US 12,078,393 B2
Air conditioning system
Yufei Yang, Guangdong (CN); Siqing Liao, Guangdong (CN); and Yongdong Ou, Guangdong (CN)
Assigned to GUANGDONG MEIZHI PRECISION-MANUFACTURING CO., LTD., Guangdong (CN)
Filed by GUANGDONG MEIZHI PRECISION-MANUFACTURING CO., LTD., Guangdong (CN)
Filed on Jul. 12, 2021, as Appl. No. 17/372,620.
Application 17/372,620 is a continuation of application No. PCT/CN2019/109651, filed on Sep. 30, 2019.
Claims priority of application No. 201910350874.2 (CN), filed on Apr. 28, 2019.
Prior Publication US 2021/0341183 A1, Nov. 4, 2021
Int. Cl. F25B 41/42 (2021.01); F25B 13/00 (2006.01); F25B 31/02 (2006.01); F25B 41/20 (2021.01); F25B 41/33 (2021.01); F25B 41/36 (2021.01); F25B 41/39 (2021.01)
CPC F25B 41/42 (2021.01) [F25B 13/00 (2013.01); F25B 31/023 (2013.01); F25B 41/20 (2021.01); F25B 41/33 (2021.01); F25B 41/36 (2021.01); F25B 41/39 (2021.01); F25B 2341/0683 (2013.01); F25B 2400/074 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An air conditioning system comprising:
a high-pressure pipe for circulation of high-pressure refrigerant;
a low-pressure pipe for circulation of low-pressure refrigerant, the low-pressure pipe being connectable to the high-pressure pipe in an on-off manner;
an indoor heat exchanger connected to one of the high-pressure pipe and the low-pressure pipe;
an outdoor heat exchanger connected to another one of the high-pressure pipe and the low-pressure pipe;
a leak-free thermal expansion valve connected between the indoor heat exchanger and the outdoor heat exchanger; and
a variable capacity compressor comprising:
a shell with a suction port and an exhaust port;
a first cylinder with a first suction hole connected to the suction port, a first exhaust hole connected to the exhaust port, and a pressure relief hole; and
a second cylinder with a second suction hole connected to the suction port and a second exhaust hole connected to the exhaust port,
wherein:
the high-pressure pipe, the low-pressure pipe, and the pressure relief hole are connectable in three conduction states; and
prior to starting the variable capacity compressor and for a first preset duration, the high-pressure pipe, the low-pressure pipe, and the pressure relief hole are connected in a third conduction state of the three conduction states where the high-pressure pipe and the low-pressure pipe are connected.