle portion includes a plurality of claws dispersedly arranged along its circumference, and a plurality of limiting portions are formed on the inner wall of the clamping portion, and a connecting gap is formed between the limiting portions. During installation, each of the claws extends from the connecting gap to the inner side of the limiting portion, and then the operating member is rotated so that each of the claws is clamped to the corresponding limiting portion.

[0014] In some embodiments of the present application, a connecting side seat is formed on the peripheral side of the mounting opening, a connecting base is provided at the bottom of the shell, the connecting side seat is used to connect with the side wall of the body, and the connecting base is used to connect with the bottom wall of the body; A first buffer pad is arranged between the connecting side seat and the machine body, and a second buffer pad is arranged between the connecting base and the machine body.

[0015] In some embodiments of the present application, the impeller member is externally connected to a driving member, and the impeller member has a plurality of blade portions dispersedly arranged along its circumference, and an elastic reinforcement section is formed at the end of each blade portion, and the material of the elastic reinforcement section is rubber.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are: The washing machine involved in the present application has a residual discharge channel formed in the water flow channel of its drainage system, one end of the residual discharge channel is connected to the lowest position of the water flow channel, and the other end is connected to the drainage valve chamber; after the impeller part is started, under the drive of the impeller part, the sewage enters the water flow channel from the outlet pipe, passes through the water flow channel and the drainage valve chamber, and is discharged from the drainage pipe; the water at the bottom of the water flow channel can enter the drainage valve chamber from the residual discharge channel; the height of the first end of the residual discharge channel is higher than the second end, so that all the sewage can be discharged, avoiding the accumulation of sewage in the drainage system, and the sewage is discharged thoroughly to reduce odor.

[0017] In addition, the filter can filter the sewage output from the outlet pipe to the water channel. Impurities such as hair and lint can be blocked by the filter part, and impurities of smaller volume can be discharged directly to avoid pipe blockage, reduce maintenance frequency, and improve user experience.

[0018] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1It is a structural schematic diagram of an embodiment of the drainage system of the washing machine proposed by the present invention; Figure 2 It is a schematic diagram of the split structure of the drainage system; Figure 3 It is a schematic diagram of the water passage structure; Figure 4 It is a schematic diagram of the structure of the drain valve chamber; Figure 5 It is one of the schematic diagrams of the filter element structure; Figure 6 This is the second schematic diagram of the filter structure; Figure 7 It is one of the schematic diagrams of the operating part structure; Figure 8 This is the second schematic diagram of the operating part structure; Fig. 9 It is a schematic diagram of the drainage system cross section; Fig.10 is a schematic diagram of the connection base structure; Fig.11 It is a schematic diagram of the impeller structure; In the figure, 100. Shell; 110. Water outlet; 120. Drainage Department; 130, water passage; 131, guide portion; 132, first end; 1321, residual discharge passage; 133, connecting side seat; 1331, first buffer pad; 134, mounting opening; 1341, internal thread section; 135, first positioning portion; 140, drain valve chamber; 141, second end; 150, connecting base; 151, second buffer pad; 200, filter element; 210, connecting end; 211, clamping portion; 212, limiting portion; 220, water passing end; 221, overlapping portion; 2211, filtering channel; 222, first filtering hole; 230, middle part; 231, docking part; 240, filter unit; 250, auxiliary water passing part; 251, second filtering hole; 300, operating member; 310, buckle portion; 311, claw; 320, handle; 330, second positioning portion; 340, external thread section; 400, intermediate gasket; 500, impeller member; 510, rotating shaft; 520, blade portion; 530, elastic reinforcement section; 600. Electrical room. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0027] like Figure 1 , Figure 2 The present application proposes a washing machine, including a machine body and a drainage system. A washing cavity is formed in the machine body for washing clothes waiting for washing. The drainage system includes a drainage valve group, a water outlet pipe and a drainage pipe. The water outlet pipe and the drainage pipe are both connected to the drainage valve group. The drainage valve group is connected to the machine body, the water outlet pipe is connected to the washing cavity, and the drainage pipe is connected to the outside. Under the action of the drainage valve group, sewage is discharged from the washing cavity through the water outlet pipe and the drainage pipe.

