Liquid cooling water pump

Abstract

The utility model discloses a liquid cooling water pump which comprises a motor shell and a water pump shell, a motor is arranged in the motor shell, the motor shell and the water pump shell are connected through a fixing ring, the fixing ring limits the motor shell and the water pump shell in the axial direction and the radial direction, and a main cavity for cooling liquid to flow is formed in the motor shell and the water pump shell. And an impeller connected to an output shaft of the motor is arranged in the main cavity. According to the liquid cooling water pump, the installation size can be reduced, the assembly structure is stable and firm, the installation space of the water pump is saved, and the water pump is suitable for assembly in a small space.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a liquid-cooled water pump for data center servers, and more particularly to a fixing structure for the pump housing and motor housing of a liquid-cooled water pump. Background Technology

[0002] With the rapid development of cloud computing and big data technologies, data centers have become crucial facilities for enterprises and organizations to manage and store information. However, as data centers continue to expand in scale, issues such as energy consumption and heat dissipation are becoming increasingly prominent, becoming one of the bottlenecks restricting their development. Data center servers consume a large amount of electricity and generate significant heat during operation. To ensure the reliable operation of components and their longest possible lifespan, this heat must be dissipated promptly. This necessitates the use of an efficient and reliable cooling system to guarantee the normal operation of the servers. One effective cooling method is liquid cooling technology, with water pumps being its core component.

[0003] Compared to traditional air cooling, liquid-cooled water pumps offer higher cooling efficiency, effectively reducing server temperature, energy consumption, and carbon emissions, thereby improving the server's energy efficiency ratio. Furthermore, liquid-cooled water pumps can reduce noise and vibration, enhancing the reliability and security of data centers.

[0004] Currently, the pump housing and motor housing are fixed together using screws. To ensure the strength of the screw holes without increasing the volume of the motor housing, the screw holes on both the pump and motor housings are typically positioned radially beyond their outer diameters. However, this protrusion increases the overall circumferential volume of the pump. Since the installation space for pumps in data center server liquid cooling systems is limited, the existing method of fixing the pump and motor housings is no longer sufficient to meet the installation space requirements of the entire pump unit. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to solve the technical problem that the liquid-cooled water pump with excessive volume in the prior art cannot be installed in a small space, this utility model provides a liquid-cooled water pump that can reduce the installation volume, has a stable and firm assembly structure, saves the installation space of the water pump, and is suitable for assembly in a small space.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a liquid-cooled water pump, including a motor housing and a water pump housing, wherein an output shaft is provided inside the motor housing, and the motor housing and the water pump housing are connected by a fixing ring, wherein the fixing ring limits the axial and radial directions of the motor housing and the water pump housing, and a main cavity for the flow of coolant is formed inside the motor housing and the water pump housing, wherein an impeller connected to the output shaft is provided inside the main cavity.

[0007] This utility model of liquid-cooled water pump uses a retaining ring to connect and position the motor housing and the water pump housing in the axial and radial directions, simplifying the assembly structure, saving installation space, and reducing assembly difficulty.

[0008] Furthermore, in order to ensure that there is no relative movement between the fixing ring and the motor housing and the water pump housing, the fixing ring includes a ring body, the two ends of which have an inwardly extending first fold and a second fold. The inner wall of the ring body is fitted with the outer circumference of the motor housing and the water pump housing, the first fold is fitted with the end face of the water pump housing, and the second fold is fitted with the end face of the motor housing.

[0009] Furthermore, to prevent the fixing ring from shifting radially, the end face of the motor housing has a positioning protrusion, and the second folded edge has a positioning hole. The second folded edge fits against the end face of the motor housing so that the positioning protrusion is inserted into the positioning hole.

[0010] Furthermore, in order to achieve a mating connection between the motor housing, the water pump housing, and the front cover, the motor housing has a boss structure that protrudes radially outward. The boss structure has a first step surface and a second step surface. The front cover is provided between the first step surface and the water pump housing. The positioning protrusion is located on the second step surface. The outer periphery of the front cover is in contact with the inner wall of the ring body.

[0011] Furthermore, the positioning protrusion and the positioning hole are in a clearance fit.

[0012] Furthermore, to prevent liquid from flowing into the motor housing from the main cavity, a sealing ring is provided between the front cover and the motor housing and the water pump housing.

[0013] Furthermore, in order to ensure that the first folded edge fits tightly against the pump housing, the pump housing has a stepped structure, and the second folded edge fits onto the stepped structure.

[0014] Furthermore, in order to assemble the rotor, stator and output shaft, a shielding sleeve is connected inside the motor housing. An inner mounting cavity and an outer mounting cavity are formed between the shielding sleeve and the motor housing. The stator is installed in the outer mounting cavity, and the rotor is provided in the inner mounting cavity. The rotor is connected to the output shaft, and the output shaft passes through the inner mounting cavity and extends into the main cavity.

