Water-cooling water pump

Abstract

The utility model discloses a water-cooling water pump, which relates to the technical field of water pumps and comprises a shell, a water inlet cavity, a power cavity and a cooling cavity are arranged in the shell, the power cavity is provided with a water inlet communicated with the water inlet cavity, a water outlet communicated with the outside is arranged in the power cavity, an impeller is arranged in the power cavity, and a partition plate is arranged between the power cavity and the cooling cavity. The partition plate is provided with a plurality of communicating holes, a motor and a spacer bush surrounding the radial outer side of the motor are installed in the cooling cavity, the spacer bush divides the cooling cavity into a water inlet channel and a water drainage channel, the partition plate is provided with a water return pipe capable of communicating the water drainage channel with the water inlet cavity, the water return pipe is not communicated with the water outlet, and water enters the water inlet channel from the communicating holes and cools the motor. The cooled water can be discharged into the water inlet cavity through the drainage channel so as to increase the contact area between the cooling water and the motor, and the cooled water is independently conveyed to the water inlet cavity and is not communicated with the water outlet, so that the cooling water can be prevented from being interfered by water flow of the main circulating water flow channel of the water pump, and the cooling effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a water-cooled water pump. Background Art

[0002] In the related art, the motor of the water pump will generate a lot of heat when it is running continuously. At present, water flow is generally used to flush the outer surface of the motor to cool the motor. This cooling method is quieter and has a simpler structure than the method of cooling the motor with a fan. However, the cooling cycle effect of the current water-cooled water pump is poor due to structural limitations, and the expected water cooling effect cannot be achieved. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a water-cooling water pump, which can improve the water-cooling circulation effect, thereby improving the heat dissipation effect.

[0004] A water-cooled water pump according to an embodiment of the utility model includes:

[0005] The shell has a water inlet chamber, a power chamber and a cooling chamber inside. The power chamber is provided with a water inlet connected to the water inlet chamber, and the power chamber is provided with a water outlet connected to the outside. An impeller is arranged in the power chamber, and a partition plate is arranged between the power chamber and the cooling chamber. The partition plate has a plurality of connecting holes. A motor and a spacer sleeve surrounding the radial outer side of the motor are installed in the cooling chamber. The spacer sleeve divides the cooling chamber into a water inlet channel and a drainage channel. The water inlet channel and the drainage channel are connected at one end of the spacer sleeve away from the partition plate. A return pipe that can connect the drainage channel and the water inlet chamber is arranged on the partition plate, and the return pipe is not connected to the water outlet.

[0006] A water-cooled water pump according to an embodiment of the utility model has at least the following beneficial effects: the present embodiment is provided with a shell, wherein a water inlet chamber, a power chamber and a cooling chamber are provided inside the shell, the power chamber is provided with a water inlet connected to the water inlet chamber, the power chamber is provided with a water outlet connected to the outside, an impeller is provided in the power chamber, a partition plate is provided between the power chamber and the cooling chamber, a plurality of connecting holes are provided on the partition plate, a motor and a spacer sleeve surrounding the radial outer side of the motor are installed in the cooling chamber, the spacer sleeve divides the cooling chamber into a water inlet channel and a drainage channel, the water inlet channel and the drainage channel are connected at one end of the spacer sleeve away from the partition plate, a return water pipe connecting the drainage channel and the water inlet chamber is provided on the partition plate, and the return water pipe is not connected to the water outlet, the impeller can make water enter the water inlet channel from the connecting hole and cool the motor, the water for cooling the motor can be discharged into the water inlet chamber through the drainage channel, the contact area between the cooling water and the motor can be increased, and the cooled water is separately transported to the water inlet chamber without being connected to the water outlet, so as to avoid the cooling water being interfered by the water flow in the main circulation water flow channel of the water pump, which is beneficial to improving the cooling effect.

[0007] According to some embodiments of the present invention, the distance between the connecting hole and the impeller is smaller than the distance between the connecting hole and the water outlet.

[0008] According to some embodiments of the present utility model, the connecting hole is located on the output side of the impeller, and the water outlet end of the return pipe is located on the input side of the impeller.

[0009] According to some embodiments of the utility model, the water outlet is located at the upper part of the shell, the water outlet end of the return pipe is located at the input side of the impeller, and the return pipe is located radially outside the impeller and close to one side of the water outlet.

[0010] According to some embodiments of the present invention, the communicating holes are distributed on the partition plate around the rotation axis of the impeller.

