JPS54131876A - Constant pressure type boiling cooler - Google Patents

Abstract

PURPOSE: To secure the boiling-cooling at the constant pressure at all times by always setting the pressure within the cooler to the value slightly larger or smaller than the atmospheric pressure and then shifting the refrigerant boiling point to the cooling target temperature.

CONSTITUTION: The pressure inside the container is the sum of the atmospheric pressure and weight 10 when the heating value of heat generator 9 is O, which is identical to the saturation vapor pressure of refrigerant solution 8a and at the target boiling temperature. With generation of heat, refrigerant vapor 8c and solution 8a reach reservoir 6a via tube 5a. In this case vapor 8c is liquefied 8b, and companding part 7 expands to secure balance. The temperature increment of solution 8a becomes O by the circulation of boiling and condensation to be identical to the saturation vapor pressure a the target boiling point. With more intensive heat generation, solution 8a reduces and the condensation area of condenser 3 increases, and solution 8a is kept at the target boiling point. With decrement of the heating value, the container's inner pressure lowers down and solution 8b shifts to cooling container, and part 7 contracts to keep automatically the temperature of 8a at the target boiling point and then to be kept at the saturation vapor pressure then. Thus, the steady and satisfactory boiling cooling performance can be obtained with selection of weight 10.

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