| 摘要 |
PROBLEM TO BE SOLVED: To provide an ammonia refrigerating device free from liquefaction of ammonia refrigerant intruding into a motor chamber, and having superior corrosion resistance and electrically insulating property. SOLUTION: A first solenoid valve 11 is disposed between an evaporator 5 and an expansion valve 6, a bypass flow channel 14 bypassing a suction side check valve 9 is disposed, and a second solenoid valve 15 is disposed in the bypass flow channel 14. The first solenoid valve 11 is closed, and the second solenoid valve 15 is opened, when a compressor body 3 is stopped. COPYRIGHT: (C)2010,JPO&INPIT
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