Air compression device

Abstract

The embodiment of the utility model provides an air compression device. The device comprises a case, an air compressor unit and a cold area unit. A first inner cavity and a second inner cavity are formed in the machine box, and the first inner cavity is communicated with the second inner cavity through the first opening and the second opening. The air compressor unit at least comprises a compressor host and a first motor in transmission connection with the compressor host, and a first exhaust inlet of the first motor is close to the first opening. The cooling unit at least comprises a shell, a first cooler and at least one fan; the shell is arranged in the second inner cavity, a second air suction opening communicated with the second inner cavity and a first air exhaust opening communicated with the first air outlet are formed in the shell, and the first cooler is arranged at the second air suction opening; the at least one fan comprises at least one second motor arranged on the shell, and the at least one second motor is close to the second opening.

Description

Technical Field

[0001] The exemplary embodiments of this application generally relate to the field of air compression technology, and particularly to an air compression device. Background Technology

[0002] An air compressor typically includes a compressor unit and an electric motor to drive it. In addition, an air compressor is usually equipped with a cooler to cool the compressed gas and lubricating oil. During operation, not only does the motor driving the compressor unit need heat dissipation, but the motor driving the fan in the cooler and the medium flowing through it also require heat dissipation or cooling.

[0003] Currently, conventional air compressors typically use separate air inlets on the chassis for the compressor motor, fan motor, and each cooler to form independent cooling air intake channels. This method has low cooling efficiency and may generate new noise problems when multiple streams of cooling gas converge.

[0004] Therefore, how to improve the heat dissipation efficiency of air compression devices has become a problem worthy of attention for those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide an air compression device to solve, or at least partially solve, the aforementioned problems and / or other potential problems existing in conventional air compression devices.

[0006] This application provides an air compression device, comprising: a chassis having a first inner cavity and a second inner cavity inside, the first inner cavity communicating with the second inner cavity through a first opening and a second opening respectively; the chassis having a first air inlet communicating with the first inner cavity and a first air outlet communicating with the second inner cavity; an air compressor unit disposed in the second inner cavity, the air compressor unit including at least a compressor main unit and a first motor drivenly connected to the compressor main unit, the first air intake of the first motor being close to the first opening; and a cooling unit including at least a housing, a first cooler, and at least one fan; the housing being disposed in the second inner cavity, the housing having a second air intake communicating with the second inner cavity and a first air exhaust communicating with the first air outlet, the first cooler being disposed at the second air intake; the at least one fan including at least one second motor disposed on the housing, and the at least one second motor being close to the second opening.

[0007] In some embodiments, the compressor main unit and the first motor are arranged laterally, and the compressor main unit and the first motor are disposed on the side of the first inner cavity, and the first opening is located on the side of the first inner cavity and opposite to the first motor.

[0008] In some embodiments, the first cavity is defined at least by a first partition located within the chassis and arranged vertically, and a first opening is provided in the first partition.

[0009] In some embodiments, the second opening is located above the first cavity.

[0010] In some embodiments, one or more of the at least one second motor are located in the first inner cavity, and / or one or more of the at least one second motor are located in the second inner cavity, and the one or more second motors are located above or diagonally above the second opening.

[0011] In some embodiments, the first cavity is defined at least by a second partition located within the chassis and arranged laterally, and the second opening is provided on the second partition.

[0012] In some embodiments, the chassis includes at least a bottom wall, a first side wall, and a second side wall, the first side wall being adjacent to the second side wall; a first partition and a second partition are provided inside the chassis, the first partition being deployed near the first side wall, the first partition being arranged vertically and opposite to the second side wall; one end of the second partition being connected to the top of the first partition, and the other end of the second partition extending laterally toward the second side wall, the first partition, the second partition, the first side wall, the second side wall, and the bottom wall defining a first internal cavity.

[0013] In some embodiments, the first air inlet is disposed on the first sidewall and / or the second sidewall.

[0014] In some embodiments, the air compressor unit further includes an oil-gas separator connected to the compressor main unit, and the hot side passage of the first cooler is connected to the outlet of the oil-gas separator to cool the compressed gas.

[0015] In some embodiments, the oil-gas separator and cooling unit are arranged laterally on one side of the chassis, while the compressor main unit, the first motor and the first inner cavity are arranged laterally on the other side of the chassis.

[0016] In some embodiments, the cooling unit further includes a second cooler, and the housing is also provided with a third air inlet. The second cooler is located at the third air inlet. The hot side passage of the second cooler is connected to the oil outlet of the oil-gas separator to cool the lubricating oil.

