High-speed motor cooling structure for air suspension blower

Abstract

The utility model relates to a high-speed motor cooling structure for an air suspension blower, and belongs to the technical field of high-speed motor heat dissipation. An active air cooling structure is arranged in the high-speed motor, the active air cooling structure comprises an air inlet, a heat dissipation impeller, a cooling air duct and an air outlet, an impeller protection cover is arranged on the outer side of the right end cover, and the heat dissipation impeller is arranged between the right end cover and the impeller protection cover; the air inlet is formed in the right side of the impeller protection cover; cooling air channels are respectively arranged between the rotor and the stator and between the stator and the motor shell; the air outlets comprise the first air outlet and the second air outlet, a baffle ring is arranged between the motor shell and the stator, and the first air outlet and the second air outlet are formed in the motor shell and located on the two sides of the baffle ring. According to the high-speed motor with the novel air cooling structure, through the multi-channel heat dissipation design and the optimized air outlet layout, the heat dissipation efficiency is remarkably improved, and the stable operation of the motor under a high load is ensured.

Description

Technical Field

[0001] The utility model relates to a high-speed motor cooling structure for an air suspension blower, belonging to the technical field of high-speed motor heat dissipation. Background Art

[0002] The air suspension centrifugal blower adopts three core technologies: ultra-high-speed direct-connected motor, air suspension bearing and high-precision single-stage centrifugal impeller. It has the advantages of high efficiency, high performance, low noise and low energy consumption.

[0003] At present, the heat dissipation of air suspension centrifugal blowers is still an important issue. The commonly used heat dissipation methods are water cooling and air cooling. Water cooling has the advantages of high stability, low noise, and flexible temperature adjustment; but the equipment is more complex and occupies a large space. Air cooling has the advantages of low cost, easy installation, and convenient maintenance, but air cooling still has the problem of low heat dissipation efficiency, which affects the stable operation of high-speed motors. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model provides a high-speed motor cooling structure for an air suspension blower, which significantly improves the heat dissipation efficiency of the high-speed motor by optimizing the design of the heat dissipation impeller, cooling air duct and exhaust port, thereby ensuring the stable operation of the motor under high load.

[0005] The technical solution of the utility model is:

[0006] A high-speed motor cooling structure for an air suspension blower comprises a first volute, a fan impeller, a motor housing, a stator and a rotor.

[0007] The stator comprises a stator core and a stator winding wound on the stator core;

[0008] The left side of the motor housing is provided with a first volute, an axial bearing seat, a thrust plate, and a left end cover in sequence from outside to inside, and the fan impeller is installed between the axial bearing seat and the first volute; and the fan impeller is installed at the left end of the rotor and is coaxial with the rotor;

[0009] A right end cover is arranged on the right side of the motor housing;

[0010] The cooling structure is an active air-cooling cooling structure, which includes an air inlet, a heat dissipation impeller, a cooling air duct and an air outlet. An impeller protection cover is arranged on the outside of the right end cover, and the heat dissipation impeller is arranged between the right end cover and the impeller protection cover; the air inlet is arranged on the right side of the impeller protection cover; cooling air ducts are arranged between the rotor and the stator, and between the stator and the motor housing respectively;

[0011] The exhaust port comprises a first exhaust port and a second exhaust port, a baffle ring is arranged between the motor housing and the stator, the first exhaust port and the second exhaust port are opened on the motor housing, and the first exhaust port and the second exhaust port are located on both sides of the baffle ring.

[0012] Preferably, according to the utility model, the impeller protection cover is a drainage volute, and an air cover is arranged on the outer side of the impeller protection cover, and the outer end of the air cover is an air inlet.

[0013] According to the preferred embodiment of the utility model, a first ventilation hole is provided on the right end cover for guiding the cooling air discharged by the heat dissipation impeller to the inside of the motor housing; and the distance between the first ventilation hole and the central axis of the rotor is smaller than the outer diameter of the impeller protection cover. Such a design can transport the cooling air actively generated by the heat dissipation impeller to the inside of the motor, thereby better dissipating the heat inside the motor.

[0014] Preferably, according to the present invention, a fourth ventilation hole is further provided on the right end cover, and the fourth ventilation hole is located between the first ventilation hole and the rotor.

[0015] According to the preferred embodiment of the present invention, a first positioning ring and a second positioning ring are further provided at both ends of the stator core, the first positioning ring is provided with a second ventilation hole, and the second positioning ring is provided with a third ventilation hole. The first positioning ring and the second positioning ring can better ensure the concentricity of the stator and the rotor.

