Circulating pump and washing machine

Abstract

The utility model provides a circulating pump and a washing machine. The circulating pump comprises a shell, a motor, an impeller and a blocking structure. And an opening is formed in the mounting end of the shell. And the motor is assembled to the mounting end. And an output shaft of the motor penetrates through the opening and extends into the shell. The impeller is connected to the output shaft. The motor comprises a first surface facing the impeller, and the impeller comprises a second surface facing the motor. At least one of the first surface and the second surface is provided with the blocking structure. And by arranging the blocking structure, sundries in the shell can be effectively prevented from being clamped between the impeller and the motor, blockage of the circulating pump is avoided, and the safety of the circulating pump is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pump structures, and in particular to a circulation pump and a washing machine. Background Art

[0002] Circulation pumps are widely used in fluid systems. The motor of the circulation pump drives the impeller to drive the fluid to move and reuse the fluid. Taking a washing machine as an example, it can achieve internal circulation spraying through a circulation pump to improve the washing ratio. At present, traditional circulation pumps are prone to clogging, and debris in the casing will get stuck in the impeller, causing damage to the circulation pump, making the safety performance of the circulation pump poor. Utility Model Content

[0003] The present invention provides a circulation pump and a washing machine to solve related technical problems.

[0004] The present disclosure provides a circulation pump, comprising a housing, a motor, an impeller and a blocking structure;

[0005] The mounting end of the housing is provided with an opening, the motor is assembled to the mounting end, the output shaft of the motor passes through the opening and extends into the housing, and the impeller is connected to the output shaft;

[0006] The motor includes a first surface facing the impeller, the impeller includes a second surface facing the motor, and at least one of the first surface and the second surface is provided with the blocking structure.

[0007] Further, the blocking structure is disposed on the first surface and extends toward the second surface, and / or the blocking structure is disposed on the second surface and extends toward the first surface.

[0008] Furthermore, the blocking structure includes a motor blocking wall arranged on the first surface and an impeller blocking wall arranged on the second surface, and the motor blocking wall and the impeller blocking wall are staggered in the radial direction of the output shaft and extend relatively to form a blocking maze.

[0009] Furthermore, the number of the motor retaining wall and / or the impeller retaining wall is set to be multiple.

[0010] Furthermore, the blocking structure is integrally formed with the motor, and / or the blocking structure is integrally formed with the impeller.

[0011] Furthermore, the blocking structure is ring-shaped.

[0012] Furthermore, the impeller includes a disc body, an assembly column arranged at the center of the disc body, and blades connecting the disc body and the assembly column, and the side edges of the blades are arranged obliquely relative to the disc body.

[0013] Furthermore, the side includes a first section connected to the assembly column and a second section connected to the disk body, and the inclination angle of the first section is smaller than that of the second section.

[0014] Furthermore, the impeller includes an impeller body and a metal component fixed to the impeller body, and the metal component is assembled to the output shaft.

[0015] The present disclosure also provides a washing machine, comprising the above-mentioned circulation pump.

[0016] The circulating pump disclosed in the present invention has good anti-blocking performance and high safety. By arranging the blocking structure on at least one of the first surface and the second surface, the blocking structure is located between the motor and the impeller to play a blocking role and prevent the debris in the housing from entering through the gap between the motor and the impeller. Since the amount of debris entering the gap is reduced, the probability of the impeller getting stuck during the rotation process is reduced, the circulating pump is not easily blocked, and the safety of the circulating pump is improved. The washing machine disclosed in the present invention has better working stability and user experience.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 is a cross-sectional schematic diagram of a circulation pump in an exemplary embodiment of the present disclosure;

[0020] Figure 2 yes Figure 1 A partial enlarged view of the medium circulation pump;

[0021] Figure 3 is a structural diagram of an impeller in an exemplary embodiment of the present disclosure.

[0022] Explanation of the accompanying drawings: shell, 10; mounting end, 100; opening, 11; water inlet, 12; drain outlet, 13; spray outlet, 14; motor, 20; first surface, 200; output shaft, 21; impeller, 30; impeller body, 301; metal part, 302; second surface, 300; disk, 31; connecting column, 32; blade, 33; side, 331; first section, 3311; second section, 3312; blocking structure, 40; blocking maze, 400; motor retaining wall, 41; impeller retaining wall 42. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0024] The terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which the disclosure belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two and more than two. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0025] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms of "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0026] Next, the embodiments of this specification are described in detail.

