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Title:
AIR CONDITIONER AND OIL RETURN CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/000634
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of air conditioners, and in particular, to an air conditioner and an oil return control method therefor. The present invention aims to solve the problem that the oil return manner of the existing air conditioners causes the exhaust temperature of a compressor to be too high. The air conditioner of the present invention comprises a compressor, a heat exchanger, and an oil separator; a first oil return branch and a second oil return branch are provided in parallel between a gas inlet of the compressor and an oil outlet of the oil separator; and the first oil return branch directly connects the gas inlet of the compressor to the oil outlet of the oil separator, and the second oil return branch connects the gas inlet of the compressor to the oil outlet of the oil separator after flowing near the heat exchanger. The oil return control method of the present invention comprises: acquiring an outdoor ambient temperature; and according to the outdoor ambient temperature, selectively connecting the first oil return branch or the second oil return branch, so as to adaptively change the oil return temperature of lubricating oil, so that the return temperature of the lubricating oil can always match the exhaust temperature required by the compressor.

Inventors:
REN SHANJUN (CN)
YUAN YIZHONG (CN)
ZHENG GUOQIANG (CN)
LI QINGHUI (CN)
WANG HONGWEI (CN)
Application Number:
PCT/CN2020/085665
Publication Date:
January 07, 2021
Filing Date:
April 20, 2020
Export Citation:
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Assignee:
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F24F11/64; F24F11/89; F25B9/08; F25B41/00; F25B43/00; F24F110/12
Domestic Patent References:
WO2018073855A12018-04-26
Foreign References:
JP2011047525A2011-03-10
CN110440402A2019-11-12
CN108662815A2018-10-16
CN109307385A2019-02-05
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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