Air compressor

Abstract

The embodiment of the utility model provides an air compressor. The air compressor comprises a machine case and an air compressor set. The air compressor unit is arranged in the case and at least comprises an air compressor head, a driving motor in transmission connection with the air compressor head and an air filter connected with the air inlet end of the air compressor head; the case comprises a base and a first shell rotationally connected with the base, the first shell is provided with a first air inlet, an air inlet cover communicated with the first air inlet is arranged on the inner side of the first shell, and the position of the air inlet cover corresponds to that of the air filter; and the air inlet cover is provided with an opening for the air filter to move in or out of the air inlet cover in the rotating process of the first shell.

Description

Technical Field

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

[0002] The inlet pressure loss and inlet air temperature of an air compressor directly affect the overall power output of the machine. If the air filter is installed directly on the casing wall, it can draw air directly from the outside, which helps reduce the inlet air temperature. However, this installation method usually requires a flexible hose connection between the air filter and the compressor head, increasing production costs and inlet resistance, resulting in a significant inlet pressure loss. Conversely, placing the air filter near the compressor head, while also reducing inlet pressure loss, typically requires drawing air from inside the casing, which is less effective at reducing inlet air temperature. Utility Model Content

[0003] The purpose of this application is to provide an air compressor that solves, or at least partially solves, the aforementioned problems and / or other potential problems existing in conventional air compressors.

[0004] This application provides an air compressor, including a casing and an air compressor unit; the air compressor unit is disposed inside the casing, and the air compressor unit includes at least an air compressor head, a drive motor drivenly connected to the air compressor head, and an air filter connected to the air inlet end of the air compressor head; and the casing includes a base and a first housing rotatably connected to the base, the first housing having a first air inlet, and an air intake shroud communicating with the first air inlet on the inner side of the first housing, the position of the air intake shroud corresponding to the air filter, and the air intake shroud having an opening for the air filter to move into or out of the air intake shroud during the rotation of the first housing.

[0005] In some embodiments, the first housing includes a laterally extending upper shell plate and a vertically extending first side plate, the top end of the first side plate being connected to one side edge of the upper shell plate, and the bottom end of the first side plate being rotatably connected to the base.

[0006] In some embodiments, the air intake shroud is located inside the upper shell plate.

[0007] In some embodiments, the opening includes a first opening located on the bottom surface of the air intake and extending laterally.

[0008] In some embodiments, the opening further includes a second opening, which is disposed on the side of the air intake hood facing away from the first side panel and extends vertically, and the second opening communicates with the first opening.

[0009] In some embodiments, a flap is also included, which is rotatably connected to the opening to avoid or block at least a portion of the opening.

[0010] In some embodiments, the first housing includes an upper housing plate, and an air intake hood is disposed inside the upper housing plate; the opening includes a second opening, which is disposed on one side of the air intake hood and extends vertically, and the top of the flap is rotatably connected to the top of the second opening.

[0011] In some embodiments, the flap is located outside the opening, and the width of the flap is greater than the width of the opening, so as to restrict the flap from turning into the air intake hood.

[0012] In some embodiments, the bottom end of the flap is provided with a guide portion, which is used to contact the air filter during the process of the air filter being moved into the air intake hood and to guide the flap to flip outward of the opening.

[0013] In some embodiments, the guide portion is formed by bending a portion of the plate at the bottom end of the flap toward the outside of the opening.

[0014] In some embodiments, the air intake shroud is provided with a second air intake that communicates with the first air intake. When the air filter is moved into the air intake shroud, there is a buffer space between the air filter and the inner wall of the air intake shroud that is opposite to the second air intake.

[0015] In some embodiments, the first air inlet is located on the side of the first housing.

[0016] In some embodiments, the air filter is connected to the air compressor head via an intake valve, and the air filter is positioned above the intake valve.

[0017] In some embodiments, a second housing is also included, wherein the first housing is rotatably connected to one end of the base and the second housing is disposed at the other end of the base; the first housing is configured to rotate to engage with the second housing to define an inner cavity above the base for receiving the air compressor unit.

