Water cooling structure of high-speed motor

Abstract

The utility model relates to a high speed motor water cooling structure, comprising a casing, a stator water jacket and a rotating shaft, two ends of the casing are respectively provided with a front bearing seat and a rear bearing seat, the casing is provided with a transverse water flow channel, and the front bearing seat and the rear bearing seat are respectively provided with a first cold water tank and a second cold water tank; and the transverse water flow channel, the first cold water tank and the second cold water tank are communicated with one another. The cooling water flow channels are arranged on the casing, the front bearing seat and the rear bearing seat, so that cooling water can quickly cool bearings at two ends of the motor, the cooling water jacket is matched with the casing to form the cooling cavity, the cooling water enters the cooling cavity to better cool the stator, the overall temperature of the motor is reduced through multiple cooling, and the service life of the motor is prolonged. The working condition requirements of the high-speed motor are met; a pre-tightening force is applied to the bearing through the bearing pre-tightening ring, so that gaps or looseness of an internal structure can be prevented; the whole structure is compact, the size is small, practicability is high, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric motors, in particular to a high-speed electric motor water cooling structure. Background Art

[0002] High-speed motors are widely used. Due to their high speeds, they generate significant heat during operation, affecting their performance and lifespan. Therefore, heat dissipation and cooling are essential.

[0003] Typically, motor heat dissipation and cooling are achieved by using built-in fans to force air flow to increase the heat exchange effect between the motor and the air. However, this method is not ideal for high-speed motor heat dissipation. Some high-speed motors also use water-cooled end covers (such as the high-speed motor water-cooled end cover disclosed in patent publication number CN 102957258A). By filling the motor end cover with water, this can achieve the purpose of reducing the local operating temperature of the motor, but the overall cooling effect on the high-speed motor is not ideal. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a high-speed motor water-cooling structure, which can cool the front section, tail end bearing and stator part of the high-speed motor to reduce the overall temperature.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A high-speed motor water cooling structure, comprising:

[0007] A casing, wherein a front bearing seat is provided at one end of the casing, a rear bearing seat is provided at the other end of the casing, a transverse water flow channel is provided on the side wall of the casing, and a water cooling channel is provided at one end of the casing; a first cold water trough is provided on one side of the front bearing seat, and a first ring cover for closing the first cold water trough is provided on the front bearing seat; a circulating water channel connecting the first cold water trough and the water cooling channel is provided on the front bearing seat; a water injection hole connected to the first cold water trough is provided on the outer edge of the front bearing seat, and one side of the water injection hole is connected to the transverse water flow channel via the first connecting channel; a second cold water trough is provided on one side of the rear bearing seat, and a second ring cover for closing the second cold water trough is provided on the rear bearing seat; the second cold water trough is connected to the transverse water flow channel via the second connecting channel;

[0008] Stator water jacket: a stator water jacket is provided inside the casing, and a stator is provided inside the stator water jacket; sealing rings are provided at both ends of the stator water jacket, and the stator water jacket, the sealing rings and the inner wall of the casing cooperate to form a cooling cavity, which is connected to the water cooling channel;

[0009] The rotating shaft has two ends connected to the front bearing seat and the rear bearing seat by means of a first bearing and a second bearing respectively, and a rotor capable of cooperating with the stator is sleeved on the outer side of the middle part of the rotating shaft.

[0010] Furthermore, the two sides of the first bearing are fixed by using a shaft shoulder and a bearing end cover respectively, and a first locking nut for fixing the bearing end cover is screwed on the shaft.

[0011] Furthermore, both sides of the second bearing are fixed by a rotor balancing sleeve and a spacer ring respectively, and a second locking nut for fixing the spacer ring is threaded on the rotating shaft.

[0012] Furthermore, a bearing preload ring is provided on one side of the second bearing, and the bearing preload ring is fixed by a bearing cover, and the bearing cover is installed on the rear bearing seat by bolt connection.

