| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi room type air conditioner which has a bypass pipe provided between a discharge gas pipe and a liquid pipe of an outdoor unit, and which is free of staying of a refrigerant in dead-end piping and of the possibility of lowering of the capacity. SOLUTION: The multi room type air conditioner comprises the outdoor unit 1 having a constitution wherein the discharge side of a compressor 4 is connected to first piping 7, while the intake side of the compressor 4 is connected to second piping 8, and connection is made from the discharge side of the compressor 4 to third piping 10 via a first opening-closing valve 9, an outdoor heat exchanger 5 and an electronic expansion valve 6, while the intake side of the compressor 4 and piping between the first opening-closing valve 9 and the outdoor heat exchanger 5 are connected through the intermediary of a second opening-closing valve 11, a branching unit 2 wherein parallel connection is made and a plurality of indoor units 3a, 3b and 3c; which are connected in parallel via indoor heat exchangers 15 and electronic expansion valves 17, and this air conditioner enables execution of simultaneous operations for cooling and heating that are conducted with the outdoor heat exchanger 5 made to stop. Herein the bypass pipe 19 equipped with at least a restriction mechanism 18 is connected between the third piping 10 in the outdoor unit 1 and the discharge side of the compressor 4.
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