[0016] According to the preferred embodiment of the utility model, a third air outlet is provided at a position of the motor housing corresponding to the stator winding at the front end, and / or a fourth air outlet is provided at a position of the motor housing corresponding to the stator winding at the rear end. Providing the third and fourth air outlets can effectively improve the heat dissipation problem of the stator winding, and the third or fourth air outlets can be selectively provided according to the actual heat dissipation situation.

[0017] Preferably, the area of ​​the first air outlet / the second air outlet is larger than the area of ​​the third air outlet, and / or the area of ​​the first air outlet / the second air outlet is larger than the area of ​​the fourth air outlet. For high-speed motors, the stator and the rotor will generate a lot of heat. Such a design can make more cooling air flow between the rotor and the stator, and between the stator and the motor housing, to achieve comprehensive cooling of the stator and the rotor.

[0018] Preferably, according to the present utility model, an axial thrust air bearing is provided between the axial bearing seat and the thrust plate, and between the thrust plate and the left end cover.

[0019] Preferably, according to the present invention, radial air bearings are arranged between the left end cover and the rotor, and between the right end cover and the rotor.

[0020] According to the preferred embodiment of the utility model, a plurality of heat dissipation grooves are arranged on the outside of the motor housing, so as to increase the heat dissipation effect of the cooling air duct between the motor housing and the stator.

[0021] The beneficial effects of the utility model are:

[0022] The utility model provides a high-speed motor cooling structure for an air suspension blower, wherein an active air cooling structure is provided in the high-speed motor, a heat dissipation impeller is installed at one end of the rotor, the heat dissipation impeller rotates to inhale external cold air, the cooling air passes through the stator winding, the cooling air duct between the stator and the motor housing, or passes through the stator winding, the cooling air duct between the rotor and the stator, and the cooling air duct between the stator and the motor housing, and finally is discharged to the outside through the exhaust port, thereby ensuring the heat dissipation effect on the stator, the rotor and the radial air bearing. The design can reduce the intake temperature of the heat dissipation impeller and increase the cooling efficiency of the heat dissipation impeller on the high-speed motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model provides a schematic structural diagram of a high-speed motor cooling structure for an air suspension blower.

[0024] 1. Rotor, 2. Stator, 3. Motor housing, 4. Stator core, 5. Stator winding, 6. Air inlet, 7. First air outlet, 8. Second air outlet, 9. Third air outlet, 10. Fourth air outlet, 11. Heat dissipation impeller, 12. Second ventilation hole, 13. Third ventilation hole, 14. Impeller protection cover, 15. Heat dissipation groove, 16. Left end cover, 17. Right end cover, 18. Axial thrust air bearing, 19. Radial air bearing, 20. First ventilation hole, 21. First volute, 22. Fan impeller, 23. First positioning ring, 24. Second positioning ring, 25. Wind cover, 26. Axial bearing seat, 27. Retaining ring, 28. Thrust plate, 29. First cooling air duct, 30. Second cooling air duct, 31. Third cooling air duct, 32. Fourth ventilation hole. DETAILED DESCRIPTION

[0025] Several embodiments of the present application will be disclosed below with diagrams to clearly and completely describe the technical solution of the present utility model, which constitute a part of the specification of the present application. The drawings are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model and do not constitute an improper limitation on the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present utility model.

[0026] It should be noted that unless a direction is defined separately, the directions such as up, down, left, and right mentioned in this document are based on the embodiments of this application. Figure 1The directions of up, down, left, right, etc. shown in the figure shall prevail. If the specific posture changes, the directional indication will also change accordingly. The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in various embodiments of the present disclosure, the same or similar reference numerals represent the same or similar components.

[0027] In the present invention, unless otherwise specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body, unless otherwise specified. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] Example 1

[0030] This embodiment provides a high-speed motor cooling structure for an air suspension blower, such as Figure 1 As shown, it includes a first volute 21, a fan impeller 22, a motor housing 3, a stator 2 and a rotor 1.

