Water pump for swimming pool

Abstract

The present disclosure relates to a water pump for a swimming pool, which achieves water cooling by constructing water circulating flow channels inside the water pump for the swimming pool. Due to the arrangement of a low pressure chamber and a high pressure chamber which are formed between a water intake container and a pump chamber, in combination with the water circulating flow channels formed by through holes of a partition plate, an annular partition, a motor casing, an inner wall of a motor chamber, and a first return pipe, a part of swimming pool water entering the water pump is enabled to flow from the water intake container into a pump body under different water pressure differences and the action of an impeller so as to directly flush and cool an outer wall of a motor; and the water can flow back to the water intake container.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of water pumps, and more particularly, to a water pump for a swimming pool.BACKGROUND

[0002] Circulating water pumps for swimming pools in the related art are usually air-cooled or cooled in a manner of a combination of air cooling and water cooling. The water cooling method of the existing swimming pool pump is usually implemented by enabling circulating water to leave an impeller and then allowing a small part of the circulating water to impact a front end cover of an aluminum motor through an interstice between the impeller and a volute for cooling, which results in a smaller heat exchange area; and furthermore, the swimming pool water used for cooling in the pump cannot flow out in time and thus cannot be supplemented with new circulating water, so that the heat cannot be dissipated in time in the case of high power operation. Therefore, how to improve the heat dissipation performance of the water pumps for the swimming pools and ensuring the heat dissipation during high-power operation are urgent problems to be discussed and solved.

[0003] Document CN 113 007 103 A concerns a pump system, particularly for water circulation in a swimming pool. It aims to reduce noise and improve efficiency, using flow-guiding structures inside the pump housing to optimize hydraulic performance. The flow-guiding structures consist of guide vanes, flow-deflecting ribs formed inside the volute housing. These vanes help direct the water smoothly from the impeller outlet toward the pump outlet, reducing turbulence.SUMMARY

[0004] The technical problem to be solved by the present disclosure is to provide a water pump for a swimming pool in view of the above shortcomings, which aims to improve the heat dissipation performance and ensure the normal heat dissipation of the water pump for the swimming pool in the case of high power operation.

[0005] In order to solve the above technical problems, the present disclosure adopts the following technical solutions: a water pump for a swimming pool includes: a water intake container, a water inlet being provided at one side of the water intake container; a pump body, provided with a water outlet, a pump chamber, a motor chamber, a partition plate, an annular partition, a motor end cover and a first return pipe, where the water outlet is in fluid communication with the pump chamber, the partition plate is configured to separate the pump chamber from the motor chamber, the motor end cover is disposed at an end of the pump body away from the water intake container, the annular partition is disposed inside the motor chamber, one end of the annular partition is connected to the partition plate, the other end of the annular partition is spaced apart from the motor end cover by a preset distance gap, the first return pipe is disposed inside the pump chamber, a water inlet end of the first return pipe is provided on the partition plate and is in fluid communication with the motor chamber, the water inlet end of the first return pipe is located between the annular partition and an inner wall of the motor chamber, and a water outlet end of the first return pipe is in fluid communication with the water intake container; and a motor, including a main body and an impeller, the impeller being disposed inside the pump chamber, the main body being disposed inside the motor chamber and located at an inner side of the annular partition, an output end of the main body being connected to the impeller after passing through the partition plate, and the partition plate having two or more through holes at positions between the annular partition and the main body, wherein the through holes are configured to allow water to flow from the pump chamber to a position between the annular partition and an outer wall of the main body, pass through a position between the annular partition and the inner wall of the motor chamber, and then flow into the water intake container through the first return pipe.

[0006] According to the water pump for the swimming pool provided by the present disclosure, after swimming pool water enters the pump body through the water intake container, a high pressure chamber is formed between the impeller and the partition plate under the action of the rotation of the impeller, and the swimming pool water flows to the motor chamber through the through holes of the partition plate under the action of high pressure; two layers of water circulating flow channels are respectively formed by the outer wall of the main body of the motor and the annular partition and by the annular partition and the inner wall of the motor chamber; the swimming pool water flows into the flow channel formed by the outer wall of the main body of the motor and the annular partition through the through holes, flushing the outer wall of the main body of the motor to achieve cooling; and then the heated swimming pool water flows into the flow channel formed by the annular partition and the inner wall of the motor chamber, and flows into the relatively low-pressure water intake container through the first return pipe, so as to achieve cooling water circulation. Water cooling is achieved by constructing the water circulating flow channels inside the water pump for the swimming pool. Due to the arrangement of a low pressure chamber and the high pressure chamber which are formed between the water intake container and the pump chamber, in combination with the water circulating flow channels formed by the through holes of the partition plate, the annular partition, a motor casing, the inner wall of the motor chamber, and the first return pipe, a part of swimming pool water entering the water pump is enabled to flow from the water intake container into the pump body under different water pressure differences and the action of the impeller so as to directly flush and cool the outer wall of the motor; and the water can flow back to the water intake container in a timely manner through a first water return pipe, ensuring that heated water can flow out of the pump body in time, and cold water can circulate in time to cool the motor; and therefore, the heat dissipation performance is improved, and the normal heat dissipation of the water pump for the swimming pool is guaranteed in the case of high power operation.

