Oil storage structure, horizontal scroll compressor and air conditioner

Abstract

The present invention provides an oil storage structure, a horizontal scroll compressor and an air conditioner. The oil storage structure includes: an oil storage chamber, wherein lubricating oil is stored in the oil storage chamber, and the lubricating oil is collected into an oil pool in the oil storage chamber. The oil storage chamber is isolated from the motor assembly of the compressor, and the oil storage chamber can supply oil to the central oil hole of the crankshaft; an oil return pipe, wherein one end of the oil return pipe is connected to the oil storage chamber, and the other end is connected to the lubrication part of the compressor. The lubricating oil supplied from the central oil hole to the lubrication part returns to the oil storage chamber through the oil return pipe after the lubrication work is completed. The oil storage structure of the present invention prevents the lubricating oil from directly contacting the motor rotor. When the compressor is running, the rotor will not stir the lubricating oil over a large area, thereby improving the supply stability of the lubricating oil. At the same time, the lubricating oil forms an oil pool with a certain oil level in the oil storage chamber, and the oil pool has a stable liquid level. The oil pool is closer to the central oil hole of the crankshaft, and can ensure that sufficient lubricating oil is provided to lubricate each friction pair in the compressor system.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to an oil storage structure, a horizontal scroll compressor and an air conditioner. Background Art

[0002] During the operation of the horizontal scroll compressor, due to its placement, a large amount of lubricating oil is spread flat on the bottom of the compressor, and a part of the rotor will be immersed in the lubricating oil. During the rotation of the rotor, a large amount of the lubricating oil will be stirred, causing it to splash in the compressor casing, affecting the stable supply of the lubricating oil. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is that the lubricating oil in the scroll compressor cannot be stably supplied, thereby providing an oil storage structure, a horizontal scroll compressor and an air conditioner.

[0004] In order to solve the above problems, the present invention provides an oil storage structure, comprising:

[0005] An oil storage chamber, wherein lubricating oil is stored in the oil storage chamber, and the lubricating oil is collected into an oil pool in the oil storage chamber. The oil storage chamber is isolated from the motor assembly of the compressor, and the oil storage chamber can supply oil to the central oil hole of the crankshaft member;

[0006] The oil return pipe has one end connected to the oil storage chamber and the other end connected to the lubrication part of the compressor. The lubricating oil supplied to the lubrication part by the central oil hole returns to the oil storage chamber through the oil return pipe after completing the lubrication work.

[0007] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0008] Preferably, an oil pump device is provided at the end of the crankshaft away from the scroll assembly, and the oil pump device is used to extract lubricating oil from the oil pool of the oil storage chamber and inject it into the central oil hole.

[0009] Preferably, the oil pump device is provided with an oil supply pipe, and the end of the oil supply pipe extends below the liquid level of the oil pool in the oil storage cavity.

[0010] Preferably, the oil storage structure also includes an air suction oil separation chamber, which is provided with an air suction port. The refrigerant sucked into the compressor first enters the air suction oil separation chamber through the air suction port for oil and gas separation and then is discharged into the compressor. The lubricating oil separated in the air suction oil separation chamber flows to the oil storage chamber.

[0011] Preferably, an oil separator is provided in the air suction oil separation chamber, and the oil separator is provided with an air outlet.

[0012] Preferably, the oil storage structure is further provided with an air suction chamber, the air suction chamber is separated from the oil storage chamber by an oil-gas separation plate, and the air suction chamber is communicated with the air outlet.

[0013] Preferably, the oil storage structure further includes a first shell and a second shell, the first shell is concave, and the oil storage chamber is arranged between the first shell and the second shell.

[0014] Preferably, the second shell is provided with a mounting hole, one end of the crankshaft is installed in the mounting hole, the end of the crankshaft passes through the second shell, and / or, a compression air inlet is provided on the second shell, and the refrigerant in the suction chamber enters the compressor through the compression air inlet.

