Water pump and laundry treatment device

Abstract

The embodiment of the present application relates to a kind of water pump and clothes processing device, including pump shell, the pump shell has cavity, the cavity is divided into filter cavity and impeller cavity by partition;The cavity wall of the impeller cavity has circulation port for being communicated with the drum inner cavity of clothes processing device and drainage port being communicated with outside, the circulation port is spaced apart from the drainage port;The side of the partition close to the impeller cavity has buffer groove, and the buffer groove is located between the circulation port and the drainage port, and the buffer groove extends along the direction of the circulation port to the drainage port, so that the water flow in the impeller cavity forms turbulent flow state when passing through the buffer groove, that is, after washing water forms vortex, washing water can avoid continuing to flow along the flow direction to a certain extent, to prevent the phenomenon of water leakage between circulation port and drainage port.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of household appliances, and in particular to a water pump and a clothes treatment device. BACKGROUND

[0002] In the related art, a clothes treatment device can use one water pump to implement the operation of circulating washing water or discharging washing water. That is, by changing the rotation direction of the impeller of the water pump, the washing water is discharged from the drain port to implement draining or the washing water is discharged from the circulation port to implement water circulation.

[0003] However, when the draining operation is needed, the washing water can enter the circulation port, or when the water circulation operation is needed, the washing water can enter the drain port, thereby causing the water to flow between the drain port and the circulation port. SUMMARY

[0004] To solve the above technical problems or at least partially solve the above technical problems, embodiments of the present application provide a water pump and a clothes treatment device.

[0005] In a first aspect, embodiments of the present application provide a water pump, comprising a pump shell, the pump shell having a cavity, the cavity being divided into a filter cavity and an impeller cavity by a partition; the cavity wall of the impeller cavity has a circulation port for communicating with the inner cavity of a drum of a clothes treatment device and a drain port for communicating with the outside, the circulation port and the drain port being arranged at intervals.

[0006] One side of the partition close to the impeller cavity has a buffer groove, the buffer groove being located between the circulation port and the drain port and extending along the direction from the circulation port to the drain port.

[0007] In this technical solution, by arranging the buffer groove extending along the direction from the circulation port to the drain port on the side of the partition in the cavity of the pump shell facing the impeller cavity, when the washing water in the impeller cavity flows through the buffer groove under the driving of the impeller, the washing water can form a turbulent flow, that is, after the washing water forms a vortex, the washing water can to some extent avoid flowing along the original flow direction, thereby preventing the water from flowing between the circulation port and the drain port. That is, when the draining operation is performed, the washing water flowing through the drain port continues to flow onto the buffer groove and forms a turbulent flow, the washing water after forming the turbulent flow cannot continue to flow to the circulation port, thereby causing the water to flow between the circulation port and the drain port; or when the water circulation operation is performed, the washing water flowing through the circulation port continues to flow onto the buffer groove and forms a turbulent flow, the washing water cannot continue to flow to the drain port, thereby causing the water to flow between the circulation port and the drain port.

[0008] Optionally, the buffer groove is an arc-shaped groove extending along the circumferential direction of the impeller cavity.

[0009] In the technical scheme, the arc-shaped groove is arranged coaxially with the center of the pump shell, so that the inside of the impeller cavity is more beautiful and regular.

[0010] Optionally, the center of the circle where the arc-shaped groove is located is coaxially arranged with the center of the impeller cavity.

[0011] In the technical scheme, the center of the arc-shaped groove is coaxially arranged with the center of the pump shell, so that the inside of the impeller cavity is more beautiful and regular.

[0012] Optionally, the buffer grooves include at least two, and the at least two buffer grooves are sequentially arranged along the radial direction of the impeller cavity.

[0013] In the technical scheme, the buffer grooves include at least two sequentially arranged along the radial direction of the impeller cavity, so that the at least two buffer grooves can jointly buffer and disturb the washing water to further ensure that the circulating port and the drainage port do not occur water stringing.

[0014] Optionally, the width dimension of the buffer groove along the radial direction of the impeller cavity ranges from 1mm to 2mm.

[0015] In the technical scheme, the width dimension of the buffer groove along the radial direction of the impeller cavity is reasonably set, so that a proper amount of washing water flowing through the buffer groove can form turbulence and vortex, thereby reducing the flow rate of the washing water flowing continuously to a certain extent, and preventing the phenomenon of water stringing between the circulating port and the drainage port.

[0016] Optionally, the depth dimension of the buffer groove along the axial direction of the impeller cavity is not greater than 3mm.

[0017] In the technical scheme, the dimension of the buffer groove along the axial direction of the impeller cavity is reasonably set, so that a proper amount of washing water flowing through the buffer groove can form turbulence and vortex, thereby reducing the flow rate of the washing water flowing continuously to a certain extent, and preventing the phenomenon of water stringing between the circulating port and the drainage port.

[0018] Optionally, a water-blocking boss is arranged on the cavity wall of the impeller cavity, the water-blocking boss is located between the drainage port and the circulating port, and the buffer groove is arranged on the water-blocking boss.

[0019] In the technical scheme, the water-blocking boss is arranged on the cavity wall of the impeller cavity, and the buffer groove is arranged on the water-blocking boss, so that the washing water can be disturbed by the buffer groove to form vortex and block the washing water from flowing continuously to cause water stringing, and the washing water can also be blocked by the water-blocking boss to prevent water stringing.

[0020] That is, when the draining operation is performed, the washing water is blocked on the side surface of the water-blocking boss close to the draining port after flowing through the draining port, so that the washing water is prevented from flowing into the circulating port to cause water leakage; or when the circulating water operation is performed, the washing water is blocked on the side surface of the water-blocking boss close to the circulating port after flowing through the circulating port, so that the washing water is prevented from flowing into the draining port to cause water leakage.

