Two-stage air suspension compressor

Abstract

The utility model relates to a two-stage air suspension compressor which comprises a machine shell, a stator, a rotor assembly, a volute assembly and a cooling assembly. The rotor assembly is rotationally connected to the machine shell. The volute assembly comprises a first volute and a second volute, and the first volute and the second volute are arranged at the two ends of the machine shell in a covering mode respectively. The cooling assembly comprises a first air pipe, a second air pipe and a cooler, one end of the first air pipe communicates with the exhaust end of the first volute, the other end of the first air pipe communicates with the cooler, and one end of the second air pipe communicates with the air inlet end of the second volute. According to the two-stage air suspension compressor, the first air pipe is communicated with the exhaust end of the first volute, the other end of the first air pipe is communicated with the cooler, one end of the second air pipe is communicated with the air inlet end of the second volute, the other end of the second air pipe is communicated with the cooler, and compressed air exhausted through the first volute is cooled through the cooler and then exhausted through the second volute, so that the temperature of the compressed air is reduced; and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to a two-stage air suspension compressor. Background Art

[0002] An air suspension compressor is a device used to compress gas. When the system requires multiple pressure conditions, multiple air suspension compressors are needed. However, if the number of air suspension compressors is large, the installation and maintenance workload is large, and the operation is complex. Therefore, a two-stage centrifuge appears on the market to cope with the above conditions.

[0003] For example, the Chinese utility model patent application (publication number CN208417019U, publication date: January 22, 2019) discloses a high-speed two-stage centrifugal blower based on air dynamic pressure bearings, including a motor; a two-stage volute, which includes a first-stage volute and a second-stage volute. The first-stage volute is installed on one side of the motor, and the second-stage volute is installed on the other end of the motor. The exhaust port of the first-stage volute is connected to the intake port of the second-stage volute through a pipeline; the first-stage impeller in the first-stage volute is fixedly connected to the rotor in the motor, and the second-stage impeller in the second-stage volute is fixedly connected to the rotor in the motor; however, the compressed air coming out of the first-stage volute has a high temperature, and then flows into the second-stage volute for compression. The temperature of the compressed air coming out of the second-stage compression is relatively high, which is easy to damage the equipment and affect the service life of the equipment. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a two-stage air suspension compressor with a long service life in view of the above problems.

[0005] A two-stage air suspension compressor includes a housing, a stator, a rotor assembly, a volute assembly and a cooling component. The stator is installed in the housing; the rotor assembly is rotatably connected to the housing; the volute assembly includes a first volute and a second volute, and the first volute and the second volute respectively cover both ends of the housing; the cooling component includes a first air pipe, a second air pipe and a cooler. One end of the first air pipe communicates with the exhaust end of the first volute, and the other end communicates with the cooler. One end of the second air pipe communicates with the intake end of the second volute, and the other end communicates with the cooler.

[0006] In one embodiment, the cooler includes a housing and a partition. The partition divides the housing into an air chamber and a water chamber, and the water chamber is used to accommodate cooling water; the cooling component further includes a water inlet pipe, a drain pipe and a cooling machine. One end of the water inlet pipe communicates with the cooling machine, and the other end communicates with the water chamber; one end of the drain pipe communicates with the water chamber, and the other end communicates with the cooling machine.

[0007] In one embodiment, the casing includes a housing, a support, a vertical frame, and shock pads. The support is mounted on a support object. One end of the vertical frame is connected to the housing, and the other end is connected to the shock pad. The shock pad is mounted on the support. Both the vertical frame and the shock pads are multiple in number and are in one-to-one correspondence.

[0008] In one embodiment, the rotor assembly includes a rotating shaft, a first impeller, and a second impeller. The rotating shaft is rotatably connected to the casing. The rotating shaft passes through the stator, and an air duct is formed between the rotating shaft and the stator. The first impeller and the second impeller are respectively mounted at both ends of the rotating shaft. The first volute covers the first impeller, and the second volute covers the second impeller.

[0009] In one embodiment, the casing is further provided with a plurality of air inlet holes and a plurality of ventilation holes. Each of the air inlet holes is arranged along the circumferential direction of the casing. The ventilation holes and the air inlet holes are respectively arranged at both ends of the casing. Each of the ventilation holes is arranged along the circumferential direction of the casing, and each of the ventilation holes communicates with the air duct.

