| 摘要 |
PROBLEM TO BE SOLVED: To provide a vending machine for suppressing noise from a solenoid valve, and for attaining low-cost and high-reliability operation of a compressor. SOLUTION: The vending machine is structured to constitute a cooling circulation circuit of a compressor 61 for compressing a refrigerant; a condenser 62, arranged in an outside of a box for condensing the refrigerant; an expansion means for expanding the refrigerant; a distributor for distributing the refrigerant expanded by the expansion means; and a plurality of in-box heat exchangers 65a, 65b, 65c provided in the box from the distributor via a cooling solenoid valve, and for evaporating the refrigerant, and to constitute a heating and cooling circulation circuit 60A of operating an heat pump by a cooling circulation circuit, a second in-box heat exchanger installed in the box for condensing the refrigerant compressed by the compressor 61. By having a second expansion means for expanding the condensed refrigerant and a piping from the compressor 61 to the condenser 62, and piping to be connected to the second in-box heat exchanger from the compressor 61, which are connected by a three-way solenoid valve 68 selectively exchanging the flow path, abnormal sound is suppressed. COPYRIGHT: (C)2011,JPO&INPIT |