[0018] In some embodiments, the air compressor unit further includes a primary oil-gas separator, a secondary oil-gas separator, an oil cooler, an oil filter, and an electrical control box; the top of the base is provided with a first region and a second region, the second region being located on one side of the first region in a first direction, and both the first region and the second region extending along a second direction perpendicular to the first direction; the primary oil-gas separator is disposed in the first region, the drive motor, the air compressor head, and the secondary oil-gas separator are disposed above the primary oil-gas separator, the air filter is connected to the air compressor head through an intake valve, and the air filter is disposed above the intake valve; and the oil filter, the oil cooler, and the electrical control box are disposed in the second region and arranged sequentially along the second direction.

[0019] The air compressor of this embodiment has an air intake hood with an opening on the inner side of the first housing. During rotation of the first housing, the air filter can automatically move into or out of the air intake hood through the opening. During operation, the air filter draws air from outside the compressor casing through the air intake hood and the first air inlet, which helps reduce the intake air temperature of the compressor head and thus improves the compressor's performance. When maintenance is required, the air compressor unit can be exposed simply by rotating the first housing. Furthermore, the air filter and air intake hood do not interfere with each other during rotation, eliminating the need for manual disassembly and reassembly of the air intake hood, thus improving the convenience of air compressor maintenance. 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 an air compressor according to some embodiments of this application are shown with the first housing in a first posture and a second posture, respectively;

[0022] Figures 3 to 5 Cross-sectional views of an air compressor according to some embodiments of this application are shown with the first housing in different orientations.

[0023] Figure 6 A perspective view of an air intake hood and flap according to some embodiments of this application is shown;

[0024] Figure 7 A top view of the air intake shroud according to some embodiments of this application is shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100 - Chassis; 110 - First housing; 111 - Top housing; 112 - First side panel; 113 - Second side panel; 114 - Third side panel; 115 - First hinge; 116 - First air inlet; 120 - Second housing; 130 - Air inlet shroud; 131 - Opening; 132 - First opening; 133 - Second opening; 134 - Second air inlet; 135 - Buffer space; 140 - Flip panel; 141 - Guide section; 142 - Second hinge; 150 - Base;

[0027] 200-Air compressor unit; 210-Air compressor head; 220-Drive motor; 230-Intake valve; 240-Air filter; 250-First-stage oil-gas separator; 260-Second-stage oil-gas separator; 270-Oil filter; 280-Oil cooler; 290-Electrical control box. Detailed Implementation

[0028] 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.

[0029] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0030] This application provides an air compressor, see [link to relevant documentation] Figures 1 to 7 As shown, the air compressor in this embodiment of the application includes a casing 100 and an air compressor unit 200.

[0031] An air compressor unit 200 is housed within a casing 100. The air compressor unit 200 includes at least an air compressor head 210, a drive motor 220, and an air filter 240. The drive motor 220 is connected to the air compressor head 210 to provide power to it. The air filter 240 is connected to the air inlet of the air compressor head 210. Thus, the air filter 240 filters out impurities in the air, improving air cleanliness. The air filtered by the air filter 240 enters the air compressor head 210 for compression.

[0032] In some examples, the air filter 240 can be directly connected to the air compressor head 210 via the intake valve 230. This eliminates the need for piping between the air filter 240 and the air compressor head 210, which helps reduce intake pressure drop. It is understood that in practical applications, the air compressor unit 200 may not be limited to including the air compressor head 210, drive motor 220, and air filter 240. The specific structure of the air compressor unit 200 will not be described here; it will be discussed in the following sections. Figure 2 The specific structure of the air compressor unit 200 is illustrated by example, as detailed in the following description.