[0015] Preferably, the air-intake oil separation chamber is surrounded by a first partition member and an inner wall of the first shell, the first partition member is integrally formed on the inner wall of the first shell, and / or the oil-gas separation plate is integrally formed on the inner wall of the first shell.

[0016] Preferably, the vertical height of the oil return pipe decreases gradually from the lubrication portion toward the oil storage chamber.

[0017] Preferably, a groove is provided on the inner wall of the compressor shell, and the oil return pipe is arranged in the groove.

[0018] A horizontal scroll compressor adopts any of the above oil storage structures.

[0019] An air conditioner adopts any one of the above oil storage structures.

[0020] The oil storage structure, horizontal scroll compressor and air conditioner provided by the present invention have at least the following beneficial effects:

[0021] The oil storage structure of the present invention can centrally store the lubricating oil of the compressor, and prevent the lubricating oil from directly contacting the motor rotor. When the compressor is running, the rotor will not stir the lubricating oil over a large area, thereby improving the stability of the lubricating oil supply. At the same time, the lubricating oil forms an oil pool with a certain oil level height in the oil storage cavity. The oil pool has a stable liquid level, and the oil pool is closer to the central oil hole of the crankshaft, which can ensure that sufficient lubricating oil is provided to lubricate each friction pair in the compressor system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of an oil storage structure according to an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of an oil separator according to an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a first shell according to an embodiment of the present invention;

[0025] Figure 4 It is a partial structural schematic diagram of the second shell according to an embodiment of the present invention.

[0026] The reference numerals are as follows:

[0027] 1. Oil storage chamber; 2. Oil pool; 3. Motor assembly; 4. Crankshaft; 5. Center oil hole; 6. Oil return pipe; 7. Lubrication part; 8. Scroll assembly; 9. Oil pump device; 10. Oil supply pipe; 11. Intake oil separation chamber; 12. Intake port; 13. Oil separator; 14. Air outlet; 15. Oil outlet; 16. Intake chamber; 17. Oil-gas separation plate; 18. First shell; 19. Second shell; 20. Mounting hole; 21. Groove; 22. Compression air inlet; 23. First partition member; 24. Upper bracket oil hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Combination Figures 1 to 4 As shown, an embodiment of the present invention provides an oil storage structure, including: an oil storage chamber 1, in which lubricating oil is stored, and the lubricating oil is collected into an oil pool 2 in the oil storage chamber 1, the oil storage chamber 1 is isolated from the motor assembly 3 of the compressor, and the oil storage chamber 1 can supply oil to the central oil hole 5 of the crankshaft 4; an oil return pipe 6, one end of the oil return pipe 6 is connected to the oil storage chamber 1, and the other end is connected to the lubrication part 7 of the compressor, and the lubricating oil supplied from the central oil hole 5 to the lubrication part 7 completes the lubrication work, and then flows back to the oil storage chamber 1 through the oil return pipe 6.

[0030] The oil storage structure provided in the embodiment of the present invention can centrally store the lubricating oil of the compressor and prevent the lubricating oil from directly contacting the motor rotor. When the compressor is running, the rotor will not stir the lubricating oil over a large area, thereby improving the stability of the lubricating oil supply. At the same time, the lubricating oil forms an oil pool with a certain oil level height in the oil storage chamber 1. The oil pool has a stable liquid level and is closer to the center oil hole of the crankshaft, thereby ensuring that sufficient lubricating oil is provided to lubricate each friction pair in the compressor system.

[0031] The lubrication part 7 of the embodiment of the present invention mainly includes the main bearing, auxiliary bearing and scroll assembly 8 of the crankshaft 4 and other parts that need lubrication. The central oil hole 5 and the oil return pipe 6 form a complete lubricating oil circulation loop, and the lubricating oil is not exposed in the chamber where the motor assembly 3 is located. There is basically no or very little lubricating oil in the rotor part of the motor assembly 3, and the technical problems in the prior art will no longer occur. In order to prevent the lubricated oil from flowing into the oil storage chamber 1, the main bearing and the auxiliary bearing side are sealed with a shaft seal structure.

