Cooling equipment and air compression equipment

Abstract

The embodiment of the utility model provides cooling equipment and air compression equipment. The cooling equipment comprises a machine body, at least one first cooler, at least one second cooler and at least one fan. An inner cavity is formed in the machine body, the machine body comprises a first surface and a second surface which are located on different planes, the first surface is provided with a first air inlet communicated with the inner cavity, the second surface is provided with a second air inlet communicated with the inner cavity, and the machine body further comprises an air outlet communicated with the inner cavity. And the at least one first cooler is arranged at the first air inlet. And the at least one second cooler is arranged at the second air inlet. The at least one fan is arranged in the inner cavity and used for guiding airflow to penetrate through the at least one first cooler and the at least one second cooler to flow into the inner cavity and flow out of the inner cavity through the air outlet.

Description

Technical Field

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

[0002] In air compressors, both the lubricating oil and the compressed gas typically require cooling. Air compressors are usually equipped with an oil cooler and an aftercooler. The oil cooler cools the lubricating oil, and the aftercooler cools the compressed gas. Traditionally, the oil cooler and aftercooler are located on the same wall and arranged in a flat or side-by-side configuration, occupying a large space and hindering the miniaturization of air compressors. Furthermore, traditional cooling fans are usually fixed in place, making initial installation and subsequent maintenance / removal inconvenient. Utility Model Content

[0003] The purpose of this application is to provide a cooling device and an air compression device to solve or at least partially solve the aforementioned problems and / or other potential problems existing in conventional coolers.

[0004] The first aspect of this application provides a cooling device, comprising: a body having an inner cavity, the body including a first surface and a second surface located on different planes, the first surface having a first air inlet communicating with the inner cavity, the second surface having a second air inlet communicating with the inner cavity, the body also including an air outlet communicating with the inner cavity; at least one first cooler disposed at the first air inlet; at least one second cooler disposed at the second air inlet; and at least one fan disposed in the inner cavity, the at least one fan being used to guide airflow through the at least one first cooler and the at least one second cooler into the inner cavity, and out of the inner cavity via the air outlet.

[0005] In some embodiments, the first surface is adjacent to the second surface, and / or the first surface is perpendicular to the second surface.

[0006] In some embodiments, at least one fan includes a first fan and a second fan, the first fan and the second fan being staggered in the horizontal and / or vertical direction of the body.

[0007] In some embodiments, the body has a first opening communicating with the inner cavity, and the first opening has a first mounting portion rotatably connected to the body; and at least one fan includes a first fan disposed in the first mounting portion, the first fan being adapted to rotate into or out of the inner cavity through the first opening under the drive of the first mounting portion.

[0008] In some embodiments, the first mounting part is connected to the body via a hinge or a pivot.

[0009] In some embodiments, the first mounting portion is provided with a first through hole, the first fan includes a first fan motor and a first impeller, the first impeller is located on the inner side of the first mounting portion, the first fan motor is located on the outer side of the first mounting portion, and the shaft of the first fan motor passes through the first through hole and is connected to the first impeller.

[0010] In some embodiments, the device further includes: a first support portion disposed on the outside of the body and located below the first fan motor, the first support portion being adapted to support the first fan motor when the first impeller rotates into the inner cavity; and / or a second support portion disposed on the outside of the body and located below the first fan motor, the second support portion being adapted to support the first fan motor when the first impeller rotates out of the inner cavity.

[0011] In some embodiments, the first mounting portion is adapted to block at least a portion of the first opening.

[0012] In some embodiments, the body has a second opening communicating with the inner cavity, and a second mounting portion is slidably connected to the body; and at least one fan includes a second fan disposed in the second mounting portion, the second fan being adapted to move into or out of the inner cavity through the second opening under the drive of the second mounting portion.

[0013] In some embodiments, the body further includes an adjacent third surface and a fourth surface, a second opening is provided on the fourth surface, a third opening is provided on the third surface communicating with the second opening, and a second mounting portion is slidably connected to the third opening and adapted to block the third opening.

