Patent ID: 6896404

Claim:
A device for controlling the temperature of an object using heat transfer fluid, comprising: a cooler/heater ( 6 ) for cooling or heating heat transfer fluid which is supplied to an object ( 5 ); a heating medium temperature sensor ( 10 ) for detecting the current temperature of the heat transfer fluid; an object temperature sensor ( 12 ) for detecting the current temperature of the object ( 5 ); and a controller ( 9 ) for outputting a manipulated variable in respect of the cooler/heater ( 6 ) by performing a feedback control operation using the current heating medium temperature (T 1 ) from the heating medium temperature sensor and the current object temperature (Ts) from the object temperature sensor, wherein in the feedback control operation, the controller ( 9 ) calculates the temperature difference (−ΔT) between the object temperature (Ts) and the heating medium temperature (T 1 ), determines a target temperature to be the sum of the temperature difference (−ΔT) and the desired temperature (SV), and determines the manipulated variable so as to control the heating medium temperature (T 1 ) to this determined target temperature.