Water-cooled pump

Abstract

This invention relates to a water-cooled pump, comprising a housing and a motor assembly. The housing has a partition cylinder and at least one impeller. The partition cylinder is disposed within the housing and divides the internal space of the housing into a rotor impeller space and a stator space. The rotor impeller space and the stator space are not connected. The impeller is disposed within the rotor impeller space. The motor assembly is disposed within the housing and has a rotor and a stator. The rotor is disposed within the rotor impeller space and located within the partition cylinder. The stator is disposed within the stator space and surrounds the partition cylinder. By separately disposing the rotor and stator within the rotor impeller space and the stator space, and by filling the rotor impeller space with cooling liquid, the rotor can directly contact the cooling liquid, effectively increasing the rotor's heat dissipation efficiency.

Description

Water-cooled pump Technical Field

[0001] This invention relates to a pump, and more particularly to a water-cooled pump. Prior Technology

[0002] Existing water-cooled pumps include at least a motor assembly, a motor housing, a water-cooling housing, and an impeller. The motor assembly is disposed within the motor assembly housing and connected to the impeller. The motor housing is disposed within the water-cooling housing, and the heat of the motor assembly inside the motor housing is transferred to the outside through cooling water within the water-cooling housing, thereby dissipating heat from the motor assembly.

[0003] However, in this heat dissipation method, the cooling water in the water-cooled cylinder does not directly contact the operating motor components. Instead, heat is transferred to the motor cylinder via air before the water in the cooling cylinder transfers the heat to the outside. The efficiency of this heat dissipation method needs improvement. Therefore, existing water-cooled pumps require further improvement. Summary of the Invention

[0004] In view of the aforementioned shortcomings and deficiencies of the prior art, the present invention provides a water-cooled pump, which solves the problem that the motor assembly of the existing water-cooled pump needs to transfer heat through the air, resulting in insufficient heat dissipation efficiency.

[0005] To achieve the aforementioned novel objective, this invention provides a water-cooled pump, which has the following features: An outer casing, which has: A partition cylinder is disposed within the outer casing, dividing the internal space of the outer casing into a rotor impeller space and a stator space; the rotor impeller space and the stator space are not connected. At least one impeller is rotatably disposed in the rotor impeller space; A motor assembly, disposed within the housing, and having: A stator, which is disposed in the stator space and surrounds the partition cylinder; A rotor is rotatably disposed in the rotor impeller space and located within the partition cylinder; the rotor is magnetically coupled to the stator and can be driven to rotate by the stator; A shaft is rotatably disposed between the rotor and the at least one impeller. The shaft is driven to rotate by the rotor and drives the at least one impeller to rotate.

[0006] In this novel water-cooled pump, the rotor impeller space is filled with liquid to cool the motor assembly, and the motor assembly drives the impeller to transport the liquid within the rotor impeller space. When the rotor of the motor assembly rotates and the impeller is driven by the shaft, the heat dissipated by the rotor is carried away by the cooling system in the rotor impeller space and dissipated.

[0007] In summary, this novel design, by placing the rotor and stator in the rotor impeller space and stator space respectively, and by filling the rotor impeller space with cooling liquid, allows the rotor to directly contact the cooling liquid, effectively increasing the rotor's heat dissipation efficiency and thus improving the heat dissipation efficiency of the water-cooled pump of this novel design.

[0008] Furthermore, the water-cooled pump has a shaft core fixing cover disposed in the rotor impeller space and located between the rotor and the at least one impeller, dividing the rotor impeller space into a rotor space and a pump chamber; the rotor is disposed in the rotor space; the shaft core fixing cover has a through bearing hole formed therethrough, and the shaft core rotatably passes through the bearing hole of the shaft core fixing cover.

[0009] Furthermore, the water-cooled pump, wherein A ring wall protrudes from one side of the shaft core fixing cover, defining a bearing mounting channel. The bearing hole of the shaft core fixing cover is one opening of the bearing mounting channel. The shaft is rotatably inserted through the bearing channel; the two opposite ends of the shaft are a rotor end and an impeller end, respectively, with the rotor end located in the rotor space.