[0017] In some embodiments, the housing includes a first surface and a second surface that are perpendicular to each other, a second air intake is disposed on the first surface, and a third air intake is disposed on the second surface.

[0018] In some embodiments, the second surface is opposite to the third sidewall of the chassis, and the third sidewall is provided with a second air inlet opposite to the second air intake.

[0019] In some embodiments, the top wall of the chassis is provided with an air inlet, the compressor unit is connected to the air inlet through an air filter, and the air filter is located above the compressor unit.

[0020] In some embodiments, the air filter includes: an intake channel extending vertically, the cross-sectional area of ​​which gradually decreases as the intake channel extends downward; a first intake chamber located below the intake channel and connected to the bottom end of the intake channel; and at least one filter element disposed within the first intake chamber, the outlet of the at least one filter element being connected to the compressor main unit.

[0021] In some embodiments, the air intake passage includes a first passage wall arranged vertically and a second passage wall opposite to the first passage wall, and the distance between the second passage wall and the first passage wall gradually decreases as the second passage wall extends downward.

[0022] In some embodiments, a second air intake chamber is provided on the side of the second channel wall facing away from the first channel wall, the top wall of the first air intake chamber is provided with at least one through hole, and the first air intake chamber is connected to the second air intake chamber through at least one through hole, and at least one filter outlet is respectively connected to at least one through hole; the second air intake chamber is connected to the compressor host.

[0023] In the air compression device of this application embodiment, the first air intake of the first motor is located near the first opening, and at least one second motor of the cooling unit is deployed near the second opening. The airflow entering from the first air inlet is split into two paths, flowing through the first inner cavity into the second inner cavity. These two airflows can respectively dissipate heat from the first motor and the second motor, and then also dissipate heat from the first cooler. This ensures sufficient heat dissipation for the first motor and the at least one second motor. Furthermore, the cooling unit's fan can guide the cooling airflow to dissipate heat from multiple components such as the first motor, the second motor, and the first cooler, which helps to simplify the structure of the air compression device. Attached Figure Description

[0024] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0025] Figure 1 and Figure 2 Perspective views of an air compression device according to some embodiments of this application are shown from different angles.

[0026] Figure 3 and Figure 4 Perspective views of partial structures of an air compression device according to some embodiments of this application are shown from different viewpoints.

[0027] Figure 5 and Figure 6 Perspective views of cooling units according to some embodiments of this application are shown from different angles.

[0028] Figure 7 A cross-sectional view of a cooling unit according to some embodiments of this application is shown;

[0029] Figure 8 A perspective view of an air filter according to some embodiments of this application is shown; and

[0030] Figure 9 A cross-sectional view of an air filter according to some embodiments of this application is shown.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Chassis; 111 - First inner cavity; 112 - Second inner cavity; 121 - Top wall; 122 - Bottom wall; 123 - First side wall; 124 - Second side wall; 125 - Third side wall; 126 - Fourth side wall; 131 - First partition; 132 - Second partition; 141 - First opening; 142 - Second opening; 143 - First air inlet; 144 - Second air inlet; 145 - First air outlet; 146 - Air inlet;

[0033] 200 - Air compressor unit; 210 - Compressor main unit; 220 - First motor; 221 - First air intake; 230 - Oil-gas separator; 240 - Air filter; 241 - Intake channel; 242 - First intake chamber; 243 - Second intake chamber; 244 - Filter element; 245 - First channel wall; 246 - Second channel wall; 250 - Air guide pipe; and

[0034] 300 - Cooling unit; 310 - Shell; 311 - First surface; 312 - Second surface; 313 - Second air intake; 314 - Third air intake; 315 - First air exhaust; 320 - Air guide shroud; 330 - First cooler; 340 - Second cooler; 350 - Fan; 351 - Impeller; 352 - Second motor. Detailed Implementation

[0035] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0036] This application provides an air compression device. Figure 1 and Figure 2 Perspective views of an air compression device according to some embodiments of this application are shown from different angles. Figure 3 and Figure 4Perspective views of partial structures of an air compression device according to some embodiments of this application are shown from different perspectives. Specifically, Figure 3 Is Figure 1 The first side wall 123, the second side wall 124, and part of the top wall 121 of the housing 100 have been removed from the air compressor unit shown. Figure 4 Is Figure 2 The third sidewall 125, fourth sidewall 126, and top wall 121 have been removed from the air compressor unit shown to expose the air compressor unit 200 and the cooling unit 300. See also Figures 1 to 4 As shown, the air compression device in this embodiment includes a housing 100, an air compressor unit 200, and a cooling unit 300.