[0021] That is, through the double effects of the water-blocking boss and the buffer groove, the water leakage of the circulating port and the draining port can be further ensured.

[0022] Optionally, the water-blocking boss comprises a first water-blocking part and a second water-blocking part arranged in sequence in the direction from the center of the impeller cavity to the cavity wall of the impeller cavity, and the buffer groove is arranged on the first water-blocking part.

[0023] The height of the first water-blocking part in the axial direction of the impeller cavity is less than the height of the second water-blocking part in the axial direction of the impeller cavity.

[0024] In the technical scheme, the water-blocking boss comprises the first water-blocking part and the second water-blocking part, and the height of the first water-blocking part and the second water-blocking part in the axial direction of the impeller cavity is different, so that the first water-blocking part and the second water-blocking part can be suitable for blocking the washing water at different water levels in the impeller cavity, thereby preventing the water leakage of the circulating port and the draining port.

[0025] Optionally, the first water-blocking part is arranged in parallel with the impeller in the impeller cavity.

[0026] In the technical scheme, the first water-blocking part is arranged in parallel with the impeller, so that the first water-blocking part does not interfere with the rotation of the impeller, and the arrangement of the first water-blocking part and the impeller is more reasonable and regular.

[0027] Optionally, the gap between the first water-blocking part and the impeller ranges from 3 mm to 5 mm.

[0028] In the technical scheme, the gap between the first water-blocking part and the impeller is reasonably arranged, so that the gap between the first water-blocking part and the impeller is not too large to cause insufficient pump head, and the gap is not too small to easily accumulate sundries.

[0029] Optionally, at least one side surface of the second water-blocking part close to the draining port and / or at least one side surface close to the circulating port is formed as a water-blocking surface.

[0030] In the technical scheme, the side surface of the second water separation part near the drain port and / or the side surface of the second water separation part near the circulating port is formed as a water blocking surface, so that when the drain operation is performed, the washing water is blocked on the water blocking surface formed by the side surface of the second water separation part near the drain port after flowing through the drain port, thereby avoiding the washing water from flowing into the circulating port, and / or when the circulating water operation is performed, the washing water is blocked on the water blocking surface formed by the side surface of the second water separation part near the circulating port after flowing through the circulating port, thereby avoiding the washing water from flowing into the drain port.

[0031] Optionally, the water blocking surface near the drain port is an arc surface protruding towards the drain port, and / or the water blocking surface near the circulating port is an arc surface protruding towards the circulating port.

[0032] In the technical scheme, the water blocking surface near the drain port is an arc surface protruding towards the drain port and / or the water blocking surface near the circulating port is an arc surface protruding towards the circulating port, so that the water blocking surface can form an effective water blocking surface for guiding the water, so that the washing water can be guided towards the circulating port or the drain port while being blocked by the water blocking surface, so that the washing water is discharged from the required drain port or the circulating port, thereby avoiding the water from flowing into the drain port and the circulating port.

[0033] Optionally, a guide gap is arranged at a position of the water separation protrusion near the circulating port, and the width of the guide gap gradually decreases in a direction from a water inlet of the guide gap to a bottom of the guide gap.

[0034] In the technical scheme, the guide gap is arranged, and the width of the guide gap gradually decreases in the direction from the water inlet to the bottom, so that the guide gap can guide the washing water, thereby preventing the water from flowing into the drain port and the circulating port.

[0035] Optionally, the water separation protrusion and the pump shell are integrally formed.

[0036] In the technical scheme, the water separation protrusion and the pump shell are integrally formed, thereby saving the process and increasing the strength of the pump shell.

[0037] In a second aspect, an embodiment of the present application provides a laundry treatment device, which comprises a shell, a drum arranged in the shell, and a water pump arranged between the shell and the drum. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of embodiments of the application.

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0040] Figures 1-2 The appearance view of the water pump in different viewing angles according to the embodiments of the present application;

[0041] Figure 3 The front view of the water pump according to the embodiments of the present application;

[0042] Figure 4 The Figure 3 The cross-sectional view at A-A;

[0043] Figure 5 The side view of the water pump according to the embodiments of the present application;

[0044] Figure 6 The Figure 5 The cross-sectional view at B-B.

[0045] Wherein, 1, pump shell; 11, impeller cavity; 111, drainage port; 112, circulation port; 113, water barrier boss; 114, water blocking surface; 115, buffer groove; 116, first water barrier part; 117, second water barrier part; 118, flow guide notch; 12, filter cavity; 121, filter port; 122, partition; 123, through hole; 2, impeller; 3, limiting hook. DETAILED DESCRIPTION

[0046] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present application, the solutions of the embodiments of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0047] In the following description, many specific details are set forth in order to provide a thorough understanding of the embodiments of the present application, but the embodiments of the present application can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some of the embodiments of the present application, not all the embodiments.

[0048] Generally, a clothes treatment apparatus, such as a washing machine, etc., includes a housing, a drum provided in the housing, and a water pump provided between the drum and the housing, and after washing water in the drum is delivered into an impeller cavity of the water pump, the water pump can be used to discharge the water in the impeller cavity to the outside of the washing machine through a drainage port of the water pump to perform a drainage operation, or to discharge the water in the impeller cavity to a drum inner cavity through a circulation port of the water pump to perform a circulating water operation. That is, the water pump used in the current washing machine is a circulating and draining integrated water pump.

