Patent ID: 9310814
Filing Date: 2016-04-12
CPC Classification: G05D,H01L

Claim Text:
1. A cooling device operating method for controlling a cooling device including a refrigerator, a heat exchanger connected to the refrigerator via a first circulating line circulating a first refrigerant and to a loading table via a second circulating line circulating a second refrigerant, and a pump placed on the second circulating line, to cool the loading table under control of a controller for performing low temperature inspection and high temperature inspection of an object under control of the controller by loading the object on the loading table of which the temperature is controllable through the cooling device and a heating device, the method comprising: continuously running the refrigerator to circulate the first refrigerant to the heat exchanger via the first circulating line and circulating the second refrigerant cooled in the heat exchanger to the loading table via the second circulating line by the pump through control of the controller for the low temperature inspection; stopping the refrigerator and the pump not to circulate the first and second refrigerants through control of the controller at least one time at the start of the high temperature inspection; and alternating the running and stopping of the refrigerator intermittently to circulate the first refrigerant to the heat exchanger via the first circulating line while stopping the pump not to circulate the second refrigerant through control of the controller until the high temperature inspection ends.