[0010] Furthermore, in the water-cooled pump, the shaft fixing cover has at least one coolant hole that penetrates both opposite sides of the shaft fixing cover and connects the rotor space and the pump chamber.

[0011] Furthermore, in the water-cooled pump, the shaft has a connecting channel that extends through the shaft along its axial direction, and the end of the connecting channel near the rotor connects to the rotor impeller space.

[0012] Furthermore, the water-cooled pump, wherein, The separator cylinder has a plurality of cylinder body fitting portions, which are arranged circumferentially and spaced around an outer circumferential surface of the separator cylinder; The stator has a plurality of stator fitting portions formed thereon, which are arranged at intervals around the partition cylinder and respectively fit into the cylinder body fitting portions of the partition cylinder.

[0013] Furthermore, in the water-cooled pump, the cylinder fittings are elongated and extend axially along the shaft core.

[0014] Furthermore, in the water-cooled pump, the partition cylinder has: The body of the tube is formed as follows: A rotor space, in which the rotor is disposed; A water-cooling opening is formed at one end of the cylinder near the at least one impeller; An extension is provided at one end of the cylinder body near the at least one impeller and extends radially outward along the cylinder body.

[0015] Furthermore, the water-cooled pump further includes a sealing ring that is sealed between the extension and the housing to prevent the rotor impeller space from communicating with the stator space. Simple Explanation of the Diagram

[0016] Figure 1 is a perspective view of this invention; Figure 2 is an exploded view of this invention; Figure 3 is a cross-sectional view of this novel invention; Figure 4 is a cross-sectional view of the present invention along section line AA in Figure 3; Figure 5 is a partial exploded view of this novel invention; Figure 6 is a partial cross-sectional view of this novel invention. Implementation

[0017] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means employed by the present invention to achieve its intended purpose.

[0018] Please refer to Figures 1 to 4. The water-cooled pump of this invention includes a housing 10 and a motor assembly 20. In this embodiment, it further includes a shaft core fixing cover 30 and a sealing ring 40.

[0019] The housing 10 has a partition cylinder 11 and at least one impeller 12. The partition cylinder 11 is disposed in the housing 10 and divides the internal space of the housing 10 into a rotor impeller space 13 and a stator space 14. The rotor impeller space 13 and the stator space 14 are not interconnected. Specifically, the rotor impeller space 13 is filled with coolant, and because the rotor impeller space 13 and the stator space 14 are not interconnected, the coolant does not flow into the stator space 14. The impeller 12 is rotatably disposed in the rotor impeller space 13.

[0020] In this embodiment, the separator 11 has a body portion 111 and an extension portion 112. The body portion 111 forms a rotor space 1111 and a water-cooling opening 1112, and has a plurality of body fitting portions 1113. The rotor space 1111 is the internal space of the body portion 111, and the water-cooling opening 1112 is formed at one end of the body portion 111 near the impeller 12. The rotor space 1111 is used to accommodate liquid for cooling the motor assembly 20. The body fitting portions 1113 are spaced apart on an outer annular surface of the body portion 111, and each body fitting portion 1113 extends axially along the body portion 111.

[0021] An extension 112 is provided at one end of the cylinder body 111 near the water cooling opening 1112 and extends radially outward along the cylinder body 111. Specifically, the extension 112 extends radially from the cylinder body 111 to fit an inner annular surface of the outer casing 10, so that the partition cylinder 11 can separate the rotor impeller space 13 and the stator space 14 in the outer casing 10.

[0022] The motor assembly 20 is disposed within the housing 10 and includes a stator 21, a rotor 22, and a shaft 23. The stator 21 is disposed in the stator space 14 and surrounds the partition cylinder 11. The stator 21 has a plurality of stator fitting portions 211. The stator fitting portions 211 are spaced apart around the partition cylinder 11 and respectively fit into the cylinder body fitting portion 1113 of the partition cylinder 11. Thus, when the motor assembly 20 is operating, the cylinder body fitting portion 1113 can fix the stator 21 and prevent the partition cylinder 11 from rotating or moving due to vibration during the operation of the motor assembly 20.