[0049] Specifically, the current circulating drainage integrated water pump used in the washing machine comprises a motor, a pump shell, and an impeller arranged in an impeller cavity of the pump shell. The motor can be a brushless direct current motor. The motor is drivingly connected with the impeller. The pump shell is provided with a drainage port communicating with the outside and a circulating port communicating with an inner cavity of a drum. For example, when the drainage operation is needed, the motor can drive the impeller to rotate clockwise, thereby driving the water delivered into the impeller cavity to be discharged through the drainage port. When the circulating water operation is needed, the motor can drive the impeller to rotate counterclockwise, thereby driving the water delivered into the impeller cavity to be discharged through the circulating port and flow back into the inner cavity of the drum. That is, the water flow direction is changed by driving the impeller to rotate forward and backward by the motor, thereby realizing the circulating water operation or the drainage operation.

[0050] However, in the related art, since one water pump is used to realize the circulating water operation or the drainage operation, the water head difference or the liquid level difference is insufficient, and thus the drainage port and the circulating port are prone to work simultaneously, i.e., the water is discharged from the circulating port during the drainage operation or the water is discharged from the drainage port during the circulating water operation, resulting in the water stringing phenomenon of the drainage port and the circulating port.

[0051] Embodiment One

[0052] In order to effectively solve the problem of water stringing of the drainage port and the circulating port in the related art, with reference to Figures 1-6 The water pump provided by the embodiment can be used in a laundry treatment device such as a washing machine, and specifically, the water pump can be a centrifugal pump. The centrifugal pump comprises a pump shell 1, a motor, and an impeller 2. Specifically, the drainage operation can be realized by driving the impeller 2 to rotate clockwise by the motor, and the circulating water operation can be realized by driving the impeller 2 to rotate counterclockwise by the motor, or the drainage operation can be realized by driving the impeller 2 to rotate counterclockwise by the motor, and the circulating water operation can be realized by driving the impeller 2 to rotate clockwise by the motor, depending on the internal structure of the laundry treatment device.

[0053] In the embodiment, the drainage operation is realized by driving the impeller 2 to rotate clockwise, and the circulating water operation is realized by driving the impeller 2 to rotate counterclockwise. Hereinafter, the drainage operation is realized by driving the impeller 2 to rotate clockwise, and the circulating water operation is realized by driving the impeller 2 to rotate counterclockwise.

[0054] Specifically, the pump shell 1 of the water pump of the embodiment is provided with an impeller cavity 11 for placing the impeller 2 and a filtering cavity 12 for water inlet. A partition 122 in the pump shell 1 divides the cavity of the pump shell 1 into the filtering cavity 12 and the impeller cavity 11 which communicate with each other. The filtering cavity 12 is used to deliver the washing water in the inner cavity of the drum of the laundry treatment device into the impeller cavity 11.

[0055] Specifically, the filter cavity 12 is provided with a filter port 121 on the cavity wall thereof, which is in communication with the inner cavity of the drum of the clothes treatment device; the impeller cavity 11 is provided with a circulation port 112 on the cavity wall thereof, which is in communication with the inner cavity of the drum of the clothes treatment device, and a drainage port 111, which is in communication with the outside, and the circulation port 112 is spaced apart from the drainage port 111, so that water circulation can be achieved by discharging the washing water entering the impeller cavity 11 from the circulation port 112 into the inner cavity of the drum, or drainage can be achieved by discharging the washing water from the drainage port 111 to the outside of the clothes treatment device.

[0056] In specific implementation, one end of the impeller 2 in the impeller cavity 11 is used for transmission connection with the motor. The impeller 2 is connected with the rotating shaft of the motor, receives rotating force from the motor, and rotates in the impeller cavity 11, so that the washing water in the impeller cavity 11 forms a flow, so as to be discharged from the drainage port 111 or the circulation port 112.

[0057] Referring to Figures 1-6 As shown in the figure, the side of the partition 122 close to the impeller cavity 11 is provided with a buffer groove 115 extending in the direction from the circulation port 112 to the drainage port 111, for example, the buffer groove 115 can be an arc-shaped groove extending in the circumferential direction of the pump shell 1, and the buffer groove 115 is located between the circulation port 112 and the drainage port 111, so that the water flow in the impeller cavity 11 forms a turbulent state when passing through the buffer groove 115. That is, the buffer groove 115 is arranged in the impeller cavity 11 and can contact the washing water in the impeller cavity 11 to disturb the washing water, so that the washing water is disturbed to form a turbulent flow and a vortex state, and the washing water after forming the vortex state cannot continue to flow forward.

[0058] For example, when the drainage operation is performed, part of the washing water does not flow out of the drainage port 111 and continues to flow to the buffer groove 115 after flowing to the drainage port 111 in a clockwise direction under the stirring of the impeller 2, and forms a vortex under the disturbance of the buffer groove 115, and then cannot continue to flow to the circulation port 112 in a clockwise direction, so that the circulation port 112 can be prevented from being waterlogged.

[0059] Similarly, when the water circulation operation is performed, part of the washing water does not flow out of the circulation port 112 and continues to flow to the buffer groove 115 after flowing to the circulation port 112 in a counterclockwise direction under the stirring of the impeller 2, and forms a vortex under the disturbance of the buffer groove 115, and then cannot continue to flow to the drainage port 111 in a counterclockwise direction, so that the drainage port 111 can be prevented from being waterlogged.

