Title:
OIL RETURN CONTROL METHOD AND DEVICE, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2024/007676
Kind Code:
A1
Abstract:
Disclosed in the present disclosure are an oil return control method and device, and an air conditioner. The method comprises: at a current compressor operation frequency, adjusting an oil amount regulating component on an oil return pipe to a first opening degree, and maintaining operating for a first duration at the first opening degree, so that the oil level in a compressor reaches a maximum safe oil level; lowering the oil amount regulating component to a second opening degree, so that the oil discharge amount of the compressor is equal to the oil return amount of the compressor; and determining an optimal opening degree according to the heat exchange capability of an air conditioner, and controlling the oil amount regulating component to continuously operate according to the optimal opening degree. According to the present disclosure, reliable oil return is ensured by means of the first opening degree and the first duration, and the reliability of the compressor is ensured; on the basis that the oil discharge amount of the compressor is balanced with the oil return amount of the compressor, the oil amount regulating component is optimally controlled for less oil return, so as to seek an optimal opening degree with better capability and higher energy efficiency, so that the capability and the energy efficiency under a reliable oil return condition are further improved, optimal capability and optimal energy efficiency can be achieved, and reliable operation of the compressor can be ensured.
Inventors:
ZHANG SHIQIANG (CN)
CHEN MIN (CN)
CHEN MIN (CN)
Application Number:
PCT/CN2023/088752
Publication Date:
January 11, 2024
Filing Date:
April 17, 2023
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F25B31/00; F24F11/86; F25B1/00; F25B41/20; F25B49/02
Foreign References:
| CN115200264A | 2022-10-18 | |||
| CN113639478A | 2021-11-12 | |||
| CN111426040A | 2020-07-17 | |||
| CN109612160A | 2019-04-12 | |||
| CN109282524A | 2019-01-29 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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