[0023] The rotor 22 is rotatably disposed within the rotor impeller space 13 and located within the partition cylinder 11. The rotor 22 is magnetically coupled to the stator 21 and can be driven to rotate by the stator 21. Specifically, the rotor 22 is rotatably disposed within the rotor space 1111, thereby allowing it to directly contact the cooling liquid in the rotor space 1111 and dissipate heat when rotating within the partition cylinder 11. In other words, the partition cylinder 11 is disposed between the rotor 22 and the stator 21.

[0024] Please refer to Figures 3 to 6. The shaft core 23 is rotatably inserted through the rotor 22 and impeller 12. Driven by the rotor 22, the shaft core 23 rotates, causing the impeller 12 to rotate as well. The two opposite ends of the shaft core 23 are a rotor end 231 and an impeller end 232, respectively. The rotor end 231 is located in the rotor space 1111. Specifically, the shaft core 23 is located in the rotor-impeller space 13 and does not penetrate the partition cylinder 11. The shaft core 23 has a connecting channel 233 that extends axially through the shaft core 23, and the end of the connecting channel 233 near the rotor 22 connects to the rotor-impeller space 13. In other words, the shaft core 23 is a hollow shaft.

[0025] Please refer to Figures 2 to 6. The shaft core fixing cover 30 provides a rotor impeller space 13, located between the rotor 22 and the impeller 12, and can divide the rotor impeller space 13 into a rotor space 1111 and a pump chamber 1114. The impeller 12 is disposed in the pump chamber 1114. In this embodiment, the outer ring surface of the shaft core fixing cover 30 abuts against the inner ring surface of the cylinder body 111. In other embodiments, the outer ring surface of the shaft core fixing cover 30 may not abut against the inner ring surface of the cylinder body 111, but rather against the inner ring surface of the outer shell 10, as long as the rotor impeller space 13 can be divided into the rotor space 1111 and the pump chamber 1114. In this embodiment, the shaft core fixing cover 30 has a bearing hole 31, an annular wall 32, and at least one coolant hole 33.

[0026] The bearing hole 31 penetrates the shaft core fixing cover, and the shaft core 23 rotatably penetrates the bearing hole 31 of the shaft core fixing cover 30. An annular wall 32 protrudes from one side of the shaft core fixing cover 30. The annular wall 32 defines a bearing mounting channel 321, and the bearing hole 31 of the shaft core fixing cover 30 is one opening of the bearing mounting channel 321. A bearing is disposed in the bearing mounting channel 321 and the bearing hole 31. In this embodiment, since the shaft core 23 is located in the rotor impeller space 13 and does not penetrate the partition cylinder 11, the shaft core 23 is fixed only by the bearing within the bearing mounting channel 321. In this embodiment, the axial length of the bearing mounting channel 321 is 1 to 1.5 times the diameter of the bearing mounting channel 321, but is not limited to this, as long as it is sufficient to fix the shaft core 23.

[0027] Coolant holes 33 penetrate both sides of the shaft core fixing cover 30 and connect the rotor space 1111 and the pump chamber 1114. In this way, cooling liquid can be transported between the rotor space 1111 and the pump chamber 1114.

[0028] A sealing ring 40 is sealingly disposed between the extension 112 and the housing 10 to prevent communication between the rotor impeller space 13 and the stator space 14. This confines the cooling liquid in the rotor space 1111 and the liquid to be pumped in the pump chamber 1114 within the rotor impeller space 13, preventing it from flowing into the stator space 14.