[0015] Furthermore, in order to simplify the structure and enhance the overall stability, the motor housing and the shielding sleeve are integrally injection molded.

[0016] Furthermore, a rear end cover is connected to the rear end of the motor housing, and the rear end cover is sealed to the motor housing.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model of liquid-cooled water pump uses a fixing ring to connect and position the motor housing and the water pump housing, eliminating the need for the existing screw installation structure. This reduces the size of the liquid-cooled water pump, making it suitable for installation and use in scenarios with limited installation space. The assembly structure is simple and the reliability is high.

[0019] 2. In this utility model of liquid-cooled water pump, the motor housing cooperates with the positioning protrusion and the positioning hole of the fixed ring to radially limit the fixed ring, so that there is no relative movement between the fixed ring and the motor housing, thus ensuring the stable connection between the fixed ring, the motor housing and the water pump housing.

[0020] 3. The liquid-cooled water pump of this utility model integrates the shielding sleeve and the motor housing through injection molding, which simplifies the overall structure and enhances the structural strength of the motor housing, thus ensuring the stability of the overall structure. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of the liquid-cooled water pump of this utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the fixing ring;

[0024] Figure 3 This is a three-dimensional structural diagram of the motor housing;

[0025] Figure 4 This is a cross-sectional view of the motor housing;

[0026] Figure 5 This is a three-dimensional structural diagram of a liquid-cooled water pump;

[0027] In the diagram: 1. Motor housing; 11. Positioning protrusion; 12. Boss structure; 121. First step surface; 122. Second step surface; 2. Pump housing; 21. Main cavity; 22. Impeller; 3. Rear end cover; 4. Front end cover; 5. Shielding sleeve; 51. Inner mounting cavity; 52. Outer mounting cavity; 53. Stator; 54. Rotor; 55. Output shaft; 6. Fixing ring; 61. Ring body; 62. First folded edge; 63. Second folded edge; 64. Positioning hole. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1, as Figure 1 As shown, a liquid-cooled water pump includes a motor housing 1 and a water pump housing 2. A rear end cover 3 is connected to the rear end of the motor housing 1, and the rear end cover 3 is sealed to the motor housing 1. A front end cover 4 is connected between the motor housing 1 and the water pump housing 2, and a sealing ring is provided between the front end cover 4 and the motor housing 1 and the water pump housing 2. The front end cover 4 on the motor housing 1 and the interior of the water pump housing 2 form a main cavity 21 for the flow of coolant, and an impeller 22 connected to the output shaft is provided in the main cavity 21.

[0032] Specifically, a shielding sleeve 5 is connected inside the motor housing 1. An inner mounting cavity 51 and an outer mounting cavity 52 are formed between the shielding sleeve 5 and the motor housing 1. A stator 53 is installed in the outer mounting cavity 52. ​​A rotor 54 is provided in the inner mounting cavity 51. An output shaft 55 is connected to the rotor 54. The output shaft 55 passes through the inner mounting cavity 51 and extends into the main cavity 21.

[0033] When the liquid-cooled water pump is working, the output shaft drives the impeller 22 to rotate, and the cooling medium enters from the inlet on the pump casing 2 and flows out from the outlet under the action of the impeller 22.

[0034] Specifically, the motor housing 1 and the water pump housing 2 are connected by a retaining ring 6. The retaining ring 6 limits the axial and radial movement of the motor housing 1 and the water pump housing 2.

[0035] Preferably, the fixing ring 6 includes a ring body 61. The ring body 61 has inwardly extending first flanges 62 and second flanges 63 at both ends. The inner wall of the ring body 61 fits against the outer circumference of the motor housing 1 and the water pump housing 2, the first flange 62 fits against the end face of the water pump housing 2, and the second flange 63 fits against the end face of the motor housing 1. The first flange 62 and the second flange 63 limit the two sides of the motor housing 1 and the water pump housing 2, achieving axial positioning of the motor housing 1 and the water pump housing 2. The inner wall of the ring body 61 limits the outer circumference of the motor housing 1 and the water pump housing 2, achieving radial limiting of the motor housing 1 and the water pump housing 2. In this embodiment, the assembly between the motor housing 1 and the water pump housing 2 can be achieved using only the fixing ring 6, eliminating the need for additional screw connections, simplifying the assembly structure, and reducing the volume of the liquid-cooled water pump, allowing the liquid-cooled water pump to be assembled and used in a small space.

[0036] Before assembly, the retaining ring 6 is a cylindrical structure. After the retaining ring 6 is sleeved on the outside of the motor housing 1 and the water pump housing 2, the retaining ring 6 is bent on the retaining ring by a tool to form the first folded edge 62 and the second folded edge 63, thereby realizing the assembly between the retaining ring and the motor housing 1 and the water pump housing 2.

