| 摘要 |
PROBLEM TO BE SOLVED: To avoid danger such as explosion, etc., due to leakage of a combustible refrigerant in a heat pump system using the refrigerant. SOLUTION: The heat pump system 100 comprises a sensor 5 for detecting the leakage of a refrigerant in a frame 1 of an outdoor machine, a damper 7 openable only at the outside of the frame to exhaust a leaking refrigerant, a reversible blower fan 2 for an air heat exchanger and a controller for controlling them. The system reversely rotates the fan motor 3 to a regular operation to suck air outside the frame in the event of a combustible refrigerant leakage and the pressure in the frame then rises to open the damper 7, thereby quickly exhausting the refrigerant leaking in the frame of the outdoor machine to outside.
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