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Air conditioner oil return system, method and air conditioner

An oil return system, air conditioner technology, applied in refrigeration safety arrangements, refrigerators, lighting and heating equipment, etc., to achieve the effect of improving the heat exchange effect of the system

Active Publication Date: 2020-04-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides an air conditioner oil return system, method and air conditioner to at least solve the problem in the related art that the oil return temperature is too high during the oil return process of the air conditioner and affects the heat exchange effect of the system

Method used

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  • Air conditioner oil return system, method and air conditioner
  • Air conditioner oil return system, method and air conditioner

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Embodiment 1

[0020] This embodiment provides an air conditioner oil return system, the air conditioner oil return system mainly includes the following components:

[0021] An oil separator, an oil return pipeline, and a controller, wherein the inlet of the oil separator is connected to the exhaust port of the compressor in the air conditioner, and is used to receive the oil-air mixture discharged from the compressor connected to it, and transfer the oil-air mixture Separation; the oil return pipeline is used to deliver the oil separated by the oil separator to the compressor in the air conditioner, which can be any one of the multiple compressors in the air conditioner system; the controller is used to return the oil in the air conditioner During operation, the air supply flow rate in the air supply circuit of the compressor is adjusted according to the air supply superheat of the compressor in the air conditioner, so as to reduce the oil return temperature of the air conditioner.

[0022]...

Embodiment 2

[0029] This embodiment provides an air conditioner oil return method, which can be executed by the air conditioner provided in Embodiment 1 above, figure 2 is the flowchart of the method, such as figure 2 As shown, the method includes the following processing:

[0030] Step 201: When the air conditioner is in oil return operation, obtain the superheat degree of the compressor in the air conditioner;

[0031] Wherein, the method for obtaining the superheat degree of the supplementary air of the compressor in the air conditioner has been introduced in the above-mentioned embodiment 1, and will not be repeated here.

[0032] Step 202: Adjust the air supply flow in the air supply circuit of the compressor according to the air supply superheat of the compressor, so as to reduce the oil return temperature of the air conditioner.

[0033] In this embodiment, the operation of adjusting the supplementary air flow in the supplementary air circuit of the compressor according to the s...

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Abstract

The invention discloses an air conditioner oil return system, a method and an air conditioner. The problem that because the oil return temperature is too high in the oil return process of the air conditioner in the related art, the heat exchange effect of the system is influenced is solved. The air conditioner oil return system comprises a first oil separator, a first oil return pipeline and a controller, wherein an inlet of the first oil separator is connected with an exhaust port end of a compressor in the air conditioner, and the first oil separator is used for receiving oil-gas mixture discharged by the compressor connected with the first oil separator and separating the oil-gas mixture. The oil return pipeline is used for conveying the oil separated by the first oil separator to a compressor in the air conditioner. The controller is used for controlling the air conditioner to run when the air conditioner returns oil, and the air supplementing flow of the air supplementing loop ofthe compressor is adjusted according to the air supplementing superheat degree of the compressor in the air conditioner, so that the oil return temperature of the air conditioner is reduced. Accordingto the system and the method, the problem that because the system oil return temperature is too high, the system heat exchange effect is influenced is solved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an oil return system and method for an air conditioner and an air conditioner. Background technique [0002] Compressor lubricating oil is a substance that lubricates the moving parts of the compressor. It is soluble in the refrigerant and flows in the air conditioning system with the refrigerant. During the operation of the air conditioner, the lubrication in the compressor will enter the heat exchanger with the refrigerant and partly remain in the heat exchanger, which may cause the lack of lubricating oil in the compressor, causing the compressor motor bearing and the compression chamber to be out of order. To effective lubrication, affect the performance and reliability of the compressor, or even burn the compressor. Therefore, during the operation of the air conditioner, it is usually necessary to separate the lubricating oil from the refrigerant through the oil re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B31/00F25B49/02
CPCF25B31/004F25B49/022
Inventor 曹巍林海佳尚瑞
Owner GREE ELECTRIC APPLIANCES INC
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