Vehicle air compressor capable of reducing oil content of compressed air

Abstract

The invention provides a vehicle air compressor capable of reducing the oil content of compressed air, which is applied to the technical field of air compressors, and is characterized in that the vehicle air compressor comprises an air compressor main body, and air enters the air compressor main body through an air inlet to be compressed and then is discharged from an air outlet; the oil-gas separation tank is used for separating oil and gas output by the air compressor main body; the oil-gas separation tank comprises a tank body and a spiral blade mounted in the tank body, one end of the tank body is provided with an oil-gas input port, and the other end of the tank body is provided with a gas transmission port; a cylindrical channel for separating large liquid drops of oil and a conical channel for separating small liquid drops of oil are arranged in the tank body; the large-opening end of the conical channel faces the rotating blade, the small-opening end of the conical channel faces the gas conveying port, and an oil output port is formed in the connecting position of the cylindrical channel and the conical channel. The cooling mechanism is used for cooling the separated oil liquid and compressed air; the oil-gas separator has the technical effects that effective separation of oil and gas can be remarkably improved, and the oil content in compressed air is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive air compressor technology, and in particular to an automotive air compressor that reduces the oil content in compressed air. Background Technology

[0002] Because the rotor of a conventional screw air compressor is cooled and lubricated by lubricating oil during operation, the compressed air contains oil. This oil will adhere to the valves, instruments, and pipelines of the equipment, causing permanent damage and pollution. Therefore, an oil-gas separator is needed to separate the oil and gas to ensure that the output compressed air is clean and meets the needs of downstream air-using equipment.

[0003] Currently, traditional oil-gas separators mainly use cyclone separation, collision separation, or filter cartridge filtration to achieve oil-gas separation. However, the structural design of existing oil-gas separators has not fully optimized the flow field distribution, resulting in the failure of tiny oil droplets to effectively condense and separate. Some oil mist is discharged with the compressed air, resulting in a high oil content in the output compressed air and increasing the filtration burden of subsequent oil-gas filters. Summary of the Invention

[0004] The purpose of this invention is to provide an automotive air compressor that reduces the oil content in compressed air. Its advantage is that it can significantly improve the effective separation of oil and gas and reduce the oil content in compressed air.

[0005] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0006] An automotive air compressor that reduces the oil content of compressed air, comprising:

[0007] An air compressor body, wherein an air inlet and an air outlet are provided on the air compressor body, the air enters the air compressor body through the air inlet and is compressed to form an oil-air mixture and is discharged from the air outlet;

[0008] An oil-gas separator is connected to the main body of an air compressor and separates the oil and gas output from the air compressor. The oil-gas separator includes a tank body and spiral blades installed inside the tank body. One end of the tank body is provided with an oil-gas inlet connected to an outlet, and the other end of the tank body is provided with an outlet. The tank body is provided with a cylindrical channel for separating large droplets of oil and a conical channel for separating small droplets of oil. The larger opening end of the conical channel faces the rotating blades, and the smaller opening end faces the outlet. An oil outlet is provided on the side wall of the tank body located at the junction of the cylindrical channel and the conical channel.

[0009] And a cooling mechanism for cooling the separated oil and compressed air.

[0010] In one embodiment of the present invention, a conical shell and a support ring are fixedly disposed inside the tank. The support ring is fixed on the inner wall of the tank near the gas inlet. The large opening end of the conical shell is fixed on the inner wall of the tank, and the small opening end of the conical shell is fixedly connected to the support ring.

[0011] In one embodiment of the present invention, a filter cotton is detachably provided in the tank body near the gas inlet.

[0012] In one embodiment of the present invention, the oil outlet is connected to an oil filter.

[0013] In one embodiment of the present invention, the cooling mechanism includes a housing and a cooling fan rotatably disposed within the housing.

[0014] In one embodiment of the present invention, the oil filter is connected to an oil pipe, the air inlet is connected to an air pipe, the oil pipe and the air pipe are arranged vertically and in an S-shape inside the housing, and the cooling fan blows air toward the side of the oil pipe and the air pipe.

[0015] The oil pipe passes through the housing and its other end is connected to the air compressor body; the air pipe passes through the housing and its other end is connected to external air-using equipment.

[0016] In one embodiment of the present invention, a one-way valve is connected to the oil pipe.

[0017] In one embodiment of the present invention, the gas inlet is connected to a pressure valve.

[0018] In one embodiment of the present invention, an intake valve and an air filter are connected to the air inlet.