[0033] The chassis 100 includes a base 150 and a first housing 110 rotatably connected to the base 150. The first housing 110, together with the base 150, defines an internal cavity for accommodating the air compressor unit 200. As an example, the first housing 110 can have a first position (also referred to as a latched position) and a second position (also referred to as an open position). When the first housing 110 is rotated to the first position, it can latch onto the base 150 to cover the air compressor unit 200. When the first housing 110 is rotated to the second position, the air compressor unit is exposed to facilitate maintenance and servicing of the air compressor unit 200.

[0034] In some examples, the chassis 100 may further include a second housing 120, with the first housing 110 rotatably connected to one end of the base 150 and the second housing 120 disposed at the other end of the base 150. The first housing 110 is configured to rotate to engage with the second housing 120 to define an internal cavity above the base 150 for accommodating the air compressor unit 200. That is, if the first housing 110 is rotated to the engaged position, the first housing 110 and the second housing 120 engage with each other and together cover the air compressor unit 200. This is advantageous in reducing the size of the first housing 110, avoiding interference between the first housing 110 and the air compressor unit 200 during rotation, and facilitating the rotation of the first housing 110.

[0035] The first housing 110 may be provided with a first air inlet 116. An air intake shroud 130 communicating with the first air inlet 116 is provided on the inner side of the first housing 110. The position of the air intake shroud 130 corresponds to the air filter 240, and the air intake shroud 130 has an opening 131 for the air filter 240 to move into or out of the air intake shroud 130 during rotation of the first housing 110. Specifically, during rotation of the first housing 110 from a closed position to an open position, the air filter 240 can be moved out of the air intake shroud 130 through the opening 131. During rotation of the first housing 110 from an open position to a closed position, the air filter 240 can be moved into the air intake shroud 130 through the opening 131.

[0036] In this embodiment of the air compressor, an air intake shroud 130 is provided on the inner side of the first housing 110, and the air intake shroud 130 has an opening 131. During the rotation of the first housing 110, the air filter 240 can move in or out of the air intake shroud 130 through the opening 131. During the use of the air compressor, external air enters the casing 100 through the first air inlet 116, and then enters the air filter 240 through the air intake shroud 130. Impurities in the air are filtered before entering the air compressor head 210 for compression, which helps to reduce the intake temperature of the air compressor head 210, thereby improving the performance of the air compressor. When the air compressor needs to be inspected and maintained, the air compressor unit 200 can be exposed simply by rotating the first housing 110. Moreover, during the rotation of the first housing 110, the air filter 240 and the air intake shroud 130 will not interfere with each other, eliminating the need for manual disassembly and assembly of the air intake shroud 130, thus improving the convenience of air compressor inspection and maintenance.

[0037] In some embodiments, such as Figure 1 and Figure 2 As shown, the first housing 110 includes a laterally extending upper housing plate 111 and a vertically extending first side plate 112. The top end of the first side plate 112 is connected to one side edge of the upper housing plate 111, and the bottom end of the first side plate 112 is rotatably connected to the base 150. In some examples, the bottom end of the first side plate 112 can be rotatably connected to the base 150 via one or more first hinges 115. This results in a simple structure and low cost. Of course, the first side plate 112 can also be connected to the base 150 via any other suitable hinge; the type of hinge is not limited in this embodiment.

[0038] In some examples, the first housing 110 may further include a second side plate 113 and a third side plate 114 disposed opposite to each other. The top end of the second side plate 113 may be connected to the other side edge of the upper housing plate 111, and the side edge of the second side plate 113 may be connected to one side edge of the first side plate 112. The top end of the third side plate 114 may be disposed opposite to the second side plate 113. In this way, the upper housing plate 111, the first side plate 112, the second side plate 113, and the third side plate 114 can form an approximately rectangular first housing 110 (also referred to as a cover), which can effectively cover the air compressor unit 200. The bottom of the first housing 110 and the side opposite to the first side plate 112 are open structures, making it less likely for the first housing 110 to interfere with the air compressor unit 200 during rotation.

[0039] In some embodiments, such as Figures 3 to 5 As shown, the air intake shroud 130 can be located inside the upper shell plate 111. In this way, the air intake shroud 130 is less likely to interfere with the air compressor unit 200, and the layout is compact, which is conducive to improving the space utilization inside the casing 100 and reducing the overall size of the air compressor.