[0037] The chassis 100 has a first inner cavity 111 and a second inner cavity 112 inside. The first inner cavity 111 communicates with the second inner cavity 112 through a first opening 141 and a second opening 142, respectively. The chassis 100 has a first air inlet 143 communicating with the first inner cavity 111 and a first air outlet 145 communicating with the second inner cavity 112. The specific structure of the first inner cavity 111 and the second inner cavity 112 will be explained and described later with reference to the accompanying drawings and specific examples, and will not be elaborated here.

[0038] An air compressor unit 200 is disposed in the second inner cavity 112. The air compressor unit 200 includes at least a compressor main unit 210 and a first motor 220 that is drivenly connected to the compressor main unit 210. The first air intake 221 of the first motor 220 is located near the first opening 141. The first air intake 221 is used to draw in cooling airflow to dissipate heat from the first motor 220.

[0039] The cooling unit 300 includes at least a housing 310, a first cooler 330, and at least one fan 350, such as Figures 5 to 7 As shown. A housing 310 is disposed within a second inner cavity 112. The housing 310 has a second air intake 313 communicating with the second inner cavity 112 and a first air outlet 315 communicating with a first air outlet 145. A first cooler 330 is disposed at the second air intake 313. The first cooler 330 is configured to provide cooling capacity to the air compressor unit 200; for example, the first cooler 330 can be used to cool compressed gas or lubricating oil. At least one fan 350 includes at least one impeller 351 disposed within the housing 310 and at least one second motor 352 throttlely connected to the at least one impeller 351. The at least one second motor 352 is located on the housing 310 and near the second opening 142. That is, the impeller 351 can be deployed within the housing 310, and the shaft of the second motor 352 can pass through the housing 310 and connect to the impeller 351.

[0040] In actual operation, at least one fan 350 drives the cooling airflow, which flows into the first inner cavity 111 through the first air inlet 143. The cooling airflow then splits into two paths: one path flows through the first opening 141 and the first intake port to the first motor 220, cooling the motor 220; the other path flows through the second opening 142 into the second inner cavity 112, cooling at least one second motor 352 located near the second opening 142. The two cooling airflows then merge and flow through the first cooler 330, cooling the first cooler 330. Finally, the cooling airflow exits the chassis 100 through the first air outlet 145.

[0041] In the air compressor device of this embodiment, the first intake port of the first motor 220 is located near the first opening 141, and at least one second motor 352 of the cooling unit 300 is deployed near the second opening 142. The airflow entering from the first air inlet 143 is split into two paths, flowing through the first inner cavity 111 into the second inner cavity 112. These two airflows can respectively dissipate heat from the first motor 220 and the second motor 352, and subsequently also dissipate heat from the first cooler 330. This ensures sufficient heat dissipation for the first motor 220 and the at least one second motor 352. Furthermore, the fan 350 of the cooling unit 300 can guide the cooling airflow to dissipate heat from multiple components such as the first motor 220, the second motor 352, and the first cooler 330, which helps to simplify the structure of the air compressor device.

[0042] In some embodiments, the compressor main unit 210 and the first motor 220 are arranged laterally, and the compressor main unit 210 and the first motor 220 are disposed on the side of the first inner cavity 111, with the first opening 141 located on the side of the first inner cavity 111 and opposite to the first motor 220. In some examples, the air compressor unit 200 may also include an oil-gas separator 230 connected to the compressor main unit 210. The oil-gas separator 230 and the cooling unit 300 may be laterally deployed on one side of the chassis 100. The compressor main unit 210, the first motor 220, and the first inner cavity may be laterally deployed on the other side of the chassis 100.

[0043] As an example, combined Figure 3As shown, the chassis 100 may include a top wall 121 and a bottom wall 122. The bottom wall 122 may include a first region and a second region extending along a first direction (e.g., the length direction of the chassis 100). The first region and the second region may be arranged along a second direction perpendicular to the first direction (e.g., the width direction of the chassis 100). The compressor main unit 210, the first motor 220, and the first cavity 111 may be deployed in the first region, and the compressor main unit 210, the first motor 220, and the first region may be arranged sequentially along the first direction. The oil-gas separator 230 and the cooling unit 300 may be arranged sequentially along the first direction in the second region.