[0060] Specifically, the working process of the water pump is as follows: when the draining operation is performed, the motor is started and drives the impeller 2 to rotate clockwise, and the washing water in the impeller cavity 11 is stirred to flow clockwise when the impeller 2 rotates, part of the washing water flows to the drain port 111 and flows out to the outside of the laundry treatment device through the drain port 111, and part of the washing water flows through the drain port 111, impacts on the buffer groove 115 to form a vortex, and then flows back to the drain port 111 to flow out through the drain port 111, thereby realizing the draining operation and avoiding water from flowing through the circulation port 112. When the circulating water operation is performed, the motor is started and drives the impeller 2 to rotate counterclockwise, and the washing water in the impeller cavity 11 is stirred to flow counterclockwise when the impeller 2 rotates, part of the washing water flows to the circulation port 112 and flows out, and then flows back to the inner cavity of the drum to realize recycling, and part of the washing water flows through the circulation port 112, impacts on the buffer groove 115 to form a vortex, and then flows back to the circulation port 112 to flow to the inner cavity of the drum through the circulation port 112, thereby realizing the circulating water operation and avoiding water from flowing through the drain port 111.

[0061] Specifically, the drain port 111 and the circulation port 112 of the water pump are formed on the outer peripheral surface of the pump housing 1, the drain port 111 communicates with the inside of the impeller cavity 11, and the drain port 111 can be provided to protrude outward from the outer peripheral surface of the pump housing 1. When the laundry treatment device performs the draining process, the drain port 111 is used as a passage, and the washing water in the impeller cavity 11 flows along the passage to the outside through the clockwise rotation of the impeller 2.

[0062] The circulation port 112 communicates with the inside of the impeller cavity 11 and protrudes outward from the outer peripheral surface of the pump housing 1. When the laundry treatment device performs the circulating water operation, the circulation port 112 is used as a passage, and the washing water in the impeller cavity 11 flows along the passage to the inner cavity of the drum through the counterclockwise rotation of the impeller 2.

[0063] The drain port 111 and the circulation port 112 are formed at different positions on the outer wall of the pump housing 1. In one embodiment, the drain port 111 and the circulation port 112 can be provided as one, and in other embodiments, the drain port 111 can be provided as multiple, and the circulation port 112 can also be provided as multiple, the inner diameters of the multiple drain ports 111 can be consistent or different, and the inner diameters of the multiple circulation ports 112 can also be consistent or different, which are specifically set according to the amount of washing water to be drained or circulated.

[0064] Further, in the embodiment, the diameter of the drain port 111 and the diameter of the circulation port 112 can be set to be consistent, so that the drain efficiency and the circulation water efficiency can be substantially the same; or, the diameter of the drain port 111 can be set to be greater than the diameter of the circulation port 112, so that the drain efficiency is greater than the circulation water efficiency; or, the diameter of the drain port 111 can be set to be less than the diameter of the circulation port 112, so that the circulation water efficiency is greater than the drain efficiency.

[0065] In addition, referring to Figure 1 In the embodiment, the diameter of the filter port 121 is greater than the diameter of the drain port 111 and the diameter of the circulation port 112, the water in the drum inner cavity enters the filter cavity 12 through the filter port 121, and then enters the impeller cavity 11 which is in communication with the filter cavity 12, the water entering the impeller cavity 11 can be discharged through the drain port 111 to realize the drain operation or discharged from the circulation port 112 to realize the circulation water operation.

[0066] Specifically, the filter port 121 and the drum inner cavity can be communicated through a water inlet pipe, the drain port 111 and the outside can be communicated through a drain pipe, and the circulation port 112 and the drum inner cavity can be communicated through a circulation pipe. The water inlet pipe, the drain pipe and the circulation pipe can all be soft pipes, such as plastic corrugated pipes or rubber pipes.

[0067] Referring to Figure 2 The center of the partition 122 has a through hole 123 which communicates the filter cavity 12 and the impeller cavity 11, and the buffer groove 115 is close to the through hole 123. Specifically, the distance between the buffer groove 115 and the through hole 123 can be set according to actual needs, which is not limited in the embodiment.

[0068] In addition, one end of the buffer groove 115 close to the drain port 111 can extend to the end of the drain port 111 close to the circulation port 112, or can have a certain distance from the drain port 111; and / or, one end of the buffer groove 115 close to the circulation port 112 can extend to the end of the circulation port 112 close to the drain port 111, or can have a certain distance from the circulation port 112.

[0069] That is, along Figure 2As shown in the drawing orientation, with the drain outlet 111 positioned to the left of the circulation outlet 112, the left end of the buffer groove 115 can be configured to extend to the drain outlet 111, and the right end to the circulation outlet 112; alternatively, the left end of the buffer groove 115 may not extend to the drain outlet 111, and the right end may not extend to the circulation outlet 112; alternatively, the left end of the buffer groove 115 may extend to the drain outlet 111, and the right end may not extend to the circulation outlet 112; alternatively, the left end of the buffer groove 115 may not extend to the drain outlet 111, and the right end to the circulation outlet 112. The specific length of the buffer groove 115 extending circumferentially along the impeller cavity 11 can be set according to actual needs, and this embodiment does not impose specific limitations on this.

[0070] In this embodiment, the extended shape of the buffer groove 115 can be arc-shaped. By setting the buffer groove 115 to be an arc-shaped groove, the arc-shaped buffer groove 115 is close to the flow direction of the washing water in the impeller cavity 11, which facilitates the washing water to flow into the buffer groove 115 and form a turbulent state, thereby preventing the washing water from continuing to flow and causing cross-contamination. Of course, in other implementations, the buffer groove 115 can also be set as a horizontal groove or a wavy groove along the drain port 111 to the circulation port 112.

[0071] Furthermore, the cross-sectional shape of the buffer groove 115 can be U-shaped, or in other implementations, the cross-sectional shape of the buffer groove 115 can be semi-circular, elliptical, or square.