[0028] The drain valve group includes a shell 100, an impeller component 500 and a filter component 200. A drain valve chamber 140, a water outlet 110 and a drain component 120 are formed in the shell 100. The water outlet 110 is detachably connected to the water outlet pipe, and the drain component 120 is detachably connected to the drain pipe. External threads are formed on the outside of the water outlet 110 and the drain component 120. The water outlet pipe is threadedly connected to the water outlet 110, and the drain component 120 is threadedly connected to the drain pipe.

[0029] refer to Figure 3 A water passage 130 is formed between the water outlet 110 and the drain valve chamber 140. The drain valve chamber 140 is connected to the drain portion 120. The cross-sectional shape of the water passage 130 is circular to reduce resistance.

[0030] The impeller member 500 is connected to the drain valve chamber 140. The impeller member 500 is externally connected to a driving member installed in the electrical room 600. The driving member drives the impeller member 500 to rotate. Under the guidance of the impeller member 500, water enters the water passage 130 from the water outlet portion 110 and is output from the water outlet portion 110 through the drain valve chamber 140.

[0031] A through channel is formed in the water outlet 110 and the drainage part 120. The water outlet 110 is located on one side of the shell 100. The lowest height of the channel in the water outlet 110 is higher than the lowest position of the drainage valve chamber 140 to ensure that sewage is discharged from the water outlet 110 into the drainage valve chamber 140.

[0032] refer to Figure 3 , Figure 4In order to discharge all the sewage in the water passage 130 and avoid the accumulation of sewage and the formation of odor and bacteria, a residual discharge channel 1321 is also formed in the water passage 130. One end of the residual discharge channel 1321 is connected to the lowest position of the water passage 130, and the other end is connected to the drain valve chamber 140.

[0033] The drainage portion 120 is located above the drainage valve chamber 140 , and the first end 132 of the residual drainage channel 1321 connected to the water passage 130 is not lower than the second end 141 of the residual drainage channel 1321 communicating with the drainage valve chamber 140 .

[0034] refer to Figure 2 , Figure 5 and Figure 6 During the washing process, impurities such as lint and hair may be mixed in. In order to prevent the above impurities from clogging the pipeline, a filter element 200 is installed in the water passage 130. The filter element 200 can be detachably installed in the water passage 130 to filter the passing sewage.

[0035] Combination Figure 4 The housing 100 is provided with an installation opening 134 which is perpendicular to the axis of the water passage 130 , and the filter element 200 is detachably connected to the installation opening 134 .

[0036] The size of the installation port 134 corresponds to the size of the water passage 130. One end of the filter element 200 is connected to the installation port 134, and the other end extends into the water passage 130 and is connected to the inner wall of the water passage 130 to ensure the stability of the filter element 200 during the drainage process.

[0037] refer to Figure 5 , Figure 6 , Fig. 9 A filter portion 240 is formed on the filter element 200 , and the filter portion 240 at least partially extends to the downstream of the water outlet portion 110 to filter the sewage output from the water outlet portion 110 .

[0038] The filter element 200 includes a connecting end 210 and a water passing end 220 . The connecting end 210 and the water passing end 220 are connected via a middle portion 230 . Both the connecting end 210 and the water passing end 220 are in the shape of circular connecting plates.

[0039] A seal is formed between the connection end 210 and the water passage 130 to prevent sewage from leaking from the installation opening 134 .

[0040] A lap joint 221 extending toward the connection end 210 is formed at the center of the water passing end 220 , and a filtering channel 2211 penetrating therethrough is formed on the lap joint 221 .

[0041] The edge of the filtering channel 2211 is a smooth rounded structure to reduce the resistance to water flow.

[0042] The filter part 240 is formed on the connection end 210, and the end of the filter part 240 extends into the filter channel 2211. The size of the filter part 240 is smaller than the filter channel 2211. A flow gap is formed between the filter part 240 and the filter channel 2211 to facilitate the flow of sewage.

[0043] In order to reduce the resistance of the filter part 240 and improve the flow effect of sewage, the filter part 240 is gradually narrowed along the direction from the connection end 210 to the water flow end 220.

