Patent ID: 7819179
Filing Date: 2010-10-26
Classification: F25B,G01R

Abstract:
1. A temperature control apparatus comprising: a temperature control head kept in contact with an electronic device as a testing object thermally; an electric heater attached to the temperature control head; a refrigerant passage formed within the temperature control head so as to run through refrigerant inside thereof; a first temperature sensor which detects a temperature of the electronic device; a compressor which compresses refrigerant coming out of the temperature control head; a second temperature sensor which detects a temperature of refrigerant on the outlet side of the compressor; a condenser which condenses refrigerant coming out of the compressor; a returning portion which returns refrigerant condensed by the condenser to the temperature control head; a bypass portion including first and second bypass passages connected in parallel to each other for returning the refrigerant condensed by the condenser to the compressor by bypassing the temperature control head; a first control portion which controls the temperature of the electronic device by controlling a quantity of electricity of the electric heater, a quantity of refrigerant flowing through the first bypass passage and a quantity of refrigerant flowing through the refrigerant passage in the temperature control head corresponding to an output of the first temperature sensor; and a second control portion which controls the temperature of the refrigerant on the intake side of the compressor by controlling a quantity of refrigerant flowing through the second bypass passage corresponding to the output of the second temperature sensor.