[0014] In some embodiments, at least one of the upper and lower edges of the third opening is provided with a slide rail, and the second mounting part is slidably connected to the body via the slide rail.

[0015] In some embodiments, the second mounting portion is provided with a second through hole, and the second fan includes a second fan motor disposed on the outside of the second mounting portion and a second impeller disposed on the inside of the second mounting portion. The shaft of the second fan motor passes through the second through hole and is connected to the second impeller.

[0016] In some embodiments, the inner cavity includes a first inner cavity and a second inner cavity that are interconnected, a first air inlet and a second air inlet that are connected to the first inner cavity, an air outlet that is connected to the second inner cavity, and at least one fan that is disposed in the second inner cavity.

[0017] In some embodiments, for each of at least one fan, the fan includes a fan motor and a centrifugal impeller, one end of the centrifugal impeller is connected to the shaft of the fan motor, and the other end of the centrifugal impeller is provided with an air intake; and the machine body is provided with an air guide and an air guide shroud corresponding to the fan, the air guide communicates with a first inner cavity and a second inner cavity, one end of the air guide shroud is connected to the air guide shroud, and the other end of the air guide shroud extends to the air intake.

[0018] A second aspect of this application provides an air compression device, comprising an air compressor unit and the cooling device described above. The air compressor unit includes at least an air compressor head, a drive motor drivenly connected to the air compressor head, and an oil-gas separator connected to the outlet of the air compressor head. The oil outlet and oil return port of the oil-gas separator are respectively connected to at least one first cooler, which is adapted to cool lubricating oil. The air outlet of the oil-gas separator is connected to at least one second cooler, which is adapted to cool compressed gas.

[0019] The cooling device of this application embodiment deploys a first cooler and a second cooler on a first surface and a second surface located on different planes on the body, respectively. This improves the compactness of the cooling device and reduces its size. Furthermore, because the first and second coolers are arranged compactly, the airflow through them, guided by at least one fan, can be ensured. This not only guarantees the heat dissipation efficiency of the first and second coolers but also helps reduce the number of fans or lower their power, thus reducing the production cost of the cooling device. Attached Figure Description

[0020] 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:

[0021] Figure 1 and Figure 2 Perspective views of a cooling device according to some embodiments of this application are shown from different angles.

[0022] Figure 3 and Figure 4 Cross-sectional views of a cooling device according to some embodiments of this application are shown respectively;

[0023] Figure 5 An exploded view of a cooling device according to some embodiments of this application is shown;

[0024] Figure 6 A perspective view of a cooling device according to some embodiments of this application is shown after the first and second coolers have been removed from the inner cavity;

[0025] Figure 7 A top view of a cooling device according to some embodiments of this application is shown after the first and second coolers have been removed from the inner cavity;

[0026] Figure 8 Exploded views of a cooling device according to other embodiments of this application are shown; and

[0027] Figure 9 and Figure 10 Perspective views of an air compression device according to some embodiments of this application are shown from different angles.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Cooling equipment; 110 - Body; 111 - First surface; 112 - Second surface; 113 - Third surface; 114 - Fourth surface; 115 - Top surface; 116 - First mounting part; 117 - First through hole; 118 - Second mounting part; 119 - Second through hole;

[0030] 120 - Inner cavity; 121 - First inner cavity; 122 - Second inner cavity; 123 - First air inlet; 124 - Second air inlet; 125 - Air outlet; 126 - First opening; 127 - Second opening; 128 - Third opening; 129 - Air guide vent;

[0031] 131-First support section; 132-Second support section; 133-Third support section; 134-Slide rail; 135-First baffle; 136-Second baffle; 137-Exhaust hood; 138-Air guide hood;

[0032] 141 - First cooler; 142 - Second cooler;

[0033] 150 - Fan; 151 - First Fan; 152 - First Fan Motor; 153 - First Impeller; 154 - Second Fan; 155 - Second Fan Motor; 156 - Second Impeller; 157 - Air Inlet; and

[0034] 200 - Air compressor unit; 210 - Drive motor; 220 - Air compressor head; 230 - Oil-gas separator. 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 a cooling device, see [link to relevant documentation] Figures 1 to 5 As shown, the cooling device in this embodiment of the application includes a body 110, at least one first cooler 141, at least one second cooler 142, and at least one fan 150.

