Oil leakage prevention structure for compressor

Abstract

The oil leakage prevention structure comprises the compressor, a motor is arranged at one end of the compressor, a rotating shaft of the motor is inserted into the compressor, a gap is formed between the rotating shaft of the motor and a shell of the compressor, one end of the compressor is connected with a ventilation pipe, and a ventilation assembly used for ventilating the rotating shaft of the motor is arranged on the rotating shaft of the motor; the other end of the breather pipe is connected with a breather assembly. The motor has the effect of preventing oil for lubricating the gear from flowing into the motor.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to an oil leakage prevention structure for compressors. Background Art

[0002] The compressor is a machine that converts low-pressure gas into high-pressure gas. The motor drives the piston to compress the gas, and then discharges high-temperature and high-pressure refrigerant gas into the exhaust pipe, providing power for the refrigeration cycle. The oil-gas mixture generated during the compression process is separated into liquid and gas through the oil-gas separation device.

[0003] There are gears in the compressor that are used to transmit motor power and torque. In order to reduce wear and friction, a layer of oil film is generally formed on the surface of the gears through lubricating oil to reduce direct contact between the gears.

[0004] In order to prevent the oil lubricating the gear from flowing into the motor, a shaft seal and sealing ring structure is currently used. However, after the compressor has been working for a long time, the sealing ring or shaft seal may be worn, corroded, or even fail. Under the action of centrifugal force, the lubricating oil will flow into the motor along the output shaft of the motor, affecting the lubrication effect of the motor bearings and thus damaging the motor bearings. Utility Model Content

[0005] In order to prevent the oil lubricating the gear from flowing into the motor and causing damage to the motor bearing, the present application provides an oil leakage prevention structure for a compressor.

[0006] The present application provides an anti-oil leakage structure for a compressor using the following technical solution:

[0007] An anti-oil leakage structure for a compressor comprises a compressor, wherein a motor is provided at one end of the compressor, a rotating shaft of the motor is inserted into the compressor, and a gap is provided between the rotating shaft of the motor and a housing of the compressor, a ventilation pipe is connected to one end of the compressor, a ventilation assembly for ventilating the rotating shaft of the motor is provided on the rotating shaft of the motor, and the other end of the ventilation pipe is connected to the ventilation assembly.

[0008] By adopting the above technical solution, the compressor is driven by a motor. At this time, there is a gap between the motor shaft and the compressor casing. The gas compressed by the compressor is transported to the ventilation component through the ventilation pipe. The ventilation component ventilates the gap between the motor shaft and the compressor. The gas flows away from the motor to prevent the lubricating oil on the gear from flowing into the motor along the motor shaft and causing damage to the motor.

[0009] Optionally, the ventilation assembly includes a bearing, which is sleeved on the motor shaft, and a ventilation plate is sleeved on the side of the bearing away from the motor shaft. The interior of the ventilation plate is hollow, and the ventilation plate is provided with a plurality of ventilation holes for ventilating the motor shaft, and a plurality of the ventilation holes are arranged toward the gap between the motor shaft and the compressor housing. The ventilation pipe is connected to the ventilation plate, and a connecting plate is fixedly provided on the compressor, and a through hole for passing the ventilation pipe is opened on the connecting plate.

[0010] By adopting the above technical solution, the gas generated by the compressor is transported to the hollow structure in the ventilation plate through the ventilation pipe, and then the gas flows from the ventilation hole to the gap between the motor shaft and the compressor housing, reducing the possibility of the lubricating oil on the gear flowing along the motor shaft to the inside of the motor. In addition, the ventilation pipe plays a fixing role on the ventilation plate. When the shaft rotates, under the joint action of the bearing, the ventilation pipe prevents the ventilation plate from rotating with the shaft, and ensures that the ventilation plate normally transports gas to the motor shaft as much as possible.

[0011] Optionally, the ventilation plate is provided with a docking column for connecting the ventilation pipe, the ventilation plate is provided with a docking column for connecting the ventilation pipe, one end of the ventilation pipe is set as a threaded section, the threaded section of the ventilation pipe is externally threadedly connected with a movable nut, and the docking column is threadedly matched with the movable nut.

[0012] By adopting the above technical solution, the movable nut connects the vent pipe and the vent plate with threads, thereby improving the stability of the vent pipe and the vent plate. During installation, it is only necessary to align one end of the vent pipe with one end of the docking column, and then rotate the movable nut to move the movable nut along the threaded section of the vent pipe to the connection between the vent pipe and the docking column to achieve connection. This installation process is simple and improves installation efficiency.

[0013] Optionally, a convex ring in contact with the through hole is provided on the ventilation pipe, and a rubber pad is provided on a side of the convex ring close to the through hole.

