| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner, capable of changing the type of a compressor between an inside high-pressure type and an inside low-pressure type in accordance with the condition of operation and capable of developing the optimum capacity in accordance with the condition of operation. SOLUTION: A first suction pipe 11 is connected to a compressing unit 7, a second suction pipe 12 is connected to a motor chamber 6, a first discharging pipe 13 is connected to the motor chamber 6, a second discharging pipe 14 is connected to a discharging chamber 7, a first bypass passage 15 is provided to communicate the first discharging pipe 13 with the first suction pipe 11, a second bypass passage 16 is provided to communicate the second discharging pipe 14 with the second suction pipe 12, a first opening and closing valve a is provided between the first discharging pipe 13 and a flow passage switching valve 2, a second opening and closing valve b is provided in the second discharging pipe 14, a third opening and closing valve c is provided in the second suction pipe 12, a fourth opening and closing valve d is provided in the first bypass passage 15, a fifth opening and closing valve e is provided in the second bypass passage 16 and the first suction pipe 11 as well as the second suction pipe 12 and the first discharging pipe 13 as well as the second discharging pipe 14 are communicated with a refrigerant circuit through the flow passage switching valve 2 respectively.
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