[0072] In specific implementation, the buffer groove 115 is along the radial direction of the impeller cavity 11 (refer to...). Figure 2 The width of the buffer groove 115 (in the r direction shown) ranges from 1mm to 2mm, and the buffer groove 115 is along the axial direction of the impeller cavity 11 (refer to...). Figure 6 The depth dimension of the buffer groove 115 (in the x direction shown) is not greater than 3mm. By reasonably setting the dimension of the buffer groove 115 in the radial direction of the impeller cavity 11, the appropriate amount of washing water can be turbulent and generate eddies when it flows through the buffer groove 115. This can reduce the flow rate of the washing water to a certain extent and prevent cross-flow between the circulation port 112 and the drain port 111.

[0073] For example, the buffer groove 115 is along the radial direction of the impeller cavity 11 (refer to...). Figure 2 The width of the buffer groove 115 (in the r direction shown) can be 1 mm, 1.5 mm, or 2 mm. The buffer groove 115 is along the axial direction of the impeller cavity 11 (refer to...). Figure 6The depth dimension of the buffer groove 115 along the axial direction of the impeller cavity 11 can be 1mm, or 1.5mm, or 2mm, or 2.5mm. Specifically, the size of the buffer groove 115 along the radial direction of the impeller cavity 11 and the depth dimension along the axial direction of the impeller cavity 11 are related to the water volume of the washing water in the impeller cavity 11 and the discharge amount of the washing water, which are not limited in the embodiment.

[0074] Referring to Figure 2 In the embodiment, the center of the buffer groove 115 can be coaxially arranged with the center of the pump shell 1, so that not only the buffer groove 115 is easy to manufacture, but also the washing water flowing in the impeller cavity 11 along the rotation direction of the impeller 2 can be turbulent in the buffer groove 115, avoiding the washing water from continuing to flow and causing water stringing.

[0075] That is, when the center of the circle where the arc-shaped groove is located is coaxially arranged with the center of the impeller cavity 11, and the center of the impeller 2 in the impeller cavity 11 is also coaxially arranged with the center of the impeller cavity 11, the flow direction of the washing water in the impeller cavity 11 agitated by the impeller 2 is closer to the extension track of the buffer groove 115 along the circumference of the impeller cavity 11, so that the washing water can be better disturbed to avoid water stringing between the drain port 111 and the circulation port 112.

[0076] In specific implementation, the buffer groove 115 can be arranged in one or multiple. By arranging multiple buffer grooves 115 arranged in sequence along the radial direction of the impeller cavity 11, the washing water can be collectively buffered and disturbed by the multiple buffer grooves 115, so as to further ensure that the circulation port 112 and the drain port 111 will not cause water stringing.

[0077] Further, when multiple buffer grooves 115 are arranged, the multiple buffer grooves 115 are arranged in sequence along the radial direction of the impeller cavity 11 (refer to Figure 2 The r direction shown). Specifically, the extension length of the multiple buffer grooves 115 arranged in sequence along the radial direction of the impeller cavity 11 along the circumference of the impeller cavity 11 can be consistent or inconsistent.

[0078] Optionally, a water blocking boss 113 can be arranged on the cavity wall of the impeller cavity 11, and the buffer groove 115 is arranged on the water blocking boss 113, so that not only the washing water can be disturbed to form a vortex by the buffer groove 115 to block the washing water from continuing to flow and causing water stringing, but also the washing water can be blocked by the water blocking boss 113 to prevent water stringing.

[0079] That is, when the draining operation is performed, the washing water is blocked on the side surface of the water-blocking boss 113 close to the draining port 111 after flowing through the draining port 111, so as to avoid the washing water from flowing into the circulating port 112 to cause the water leakage; or, when the circulating water operation is performed, the washing water is blocked on the side surface of the water-blocking boss 113 close to the circulating port 112 after flowing through the circulating port 112, so as to avoid the washing water from flowing into the draining port 111 to cause the water leakage.

[0080] Specifically, the working process of the water pump provided with the water-blocking boss 113 is as follows: when the draining operation is performed, the motor is started and drives the impeller 2 to rotate clockwise, the washing water in the impeller cavity 11 is stirred and flows clockwise when the impeller 2 rotates, part of the washing water flows to the draining port 111 and flows out to the outside of the clothes treatment device through the draining port 111, and part of the washing water flows through the draining port 111, impacts on the water-blocking boss 113 to form a vortex, and then flows out through the draining port 111, so as to realize the draining operation and avoid the water leakage at the circulating port 112. When the circulating water operation is performed, the motor is started and drives the impeller 2 to rotate counterclockwise, the washing water in the impeller cavity 11 is stirred and flows counterclockwise when the impeller 2 rotates, part of the washing water flows to the circulating port 112 and flows out to the drum inner cavity through the circulating port 112 to realize the recycling, and part of the washing water flows through the circulating port 112, impacts on the water-blocking boss 113 to form a vortex, and then flows to the drum inner cavity through the circulating port 112, so as to realize the circulating water operation and avoid the water leakage at the draining port 111.

[0081] In summary, the water pump of the embodiment can further ensure that the circulating port 112 and the draining port 111 will not cause the water leakage through the double effects of the water-blocking boss 113 and the buffer groove 115.

[0082] Specifically, the water-blocking boss 113 can be a solid boss, so as to be easy to process and manufacture; or, the water-blocking boss 113 can also be a hollow structure, so as to effectively reduce the weight of the water pump with the water-blocking boss 113 and realize the lightweight design.

[0083] Specifically, the water-blocking boss 113 includes a first water-blocking part 116 and a second water-blocking part 117 which are sequentially arranged along the center of the impeller cavity 11 to the cavity wall of the impeller cavity 11, and the buffer groove 115 is arranged on the first water-blocking part 116; the height dimension of the first water-blocking part 116 along the axial direction of the impeller cavity 11 is smaller than the height dimension of the second water-blocking part 117 along the axial direction of the impeller cavity 11.