[0014] By adopting the above technical solution, the ventilation plate and the ventilation pipe will vibrate during the rotation of the motor shaft. Due to the provision of the rubber pad, the vibration between the ventilation pipe and the compressor is reduced, part of the rigid impact is absorbed, and the stability of the device operation is guaranteed as much as possible.

[0015] Optionally, one end of the ventilation pipe away from the ventilation disk is connected to a hose, the other end of the hose is connected to an air storage bin, and the air storage bin is connected to the compressor.

[0016] By adopting the above technical solution, an air storage bin is connected to the outside of the compressor, and the gas generated by the compressor first passes through the air storage bin, and continues to transport the gas to the ventilation pipe after the air storage bin is full of gas. When the motor and the compressor stop running, the gas stored in the air storage bin can continue to transport the gas to the ventilation pipe, preventing the lubricating oil on the gear from flowing back along the motor shaft when the motor shaft stops rotating, thereby ensuring the operating reliability of the oil leakage prevention structure as much as possible.

[0017] Optionally, a gathering plate is provided on the ventilation disk, and the gathering plate is funnel-shaped, with an end of the gathering plate with a smaller diameter away from the ventilation disk, and an end of the gathering plate with a larger diameter fixedly connected to the ventilation disk.

[0018] By adopting the above technical solution, the vent holes on the vent plate are arranged along the direction of the motor shaft. At this time, the blown gas will diffuse in all directions. Under the action of the gathering plate, the possibility of gas diffusion in all directions can be reduced, the efficiency of gas blowing to the gap between the motor shaft and the compressor casing can be improved, and gas waste can be reduced.

[0019] Optionally, a movable plate is provided under the motor, a bearing platform is provided under the movable plate, a screw is provided on the bearing platform along the direction of the motor shaft, the movable plate is threadedly matched with the screw, and the movable plate is slidably matched with the bearing platform.

[0020] By adopting the above technical solution, the screw is rotated. Since the movable plate cooperates with the screw thread and the movable plate supporting platform contacts each other, the supporting platform limits the flipping of the movable plate, thereby realizing the movement of the movable plate along the motor shaft direction to adjust the distance between the motor and the compressor, avoid misalignment between the motor shaft and the gear as much as possible, and make the center of the through hole and the center axis of the docking column on the same straight line, which is conducive to the ventilation pipe connecting the compressor and the ventilation disk.

[0021] Optionally, an adjustment groove is provided on the side wall of the supporting platform, an adjustment hole is opened on the side wall of the movable plate, the inner thread of the adjustment hole is equipped with an adjustment bolt, the adjustment bolt passes through the adjustment groove, and the adjustment bolt is slidably matched with the adjustment groove.

[0022] By adopting the above technical solution, when the motor is moved to a suitable position, the adjusting bolt is rotated so that the adjusting bolt fits tightly with the adjusting slot. At this time, the position of the motor remains fixed to prevent the motor from moving out of position due to vibration in the working state.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the bearing, vent plate, vent pipe, vent hole and mounting pipe, the gas compressed by the compressor is transported to the vent assembly through the vent pipe, and the vent assembly blows to the gap between the motor shaft and the compressor to prevent the lubricating oil on the gear from flowing into the motor along the motor shaft and causing damage to the motor. The vent pipe plays a fixing role on the vent plate. When the motor shaft rotates, under the joint action of the bearing, the vent pipe prevents the vent plate from rotating with the shaft, and ensures that the vent plate normally transports gas to the motor shaft as much as possible.

[0025] 2. By setting up a movable plate, a bearing platform and a screw, and rotating the screw, due to the cooperation between the movable plate and the screw thread, the bearing platform limits the flipping of the movable plate, so as to realize the movement of the movable plate along the direction of the motor shaft, so as to adjust the distance between the motor and the compressor, avoid the misalignment between the motor shaft and the gear as much as possible, and make the center of the through hole and the central axis of the docking column on the same vertical line, which is conducive to the ventilation pipe connecting the compressor and the ventilation disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of this application.

[0027] Figure 2 It is a schematic diagram of the structure of the motor and the support platform in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the ventilation component in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the ventilation pipe structure in the embodiment of the present application.

