CN-224215610-U - Oil collector, oil return device and air conditioning system

Abstract

The application relates to an oil collector, an oil return device and an air conditioning system, wherein the oil return device comprises an oil collector, the oil collector comprises a shell, a gas dispersing piece and a gas guide piece, a first accommodating cavity with one end open is arranged, a liquid refrigerant is arranged in the first accommodating cavity, the opening is communicated with a condenser, the gas dispersing piece is arranged in the first accommodating cavity and is arranged below the liquid surface of the liquid refrigerant in the first accommodating cavity, one end of the gas guide piece is communicated with an exhaust port of a compressor, the other end of the gas guide piece extends into the first accommodating cavity and is connected with the gas dispersing piece, and lubricating oil in the rich gaseous refrigerant can be dissolved in the liquid refrigerant to form the rich liquid refrigerant. The oil collector can timely and effectively recycle lubricating oil in the exhaust of the compressor, and can also prevent the lubricating oil from flowing into a refrigerant circulation loop of the air conditioning system in a large amount, thereby ensuring the performance stability of the air conditioning system.

Inventors

• HUA CHAO
• ZHOU TANG
• ZHOU YU

Assignees

• 珠海格力电器股份有限公司

Dates

Publication Date

20260508

Application Date

20250523

Claims (16)

1. 1. An oil collector disposed on an air conditioning system, the air conditioning system comprising a compressor and a condenser, the oil collector comprising: the shell is provided with a first accommodating cavity with one end open, liquid refrigerant is arranged in the first accommodating cavity, and the opening is communicated with the condenser; A gas dispersing member arranged below the liquid surface of the liquid refrigerant in the first accommodating cavity, and The other end of the air guide piece stretches into the first accommodating cavity and is connected with the air dispersing piece, and the air guide piece is used for introducing the oil-rich gaseous refrigerant discharged by the compressor into the air dispersing piece; Wherein the lubricating oil in the oil-rich gaseous refrigerant is capable of dissolving in the liquid refrigerant to form an oil-rich liquid refrigerant.
2. 2. The oil collector of claim 1, wherein the condenser is provided with a second inlet and a second receiving chamber, the housing is disposed in the second receiving chamber, and the air guide is embedded in the second inlet.
3. 3. An oil collector according to claim 1 or 2, wherein the air dispersing member is a porous mesh member, and a plurality of first vent holes are provided on the surface and inside of the porous mesh member, and the plurality of first vent holes are communicated with each other.
4. 4. The oil collector according to claim 1 or 2, wherein the housing comprises a bottom plate and a side plate which are connected, the bottom plate and the side plate are surrounded to form the first accommodating cavity, the liquid level of the liquid refrigerant of the housing divides the first accommodating cavity into an oil collecting area and an anti-overflow area, and the anti-overflow area is used for blocking the liquid refrigerant splashed when the air dispersing member exhausts.
5. 5. The oil collector of claim 4 wherein the spill-resistant zone has a first height and the oil collection zone has a second height, the ratio of the first height to the second height being 1/4-1/2.
6. 6. The oil collector of claim 4, comprising a baffle plate covering the opening, the baffle plate being removably connected to the side plate, the baffle plate being provided with a second vent hole.
7. 7. The oil collector of claim 2, wherein the housing is provided with a first inlet communicating with the first receiving chamber, the condenser is provided with a second outlet, and the first inlet communicates with the second outlet through a first conduit.
8. 8. The oil collector of claim 7, wherein the first line is provided with a check valve for preventing a reverse flow of the liquid refrigerant of the first receiving chamber into the first line.
9. 9. The oil collector of claim 7, wherein the first line is provided with a drive pump to drive liquid refrigerant of the second receiving chamber into the first receiving chamber via the first line.
10. 10. An oil return device comprising an oil collector as claimed in any one of claims 1 to 9.
11. 11. The oil return apparatus according to claim 10, wherein the oil return apparatus includes an oil separator connected to the oil collector, the oil separator being configured to separate lubricating oil in the oil-rich liquid refrigerant from refrigerant.
12. 12. The oil return device according to claim 11, characterized in that the housing is provided with a first outlet communicating with the first accommodation chamber, the oil separator is provided with a third inlet, the first outlet communicates with the third inlet through a second pipe, the second pipe is provided with a first control valve.
13. 13. The oil return device according to claim 11, wherein a heating member for heating the oil-rich liquid refrigerant is provided in the oil separator, the oil separator is provided with a third outlet, the third outlet is communicated with the air suction port of the compressor through a third pipeline, and a third control valve is provided on the third pipeline.
14. 14. The oil return device according to claim 11, characterized in that the air conditioning system comprises an oil tank connected to the compressor, the oil separator being provided with a fourth outlet, which communicates with the oil tank via a fourth line, the fourth line being provided with a second control valve.
15. 15. The oil return device according to claim 11, characterized in that the oil separator is provided with a fourth inlet, which communicates with the condenser via a fifth line, on which a fourth control valve is provided.
16. 16. An air conditioning system, comprising: A compressor; condenser, and An oil collector as claimed in any one of claims 1 to 9, or an oil return device as claimed in any one of claims 10 to 15.