[0037] In Example 2, based on Example 1, the motor housing 1 has a positioning protrusion 11 on its end face, and a positioning hole 64 on its second folded edge 63. The second folded edge 63 fits against the end face of the motor housing 1 so that the positioning protrusion 11 is inserted into the positioning hole 64. The positioning protrusion 11 and the positioning hole 64 cooperate between the motor housing 1 and the second folded edge 63 to position the fixing ring 6, preventing the fixing ring 6 from shifting radially and ensuring a stable connection between the motor housing 1 and the water pump housing 2.

[0038] In Example 3, based on Example 2, the motor housing 1 has a boss structure 12 that protrudes radially outward. The boss structure 12 has a first stepped surface 121 and a second stepped surface 122. A front end cover 4 is provided between the first stepped surface 121 and the water pump housing 2, and a positioning protrusion 11 is located on the second stepped surface 122. The outer periphery of the front end cover 4 is fitted with the inner wall of the ring body 61. The first stepped surface 121 is fitted with the end face of the first folded edge 62 to ensure the assembly accuracy of the motor housing 1 and the fixing ring 6. The second stepped surface 122 is fitted with the front end cover 4 to cooperate with the water pump housing 2 to achieve the positioning and assembly of the front end cover 4.

[0039] Specifically, the pump housing 2 has a stepped structure, and the second folded edge 63 is attached to the stepped structure. By utilizing the stepped structure and the second folded edge 63, the assembly accuracy between the pump housing 2 and the fixing ring 6 is ensured.

[0040] In Example 4, based on Example 1, if the existing separate structure of motor housing 1 and shielding sleeve 5 is used, a sealing structure between motor housing 1 and front end cover 4 needs to be added, and the assembly process is more complex. Directly using integral injection molding of motor housing 1 and shielding sleeve 5 results in a simpler structure and enhances the overall structural stability.

[0041] In summary, this utility model of liquid-cooled water pump can reduce the installation volume, has a stable and robust assembly structure, saves installation space, and is suitable for assembly in small spaces.

[0042] The above description is based on the preferred embodiments of this utility model. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A liquid-cooled water pump, comprising a motor housing (1) and a pump housing (2), wherein an output shaft is provided inside the motor housing (1), characterized in that, The motor housing (1) and the water pump housing (2) are connected by a retaining ring (6). The retaining ring (6) limits the axial and radial movement of the motor housing (1) and the water pump housing (2). The interior of the motor housing (1) and the water pump housing (2) forms a main cavity (21) for the flow of coolant. An impeller (22) connected to the output shaft (55) is provided in the main cavity (21).

2. The liquid-cooled water pump according to claim 1, characterized in that, The fixing ring (6) includes a ring body (61), the two ends of which have an inwardly extending first fold (62) and second fold (63). The inner wall of the ring body (61) is fitted with the outer circumference of the motor housing (1) and the water pump housing (2). The first fold (62) is fitted with the end face of the water pump housing (2), and the second fold (63) is fitted with the end face of the motor housing (1).

3. The liquid-cooled water pump according to claim 2, characterized in that, The motor housing (1) has a positioning protrusion (11) on its end face and a positioning hole (64) on its second folded edge (63). The second folded edge (63) fits against the end face of the motor housing (1) so that the positioning protrusion (11) is inserted into the positioning hole (64).

4. The liquid-cooled water pump according to claim 3, characterized in that, The motor housing (1) has a boss structure (12) that protrudes radially outward. The boss structure (12) has a first step surface (121) and a second step surface (122). A front end cover (4) is provided between the first step surface (121) and the water pump housing (2). The positioning protrusion (11) is located on the second step surface (122). The outer periphery of the front end cover (4) is in contact with the inner wall of the ring body (61).

5. The liquid-cooled water pump according to claim 4, characterized in that, The positioning protrusion (11) and the positioning hole (64) are in clearance fit.

6. The liquid-cooled water pump according to claim 5, characterized in that, A sealing ring is provided between the front cover (4) and the motor housing (1) and the water pump housing (2).

7. The liquid-cooled water pump according to any one of claims 2-6, characterized in that, The pump housing (2) has a stepped structure, and the second folded edge (63) is attached to the stepped structure.

8. The liquid-cooled water pump according to claim 1, characterized in that, A shielding sleeve (5) is connected inside the motor housing (1). An inner mounting cavity (51) and an outer mounting cavity (52) are formed between the shielding sleeve (5) and the motor housing (1). A stator (53) is installed in the outer mounting cavity (52). A rotor (54) is provided in the inner mounting cavity (51). The rotor (54) is connected to the output shaft (55). The output shaft (55) passes through the inner mounting cavity (51) and extends into the main cavity (21).

9. The liquid-cooled water pump according to claim 8, characterized in that, The motor housing (1) and the shielding sleeve (5) are integrally injection molded.

10. The liquid-cooled water pump according to claim 1, characterized in that, The rear end of the motor housing (1) is connected to a rear end cover (3), and the rear end cover (3) is sealed to the motor housing (1).

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