[0007] Further, the motor chamber is formed by assembling the motor end cover, the partition plate and side walls of the pump body; and one end of the motor is abutted against the motor end cover.

[0008] Further, the through holes are located on the output side of the impeller, and a water outlet of the first return pipe is located on the input side of the impeller.

[0009] Further, the distance between each of the through holes and the output side of the impeller is less than the distance between the through hole and the water outlet of the pump body.

[0010] Further, the distance between the first return pipe and a top end of the pump body is less than the distance between the first return pipe and a bottom end of the pump body.

[0011] Further, the first return pipe is not in fluid communication with the water outlet.

[0012] Further, the water intake container includes a second return pipe, a water outlet end of the second return pipe is in fluid communication with an interior of the water intake container, and the water inlet end of the second return pipe is connected to the water outlet end of the first return pipe.

[0013] Further, the inner diameter of the water inlet end of the second return pipe is greater than the outer diameter of the water outlet end of the first return pipe, and the water outlet end of the first return pipe is nested inside the water inlet end of the second return pipe.

[0014] Further, the inner diameters of the first return pipe and the second return pipe are 4-6mm.

[0015] Further, there are 3 to 6 through holes, and the through holes are distributed around a center of the partition plate as the axis.

[0016] Further, the diameters of the through holes are 4-6mm.

[0017] Further, the pump body is further provided with a volute structure, the volute structure is disposed inside the pump chamber, the impeller is disposed inside the volute structure, a water discharge portion of the volute structure is aligned with the water outlet, and a water intake portion of the volute structure is in fluid communication with the water intake container.

[0018] Further, the first return pipe is located outside the volute structure.

[0019] Further, the water intake container further includes a filter basket, and the filter basket is disposed inside the water intake container.

[0020] Due to adoption of the above technical solutions, compared with the prior art, the present disclosure has the following advantages.

[0021] The improved structure of the water pump provided by the present application effectively solves the problems in the prior art that the motor is cooled by a fan with loud noise, and the motor is cooled by water flow with low efficiency and poor effect. A water channel structure composed of the plurality of through holes, the annular partition, the first return pipe and the second return pipe is used for introducing the swimming pool water in the water intake container into the motor chamber to take away the heat of the motor by swimming pool water, and the swimming pool water is returned to the water intake container after absorbing the heat, which realizes a circulation channel for cooling the motor with water, and also ensures the precise connectivity of a water cooling circulation channel for the motor.

[0022] The water channel structure design effectively improves the water utilization rate in a water cooling cycle process, avoids the energy loss in the water cooling cycle process, fully improves the efficiency of cooling the motor of the water pump by means of water flow, and has the effects of high noise reduction, high-efficiency motor water-cooling, environmental protection and energy conservation, and the like.

[0023] The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a schematic diagram of the structure of the cross section of a water pump for a swimming pool provided by an embodiment of the present application; and FIG. 2 is a schematic diagram of the structure of the cross section of a pump body of a water pump for a swimming pool provided by an embodiment of the present application.

[0025] In the drawings, the list of components denoted by reference numerals is as follows: 100 denotes a water intake container, 110 denotes a water inlet, 120 denotes a second return pipe, 130 denotes a filter basket, 200 denotes a pump body, 201 denotes a top end of the pump body, 202 denotes a bottom end of the pump body, 210 denotes a water outlet, 220 denotes a pump chamber, 230 denotes a motor chamber, 240 denotes a partition plate, 241 denotes through holes, 250 denotes an annular partition, 260 denotes a first return pipe, 270 denotes a motor end cover, 280 denotes a volute structure, 300 denotes a motor, 310 denotes a main body, and 320 denotes an impeller.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following is a description of the principles and features of the present disclosure in conjunction with the accompanying drawings. The examples provided are only intended to explain the present disclosure and are not intended to limit the scope of the present disclosure.

[0027] In the description of the present disclosure, it should be noted that the orientations or positional relationships indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise" and "counterclockwise" are based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have particular orientations, or must be constructed and operated in particular orientations. Therefore it cannot be construed as a limitation on the present disclosure.

[0028] Circulating water pumps for swimming pools in the related art are usually air-cooled or cooled in a manner of a combination of air cooling and water cooling. The cooling form of air-cooling will produce huge noise, and is limited in heat dissipation performance. The water cooling method of the current swimming pool pump is usually implemented by enabling circulating water to leave an impeller and then allowing a small part of the circulating water to impact a front end cover of an aluminum motor through an interstice between the impeller and the volute for cooling, which results in a smaller heat exchange area and makes less water available for cooling; and furthermore, the swimming pool water used for cooling in the pump cannot flow out in time and thus the pump cannot be supplemented with new circulating water, so that the heat cannot be dissipated in time in the case of high power operation. Therefore, how to improve the heat dissipation performance of the water pumps for the swimming pools and ensuring the heat dissipation during high-power operation are urgent problems to be discussed and solved.