[0019] As described above, the automotive air compressor of the present invention, which reduces the oil content of compressed air, has the following beneficial effects:

[0020] 1. Compressed oil and gas enter the tank through the oil and gas inlet. After being dispersed by the spiral blades, the oil and gas change to a spiral direction. Under the inertial force of the spiral, the oil and gas circulate and enter the cylindrical channel. Under the action of centrifugal force, large oil particles collide with the inner wall of the cylindrical channel and adhere to it. The large oil particles are separated out in the cylindrical channel. Since the small oil particles are smaller in weight, the small oil particles enter the conical channel with the airflow. Under the action of less centrifugal force, the small oil particles collide with the inner wall of the conical channel and adhere to it. The small oil particles are separated out in the conical channel. The oil adhering to the inner walls of the cylindrical and conical channels flows out through the oil outlet. The extremely small oil mist particles adhere to the filter cotton when passing through it. Through multi-stage separation, the oil content in the compressed air can be effectively reduced, thereby reducing the load on the downstream oil filter and improving the reliability and economy of the system.

[0021] 2. The oil pipes and air pipes are arranged vertically and in an S-shape inside the casing, thereby increasing the flow path of oil and compressed air. The cooling fan blows air towards the oil pipes and air pipes, which can cool the high-temperature oil and high-temperature air at the same time, reducing energy consumption. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure from the left-hand perspective of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure from the right-hand perspective of an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the oil-gas separator structure according to an embodiment of the present invention;

[0025] Figure 4 yes Figure 3 Enlarged diagram of part A in the middle;

[0026] Figure 5 This is a schematic diagram of the arrangement of the oil pipe and the gas pipe in an embodiment of the present invention.

[0027] Reference numerals in the attached drawings: 1. Air compressor body; 11. Air inlet; 12. Air outlet; 13. Oil return port; 14. Air filter; 2. Oil-gas separator; 21. Tank body; 211. Tank body; 212. Tank cover; 213. First fixing ring; 214. Second fixing ring; 215. Fixing bolt; 216. Retaining ring; 217. Sealing ring; 22. Spiral blade; 23. Oil-gas inlet; 24. Air outlet; 25. Cylindrical channel; 26. Conical channel; 27. Oil outlet; 28. Conical shell; 29. ​​Support ring; 3. Filter cotton; 4. Oil filter; 5. Cooling mechanism; 51. Casing; 52. Cooling fan; 53. Oil pipe; 54. Air pipe; 6. Base; 61. Support frame; 62. Mounting frame. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0029] Please see Figures 1 to 5It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0030] Please see Figure 1 and Figure 2 This invention provides an automotive air compressor that reduces the oil content of compressed air, comprising a base 6, an air compressor body 1, an oil-gas separator 2, and a cooling mechanism 5. A support frame 61 is bolted to the base 6. The oil-gas separator 2 is horizontally welded to the support frame 61. A mounting bracket 62 is welded to the upper side wall of the oil-gas separator 2. The air compressor body 1 is bolted to the mounting bracket 62. The cooling mechanism 5 is mounted on the base 6.

[0031] The air compressor body 1 is provided with an air inlet 11, an air outlet 12 and an oil return port 13. Air enters the air compressor body 1 through the air inlet 11 and is compressed to form an oil-air mixture, which is discharged from the air outlet 12. An air inlet valve and an air filter 14 are connected to the front end of the air inlet 11. The air filter 14 is used to filter impurities in the air, and the air inlet valve prevents dust from entering the air compressor and affecting lubrication and sealing performance.

[0032] Please see Figure 3 and Figure 4 The oil-gas separator 2 is connected to the air outlet 12 of the air compressor body 1 and is used to efficiently separate the oil-gas mixture.

[0033] The oil-gas separator 2 includes a tank body 21 and a spiral blade 22 installed inside the tank body 21. An oil-gas inlet 23, connected to an outlet 12, is located at the center of one end of the tank body 21, through which oil and gas enter the tank body 21. An outlet 24 is located at the center of the other end of the tank body 21, through which separated clean air is discharged from the tank body 21. The spiral blade 22 is welded and fixed inside the tank body 21 on the side near the oil-gas inlet 23. The spiral blade 22 is used to create a spiral airflow in the oil-gas mixture entering the tank body 21, enhancing the centrifugal separation effect. The tank body 21 is provided with a cylindrical channel 25 for separating large oil droplets and a conical channel 26 for separating small oil droplets. The diameter of the cylindrical channel 25 is larger than the diameter of the conical channel 26. The conical channel 26 is located downstream of the cylindrical channel 25. The larger opening end of the conical channel 26 faces the rotating blade, and the smaller opening end faces the outlet 24.