[0037] The body 110 has an internal cavity 120. The body 110 includes a first surface 111 and a second surface 112 located on different planes. The first surface 111 has a first air inlet 123 communicating with the internal cavity 120, and the second surface 112 has a second air inlet 124 communicating with the internal cavity 120. The body 110 also includes an air outlet 125 communicating with the internal cavity 120. In some examples, the air outlet 125 may be located on the top surface 115 of the body 110. Of course, the air outlet 125 may also be located on other surfaces of the body 110, and the embodiments of this disclosure are not limited thereto.

[0038] At least one first cooler 141 is located at the first air inlet 123. In some examples, it is used in conjunction with... Figure 1 and Figure 4 As shown, the at least one first cooler 141 may include two first coolers 141, which may be connected in series or in parallel. Of course, the cooling unit may also include one or more first coolers 141, and the number of first coolers 141 is not limited in the embodiments of this disclosure.

[0039] At least one second cooler 142 is located at the second air inlet 124. In some examples, it is used in conjunction with... Figure 1 and Figure 4 As shown, the at least one second cooler 142 may include one second cooler 142. It is understood that the cooling unit may also include multiple second coolers 142. In some examples, the first cooler 141 and / or the second cooler 142 may be a finned cooler or other type of air-cooled cooler.

[0040] At least one fan 150 is disposed within the inner cavity 120. The fan 150 guides airflow through at least one first cooler 141 and at least one second cooler 142 into the inner cavity 120, and out of the inner cavity 120 via an air outlet 125. Thus, air is used to cool the medium flowing through the first cooler 141 and the second cooler 142. For example, the hot-side passage of the first cooler 141 can be connected to a lubricating oil circulation line, and the hot-side passage of the second cooler 142 can be connected to a compressed gas delivery line. In this case, air can be used to cool both the lubricating oil and the compressed gas.

[0041] The cooling device 100 of this application embodiment deploys a first cooler 141 and a second cooler 142 on a first surface 111 and a second surface 112 located on different planes on the body 110, respectively. This improves the compactness of the cooling device 100 and reduces its size. Furthermore, because the first cooler 141 and the second cooler 142 are arranged compactly, the airflow through the first cooler 141 and the second cooler 142 can be ensured under the guidance of at least one fan 150. This not only guarantees the heat dissipation efficiency of the first cooler 141 and the second cooler 142, but also helps to reduce the number of fans 150 or lower their power, thus reducing the production cost of the cooling device 100.

[0042] In some embodiments, the first surface 111 may be adjacent to the second surface 112. This facilitates a more compact design for the first cooler 141 and the second cooler 142. As an example, combining... Figure 1 As shown, the first surface 111 and the second surface 112 can be two adjacent sides of the body 110.

[0043] In some embodiments, the first surface 111 may be perpendicular to the second surface 112. As an example, continuing with the combination... Figure 1 As shown, the body 110 can be rectangular or approximately rectangular, and the first surface 111 and the second surface 112 can be two adjacent and mutually perpendicular sides of the body 110. This helps to further reduce the overall size of the cooling device 100.

[0044] In some embodiments, in conjunction with Figure 3 As shown, the inner cavity 120 includes a first inner cavity 121 and a second inner cavity 122 that are interconnected. A first air inlet 123 and a second air inlet 124 communicate with the first inner cavity 121, and an air outlet 125 communicates with the second inner cavity 122. At least one fan 150 is disposed in the second inner cavity 122. During operation, the at least one fan 150 guides airflow indirectly through the first inner cavity 121 to flow through the first cooler 141 and the second cooler 142, which helps to improve the uniformity of the airflow through the first cooler 141 and the second cooler 142, thereby improving the cooling efficiency of the first cooler 141 and the second cooler 142. As an example, such as... Figure 3 As shown, the body 110 may be provided with an L-shaped partition to divide the inner cavity 120 into a first inner cavity 121 with an L-shaped cross-section and a second inner cavity 122 with a rectangular cross-section.