[0084] That is, the height dimension of the first water-blocking part 116 along the axial direction of the impeller cavity 11 (referring to the arrow A in FIG. 1) is smaller than the height dimension of the second water-blocking part 117 along the axial direction of the impeller cavity 11 (referring to the arrow A in FIG. 1). Figure 6As shown in the x direction), the height dimension of the first water stop 116 is smaller than the height dimension of the second water stop 117, the left end faces of the first water stop 116 and the second water stop 117 can be arranged flush, and the right end of the second water stop 117 protrudes from the right end of the first water stop 116, so that the first water stop 116 and the second water stop 117 can be suitable for blocking the washing water of different water levels in the impeller cavity 11, thereby preventing the circulation port 112 and the drain port 111 from being watered.

[0085] That is, when the water level delivered into the impeller cavity 11 is high, the water can be blocked by the first water stop 116 and the second water stop 117 together, preventing the drain port 111 and the circulation port 112 from being watered; when the water level delivered into the impeller cavity 11 is low, the water is mainly blocked by the first water stop 116 and the buffer groove 115 on the first water stop 116, preventing the drain port 111 and the circulation port 112 from being watered.

[0086] Specifically, referring to Figure 4 the drawing direction, the water blocking surface 114 can be arranged only on the right side surface of the second water stop 117, that is, along the direction from the outer edge to the center of the impeller cavity 11 (refer to the r direction shown in Figure 4 , the water blocking surface 114 can be inclined towards the circulation port 112 or curved towards the circulation port 112, so as to block and guide the washing water. For example, when the circulating water operation is performed, the washing water flowing through the circulation port 112 is blocked on the water blocking surface 114 formed on the side surface of the second water stop 117 close to the circulation port 112, so as to avoid the washing water continuing to flow into the drain port 111, causing water to be watered.

[0087] Alternatively, the water blocking surface 114 can be arranged only on the left side surface of the second water stop 117, that is, along the direction from the outer edge to the center of the impeller cavity 11 (refer to the r direction shown in Figure 4 , the water blocking surface 114 can be inclined towards the drain port 111 or curved towards the drain port 111, so as to block and guide the washing water. For example, when the drain operation is performed, the washing water flowing through the drain port 111 is blocked on the water blocking surface 114 formed on the side surface of the second water stop 117 close to the drain port 111, so as to avoid the washing water continuing to flow into the circulation port 112, causing water to be watered.

[0088] Alternatively, the water-blocking surface 114 can be arranged on the left side surface and the right side surface of the second water-blocking portion 117. When the circulating water operation is performed, the washing water is blocked on the water-blocking surface 114 formed on the side surface of the second water-blocking portion 117 close to the circulating port 112 after flowing through the circulating port 112, so as to avoid the washing water continuing to flow into the drain port 111, thereby causing water leakage. When the draining operation is performed, the washing water is blocked on the water-blocking surface 114 formed on the side surface of the second water-blocking portion 117 close to the drain port 111 after flowing through the drain port 111, so as to avoid the washing water continuing to flow into the circulating port 112, thereby causing water leakage.

[0089] In the embodiment, the water-blocking surface 114 can be an arc surface. Specifically, when the water-blocking surface 114 is formed on the side surface of the second water-blocking portion 117 close to the drain port 111, the water-blocking surface 114 close to the drain port 111 is an arc surface protruding towards the drain port 111. By arranging the water-blocking surface 114 close to the drain port 111 as an arc surface protruding towards the drain port 111, the water-blocking surface 114 close to the drain port 111 can form an effective water guide, so as to guide the washing water towards the drain port 111 while blocking the washing water by the water-blocking surface 114, so that the washing water is drained from the drain port 111, thereby avoiding water leakage at the circulating port 112.

[0090] Alternatively, when the water-blocking surface 114 is formed on the side surface of the second water-blocking portion 117 close to the circulating port 112, the water-blocking surface 114 close to the circulating port 112 is an arc surface protruding towards the circulating port 112. By arranging the water-blocking surface 114 close to the circulating port 112 as an arc surface protruding towards the circulating port 112, the water-blocking surface 114 close to the circulating port 112 can form an effective water guide, so as to guide the washing water towards the circulating port 112 while blocking the washing water by the water-blocking surface 114, so that the washing water is drained from the circulating port 112, thereby avoiding water leakage at the drain port 111.

[0091] Alternatively, the water-blocking surface 114 on the side near the drain outlet 111 can be an arc-shaped surface convex towards the drain outlet 111, and the water-blocking surface 114 on the side near the circulation port 112 can also be an arc-shaped surface convex towards the circulation port 112. When drainage is required, the water-blocking surface 114 on the side near the drain outlet 111 can form a water-blocking surface 114 that effectively guides the water flow. This allows the washing water to be blocked while simultaneously being guided towards the drain outlet 111, so that the washing water can be discharged from the drain outlet 111, thus preventing cross-contamination at the circulation port 112. When circulating water is required, the water-blocking surface 114 on the side near the circulation port 112 can form a water-blocking surface 114 that effectively guides the water flow. This allows the washing water to be blocked while simultaneously being guided towards the circulation port 112, so that the washing water can be discharged from the circulation port 112, thus preventing cross-contamination at the drain outlet 111.

[0092] In specific implementation, the first water-isolating part 116 is parallel to the impeller 2 inside the impeller cavity 11, and the gap between the first water-isolating part 116 and the impeller 2 is 3mm-5mm. By reasonably setting the gap between the first water-isolating part 116 and the impeller 2, it is possible to avoid both an excessively large gap that would result in a small difference between the pump's flow rate and head, and an excessively small gap that would lead to the accumulation of debris and interference with the rotation of the impeller 2. It should be noted that the gap between the first water-isolating part 116 and the impeller 2 refers to the gap along the... Figure 6 The distance n in the x-direction shown is the distance between the right side of the first water-blocking part 116 and the left side of the impeller 2.