[0010] In one embodiment, the rotor assembly further includes a support seat, a bearing, a thrust disc, a first thrust bearing, and a second thrust bearing. The support seat is sleeved on one end of the rotating shaft, and the bearing is sleeved on the support seat. The thrust disc is sleeved on the support seat, and the thrust disc is arranged between the first thrust bearing and the second thrust bearing. The first impeller is sleeved on the support seat, and one end of the first impeller abuts against one end of the thrust disc.

[0011] In one embodiment, the volute assembly further includes a fixing plate and a shield. The fixing plate is mounted on one end of the casing, one end of the shield is connected to the fixing plate, and the other end is connected to the first volute.

[0012] In one embodiment, a heat dissipation assembly is further included. The heat dissipation assembly includes a heat dissipation cover, a cover plate, and a heat dissipation wheel. The heat dissipation cover is provided with an air outlet, and the heat dissipation cover covers one end of the casing. One end of the cover plate is connected to the heat dissipation cover, and the other end is connected to the second volute. The heat dissipation wheel is mounted at one end of the rotating shaft close to the second impeller, and the heat dissipation wheel is accommodated in the accommodation cavity surrounded by the heat dissipation cover and the cover plate.

[0013] In one embodiment, the heat dissipation assembly further includes a heat dissipation plate and a heat dissipation cover. One end of the heat dissipation plate is connected to the heat dissipation cover, and the other end is connected to the heat dissipation cover. The heat dissipation plate is provided with a plurality of through holes. Each of the through holes is arranged along the peripheral edge of the heat dissipation plate, and the through holes communicate with the air duct. The heat dissipation wheel is accommodated in the space surrounded by the heat dissipation cover and the cover plate.

[0014] In one embodiment, the heat dissipation component further includes a heat conducting member, which includes a base portion, a fin portion, and a partition portion. The base portion abuts against the outer side of the stator; there are a plurality of fin portions, and the fin portions are arranged at intervals along the circumference of the base portion. One end of each fin portion abuts against the inner side of the casing; a heat dissipation groove is formed between two adjacent fin portions, and the heat dissipation groove communicates with the air inlet hole; one end of the partition portion abuts against one end of the base portion, and the other end abuts against the inner side of the casing.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The two-stage air suspension compressor of the present utility model is connected to the exhaust end of the first volute through a first air pipe, and the other end is connected to a cooler. One end of the second air pipe is connected to the intake end of the second volute, and the other end is connected to the cooler. The compressed gas discharged from the first volute is cooled by the cooler and then discharged from the second volute, thereby reducing the temperature of the compressed gas and extending the service life of the equipment. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a two-stage air suspension compressor shown in an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a cross-sectional view of the shown two-stage air suspension compressor, in which the temperature reduction component is not shown;

[0019] Figure 3 is Figure 2 an enlarged view of circle A in

[0020] Figure 4 is Figure 2 an enlarged view of circle B in

[0021] Figure 5 is Figure 1 a schematic structural diagram of the heat conducting member in the shown two-stage air suspension compressor.

[0022] The meanings of the reference numerals in the drawings are as follows:

[0023] 100, two-stage air suspension compressor;

[0024] 10. Housing; 101. Air inlet hole; 102. Ventilation hole; 11. Shell; 12. Support; 13. Upright frame; 14. Shock pad; 20. Stator; 30. Rotor assembly; 31. Rotating shaft; 310. Air duct; 32. First impeller; 33. Second impeller; 34. Support seat; 35. Bearing; 36. Thrust disc; 37. First thrust bearing; 38. Second thrust bearing; 40. Volute assembly; 41. First volute; 410. Air inlet; 411. Exhaust end; 42. Second volute; 421. Air inlet end; 422. Exhaust port; 43. Fixed plate; 44. Protective cover;

[0025] 50. Cooling component; 51. First air pipe; 52. Second air pipe; 53. Cooler; 54. Water inlet pipe; 55. Drain pipe; 60. Heat dissipation component; 61. Heat dissipation cover; 610. Air outlet; 62. Cover plate; 63. Heat dissipation wheel; 64. Heat dissipation plate; 640. Through hole; 65. Heat dissipation cover; 66. Heat conducting member; 661. Base portion; 662. Fin portion; 663. Partition portion. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] In the description of the present 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", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0032] Please refer to Figures 1 to 5, a two-stage air suspension compressor 100 according to an embodiment of the utility model, includes a housing 10, a stator 20, a rotor assembly 30, a volute assembly 40 and a cooling assembly 50. The stator 20 is installed inside the housing 10; the rotor assembly 30 is rotatably connected to the housing 10; the volute assembly 40 includes a first volute 41 and a second volute 42, and the first volute 41 and the second volute 42 are respectively covered at both ends of the housing 10; the cooling assembly 50 includes a first air pipe 51, a second air pipe 52 and a cooler 53. One end of the first air pipe 51 communicates with the exhaust end 411 of the first volute 41, and the other end communicates with the cooler 53. One end of the second air pipe 52 communicates with the intake end 421 of the second volute 42, and the other end communicates with the cooler 53. In this two-stage air suspension compressor 100, the first air pipe 51 communicates with the exhaust end 411 of the first volute 41, and the other end communicates with the cooler 53. One end of the second air pipe 63 communicates with the intake end 421 of the second volute 42, and the other end communicates with the cooler 53. The compressed gas discharged from the first volute 41 is cooled by the cooler 53 and then discharged from the second volute 42, thereby reducing the temperature of the compressed gas and extending the service life of the equipment.