[0040] In some examples, the air filter 240 may be positioned above the air compressor head 210. For instance, the intake valve 230 may be positioned above the air compressor head 210, with its bottom end connected to the air intake end of the air compressor head 210. The air filter 240 may be positioned above the intake valve 230, with its bottom end connected to the top end of the intake valve 230. This reduces the distance between the air filter 240 and the upper housing plate 111, and consequently, the size of the intake shroud 130.

[0041] It should be noted that the air intake shroud 130 is not limited to being located on the inner side of the upper shell 111, but can be located at any appropriate position on the inner side of the first shell 110 as needed. For example, the air intake shroud 130 can also be located on the inner side of, for example, the first side plate 112, the second side plate 113, and the third side plate 114. The specific location of the air intake shroud 130 is not limited in this embodiment.

[0042] In some embodiments, such as Figure 6 and Figure 7 As shown, opening 131 may include a first opening 132, which is disposed on the bottom surface of the air intake shroud 130 and extends laterally. During the rotation of the first housing 110 from the open state to the closed state, the air filter 240 can extend from the bottom of the air intake shroud 130 into the air intake shroud 130. During the rotation of the first housing 110 from the closed state to the open state, the air intake shroud 130 moves obliquely upwards towards the air filter 240, allowing the air filter 240 to smoothly move out from the bottom of the air intake shroud 130 without easily interfering with it.

[0043] In some examples, the air filter 240 may include opposing first and second outer wall surfaces. During the transition from an open to a closed state of the first housing 110, the first outer wall surface enters the intake shroud 130 before the second outer wall surface. During the transition from a closed to an open state of the first housing 110, the second outer wall surface exits the intake shroud 130 before the first outer wall surface. The inner periphery of the first opening 132, opposite the first outer wall surface, may match the shape of the first outer wall surface, and when the first housing 110 is in the closed state, the inner periphery of the first side surrounds the first outer wall surface. For example, if the air filter 240 is cylindrical, elliptical cylindrical, or approximately cylindrical, the inner periphery of the first side of the first opening 132 may be semi-circular. This reduces the gap between the inner periphery of the first side and the first outer wall surface, thereby reducing the amount of air drawn from the interior of the housing 100 by the air filter 240, thus lowering the intake air temperature of the air compressor head 210.

[0044] In some embodiments, in conjunction with Figures 3 to 6As shown, opening 131 also includes a second opening 133, which is located on the side of the air intake shroud 130 facing away from the first side panel 112 and extends vertically. The second opening 133 can communicate with the first opening 132. Thus, the air filter 240 can be moved into or out of the air intake shroud 130 via the first opening 132 and the second opening 133, which helps to reduce the size of the air intake shroud 130. In some examples, the side of the air intake shroud 130 facing away from the first side panel 112 can be open to form the second opening 133. As an example, the air intake shroud 130 can be cuboid in shape. This allows the side of the air intake shroud 130 facing away from the first side panel 112 to be open, forming a rectangular or approximately rectangular second opening 133. This results in a simple structure that is easy to manufacture.

[0045] It should be noted that the location of the opening 131 described above is merely exemplary. In practical applications, the location and orientation of the opening 131 are directly related to the rotation method of the first housing 110 and the location of the air filter 240. The location and orientation of the opening 131 may also differ depending on the rotation method of the first housing 110 or the location of the air filter 240.

[0046] In some embodiments, such as Figures 3 to 6 As shown, the air compressor may also include a flap 140 rotatably connected to the opening 131 to avoid or block at least a portion of the opening 131. Specifically, the flap 140 may be configured to avoid the opening 131 when the air filter 240 passes through it (e.g., moving into or out of the intake shroud 130 through the opening 131), allowing the air filter 240 to move into or out of the intake shroud 130 via the opening 131. The flap 140 may also be configured to block the opening 131 after the air filter 240 has moved into the intake shroud 130, reducing the area of ​​the opening 131 and thus reducing the amount of air drawn from the housing 100 by the air filter 240. This helps to lower the intake temperature of the air compressor head 210 and thus improves the performance of the air compressor.