[0013] Furthermore, support feet are provided in parallel on the outer side of the housing.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The utility model provides cooling water flow channels on the casing, the front bearing seat and the rear bearing seat, so that the cooling water can quickly cool the bearings at both ends of the motor, and a cooling cavity is formed by the cooperation of the cooling water jacket and the casing. The cooling water entering the cooling cavity can better cool the stator. The multiple cooling methods reduce the overall temperature of the motor and meet the working conditions of the high-speed motor. A pre-tightening force is applied to the bearing through the bearing pre-tightening ring to prevent gaps or loosening of the internal structure. The overall structure is compact, small in size, highly practical and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 2 Schematic diagram of the external outline of the utility model;

[0018] Figure 3 This is a schematic diagram of the rotating shaft structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating shaft of the present utility model.

[0020] In the figure: 1. casing; 2. front bearing seat; 3. rear bearing seat; 4. transverse water flow channel; 5. water cooling channel; 6. first cold water trough; 7. first ring cover; 8. water injection hole; 9. first connecting channel; 10. second cold water trough; 11. second ring cover; 12. second connecting channel; 13. stator water jacket; 14; stator; 15. sealing ring; 16. cooling chamber; 17. first bearing; 18. second bearing; 19. rotor; 20. rear cover; 21. water outlet hole; 22. shaft shoulder; 23. bearing end cover; 24. first locking nut; 25. balancing sleeve; 26. spacer ring; 27. second locking nut; 28. bearing preload ring; 29. ​​bearing pressure cover; 30. shaft; 31. circulating water channel; 32. support pad. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] This embodiment provides a high-speed motor water-cooling structure, including a housing 1, a stator water jacket 13, a rotating shaft 30, and a rear cover 20. The housing 1 provides support for various components while also protecting the interior.

[0023] like Figures 1-4 As shown, a front bearing seat 2 is provided at one end of the casing 1, a rear bearing seat 3 is provided at the other end of the casing 1, a transverse water flow channel 4 is provided on the side wall of the casing 1, and a water cooling channel 5 is provided at one end of the casing 1; the transverse water flow channel 4 allows water to pass through the casing 1 laterally;

[0024] A first cold water tank 6 is provided on one side of the front bearing seat 2. A first ring cover 7 for closing the first cold water tank 6 is provided on the front bearing seat 2. The first ring cover 7 prevents the water in the first cold water tank 6 from flowing out and entering the interior of the motor.

[0025] A circulating water channel 31 is provided on the front bearing seat 2, connecting the first cold water tank 6 and the water cooling channel 5;

[0026] A water injection hole 8 connected to the first cold water tank 6 is opened on the outer edge of the front bearing seat 2. One side of the water injection hole 8 is connected to the transverse water flow channel 4 through the first connecting channel 9. Cooling water can enter the first cold water tank 6 through the water injection hole 8 and can also enter the transverse water flow channel 4 through the first connecting channel 9.

[0027] A second cold water tank 10 is provided on one side of the rear bearing seat 3. A second ring cover 11 is provided on the rear bearing seat 3 for closing the second cold water tank 10. The second ring cover 11 prevents the water in the second cold water tank 10 from flowing out and entering the interior of the motor.

[0028] The second cold water tank 10 is connected to the transverse water flow channel 4 via the second connecting channel 12, and the cooling water in the transverse water flow channel 4 can enter the second cold water tank 10 through the second connecting channel 12;

[0029] A stator water jacket 13 is provided inside the housing 1, and a stator 14 is provided inside the stator water jacket 13;

[0030] Sealing rings 15 are provided at both ends of the stator water jacket 13. The stator water jacket 13, the sealing rings 15 and the inner wall of the casing 1 cooperate to form a cooling cavity 16. The cooling cavity 16 is connected to the water cooling channel 5. The water in the first cold water tank 6 can enter the cooling cavity 16 through the circulating water channel 31 and the water cooling channel 5.

[0031] The two ends of the rotating shaft 30 are connected to the front bearing seat 2 and the rear bearing seat 3 by means of a first bearing 17 and a second bearing 18 respectively. The bearings 17 and the second bearing 18 enable the rotating shaft 30 to rotate in the front bearing seat 2 and the rear bearing seat 3;

[0032] The rotor 19 is mounted on the outer side of the middle portion of the rotating shaft 30 and is adapted to cooperate with the stator 14.