[0033] As Figure 1 shown in Figure 2 this embodiment, the housing 10 is provided with a plurality of air inlet holes 101, and each air inlet hole 101 is arranged along the circumferential direction of the housing 10; optionally, the housing 10 is further provided with a plurality of ventilation holes 102. The ventilation holes 102 and the air inlet holes 101 are respectively arranged at both ends of the housing 10. Each ventilation hole 102 is arranged along the circumferential direction of the housing 10, and each ventilation hole 102 communicates with a ventilation duct 310. Further, the housing 10 includes a housing body 11, a support 12, a vertical frame 13 and a shock pad 14. The air inlet holes 101 and the ventilation holes 102 are both arranged on the housing body 11; the support 12 is installed on a support. One end of the vertical frame 13 is connected to the housing body 11, and the other end is connected to the shock pad 14. The shock pad 14 is installed on the support 12 to reduce the vibration generated during the operation of the equipment; both the vertical frame 13 and the shock pad 14 are multiple and correspond to each other one by one. The stator 20 is installed inside the housing 10.

[0034] Figures 2 to 4As shown, the rotor assembly 30 is rotatably connected to the housing 10. Optionally, the rotor assembly 30 includes a rotating shaft 31, a first impeller 32 and a second impeller 33. The rotating shaft 31 is rotatably connected to the housing 10. The rotating shaft 31 passes through the stator 20, and an air duct 310 is formed between the rotating shaft 31 and the stator 20. The first impeller 32 and the second impeller 33 are respectively installed at both ends of the rotating shaft 31. Optionally, both the first impeller 32 and the second impeller 33 are made of 17-4PH material. In one embodiment, the rotor assembly 30 further includes a support seat 34, a bearing 35, a thrust disc 36, a first thrust bearing 37 and a second thrust bearing 38. The support seat 34 is sleeved on one end of the rotating shaft 31, and the bearing 35 is sleeved on the support seat 34. The thrust disc 36 is sleeved on the support seat 34, and the thrust disc 36 is arranged between the first thrust bearing 37 and the second thrust bearing 38. The first impeller 32 is sleeved on the support seat 34, and one end of the first impeller 32 abuts against one end of the thrust disc 36 to fix the position of the thrust disc 36. Optionally, there are two support seats 34 and bearings 35, and they correspond one by one. The two support seats 34 are respectively sleeved on both ends of the rotating shaft 31.

[0035] As Figures 1 to 3 shown, the volute casing assembly 40 includes a first volute casing 41 and a second volute casing 42. The first volute casing 41 and the second volute casing 42 respectively cover both ends of the housing 10. The first volute casing 41 covers the first impeller 32, and the second volute casing 42 covers the second impeller 33. Optionally, the first volute casing 41 is provided with an air inlet 410 and an exhaust end 411, and the second volute casing 42 is provided with an air inlet end 421 and an exhaust port 422. Further, the volute casing assembly 40 further includes a fixing plate 43 and a shroud 44. The fixing plate 43 is installed at one end of the housing 10. One end of the shroud 44 is connected to the fixing plate 43, and the other end is connected to the first volute casing 41. Optionally, the bearing 35 and the first thrust bearing 37 are respectively installed at both ends of the fixing plate 43, and the second thrust bearing 38 is installed at one end of the shroud 44 close to the first thrust bearing 37.