[0045] In some embodiments, the at least one fan 150 may include a first fan 151 and a second fan 154. Further, the first fan 151 and the second fan 154 are staggered in the lateral and / or vertical direction of the housing 110. This facilitates improving the airflow uniformity through the first cooler 141 and the second cooler 142, thereby improving the heat dissipation efficiency of the first cooler 141 and the second cooler 142. As an example, in conjunction with... Figure 2 and Figure 5 As shown, the body 110 may include a third surface 113 opposite to the first surface 111 and a fourth surface 114 opposite to the second surface 112. The first fan 151 may be located near the second surface 112 of the body 110 and near the top surface 115 of the body 110. The second fan 154 may be located near the fourth surface 114 of the body 110 and near the bottom surface of the body 110. It should be noted that the cooling device 100 is not limited to including two fans 150; the cooling device 100 may include one fan 150 or three or more fans 150. The number of fans 150 is not limited in this embodiment.

[0046] In some embodiments, in conjunction with Figures 3 to 5 As shown, for each of at least one fan 150, the fan 150 includes a fan 150 motor and a centrifugal impeller. One end of the centrifugal impeller is connected to the shaft of the fan 150 motor, and the other end of the centrifugal impeller is provided with an air intake 157. The housing 110 is provided with an air guide 129 and an air guide shroud 138 corresponding to the fan 150. The air guide 129 connects to the first inner cavity 121 and the second inner cavity 122. One end of the air guide shroud 138 is connected to the air guide 129, and the other end of the air guide shroud 138 extends to the air intake 157. This improves the air intake efficiency of the fan 150, thereby improving the cooling efficiency of the first cooler 141 and the second cooler 142.

[0047] For example, the body 110 has a partition separating the first inner cavity 121 and the second inner cavity 122. Air vents 129 are respectively provided on the partition opposite to the first fan 151 and the second fan 154. The air duct 138 can be trumpet-shaped. The flared end of the air duct 138 can connect to the air vent 129, and the constricted end of the air duct 138 can extend to the air intake 157 of the first fan 151 or the second fan 154.

[0048] In some embodiments, the housing 110 is provided with a first opening 126 communicating with the inner cavity 120. A first mounting portion 116 rotatably connected to the housing 110 is provided at the first opening 126. A first fan 151 includes a first fan 151 disposed at the first mounting portion 116, and the first fan 151 is adapted to rotate into or out of the inner cavity 120 via the first opening 126 under the drive of the first mounting portion 116. Specifically, in actual use, the first fan 151 can be driven into the inner cavity 120 by the first mounting portion 116, such as... Figure 2 As shown. During maintenance, it is not necessary to remove the first fan 151 from the first mounting part 116. The first fan 151 can be rotated out of the inner cavity 120 through the first mounting part 116, as shown. Figure 6 and Figure 8 As shown. This improves the ease and efficiency of maintenance of the first fan 151. It should be noted that when the at least one fan 150 includes multiple first fans 151, the multiple first fans 151 can be mounted on the body 110 using a similar structure.

[0049] In some examples, the first mounting portion 116 is adapted to block at least a portion of the first opening 126. Reusing the first mounting portion 116 to block the first opening 126 simplifies the structure of the cooling device 100. In some examples, the first mounting portion 116 may include a first plate-like structure, which may be configured to block all or part of the first opening 126.

