Heat dissipation cabin assembly of oil-free piston air compressor

Abstract

The utility model aims to provide the heat dissipation cabin assembly of the oil-free piston air compressor, which can improve the cleanliness of air flowing into and out of the cabin, improve the heat dissipation efficiency of a pump head heat dissipation fin of the oil-free piston air compressor, reduce the working intensity of daily maintenance and improve the working efficiency of the oil-free piston air compressor. And the rolling resistance of grease lubrication parts such as bearings in the device in a cold start state is reduced, and abnormal wear is reduced. The device comprises an installation cabin and an outer side movable cabin door, the outer side movable cabin door is arranged on the front side of the installation cabin, air inlet mesh holes are formed in the lower portion of the outer side movable cabin door, a filter cotton pressing plate is arranged on the back of the outer side movable cabin door, filter cotton is arranged between the outer side movable cabin door and the filter cotton pressing plate, and the filter cotton pressing plate is arranged on the back of the outer side movable cabin door. And a plurality of first exhaust fans are arranged on the rear side of the mounting cabin. The heat dissipation cabin is applied to the technical field of heat dissipation cabins.

Description

Technical Field

[0001] The utility model is applied to the technical field of heat dissipation cabins, and particularly relates to a heat dissipation cabin assembly of an oil-free piston air compressor. Background Art

[0002] Pure electric buses typically use pneumatic braking, and are equipped with an air compressor to pressurize the air outside the vehicle and transfer it to the onboard air reservoir for storage. Currently, the most commonly used onboard air compressors are oil-containing vane air compressors and oil-free piston air compressors. Since vane air compressors require tedious daily maintenance, requiring regular replacement of the lubricating oil, related seals, and oil-gas separators, most pure electric buses currently use oil-free piston air compressors to reduce daily maintenance costs. Compared to traditional oil-containing vane air compressors, the heat generated by the relative friction between the piston and cylinder liner in oil-free piston air compressors is discharged to the outside through the heat sink at the pump head, and then forced air is removed by a cooling fan installed below the compressor.

[0003] Because oil-free piston air compressors are cooled by forced air, vehicle manufacturers often install them on the side of pure electric buses and design vents on the side hatches. The interior facades are often designed to be open or enclosed with mesh panels to ensure that the oil-free piston air compressor installation compartment is ventilated as much as possible. At the same time, attention should also be paid to reducing the splash of road dust or muddy water onto the cooling fan and heat sink of the oil-free piston air compressor during driving. The bottom, front facade, and rear facade of the oil-free piston air compressor installation compartment must be covered with fully sealed panels.

[0004] In hot seasons or environments, although the vents designed on the side of the oil-free piston air compressor compartment are higher than the ground, since it dissipates heat by forcibly supplying external air, it is difficult to avoid dust and muddy water flowing in from the vents on the side doors or the vents on the inner facade during driving, covering the cooling fan blades and the heat sink on the pump head. If not cleaned in time, the heat dissipation performance of the oil-free piston air compressor will be greatly reduced over time, which may cause abnormal wear or premature failure of its internal related moving parts. In cold seasons or environments, since the oil-free piston air compressor operates discontinuously, the ventilated and breathable oil-free piston air compressor compartment design will cause it to frequently start cold, which can easily cause abnormal wear of its internal relatively moving parts.

[0005] Therefore, it is necessary to provide a heat dissipation cabin assembly for an oil-free piston air compressor, which can improve the cleanliness of the air flowing into and out of the cabin, improve the heat dissipation efficiency of the heat sink of the oil-free piston air compressor pump head, reduce the workload of daily maintenance, reduce the rolling resistance of grease-lubricated parts such as internal bearings in the cold start state, and reduce abnormal wear. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a heat dissipation cabin assembly for an oil-free piston air compressor, which can improve the cleanliness of the air flowing into and out of the cabin, improve the heat dissipation efficiency of the heat sink of the oil-free piston air compressor pump head, reduce the workload of daily maintenance, reduce the rolling resistance of grease-lubricated parts such as internal bearings in a cold start state, and reduce abnormal wear.