Description

Oil collector, oil return device and air conditioning system Technical Field The application relates to the technical field of compressor oil return, in particular to an oil collector, an oil return device and an air conditioning system. Background At present, when the compressor operates, the bearing needs to be lubricated and cooled, and the lubricating oil can effectively lubricate and cool the bearing, but in the centrifugal compressor, the bearing impeller cavity and the motor cavity are difficult to be completely and independently sealed due to structural reasons. In the related art, when lubricating oil is lubricated, the lubricating oil pumped by the oil pump has a certain pressure. When the impeller of the compressor rotates, the periphery of the impeller is at high pressure and the center of the impeller shaft is at low pressure under the centrifugal action, so that lubricating oil with certain pressure can run from the sealing position of the comb teeth of the bearing to the low pressure area in the center of the impeller shaft, and then the lubricating oil is thrown out under the centrifugal action of the impeller, and is discharged into the condenser along with refrigerant gas compressed by the compressor to the exhaust port of the compressor. The refrigerant in the condenser affects heat exchange due to the mixing of lubricating oil, thereby affecting the performance stability of the air conditioning system. Disclosure of utility model The application provides an oil collector, an oil return device and an air conditioning system, which are used for solving the technical problem that in the prior art, the heat exchange is affected by the refrigerant in a condenser due to the fact that lubricating oil is mixed in the refrigerant, and further the performance stability of the air conditioning system is affected. In a first aspect, the present application provides an oil collector provided on an air conditioning system including a compressor and a condenser, the oil collector comprising: the shell is provided with a first accommodating cavity with one end open, liquid refrigerant is arranged in the first accommodating cavity, and the opening is communicated with the condenser; A gas dispersing member arranged below the liquid surface of the liquid refrigerant in the first accommodating cavity, and The other end of the air guide piece stretches into the first accommodating cavity and is connected with the air dispersing piece, and the air guide piece is used for introducing the oil-rich gaseous refrigerant discharged by the compressor into the air dispersing piece; Wherein the lubricating oil in the oil-rich gaseous refrigerant is capable of dissolving in the liquid refrigerant to form an oil-rich liquid refrigerant. In one possible embodiment, the condenser is provided with a second inlet and a second accommodating cavity, the shell is arranged in the second accommodating cavity, and the air guide piece is embedded at the second inlet. In one possible embodiment, the air dispersing piece is a porous net-shaped member, and a plurality of first ventilation holes are formed in the surface and the inside of the porous net-shaped member, and the first ventilation holes are communicated with each other. In one possible implementation manner, the shell comprises a bottom plate and a side plate which are connected, the bottom plate and the side plate are surrounded to form the first accommodating cavity, the liquid level of the liquid refrigerant of the shell divides the first accommodating cavity into an oil collecting area and an anti-overflow area, and the anti-overflow area is used for blocking the liquid refrigerant splashed when the air dispersing piece exhausts. In one possible embodiment, the spill-resistant zone has a first height and the oil collection zone has a second height, the ratio of the first height to the second height being 1/4-1/2. In one possible embodiment, the oil collector comprises a baffle plate covering the opening, the baffle plate being detachably connected to the side plate, the baffle plate being provided with a second ventilation hole. In a possible embodiment, the housing is provided with a first inlet communicating with the first receiving chamber, the condenser is provided with a second outlet, and the first inlet communicates with the second outlet through a first pipe. In one possible embodiment, the first line is provided with a check valve for preventing the liquid refrigerant of the first receiving chamber from flowing back into the first line. In one possible embodiment, the first line is provided with a drive pump to drive the liquid refrigerant of the second receiving chamber to flow into the first receiving chamber via the first line. In a second aspect, the present application provides an oil return apparatus comprising an oil collector as hereinbefore described. In one possible embodiment, the oil return device comprises an oil separator connected to the oil c