[0011] According to some embodiments of the utility model, a volute is provided in the power chamber, and the impeller is arranged inside the volute.

[0012] According to some embodiments of the present invention, the water return pipe is located outside the volute in the power chamber.

[0013] According to some embodiments of the utility model, a connecting pipe is provided on the side wall of the water inlet chamber, and two ends of the connecting pipe are respectively connected to the return pipe and the water inlet chamber.

[0014] According to some embodiments of the present invention, a seal is provided between the partition plate and the impeller, and the impeller has an extension portion inserted into the partition plate, and a radial outer wall of the extension portion abuts against the seal.

[0015] According to some embodiments of the utility model, a fixedly connected end cover is provided on the shell at the end of the cooling chamber, and a gap is provided between the end cover and the spacer sleeve.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 A cross-sectional view of a water-cooled water pump in an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A magnified view of center A;

[0020] Figure 3 for Figure 1 Magnified view of middle B;

[0021] Figure 4 This is an internal view of a water-cooled water pump in an embodiment of the utility model.

[0022] Reference numerals:

[0023] Shell 100; power unit 101; water storage unit 102; water inlet chamber 103; connecting pipe 104; embedding groove 105; channel 106;

[0024] Power chamber 110; water inlet 111; impeller 112; connecting hole 113; return pipe 114; water outlet 115; extension part 116; sealing member 117; outer edge 118; support sleeve 119;

[0025] Cooling chamber 120; partition plate 121; motor 122; spacer 123; water inlet 124; drain 125; rotating shaft 126; elastic member 127; end cover 128; moving ring 129; fixed ring 130; mounting rib 131; volute 132; through port 133. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the related art, the motor of the water pump will generate a lot of heat when it is running continuously. At present, water flow is generally used to flush the outer surface of the motor to cool the motor. This cooling method is quieter and has a simpler structure than the method of cooling the motor with a fan. However, the cooling cycle effect of the current water-cooled water pump is poor due to structural limitations, and the expected water cooling effect cannot be achieved.

[0031] To solve the above problems, refer to Figure 1 The embodiment of the utility model provides a water-cooled water pump, including a housing 100, wherein a water inlet chamber 103, a power chamber 110 and a cooling chamber 120 are provided inside the housing 100. It is understood that the water inlet chamber 103, the power chamber 110 and the cooling chamber 120 are connected in sequence, the power chamber 110 is provided with a water inlet 111 connected to the water inlet chamber 103, and a water outlet 115 connected to the outside is provided on one side of the power chamber 110, and an impeller 112 is provided in the power chamber 110. Furthermore, a motor 122 is installed in the cooling chamber 120, and the motor 122 is provided with a rotating shaft 126, which is plugged into the impeller 112 to achieve power connection. It is understood that the motor 122 can drive the impeller 112 to rotate, pump the water in the water inlet chamber 103 into the power chamber 110, and pump the water out from the water outlet 115 to achieve the water supply function.

[0032] It can be understood that a partition plate 121 is provided between the power chamber 110 and the cooling chamber 120. The partition plate 121 has a plurality of connecting holes 113. The connecting holes 113 allow the power chamber 110 and the cooling chamber 120 to communicate with each other. At the same time, a spacer sleeve 123 is provided in the cooling chamber 120 and surrounds the radial outer side of the motor 122. The spacer sleeve 123 divides the cooling chamber 120 into an inlet channel 124 and a drain channel 125. The inlet channel 124 is located on the radial outer side of the motor 122, and the drain channel 125 is located on the side of the spacer sleeve 123 away from the inlet channel 124. The inlet channel 124 and the drain channel 125 are connected at one end of the spacer sleeve 123 away from the partition plate 121. The connecting holes 113 are connected to the inlet channel 124. The partition plate 121 is provided with a return pipe 114 that can connect the drain channel 125 with the water inlet chamber 103. Figure 4 The return pipe 114 is fixedly installed on the inner wall of the power chamber 110. Furthermore, the inner wall of the power chamber 110 is provided with a mounting rib 131, and the return pipe 114 is fixedly connected to one side of the mounting rib 131. It can be understood that the shell 100 is cast using a metal material. By setting the mounting rib 131, the return pipe 114 and the shell 100 can be integrally formed, which is beneficial to simplify the processing steps and realize independent drainage of the return pipe 114, thereby ensuring a good water cooling effect on the motor 122.