[0044] In some embodiments, the first inner cavity 111 is defined at least by a first partition 131 located within the chassis 100 and arranged vertically, with a first opening 141 provided on the first partition 131. That is, the first partition 131, arranged vertically, can be provided on the side of the first motor 220 within the chassis 100, and this first partition 131 can be opposite to the first air intake 221 of the first motor 220 to divide and form the first inner cavity 111 within the chassis 100. As an example, in conjunction with... Figures 1 to 3 As shown, the chassis 100 may include adjacent first sidewalls 123 and second sidewalls 124. A first partition 131 may be located near the first sidewall 123 and opposite the second sidewall 124. A first motor 220 may be located on the side of the first partition 131 facing away from the second sidewall 124. A first opening 141 may be formed by a through hole formed in the first partition 131; for example, a circular through hole may be formed in the first partition 131.

[0045] In some embodiments, the second opening 142 is located above the first inner cavity 111. In this case, one or more of the at least one second motor 352 may be located within the first inner cavity 111. Thus, the cooling airflow flowing from the first inner cavity 111 to the second inner cavity 112 can dissipate heat from the one or more second motors 352. Alternatively or additionally, one or more of the at least one second motor 352 may be located within the second inner cavity 112, and the one or more second motors 352 may be located above or diagonally above the second opening 142. Thus, the cooling airflow flowing from the first inner cavity 111 into the second inner cavity 112 can dissipate heat from the one or more second motors 352.

[0046] As an example, combined Figure 3 ,as well as Figures 5 to 7As shown, the cooling unit 300 may include two fans 350, which may be staggered laterally and vertically. Specifically, one fan 350 may be deployed near the fourth side wall 126 and top wall 121 of the chassis 100, located in the second inner cavity 112, above or diagonally above the second opening 142. The other fan 350 may be deployed near the second side wall 124 and bottom wall 122 of the chassis 100, located in the first inner cavity 111, below or diagonally below the second opening 142. Of course, the cooling unit 300 is not limited to including two fans 350. In practical applications, one or more fans 350 may be selected and arranged as needed, and this embodiment does not limit this.

[0047] In some embodiments, in conjunction with Figure 3 and Figure 4 As shown, the first inner cavity 111 is defined at least by a second partition 132 located within the chassis 100 and arranged laterally, and a second opening 142 is provided on the second partition 132. That is, a second partition 132 arranged laterally can be provided inside the chassis 100, the second partition 132 can be opposite to the bottom wall 122 of the chassis 100, and the second partition 132 and the bottom wall 122 can jointly define the first inner cavity 111. In some examples, the second opening 142 may include a mesh-like structure formed on the second partition 132. Of course, the second opening 142 can also be formed by through holes or a grid structure, and the specific structure of the second opening 142 is not limited in this embodiment.

[0048] As an example, continue to combine Figure 3 and Figure 4 As shown, the chassis 100 may contain a first partition 131 and a second partition 132. The first partition 131 may be located near the first sidewall 123 and may be arranged vertically opposite the second sidewall 124. One end of the second partition 132 may be connected to the top of the first partition 131, and the other end of the second partition 132 may extend laterally toward the second sidewall 124. The first partition 131, the second partition 132, the first sidewall 123, the second sidewall 124, and the bottom wall 122 together define a first inner cavity 111. In this case, a second inner cavity 112 may be formed through the space outside the first inner cavity 111 in the chassis 100.

[0049] In some embodiments, the first air inlet 143 may be disposed on the first sidewall 123 and / or the second sidewall 124. In some examples, combined with Figure 1 and Figure 3As shown, the first sidewall 123 may include a plurality of panels arranged sequentially along the length of the chassis 100, wherein at least one panel near the second sidewall 124 may have a mesh structure, through which a first air inlet 143 may be formed. Alternatively or additionally, the first air inlet 143 may also be formed on the second sidewall 124. Alternatively or additionally, the first air inlet 143 may also be formed on the first sidewall 123 and extend vertically to the second sidewall 124.

[0050] In some embodiments, the hot-side passage of the first cooler 330 is connected to the outlet of the oil-gas separator 230 to facilitate cooling of compressed gas. Thus, the compressed gas output from the oil-gas separator 230 flows into the hot-side passage of the first cooler 330, and the cooling airflow passing through the first cooler 330 exchanges heat with the compressed gas, thereby achieving the purpose of cooling the compressed gas.