[0029] In use, the rotor impeller space 13 of this novel water-cooled pump is filled with liquid to cool the motor assembly 20, and the motor assembly 20 drives the impeller 12 to transport liquid within the rotor impeller space 13. When the rotor 22 of the motor assembly 20 rotates, and the impeller 12 is driven to rotate by the shaft core 23, the heat dissipated by the rotor 22 is carried away by the cooling in the rotor impeller space 13 and dissipated.

[0030] In summary, by placing the rotor 22 and the stator 21 in the rotor impeller space 13 and the stator space 14 respectively, and by filling the rotor impeller space 13 where the rotor 22 is located with cooling liquid, the rotor 22 can directly contact the cooling liquid, which effectively increases the heat dissipation efficiency of the rotor 22 and improves the heat dissipation efficiency of the water-cooled pump of this invention.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0032] 10: Outer shell 11: Divider cylinder 111: Body section 1111: Rotor Space 1112: Water-cooled opening 1113: Barrel body fitting part 1114: Pump Room 112: Extension 12: Impeller 13: Rotor impeller space 14: Stator Space 20: Motor assembly 21: Stator 211:Stator fitting part 22: Rotor 23: Shaft core 231: Rotor end 232: Impeller end 233: Connecting Channel 30: Shaft core fixing cover 31: Bearing bore 32: Circumferential wall 321: Bearing installation channel 33: Coolant hole 40: Sealing ring

Claims

1. A water-cooled pump comprising: a housing having: a partition cylinder disposed within the housing and dividing the internal space of the housing into a rotor impeller space and a stator space; the rotor impeller space and the stator space are not connected; at least one impeller rotatably disposed in the rotor impeller space; a motor assembly disposed within the housing and having: a stator disposed in the stator space and surrounding the partition cylinder; a rotor rotatably disposed in the rotor impeller space and located within the partition cylinder; the rotor being magnetically coupled to the stator and rotatable by the stator; and a shaft rotatably passing through the rotor and the at least one impeller, the shaft being rotated by the rotor and driving the at least one impeller to rotate.

2. The water-cooled pump as claimed in claim 1, wherein the water-cooled pump has a shaft retaining cover disposed in the rotor impeller space and located between the rotor and the at least one impeller, and dividing the rotor impeller space into a rotor space and a pump chamber; the rotor is disposed in the rotor space; the shaft retaining cover has a through bearing hole formed therethrough, and the shaft rotatably passes through the bearing hole of the shaft retaining cover.

3. The water-cooled pump as described in claim 2, wherein an annular wall protrudes from one side of the shaft core fixing cover, the annular wall defining a bearing mounting channel, the bearing hole of the shaft core fixing cover being one opening of the bearing mounting channel; the shaft core rotatably passes through the bearing mounting channel; the opposite ends of the shaft core are a rotor end and an impeller end, respectively, the rotor end being located in the rotor space.

4. The water-cooled pump as claimed in claim 2, wherein the spindle retainer has at least one coolant hole that penetrates both opposite sides of the spindle retainer and communicates with the rotor space and the pump chamber.

5. A water-cooled pump as described in any one of claims 1 to 4, wherein the shaft has a communicating channel extending through the shaft along its axial direction, and the communicating channel communicates with the rotor impeller space at one end near the rotor.

6. A water-cooled pump as described in any one of claims 1 to 4, wherein, The separator has a plurality of body fitting portions arranged around and spaced on an outer circumferential surface of the separator; the stator has a plurality of stator fitting portions arranged around and spaced on the separator, and each fitting into the body fitting portions of the separator.

7. The water-cooled pump as described in claim 6, wherein the cylinder fittings are elongated and extend axially along the shaft core.

8. The water-cooled pump as described in claim 1, wherein, The separator has: a body portion having: a rotor space in which the rotor is disposed; a water-cooling opening formed at one end of the body portion near the at least one impeller; and an extension portion disposed at one end of the body portion near the at least one impeller and extending radially outward along the body portion.

9. The water-cooled pump as described in claim 8, further comprising a sealing ring disposed sealably between the extension and the housing to prevent communication between the rotor impeller space and the stator space.

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