Low pressure start vane compressor

Abstract

This utility model belongs to the field of air compressor technology, specifically relating to a low-pressure start-up vane air compressor. It includes a body with a mounting cavity formed within it. A rotor is eccentrically mounted within the mounting cavity, with shafts at both ends. Several mounting slots are formed along the circumference of the rotor, and vanes are mounted within these slots. An inlet chamber is located on the lower side of the mounting cavity, and an outlet chamber is located on the upper side. A volume change chamber is located between the outlet chamber and the inlet chamber. An air passage hole is formed on the side wall of the volume change chamber, and a one-way oil valve assembly is installed outside the air passage hole. The outlet of the one-way oil valve assembly is connected to the outlet. This utility model, through the design of the one-way oil valve assembly, allows some of the air pressure in the volume change chamber to directly enter the outlet through the air passage hole and the one-way oil valve assembly when the air compressor is first started. This reduces the starting power of the air compressor and lowers motor energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and specifically to a low-pressure start sliding vane air compressor. Background Technology

[0002] A vane air compressor is a type of compressor that compresses gas through the rotation of a rotor assembly and vane assemblies, ultimately converting mechanical energy into wind energy. Vane air compressors are widely used in new energy buses, trams, and other fields due to their advantages of small size, light weight, low noise, simple operation, and high reliability. The compressor consists of a rotor assembly and a cylinder. The rotor assembly has longitudinal grooves, and the vane assemblies slide within these grooves. The rotor assembly is eccentrically positioned within the cylinder. When the rotor assembly rotates, the vane assemblies are thrown out by centrifugal force and come into close contact with the cylinder. A closed cavity is formed between two adjacent vane assemblies and the inner wall of the cylinder. The volume of this cavity changes from large to small and then back to large as the rotor assembly and vane assemblies rotate, thus achieving the cycle from intake to compression. However, when the air compressor is first started, it suffers from drawbacks such as high motor starting power, difficulty in starting, and high motor energy consumption. Utility Model Content

[0003] The purpose of this invention is to provide a low-pressure start-up vane air compressor that solves the problem of high initial start-up power of the motor through a one-way oil valve assembly.

[0004] The purpose of this utility model is achieved as follows: A low-pressure start-up vane air compressor includes a body, a mounting cavity formed within the body, a rotor eccentrically mounted within the mounting cavity, and rotating shafts mounted at both ends of the rotor. The rotating shafts are rotatably mounted within the body. Several mounting slots are formed on the circumference of the rotor, and vanes are mounted within the mounting slots. One side of the vanes contacts the inner wall of the mounting cavity. An air inlet chamber is provided on the lower side of the mounting cavity, and an air inlet is connected to the air inlet. An air outlet chamber is provided on the upper side of the mounting cavity, and an air outlet is connected to the air outlet. A volume change chamber is provided between the air outlet chamber and the air inlet chamber. An air passage hole is formed on the side wall of the volume change chamber, and a one-way oil valve assembly is installed on the outer side of the air passage hole. The outlet of the one-way oil valve assembly is connected to the air outlet.

[0005] Preferably, the machine body has a gas passage chamber formed inside, the gas passage chamber is located on one side of the volume change chamber, a sealing cover is installed on the outside of the gas passage chamber, the one-way oil valve group is provided inside the gas passage chamber, one end of the gas passage hole is connected to the gas passage chamber, and one end of the gas passage chamber is connected to the gas outlet.

[0006] Preferably, the one-way oil valve assembly includes a gasket located on the upper end face of the vent hole and a clamping seat located on the upper end face of the gasket. A fixing member is inserted inside the gasket and the clamping seat, and one end of the fixing member is connected to the machine body.

[0007] Preferably, one end of the rotating shaft extends out of the machine body and is connected to a power source. A cylindrical roller bearing is provided between the outer periphery of one end of the rotating shaft and the machine body. An oil seal seat is installed on the outer periphery of one end of the rotating shaft. The oil seal seat is located on the side end face of the machine body and is fixedly connected to the machine body. A sealing ring is provided between the oil seal seat and the machine body. A double-lip oil seal is provided inside the oil seal seat. An oil seal sleeve is provided between the double-lip oil seal and the rotating shaft.