[0036] As Figure 1As shown, the temperature reduction component 50 includes a first air pipe 51, a second air pipe 52, and a cooler 53. One end of the first air pipe 51 communicates with the exhaust end 411 of the first volute 41, and the other end communicates with the cooler 53. One end of the second air pipe 52 communicates with the intake end 421 of the second volute 42, and the other end communicates with the cooler 53. The compressed gas pressurized by the first volute 41 flows into the cooler 53 through the first air pipe 51 to reduce the temperature, and then flows into the second volute 42 through the second air pipe 52, and is discharged after being pressurized. Optionally, the cooler 53 includes a housing (not labeled in the figure) and a partition plate (not shown in the figure). The partition plate divides the housing into a gas chamber and a water chamber. The gas chamber is used to accommodate gas, and the water chamber is used to accommodate cooling water. In an embodiment, the temperature reduction component 50 further includes a water inlet pipe 54, a drain pipe 55, and a cooler (not shown in the figure). One end of the water inlet pipe 54 communicates with the cooler, and the other end communicates with the water chamber. One end of the drain pipe 55 communicates with the water chamber, and the other end communicates with the cooler to realize water circulation. Optionally, the cooler is a prior art.

[0037] As Figure 1 , Figure 2 and Figure 4 shown, the two-stage air suspension compressor 100 further includes a heat dissipation component 60. The heat dissipation component 60 includes a heat dissipation cover 61, a cover plate 62, and a heat dissipation wheel 63. The heat dissipation cover 61 is provided with an air outlet 610, and the heat dissipation cover 61 is covered on one end of the housing 10. One end of the cover plate 62 is connected to the heat dissipation cover 61, and the other end is connected to the second volute 42. The heat dissipation wheel 63 is installed at one end of the rotating shaft 31 close to the second impeller 33, and the heat dissipation wheel 63 is accommodated in the accommodation cavity surrounded by the heat dissipation cover 61 and the cover plate 62. In an embodiment, the heat dissipation component 60 further includes a heat dissipation plate 64 and a heat dissipation cover 65. One end of the heat dissipation plate 64 is connected to the heat dissipation cover 61, and the other end is connected to the heat dissipation cover 65. One of the support seats 34 passes through the heat dissipation plate 64 and the heat dissipation cover 65, and one of the bearings 35 is installed on the heat dissipation plate 64, and the heat dissipation wheel 63 is sleeved on the support seat 34. Optionally, the heat dissipation plate 64 is provided with a plurality of through holes 640, and each through hole 640 is arranged along the circumference of the heat dissipation plate 64, and the through holes 640 communicate with the air duct 310. The heat dissipation wheel 63 is accommodated in the space surrounded by the heat dissipation cover 65 and the cover plate 62.

[0038] As Figure 2 and Figure 5As shown, the heat dissipation component 60 further includes a heat conducting member 66. The heat conducting member 66 includes a base portion 661, a fin portion 662 and a partition portion 663. The base portion 661 abuts against the outer side of the stator 20. There are a plurality of fin portions 662, and each fin portion 662 is arranged at intervals along the circumferential direction of the base portion 661. One end of the fin portion 662 abuts against the inner side of the housing 10 for heat conduction. A heat dissipation groove is formed between two adjacent fin portions 662, and the heat dissipation groove communicates with the air inlet hole 101 of the housing 10. One end of the partition portion 663 abuts against one end of the base portion 661, and the other end abuts against the inner side of the housing 10 to close one end of the heat dissipation groove. During use, external gas flows into the air duct 310 through the heat dissipation groove, passes through the through hole 640 and flows into the heat dissipation cover 61 to take away heat in time. At the same time, external gas enters the air duct 310 through the ventilation hole 102. The heat conducting member 66 conducts heat to the housing 10, and dissipates heat in a variety of ways to improve the heat dissipation efficiency.

[0039] During use, as the rotating shaft 31 rotates rapidly, the first impeller 32, the second impeller 33 and the heat dissipation wheel 63 rotate synchronously. Under the action of the first impeller 32, the compressed gas enters the first air pipe 51 through the first volute 41, then passes through the cooler 53, after being cooled down, and then flows into the second volute 42 through the second air pipe 52. After being pressurized, it is discharged, thereby reducing the temperature of the compressed gas.

