US 11,781,788 B2
Cascade air conditioner system
Xingru Liu, Guangdong (CN); Xiangfei Liang, Guangdong (CN); and Bo Zheng, Guangdong (CN)
Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Guangdong (CN)
Appl. No. 17/293,888
Filed by GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Guangdong (CN)
PCT Filed Sep. 10, 2019, PCT No. PCT/CN2019/105103
§ 371(c)(1), (2) Date May 13, 2021,
PCT Pub. No. WO2020/098354, PCT Pub. Date May 22, 2020.
Claims priority of application No. 201811352233.2 (CN), filed on Nov. 14, 2018.
Prior Publication US 2022/0011021 A1, Jan. 13, 2022
Int. Cl. F25B 5/04 (2006.01); F24F 11/65 (2018.01); F25B 41/30 (2021.01); F24F 13/30 (2006.01); F25B 43/00 (2006.01)
CPC F25B 5/04 (2013.01) [F24F 11/65 (2018.01); F24F 13/30 (2013.01); F25B 41/30 (2021.01); F25B 43/00 (2013.01); F25B 2600/2515 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A cascade air conditioner system for regulating a temperature, comprising a compressor, a flash tank, and a condenser evaporator, wherein the compressor has a first gas outlet, a second gas outlet and a gas inlet, the flash tank has a first flash evaporation port, a second flash evaporation port, a third flash evaporation port, and a fourth flash evaporation port, the condenser evaporator has a first port, a second port, a third port, and a fourth port, a first heat exchanger is connected in series between the first gas outlet and the first flash evaporation port, the second flash evaporation port is connected via a pipe with the first port, the second gas outlet is connected via a pipe with the fourth flash evaporation port, the third flash evaporation port is connected via a pipe with an inlet of a first throttle element, an outlet of the first throttle element is connected via a pipe with a second heat exchanger and is connected via a pipe with the third port, the second heat exchanger is connected via a pipe with the second port through a second throttle element, and the fourth port is connected via a pipe with the gas inlet.
 
8. A cascade air conditioner system for dehumidifying, comprising a compressor, a flash tank, and a fourth heat exchanger, wherein the compressor has a first gas outlet, a second gas outlet, and a gas inlet, the flash tank has a first flash evaporation port, a second flash evaporation port, a third flash evaporation port, and a fourth flash evaporation port, the first gas outlet is connected via a pipe with an inlet of a first heat exchanger, an outlet of the first heat exchanger is connected via a pipe with the first flash evaporation port, the second gas outlet is connected via a pipe with the fourth flash evaporation port, the second flash evaporation port passes through the fourth heat exchanger and a second throttle element in sequence to be connected via a pipe with an inlet of a second heat exchanger, an outlet of the second heat exchanger is connected in parallel with an inlet of a third heat exchanger and is connected via a pipe with the third flash evaporation port through a first throttle element, an outlet of the third heat exchanger is connected via a pipe with the gas inlet, and the third heat exchanger, the second heat exchanger, the fourth heat exchanger, and the first heat exchanger are arranged along a gas flow direction in sequence.