US 11,739,991 B2
Air conditioning system and control method for air conditioning system
Shiqiang Zhang, Zhuhai (CN); Lianfa Wu, Zhuhai (CN); Limin Li, Zhuhai (CN); Huachao Jiao, Zhuhai (CN); Bing Zhou, Zhuhai (CN); Peng Cao, Zhuhai (CN); and Tao Feng, Zhuhai (CN)
Assigned to GREE ELECTRIC APPLIANCES (WUHAN) CO., LTD, Wuhan (CN); and GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Appl. No. 17/46,291
Filed by GREE ELECTRIC APPLIANCES (WUHAN) CO., LTD, Wuhan (CN); and GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
PCT Filed Aug. 28, 2018, PCT No. PCT/CN2018/102711
§ 371(c)(1), (2) Date Oct. 8, 2020,
PCT Pub. No. WO2019/196311, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 201810312592.9 (CN), filed on Apr. 9, 2018.
Prior Publication US 2021/0080137 A1, Mar. 18, 2021
Int. Cl. F25B 13/00 (2006.01); F24F 11/84 (2018.01); F24F 11/86 (2018.01); F24F 11/30 (2018.01); F24F 1/0068 (2019.01); F24F 1/32 (2011.01); F24F 1/48 (2011.01); F25B 29/00 (2006.01); F25B 49/02 (2006.01); F25B 41/20 (2021.01); F24F 140/00 (2018.01)
CPC F25B 13/00 (2013.01) [F24F 1/0068 (2019.02); F24F 1/32 (2013.01); F24F 1/48 (2013.01); F24F 11/30 (2018.01); F24F 11/84 (2018.01); F24F 11/86 (2018.01); F25B 29/003 (2013.01); F25B 41/20 (2021.01); F25B 49/02 (2013.01); F24F 2140/00 (2018.01); F25B 2313/0231 (2013.01); F25B 2313/0253 (2013.01); F25B 2313/02742 (2013.01); F25B 2600/2501 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air conditioning system, comprising a compressor, two outdoor heat exchange units, a liquid pipe, a high-pressure gas pipe being in communication with an exhaust port of the compressor, a low-pressure gas pipe being in communication with an intake port of the compressor, and a valve assembly;
wherein one outdoor heat exchange unit has a first state; in the first state, one end of the one outdoor heat exchange unit is in communication with the high-pressure gas pipe, and another end thereof is in communication with the liquid pipe;
the one outdoor heat exchange unit has a second state; in the second state, the one end of the one outdoor heat exchange unit is in communication with the low-pressure gas pipe, and the other end thereof is in communication with the liquid pipe;
another outdoor heat exchange unit has a third state; in the third state, one end of the other outdoor heat exchange unit is in communication with the liquid pipe, and another end thereof is in communication with the high-pressure gas pipe via the valve assembly;
the other outdoor heat exchange unit has a fourth state; in the fourth state, the one end of the outdoor heat exchange unit is in communication with the liquid pipe, and the other end thereof is in communication with the low-pressure gas pipe via the valve assembly;
the valve assembly controls the outdoor heat exchange unit to switch between the third state and the fourth state;
the valve assembly comprises a high-pressure solenoid valve and a low-pressure solenoid valve;
the high-pressure solenoid valve has one end that forms a high-pressure inlet of the valve assembly, and another end that forms a high-pressure outlet of the valve assembly;
the low-pressure solenoid valve has one end being in communication with the high-pressure outlet, and another end that forms a low-pressure outlet of the valve assembly;
the high-pressure inlet is directly or indirectly in communication with the exhaust port of the compressor; the high-pressure outlet is in communication with the corresponding outdoor heat exchange unit; and the low-pressure outlet is in communication with the low-pressure gas pipe;
the air conditioning system further comprises a cooling four-way valve; a port D of the cooling four-way valve is in communication with the exhaust port of the compressor, a port S of the cooling four-way valve is in communication with the low-pressure gas pipe, a port C of the cooling four-way valve is in communication with the one outdoor heat exchange unit and the high-pressure inlet, respectively; the high-pressure outlet is in communication with the other outdoor heat exchange unit and a port E of the cooling four-way valve is in communication with the intake port of the compressor via a throttling device, or a port E of the cooling four-way valve is arranged to be closed.