Thermostatic coolant circulating device

摘要

A coolant circuit 21 for circulating a coolant to a load 20 includes a temperature sensor 35 that measures the temperature of the coolant sent out from a heat exchanger 25. A refrigerating circuit 22 in which the aforesaid coolant has its temperature raised by cooling the load 20 in the heat exchanger 25 by allowing heat exchange with a refrigerant includes an electronic expansion valve 52 capable of adjusting the flow rate of the refrigerant supplied to the aforesaid heat exchanger 25. A control section 23 has a circuit section for adjusting the opening degree of the aforesaid electronic expansion valve 52 so that the temperature of the coolant measured by the aforesaid temperature sensor 35 will be a set temperature.