[0027] When the circulating pump is working, debris in the housing can easily enter the gap between the impeller and the motor, and the impeller can easily get stuck during rotation, causing damage to the circulating pump. Taking a washing machine as an example, cloth strips, paper clips, hair, etc. during the washing process can easily cause blockage of the circulating pump, causing damage to the circulating pump and causing the washing machine to be unable to be used normally. The present disclosure provides a circulating pump to solve the related technical problems.

[0028] like Figure 1As shown, the present disclosure provides a circulation pump, including a housing 10, a motor 20, an impeller 30 and a blocking structure 40. The mounting end 100 of the housing 10 is provided with an opening 11. The motor 20 is assembled to the mounting end 100, the output shaft 21 of the motor 20 extends into the housing 10 through the opening 11, and the impeller 30 is connected to the output shaft 21. The motor 20 includes a first surface 200 facing the impeller 30, and the impeller 30 includes a second surface 300 facing the motor 20. At least one of the first surface 200 and the second surface 300 is provided with a blocking structure 40.

[0029] The blocking structure 40 is disposed on at least one of the first surface 200 and the second surface 300, so that the blocking structure 40 is located between the motor 20 and the impeller 30, so as to play a blocking role and prevent the debris in the housing 10 from entering through the gap between the motor 20 and the impeller 30. Since the amount of debris entering the gap is reduced, the motor 20 and the impeller 30 are not easily stuck during the rotation process, and the circulating pump is not easily blocked, thereby improving the safety of the circulating pump.

[0030] The present disclosure also provides a washing machine, comprising the above-mentioned circulating pump. Since the circulating pump of the present disclosure is not easy to be blocked and has high safety, the washing machine of the present disclosure has good working stability and user experience.

[0031] The type of washing machine disclosed in the present invention is not limited. In one embodiment, the washing machine may be a single-motor spray-type washing machine. In this embodiment, if Figure 1 As shown, the housing 10 may be provided with a water inlet 12, a drain outlet 13 and a spray outlet 14. The output shaft 21 can rotate in both directions to drive the impeller 30 to rotate in both directions, respectively realizing the drainage function and the spraying function. The washing machine with the spraying function has a higher cleaning ratio, further improving the user experience. The forward and reverse rotation of a single motor 20 is used to realize drainage and spraying, reducing the size and cost of the washing machine.

[0032] like Figure 2 As shown, in one embodiment, the impeller 30 may include an impeller body 301 and a metal part 302 fixed to the impeller body 301, and the metal part 302 is assembled to the output shaft 21. The metal part 302 has a high strength, which can improve the assembly strength of the output shaft 21 and the impeller 30, maintain the coaxiality of the output shaft 21 and the impeller 30, prevent the impeller 30 from being flattened, and improve the assembly accuracy.

[0033] In this embodiment, due to the improvement of the overall assembly accuracy of the circulation pump, the position of the blocking structure 40 between the first surface 200 and the second surface 300 is relatively stable. Under the premise of not affecting the normal rotation of the impeller 30, the volume of the blocking structure 40 can be enlarged so that it occupies more space between the first surface 200 and the second surface 300, so as to improve the blocking effect of the blocking structure 40 on debris and further improve the safety of the circulation pump.

[0034] like Figure 2 and Figure 3 As shown, the impeller 30 includes a disc body 31, an assembly column 32 and blades 33. The assembly column 32 is arranged at the center of the disc body and matches with the output shaft 21. The blades 33 are connected between the disc body 31 and the assembly column 32. The number of blades 33 is not limited, and can be four. The distribution of the blades 33 is also not limited, and can be evenly distributed along the circumferential direction.

[0035] In one embodiment, the side edge 331 of the blade 33 can be tilted relative to the disc body 31. Due to the tilted side edge 331, the blade 33 of the present disclosure has a smaller volume than the traditional rectangular blade, reducing the space occupied by the blade 33 in the housing 10. The distance between the blade 33 and the related structure in the housing 10 is increased, which can prevent the blade 33 from being stuck by debris in the housing 10. At the same time, since the impeller 30 has an increased bevel at the edge, the edge water pressure is reduced, the impact on the housing 10 is reduced, and the operating noise of the circulation pump is reduced.