[0040] The two-stage air suspension compressor 100 of the present utility model is connected to the exhaust end 411 of the first volute 41 through the first air pipe 51, and the other end is connected to the cooler 53. One end of the second air pipe 63 is connected to the intake end 421 of the second volute 42, and the other end is connected to the cooler 53. The compressed gas discharged from the first volute 41 is cooled by the cooler 53 and then discharged through the second volute 42, thereby reducing the temperature of the compressed gas and prolonging the service life of the equipment.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0042] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A two-stage air suspension compressor, characterized in that: It includes a casing, a stator, a rotor assembly, a volute assembly and a cooling assembly, wherein the stator is installed in the casing; the rotor assembly is rotatably connected to the casing; the volute assembly includes a first volute and a second volute, and the first volute and the second volute are respectively covered at both ends of the casing; the cooling assembly includes a first air pipe, a second air pipe and a cooler, one end of the first air pipe is connected to the exhaust end of the first volute, and the other end is connected to the cooler, one end of the second air pipe is connected to the intake end of the second volute, and the other end is connected to the cooler.

2. The two-stage air suspension compressor according to claim 1, characterized in that: The cooler includes an outer shell and a partition, the partition divides the outer shell into an air cavity and a water cavity, the water cavity is used to contain cooling water; the cooling component also includes a water inlet pipe, a drain pipe and a cooler, one end of the water inlet pipe is connected to the cooler, and the other end is connected to the water cavity; one end of the drain pipe is connected to the water cavity, and the other end is connected to the cooler.

3. The two-stage air suspension compressor according to claim 1, characterized in that: The housing comprises a shell, a support, a stand and a shock-absorbing pad, wherein the support is mounted on a support, one end of the stand is connected to the shell, and the other end is connected to the shock-absorbing pad, and the shock-absorbing pad is mounted on the support; There are multiple stands and multiple shock-absorbing pads, and they correspond one to one.

4. The two-stage air suspension compressor according to claim 1, characterized in that: The rotor assembly includes a rotating shaft, a first impeller and a second impeller. The rotating shaft is rotatably connected to the casing, and the rotating shaft passes through the stator. An air duct is formed between the rotating shaft and the stator. The first impeller and the second impeller are respectively installed at two ends of the rotating shaft. The first volute cover is arranged on the first impeller, and the second volute cover is arranged on the second impeller.

5. The two-stage air suspension compressor according to claim 4, characterized in that: The casing is also provided with a plurality of air inlet holes and a plurality of ventilation holes, each of which is arranged along the circumference of the casing; the ventilation holes and the air inlet holes are respectively arranged at two ends of the casing, each of which is arranged along the circumference of the casing, and each of which is connected to the air duct.

6. The two-stage air suspension compressor according to claim 5, characterized in that: The rotor assembly also includes a support seat, a bearing, a thrust plate, a first thrust bearing and a second thrust bearing. The support seat is sleeved on one end of the rotating shaft, and the bearing is sleeved on the support seat; the thrust plate is sleeved on the support seat, and the thrust plate is arranged between the first thrust bearing and the second thrust bearing; the first impeller is sleeved on the support seat, and one end of the first impeller abuts against one end of the thrust plate.

7. The two-stage air suspension compressor according to claim 5, characterized in that: The volute assembly also includes a fixing plate and a shield. The fixing plate is installed at one end of the casing. One end of the shield is connected to the fixing plate, and the other end is connected to the first volute.

8. The two-stage air suspension compressor according to claim 7, characterized in that: It also includes a heat dissipation component, which includes a heat dissipation hood, a cover plate and a heat dissipation wheel. The heat dissipation hood is provided with an air outlet, and the heat dissipation hood is covered on one end of the casing; one end of the cover plate is connected to the heat dissipation hood, and the other end is connected to the second volute; the heat dissipation wheel is installed on one end of the rotating shaft close to the second impeller, and the heat dissipation wheel is accommodated in an accommodating cavity surrounded by the heat dissipation hood and the cover plate.

9. The two-stage air suspension compressor according to claim 8, characterized in that: The heat dissipation assembly also includes a heat dissipation plate and a heat dissipation cover, one end of the heat dissipation plate is connected to the heat dissipation cover, and the other end is connected to the heat dissipation cover; the heat dissipation plate is provided with a plurality of through holes, each of which is arranged along the circumference of the heat dissipation plate, and the through holes are connected to the air duct; the heat dissipation wheel is accommodated in the space enclosed by the heat dissipation cover and the cover plate.

10. The two-stage air suspension compressor according to claim 8, characterized in that: The heat dissipation assembly also includes a heat conducting member, which includes a base portion, a fin portion and a partition portion. The base portion abuts against the outer side of the stator; there are multiple fin portions, each of which is arranged at intervals along the circumference of the base portion, and one end of the fin portion abuts against the inner side of the housing; a spacer is formed between two adjacent fin portions. A heat dissipation groove is connected to the air inlet hole; one end of the partition part abuts against one end of the base part, The other end abuts against the inner side of the housing.

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