Title:
CASCADE AIR CONDITIONER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/098354
Kind Code:
A1
Abstract:
A cascade air conditioner system. The air conditioning system comprises: a compressor (1) having a first air outlet (11), a second air outlet (12) and an air inlet (13); a flash tank (2) having a first flash evaporation port (21), a second flash evaporation port (22), a third flash evaporation port (23) and a fourth flash evaporation port (24); and a condenser evaporator (3) having a first port (31), a second port (32), a third port (33) and a fourth port (34). A first heat exchanger (41) is connected in series between the first air outlet (11) and the first flash evaporation port (21). The second flash evaporation port (22) is connected via a pipe with the first port (31). The second air outlet (12) is connected via a pipe with the fourth flash evaporation port (24). The third flash evaporation port (23) is connected via a pipe with an inlet of a first throttle element (51). An outlet of the first throttle element (51) is connected via a pipe with a second heat exchanger (42) and the third port (33). The second heat exchanger (42) is connected via a pipe with the second port (32) by means of a second throttle element (52) . The fourth port (34) is connected via a pipe with the air inlet (13). In the cascade air conditioner system, a gas refrigerant in the compressor (1) is introduced to the flash tank (2), such that the degree of dryness in the flash tank (2) can be controlled conveniently, thereby enhancing performance of the system.
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Inventors:
LIU XINGRU (CN)
LIANG XIANGFEI (CN)
ZHENG BO (CN)
LIANG XIANGFEI (CN)
ZHENG BO (CN)
Application Number:
PCT/CN2019/105103
Publication Date:
May 22, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F25B1/10; F25B41/30
Foreign References:
CN109489289A | 2019-03-19 | |||
CN108119955A | 2018-06-05 | |||
CN101782289A | 2010-07-21 | |||
CN106885389A | 2017-06-23 | |||
EP3444541A1 | 2019-02-20 |
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (CN)
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