Patent ID: 6233968
Filing Date: 2001-05-22
Classification: F25B,Y02A,Y02B

Abstract:
An absorption refrigerating machine in which water is used as a refrigerant and a water solution of salt is used as an absorption solution, said machine comprising:a first evaporator;a second evaporator, of which refrigerant is a mixed solution to which the absorption solution is added;a first absorber;a second absorber;a regenerator;a condenser;a solution heat exchanger;a mixed refrigerant tank positioned at a lower portion of said second evaporator;a water supplying passage for supplying water to the refrigerant of said second evaporator;a first flow control means disposed in said water supplying passage;an absorption solution supplying passage for supplying the absorption solution to the refrigerant of said second evaporator;a second flow control means disposed in said absorption solution supplying passage;a mixed refrigerant circulation passage for circulating the mixed refrigerant collected in the lower portion of said second evaporator;concentration detection means mounted to said mixed refrigerant circulation passage;liquid level detection means for detecting liquid level of the mixed refrigerant collected in the lower portion of the second evaporator; andcontrol means for controlling said first flow control means on the basis of an output signal of said concentration detection means and for controlling said second flow control means on the basis of an output signal of said liquid level detection means, whereinabsorption heat generated at said second absorber is cooled by said first evaporator.