[0029] In order to solve the above problems, the embodiments of the present application provide a water pump for a swimming pool, after swimming pool water enters a pump body 200 through a water intake container 100, a high pressure chamber is formed between an impeller 320 and a partition plate 240 under the action of the rotation of the impeller 320, and the swimming pool water flows to a motor 300 chamber 230 through through holes 241 of the partition plate 240 under the action of high pressure; two layers of water circulating flow channels are respectively formed by the outer wall of the main body 310 of the motor 300 and an annular partition 250 and by the annular partition 250 and the inner wall of the motor 300 chamber 230; the swimming pool water flows into the flow channel formed by the outer wall of the main body 310 of the motor 300 and the annular partition 250 through the through holes 241, flushing the outer wall of the main body 310 of the motor 300 to achieve cooling; and then the heated swimming pool water flows into the flow channel formed by the annular partition 250 and the inner wall of the motor 300 chamber 230, and flows into the relatively low-pressure water intake container 100 through a first return pipe 260, so as to achieve cooling water circulation. Water cooling is achieved by constructing the water circulating flow channels inside the water pump for the swimming pool. Due to the arrangement of a low pressure chamber and the high pressure chamber which are formed between the water intake container 100 and a pump chamber 220, in combination with the water circulating flow channels formed by the through holes 241 of the partition plate 240, the annular partition 250, the outer wall of the motor 300, the inner wall of the motor 300 chamber 230, and the first return pipe 260, a part of swimming pool water entering the water pump is enabled to flow from the water intake container 100 into the pump body 200 under different water pressure differences and the action of the impeller 320 so as to directly flush and cool the outer wall of the motor 300. Furthermore, the through holes 241 are reserved in the partition plate 240 between the pump chamber 220 and the motor chamber 230, so that the through holes 241 are separated from a water outlet 210, and external water is enabled to enter the motor chamber 230 from the water intake container through the through holes 241. Due to the provision of the plurality of through holes, on the one hand, the amount of water entering the motor chamber 230 is ensured to be sufficient so as to fully achieve the effect of cooling the main body of the motor, and on the other hand, it is ensured that the water entering the motor chamber 230 contacts different parts of the outer wall of the main body 310 of the motor from different positions in multiple directions, so that the water entering the motor chamber 230 is enabled to quickly contact and fully cover the outer wall of the main body 310 of the motor. Even further, since the annular partition 250 is disposed inside the motor chamber 230, the water entering through the through holes 241 needs to bypass the channel between the main body 310 of the motor and the annular partition 250 until reaching a position on a rear end cover of the motor chamber 230, then bypasses an interstice between the annular partition 250 and a motor rear end cover 270, flows to the channel between the annular partition 250 and the inner wall of the motor chamber 230, and then flows back into the water intake container 100 through the first return pipe 260, ensuring that the water flowing into the motor chamber 230 and in multiple-point contact with the surface of the main body 310 of the motor flows longitudinally from a front end of the motor chamber 230 to a rear end of the motor chamber 230. The structure of the partition plate 240 with the plurality of through holes 241,matching with the unique flow channel design, fully ensures that the water in the motor chamber 230 quickly contacts and fully covers the whole surface of the main body of the motor, and flows out of the motor chamber 230 in time, thus achieving a more efficient and reliable cooling effect on the main body of the motor.

[0030] The present application optimizes the water-cooling circulating flow channels, and does not allow a water cooling circulation channel of the main body 310 of the motor to be in fluid communication with the water outlet. On the one hand, the through holes 241 are reserved between the pump chamber 220 and the motor chamber 230, so that the through holes 241 are separated from the water outlet 210; on the other hand, the return pipe 260 is disposed separately, which allows the heated water entering the motor chamber 230 for cooling the main body of the motor to flow directly into the water intake container 100 bypassing the water outlet 210 so as to be isolated from the water outlet 210 and not to intersect with the water flow at the water outlet 210 of the water pump or an outer side of the pump body; and the water flows directly back from the motor chamber 230 to the water intake container 100 through the first return pipe without interference from the water outlet, thus avoiding the problem that the water flow circulation in the motor chamber 230 is interfered by the water outlet or the external water flow force, which makes it impossible to achieve the connectivity of a water cooling path.

[0031] Furthermore, the through holes 241 are located on the output side of the impeller 320, and the water outlet end of the first return pipe 260 is located on the input side of the impeller 320, that is, the through holes 241 and the water outlet end of the first return pipe 260 are located on both sides of the impeller 320, respectively; and the through holes 241 serve as an input end of the cooling water circulating channel in the motor chamber 230, and the water outlet end of the first return pipe 260 serves as an output end of the cooling water circulating channel in the motor chamber 230.