[0008] Preferably, a rear cover is installed on the side end face of the machine body, a double-row angular contact ball bearing is provided between the other end of the rotating shaft and the rear cover, a bearing cover plate is installed on the side of the rear cover, and a sealing ring is provided between the bearing cover plate and the rear cover.

[0009] Preferably, the machine body is provided with an oil injection hole, and an oil injection cavity is formed inside the machine body. One end of the oil injection cavity is connected to the side wall of the oil injection hole. The oil injection cavity is located on one side of the volume change cavity, and a plurality of oil inlet holes are opened in the oil injection cavity.

[0010] Preferably, the lower end of the oil injection hole is formed with a front oil injection channel, the lower end of the front oil injection channel extends to the inner side wall of the front end of the machine body, and the inner side wall of the front end of the machine body is formed with an arc-shaped groove.

[0011] Preferably, the rear cover has a rear oil injection channel, the other end of the oil injection cavity is connected to the rear oil injection channel, the lower end of the rear oil injection channel extends to the inner wall of the rear cover, and the inner wall of the rear cover is formed with an arc-shaped groove.

[0012] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0013] This invention, through the design of a one-way oil valve assembly, allows the air compressor to start up for the first time. Due to the high starting power and energy consumption of the rotor, the rotor speed is relatively slow. As a result, some of the air pressure in the volume change chamber can directly enter the air outlet through the air passage and the one-way oil valve assembly, thereby reducing the starting power of the air compressor and reducing motor energy consumption. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is an exploded structural diagram of the components of the one-way oil valve assembly in this utility model.

[0016] Figure 3 This is a schematic diagram of the exploded structure of the part of this utility model.

[0017] Figure 4 This is a side view of the structure of this utility model.

[0018] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure at point AA.

[0019] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure at point BB.

[0020] Reference numerals: 1-Main body; 2-Mounting cavity; 3-Rotor; 4-Shaft; 5-Mounting groove; 6-Sliding vane; 7-Inlet chamber; 8-Inlet port; 9-Outlet chamber; 10-Outlet port; 11-Volume change chamber; 12-Pass through hole; 13-One-way oil valve assembly; 14-Pass through chamber; 15-Sealing cover plate; 16-Gasket; 17-Pressure seat; 18-Fixing component; 19-Cylindrical roller bearing; 20-Oil seal seat; 21-Sealing ring one; 22-Double lip oil seal; 23-Oil seal sleeve; 24-Rear cover; 25-Double row angular contact ball bearing; 26-Bearing cover plate; 27-Sealing ring two; 28-Oil injection hole; 29-Oil injection channel; 30-Oil inlet; 31-Front oil injection channel; 32-Arc groove one; 33-Rear oil injection channel; 34-Arc groove two. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-6 As shown, a low-pressure start-up vane air compressor includes a body 1, with a mounting cavity 2 formed inside the body 1. A rotor 3 is eccentrically mounted inside the mounting cavity 2, and a rotating shaft 4 is respectively provided at both ends of the rotor 3. The rotating shaft 4 is rotatably mounted inside the body 1. Several mounting grooves 5 are formed on the circumference of the rotor 3, and vanes 6 are provided in the mounting grooves 5. A spring is provided at the bottom of the vane. During the rotation of the rotor 3, one side of the vane 6 always remains in contact with the inner wall of the mounting cavity 2. An air inlet cavity 7 is provided on the lower side of the mounting cavity 2, and the air inlet cavity 7 is connected to an air intake. An air outlet chamber 9 is provided on the upper side of the mounting cavity 2. The air outlet chamber 9 is connected to the air outlet 10. A volume change chamber 11 is provided between the air outlet chamber 9 and the air inlet chamber 7. When the gas passes through the volume change chamber 11, the volume inside the volume change chamber 11 gradually decreases and the pressure gradually increases, completing the air compression process, thereby forming high-pressure gas output. An air passage hole 12 is opened on the side wall of the volume change chamber 11. A one-way oil valve assembly 13 is installed on the outside of the air passage hole 12. The outlet of the one-way oil valve assembly 13 is connected to the air outlet 10.