[0050] As an example, such as Figures 6 to 8 As shown, a first opening 126 is formed on the third surface 113 opposite to the first fan 151. The first mounting portion 116 may include a first plate-like structure, the lower edge of which can be connected to the lower edge of the first opening 126 via, for example, multiple hinges. The first plate-like structure may be configured to block a portion of the first opening 126, such as a portion near the lower edge of the first opening 126. The cooling device 100 may also include a first baffle 135, which may be configured to block the remaining area of ​​the first opening 126, such as the remaining portion near the upper edge of the first opening 126. It should be noted that the first plate-like structure is not limited to being connected to the body 110 via hinges, but may also be connected to the body 110 via other rotating connecting components such as a shaft; this embodiment does not limit this.

[0051] In some embodiments, in conjunction with Figure 4 and Figure 8As shown, the first mounting portion 116 is provided with a first through hole 117. The first fan 151 includes a first fan motor 152 and a first impeller 153. The first impeller 153 is located inside the first mounting portion 116, and the first fan motor 152 is located outside the first mounting portion 116. The shaft of the first fan motor 152 passes through the first through hole 117 and is connected to the first impeller 153.

[0052] As an example, the first mounting portion 116 may include a first plate-like structure, the middle of which may have a first through hole 117. The shaft of the first fan motor 152 may pass through the first through hole 117 and be connected to the first impeller 153. The first fan motor 152 may be connected to the first plate-like structure, for example, by bolts. During installation, the first mounting portion 116 can drive the first impeller 153 to rotate into the inner cavity 120, while the first fan motor 152 is exposed on the outside of the body 110. The first plate-like structure may be connected to the body 110, for example, by screws. The first baffle 135 may also be connected to the body 110, for example, by screws. During disassembly, the screws between the first baffle 135 and the body 110, as well as the screws between the first plate-like structure and the body 110, are removed. By removing the first baffle 135 and rotating the first plate-like structure outward, the first impeller 153 can be rotated out of the body 110 through the first opening 126, facilitating maintenance of the first impeller 153.

[0053] In some embodiments, in conjunction with Figures 5 to 8 As shown, the cooling device 100 also includes a first support portion 131, which is located on the outside of the housing 110 and below the first fan motor 152. The first support portion 131 can be configured to support the first fan motor 152 when the first impeller 153 is rotated into the inner cavity 120. This helps to improve the stability of the motor. As an example, the first support portion 131 can be formed by, for example, a triangular prism-shaped bracket. Of course, the first support portion 131 can also be formed by any other suitable structure such as a protrusion or plate structure provided on the outside of the housing 110.

[0054] In some embodiments, in conjunction with Figure 2 , Figure 6 and Figure 8 As shown, the cooling device 100 may further include a second support portion 132. The second support portion 132 is located on the outer side of the housing 110 and below the first fan motor 152. The second support portion 132 can be configured to support the first fan motor 152 when the first impeller 153 is rotated out of the inner cavity 120. This provides stable support for the first fan motor 152 during maintenance, facilitating maintenance operations. In some examples, the second support portion 132 may also be formed by any suitable structure, such as a bracket, protrusion, or plate-like structure.

[0055] In some embodiments, in conjunction with Figure 2 , Figure 6 and Figure 7 As shown, the body 110 has a second opening 127 communicating with the inner cavity 120, and a second mounting part 118 is slidably connected to the body 110. A second fan 154 can be mounted on the second mounting part 118, and the second fan 154 can be configured to move into or out of the inner cavity 120 via the second opening 127 under the drive of the second mounting part 118. During use, the second fan 154 can be moved into the inner cavity 120 via the second mounting part 118, such as... Figure 2 and Figure 3 As shown. During maintenance, the second fan 154 can be moved out of the inner cavity 120 through the second opening 127 via the second mounting part 118, which facilitates the maintenance of the second fan 154 and reduces the difficulty of maintenance of the second fan 154.