[0007] The technical solution adopted by the present invention is: the present invention includes an installation cabin and an outer movable cabin door, the outer movable cabin door is arranged at the front side of the installation cabin, an air inlet mesh is opened below the outer movable cabin door, a filter cotton pressure plate is arranged on the back of the outer movable cabin door, filter cotton is arranged between the outer movable cabin door and the filter cotton pressure plate, and a plurality of first exhaust fans are arranged on the rear side of the installation cabin.

[0008] As can be seen from the above scheme, this application adopts a one-way air inlet and outlet design, and the outer movable door has an air inlet with filter cotton to improve the cleanliness of the air flowing into and out of the cabin, thereby improving the heat dissipation efficiency of the oil-free piston air compressor pump head heat sink. It is only necessary to use an air gun to regularly back-blow and clean the filter cotton at the air inlet. Compared with cleaning the dust or foreign matter covering the surface of the oil-free piston air compressor, the intensity of daily maintenance work is greatly reduced. The outer movable door serves as the air inlet, and several of the first exhaust fans serve as the air outlet. By linking the first exhaust fans, a certain degree of heat preservation capacity can be provided to the oil-free piston air compressor cabin in a low temperature environment. Reduce the rolling resistance of its internal bearings and other grease-lubricated parts in the cold start state, and reduce abnormal wear.

[0009] A preferred solution is that an air guide cover is provided on the back of the filter cotton pressure plate, the front of the air guide cover is an unobstructed structure, a long strip air outlet is opened on the upper part of the air guide cover, the lower part of the air guide cover is an unobstructed structure, and a baffle is provided on the rear part of the air guide cover.

[0010] A preferred solution is that a bracket is provided inside the installation cabin, the bracket is used to install an oil-free piston air compressor, and a second exhaust fan is provided at the bottom of the bracket.

[0011] A preferred solution is that the outer movable door includes a door panel, a door frame and an inner panel of the air inlet cavity, the door panel, the door frame and the inner panel of the air inlet cavity are arranged in sequence from the outside to the inside, the air inlet mesh is arranged at the lower front side of the door panel, the door frame is a rectangular frame structure, an air inlet is provided in the middle of the inner panel of the air inlet cavity, the air inlet mesh, the door frame and the inner panel of the air inlet cavity constitute the air inlet cavity of the outer movable door, and mounting holes are provided around the inner panel of the air inlet cavity, and the mounting holes are used to install the air guide cover and the filter cotton pressure plate.

[0012] A preferred solution is that both upper and lower ends of the filter cotton pressing plate are provided with flanges, and the filter cotton is adapted between the flanges at the upper and lower ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 3 1 is a schematic diagram of the exploded three-dimensional structure of the outer movable hatch;

[0016] Figure 4 1 is a schematic diagram of the three-dimensional structure of the air guide cover;

[0017] Figure 5 This is a schematic diagram of the wind direction of the radiator assembly in a stationary state;

[0018] Figure 6 This is a schematic diagram of the wind direction of the radiator compartment assembly in the self-cleaning working state when the vehicle is parked;

[0019] Figure 7 This is a schematic diagram of the wind direction of the heat dissipation compartment assembly in the forced heat dissipation working state;

[0020] Figure 8 This is a schematic diagram of the flow field direction simulation of the top view of the heat dissipation compartment assembly in the forced heat dissipation working state;

[0021] Figure 9 This is a simulation diagram of the flow field direction of the rear view of the heat dissipation compartment assembly in the forced heat dissipation working state;

[0022] Figure 10 This is a schematic diagram of the wind direction of the heat dissipation compartment assembly in the heat preservation working state. DETAILED DESCRIPTION

[0023] like Figures 1 to 4As shown, in this embodiment, the utility model includes an installation cabin 1 and an outer movable cabin door 2, the outer movable cabin door 2 is arranged on the front side of the installation cabin 1, an air inlet mesh 3 is opened below the outer movable cabin door 2, a filter cotton pressure plate 4 is arranged on the back of the outer movable cabin door 2, filter cotton 5 is arranged between the outer movable cabin door 2 and the filter cotton pressure plate 4, and a plurality of first exhaust fans 6 are arranged on the rear side of the installation cabin 1.