[0044] The outer wall of the filter part 240 is formed with a concave and convex surface to increase the contact area with the sewage, improve the surface friction, and facilitate the attachment of thread, hair, etc. to the surface.

[0045] In some embodiments of the present application, an auxiliary water passing portion 250 is formed at one end of the water passing end 220 away from the overlapping portion 221, and an annular groove is formed between the auxiliary water passing portion 250 and the water passing end 220. The size of the auxiliary water passing portion 250 is adapted to the size of the water passing end 220. When the water passing end 220 is damaged by excessive water flow impact, the auxiliary water passing portion 250 can temporarily play an auxiliary filtering role.

[0046] At least one first filter hole 222 is formed on the water passing end 220, and second filter holes 251 adapted to the positions of the first filter holes 222 are formed on the auxiliary water passing portion 250. In the installed state, at least one group of first filter holes 222 and second filter holes 251 are located at the bottom of the water passing channel 130 to ensure that the sewage located upstream of the filter element 200 can be transported to the downstream of the filter element 200 to the greatest extent, thereby reducing the blocking effect on the water flow.

[0047] Combination Figure 3 , Figure 5 In order to facilitate the installation and positioning of the filter part 240 and prevent the filter element 200 from moving or rotating after being impacted by sewage, at least one guide portion 131 is formed on the inner wall of the water passage 130, and a docking portion 231 adapted to the position of the guide portion 131 is formed on the middle portion 230. During installation, the docking portion 231 is connected to the water passage 130 along the corresponding guide portion 131.

[0048] The guide portion 131 gradually contracts along the installation direction of the filter element 200, and plays a guiding role during the installation of the filter element 200. The end of the guide portion 131 is blocked. After the filter element 200 is installed in place, the docking portion 231 contacts the end of the guide portion 131 to prevent the filter element 200 from continuing to move downstream due to the impact of the water flow, thereby playing a limiting role.

[0049] In some embodiments of the present application, an operating member 300 is detachably connected to the connection end 210 to facilitate the installation and removal of the filter element 200. Before installing the filter element 200, the filter element 200 is first connected to the operating member 300, and then the user holds the operating member 300 to perform installation and removal operations on the filter element 200.

[0050] In order to reduce the use of fasteners such as fastening screws and improve the structural strength of the components, the operating member 300 and the filter member 200 are connected by snap-fit ​​connection.

[0051] Reference 5. Figure 7 A buckle portion 310 is formed on the operating member 300 , and a clamping portion 211 extending inward is formed on the connecting end 210 . During installation, the operating member 300 is clamped into the clamping portion 211 through the buckle portion 310 .

[0052] Specifically, the snap-on portion 310 includes a plurality of claws 311 dispersedly arranged along its circumference, each claw 311 is formed with a convex portion extending outward, and a plurality of limiting portions 212 are formed on the inner wall of the snap-on portion 211, each limiting portion 212 is also formed with a convex portion extending inward, and in the installed state, the convex portion on the claw 311 is restricted by the convex portion on the limiting portion 212, thereby realizing a detachable connection between the snap-on portion 310 and the snap-on portion 211.

[0053] A connection gap is formed between the limiting parts 212. During installation, each claw 311 extends from the connection gap between adjacent limiting parts 212 to the inner side of the limiting part 212. Then, the operating member 300 is rotated to clamp each claw 311 onto the corresponding limiting part 212 to achieve the connection and positioning between the buckle part 310 and the clamping part 211.

[0054] refer to Figure 2 An intermediate gasket 400 is provided between the operating member 300 and the filter member 200 to improve the tightness of the connection and also play a certain sealing role.

[0055] After the filter element 200 is installed, the operating element 300 can still rotate freely relative to the filter element 200 and is detachably connected to the installation opening 134 via threads, thereby improving the stability of the connection.

[0056] refer to Figure 4 , Figure 7 An internal thread segment 1341 is provided in the installation port 134, and gaps are formed between adjacent internal thread segments 1341 to avoid interference. An external thread segment 340 is formed on the outer periphery of the operating member 300. When the filter element 200 is installed, the external thread segment 340 on the operating member 300 is located in the gap formed between adjacent internal thread segments 1341.