[0056] In some embodiments, in conjunction with Figures 6 to 8 As shown, a second opening 127 is provided on the fourth surface 114, and a third opening 128 communicating with the second opening 127 is provided on the third surface 113. A second mounting portion 118 is slidably connected to the third opening 128 and is adapted to seal the third opening 128. During installation, the second fan 154 can be moved into the inner cavity 120 via the second opening 127 through the second mounting portion 118, and the third opening 128 is sealed by the second mounting portion 118. Thus, the second mounting portion 118 not only serves as a support structure for the second fan 154 but also seals the third opening 128 and is also a component of the body 110, which helps simplify the structure of the body 110 and reduces production costs.

[0057] In some embodiments, at least one of the upper and lower edges of the third opening 128 is provided with a slide rail 134, and the second mounting portion 118 is slidably connected to the body 110 via the slide rail 134. As an example, the upper and lower edges of the third opening 128 may each be provided with a slide rail 134, and the slide rail 134 may extend laterally to the second opening 127. The second mounting portion 118 may include a second plate-like structure, the upper and lower edges of which may be slidably connected to two slide rails respectively. During installation, while the second plate-like structure is moved laterally into the third opening 128, the second fan 154 can also be moved into the inner cavity 120 via the second opening 127. During disassembly, while the second plate-like structure is moved laterally out of the third opening 128, the second fan 154 can also be moved out of the inner cavity 120 via the second opening 127.

[0058] In some examples, the cooling device 100 may also include a second baffle 136 detachably connected to the second opening 127. This improves the airtightness of the body 110. For example, the second baffle 136 may be detachably connected to the second opening 127 by means of, for example, screws. Of course, the second baffle 136 may also be connected to the body 110 by means of, for example, snap-fit ​​or sliding connection.

[0059] In some embodiments, the second mounting portion 118 is provided with a second through hole 119. The second fan 154 includes a second fan motor 155 disposed on the outer side of the second mounting portion 118 and a second impeller 156 disposed on the inner side of the second mounting portion 118. The shaft of the second fan motor 155 passes through the second through hole 119 and is connected to the second impeller 156. As an example, the second mounting portion 118 may include a second plate-like structure, and the middle part of the second plate-like structure may be provided with, for example, a circular second through hole 119. The second fan motor 155 can be connected to the second plate-like structure by means of, for example, screws or other connecting members.

[0060] In some examples, the cooling device 100 may further include a third support 133, which is connected to the outside of the housing 110 and supported below the second fan motor 155. This improves the stability of the second fan motor 155. As an example, the third support 133 may be formed by a bracket, protrusion, or plate-like structure disposed on the outside of the housing 110; for example, the third support 133 may be formed by a triangular prism-shaped bracket.

[0061] This application also provides an air compression device, see [link to relevant documentation] Figure 9 and Figure 10 As shown, the air compression device in this embodiment includes an air compressor unit 200 and a cooling device 100 as described in any of the above embodiments. The air compressor unit 200 includes at least an air compressor head 220, a drive motor 210 drivenly connected to the air compressor head 220, and an oil-gas separator 230 connected to the outlet of the air compressor head 220. The oil outlet and oil return port of the oil-gas separator 230 are respectively connected to at least one first cooler 141, which is adapted to cool lubricating oil. The air outlet of the oil-gas separator 230 is connected to at least one second cooler 142, which is adapted to cool the compressed gas.

[0062] Therefore, this cooling device 100 can not only cool the lubricating oil, but also cool the compressed gas, integrating the oil cooler and aftercooler into one unit, which helps reduce production costs. Moreover, since the cooling device 100 occupies a small space, it is conducive to the miniaturization of air compression equipment.

[0063] 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. A cooling device, characterized in that, include: The body has an internal cavity. The body includes a first surface and a second surface located on different planes. The first surface is provided with a first air inlet communicating with the internal cavity. The second surface is provided with a second air inlet communicating with the internal cavity. The body also includes an air outlet communicating with the internal cavity. At least one first cooler is located at the first air inlet; At least one second cooler is provided at the second air inlet; as well as At least one fan is disposed in the inner cavity, the at least one fan being used to guide airflow through the at least one first cooler and the at least one second cooler into the inner cavity, and out of the inner cavity via the air outlet.

