| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater capable of early and surely detecting the occurrence of leakage of a refrigerant from a condensing heat exchanger when using the combustible refrigerant. <P>SOLUTION: An apex region in the whole length range in the left/right direction in a box body 5 is partitioned by a lateral partitioning plate 58, the condensing heat exchanger 12 covered with a heat insulation member 7 is arranged, and the lower side of the lateral partitioning plate 58 is laterally defined into an air blowing chamber 61 and a machine chamber 62 by a vertical partitioning plate 57. An evaporating heat exchanger 14 and a fan 14a are arranged in the air blowing chamber 61, and a compressor 11 and an expansion valve 13 are arranged in the machine chamber 62. An introduction face 711 having a gradient descending toward an upper-end opening 731 is formed at the internal bottom face of the heat insulation member 7, and at the same time, a cylindrical passage 73 is made to penetrate the machine chamber 62 and protruded. A gas sensor 8 is arranged at the bottom of the machine chamber 62 located in a lower position of lower-end opening 732. <P>COPYRIGHT: (C)2013,JPO&INPIT |
