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Title:
AIR CONDITIONING HEAT PUMP SYSTEM AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/200951
Kind Code:
A1
Abstract:
Provided are an air conditioning heat pump system and a control method, comprising a heat exchange circulation pipeline, an enthalpy-increasing pipeline, an air supplement pipeline and a liquid spraying pipeline, wherein, the heat exchange circulation pipeline comprises a compressor, a four-way valve, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, and one end of the enthalpy-increasing pipeline communicates with an air supplement port of the compressor. By arranging the enthalpy-increasing pipeline, normal operation can be ensured when the air conditioning heat pump system is at a lower ambient temperature, and the refrigerant mass circulation quantity of the compressor is increased at the same rotation speed, so that a compressor motor is better cooled, and the exhaust temperature is reduced. The pressure at the end of compression of the compressor can be increased by arranging the air supplement pipeline and the liquid spraying pipeline, and the system pressure ratio can be further increased; and meanwhile, part of refrigerant liquid enters the compressor through a liquid spraying valve, the refrigerant circulation quantity is increased, a suction superheat degree of the compressor is reduced, and an exhaust superheat degree is also reduced.

Inventors:
LIU, Hua (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
ZHANG, Shiqiang (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
JIAO, Huachao (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
XIONG, Jianguo (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
WU, Lianfa (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
Application Number:
CN2018/121538
Publication Date:
October 24, 2019
Filing Date:
December 17, 2018
Export Citation:
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Assignee:
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
International Classes:
F25B41/06; F24F5/00; F25B13/00; F25B41/04
Domestic Patent References:
WO2017024865A12017-02-16
Foreign References:
CN208075218U2018-11-09
CN108592463A2018-09-28
CN201964701U2011-09-07
CN104976813A2015-10-14
CN107477916A2017-12-15
CN101769657A2010-07-07
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (Room B-1605, Caizhi International Building No.18 Zhongguancun East Roa, Haidian District Beijing 3, 100083, CN)
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