[0032] The water entering the through holes 241 from the water intake container 100 and the water entering the return pipes (including the first return pipe 260 and the second return pipe 120) from the motor chamber 230 are both propelled by the impeller 320, and the propulsion direction is the same as the directions of the cooling water circulating channels in the motor chamber 230, so that the above structure is conducive to ensuring that the cooling water circulating channels in the motor chamber 230 is connected end to end, and the cooling water can be conveyed smoothly due to the connectivity without external interference; and therefore, the cooling water is enabled to circulate between the motor chamber 230, the water intake container 100 and the pump chamber 220, and the main body 310 is cooled by the circulation of the cooling water.

[0033] According to the present application, the water flowing in the motor chamber 230 of the water pump can be timely returned to the water intake container 100 through the first return pipe 260, ensuring that heated water can flow out of the pump body 200 in time, and cold water can circulate in time to cool the motor 300; and therefore, the heat dissipation performance is improved, and the normal heat dissipation of the water pump for the swimming pool is guaranteed in the case of high power operation. Compared with air-cooled water pumps or water pumps requiring air-cooled assistance, the water pump for the swimming pool provided by the present application has extremely low noise, and directly contacts the outer wall of the main body 310 the motor 300 for cooling same, thus being timely and efficient in heat dissipation. In addition, through the internal cooling water circulation achieved by the high and low water pressure difference, the heated water obtained after heat exchange with the main body 310 of the motor 300 can flow out of the motor 300 chamber 230 in time, thus avoiding the phenomenon that since the water flow stays in the pump body 200 for a long time, the failure of the motor 300 is caused by untimely heat dissipation, and ensuring the normal and efficient operation of the water pump.

[0034] The embodiments of the present application will be further elaborated below in conjunction with FIG. 1 and FIG. 2.

[0035] FIG. 1 is a schematic diagram of the structure of the cross section of a water pump for a swimming pool provided by an embodiment of the present application. As shown in FIG. 1, the water pump for the swimming pool includes a water intake container 100, a pump body 200, and a motor 300, where a water inlet 110 is provided at one side of the water intake container 100; the pump body 200 is provided with a water outlet 210, a pump chamber 220, a motor 300, a motor chamber 230, a partition plate 240, an annular partition 250, a motor end cover 270 and at least one first return pipe 260, where the water outlet 210 is in fluid communication with the pump chamber 220, the partition plate 240 is configured to separate the pump chamber 220 from the motor chamber 230, the annular partition 250 is disposed inside the motor 300 chamber 230, one end of the annular partition 250 is connected to the partition plate 240, the motor end cover is disposed at an end of the pump body away from the water intake container, the other end of the annular partition is spaced apart from the motor end cover by a preset distance gap, the first return pipe 260 is disposed between the annular partition 250 and an inner wall of the motor chamber 230, the first return pipe 260 is disposed inside the pump chamber 220, the first return pipe 260 is disposed between the annular partition 250 and the inner wall of the motor chamber 230, a water inlet end of the first return pipe 260 is provided on the partition plate 240 and is in fluid communication with the motor chamber 230, and a water outlet end of the first return pipe 260 is in fluid communication with the water intake container 100; and the motor 300 includes a main body 310 and an impeller 320, where the impeller 320 being disposed inside the pump chamber 220, the main body 310 being disposed inside the motor chamber 230 and on the annular partition 250, an output end of the main body 310 being connected to the impeller 320 after passing through the partition plate 240, and the partition plate 240 having at least two through holes 241 at positions between the annular partition 250 and the main body 310, where the through holes 241 are configured to allow water to flow from the pump chamber 220 to a position between the annular partition 250 and an outer wall of the main body 310, pass through a position between the annular partition 250 and the inner wall of the motor 300 chamber 230, and then flow into the water intake container 100 through the first return pipe 260.

[0036] The output end of the main body 310 of the motor 300 is connected with the impeller 320 in the pump chamber 220 after passing through the partition plate 240, so as to control the rotation of the impeller 320. The other end of the main body 310 is abutted against the end cover 270 of the motor 300, so that a complete and seamless U-shaped flow channel is defined by the outer wall of the main body 310, the annular partition 250 and the inner wall of the motor 300 chamber 230. Water inflows through the through holes 241 of the partition plate 240, and outflows from the first return pipe 260 after passing through the U-shaped flow channel, so that the cooling water circulation flow rate is ensured to be stable, and the circulation and heat dissipation of the water flow are enabled to be more stable.