[0023] This invention, through the design of the one-way oil valve assembly 13, allows the air compressor to start up for the first time. Due to the high starting power and energy consumption of the rotor, the rotor speed is relatively slow. As a result, some of the air pressure in the volume change chamber 11 can directly enter the air outlet 10 through the air passage 12 and the one-way oil valve assembly 13, thereby reducing the starting power of the air compressor and reducing motor energy consumption. After the air compressor has been running for a period of time, the air pressure in the air outlet chamber 9 is significantly greater than the air pressure in the volume change chamber 11, so the one-way oil valve assembly 13 automatically closes.

[0024] The body 1 has an air passage chamber 14 formed inside, which is located on one side of the volume change chamber 11. A sealing cover plate 15 is installed on the outside of the air passage chamber 14 to seal it. The one-way oil valve group 13 is provided inside the air passage chamber 14. One end of the air passage hole 12 is connected to the air passage chamber 14, and one end of the air passage chamber 14 is connected to the air outlet 10, so that the pressure inside the air passage chamber 14 is the same as the pressure at the air outlet 11.

[0025] The one-way oil valve assembly 13 includes a gasket 16 located on the upper end face of the air passage 12 and a pressing seat 17 located on the upper end face of the gasket 16. A fixing member 18 is inserted through the gasket 16 and the pressing seat 17. One end of the fixing member 18 is connected to the machine body 1. When starting, since the pressure in the volume change chamber 11 is higher than the pressure in the air passage chamber 14, some air in the volume change chamber 11 will enter the air passage 12, thereby pushing open the gasket 16 covering the upper end face of the air passage 12 and entering the air passage chamber 14, and finally being discharged from the air outlet 10. After the air compressor has been running for a period of time, the pressure in the air passage chamber 14 will be greater than or equal to the pressure in the volume change chamber 11, so that the pressure in the air passage chamber 14 pushes the gasket 16 to fit tightly in the air passage 12, thereby closing the air passage 12, so that the air compressor can maintain stable operation and continuously output compressed gas.

[0026] One end of the rotating shaft 4 extends out of the machine body 1 and is connected to a rotary power source to drive the rotor to rotate, thereby compressing air. A cylindrical roller bearing 19 is installed between the outer circumference of one end of the rotating shaft 4 and the machine body 1. The bearing has a large radial load capacity and is suitable for bearing heavy loads and impact loads, as well as high-speed rotation. An oil seal seat 20 is installed on the outer circumference of one end of the rotating shaft 4. The oil seal seat 20 is located on the side end face of the machine body 1 and is fixedly connected to the machine body 1. A sealing ring 21 is provided between the oil seal seat 20 and the machine body 1. A double-lip oil seal 22 is provided inside the oil seal seat 20. An oil seal sleeve 23 is provided between the double-lip oil seal 22 and the rotating shaft 4 to prevent lubricating oil leakage and extend service life.

[0027] A rear cover 24 is installed on the side end face of the machine body 1. A double-row angular contact ball bearing 25 is provided between the other end of the rotating shaft 4 and the rear cover 24. It can withstand a large radial load, a combined radial and axial load, and a torque load, which restricts the axial displacement of the shaft in both directions, thereby improving the stability of the rotor during rotation. A bearing cover plate 26 is installed on the side of the rear cover 24. A sealing ring 27 is provided between the bearing cover plate 26 and the rear cover 24 to prevent oil leakage.

[0028] The machine body 1 is provided with an oil injection hole 28, and an oil injection channel 29 is formed inside the machine body 1. One end of the oil injection channel 29 is connected to the side wall of the oil injection hole 28. The oil injection channel 29 is located on one side of the volume change cavity 11. Several oil inlet holes 30 are opened in the oil injection channel 29. Oil can be injected into the inner cavity of the machine body through the oil injection hole 28 and the oil injection channel 29, making oil injection convenient.

[0029] The lower end of the oil injection hole 28 is formed with a front oil injection channel 31, the lower end of the front oil injection channel 31 extends to the inner side wall of the front end of the machine body 1, and the inner side wall of the front end of the machine body 1 is formed with an arc groove 32. Oil can also be injected into the front end of the machine body 1 through the oil injection hole 28 and the front oil injection channel 31, thereby lubricating the cylindrical roller bearing 19 and the rotating shaft 4.