[0036] Taking the pressure regulating rib (not shown in the figure) as an example, the pressure regulating rib is a convex structure in the housing 10, located above the impeller 30, and can play a role in regulating water pressure. Since the side edge 331 is inclined, the distance between the side edge 331 and the pressure regulating rib is increased, and debris in the housing 10 is not easily stuck between the side edge 331 and the pressure regulating rib. The bevel at the edge reduces the pressure of the fluid, the pressure regulating rib is less impacted, and the operating noise of the circulating pump is reduced.

[0037] In one embodiment, the side edge 331 may include a first section 3311 and a second section 3312. The first section 3311 is connected to the assembly column 32, and the second section 3312 is connected to the disk body 31. The first section 3311 has a smaller inclination angle than the second section 3312. The side edge 331 has different inclination angles, which reduces the space while maintaining a certain volume to push the fluid.

[0038] Since the side edge 331 is provided with two sections with different inclination angles, the inclination angle of the side edge 331 is not too large, which causes the volume of the blade 33 to be too small, so that the fluid cannot be pushed. At the same time, the inclination angle of the side edge 331 is not too small, which causes the volume of the blade 33 to be too large, making the circulation pump easy to be blocked and making a lot of noise. In other embodiments, the inclination angles of the side edges 331 are the same, which is simple to manufacture and has a low production cost.

[0039] like Figure 2As shown, the blocking structure 40 may be disposed only on the first surface 200 or only on the second surface 300. The first surface 200 and the second surface 300 may also be both provided with the blocking structure 40. When the blocking structure 40 is disposed on the first surface 200, the blocking structure 40 extends toward the second surface 300. When the blocking structure 40 is disposed on the second surface 300, the blocking structure 40 extends toward the first surface 200.

[0040] The blocking structure 40 is extended to form a retaining wall structure, which has a simple structure and is easy to manufacture. To ensure that the impeller 30 can rotate normally, a certain gap is left between the blocking structure 40 and the surface opposite to it to avoid interference when the impeller 30 rotates. The specific structural form of the blocking structure 40 is not limited. In one embodiment, the blocking structure 40 can be annular. The annular blocking structure 40 can completely block the side, reduce the probability of the circulation pump being blocked, and improve the safety of the circulation pump.

[0041] When the blocking structure 40 is disposed on the first surface 200, the blocking structure 40 can be integrally formed with the motor 20. When the blocking structure 40 is disposed on the second surface 300, the blocking structure 40 can be integrally formed with the impeller 30. The integrally formed structure improves production efficiency. The blocking structure 40 can also be assembled separately from the first surface 200 or the second surface 300, and the structure of the blocking structure 40 can be freely selected according to factors such as the shapes of the motor 20 and the impeller 30, thereby improving the versatility of the circulating pump.

[0042] like Figure 2 As shown, the blocking structure 40 may only include the motor retaining wall 41 disposed on the first surface 200, or only include the impeller retaining wall 42 disposed on the second surface 300. The blocking structure 40 may also include both the motor retaining wall 41 and the impeller retaining wall 42. By arranging the blocking structure 40 on both the motor 20 and the impeller 30, the anti-blocking performance of the circulation pump is further enhanced, and the safety of the circulation pump is improved.

[0043] In the embodiment where the blocking structure 40 only includes the motor retaining wall 41, the number of the motor retaining wall 41 may be one or more. In the embodiment where the blocking structure 40 only includes the impeller retaining wall 42, the number of the impeller retaining wall 42 may also be one or more. In the embodiment where the blocking structure 40 includes both the motor retaining wall 41 and the impeller retaining wall 42, the number of one of the motor retaining wall 41 and the impeller retaining wall 42 may be single and the number of the other may be multiple. The number of the motor retaining wall 41 and the impeller retaining wall 42 may also be multiple.