[0033] It can be understood that the connecting hole 113 is located on the output side of the impeller 112, and the water outlet end of the return pipe 114 is located on the input side of the impeller 112. The connecting hole 113 and the water outlet end of the return pipe 114 are respectively the necessary positions of the cooling water circulation waterway of the motor 122. The two are respectively located on both sides of the impeller 112, which can ensure that the cooling water circulation waterway is driven by the impeller 112, that is, the thrust generated by the rotation of the impeller 112 is consistent with the direction of the cooling water circulation, ensuring that the water flow entering the cooling chamber 120 can be circulated and closed.

[0034] Furthermore, along the radial direction of the impeller 112, the distance between the connecting hole 113 and the impeller 112 is smaller than the distance between the connecting hole 113 and the water outlet 115. It can be understood that the connecting hole 113 is far away from the water outlet 115. If the connecting hole 113 is set close to the water outlet 115, the amount of water entering the cooling chamber 120 through the connecting hole 113 is not necessarily proportional to the rotation speed of the impeller 112. The increase in the speed of the impeller 112 will only accelerate the discharge of water from the water outlet 115, but cannot ensure that the amount of water entering the connecting hole 113 increases. It can be seen that compared with placing the connecting hole 113 close to the water outlet 115 and placing the connecting hole 113 away from the water outlet 115, the latter can make the water flow entering the cooling chamber 120 positively correlated with the rotation speed of the impeller 112, ensuring that the water flow used to cool the motor 122 is sufficient.

[0035] It can be understood that the spacer sleeve 123 is arranged on the radially outer side of the motor 122. Therefore, along the diameter direction of the motor 122, the water inlet 124 is an annular space formed between the inner wall of the spacer sleeve 123 and the outer wall of the motor 122, and the drain 125 is an annular space formed between the outer wall of the spacer sleeve 123 and the inner wall of the cooling chamber 120. In the process of cooling the motor 122, water enters the water inlet 124 from the connecting hole 113 and contacts the outer wall of the motor 122. The heat of the motor 122 can be transferred to the water. The water for cooling the motor 122 can enter the return pipe 114 through the drain 125, and then be discharged to the water inlet chamber 103 through the return pipe 114. In addition, the cooling water flows from the water inlet 124 to the drain 125, which can ensure that the cooling water and the motor 122 remain in contact, which is beneficial to increase the heat exchange effect.

[0036] Furthermore, the return pipe 114 is not connected to the water outlet 115, that is, the cooled water is transported to the water inlet chamber 103 alone through the return pipe 114, which can avoid the interference between the discharged water after cooling and the water flow of the power chamber 110, which is conducive to maintaining the stability of the cooling water flow and improving the cooling effect. In addition, the return pipe 114 is not connected to the outside of the shell 100, which can make the water cooling circulation channel avoid the influence of the water flow force of the pump body water outlet 115, ensure that the water in the cooling chamber 120 can smoothly return to the water inlet chamber 103, that is, return to the starting point of the water cooling circulation channel 106, ensure the closure and continuity of the water cooling circulation channel of the entire motor 122, and ensure the water cooling effect of the main body of the motor 122. If the return pipe 114 is connected to the outside of the outer shell, due to the influence of the water flowing out of the water outlet 115, most of the water flowing out of the cooling chamber 120 will be brought to the water outlet 115 and cannot flow back to the water inlet chamber. The water cooling circulation channel 106 in the cooling chamber 120 is insufficiently powered, which makes it impossible for the water cooling circulation passage in the cooling chamber 120 to be tightly closed to form an effective water flow loop, and it is impossible to form a water cooling circulation loop of "water inlet chamber 103-impeller 112-connecting hole 113-water inlet channel 124-drainage channel 125-return pipe 114-water inlet chamber 103", resulting in the inability to smoothly achieve the effect of cooling the motor 122 through water circulation.

[0037] It is understandable that, in the vertical direction, the water outlet 115 is located at the upper part of the housing 100, and at the same time, the water return pipe 114 is located at the radial outer side of the impeller 112 and close to one side of the water outlet 115, that is, the distance between the water return pipe 114 and the top of the power chamber 110 is smaller than the distance between the water return pipe 114 and the bottom of the power chamber 110, so as to ensure that in the cooling process of the motor 122, water fills the cooling chamber 120 from bottom to top, and is discharged from the upper part of the cooling chamber 120 through the water return pipe 114, so as to ensure that the motor 122 is fully in contact with the water and ensure a good cooling effect. If the water return pipe 114 is set at the bottom of the power chamber 110, then under the influence of gravity, the debris sinks and accumulates at the bottom of the power chamber 110, and the accumulated debris is very likely to enter the water return pipe 114 with the water cooling circulation of the motor 122, causing the water cooling passage to be blocked, resulting in the water cooling circulation channel 106 in the cooling chamber 120 being blocked, the circulation is not smooth, and finally the motor 122 cannot be effectively cooled. Therefore, setting the return pipe 114 near the top of the power chamber 110 can prevent the water cooling circulation channel 106 in the cooling chamber 120 from being blocked by sinking debris due to gravity, thereby ensuring that the circulation flow path is unobstructed and ensuring efficient cooling and heat dissipation of the motor 122.