[0030] The rear cover 24 has a rear oil injection channel 33. The other end of the oil injection cavity 29 is connected to the rear oil injection channel 33. The lower end of the rear oil injection channel 33 extends to the inner wall of the rear cover 24. The inner wall of the rear cover 24 is formed with an arc groove 34. Oil can also be injected into the rear end of the machine body 1 through the oil injection hole 28 and the oil injection cavity 29, thereby lubricating the double row angular contact ball bearing 25 and the rotating shaft 4.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-pressure start-up sliding vane air compressor, characterized by, The device includes a body (1), a mounting cavity (2) formed inside the body (1), a rotor (3) eccentrically mounted inside the mounting cavity (2), a rotating shaft (4) is provided at both ends of the rotor (3), the rotating shaft (4) is rotatably mounted inside the body (1), a number of mounting slots (5) are provided on the circumference of the rotor (3), a sliding plate (6) is provided in the mounting slot (5), one side of the sliding plate (6) is in contact with the inner wall of the mounting cavity (2), and an air intake chamber is provided on the lower side of the mounting cavity (2). (7) An air inlet (8) is connected to the air inlet chamber (7). An air outlet chamber (9) is provided on the upper side of the mounting chamber (2). An air outlet (10) is connected to the air outlet chamber (9). A volume change chamber (11) is provided between the air outlet chamber (9) and the air inlet chamber (7). An air passage hole (12) is opened on the side wall of the volume change chamber (11). A one-way oil valve assembly (13) is installed on the outside of the air passage hole (12). The outlet of the one-way oil valve assembly (13) is connected to the air outlet (10).

2. The low-pressure start-up slide vane air compressor of claim 1, wherein: The body (1) has an air passage (14) formed inside. The air passage (14) is located on one side of the volume change chamber (11). A sealing cover (15) is installed on the outside of the air passage (14). The one-way oil valve group (13) is provided inside the air passage (14). One end of the air passage hole (12) is connected to the air passage (14), and one end of the air passage (14) is connected to the air outlet (10).

3. The low-pressure start-up slide vane air compressor of claim 2, wherein: The one-way oil valve assembly (13) includes a gasket (16) located on the upper end face of the air passage (12) and a pressing seat (17) located on the upper end face of the gasket (16). A fixing member (18) is inserted inside the gasket (16) and the pressing seat (17). One end of the fixing member (18) is connected to the machine body (1).

4. The low-pressure start-up slide vane air compressor of claim 1, wherein: One end of the rotating shaft (4) extends out of the machine body (1) and is connected to a power source. A cylindrical roller bearing (19) is provided between the outer periphery of one end of the rotating shaft (4) and the machine body (1). An oil seal seat (20) is installed on the outer periphery of one end of the rotating shaft (4). The oil seal seat (20) is located on the side end face of the machine body (1) and is fixedly connected to the machine body (1). A sealing ring (21) is provided between the oil seal seat (20) and the machine body (1). A double-lip oil seal (22) is provided inside the oil seal seat (20). An oil seal sleeve (23) is provided between the double-lip oil seal (22) and the rotating shaft (4).

5. The low-pressure start-up slide vane air compressor of claim 1, wherein: A rear cover (24) is installed on the side end face of the body (1). A double-row angular contact ball bearing (25) is provided between the other end of the shaft (4) and the rear cover (24). A bearing cover plate (26) is installed on the side of the rear cover (24). A sealing ring (27) is provided between the bearing cover plate (26) and the rear cover (24).

6. The low-pressure start-up slide vane air compressor of claim 1, wherein: The machine body (1) is provided with an oil injection hole (28), and an oil injection channel (29) is formed inside the machine body (1). One end of the oil injection channel (29) is connected to the side wall of the oil injection hole (28). The oil injection channel (29) is located on one side of the volume change chamber (11), and several oil inlets (30) are opened inside the oil injection channel (29).

7. The low-pressure start-up slide vane air compressor of claim 6, wherein: The lower end of the oil injection hole (28) is formed with a front oil injection channel (31), the lower end of the front oil injection channel (31) extends to the inner wall of the front end of the machine body (1), and the inner wall of the front end of the machine body (1) is formed with an arc groove (32).

8. The low-pressure start-up slide vane air compressor of claim 5, wherein: The rear cover (24) has a rear oil injection channel (33) inside. The other end of the oil injection cavity (29) is connected to the rear oil injection channel (33). The lower end of the rear oil injection channel (33) extends to the inner wall of the rear cover (24). The inner wall of the rear cover (24) is formed with an arc-shaped groove (34).

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