[0037] After the swimming pool water enters the pump body 200 through the water intake container 100, under the action of the rotation of the impeller 320, a high pressure chamber is formed between the impeller 320 and the partition plate 240 in the pump chamber 220. Correspondingly, a relatively low pressure chamber is formed in a water storage space in the water intake container 100. Under the propulsion of the impeller 320 and the action of a high pressure, some of the water in the swimming pool is discharged outside from the water outlet 210, and some of the water used for cooling flows from the through holes 241 of the partition plate 240 to the motor 300 chamber 230; two layers of water circulating flow channels are respectively formed by the outer wall of the main body 310 of the motor 300 and the annular partition 250 and by the annular partition 250 and the inner wall of the motor 300 chamber 230; the water flows into the first flow channel formed by the outer wall of the main body 310 of the motor 300 and the annular partition 250 through the through holes 241, flushing the outer wall of the main body 310 of the motor 300 to perform heat exchange and achieve cooling; the heated water flows from the first flow channel to the second flow channel formed by the annular partition 250 and the inner wall of the motor 300 chamber 230, and then flows into the relatively low pressure water intake container 100 through the first return pipe 260, as shown by the dotted line in FIG. 1; and the cooling water circulation inside the water pump is formed by the low pressure chamber of the water intake container 100, the high pressure chamber of the pump chamber 220, the through holes 241, the first flow channel, the second flow channel, and the first return pipe 260.

[0038] Water cooling is achieved by constructing the water circulating flow channels inside the water pump for the swimming pool. Due to the arrangement of the low pressure chamber and the high pressure chamber which are formed between the water intake container 100 and the pump chamber 220, in combination with the water circulating flow channels formed by the through holes 241 of the partition plate 240, the first flow channel, the second flow channel, and the first return pipe 260, a part of swimming pool water entering the water pump is enabled to flow from the water intake container 100 into the pump body 200 under different water pressure differences and the action of the impeller 320 so as to directly flush and cool the outer wall of the motor 300; and the water can flow back to the water intake container 100 in a timely manner through a first water return pipe, which ensures that heated water can flow out of the pump body 200 in time, cold water can circulate in time to cool the motor 300, and the swimming pool water between the impeller 320 and the partition plate 240 is enabled to have sufficient liquidity, thus preventing the problem of mechanical seal failure caused by excessive temperature rise due to local non-circulation of water; and therefore, the heat dissipation performance is improved, and the normal heat dissipation of the water pump for the swimming pool is guaranteed in the case of high power operation. Compared with air-cooled water pumps or water pumps requiring air-cooled assistance, the water pump for the swimming pool provided by the present application has extremely low noise, and directly contacts the outer wall of the main body 310 the motor 300 for cooling same, thus being timely in heat dissipation. In addition, through the internal cooling water circulation achieved by the high and low water pressure difference, the heated water obtained after heat exchange with the main body 310 of the motor 300 can flow out of the motor 300 chamber 230 in time, thus avoiding the phenomenon that since the water flow stays in the pump body 200 for a long time, the failure of the motor 300 is caused by untimely heat dissipation.

[0039] Due to the provision of the plurality of through holes 241 in the partition plate 240, on the one hand, the flow rate of water entering the motor chamber 230 is ensured to meet the cooling requirements so as to fully achieve the effect of cooling the main body 310; and on the other hand, the plurality of through holes 241 can allow the water to enter the motor chamber 230 from different points, which allows the water to flow through the outer wall of the main body 310 from different positions, and evenly distributes the cooling water on the outer side of the main body 310, thus further ensuring the effect of cooling the main body 310.

[0040] Even Further, since the annular partition 250 is disposed inside the motor chamber 230, the water entering through the through holes 241 needs to bypass the channel between the main body 310 of the motor and the annular partition 250 until reaching the motor end cover 270, then bypasses an interstice between the annular partition 250 and the motor end cover 270, flows to the channel between the annular partition 250 and the inner wall of the motor chamber 230, and then flows back into the water intake container 100 through the first return pipe 260. Firstly, the water absorbs the heat of the main body 310 on the inner side of the annular partition 250, and then flows back into the first return pipe 260 from the outer side of the annular partition 250, so as to prevent the water after absorbing the heat from affecting the cooling water just entering the motor chamber 230, and enable the cooling water to completely cover the main body 310.

[0041] The structure of unique flow channel design formed by the partition plate 240 with the plurality of through holes 241 and the annular partition 250 fully ensures that the water in the motor chamber 230 quickly contacts and fully covers the whole main body of the motor, and flows out of the motor chamber 230 in time after absorbing heat, thus effectively cooling the main body of the motor, and further achieving a more efficient and reliable cooling effect on the main body of the motor.

[0042] In an embodiment, the motor chamber is formed by assembling the motor end cover, the partition plate and side walls of the pump body; and one end of the motor is abutted against the motor end cover.