[0044] By setting up multiple retaining wall structures, the protective effect of the blocking structure 40 can be improved, the probability of the circulating pump being blocked can be reduced, and the circulating pump can be prevented from being damaged due to being stuck. Alternatively, by setting up a single retaining wall structure, the weight of the circulating pump can be reduced and the cost can be reduced. The specific number of the motor retaining wall 41 and the impeller retaining wall 42 is not limited.

[0045] When there are multiple motor retaining walls 41, multiple motor retaining walls 41 can be arranged at intervals along the radial direction of the output shaft 21. When there are multiple impeller retaining walls 42, multiple impeller retaining walls 42 can be arranged at intervals along the radial direction of the impeller 30. Since the connection between the motor 20 and the impeller 30 is located at the center, debris needs to pass through multiple retaining walls arranged at intervals to reach the connection, so the circulation pump is not easily blocked, and the safety performance of the circulation pump is improved.

[0046] like Figure 2 As shown, in the embodiment where the blocking structure 40 includes both the motor blocking wall 41 and the impeller blocking wall 42, the motor blocking wall 41 and the impeller blocking wall 42 can be staggered and relatively extended to form a blocking maze 400. The blocking maze 400 is relatively tortuous, and it is difficult for debris to pass through the blocking maze 400 to reach the connection between the motor 20 and the impeller 30, so the circulating pump is not easily stuck, and the safety performance is relatively high.

[0047] In the embodiment where the motor retaining wall 41 and the impeller retaining wall 42 form a blocking maze 400, the number of the motor retaining wall 41 and the impeller retaining wall 42 may both be one, or one of them may be single and the other may be multiple. The number of the motor retaining wall 41 and the impeller retaining wall 42 may both be multiple, for example, the number of the motor retaining wall 41 and the impeller retaining wall 42 may both be three. By providing multiple retaining walls, the complexity of the blocking maze 400 can be increased, and the anti-blocking performance of the circulating pump can be improved. When there is only one motor retaining wall 41 and one impeller retaining wall 42, the blocking maze 400 can also play a certain blocking role, and can save materials and reduce costs.

[0048] The above is only a preferred embodiment of the present disclosure, and does not limit the present disclosure in any form. Moreover, the above embodiments can complement each other in the absence of conflict. Although the present disclosure has been disclosed as a preferred embodiment as above, it is not used to limit the present disclosure. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment of equivalent changes without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still falls within the scope of the technical solution of the present disclosure.

Claims

1. A circulation pump, characterized in that: include: Casing, motor, impeller and blocking structure; The mounting end of the housing is provided with an opening, the motor is assembled to the mounting end, the output shaft of the motor passes through the opening and extends into the housing, and the impeller is connected to the output shaft; The motor includes a first surface facing the impeller, the impeller includes a second surface facing the motor, and at least one of the first surface and the second surface is provided with the blocking structure.

2. The circulating pump according to claim 1, characterized in that: The blocking structure is disposed on the first surface and extends toward the second surface, and / or the blocking structure is disposed on the second surface and extends toward the first surface.

3. The circulating pump according to claim 2, characterized in that: The blocking structure includes a motor blocking wall arranged on the first surface and an impeller blocking wall arranged on the second surface. The motor blocking wall and the impeller blocking wall are staggered in the radial direction of the output shaft and extend relatively to form a blocking maze.

4. The circulating pump according to claim 3, characterized in that: The number of the motor retaining wall and / or the impeller retaining wall is set to be multiple.

5. The circulating pump according to claim 1, characterized in that: The blocking structure is integrally formed with the motor, and / or the blocking structure is integrally formed with the impeller.

6. The circulating pump according to claim 1, characterized in that: The blocking structure is ring-shaped.

7. The circulating pump according to claim 1, characterized in that: The impeller comprises a disc body, an assembly column arranged at the center of the disc body, and blades connecting the disc body and the assembly column, and the side edges of the blades are arranged obliquely relative to the disc body.

8. The circulating pump according to claim 7, characterized in that: The side edge includes a first section connected to the assembly column and a second section connected to the disk body, and the inclination angle of the first section is smaller than that of the second section.

9. The circulation pump according to claim 1, characterized in that: The impeller includes an impeller body and a metal component fixed to the impeller body, and the metal component is assembled to the output shaft.

10. A washing machine, characterized in that: include: A circulating pump as claimed in any one of claims 1 to 9.

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