Temperature-dependent output control for a heat pump absorber

In a heat pump for heating a heat carrying medium including an expeller, a condenser connected to said expeller for receiving hot refrigerant vapors from said expeller, an evaporator operatively connected with said condenser for receiving liquid refrigerant from said condenser, a heat exchanger for poor and rich solutions connected to said expeller for receiving poor solution from said expeller;

• an absorber connected to said heat exchanger for receiving poor solution from said heat exchanger through an expansion valve;
• said absorber being further connected to said expeller with the intermediary of said heat exchanger for applying rich solution from said absorber to said expeller;
• and heat exchanging conduit means arranged in said absorber for passing heat carrying medium through said absorber;
• the improvement comprising a bypass conduit connecting said expeller with said absorber and circumventing said heat exchanger for carrying one of said solutions between said expeller and said absorber with the circumvention of said heat exchanger;
• a valve contained in said bypass conduit;
• said valve having an open state in which communication is maintained through said bypass conduit between said expeller and said absorber;
• said valve having a closed state in which communication is blocked through said bypass conduit between said expeller and said absorber;
• temperature sensing means for responding to the flow temperature of the heat carrying medium exiting from said absorber;
• said temperature sensing means being connected to said valve for setting said valve into said open state when said flow temperature falls below a predetermined value;
• further wherein said heat exchanging conduit means have, within said absorber, heat exchanging surfaces so dimensioned as to effect thereon consideration of flash gas generated by expansion of the poor solution upon passage through said expansion valve.