| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve safety of a heat pump device using a combustible HC refrigerant. SOLUTION: This heat pump device comprises a refrigerant circuit 6, having a compressor 1, outdoor heat exchanger 3, pressure reducing means 4 and refrigerant-to-water heat exchanger 5, water circulating circuit 10 having an indoor heat exchanger 7, circulating pump 8 and water heat exchanger 9, air supply means 11 of the exchanger 3, leak detecting means 12 for detecting leakage of the refrigerant, control means 13 for receiving leak detection signal of the detecting means to operate the means 11 to stop the operation of the compressor 1, and outdoor unit 14 for containing the refrigerant circuit component, the leakage detecting means and the supply means. When the combustible HC refrigerant leaks from the circuit in an outdoor unit 14, the leakage is detected, the means 11 is actuated, and the refrigerant is diffused into the atmosphere. At the same time, the compressor is stopped. Accordingly, since the refrigerant in the unit 14 will not reach combustible concentration, safety is improved.</p> |
