초록 ▼

An object of the present invention is to suppress to a sufficiently small level variation in the temperature of an object in a case where the temperature of an object is controlled to a desired value using heat transfer fluid. A controller (9) controls the power of a thermoelectric conversion device

An object of the present invention is to suppress to a sufficiently small level variation in the temperature of an object in a case where the temperature of an object is controlled to a desired value using heat transfer fluid. A controller (9) controls the power of a thermoelectric conversion device (6) which is used for cooling or heating heat transfer fluid supplied to an object (5). The controller (9) performs a feedback control operation using the temperature (T1) of the heat transfer fluid emitted from the thermoelectric conversion device (6) and the temperature (Ts) of the object. In this feedback control operation, the difference between the object temperature (Ts) and the heating medium temperature (T1) is added to a set temperature (SV), whereby a target temperature of the heating medium temperature (T1) is calculated. By means of an I-PD calculation with respect to the deviation between this target temperature and the heating medium temperature (T1), a manipulated variable to be applied to the cooler/heater (6) is calculated. Prior to the beginning of this feedback control operation, an initial value of the aforementioned manipulated variable is calculated in accordance with the magnitude of a thermal load to be applied to the object (5) from outside during the control operation and the set temperature (SV). The feedback control operation begins upon the output of this initial value.

대표청구항 ▼

1. 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;

