Air-cooled absorption-type water cooling and heating apparatus

An air-cooled absorption-type water cooling and heating apparatus, comprising:

• a high-temperature regenerator having a heating source for heating a dilute solution;
• a separator for separating said dilute solution heated by said high-temperature regenerator into refrigerant vapor and an intermediate-concentration solution;
• a high-temperature heat exchanger for subjecting said intermediate-concentration solution to heat exchange with said dilute solution flowing into said high-temperature exchanger;
• first change-over means adapted to introduce said refrigerant vapor introduced from said separator into a low-temperature regenerator during cooling and into a water heating device during heating;
• second change-over mean adapted to introduce said intermediate-concentration solution from said high-temperature heat exchanger into said low-temperature regenerator to generate a condensed solution during cooling and into a first spraying mechanism during heating;
• a condenser for condensing said refrigerant vapor from said low-temperature regenerator into a liquid refrigerant during cooling so as to be supplied to said first spraying mechanism;
• a low-temperature heat exchanger by which a condensed solution flowing in from said low-temperature regenerator is subjected to heat exchange with said dilute solution entering said high-temperature heat exchanger so as to be cooled;
• a second spraying mechanism which receives the supply of said condensed solution from said low-temperature heat exchanger during cooling and receives the supply of said liquid refrigerant from said water heating device during heating;
• a first cold/hot water heat exchanger through which cold or hot water is allowed to flow, externally surrounding means being disposed around an outer periphery of said first cold/hot water heat exchanger with a fixed interval therebetween;
• and
• a second cold/hot water heat exchanger through which said cold or hot water is allowed to flow,
• wherein said first spraying mechanism is adapted to spray said condensed solution or said liquid refrigerant onto an outer surface of said first cold/hot water heat exchanger, said second spraying means is adapted to be capable of spraying said condensed solution or said liquid refrigerant onto an inner surface of said externally surrounding means so as to obtain a dilute solution, an outer surface of said externally surrounding means is capable of being air-cooled, and a circulation pump is provided to pressure-feed said dilute solution to said low-temperature heat exchanger,
• whereby the temperature of said first spraying mechanism is detected during cooling and the temperature of said second spraying mechanism is detected during heating, and when a predetermined temperature is reached, said dilute solution can be introduced from the delivery side of said circulation pump into said first spraying mechanism or said second spraying mechanism.