[0030] Explanation of the accompanying reference numerals: 1. supporting platform; 2. placing groove; 3. screw; 4. movable plate; 5. motor; 6. adjusting plate; 7. adjusting groove; 8. adjusting hole; 9. adjusting bolt; 10. bearing; 11. vent plate; 12. vent hole; 13. docking column; 14. compressor; 15. connecting plate; 16. through hole; 17. gathering plate; 18. vent pipe; 19. convex ring; 20. rubber pad; 21. movable nut; 22. air storage bin; 23. hose. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses an oil leakage prevention structure for a compressor. Figure 1 and Figure 2An anti-oil leakage structure for a compressor includes a bearing platform 1, a placement groove 2 is provided in the bearing platform 1, a screw rod 3 is rotatably passed through the placement groove 2, and the screw rod 3 is arranged along the length direction of the bearing platform 1. One end of the screw rod 3 is rotatably connected to the side wall of the placement groove 2, and the other end of the screw rod 3 passes through the bearing platform 1. In order to facilitate rotation, the screw rod 3 outside the bearing platform 1 is partially set as a bare rod. A movable plate 4 is slidably provided on the bearing platform 1, and the movable plate 4 is threadedly matched with the screw rod 3. A motor 5 is fixedly provided on the movable plate 4, and the rotation axis direction of the motor 5 is consistent with the length direction of the screw rod 3.

[0033] Reference Figure 1 and Figure 2 A plurality of adjustment plates 6 are fixedly arranged on both sides of the bearing platform 1, and the plurality of adjustment plates 6 are symmetrically arranged. The plurality of adjustment plates 6 are provided with adjustment slots 7, and the adjustment slots 7 are strip-shaped. The side wall of the movable plate 4 is provided with a plurality of adjustment holes 8 arranged opposite to the plurality of adjustment slots 7, and the plurality of adjustment holes 8 are threadedly engaged with adjustment bolts 9, and the adjustment bolts 9 penetrate the adjustment slots 7, and the adjustment bolts 9 are slidably engaged with the adjustment slots 7, and the adjustment bolts 9 are threadedly engaged with the movable plate 4.

[0034] Reference Figure 1 and Figure 3 A ventilation component for ventilating the rotating shaft of the motor 5 is provided on the rotating shaft of the motor 5, and the ventilation component includes a bearing 10, and the bearing 10 is fixedly sleeved on the rotating shaft of the motor 5. A ventilation disk 11 is sleeved on the side of the bearing 10 away from the rotating shaft of the motor 5, and the ventilation disk 11 is fixedly connected to the bearing 10, and the inner side of the bearing 10 is fixedly connected to the rotating shaft of the motor 5. The ventilation disk 11 is hollow inside, and a plurality of ventilation holes 12 for ventilating the rotating shaft of the motor 5 are provided on the ventilation disk 11. The plurality of ventilation holes 12 are evenly arranged along the circumferential direction of the ventilation disk 11, and a docking column 13 is fixedly arranged above the ventilation disk 11, and a thread is arranged on the end of the docking column 13.

[0035] Reference Figure 1 and Figure 3 A compressor 14 is provided on one side of the motor 5. The rotating shaft of the motor 5 is inserted into the compressor 14, and a gap is provided between the rotating shaft of the motor 5 and the shell of the compressor 14. When working, a plurality of vents 12 will continuously ventilate toward the gap between the rotating shaft of the motor 5 and the shell of the compressor 14. A connecting plate 15 is fixedly provided on the upper edge of the compressor 14 close to the motor 5. A through hole 16 is provided on the connecting plate 15. The through hole 16 is located directly above the docking column 13, and the center line of the through hole 16 is on the same straight line as the center axis of the docking column 13. A gathering plate 17 is provided at the end of the vent disc 11 away from the motor 5. The gathering plate 17 is funnel-shaped. The end of the gathering plate 17 with a smaller diameter is away from the vent disc 11, and the end of the gathering plate 17 with a larger diameter is fixedly connected to the vent disc 11.

[0036] Reference Figure 1 , Figure 2and Figure 4 A vent pipe 18 is inserted into the through hole 16, and a convex ring 19 is provided on the vent pipe 18 to contact the through hole 16. A rubber pad 20 is provided on the side of the convex ring 19 close to the through hole 16, and the rubber pad 20 is tightly fitted with the connecting plate 15. One end of the vent pipe 18 is set as a threaded section, and one end of the vent pipe 18 is threadedly connected with a movable nut 21, and one end of the vent pipe 18 contacts the docking column 13. When installing the vent pipe 18, the movable nut 21 is rotated, and the movable nut 21 moves along the thread of the vent pipe 18 to the docking column 13, and the vent pipe 18 is threadedly connected with the docking column 13 through the movable nut 21.

[0037] Reference Figure 1 and Figure 4 One end of the compressor 14 is connected to an air storage bin 22 , and one end of the vent pipe 18 away from the vent plate 11 is connected to a hose 23 , and the other end of the hose 23 is connected to the air storage bin 22 . At this time, the compressor 14 is connected to the vent pipe 18 .

