To eliminate the shortage of a heating capacity in an air conditioner equipped with a hot gas bypass heater or a room heating circuit when the operating fluid in the room heating circuit is discharged into a cooling circuit in order to restrain an abnormal high pressure condition upon heating operation.
In an air conditioner provided with a compressor, a cooling circuit, a heating circuit and an operating fluid discharging means 190, the compressor is provided with a suction unit 116 and a discharging unit 121, the cooling circuit is provided with a condenser, arranged in a route from the discharging unit 121 to the suction unit 116, and a heat exchanger, arranged in the downstream of the condenser, the heating circuit is provided with a bypass passage from the discharging unit 121 to the heat exchanger and the heat exchanger while the operating fluid discharging means 190 discharges the operating fluid from the discharging unit 121 into the suction unit 116 when the discharging pressure Pd of the operating fluid has become a predetermined high pressure condition.
FUJII TOSHIRO
NAKANE YOSHIYUKI
BAN TAKASHI
TOYODA AUTOMATIC LOOM WORKS (JP)
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