[0034] A conical shell 28 and a support ring 29 are fixedly installed inside the tank body 21. The support ring 29 is welded and fixed to the inner wall of the tank body 21 near the gas inlet 24. The large opening end of the conical shell 28 is welded and fixed to the inner wall of the tank body 21, and the small opening end of the conical shell 28 is welded and fixed to the support ring 29. The inner diameter of the support ring 29 is equal to the small opening diameter of the conical shell. The conical shell 28 is fixed inside the tank body 21 and forms a conical channel 26 inside the tank body 21, which improves structural stability and optimizes airflow distribution.

[0035] Compressed oil and gas enter the tank 21 through the oil and gas inlet 23. After being dispersed by the spiral blades 22, the oil and gas change to a spiral direction and circulate under the inertial force of the spiral, entering the cylindrical channel 25. Under the action of centrifugal force, the large oil particles have a large centrifugal radius, so the large oil particles hit the inner wall of the cylindrical channel 25 and flow along the wall surface; while the small oil particles cannot stick to the side wall of the cylindrical channel 25 and continue to move forward. When the small oil particles move into the conical channel 26, under the action of centrifugal force, the small oil particles have a small centrifugal radius, and at this time the channel radius gradually decreases, so the small droplets of oil are further separated in the conical channel 26, and under the action of centrifugal force, they adhere to the inner wall of the conical channel 26 and flow along the wall surface; an oil outlet 27 is provided on the side wall of the tank 21 at the connection between the cylindrical channel 25 and the conical channel 26; and the oil adhering to the inner wall of the cylindrical channel 25 and the inner wall of the conical channel 26 flows out through the oil outlet 27.

[0036] The oil outlet 27 is connected to an oil filter 4, which is used to further remove impurities from the oil.

[0037] Please see Figure 3 and Figure 4A filter cotton 3 is provided downstream of the conical channel 26. The filter cotton 3 is detachably installed on the inner wall of the tank 21 near the gas inlet 24. The filter cotton 3 is used to adsorb extremely small oil mists to further improve the separation effect.

[0038] The tank body 21 includes a tank body 211, a tank cover 212 detachably connected to the tank body 211, and a sealing ring 217 for sealing the tank body 211 and the tank cover 212. In this embodiment, the sealing ring 217 can be made of a high-temperature resistant material. A first fixing ring 213 is welded and fixed to the side wall of the tank body 211, and a second fixing ring 214 is welded and fixed to the side wall of the tank cover 212. The first fixing ring 213 and the second fixing ring 214 can be fixedly connected by fixing bolts 215. A retaining ring 216 is welded and fixed to the inner wall of the tank cover 212. When the tank cover 212 is fixed to the tank body 211, a groove for engaging the filter cotton 3 is formed between the retaining ring 216 and the support ring 29. The filter cotton 3 can be replaced by removing the tank cover 212.

[0039] Please see Figure 1 , Figure 2 and Figure 5 The cooling mechanism 5 is used to cool the separated oil and compressed air. The cooling mechanism 5 includes a housing 51 bolted to the base 6 and a cooling fan 52 rotatably disposed inside the housing 51.

[0040] The oil filter 4 is connected to an oil pipe 53. The other end of the oil pipe 53 after passing through the housing 51 is connected to the oil return port 13, so as to replenish the oil in the air compressor body 1. A one-way valve is provided on the oil pipe 53 to prevent the oil in the air compressor body 1 from flowing back. The air outlet 24 is connected to an air pipe 54 and is equipped with a pressure valve to regulate the output air pressure. The other end of the air pipe 54 after passing through the housing 51 is connected to an external air-using device.

[0041] The oil pipe 53 and air pipe 54 are arranged vertically and in an S-shape inside the housing 51, increasing the flow path of oil and compressed air. The cooling fan 52 blows air towards the oil pipe 53 and air pipe 54, which can simultaneously cool the high-temperature oil and high-temperature air, accelerating heat dissipation. In this embodiment, the oil pipe 53 and air pipe 54 can be made of copper or aluminum to improve thermal conductivity. Furthermore, the cooling fan 52 in this embodiment can be a variable frequency fan, which automatically adjusts its speed according to the oil temperature and air pressure to improve energy efficiency.

