Absorption cooling apparatus

An absorption cooling apparatus comprising:

• a pump for supplying in circulation an absorbing liquid of high refrigerant content;
• a generator for heating the absorbing liquid supplied from said pump;
• a gas-liquid separator with which said absorbing liquid heated with said generator is separated into an absorbing liquid of low refrigerant content and a refrigerant vapor;
• a heat exchanging unit for performing heat exchange between the absorbing liquid separated by said gas-liquid separator and the absorbing liquid which is yet to flow into said generator;
• a cooling section in which the liquid refrigerant obtained by liquefying said refrigerant vapor is dispensed onto the outer surface of a heat transfer medium circulating pipe so that the latter is cooled by the evaporation of said liquid refrigerant;
• an absorbing section in which the absorbing liquid of low refrigerant content supplied from said generator is dispensed to absorb the resulting refrigerant vapor;
• a liquid level detecting means for detecting the level of the liquid within said gas-liquid separator;
• an orifice portion on an absorbing liquid passageway extending from said gas-liquid separator which is provided either upstream or downstream of said heat exchanging unit;
• an on-off valve provided parallel to said orifice portion;
• and
• an on-off valve control means which controls said on-off valve in such a way that said on-off valve is closed when said liquid level detecting means detects the lower limit of the liquid level whereas said on-off valve is opened when the upper limit of the liquid level is detected.

An absorption cooling apparatus comprising:

• a pump for supplying in circulation an absorbing liquid of high refrigerant content;
• a generator for heating the absorbing liquid supplied from said pump;
• a gas-liquid separator with which said absorbing liquid heated with said generator is separated into an absorbing liquid of low refrigerant content and a refrigerant vapor;
• a heat exchanging unit for performing heat exchange between the absorbing liquid separated by said gas-liquid separator and the absorbing liquid which is yet to flow into said generator;
• a cooling section in which the liquid refrigerant obtained by liquefying said refrigerant vapor is dispensed onto the outer surface of a heat transfer medium circulating pipe so that the latter is cooled by the evaporation of said liquid refrigerant;
• and
• an absorbing section in which the absorbing liquid of low refrigerant content supplied from said generator is dispensed to absorb the resulting refrigerant vapor,
• a float moving up and down in response to the variations in the level of the absorbing liquid in said gas-liquid separator;
• and
• an outlet plugging valve which is operatively associated with said float to close the absorbing liquid outlet of said gas-liquid separator when the level of said absorbing liquid has dropped to the lower limit thereof.