[0043] In an embodiment, the through holes are located on an output side of the impeller, and the water outlet end of the first return pipe is located on an input side of the impeller. The through holes and the water outlet end of the first return pipe are the necessary locations where the motor cooling water circulation waterway must pass through, and are respectively located on both sides of the impeller, which can ensure that the cooling water circulation waterway is propelled by the impeller, that is, the direction of the propulsion generated by the rotation of the impeller is consistent with that of the cooling water circulation waterway, so that the water flowing into the motor chamber is ensured to circulate in a closed-loop manner.

[0044] In an embodiment, the distance between each of the through holes 241 and the impeller 320 is less than the distance between the through hole 241 and the water outlet 210 of the pump body, that is, the through hole 241 is far away from the water outlet 210 of the water pump. If the through holes 241 are reserved near the water outlet 210, the amount of water entering the motor chamber 230 through the through holes 241 may not be directly proportional to the rotation speed of the impeller 320, while increasing the rotation speed of the impeller 320 will only accelerate the speed of throwing the water out from the water outlet 210, and cannot guarantee an increase in the amount of the water entering the through holes 241. It can be seen that comparing provision of the through holes 241 at the water outlet 210 with isolating the through holes 241 from the water outlet 210, isolating the through holes 241 from the water outlet 210 can make the flow rate of the water entering the motor chamber 230 positively correlated with the rotation speed of the impeller 320, ensuring a sufficient water flow rate for cooling the main body of the motor.

[0045] In one of the embodiments, the distance between the first return pipe 260 and a top end 201 of the pump body is less than the distance between the first return pipe 260 and a bottom end 202 of the pump body, that is, the first return pipe 260 is disposed at a position relatively close to an upper part of the pump body 200. If the first return pipe 260 is disposed at a position close to a lower part of the pump body 200, the sundries will sink and accumulate at a position close to the lower part of the pump body 200 due to the influence of gravity. The accumulated sundries will most likely enter the first return pipe 260 along with the water cooling circulation of the motor, thus resulting in blockages in a water cooling path, causing the water cooling circulation channel in the motor chamber 230 to be blocked and not smooth in circulation, and ultimately leading to a failure in effectively cooling the motor. Therefore, the first return pipe 260 is disposed at the position close to the upper part of the pump body 200, so that the water cooling circulation channel in the motor chamber 230 can be prevented from being blocked by the sunken debris under the influence of gravity, thereby ensuring that the circulating flow channels are unobstructed, and the efficient cooling and heat dissipation of the motor are achieved.

[0046] In one of the embodiments, the return pipes are only in fluid communication with the motor chamber 230 and the water intake container 100, and are not in fluid communication with the water outlet 210, nor with an outer side of the pump body 200. This arrangement way can make the water-cooling circulating flow channels in the motor chamber 230 avoid the influence of a water flow force at the water outlet of the pump body, ensuring that the water in the motor chamber 230 can smoothly flow back to the water intake container 100, i.e., return to a starting point of the water cooling circulation channel of the motor chamber 230; and therefore, the connectivity and continuity of the whole motor water cooling circulation path are guaranteed, and the water cooling effect of the main body of the motor is ensured to be achieved. If the first return pipe 260 of the present application is in fluid communication with the outer side of the pump body 200, due to the influence of a water flow force 210 produced by the water flowing towards the outer side of the pump body 200 from the water outlet 210, most of the water flowing out of the motor chamber 230 will be taken out of the water outlet 210 and thus cannot flow back to the water intake container 100, and the power of the water cooling circulation channel in the motor chamber 230 is insufficient; and as a result, an effective water flow loop can not be formed due to the failure in the precise connectivity of the water cooling circulation path in the motor chamber 230, a water cooling circulation loop of "the water intake container 100 of the pump body-the impeller 320-the through holes 241-the channel between the outer wall of the main body 310 of the motor and the annular partition 250-the channel between the annular partition 250 and the inner wall of the motor chamber 230-the first return pipe 260-the water intake container 100" can not be formed, and the effect of cooling the main body of the motor by means of water circulation cannot be successfully realized.

[0047] In an embodiment, the pump body 200 is further provided with a volute structure 280, the volute structure 280 is disposed inside the pump chamber 220, the impeller 320 is disposed inside the volute structure 280, a water discharge portion of the volute structure 280 is aligned with the water outlet 210, and a water intake portion of the volute structure 280 is in fluid communication with the water intake container 100. The chamber inside the volute is a volute chamber, the impeller 320 is disposed inside the volute chamber, an opening is reserved at one end of the volute structure 280 facing the water intake container 100, a water inlet end of the impeller 320 is in fluid communication with the water intake container 100 through the opening, and an opening is reserved at an upper end of the volute structure 280 for discharging water; the water in the water intake container 100 enters the volute chamber under the action of the rotation of the impeller 320; and the high pressure chamber is formed in an area between the impeller 320 and the partition plate 240 in the volute chamber under the action of the rotation of the impeller 320. After water enters the volute chamber and the volute chamber is fully filled with the water, a part of the water flows from the water discharge portion of the volute structure 280 to the water outlet 210 of the pump body 200 and then flows to the outside of the pump body 200; and the other part of the water flows into the motor 300 chamber 230 through the through holes 241 of the partition plate 240 under the action of the impeller 320.

