| 摘要 |
PURPOSE:To reduce the amount of liquid coolant used in a hot-water supplying apparatus and to prevent back flow of the liquid coolant to a compressor, by providing an expansion valve in the vicinity of a condenser. CONSTITUTION:By providing an expansion valve 6 in the vicinity of the outlet of a condenser 2 in a heat-collecting coolant circuit, a connecting pipe 18 extended between the condenser 2 and a heat collector 7 and between the heat collector 7 and a compressor 1 is made to function as a low-pressure conduit, so that the coolant flowing through a conduit extended from the expansion valve 6 to the heat collector 7 and a conduit extended from the heat collector 7 to the compressor 1 is kept in two phases. With such an arrangement, the efficiency of operation can be increased by reducing the amount of the coolant used in the apparatus, minimizing the pressure loss and preventing overheating of the suction gas. |