[0047] As an example, combined Figure 6 As shown, the top end of the flap 140 is rotatably connected to the top end of the second opening 133, and the flap 140 is configured to block or avoid at least a portion of the second opening 133. In some examples, the top end of the flap 140 can be connected to the inside of the upper housing via a hinge, such as a second hinge 142. Thus, after the air filter 240 is moved into the air intake shroud 130, the flap 140 can rotate itself to block the second opening 133 under its own gravity without the need for a reset mechanism such as a spring, which simplifies the structure of the flap 140.

[0048] In some examples, the flap 140 is located outside the opening 131, and the width of the flap 140 is greater than the width of the opening 131, to restrict the flap 140 from rotating into the air intake shroud 130. As an example, such as... Figure 6 As shown, the flap 140 can be located outside the second opening 133, and the width of the flap 140 can be greater than the width of the second opening 133. During the process of the air filter 240 being removed from the air intake shroud 130, the air filter 240 pushes the flap 140 to rotate outwards from the air intake shroud 130 to avoid the second opening 133, as shown. Figures 3 to 5 As shown, during the process of the air filter 240 being moved into the intake hood 130, the bottom end of the flap 140 contacts the top surface of the air filter 240 and flips outward under the push of the air filter 240. As the air filter 240 gradually moves into the intake hood 130, the flap 140 gradually rotates under its own gravity until it blocks the second opening 133, as shown. Figures 3 to 5 As shown. This prevents the flap 140 from being pushed into the air intake shroud 130 by the air filter 240, which would prevent the flap 140 from rotating to the angle that blocks the second opening 133.

[0049] In some embodiments, such as Figure 6 As shown, the bottom end of the flap 140 is provided with a guide portion 141. The guide portion 141 is used to contact the air filter 240 during the process of the air filter 240 being moved into the air intake shroud 130, and to guide the flap 140 to flip outwards from the opening 131 (e.g., the second opening 133). This facilitates the smooth and easy outward flipping of the flap 140 and avoids jamming between the flap 140 and the air filter 240.

[0050] In some examples, the bottom end of the flap 140 may be provided with a guide slope or guide arc surface that slopes outward from the flap 140. In some examples, a portion of the plate at the bottom end of the flap 140 is bent outward from the second opening 133 to form a guide slope or guide arc surface that slopes outward from the bottom end of the flap 140, and a guide portion 141 is formed through this guide slope or guide arc surface. This results in a simple structure that is easy to manufacture.

[0051] In some embodiments, the first air inlet 116 may be located on the side of the first housing 110, for example, the first air inlet 116 may be located on any one of the first side plate 112, the second side plate 113, or the third side plate 114. This can, to some extent, prevent rainwater from flowing into the air intake shroud 130 through the first air inlet 116. As an example, such as... Figure 1 and Figure 2 As shown, the first air inlet 116 can be provided on the second side plate 113, and the first air inlet 116 can be formed by a mesh-like opening 131 structure.

[0052] In some embodiments, such as Figure 6 and Figure 7 As shown, the air intake shroud 130 is provided with a second air intake 134 communicating with the first air intake 116. With the air filter 240 inserted into the air intake shroud 130, a buffer space 135 exists between the air filter 240 and the inner wall of the air intake shroud 130, opposite to the second air intake 134. Thus, after the gas flows into the air intake shroud 130 through the second air intake 134, it first enters the buffer space 135, preventing the airflow from directly impacting the air filter 240. This helps reduce the gas flow velocity and also helps reduce noise generated by the airflow.

[0053] In some examples, the air intake shroud 130 may be formed by a first inner wall opposite to the first outer wall of the air filter 240, and the buffer space 135 may be formed by the gap between the first outer wall of the air filter 240 and the first inner wall of the air intake shroud 130. For example, when the air filter 240 is moved into the air intake shroud 130, there may be a gap of a predetermined width between the first outer wall and the first inner wall.

