TWO-STAGE COMPRESSION AIR CONDITIONING SYSTEM AND CONTROL METHOD THEREOF

WIPO Patent Application WO/2015/188656

A1

A two-stage compression air conditioning system comprises a two-stage compressor (1), a four-way reversing valve (8), an outdoor heat exchanger (6), a first throttling device (5), a flash vaporizer (4), a second throttling device (3) and an indoor heat exchanger (2). The opening of the first and second throttling devices (5, 3) is adjustable. A bypass pipe (13), a heat accumulator (11) and a control valve are also comprised. The bypass pipe (13) is connected between the first end port of the outdoor heat exchanger (6) and an intake port of the two-stage compressor (1). A first heat exchanging pipe (11a) of the heat accumulator (11) is connected in series between an exhaust port of the two-stage compressor (1) and a first end port of the indoor heat exchanger (2), and a second heat exchanging pipe (11b) of the heat accumulator (11) is connected in series to the bypass pipe (13). The control valve is used to selectively conduct or interrupt the bypass pipe (13) and the pipe between the first end port of the outdoor exchanger (6) and the intake port of the two-stage compressor (1). A control method of the two-stage compression air conditioning system is also disclosed.

LI DAWEI (CN)
XIONG JUN (CN)
LIANG ZHITAO (CN)

PCT/CN2015/076355

December 17, 2015

April 10, 2015

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GREE ELECTRIC APPLIANCES INC (CN)

F25B13/00; F25B41/20; F25B41/34; F25B47/02

CN103574966A	2014-02-12
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JPH04236075A	1992-08-25
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JPH11294906A	1999-10-29
CN104061705A	2014-09-24
CN203964436U	2014-11-26
CN103983037A	2014-08-13
CN203908096U	2014-10-29

KANGXIN PARTNERS, P.C. (CN)
北京康信知识产权代理有限责任公司 (CN)

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