[0048] In an embodiment, the first return pipe 260 is disposed inside the pump chamber 220, a water inlet end of the first return pipe 260 is provided on the partition plate 240 and is in fluid communication with the motor chamber 230, and a water outlet end of the first return pipe 260 is in fluid communication with the water intake container 100. The first return pipe 260 is disposed inside the pump chamber 220 and located outside the volute structure 280, the end face of the water inlet end of the first return pipe 260 is flush with the partition plate 240, and the water outlet end of the first return pipe 260 is communicated with a water storage space of the water intake container 100. Due to the above arrangement, when water flows into the first return pipe 260 through the second flow channel formed by the annular partition 250 and the inner wall of the motor 300 chamber 230, it can all flow into the first return pipe 260, thus avoiding the situation where heated water accumulates in interstices formed between the first return pipe 260, the annular partition 250, and the inner wall of the motor 300 chamber 230 and thus affects heat dissipation, when the partition plate 240 protrudes from the water inlet end of the first return pipe 260.

[0049] In an embodiment, the water intake container 100 includes a second return pipe 120, a water outlet end of the second return pipe 120 is in fluid communication with an interior of the water intake container 100, and a water inlet end of the second return pipe 120 is connected to the water outlet end of the first return pipe 260. The second return pipe 120 is disposed at one side of the water intake container 100 facing the pump body 200, the second return pipe 120 is in fluid communication with the first return pipe 260, and an interface between the first return pipe 260 and the second return pipe 120 is located inside the pump chamber 220.

[0050] In an embodiment, the diameter of the water inlet end of the second return pipe 120 is greater than that of the water outlet end of the first return pipe 260, and the water outlet end of the first return pipe 260 is nested inside the water inlet end of the second return pipe 120. By nesting the first return pipe 260 into the second return pipe 120, a good seal is maintained to ensure stable cooling water circulation flow.

[0051] In an embodiment, the inner diameters of the first return pipe 260 and the second return pipe 120 are 4-6mm, and the diameters of the through holes 241 are 4-6mm. If the diameters of the return pipes and the through holes 241 are too small, it will cause the local flow rate to be too fast, resulting in a noise produced by obvious water jetting sound; if the diameters are too large, it will cause the flow rate of cooling water circulation to be too high, resulting in a decrease in the overall efficiency of the water pump. Therefore, the inner diameters of the return pipes and the diameters of the through holes 241 should be as small as possible while meeting the requirement for the cooling water volume and not generating noise.

[0052] Exemplarily, the first return pipe 260 has an inner diameter of 4mm and an outer diameter of 5mm, the second return pipe 120 has an inner diameter of 5mm, and the first return pipe 260 is nested inside the second return pipe 120. In another example, the outer diameter of the first return pipe 260 is 6mm, the inner diameter of the second return pipe 120 is 6mm, and the first return pipe 260 is nested inside the second return pipe 120.

[0053] In an embodiment, there are 3 to 6 through holes 241, and the through holes 241 are evenly distributed around a center of the partition plate 240 as the axis. The through holes 241 are uniformly formed, so that a water flow can be enabled to cover the outer wall of the motor 300 more quickly when the water flow enters the motor 300 chamber 230 through the through holes 241, the entire main body 310 of the motor 300 can be cooled in time, and the heat dissipation efficiency is accordingly improved.

[0054] In an embodiment, the first return pipe 260 is located inside the pump chamber 220 and outside the volute structure 280. This structure ensures that the first return pipe 260 is only in fluid communication with the motor chamber 230 and the water intake container 100, which simplifies the connection structure of the water cooling path, avoids the phenomenon that the overall sealing effect and main path circulation effect of the water pump are affected due to the structural processing difficulties caused by the need for the first return pipe 260 to pass through the volute structure 280, and ensures smooth communication of the water cooling circulation path of the motor chamber and successful implementation of the water cooling circulation.

[0055] In an embodiment, the water intake container 100 further includes a filter basket 130, and the filter basket 130 is disposed inside the water intake container 100. The filter basket 130 is disposed inside the water intake container 100, there is a water storage chamber inside of the filter basket 130, and the filter basket 130 is configured to filter impurities in the swimming pool water.

[0056] The improved structure of the water pump provided by the present application effectively solves the problems in the prior art that the motor is cooled by a fan with loud noise, and the motor is cooled by water flow with low efficiency and poor effect. Due to the unique structural arrangement of the water pump, such as the plurality of through holes, the annular partition, the first return pipe and the second return pipe, an efficient water cooling circulation channel is established in the motor chamber, and the precise connectivity of the water cooling circulation channel for the motor is guaranteed. The water channel structure design effectively improves the water utilization rate in a water cooling cycle process, avoids the energy loss in the water cooling cycle process, fully improves the efficiency of cooling the motor by means of water flow, and achieves the effects of high noise reduction, efficient water cooling, environmental protection and energy conservation.