[0031] The stator 2 includes a stator core 4 and a stator winding 5 wound on the stator core 4;

[0032] The left side of the motor housing 3 is provided with a first volute 21, an axial bearing seat 26, a thrust plate 28, and a left end cover 16 in sequence from outside to inside, and a fan impeller 22 is installed between the axial bearing seat 26 and the first volute 21; and the fan impeller 22 is installed at the left end of the rotor 1, coaxial with the rotor 1;

[0033] A right end cover 17 is provided on the right side of the motor housing 3;

[0034] The cooling structure is an active air-cooling cooling structure, which includes an air inlet 6, a heat dissipation impeller 11, a cooling air duct and an exhaust port. An impeller protection cover 14 is arranged on the outer side of the right end cover 17, and the heat dissipation impeller 11 is arranged between the right end cover 17 and the impeller protection cover 14; the air inlet 6 is arranged on the right side of the impeller protection cover 14; cooling air ducts are respectively arranged between the rotor 1 and the stator 2, and between the stator 2 and the motor housing 3;

[0035] The exhaust port includes a first exhaust port 7 and a second exhaust port 8 . A baffle ring 27 is provided between the motor housing 3 and the stator 2 . The first exhaust port 7 and the second exhaust port 8 are opened on the motor housing 3 , and the first exhaust port 7 and the second exhaust port 8 are located on both sides of the baffle ring 27 .

[0036] Example 2

[0037] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0038] The impeller protection cover 14 is a drainage volute, and a wind cover 25 is arranged on the outer side of the impeller protection cover 14 , and the outer end of the wind cover 25 is the air inlet 6 .

[0039] Example 3

[0040] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 or Embodiment 2 in that:

[0041] The right end cover 17 is provided with a first ventilation hole 20 for guiding the cooling air discharged from the heat dissipation impeller 11 to the inside of the motor housing 3; and the distance between the first ventilation hole 20 and the central axis of the rotor 1 is smaller than the outer diameter of the impeller protection cover 14. Such a design can transport the cooling air actively generated by the heat dissipation impeller 11 to the inside of the high-speed motor, so as to better dissipate the heat inside the high-speed motor.

[0042] Example 4

[0043] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 3 in that:

[0044] A fourth ventilation hole 32 is further provided on the right end cover 17 , and the fourth ventilation hole 32 is located between the first ventilation hole 20 and the rotor 1 .

[0045] Example 5

[0046] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0047] A retaining ring 27 is provided between the stator core 4 and the motor housing 3, and the retaining ring 27 is a closed structure; a first positioning ring 23 and a second positioning ring 24 are also provided at both ends of the stator core 4, and a second ventilation hole 12 is provided on the first positioning ring 23, and three to four ventilation holes can be selected, and a third ventilation hole 13 is provided on the second positioning ring 24, and three to four ventilation holes can also be selected. The first positioning ring 23 and the second positioning ring 24 can better ensure the concentricity of the stator 2 and the rotor 1.

[0048] Example 6

[0049] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0050] The motor housing 3 is provided with a third air outlet 9 at a position corresponding to the stator winding 5 at the front end, and / or the motor housing 3 is provided with a fourth air outlet 10 at a position corresponding to the stator winding 5 at the rear end. Providing the third air outlet 9 and the fourth air outlet 10 can effectively improve the heat dissipation problem of the stator winding 5, and the third air outlet 9 or the fourth air outlet 10 can be selectively provided according to the actual heat dissipation situation.

[0051] For high-power high-speed motors, the stator windings 5 ​​at both ends are also heated seriously. According to the power, the fourth exhaust vent 10, the third exhaust vent 9, or both the fourth exhaust vent 10 and the third exhaust vent 9 can be set. Figure 1 The direction of the arrow.

[0052] Example 7

[0053] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 6 in that:

[0054] The area of ​​the first air outlet 7 / the second air outlet 8 is larger than the area of ​​the third air outlet 9, and / or the area of ​​the first air outlet 7 / the second air outlet 8 is larger than the area of ​​the fourth air outlet 10. For a high-speed motor, the stator 2 and the rotor 1 will generate a lot of heat. Such a design can make more cooling air flow between the rotor 1 and the stator 2, and between the stator 2 and the motor housing 3, so as to achieve comprehensive cooling of the stator 2 and the rotor 1.

[0055] Example 8

[0056] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0057] Axial thrust air bearings 18 are provided between the axial bearing seat 26 and the thrust plate 28 , and between the thrust plate 28 and the left end cover 16 .

[0058] Example 9

[0059] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0060] Radial air bearings 19 are provided between the left end cover 16 and the rotor 1 , and between the right end cover 17 and the rotor 1 .

