| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating machine comprising a cold water freezing prevention mechanism capable of preventing heat exchanger plates of an evaporator from being damaged by effectively preventing freezing of cold water in the evaporator. SOLUTION: A plate type evaporator 40 is used as the evaporator of the refrigerating machine, the plate evaporator 40 comprises a cold water inlet port 24 directing to the stacking direction of the heat exchanger plates 21 from a cold water inlet 26 formed on a side face 6b and successively communicated with one end of each of cold water flow channels 22, and a cold water outlet port 25 successively communicating the other ends of the cold water flow channels 22, directing to the stacking direction of the heat exchanger plates 21, and connected with a cold water outlet 27 formed on the side face 6b, a cold water outlet temperature sensor 41 is mounted at the cold water outlet 27, a heat exchange temperature sensor 42 is mounted on an end portion at a side opposite to the cold water outlet 27 of the cold water outlet port 25, and a control means 43 is mounted to automatically stop a compressor when a measured temperature of the cold water outlet temperature sensor 41 or the heat exchange temperature sensor 42 becomes lower than a prescribed temperature. COPYRIGHT: (C)2007,JPO&INPIT
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