[0093] For example, the gap between the first water-blocking part 116 and the impeller 2 in the impeller cavity 11 can be 3mm, 4mm, or 5mm. Similarly, the gap between the second water-blocking part 117 and the impeller 2 in the impeller cavity 11 can be 3mm, 4mm, or 5mm.

[0094] In addition, the surface of the first water-blocking part 116 near the impeller 2 in the impeller cavity 11 can be adapted to the shape of the impeller 2. Without affecting the rotation of the impeller 2, the arrangement of the impeller 2 and the first water-blocking part 116 in the impeller cavity 11 can be more aesthetically pleasing and reasonable.

[0095] In some embodiments, refer to Figure 2 As shown, a guide notch 118 can be provided near the circulation port 112 on the water-proof protrusion 113, thereby guiding the water flow towards the circulation port 112. Along the direction from the inlet to the bottom of the guide notch 118 (refer to...) Figure 2 The direction t shown, the width of the guide notch 118 (refer to) Figure 2The size d) in the water barrier boss 113 gradually decreases, and the purpose of the arrangement is to shield part of the circulating port 112 due to the position of the water barrier boss 113 close to the circulating port 112, which may have an impact on the water discharge capacity at the circulating port 112. Therefore, the gradually decreasing width of the flow guide gap 118 can play a role in guiding the washing water, thereby quickly guiding the washing water to the circulating port 112, thereby overcoming the problem of insufficient water discharge capacity caused by the water barrier boss 113 shielding part of the circulating port 112.

[0096] In particular, the water barrier boss 113 and the pump shell 1 can be integrally injection molded by plastic, so as to save the process and enhance the overall strength of the pump shell 1.

[0097] In addition, referring to Figure 1 As shown, the outer wall of the pump shell 1 can also be provided with a limiting hook 3, so as to fix the wire connected with the motor of the water pump, so that the wire is distributed along the path limited by the limiting hook 3, so that the wire is more regular.

[0098] Further, the limiting hook 3 can be arranged on the pump shell 1 and away from the drain port 111 and the circulating port 112, so as to avoid interference between the wire and the drain pipe connected with the drain port 111 or the circulating pipe connected with the circulating port 112. In particular, the limiting hook 3 can be provided as two or more, and the wire path extending along the preset path is limited between the plurality of limiting hooks 3.

[0099] In particular, the limiting hook 3 can be integrally formed on the pump shell 1, thereby simplifying the manufacturing process; or the limiting hook 3 can also be fixed on the outer wall of the pump shell 1 by clamping or bonding.

[0100] Embodiment two

[0101] Referring to Figures 1-6 As shown, the present embodiment also provides a clothes treatment device, which comprises a shell, a drum arranged in the shell, and a water pump arranged between the shell and the drum.

[0102] The shell forms the appearance of the clothes treatment device. The shell has an inlet (not shown in the figure) for washing water. The shell has a clothes feeding port or a clothes taking-out port corresponding to the drum. The clothes feeding port or the clothes taking-out port can be arranged on one side of the shell or on the top of the shell.

[0103] For example, the clothes treatment device of the present embodiment can be a washing machine, and the water pump can be a circulating and draining integrated water pump, so as to realize the circulating water operation and the draining operation.

[0104] In a specific implementation, the water pump of the laundry treating apparatus includes a pump housing 1. The pump housing 1 can specifically include an impeller cavity 11 for placing an impeller 2 and a filtering cavity 12 for water inlet. The filtering cavity 12 is provided with a filtering port 121 on a cavity wall thereof, which is communicated with an inner cavity of a drum of the laundry treating apparatus. The impeller cavity 11 is provided with a circulating port 112 on a cavity wall thereof, which is communicated with the inner cavity of the drum of the laundry treating apparatus, and a drainage port 111, which is communicated with the outside. The circulating port 112 and the drainage port 111 are arranged in a spaced manner, so that water circulation can be achieved by discharging the washing water entering the impeller cavity 11 from the circulating port 112 or drainage can be achieved by discharging the washing water from the drainage port 111.

[0105] Referring to Figures 1-6 As shown, one side of the partition 122 close to the impeller cavity 11 is provided with a buffer groove 115 extending along the circumference of the pump housing 1, and the buffer groove 115 is located between the circulating port 112 and the drainage port 111, so that the water in the impeller cavity 11 forms a turbulent flow state when flowing through the buffer groove 115. That is, the buffer groove 115 is arranged in the impeller cavity 11 and can be in contact with the washing water in the impeller cavity 11 to disturb the washing water, so that the washing water is disturbed to form a turbulent flow and a vortex state, and the washing water after forming the vortex state cannot continue to flow forward.

[0106] For example, when the drainage operation is performed, after the washing water flows to the drainage port 111 in a clockwise direction under the agitation of the impeller 2, part of the washing water does not flow out of the drainage port 111 and continues to flow to the buffer groove 115, forms a vortex under the disturbance of the buffer groove 115, and cannot continue to flow to the circulating port 112 in a clockwise direction, so that the circulating port 112 can be prevented from being waterlogged.

[0107] Similarly, when the water circulation operation is performed, after the washing water flows to the circulating port 112 in a counterclockwise direction under the agitation of the impeller 2, part of the washing water does not flow out of the circulating port 112 and continues to flow to the buffer groove 115, forms a vortex under the disturbance of the buffer groove 115, and cannot continue to flow to the drainage port 111 in a counterclockwise direction, so that the drainage port 111 can be prevented from being waterlogged.