[0032] In order to ensure the smooth oil return of the lubricating part 7, an upper bracket oil hole 24 is opened in the upper bracket, and the lubricating oil that has completed lubrication is introduced into the oil return pipe 6 through the upper bracket oil hole 24 and flows back to the oil storage chamber 1 through the oil return pipe 6.

[0033] Preferably, in order to ensure that the crankshaft 4 can smoothly absorb lubricating oil, an oil pump device 9 is provided at the end of the crankshaft 4 away from the scroll assembly 8. The oil pump device 9 is used to extract lubricating oil from the oil pool 2 of the oil storage chamber 1 and inject it into the central oil hole 5.

[0034] Preferably, and considering that the lubricating oil level in the oil pool 2 may not reach the inlet of the oil pump device 9, the oil pump device 9 is provided with an oil supply pipe 10, the end of which extends below the liquid level of the oil pool 2 in the oil storage chamber 1, to ensure that the oil pump device 9 obtains a sufficient amount of oil.

[0035] Considering that part of the lubricating oil is mixed in the refrigerant sucked by the compressor, this part of the lubricating oil will reduce the refrigeration efficiency of the refrigerant. Therefore, the oil storage structure of this embodiment also includes an air suction oil separation chamber 11, and the air suction oil separation chamber 11 is provided with an air suction port 12. The refrigerant sucked by the compressor first enters the air suction oil separation chamber 11 through the air suction port 12 for oil and gas separation, and then is sucked into the compressor pump body to complete the compression. The lubricating oil separated by the air suction oil separation chamber 11 flows to the oil storage chamber 1. Specifically, an oil separator 13 is provided in the air suction oil separation chamber 11, and the oil separator 13 is provided with an air outlet 14 and an oil outlet 15.

[0036] Preferably, after the refrigerant flowing through the oil separator 13 is successfully separated from the oil and gas, it is ensured as much as possible that the gaseous refrigerant does not contact the lubricating oil. Therefore, the oil storage structure is also provided with an air suction chamber 16, and the air suction chamber 16 is separated from the oil storage chamber 1 by an oil-gas separation plate 17, and the air suction chamber 16 is communicated with the air outlet 14.

[0037] Preferably, considering the structure of the existing horizontal scroll compressor, in order to minimize the structural change of the horizontal scroll compressor, the oil storage structure also includes a first shell 18 and a second shell 19, the first shell 18 is concave, the oil storage chamber 1 is arranged between the first shell 18 and the second shell 19, the second shell 19 is provided with a mounting hole 20, one end of the crankshaft 4 is mounted in the mounting hole 20, and the end of the crankshaft 4 passes through the second shell 19. The second shell 19 is actually improved on the basis of the original end cover of the compressor.

[0038] Preferably, the air-intake oil separation chamber is surrounded by the first partition member 23 and the inner wall of the first shell 18, the first partition member 23 is integrally formed on the inner wall of the first shell 18, and / or the oil-gas separation plate 17 is integrally formed on the inner wall of the first shell 18. A concave first shell 18 is added to the outer side of the compressor end cover, which is buckled on the second shell 19 to form a closed chamber, and then the chamber is divided into three parts by the first partition member 23 and the oil-gas separation plate 17, namely, the air-intake oil separation chamber 11, the air intake cavity 16, and the oil storage cavity 1.

[0039] Preferably, in order to improve the oil return effect, the vertical height of the oil return pipe 6 decreases from the lubrication portion 7 toward the oil storage chamber 1, that is, the oil return pipe 6 is placed at a certain tilt angle at the bottom of the compressor housing. Considering the processability, a groove 21 with a tilt angle can be opened at a corresponding position at the bottom of the housing, and the oil return pipe 6 is placed in the groove 21. In order to ensure an effective oil return effect, at least one oil return pipe 6 can be provided, and preferably multiple oil return pipes can be provided.