[0054] The following will combine Figure 2 The structure of the air compressor unit 200 is provided as an example. However, it should not be construed that the air compressor unit 200 is limited to the structure shown below. Any suitable air compressor unit 200 can be selected according to actual needs, and the embodiments of this application do not specifically limit it in this regard.

[0055] In some embodiments, such as Figure 2 As shown, the air compressor unit 200 may include an air compressor head 210, a drive motor 220, an air filter 240, a primary oil-gas separator 250, a secondary oil-gas separator 260, an oil cooler 280, an oil filter 270, and an electrical control box 290.

[0056] The drive motor 220 can be connected to the air compressor head 210 for transmission, and the drive motor 220 can drive the air compressor head 210 to operate. The air filter 240 can be connected to the air intake end of the air compressor head 210 through the air intake valve 230. In this way, the air filter 240 can filter out impurities in the air to improve the cleanliness of the air.

[0057] The outlet of the air compressor head 210 can be connected to the primary oil-gas separator 250, which discharges the mixture of compressed air and lubricating oil (i.e., oil-gas mixture) into the primary oil-gas separator 250. The primary oil-gas separator 250 can separate the lubricating oil and compressed air.

[0058] The inlet of the secondary oil-gas separator 260 can be connected to the outlet of the primary oil-gas separator 250. Compressed gas discharged from the primary oil-gas separator 250 can enter the secondary oil-gas separator 260, where it undergoes secondary oil-gas separation to improve the cleanliness of the compressed gas. The outlet of the secondary oil-gas separator 260 can be connected to an exhaust pipe, allowing the compressed gas that has undergone secondary oil-gas separation to be discharged outside the air compressor, for example, to be supplied to the air-consuming process.

[0059] The oil outlets of the primary oil-gas separator 250 and / or the secondary oil-gas separator 260 can be connected to the oil cooler 280, which cools the lubricating oil. The oil outlet of the oil cooler 218 can be connected to the oil filter 270, which removes impurities from the lubricating oil. The oil outlet of the oil filter 270 can be connected to the oil inlet of the air compressor head 210 to supply low-temperature, clean lubricating oil to the air compressor head 210. The electrical control box 290 can contain power supply equipment to supply power to the air compressor unit 200.

[0060] In some embodiments, the top of the base 150 may have a first region and a second region, the second region being located on one side of the first region in a first direction, and both the first and second regions extending along a second direction perpendicular to the first direction. A primary oil-gas separator 250 is disposed in the first region, and a drive motor 220, an air compressor head 210, and a secondary oil-gas separator 260 are disposed above the primary oil-gas separator 250. An air filter 240 is connected above the air compressor head 210. An oil filter 270, an oil cooler 280, and an electrical control box 290 are disposed in the second region and arranged sequentially along the second direction. Thus, the air compressor unit 200 has a neat and compact layout, which helps to reduce the overall volume of the air compressor unit 200, and consequently, the overall size of the air compressor.

[0061] There may or may not be a clear connection between the first and second areas. If there is no clear connection between the first and second areas, the area occupied by the primary oil-gas separator 250 can be considered the first area. The area occupied by the oil filter 270, oil cooler 280, and electrical control box 290 can be considered the second area.

[0062] As an example, such as Figure 2As shown, the upper surface of the base 150 can be rectangular. One long side of this rectangle can extend parallel to the X-axis, and one short side can extend parallel to the Y-axis. The first direction can be the Y-axis, and the second direction can be the X-axis. The primary oil-gas separator 250 can be deployed near one edge of the base 150, and the primary oil-gas separator 250 can extend along the X-axis. The oil filter 270, oil cooler 280, and electrical control box 290 can be deployed near the other edge of the base 150, and the oil filter 270, oil cooler 280, and electrical control box 290 can be arranged sequentially along the X-axis. In this case, the rectangular area corresponding to the primary oil-gas separator 250 can be defined as the first area, and the rectangular areas corresponding to the oil filter 270, oil cooler 280, and electrical control box 290 can be defined as the second area.