[0057] refer to Figure 8The outer end of the operating member 300 is provided with a handle portion 320 for the convenience of the user to hold it.

[0058] Combination Figure 4 The specific installation process of the operating element 300 and the filter element 200 is as follows: First, the filter element 200 and the operating element 300 are connected together through the clamping portion 211 and the buckle portion 310 , and then the user holds the handle portion 320 to install the filter element 200 and the operating element 300 into the water passage 130 along the guide portion 131 .

[0059] After the filter element 200 is installed in place, the operating member 300 is rotated, and the external thread section 340 on the operating member 300 is rotated to cooperate with the internal thread section 1341 in the installation port 134, and the filter element 200 is fixed under the interaction of the guide portion 131 and the docking portion 231. The operating member 300 seals the filter element 200 in the water passage 130, thereby improving the stability of the filter element 200.

[0060] The specific installation process of the operating element 300 and the filter element 200 is as follows: Rotate the operating member 300 in the opposite direction, and the external thread section 340 on the operating member 300 will be separated from the internal thread section 1341 in the installation opening 134. In this state, the filter element 200 and the operating member 300 are connected together through the clamping portion 211 and the buckle portion 310. Pull the operating member 300 outward to remove the filter element 200.

[0061] This connection method between the operating member 300 and the filter element 200 facilitates the disassembly and assembly of the filter element 300, and can reduce the design of fastening screws, fastening holes, etc., thereby improving the integrity of the components, making the structural strength stronger, and facilitating assembly and disassembly without the need to tighten the fastening screws, etc., and thus being more efficient.

[0062] In order to facilitate the user to observe whether the installation is in place, a first positioning portion 135 is formed on the outer side of the installation port 134, and a second positioning portion 330 is formed on the operating member 300. When the operating member 300 is rotated until the second positioning portion 330 contacts the first positioning portion 135, it means that the operating member 300 is rotated into place, thereby preventing the operating member 300 from rotating excessively.

[0063] refer to Figure 1 , Fig.10 In other embodiments of the present application, the drain valve group is respectively connected and fixed to the side wall and the bottom wall of the body to ensure the stability of the connection. The connecting side seat 133 is arranged on the surrounding side of the mounting port 134 to realize the connection and fixation of the shell 100. The connecting base 150 is arranged at the bottom of the shell 100. The connecting base 150 is mainly used for the connection and fixation of the electrical room 600.

[0064] In order to reduce vibration, lower noise and increase the service life of components, a first buffer pad 1331 is provided between the connecting side seat 133 and the machine body, and a second buffer pad 151 is provided between the connecting base 150 and the machine body.

[0065] The first buffer pad 1331 and the second buffer pad 151 are both made of rubber material to reduce the transmission of vibration during the operation of the drain valve group. The thickness of the first buffer pad 1331 and the second buffer pad 151 can be set to 2 mm or more to ensure the buffering and vibration reduction effect.

[0066] The first buffer pad 1331 and the second buffer pad 151 are realized by an integrated molding method; they can be molded by a TPE, TPV+PP soft and hard composite method, for example, by two-color injection molding. In addition to changing the natural frequency of the drain pump, the first buffer pad 1331 and the second buffer pad 151 can also avoid and isolate the vibration of the entire washing machine caused by the vibration of the drain valve group itself.

[0067] refer to Fig.11 In some embodiments of the present application, in order to improve the drainage efficiency of the impeller member 500, the impeller member 500 is provided with a plurality of blade portions 520 dispersed along its circumference, and an elastic reinforcement section 530 is formed at the end of each blade portion 520, and the material of the elastic reinforcement section 530 is rubber.

[0068] The material of the impeller component 500 is TPV, and the material of the elastic reinforcement section 530 thereon is PP. The elastic reinforcement section 530 can not only increase the size of the impeller and reduce the amount of residual water; at the same time, the impeller component 500 made of TPV+PP material can also change the natural frequency of the drainage pump, reduce the eddy current resistance during drainage, and avoid the frog-like sound generated in the drainage chamber when there is a small amount of residual water.