[0040] When the compressor is running, the lubricating oil in the oil pool 2 is introduced into the central oil hole 5 of the crankshaft 4 under the action of the oil pump device 9, and then flows along the hole to the moving parts to complete their lubrication. In order to prevent the lubricating oil from falling to the bottom of the compressor under the action of gravity during the lubrication process, a shaft seal structure is used in both the secondary journal and the main journal. The part where the inner ring of the shaft seal contacts the crankshaft is sealed with a wear-resistant material PTFE to prevent friction between the shaft seal and the crankshaft surface.

[0041] A horizontal scroll compressor adopts any of the above oil storage structures.

[0042] An air conditioner adopts any one of the above oil storage structures.

[0043] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An oil storage structure, characterized in that: include: An oil storage chamber (1), wherein lubricating oil is stored in the oil storage chamber (1), and the lubricating oil is collected in the oil storage chamber (1) to form an oil pool (2). The oil storage chamber (1) is isolated from a motor component (3) of the compressor, and the oil storage chamber (1) is capable of supplying oil to a central oil hole (5) of a crankshaft component (4); an oil return pipe (6), one end of the oil return pipe (6) being connected to the oil storage chamber (1), and the other end of the oil return pipe (6) being connected to a lubrication part (7) of the compressor; the lubrication oil supplied from the central oil hole (5) to the lubrication part (7) flows back to the oil storage chamber (1) through the oil return pipe (6) after completing the lubrication work; The oil storage structure further comprises an air suction oil separation chamber (11), wherein the air suction oil separation chamber (11) is provided with an air suction port (12), and the refrigerant sucked into the compressor first enters the air suction oil separation chamber (11) through the air suction port (12) for oil and gas separation, and then is discharged into the compressor, and the lubricating oil separated by the air suction oil separation chamber (11) flows into the oil storage chamber (1); An oil separator (13) is provided in the air suction oil separation chamber (11), and the oil separator (13) is provided with an air outlet (14); The oil storage structure further comprises a first shell (18) and a second shell (19); the first shell (18) is concave; the oil storage chamber (1) is arranged between the first shell (18) and the second shell (19); the second shell (19) is provided with a mounting hole (20); one end of the crankshaft component (4) is mounted in the mounting hole (20); the end of the crankshaft component (4) passes through the second shell (19); a compression air inlet is provided on the second shell (19); the oil storage structure further comprises an air suction chamber (16); the refrigerant in the air suction chamber (16) enters the compressor through the compression air inlet.

2. The oil storage structure according to claim 1, characterized in that: An oil pump device (9) is provided at the end of the crankshaft member (4) away from the scroll assembly (8), and the oil pump device (9) is used to extract lubricating oil from the oil pool (2) of the oil storage chamber (1) and inject it into the central oil hole (5).

3. The oil storage structure according to claim 2, characterized in that: The oil pump device (9) is provided with an oil supply pipe (10), the end of which extends below the liquid level of the oil pool (2) in the oil storage chamber (1).

4. The oil storage structure according to claim 1, characterized in that: The air intake chamber (16) is separated from the oil storage chamber (1) by an oil-gas separation plate (17), and the air intake chamber (16) is in communication with the air outlet (14).

5. The oil storage structure according to claim 4, characterized in that: The air-intake oil separation chamber (11) is surrounded by a first partition member and an inner wall of the first shell (18), the first partition member is integrally formed on the inner wall of the first shell (18), and / or the oil-gas separation plate (17) is integrally formed on the inner wall of the first shell (18).

6. The oil storage structure according to any one of claims 1 to 5, characterized in that: The vertical height of the oil return pipe (6) decreases gradually from the lubrication portion (7) toward the oil storage chamber (1), and / or there is at least one oil return pipe (6).

7. The oil storage structure according to claim 6, characterized in that: A groove (21) is provided on the inner wall of the compressor shell, and the oil return pipe (6) is arranged in the groove (21).

8. A horizontal scroll compressor, characterized in that: The oil storage structure according to any one of claims 1 to 7 is adopted.

9. An air conditioner, characterized in that: The oil storage structure according to any one of claims 1 to 7 is adopted.

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