[0038] The implementation principle of the anti-leakage structure of the compressor 14 in the embodiment of the present application is as follows: when in use, it is generally necessary to fine-tune the position of the motor 5 so that the through hole 16 is located directly above the docking post 13, and ensure that the motor 5 is correctly meshed with the gear (not shown in the figure) inside the compressor 14. When installing the vent pipe 18, the vent pipe 18 and the docking post 13 are brought into contact with each other, and the movable nut 21 is rotated to move the movable nut 21 along the vent pipe 18 to the docking post 13. At this time, the movable nut 21 is threadedly connected with the vent pipe 18 and the docking post 13 to fix the vent pipe 18 to the docking post 13. When the motor 5 shaft rotates, due to the provision of the bearing 10 and under the fixing effect of the vent pipe 18, the vent disc 11 will not rotate with the motor 5 shaft. When the compressor 14 is working, the gas generated by the compressor 14 will enter the gas storage bin 22, and then flow through the hose 23 into the vent pipe 18 after passing through the gas storage bin 22. Then the gas will enter the vent plate 11, and ventilate from the vent hole 12 to the gap between the motor 5 shaft and the compressor 14 shell, preventing the lubricating oil of the gear from flowing into the motor 5 along the motor 5 shaft. In addition, due to the provision of the gas storage bin 22, after the compressor 14 stops operating for a certain period of time, the gas stored in the gas storage bin 22 can continue to transport gas to the vent pipe 18, preventing the lubricating oil from flowing back when the motor 5 shaft stops rotating.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil leakage prevention structure for a compressor, comprising a compressor (14), characterized in that: A motor (5) is provided at one end of the compressor (14), the rotating shaft of the motor (5) is inserted into the compressor (14), and a gap is provided between the rotating shaft of the motor (5) and the housing of the compressor (14); a ventilation pipe (18) is connected to one end of the compressor (14), a ventilation component for ventilating the rotating shaft of the motor (5) is provided on the rotating shaft of the motor (5), and the other end of the ventilation pipe (18) is connected to the ventilation component.

2. The oil leakage prevention structure for a compressor according to claim 1, characterized in that: The ventilation assembly comprises a bearing (10), wherein the bearing (10) is sleeved on the rotating shaft of the motor (5), and a ventilation plate (11) is sleeved on the side of the bearing (10) away from the rotating shaft of the motor (5), wherein the interior of the ventilation plate (11) is hollow, and the ventilation plate (11) is provided with a plurality of ventilation holes (12) for ventilating the rotating shaft of the motor (5), and the plurality of ventilation holes (12) are arranged toward the gap between the rotating shaft of the motor (5) and the housing of the compressor (14), and the ventilation pipe (18) is connected to the ventilation plate (11), and a connecting plate (15) is fixedly provided on the compressor (14), and a through hole (16) for passing the ventilation pipe (18) is opened on the connecting plate (15).

3. The oil leakage prevention structure for a compressor according to claim 2, characterized in that: The vent plate (11) is provided with a docking post (13) for connecting to a vent pipe (18); one end of the vent pipe (18) is provided with a threaded section; the threaded section of the vent pipe (18) is externally threadedly connected to a movable nut (21); the docking post (13) is threadedly matched with the movable nut (21).

4. The oil leakage prevention structure for a compressor according to claim 2, characterized in that: The ventilation pipe (18) is provided with a convex ring (19) in contact with the through hole (16), and a rubber pad (20) is provided on a side of the convex ring (19) close to the through hole (16).

5. The oil leakage prevention structure for a compressor according to claim 2, characterized in that: One end of the ventilation pipe (18) away from the ventilation disk (11) is connected to a hose (23), and the other end of the hose (23) is connected to an air storage bin (22), and the air storage bin (22) is connected to the compressor (14).

6. The oil leakage prevention structure for a compressor according to claim 2, characterized in that: The ventilation plate (11) is provided with a gathering plate (17), the gathering plate (17) is funnel-shaped, the end of the gathering plate (17) with a smaller diameter is away from the ventilation plate (11), and the end of the gathering plate (17) with a larger diameter is fixedly connected to the ventilation plate (11).

7. The oil leakage prevention structure for a compressor according to claim 1, characterized in that: A movable plate (4) is provided below the motor (5), a bearing platform (1) is provided below the movable plate (4), a screw rod (3) is provided on the bearing platform (1) along the rotation axis direction of the motor (5), the movable plate (4) and the screw rod (3) are threadedly matched, and the movable plate (4) and the bearing platform (1) are slidably matched.

8. The oil leakage prevention structure for a compressor according to claim 7, characterized in that: An adjustment groove (7) is provided on the side wall of the supporting platform (1), and an adjustment hole (8) is opened on the side wall of the movable plate (4). The internal thread of the adjustment hole (8) is matched with an adjustment bolt (9), and the adjustment bolt (9) passes through the adjustment groove (7). The adjustment bolt (9) is slidably matched with the adjustment groove (7).

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