| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump type heat source machine capable of detecting a flammable refrigerant leaking from a refrigerant pipe securely in an early stage in such a case.SOLUTION: The heat pump type heat source machine 3 includes an air heat exchanger 18, a compressor 20, a heat exchanger 21 for hot water heating, an expansion valve 22, a refrigerant pipe 23 which connects those devices 18, 20, 21 and 22 and in which the flammable refrigerant is put, and a sensor 37 which detects the flammable refrigerant leaking from the refrigerant pipe 23, and is provided with a tube 41 which is fitted outside the refrigerant pipe 23, and made of a heat-shrinkable tube. One end part 41a of the tube 41 is fixed in contact with an outer peripheral surface of the refrigerant pipe 23 while the refrigerant pipe 23 is covered with the tube 41, and the another end part 41b of the tube 41 is extended to nearby the sensor 37 and opened. |