[0057] The foregoing descriptions are examples of the best embodiments of the present disclosure, and the parts not described in detail therein are the common general knowledge of those having ordinary skill in the art. The protection scope of the present disclosure is subject to the content of the claims.

Claims

1. A water pump for a swimming pool, comprising: a water intake container (100), a water inlet (110) being provided at one side of the water intake container (100); a pump body (200), provided with a water outlet (210), a pump chamber (220), a motor chamber (230), a partition plate (240), an annular partition (250), a motor end cover (270) and a first return pipe (260), wherein the water outlet (210) is in fluid communication with the pump chamber (220), the partition plate (240) is configured to separate the pump chamber (220) from the motor chamber (230), the motor end cover (270) is disposed at an end of the pump body (200) away from the water intake container (100), the annular partition (250) is disposed inside the motor chamber (230), one end of the annular partition (250) is connected to the partition plate (240), the other end of the annular partition (250) is spaced apart from the motor end cover (270) by a preset distance gap, the first return pipe (260) is disposed inside the pump chamber (220), a water inlet end of the first return pipe (260) is provided on the partition plate (240) and is in fluid communication with the motor chamber (230), the water inlet end of the first return pipe (260) is located between the annular partition (250) and an inner wall of the motor chamber (230), and a water outlet end of the first return pipe (260) is in fluid communication with the water intake container (100);and a motor (300), comprising a main body (310) and an impeller (320), the impeller (320) being disposed inside the pump chamber (220), the main body (310) being disposed inside the motor chamber (230) and located at an inner side of the annular partition (250), an output end of the main body (310) being connected to the impeller (320) after passing through the partition plate (240), and the partition plate (240) having two or more through holes (241) at positions between the annular partition (250) and the main body (310), wherein the through holes (241) are configured to allow water to flow from the pump chamber (220) to a position between the annular partition (250) and an outer wall of the main body (310), pass through a position between the annular partition (250) and the inner wall of the motor chamber (230), and then flow into the water intake container (100) through the first return pipe (260).

2. The water pump for the swimming pool according to claim 1, wherein the motor chamber (230) is formed by assembling the motor end cover (270), the partition plate (240) and side walls of the pump body (200); and one end of the motor (300) is abutted against the motor end cover (270).

3. The water pump for the swimming pool according to claim 1, wherein the through holes (241) are located on an output side of the impeller (320), and a water outlet of the first return pipe (260) is located on an input side of the impeller (320).

4. The water pump for the swimming pool according to any one of claims 1-3, wherein the distance between each of the through holes (241) and the output side of the impeller (320) is less than the distance between the through hole (241) and the water outlet (210) of the pump body (200).

5. The water pump for the swimming pool according to claim 1, wherein the distance between the first return pipe (260) and a top end (201) of the pump body (200) is less than the distance between the first return pipe (260) and a bottom end (202) of the pump body (200).

6. The water pump for the swimming pool according to claim 5, wherein the first return pipe (260) is not in fluid communication with the water outlet (210).

7. The water pump for the swimming pool according to claim 5, wherein the water intake container (100) comprises a second return pipe (120), a water outlet end of the second return pipe (120) is in fluid communication with an interior of the water intake container (100), and a water inlet end of the second return pipe (120) is connected to the water outlet end of the first return pipe (260).

8. The water pump for the swimming pool according to claim 7, wherein the inner diameter of the water inlet end of the second return pipe (120) is greater than the outer diameter of the water outlet end of the first return pipe (260), and the water outlet end of the first return pipe (260) is nested inside the water inlet end of the second return pipe (120).

9. The water pump for the swimming pool according to claim 7, wherein the inner diameters of the first return pipe (260) and the second return pipe (120) are 4-6 mm.

10. The water pump for the swimming pool according to claim 1, wherein there are 3 to 6 through holes (241), and the through holes (241) are distributed around a center of the partition plate (240) as the axis.

11. The water pump for the swimming pool according to claim 1, wherein the diameters of the through holes (241) are 4-6 mm.

12. The water pump for the swimming pool according to claim 1, wherein the pump body (200) is further provided with a volute structure (280), the volute structure (280) is disposed inside the pump chamber (220), the impeller (320) is disposed inside the volute structure (280), a water discharge portion of the volute structure (280) is aligned with the water outlet (210), and a water intake portion of the volute structure (280) is in fluid communication with the water intake container (100).

13. The water pump for the swimming pool according to claim 12, wherein the first return pipe (260) is located outside the volute structure (280).

14. The water pump for the swimming pool according to claim 1, wherein the water intake container (100) further comprises a filter basket (130), and the filter basket (130) is disposed inside the water intake container (100).

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