[0024] The outer movable hatch 2 serves as a side hatch, and the filter cotton 5 is installed between the outer movable hatch 2 and the filter cotton pressure plate 4. The outside air flowing in through the air inlet mesh 3 must flow through the filter cotton 5 before flowing into the interior of the installation cabin 1, effectively filtering out dust and muddy water from the incoming air. After opening the side hatch, the filter cotton 5 can be cleaned daily by blowing air from the inside to the outside with an air gun, making maintenance relatively simple and convenient. The first exhaust fan 6 exhausts the air inside the installation cabin 1 to the outside, or draws outside air into the interior of the installation cabin 1.

[0025] like Figure 4 As shown, in this embodiment, an air guide cover 7 is provided on the back of the filter cotton pressure plate 4, the front of the air guide cover 7 is an unobstructed structure, a long strip air outlet 8 is provided on the upper part of the air guide cover 7, the lower part of the air guide cover 7 is an unobstructed structure, and a baffle 9 is provided on the rear part of the air guide cover 7.

[0026] A small amount of air from the outside air flowing into the air guide cover 7 from the air inlet cavity of the side door will flow out upwards from the long strip air outlet 8, mainly to quickly take away the hot air flowing out of the pump head when the oil-free piston air compressor is working, thereby improving the heat dissipation efficiency. A completely open air outlet is designed at the bottom of the air guide cover 7. Most of the air flowing into the air guide cover 7 from the air inlet cavity of the side door will flow out downwards from this outlet, and then flow to the cooling fan at the bottom of the oil-free piston air compressor. The cooling fan sucks air from the bottom and blows it upwards. The blown air flows through the heat sink of the oil-free piston air compressor pump head to absorb heat and then flows upwards. The baffle 9 can effectively prevent dust and muddy water from entering the cabin from places other than the side door air inlet net.

[0027] like Figures 1 to 2As shown, in this embodiment, a bracket 10 is provided inside the installation cabin 1, and the bracket 10 is used to install the oil-free piston air compressor. A second exhaust fan 11 is provided at the bottom of the bracket 10. A fully open air outlet is designed below the air guide cover 7. Most of the air flowing into the air guide cover 7 from the air inlet cavity of the side door will flow downward from this outlet and then flow to the second exhaust fan 11 below the oil-free piston air compressor. The second exhaust fan 11 sucks air from the bottom and blows it upward. The blown air flows through the heat sink of the oil-free piston air compressor pump head to absorb heat before flowing upward.

[0028] like Figure 3 As shown, in this embodiment, the outer movable door 2 includes a door panel 12, a door frame 13 and an air inlet cavity inner panel 14, and the door panel 12, the door frame 13 and the air inlet cavity inner panel 14 are arranged in sequence from the outside to the inside, and the air inlet mesh 3 is arranged at the lower front side of the door panel 12, and the door frame 13 is a rectangular frame structure. An air inlet is provided in the middle of the air inlet cavity inner panel 14, and the air inlet mesh 3, the door frame 13 and the air inlet cavity inner panel 14 constitute the air inlet cavity of the outer movable door 2. The air inlet cavity inner panel 14 is provided with mounting holes 15 around it, and the mounting holes 15 are used to install the air guide cover 7 and the filter cotton pressure plate 4.

[0029] The back of the installation cabin 1 is designed with two air outlets. The first exhaust fan 6 is mounted to the air outlets and attached to the outside of the cabin using fasteners. When operating in the forward direction, the first exhaust fan 6 can force the cabin air out of the cabin through the air outlets. The first exhaust fan 6 has a bidirectional exhaust function, which can be switched between forward and reverse directions to exhaust air outward and inward. In the forward exhaust mode, it can exhaust hot air from the cabin, while in the reverse exhaust mode, it can achieve a self-cleaning function by back-blowing the filter cotton.