[0038] Furthermore, a plurality of connecting holes 113 are distributed on the partition plate 121 around the rotation axis of the impeller 112, that is, along the circumferential direction of the impeller 112, the partition plate 121 is provided with a plurality of connecting holes 113, which helps to improve the water circulation efficiency during the cooling process, thereby taking away more heat and helping to improve the cooling effect.

[0039] Furthermore, the axial direction of the connecting hole 113 is parallel to the rotation axis direction of the impeller 112. It can be understood that the direction of the water flow from the water inlet chamber 103 to the power chamber 110 is parallel to the rotation axis direction of the impeller 112. Therefore, the direction of the connecting hole 113 is consistent with the water flow direction, which helps to improve the efficiency of water entering the cooling chamber 120, thereby improving the cooling cycle efficiency.

[0040] It can be understood that the housing 100 includes a water storage part 102 and a power part 101 connected to each other, the water storage part 102 has a water inlet chamber 103, the power part 101 includes a power chamber 110 and a cooling chamber 120, the water storage part 102 is connected to the power part 101, a connecting pipe 104 is provided on the side wall of the water inlet chamber 103, and the two ends of the connecting pipe 104 are respectively connected to the return pipe 114 and the water inlet chamber 103. Figure 3 , an embedding groove 105 is provided on one side of the water storage part 102 close to the power part 101, the embedding groove 105 is located at the end of the connecting pipe 104, and the return pipe 114 can be inserted into the embedding groove 105 to ensure the accurate docking of the return pipe 114 and the connecting pipe 104. Further, there is a gap between the radial outer wall and the end face of the return pipe 114 and the inner wall of the embedding groove 105. Since the water storage part 102 and the power part 101 have a certain position error after installation, retaining the gap between the return pipe 114 and the embedding groove 105 can avoid interference during installation.

[0041] Reference Figure 4A volute 132 is also provided in the power chamber 110. The volute 132 is covered on the radial outer periphery of the impeller 112. The top of the volute 132 has a through hole 133 corresponding to the position of the water outlet 115, and the volute 132 is connected with the water inlet 111 at a position close to the rotation center of the impeller 112. It can be understood that when the impeller 112 rotates, water enters the volute 132 from the water inlet 111, and high pressure is formed in the volute 132. After the volute 132 is filled with water, part of the water flows from the through hole 133 of the volute 132 to the water outlet 115 and is discharged to the outside, and the other part of the water flows into the cooling chamber 120 from the connecting hole 113 to realize the cooling function of the motor 122. The provision of the volute 132 is beneficial to increasing the water pressure in the power chamber 110, thereby improving the water pumping efficiency. Furthermore, along the vertical direction, the return pipe 114 is located outside the volute 132 in the power chamber 110, which helps to ensure that the return pipe 114 only connects the cooling chamber 120 and the water inlet chamber 103, simplifies the connection structure of the water cooling passage, and avoids structural processing difficulties caused by the return pipe 114 passing through the volute 132, affecting the overall sealing effect of the water pump and even affecting the main circulation effect of the water pump, thereby ensuring smooth connection of the water cooling circulation passage in the motor 122 chamber and ensuring the effect of the water cooling circulation.

[0042] Reference Figure 2 A seal 117 is provided between the partition plate 121 and the impeller 112. The impeller 112 has an extension portion 116 inserted into the partition plate 121. It can be understood that the partition plate 121 has a channel 106 for allowing the shaft 126 to pass through. The shaft 126 passes through the channel 106 and is inserted into the extension portion 116 to achieve power transmission to the impeller 112. Furthermore, the radial outer wall of the extension portion 116 abuts against the seal 117 to achieve radial sealing between the seal 117 and the extension portion 116.