[0051] In some embodiments, the cooling unit 300 further includes a second cooler 340, and the housing 310 is also provided with a third air intake. The second cooler 340 is located at the third air intake. The hot-side passage of the second cooler 340 is connected to the oil outlet of the oil-gas separator 230 to facilitate cooling of the lubricating oil. In this way, the cooling unit can not only dissipate heat from the compressed gas but also achieve the purpose of cooling the lubricating oil.

[0052] In some embodiments, the housing 310 may include a first surface 311 and a second surface 312 that are perpendicular to each other, a second air intake is disposed on the first surface 311, and a third air intake is disposed on the second surface 312. This facilitates a reduction in the size of the housing 310, and contributes to the miniaturization of the cooling unit 300 and the air compressor. As an example, combined with... Figures 3 to 7 As shown, the first surface 311 and the second surface 312 can be adjacent surfaces of the housing 310. The first surface 311 can be opposite to the fourth side wall 126, and the second surface 312 can be opposite to the third side wall 125. The third side wall 125 is provided with a second air inlet 144 opposite to the second air intake 313. In this way, the at least one fan can draw air from outside the housing 100 through the second air inlet 144 to cool the lubricating oil. Since the temperature of the lubricating oil is relatively high and the temperature of the gas outside the housing 100 is relatively low, this helps to ensure the cooling effect on the lubricating oil.

[0053] In some embodiments, the first exhaust vent 315 can be deployed on the top surface of the housing 310, and the first outlet vent 145 can be disposed on the top wall 121 of the chassis 100, with the first exhaust vent 315 and the first outlet vent 145 facing each other. In some examples, a guide shroud 320 can be provided between the first exhaust vent 315 and the first outlet vent 145. This prevents the hot airflow discharged from the cooling unit 300 from flowing back into the chassis 100, which helps to reduce the gas temperature inside the chassis 100 and improves the heat dissipation efficiency of the air compressor.

[0054] In some embodiments, the air compressor may further include a controller and / or power supply, which are deployed near the first inner cavity 111. The controller and power supply also generate heat during operation. Deploying them near the first inner cavity 111 allows the cooling airflow to simultaneously dissipate heat from the controller and power supply as it flows through the first inner cavity 111 or towards the second inner cavity 112. In some embodiments, the controller and / or power supply may be deployed within the first inner cavity 111. In this way, at least one fan 350 of the cooler effectively reuses the cooling unit to achieve the purpose of cooling the controller and power supply, eliminating the need for a dedicated heatsink for the controller and power supply. This not only simplifies the structure of the air compressor but also reduces its production cost.

[0055] In some embodiments, in conjunction with Figure 3 As shown, the top wall 121 of the chassis 100 is provided with an air inlet 146. The compressor main unit 210 is connected to the air inlet 146 through an air filter 240, and the air filter 240 is located above the compressor main unit 210. In this way, the space above the compressor main unit 210 is effectively utilized to deploy the air filter 240, which helps to improve the compactness of the air compression device and reduce the overall size of the air compression device.

[0056] In some embodiments, in conjunction with Figure 8 and Figure 9 As shown, the air filter 240 may include an intake passage 241, a first intake chamber 242, and at least one filter element 244. The intake passage 241 extends vertically, and its cross-sectional area gradually decreases as it extends downwards. The first intake chamber 242 is located below the intake passage 241 and is connected to the bottom end of the intake passage 241. The at least one filter element 244 is disposed within the first intake chamber 242, and its outlet is connected to the intake port of the compressor main unit 210. Thus, gas flows into the first intake chamber 242 via the intake port 146, and the buffering effect of the first intake chamber 242 helps to reduce the gas flow rate and intake noise.

[0057] In some embodiments, a second air intake chamber 243 is provided on the side of the second channel wall 246 facing away from the first channel wall 245. The top wall 121 of the first air intake chamber 242 is provided with at least one through hole, and the first air intake chamber 242 communicates with the second air intake chamber 243 through the at least one through hole. The air outlet of at least one filter element 244 is respectively connected to the at least one through hole. The second air intake chamber 243 communicates with the air inlet of the compressor main unit 210. For example, the second air intake chamber 243 can be connected to the air intake valve of the compressor main unit 210 through, for example, a vertically extending air guide pipe 250. In this way, the second channel wall 246 is arranged at an angle, and the at least one through hole is located on the side of the second channel wall 246 facing away from the air inlet 146. The second channel wall 246 can act as a sound insulation plate to a certain extent, which is beneficial to further reduce the noise generated by airflow.