[0030] like Figure 2 As shown, in this embodiment, the upper and lower ends of the filter cotton pressing plate 4 are provided with flanges 16, and the filter cotton 5 is adapted to fit between the flanges 16. The flanges 16 are used to increase the lateral structural strength of the filter cotton pressing plate 4 and also to limit the filter cotton 5, preventing it from falling from below or being crushed by the filter cotton pressing plate 4.

[0031] like Figure 5 As shown, in this embodiment, in a stationary state, generally when the air volume in the vehicle's air tank is relatively sufficient, the oil-free piston air compressor and its cooling fan stop working, and the exhaust fan stops working.

[0032] like Figure 6As shown, in this embodiment, the self-cleaning working state is in the parking state. Generally, after the vehicle is powered on, the application can be set to enter the self-cleaning mode, the oil-free piston air compressor and its cooling fan stop working, and the exhaust fan reverses and exhausts for a few seconds to achieve the effect of cleaning the filter cotton.

[0033] like Figures 7 to 9 As shown, in this embodiment, in the forced heat dissipation working state: generally when the air volume in the vehicle's air tank is relatively insufficient, the oil-free piston air compressor and its cooling fan are working normally, it is detected that the temperature at the pump head of the oil-free piston air compressor is high, and the exhaust fan is exhausting in the positive direction.

[0034] like Figure 10 As shown, in this embodiment, in the heat preservation operating state: in a relatively low temperature environment, the oil-free piston air compressor and its cooling fan operate normally. When the temperature at the pump head of the oil-free piston air compressor is detected to be low, the exhaust fan stops operating. The air in the heat dissipation compartment of the oil-free piston air compressor is difficult to exchange heat with the cabin, and the cabin air temperature rises with the heat generated by the air compressor, achieving a short-term heat preservation effect.

Claims

1. A heat dissipation compartment assembly for an oil-free piston air compressor, characterized by: It comprises an installation cabin (1) and an outer movable cabin door (2), wherein the outer movable cabin door (2) is arranged at the front side of the installation cabin (1), the outer movable cabin door (2) is provided with an air inlet mesh hole (3), a filter cotton pressing plate (4) is arranged at the back of the outer movable cabin door (2), filter cotton (5) is arranged between the outer movable cabin door (2) and the filter cotton pressing plate (4), and a plurality of first exhaust fans (6) are arranged at the rear side of the installation cabin (1).

2. The heat dissipation compartment assembly of the oil-free piston air compressor according to claim 1, characterized in that: An air guide cover (7) is provided on the back of the filter cotton pressing plate (4), the front portion of the air guide cover (7) is an unshielded structure, an elongated air outlet (8) is provided on the upper portion of the air guide cover (7), the lower portion of the air guide cover (7) is an unshielded structure, and a baffle (9) is provided on the rear portion of the air guide cover (7).

3. The heat dissipation compartment assembly of the oil-free piston air compressor according to claim 1, characterized in that: A bracket (10) is provided inside the installation cabin (1), and the bracket (10) is used to install an oil-free piston air compressor. A second exhaust fan (11) is provided at the bottom of the bracket (10).

4. The heat dissipation compartment assembly of the oil-free piston air compressor according to claim 2, characterized in that: The outer movable door (2) comprises a door panel (12), a door frame (13) and an air inlet cavity inner panel (14), wherein the door panel (12), the door frame (13) and the air inlet cavity inner panel (14) are arranged in sequence from the outside to the inside, and the air inlet mesh (3) is arranged at the lower front side of the door panel (12), the door frame (13) is a rectangular frame structure, and an air inlet is provided in the middle of the air inlet cavity inner panel (14), and the air inlet mesh (3), the door frame (13) and the air inlet cavity inner panel (14) constitute the air inlet cavity of the outer movable door (2), and the air inlet cavity inner panel (14) is provided with mounting holes (15) around the periphery thereof, and the mounting holes (15) are used for mounting the air guide cover (7) and the filter cotton pressure plate (4).

5. The heat dissipation compartment assembly of the oil-free piston air compressor according to claim 1, characterized in that: The filter cotton pressing plate (4) is provided with flanges (16) at both upper and lower ends, and the filter cotton (5) is fitted between the flanges (16) at the upper and lower ends.

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