[0061] Example 10

[0062] A high-speed motor cooling structure for an air suspension blower, which differs from Embodiment 1 in that:

[0063] The motor housing 3 is provided with a plurality of heat dissipation grooves 15, which increase the heat dissipation effect of the cooling air duct between the motor housing 3 and the stator.

[0064] The path of cooling air in the air duct can be referred to Figure 1 The direction of the arrow, combined with Figure 1 It is explained that the working process of active air cooling of the motor is as follows: when the rotor 1 rotates, it drives the heat dissipation impeller 11 to rotate, and the external wind enters the air duct between the heat dissipation impeller 11 and the impeller protection cover 14 through the outer end of the wind cover 25, and enters the right side space of the high-speed motor through the first ventilation hole 20 on the right end cover 17, or the first ventilation hole 20 and the fourth ventilation hole 32.

[0065] In the right space, part of the cooling air passes through the third cooling air duct 31 between the stator and the motor housing 3 and the second air outlet 8 on the motor housing 3 and is discharged to the outside of the high-speed motor;

[0066] Alternatively, a portion of the cooling air is discharged to the outside of the high-speed motor through the fourth air outlet 10.

[0067] Another part of the cooling air passes through the first cooling air duct 29 between the stator and the rotor 1 and reaches the left side space of the motor.

[0068] In the left side space, part of the cooling air is discharged to the outside of the high-speed motor through the third exhaust port 9; the other part of the air passes through the second cooling air duct 30 between the stator and the motor housing 3, and is finally discharged to the outside of the high-speed motor through the first exhaust port 7.

[0069] The above description shows and describes the preferred implementation of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other implementations, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the object concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A high-speed motor cooling structure for an air suspension blower, characterized in that: It includes a first volute, a fan impeller, a motor housing, a stator and a rotor, wherein the stator includes a stator core and a stator winding wound on the stator core; the left side of the motor housing is provided with a first volute, an axial bearing seat, a thrust plate and a left end cover in sequence from outside to inside, and the fan impeller is installed between the axial bearing seat and the first volute; and the fan impeller is installed at the left end of the rotor and is coaxial with the rotor; a right end cover is provided on the right side of the motor housing; the cooling structure is an active air-cooled cooling structure, which includes an air inlet, a heat dissipation impeller, a cooling air duct and an air exhaust port, an impeller protection cover is provided on the outer side of the right end cover, and the heat dissipation impeller is provided between the right end cover and the impeller protection cover; the air inlet is provided on the right side of the impeller protection cover; cooling air ducts are provided between the rotor and the stator and between the stator and the motor housing respectively; the air exhaust port includes a first air exhaust port and a second air exhaust port, a baffle ring is provided between the motor housing and the stator, the first air exhaust port and the second air exhaust port are opened on the motor housing, and the first air exhaust port and the second air exhaust port are located on both sides of the baffle ring.

2. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: The impeller protection cover is a drainage volute, and a wind cover is arranged on the outer side of the impeller protection cover, and the outer end of the wind cover is an air inlet.

3. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: A first ventilation hole is provided on the right end cover for guiding the cooling air discharged from the heat dissipation impeller to the inside of the motor housing; and the distance from the first ventilation hole to the central axis of the rotor is smaller than the outer diameter of the impeller protective cover.

4. The high-speed motor cooling structure for an air suspension blower according to claim 3 is characterized in that: A fourth ventilation hole is also provided on the right end cover, and the fourth ventilation hole is located between the first ventilation hole and the rotor.

5. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: A first positioning ring and a second positioning ring are also provided at both ends of the stator core. A second ventilation hole is provided on the first positioning ring, and a third ventilation hole is provided on the second positioning ring.

6. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: A third air outlet is provided at a position of the motor housing corresponding to the stator winding at the front end, and / or a fourth air outlet is provided at a position of the motor housing corresponding to the stator winding at the rear end.

7. A high-speed motor cooling structure for an air suspension blower according to claim 6, characterized in that: The area of ​​the first air outlet / the second air outlet is greater than the area of ​​the third air outlet, and / or the area of ​​the first air outlet / the second air outlet is greater than the area of ​​the fourth air outlet.

8. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: Axial thrust air bearings are arranged between the axial bearing seat and the thrust plate, and between the thrust plate and the left end cover.

9. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: Radial air bearings are arranged between the left end cover and the rotor, and between the right end cover and the rotor.

10. The high-speed motor cooling structure for an air suspension blower according to claim 1, characterized in that: A number of heat dissipation grooves are arranged on the outside of the motor housing.

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