[0043] Furthermore, the portion where the channel 106 is provided on the partition plate 121 is provided with a fixed ring 130 and a movable ring 129. The fixed ring 130 is fixedly mounted on the side of the channel 106 close to the impeller 112. Along the direction of the rotation axis 126 of the impeller 112, the side wall of the movable ring 129 abuts against the side wall of the fixed ring 130, and the two ends of the seal 117 abut against the side wall of the impeller 112 and the side wall of the movable ring 129, respectively, so as to achieve an axial seal between the impeller 112 and the partition plate 121. It can be understood that the seal 117 can rotate with the impeller 112, and the movable ring 129 can rotate with the seal 117, so as to avoid friction damage between the end of the seal 117 and the partition plate 121. Furthermore, the fixed ring 130 and the movable ring 129 can be made of metal material, which helps to improve the wear resistance, and the seal 117 is made of elastic material such as silicone, rubber, etc., to achieve good sealing.

[0044] Furthermore, along the direction of the rotation axis of the impeller 112, both ends of the seal 117 have outer edges 118 extending radially, and an elastic member 127 is provided between the two outer edges 118. Both ends of the elastic member 127 elastically press against the side walls of the outer edges 118, so that both ends of the seal 117 can stably press against the side walls of the impeller 112 and the side walls of the dynamic ring 129, thereby achieving good axial sealing.

[0045] Furthermore, a coil spring can be used for the elastic member 127, and a support sleeve 119 is provided between the end face of the elastic member 127 and the outer edge 118 along the rotation axis direction of the impeller 112. The end face of the elastic member 127 is pressed against the side wall of the support sleeve 119, which helps to increase the pressure-contact stability between the elastic member 127 and the outer edge 118 and reduce the internal stress of the outer edge 118, thereby helping to increase the service life and ensure continuous and effective sealing.

[0046] Reference Figure 1 A fixedly connected end cover 128 is provided at the end of the cooling chamber 120 on the shell 100. The end cover 128 is detachably mounted on the shell 100 to enable the motor 122 to be disassembled and assembled. There is a gap between the end cover 128 and the spacer 123 to ensure that the water inlet 124 and the drain 125 are connected to each other to achieve a circulating cooling function.

[0047] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A water-cooled water pump, characterized in that: include: A shell, wherein a water inlet chamber, a power chamber and a cooling chamber are provided inside, the power chamber is provided with a water inlet connected to the water inlet chamber, the power chamber is provided with a water outlet connected to the outside, an impeller is provided in the power chamber, a partition plate is provided between the power chamber and the cooling chamber, the partition plate has a plurality of connecting holes, a motor and a spacer sleeve surrounding the radial outer side of the motor are installed in the cooling chamber, the spacer sleeve divides the cooling chamber into a water inlet channel and a drainage channel, the water inlet channel and the drainage channel are connected at one end of the spacer sleeve away from the partition plate, a return pipe that can connect the drainage channel and the water inlet chamber is provided on the partition plate, and the return pipe is not connected to the water outlet.

2. A water-cooled water pump according to claim 1, characterized in that: The distance between the communicating hole and the impeller is smaller than the distance between the communicating hole and the water outlet.

3. A water-cooled water pump according to claim 1, characterized in that: The communicating hole is located at the output side of the impeller, and the water outlet end of the water return pipe is located at the input side of the impeller.

4. A water-cooled water pump according to claim 1, characterized in that: The water outlet is located at the upper part of the shell, and the water return pipe is located at the radial outer side of the impeller and close to one side of the water outlet.

5. A water-cooled water pump according to claim 1, characterized in that: The communicating holes are distributed on the partition plate around the rotation axis of the impeller.

6. A water-cooled water pump according to claim 1, characterized in that: A volute is provided in the power cavity, and the impeller is arranged inside the volute.

7. A water-cooled water pump according to claim 6, characterized in that: The water return pipe is located outside the volute in the power chamber.

8. The water-cooled water pump according to claim 1, characterized in that: A connecting pipe is arranged on the side wall of the water inlet chamber, and two ends of the connecting pipe are respectively connected with the water return pipe and the water inlet chamber.

9. The water-cooled water pump according to claim 1, characterized in that: A sealing member is provided between the partition plate and the impeller. The impeller has an extension portion inserted into the partition plate. The radial outer wall of the extension portion abuts against the sealing member.

10. The water-cooled water pump according to claim 6, characterized in that: An end cover fixedly connected to the shell body is provided at the end of the cooling cavity, and a gap is provided between the end cover and the spacer sleeve.

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