[0069] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0070] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A washing machine, characterized in that: include: A body having a washing cavity formed therein; A drainage system, comprising a drainage valve group, a water outlet pipe and a drainage pipe, wherein the drainage valve group is connected to the machine body, and the water outlet pipe is communicated with the washing inner cavity; Wherein, the drain valve group includes: A housing having a drain valve chamber, a water outlet connected to the water outlet pipe, and a drain portion connected to the drain pipe, a water passage formed between the water outlet and the drain valve chamber, and the drain valve chamber communicating with the drain portion; an impeller member connected to the drain valve chamber, under the action of the impeller member, water enters the water passage from the water outlet portion, and is output from the water outlet portion through the drain valve chamber; A filter element, which is detachably installed in the water passage and plays a filtering role; Wherein, a residual drainage channel is also formed in the water passage, one end of the residual drainage channel is connected to the lowest position of the water passage, and the other end is connected to the drainage valve chamber.

2. The washing machine according to claim 1, characterized in that: The water outlet is located at one side of the shell, the drainage part is located above the drainage valve chamber, and the first end of the residual drainage channel connected to the water passage is not lower than the second end of the residual drainage channel connected to the drainage valve chamber.

3. The washing machine according to claim 1, characterized in that: The cross-section of the water passage is circular, a mounting opening perpendicular to the axis of the water passage is formed on the shell, the filter element is detachably connected to the mounting opening, a filter portion is formed on the filter element, and the filter portion at least partially extends downstream of the water outlet.

4. The washing machine according to claim 1, characterized in that: The filter element comprises a connecting end and a water passing end, wherein the connecting end and the water passing end are connected via a middle portion; A sealing member is formed between the connecting end and the water passage; The water passing end is formed with an overlap portion extending toward the connecting end, the overlap portion is formed with a penetrating filter channel, the filter portion is formed on the connecting end, and a terminal end of the filter portion extends into the filter channel.

5. The washing machine according to claim 4, characterized in that: The filter portion gradually contracts along a direction from the connection end to the water flow end, and an outer wall of the filter portion is formed with a concave-convex surface.

6. The washing machine according to claim 4, characterized in that: An auxiliary water passing portion is formed at one end of the water passing end away from the overlapping portion, an annular groove is formed between the auxiliary water passing portion and the water passing end, at least one first filter hole is formed on the water passing end, and second filter holes adapted to the positions of each of the first filter holes are formed on the auxiliary water passing portion. In the installed state, at least one group of the first filter holes and the second filter holes are located at the bottom of the water passing channel.

7. The washing machine according to claim 4, characterized in that: At least one guide portion is formed on the inner wall of the water passage, and a docking portion adapted to the position of the guide portion is formed on the middle portion. During installation, the docking portion is connected to the water passage along the corresponding guide portion.

8. The washing machine according to claim 4, characterized in that: An operating member is detachably connected to the connecting end, a buckle portion is formed on the operating member, and a clamping portion extending inward is formed on the connecting end; The buckle portion includes a plurality of claws dispersedly arranged along its circumference, and a plurality of limiting portions are formed on the inner wall of the clamping portion, and a connecting gap is formed between the limiting portions. During installation, each of the claws extends from the connecting gap to the inner side of the limiting portion, and then the operating member is rotated so that each of the claws is clamped to the corresponding limiting portion.

9. The washing machine according to claim 4, characterized in that: A connecting side seat is formed on the peripheral side of the installation opening, and a connecting base is provided at the bottom of the shell, wherein the connecting side seat is used to connect with the side wall of the machine body, and the connecting base is used to connect with the bottom wall of the machine body; A first buffer pad is arranged between the connecting side seat and the machine body, and a second buffer pad is arranged between the connecting base and the machine body.

10. The washing machine according to claim 1, characterized in that: The impeller component is externally connected to a driving component. The impeller component is provided with a plurality of blade parts dispersedly arranged along its circumference. An elastic reinforcement section is formed at the end of each blade part. The material of the elastic reinforcement section is rubber.

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