1. 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 (T1) 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 (T1), 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 (T1) to this determined target temperature. 2. The device according to claim 1, wherein the cooler/heater (6) cools or heats the heat transfer fluid using a thermoelectric conversion device.3. The device according to claim 1, wherein the controller (9), prior to beginning the feedback control operation, inputs the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation and an ON/OFF signal of the thermal load, determines an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load, and when beginning the feedback control operation, initially outputs the determined initial value.4. The device according to claim 3, wherein the controller (9), prior to the beginning of the feedback control operation, holds a value relating to a magnitude of the manipulated variable necessary for stabilizing and maintaining the object temperature (Ts) at the desired temperature (SV) when no thermal load is applied to the object (5) from outside, and when determining the initial value, uses this held value to adjust the initial value.5. A method for controlling the temperature of an object using heat transfer fluid, comprising the steps of:cooling or heating heat transfer fluid which is supplied to an object (5); detecting the current temperature of the heat transfer fluid; detecting the current temperature of the object (5); and controlling the amount by which the heat transfer fluid is cooled or heated by performing a feedback control operation using the detected current heating medium temperature (T1) and current object temperature (Ts), the controlling step comprising the steps of: determining a target temperature of the heating medium temperature (T1) so as to control the object temperature (Ts) to a desired temperature (SV); controlling the amount of heating or cooling so as to control the heating medium temperature (T1) to reach the determined target temperature; and calculating the temperature difference (?ΔT) between the object temperature (Ts) and the heating medium temperature (T1), and determining a target temperature to be the sum of the temperature difference (?ΔT) and the desired temperature (SV). 6. The device according to claim 5, wherein the controller (9), prior to beginning the feedback control operation, inputs the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation and an ON/OFF signal of the thermal load, determines an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load, and when beginning the feedback control operation, initially outputs the determined initial value.7. 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 inputting the current heating medium temperature (T1) from the heating medium temperature sensor and the current object temperature (Ts) from the object temperature sensor, and outputting a manipulated variable relating to the cooler/heater (6), the controller comprising: follow-up control means which, prior to the application of a thermal load to the object (5) from outside, determine a fixed target temperature on the basis of a set temperature (SV) and the temperature difference between the heating medium temperature (T1) and the object temperature (Ts) detected during a steady state, and then perform a follow-up control operation such that the current heating medium temperature (T1) is controlled to the fixed target temperature thus determined; and variable value control means which, when a thermal load is applied to the object (5) from outside, dynamically determine a current target temperature on the basis of the set temperature (SV) and the temperature difference between the current heating medium temperature (T1) and the current object temperature (Ts), and then perform a variable value control operation such that the current heating medium temperature (T1) is controlled to the current target temperature thus determined. 8. The device according to claim 7, wherein the follow-up control means initially perform a first control operation so as to control the current heating medium temperature (T1) to the set temperature (SV), and when as a result of this first follow-up control operation a steady state is established in which the heating medium temperature (T1) is stabilized to the set temperature (SV), perform a second control operation in which the temperature difference between the heating medium temperature (T1) and the object temperature (Ts) is calculated, the fixed target temperature is determined using the calculated temperature difference in the steady state and the set temperature (SV), whereupon the current heating medium temperature (T1) is controlled to the fixed target temperature.9. The device according to claim 7, wherein the variable value control means, prior to the beginning of the variable value control operation, set a numerical value relating to the magnitude of the thermal load to be applied to the object (5) from outside during the variable value control operation, determine an initial value of the manipulated variable in accordance with the magnitude of the thermal load using this set numerical value, and at the beginning of the variable value control operation, initially output the determined initial value.10. The device according to claim 9, wherein the variable value control means, prior to the beginning of the variable value control operation, hold a value relating to the magnitude of the manipulated variable at the time of establishment of the steady state by means of the second control operation performed by the follow-up control means, and when determining the initial value, use this held value to adjust the initial value.11. A method for controlling the temperature of an object using heat transfer fluid, comprising the steps of:cooling or heating heat transfer fluid which is supplied to an object (5); detecting the current temperature of the heat transfer fluid; detecting the current temperature of the object (5); and inputting the detected current heating medium temperature (T1) and current object temperature (Ts) and thereby controlling the amount by which the heat transfer fluid is cooled or heated, the controlling step comprising the steps of: determining a fixed target temperature, prior to the application of a thermal load to the object (5) from outside, based on a set temperature (SV) and the temperature difference between the heating medium temperature (T1) and the object temperature (Ts) detected during a steady state, and performing a follow-up control operation such that the current heating medium temperature (T1) is controlled to the determined fixed target temperature; and dynamically determining a current target temperature, when a thermal load is applied to the object (5) from outside, on the basis of the set temperature (SV) and the temperature difference between the current heating medium temperature (T1) and the current object temperature (Ts), and performing a variable value control operation such that the current heating medium temperature (T1) thus determined is controlled to the determined current target temperature. 12. 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); 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 (T1) 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) determines a target temperature of the heating medium temperature (T1) so as to control the object temperature (Ts) to the desired temperature (SV), and determines the manipulated variable so as to control the heating medium temperature (T1) to this determined target temperature; and wherein the controller (9), prior to beginning the feedback control operation, inputs the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation and an ON/OFF signal of the thermal load, determines an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load, and when beginning the feedback control operation, initially outputs the determined initial value. 13. 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); 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 (T1) 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) determines a target temperature of the heating medium temperature (T1) so as to control the object temperature (Ts) to the desired temperature (SV), and determines the manipulated variable so as to control the heating medium temperature (T1) to this determined target temperature; wherein the controller (9), prior to beginning the feedback control operation, inputs the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation and an ON/OFF signal of the thermal load, determines an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load, and when beginning the feedback control operation, initially outputs the determined initial value; and wherein the controller (9), prior to the beginning of the feedback control operation, holds a value relating to a magnitude of the manipulated variable necessary for stabilizing and maintaining the object temperature (Ts) at the desired temperature (SV) when no thermal load is applied to the object (5) from outside, and when determining the initial value, uses this held value to adjust the initial value. 14. A method for controlling the temperature of an object using heat transfer fluid, comprising the steps of:cooling or heating heat transfer fluid which is supplied to an object (5); detecting the current temperature of the heat transfer fluid; detecting the current temperature of the object (5); and controlling the amount by which the heat transfer fluid is cooled or heated by performing a feedback control operation using the detected current heating medium temperature (T1) and current object temperature (Ts), the controlling step comprising the steps of: determining a target temperature of the heating medium temperature (T1) so as to control the object temperature (Ts) to a desired temperature (SV); and controlling the amount of heating or cooling so as to control the heating medium temperature (T1) to reach the determined target temperature, prior to beginning the feedback control operation, inputting the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation, determining an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load; and when beginning the feedback control operation, initially outputting the determined initial value. 15. A method for controlling the temperature of an object using heat transfer fluid, comprising the steps of:cooling or heating heat transfer fluid which is supplied to an object (5); detecting the current temperature of the heat transfer fluid (5); detecting the current temperature of the object (5); and controlling the amount by which the heat transfer fluid is cooled or heated by performing a feedback control operation using the detected current heating medium temperature (T1) and current object temperature (Ts), the controlling step comprising the steps of: determining a target temperature of the heating medium temperature (T1) so as to control the object temperature (Ts) to a desired temperature (SV); controlling the amount of heating or cooling so as to control the heating medium temperature (T1) to reach the determined target temperature, prior to beginning the feedback control operation, inputting the magnitude of a thermal load to be applied to the object (5) from outside during the feedback control operation, determining an initial value of the manipulated variable in accordance with the magnitude of the inputted thermal load, and when beginning the feedback control operation, initially outputting the determined initial value, and wherein prior to the beginning of the feedback control operation, holding a value relating to a magnitude of the manipulated variable necessary for stabilizing and maintaining the object temperature (Ts) at the desired temperature (SV) when no thermal load is applied to the object (5) from outside, and when determining the initial value, using this held value to adjust the initial value.