[0042] In this embodiment, the cooling fan 52 can also blow air towards the motor side of the air compressor body, thereby enabling the cooling fan 52 to simultaneously dissipate heat from the high-temperature oil, high-temperature air, and motor, reducing energy consumption.

[0043] Brief description of usage:

[0044] 1. Oil-gas separation process: Compressed oil and gas enter the tank 21 through the oil-gas inlet 23. After being dispersed by the spiral blades 22, the oil and gas change to a spiral direction. Under the inertial force of the spiral, the oil and gas circulate and enter the cylindrical channel 25. Under the action of centrifugal force, large oil particles collide with the inner wall of the cylindrical channel 25 and adhere to the inner wall of the cylindrical channel 25. The large oil particles are separated out in the cylindrical channel 25. Since the small oil particles are smaller in weight, the small oil particles are separated by the airflow. As the oil enters the conical channel 26, under the action of a relatively small centrifugal force, small oil particles collide with and adhere to the inner wall of the conical channel 26. The small oil particles are separated out in the conical channel 26, while the oil adhering to the inner wall of the cylindrical channel 25 and the inner wall of the conical channel 26 flows out through the oil outlet 27. Meanwhile, extremely small oil mist particles adhere to the filter cotton 3 when passing through it. Through multi-stage separation, the oil content in the compressed air can be effectively reduced.

[0045] 2. Cooling process: The high-temperature air and high-temperature oil are cooled and dissipated simultaneously by the cooling fan 52. The cooled oil returns to the air compressor body through the oil return port 13; the cooled compressed air enters the external air-using equipment.

[0046] In summary, this invention significantly reduces the oil content in compressed air and decreases the load on downstream filters through multi-stage centrifugal separation and filter cotton adsorption; at the same time, the use of S-shaped cooling pipes improves heat dissipation efficiency and extends equipment life.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An air compressor for a vehicle which reduces the oil content of compressed air, characterized by: Comprising An air compressor main body (1) is provided with an air inlet (11) and an air outlet (12), the air enters the air compressor main body (1) through the air inlet (11), is compressed to form an oil-gas mixture, and is discharged from the air outlet (12); An oil-gas separation tank (2) is connected with the air compressor main body (1) and separates the oil-gas output by the air compressor main body (1); the oil-gas separation tank (2) comprises a tank body (21) and a spiral blade (22) installed in the tank body (21), one end of the tank body (21) is provided with an oil-gas inlet (23) connected with the air outlet (12), and the other end of the tank body (21) is provided with a gas outlet (24); a cylindrical channel (25) for separating large oil droplets and a conical channel (26) for separating small oil droplets are arranged in the tank body (21); the large opening end of the conical channel (26) faces the rotating blade, and the small opening end faces the gas outlet (24) end; an oil outlet (27) is arranged on the side wall of the tank body (21) at the connection between the cylindrical channel (25) and the conical channel (26); And a cooling mechanism (5) for cooling the separated oil and compressed air.

2. The air compressor of claim 1, wherein: A conical shell (28) and a support ring (29) are fixedly arranged in the tank body (21), the support ring (29) is fixed to the inner wall of the tank body (21) near the gas outlet (24) end, the large opening end of the conical shell (28) is fixed to the inner wall of the tank body (21), and the small opening end of the conical shell (28) is fixedly connected with the support ring (29).

3. The air compressor of claim 2, wherein: A filter cotton (3) is detachably arranged in the tank body (21) near the gas outlet (24) side.

4. The air compressor of claim 1, wherein: The oil outlet (27) is connected with an oil filter (4).

5. The air compressor of claim 4, wherein: The cooling mechanism (5) comprises a shell (51) and a cooling fan (52) rotatably arranged in the shell (51).

6. The air compressor of claim 5, wherein: The oil filter (4) is connected with an oil pipe (53), the gas outlet (24) is connected with an air pipe (54), the oil pipe (53) and the air pipe (54) are arranged in the shell (51) in an S shape and are distributed vertically, and the cooling fan (52) blows air towards the oil pipe (53) and the air pipe (54) side; The other end of the oil pipe (53) after penetrating through the shell (51) is connected with the air compressor main body (1); the other end of the air pipe (54) after penetrating through the shell (51) is connected with an external air equipment.

7. The air compressor of claim 1, wherein: A one-way valve is connected to the oil pipe (53).

8. The air compressor of claim 1, wherein: The gas outlet (24) is connected with a pressure valve.

9. The air compressor of claim 1, wherein: An air inlet valve and an air filter (14) are connected at the air inlet (11).

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