[0058] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An air compression device, characterized in that, include: The chassis has a first inner cavity and a second inner cavity inside, and the first inner cavity is connected to the second inner cavity through a first opening and a second opening, respectively; the chassis has a first air inlet connected to the first inner cavity and a first air outlet connected to the second inner cavity. An air compressor unit is disposed in the second inner cavity. The air compressor unit includes at least a compressor main unit and a first motor that is drivenly connected to the compressor main unit. The first air intake of the first motor is close to the first opening. as well as A cooling unit includes at least a housing, a first cooler, and at least one fan; the housing is disposed in a second inner cavity, and the housing is provided with a second air intake communicating with the second inner cavity and a first air exhaust communicating with the first air outlet; the first cooler is disposed at the second air intake; the at least one fan includes at least one second motor disposed on the housing, and the at least one second motor is close to the second opening.

2. The air compression device according to claim 1, characterized in that, The compressor main unit and the first motor are arranged laterally, and the compressor main unit and the first motor are located on the side of the first inner cavity. The first opening is located on the side of the first inner cavity and is opposite to the first motor.

3. The air compression device according to claim 2, characterized in that, The first cavity is defined at least by a first partition located within the chassis and arranged vertically, and the first opening is provided on the first partition.

4. The air compression device according to claim 1, characterized in that, The second opening is located above the first inner cavity.

5. The air compression device according to claim 4, characterized in that, One or more of the at least one second motor are located in the first cavity, and / or One or more of the at least one second motor are located in the second inner cavity, and the one or more second motors are located above or diagonally above the second opening.

6. The air compression device according to claim 4, characterized in that, The first cavity is defined at least by a second partition located within the chassis and arranged laterally, and the second opening is provided on the second partition.

7. The air compression device according to claim 1, characterized in that, The chassis includes at least a bottom wall, a first side wall, and a second side wall, with the first side wall adjacent to the second side wall; the chassis is provided with a first partition and a second partition, with the first partition deployed near the first side wall and arranged vertically and opposite to the second side wall; One end of the second partition is connected to the top of the first partition, and the other end of the second partition extends laterally toward the second sidewall. The first partition, the second partition, the first sidewall, the second sidewall, and the bottom wall define the first inner cavity.

8. The air compression device according to claim 7, characterized in that, The first air inlet is located on the first side wall and / or the second side wall.

9. The air compression device according to claim 1, characterized in that, The air compressor unit also includes an oil-gas separator connected to the compressor main unit, and the hot side passage of the first cooler is connected to the outlet of the oil-gas separator to cool the compressed gas.

10. The air compression device according to claim 9, characterized in that, The oil-gas separator and the cooling unit are arranged laterally on one side of the chassis, and the compressor main unit, the first motor and the first inner cavity are arranged laterally on the other side of the chassis.

11. The air compression device according to claim 9, characterized in that, The cooling unit also includes a second cooler, and the housing is also provided with a third air intake. The second cooler is located at the third air intake. The hot side channel of the second cooler is connected to the oil outlet of the oil-gas separator to cool the lubricating oil.

12. The air compression device according to claim 11, characterized in that, The housing includes a first surface and a second surface that are perpendicular to each other, the second air intake is disposed on the first surface, and the third air intake is disposed on the second surface.

13. The air compression device according to claim 12, characterized in that, The second surface is opposite to the third side wall of the chassis, and the third side wall is provided with a second air inlet opposite to the second air intake.

14. The air compression device according to claim 1, characterized in that, The top wall of the chassis is provided with an air inlet, and the compressor main unit is connected to the air inlet through an air filter, with the air filter located above the compressor main unit.

15. The air compression device according to claim 14, characterized in that, The air filter includes: The air intake channel extends vertically, and its cross-sectional area gradually decreases as it extends downward. A first air intake chamber is located below the air intake channel, and the first air intake chamber is connected to the bottom end of the air intake channel; and At least one filter element is disposed in the first air inlet chamber, and the air outlet of the at least one filter element is connected to the compressor main unit.

16. The air compression device according to claim 15, characterized in that, The air intake channel includes a first channel wall arranged vertically and a second channel wall opposite to the first channel wall, and as the second channel wall extends downward, the distance between the second channel wall and the first channel wall gradually decreases.

17. The air compression device according to claim 16, characterized in that, The second channel wall has a second air intake chamber on the side opposite to the first channel wall. The top wall of the first air intake chamber has at least one through hole, and the first air intake chamber is connected to the second air intake chamber through the at least one through hole. The air outlet of the at least one filter element is connected to the at least one through hole. The second air intake chamber is connected to the compressor main unit.

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