Gree Electric Appliances, Inc. of Zhuhai

Xiangfei Liang

Bo Zheng

Xingru Liu

Hui Huang

Jinsheng Fang

Boliang Huang

Rong Zhuang

Disclosed is a cascade air conditioner system. The cascade air conditioner system includes a compressor () having a first gas outlet (), a second gas outlet () and a gas inlet (); a flash tank () having a first flash evaporation port (), a second flash evaporation port (), a third flash evaporation port (), and a fourth flash evaporation port (); and a condenser evaporator () having a first port (), a second port (), a third port (), and a fourth port (), wherein 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 also 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 (). In the cascade air conditioner system, a gas-phase refrigerant in the compressor () is introduced to the flash tank (), such that the degree of dryness in the flash tank () can be controlled conveniently, thereby enhancing performances of the system.

Cascade air conditioner system

A compressor includes: a first cylinder, the first cylinder being provided with a first gas intake and a first gas outlet, the first air outlet being connected to a predetermined heat exchanger; a second cylinder, the second cylinder being provided with a second gas intake and a second gas outlet, and the second gas outlet being connected to the predetermined heat exchanger; and a gas pre-exhausting device. The gas pre-exhausting device is provided on a cylinder block of the first cylinder or on an upper end surface of the first cylinder or a lower end surface of the first cylinder; the gas pre-exhausting device includes a gas pre-exhausting port and a first control valve controlling the gas pre-exhausting port to be open or closed; and the gas pre-exhausting port is connected to the second gas intake. Further disclosed is an air conditioner system including the compressor.

Compressor and air conditioner system

The invention discloses a refrigeration device, including: a first compressor unit (), an indoor heat exchanger () and an outdoor heat exchanger (), sequentially communicated; a first throttle device () and a second throttle device (), sequentially connected in series; and an air supply device (), provided between the first throttle device () and the second throttle device (). The refrigeration device further includes a second compressor unit (). An air intake port (B) of the second compressor unit () is communicated with an outlet of the outdoor heat exchanger (). An outlet (E) of the second compressor unit () is communicated with the air supply port (C) of the first compressor unit () and an air exhaust port (D) of the first compressor unit () by means of a three-way valve (), respectively.

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Guangdong, China

Xiangfei Liang