Patent ID: 6749016
Filing Date: 2004-06-15
Classification: F25B,G05D

Abstract:
A brine temperature controlling apparatus, comprising:a refrigeration unit having a compressor, a condenser, an expansion valve and a heat exchanger connected successively in series; a main brine circulating circuit having a tank, a pump and a load connected successively in series; a heater disposed in said tank; means for supplying electricity to activate said heater when the brine temperature falls below a preset temperature; an auxiliary brine circulating coolant passage, which passes through a proportional valve and said heat exchanger, providing fluid transport of cooled brine in a recirculating manner to said tank; and a temperature control means for controlling a degree of opening of said proportional valve such that the degree of opening of said proportional valve increases for supplying more cooled brine into said tank as the temperature of the brine in said tank increases, and the degree of opening of said proportional valve decreases for supplying less cooled brine into said tank as the temperature of the brine in said tank decreases.