[0033] The rear cover 20 is fixedly connected to the rear bearing seat 3 by bolts. A water outlet 21 connected to the second connecting channel 12 is opened on the rear cover 20. After the cooling water cools the motor, it can be discharged through the water outlet 21.

[0034] Furthermore, the two sides of the first bearing 17 are fixed by using a shaft shoulder 22 and a bearing end cover 23 respectively, and a first locking nut 24 for fixing the bearing end cover 23 is screwed on the shaft.

[0035] Furthermore, the two sides of the second bearing 18 are fixed by a balancing sleeve 25 and a spacer ring 26 of the rotor 19 respectively, and a second locking nut 27 for fixing the spacer ring 26 is screwed on the rotating shaft.

[0036] Furthermore, a bearing preload ring 28 is provided on one side of the second bearing 18. The bearing preload ring 28 can apply a preload force to the second bearing 18 to prevent gaps or looseness in the internal structure.

[0037] The bearing preload ring 28 is fixed by a bearing cover 29 , and the bearing cover 29 is mounted on the rear bearing seat 3 by bolt connection.

[0038] Furthermore, support feet 31 are provided parallel to the outer side of the housing 1 .

[0039] Working principle: When the utility model is in use, cooling water is injected into the first cold water tank 6 on the front bearing seat 2 through the water injection hole 8. The cooling water in the first cold water tank 6 can cool the first bearing 17;

[0040] After the cooling water fills the first cold water tank 6, a part of the cooling water can enter the cooling chamber 16 through the circulating water channel 31 and the water-cooling channel 5, and the cooling water in the cooling chamber 16 can cool the stator 14; another part of the cooling water can enter the transverse water flow channel 4 through the first connecting channel 9, and then flow through the second connecting channel 12 into the second cold water tank 10, and the cooling water in the second cold water tank 10 can cool the second bearing 18; thereby achieving an efficient cooling effect on the first bearing 17, the second bearing 18 and the stator 14 of the motor, reducing the temperature of the high-temperature parts of the motor, and achieving an overall cooling effect.

[0041] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A high-speed motor water cooling structure, characterized in that: include: A casing, wherein a front bearing seat is provided at one end of the casing, a rear bearing seat is provided at the other end of the casing, a transverse water flow channel is provided on the side wall of the casing, and a water cooling channel is provided at one end of the casing; a first cold water trough is provided on one side of the front bearing seat, and a first ring cover for closing the first cold water trough is provided on the front bearing seat; a circulating water channel connecting the first cold water trough and the water cooling channel is provided on the front bearing seat; a water injection hole connected to the first cold water trough is provided on the outer edge of the front bearing seat, and one side of the water injection hole is connected to the transverse water flow channel via the first connecting channel; a second cold water trough is provided on one side of the rear bearing seat, and a second ring cover for closing the second cold water trough is provided on the rear bearing seat; the second cold water trough is connected to the transverse water flow channel via the second connecting channel; Stator water jacket: a stator water jacket is provided inside the casing, and a stator is provided inside the stator water jacket; sealing rings are provided at both ends of the stator water jacket, and the stator water jacket, the sealing rings and the inner wall of the casing cooperate to form a cooling cavity, which is connected to the water cooling channel; The rotating shaft has two ends connected to the front bearing seat and the rear bearing seat by means of a first bearing and a second bearing respectively, and a rotor capable of cooperating with the stator is sleeved on the outer side of the middle part of the rotating shaft.

2. A high-speed motor water cooling structure according to claim 1, characterized in that: The two sides of the first bearing are fixed by using the shaft shoulder and the bearing end cover respectively, and the first locking nut for fixing the bearing end cover is screwed on the shaft.

3. The high-speed motor water cooling structure according to claim 1, characterized in that: The two sides of the second bearing are fixed by a rotor balancing sleeve and a spacer ring respectively, and a second locking nut for fixing the spacer ring is screwed on the rotating shaft.

4. A high-speed motor water cooling structure according to claim 1, characterized in that: A bearing preload ring is provided on one side of the second bearing. The bearing preload ring is fixed by a bearing cover, and the bearing cover is installed on the rear bearing seat by bolt connection.

5. The high-speed motor water cooling structure according to claim 1, characterized in that: Support feet are arranged parallel to the outer side of the casing.

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