METHOD OF CONTROLLING REFRIGERATOR OF TEMPERATURE CONTROL DEVICE

PROBLEM TO BE SOLVED: To provide a means capable of easily selecting a gas expansion valve of a temperature control device using a refrigerator and performing the temperature control of a medium (liquid or gas). SOLUTION: A valve driven by a stepping motor (commonly called an electronic expansion valve and capable of changing a flow rate of liquid gas or gas made to pass through the valve by the number of steps of the motor) is used. The number of steps of the stepping motor at each control temperature (this is an opening of the valve commonly called as an electronic expansion valve and the number of steps can be made to become a function of temperature) is predetermined (this corresponds to a large number of thin metal pipes with different inner diameters). The device drives the stepping motor to an opening at each control temperature, and controls a cooling capacity of the refrigerator. COPYRIGHT: (C)2010,JPO&INPIT