A compressor (1), an oil-liquid separator (2), an electromagnetic four-way valve (3), an air-cooled condenser (4), a second check valve (7), a liquid accumulator (8), a sight glass (9), a filter (10), a thermostatic expansion valve (11), an indoor evaporator (12) and a vapor-liquid separator (13) are connected in series through pipes.
? 没 什 么 大不了- 你 爸 不付? 账 就是?? 题patents-wipo patents-wipo