2. The cooling device according to claim 1, characterized in that, The first surface is adjacent to the second surface, and / or The first surface and the second surface are perpendicular to each other.

3. The cooling device according to claim 1, characterized in that, The at least one fan includes a first fan and a second fan, wherein the first fan and the second fan are arranged in a staggered manner in the horizontal and / or vertical direction of the body.

4. The cooling device according to claim 1, characterized in that, The body has a first opening communicating with the inner cavity, and the first opening has a first mounting part rotatably connected to the body; and The at least one fan includes a first fan disposed on the first mounting portion, the first fan being adapted to rotate into or out of the inner cavity via the first opening under the drive of the first mounting portion.

5. The cooling device according to claim 4, characterized in that, The first mounting part is connected to the body via a hinge or a pivot.

6. The cooling device according to claim 4, characterized in that, The first mounting portion is provided with a first through hole. The first fan includes a first fan motor and a first impeller. The first impeller is located on the inner side of the first mounting portion, and the first fan motor is located on the outer side of the first mounting portion. The rotating shaft of the first fan motor passes through the first through hole and is connected to the first impeller.

7. The cooling device according to claim 6, characterized in that, Also includes: A first support portion is disposed on the outside of the housing and below the first fan motor. The first support portion is adapted to support the first fan motor when the first impeller is rotated into the inner cavity, and / or The second support is located on the outside of the body and below the first fan motor. The second support is adapted to support the first fan motor when the first impeller rotates out of the inner cavity.

8. The cooling device according to claim 4, characterized in that, The first mounting portion is adapted to block at least a portion of the first opening.

9. The cooling device according to claim 1, characterized in that, The body has a second opening communicating with the inner cavity, and a second mounting part is slidably connected to the body; and The at least one fan includes a second fan disposed on the second mounting portion, the second fan being adapted to move into or out of the inner cavity via the second opening under the drive of the second mounting portion.

10. The cooling device according to claim 9, characterized in that, The body also includes an adjacent third surface and a fourth surface, the second opening is provided on the fourth surface, the third surface is provided with a third opening communicating with the second opening, and the second mounting part is slidably connected to the third opening and adapted to block the third opening.

11. The cooling device according to claim 10, characterized in that, At least one of the upper and lower edges of the third opening is provided with a slide rail, and the second mounting part is slidably connected to the body through the slide rail.

12. The cooling device according to claim 9, characterized in that, The second mounting portion is provided with a second through hole, and the second fan includes a second fan motor located on the outside of the second mounting portion and a second impeller located on the inside of the second mounting portion. The shaft of the second fan motor passes through the second through hole and is connected to the second impeller.

13. The cooling device according to claim 1, characterized in that, The inner cavity includes a first inner cavity and a second inner cavity that are interconnected. The first air inlet and the second air inlet are connected to the first inner cavity, and the air outlet is connected to the second inner cavity. The at least one fan is located in the second inner cavity.

14. The cooling device according to claim 13, characterized in that, For each of the at least one fan, the fan includes a fan motor and a centrifugal impeller, one end of the centrifugal impeller being connected to the shaft of the fan motor, and the other end of the centrifugal impeller having an air intake; and The machine body is provided with an air vent and an air shroud corresponding to the fan. The air vent connects the first inner cavity and the second inner cavity. One end of the air shroud is connected to the air vent, and the other end of the air shroud extends to the air intake.

15. An air compression device, characterized in that, The air compressor unit includes an air compressor assembly and a cooling device as described in any one of claims 1 to 14, wherein the air compressor assembly includes at least an air compressor head, a drive motor drivenly connected to the air compressor head, and an oil-gas separator connected to the outlet of the air compressor head; and The oil outlet and return port of the oil-gas separator are respectively connected to the at least one first cooler, which is adapted to cool lubricating oil; the gas outlet of the oil-gas separator is connected to the at least one second cooler, which is adapted to cool compressed gas.

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