[0108] Further, the cavity wall of the impeller cavity 11 is provided with a water blocking boss 113, which is located between the circulating port 112 and the drainage port 111, so that the waterlogged phenomenon between the circulating port 112 and the drainage port 111 can be avoided. That is, when the drainage operation is performed, the washing water is blocked by the water blocking boss 113 after flowing through the drainage port 111, so that the washing water cannot continue to flow to the circulating port 112, thereby avoiding waterlogging; when the water circulation operation is performed, the washing water is blocked by the water blocking boss 113 after flowing through the circulating port 112, so that the washing water cannot continue to flow to the drainage port 111, thereby avoiding waterlogging.

[0109] In summary, the laundry treatment device of the embodiment can change the rotation direction of the motor, so that the rotation direction of the impeller 2 can be changed. Therefore, the water pump of the laundry treatment device can perform the function of a drainage pump and the function of a circulation pump, i.e., the water pump can perform both the drainage operation and the water circulation operation, so that the structure of the laundry treatment device is greatly simplified, the volume of the laundry treatment device is reduced, the space is saved, and the cost of the laundry treatment device is reduced.

[0110] In addition, the water pump of the embodiment can set a high rotation speed of the motor when performing the drainage operation and set a low rotation speed of the motor when performing the water circulation operation, so as to prevent unnecessary noise and energy loss.

[0111] In a specific implementation, the water pump is located in the shell and between the shell and the drum. More specifically, the water pump is located at the bottom of the drum. Once the washing water in the inner cavity of the drum flows into the impeller cavity 11 of the water pump, the water pump can perform the water circulation process or the drainage process.

[0112] The connection mode of the water pump and the shell is that the pump shell 1 is provided with a first connecting part, the shell is provided with a second connecting part, and the water pump is fixed to the inner wall of the shell through the cooperation of the first connecting part and the second connecting part. For example, the first connecting part can be a clamping protrusion, the second connecting part can be a clamping groove, and the water pump can be fixed to the inner wall of the shell through the clamping cooperation of the clamping protrusion and the clamping groove. Alternatively, the first connecting part and the second connecting part are both threaded holes, and a fastener is arranged in the threaded holes to fix the water pump to the inner wall of the shell.

[0113] In addition, the shell of the laundry treatment device can be made of plastic material or light alloy material. In addition, the shell of the laundry treatment device can be square or circular.

[0114] The other technical features of the laundry treatment device of the embodiment can be referred to the description of the first embodiment, which will not be repeated here.

[0115] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve the purpose of differentiating between two entities or operations, without necessarily requiring or implying any sort of actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other transitional terminology should be construed as non- exclusive comprising so that a process or method, a product or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or even further elements inherent to such process, method, product or apparatus. An element proceeded by "comprises a... " does not, without further constraints, exclude the presence of additional identical elements in the process, method, product or apparatus including said element.

[0116] The foregoing is merely illustrative of the various embodiments of this application, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water pump characterized by comprising: The pump housing has a cavity, which is divided into a filter cavity and an impeller cavity by a partition, the filter cavity being used to deliver washing water in the drum inner cavity of the laundry treatment device into the impeller cavity; the cavity wall of the impeller cavity has a circulation port for communicating with the drum inner cavity of the laundry treatment device and a drainage port for communicating with the outside, the circulation port being spaced apart from the drainage port; One side of the partition close to the impeller cavity has a buffer groove, which is located between the circulation port and the drainage port and extends along the direction from the circulation port to the drainage port; The buffer groove is an arc-shaped groove extending along the circumference of the impeller cavity; The cavity wall of the impeller cavity is provided with a water-blocking boss, which is located between the drainage port and the circulation port, and the buffer groove is arranged on the water-blocking boss.

2. The water pump of claim 1, wherein The center of the circle where the arc-shaped groove is located is coaxially arranged with the center of the impeller cavity.

3. The water pump of claim 1, wherein The buffer groove includes at least two buffer grooves, which are sequentially arranged along the radial direction of the impeller cavity.

4. The water pump according to any one of claims 1 to 3, characterized in that The width of the buffer groove along the radial direction of the impeller cavity ranges from 1 mm to 2 mm.

5. The water pump according to any one of claims 1 to 3, characterized in that The depth of the buffer groove along the axial direction of the impeller cavity is not greater than 3 mm.

6. The water pump of claim 1, wherein In the direction from the center of the impeller cavity to the cavity wall of the impeller cavity, the water-blocking boss includes a first water-blocking part and a second water-blocking part arranged sequentially, and the buffer groove is arranged on the first water-blocking part; The height of the first water-blocking part along the axial direction of the impeller cavity is less than the height of the second water-blocking part along the axial direction of the impeller cavity.

7. The water pump of claim 6, wherein The first water-blocking part is arranged in parallel with the impeller in the impeller cavity.

8. The water pump of claim 7, wherein The gap between the first water-blocking part and the impeller ranges from 3 mm to 5 mm.

9. The water pump of claim 6, wherein At least one side surface close to the drainage port and / or at least one side surface close to the circulation port of the second water-blocking part is formed as a water-blocking surface.

10. The water pump of claim 9, wherein The water-blocking surface close to the drainage port is an arc surface protruding towards the drainage port; and / or, the water-blocking surface close to the circulation port is an arc surface protruding towards the circulation port.

11. The water pump of claim 1, wherein The water-blocking boss is provided with a flow guide notch close to the circulation port; In the direction from the water inlet of the flow guide notch to the bottom of the flow guide notch, the width of the flow guide notch gradually decreases. 12.A laundry treating apparatus, characterized by, The water pump is arranged between the outer shell and the drum.

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