HEAT EXCHANGER AUTO TEMPERATURE CONTROLLING DEVICE AND THE METHOD

摘要

PURPOSE: A thermostat of a heat exchanger is provided to keep the generating amount of oxygen regular by adjusting the set temperature of heat exchangers depending on the average temperature obtained from temperatures of each heat exchanger. CONSTITUTION: A thermostat of a heat exchanger includes: plural temperature sensors(7) for detecting temperatures of plural heat exchangers; an average operator(6) connected with the temperature sensors to obtain the average of the temperatures therefrom; and a temperature set unit(5) connected with the average operator, inputting the average temperature to H/L(high/Low) limits(1) to set the average value as the predetermined temperature of each heat exchanger for deciding opening/shutting of temperature control valves. The set temperatures of each temperature control valve rise up or fall down in proportion to the average temperature. Therefore, the thermostat controls temperature without regard to the generating amount of oxygen.