[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. An air compressor characterized by, The air compressor set is arranged in the cabinet, and the air compressor set at least comprises an air compressor head, a driving motor in transmission connection with the air compressor head, and an air filter in connection with an air inlet end of the air compressor head. The cabinet comprises a base and a first shell body rotatably connected with the base, the first shell body is provided with a first air inlet, an inner side of the first shell body is provided with an air inlet cover in communication with the first air inlet, the air inlet cover is located corresponding to the air filter, and the air inlet cover is provided with an opening for moving the air filter into or out of the air inlet cover during rotation of the first shell body. The first shell body comprises an upper shell plate extending in a transverse direction and a first side plate extending in a vertical direction, a top end of the first side plate is connected with a side edge of the upper shell plate, and a bottom end of the first side plate is rotatably connected with the base. The air inlet cover is arranged on the inner side of the upper shell plate.

2. The air compressor of claim 1, wherein, The opening comprises a first opening arranged on a bottom surface of the air inlet cover and extending in the transverse direction.

3. The air compressor of claim 2, wherein, The opening further comprises a second opening arranged on a side of the air inlet cover away from the first side plate and extending in the vertical direction, and the second opening is in communication with the first opening.

4. The air compressor of claim 3, wherein, Further comprising a flap rotatably connected at the opening to avoid or shield at least a partial area of the opening.

5. The air compressor of claim 4, wherein, The first shell body comprises an upper shell plate, the air inlet cover is arranged on the inner side of the upper shell plate, and the opening comprises a second opening arranged on a side of the air inlet cover and extending in the vertical direction, and a top end of the flap is rotatably connected at a top end of the second opening.

6. The air compressor of any one of claims 1-5, wherein, The flap is arranged on the outer side of the opening, and a width of the flap is greater than a width of the opening to limit the flap from being turned into the air inlet cover.

7. The air compressor of claim 6, wherein, A guide portion is arranged at a bottom end of the flap to be in contact with the air filter during movement of the air filter into the air inlet cover and to guide the flap to turn outwards of the opening.

8. The air compressor of claim 7, wherein, The guide portion is formed by bending part of the flap body at the bottom end of the flap outwards of the opening.

9. The air compressor of claim 7, wherein, The air inlet cover is provided with a second air inlet in communication with the first air inlet, and in a state where the air filter moves into the air inlet cover, there is a buffer space between the air filter and an inner wall of the air inlet cover opposite to the second air inlet.

10. The air compressor of claim 9, wherein, The first air inlet is arranged on a side of the first shell body.

11. The air compressor of claim 1, wherein, The air filter is connected with the air compressor head through an air inlet valve, and the air filter is arranged above the air inlet valve.

12. The air compressor of claim 1, wherein, Further comprising a second shell body, the first shell body is rotatably connected at one end of the base, and the second shell body is arranged at the other end of the base; the first shell body is configured to be rotatable to be mutually buckled with the second shell body to define an inner cavity above the base for accommodating the air compressor set.

13. The air compressor of claim 1, wherein, The air compressor set further comprises a primary oil-gas separator, a secondary oil-gas separator, an oil cooler, an oil filter, and an electric control box.

14. The air compressor of claim 1, wherein, ​ 15. The air compressor of claim 1, wherein, ​ The top of the base is provided with a first area and a second area, the second area is located on one side of the first area in a first direction, and the first area and the second area both extend along a second direction perpendicular to the first direction; The primary oil-gas separator is arranged in the first area, the driving motor, the air compressor head and the secondary oil-gas separator are arranged above the primary oil-gas separator, the air filter is connected with the air compressor head through an air inlet valve, and the air filter is arranged above the air inlet valve; and The oil filter, the oil cooler and the electric control box are arranged in the second area and arranged in sequence along the second direction.

Images