GB501399A - Improvements in or relating to absorption refrigerating apparatus - Google Patents

Abstract

501,399. Refrigerating. HOOVER, Ltd. Aug. 19, 1937, Nos. 22759, 22760, 22761, and 22762. Convention dates, Aug. 24, 1936, Aug. 26, 1936, Dec. 30, 1936, and Dec. 30, 1936. [Class 29] Absorption machines and systems.-In a machine of the kind employing an inert pressureequalizing gas such as air or nitrogen, a part of the inert gas is tapped off from the main stream and used to raise liquid in the system. In a system of the kind described in Specification 501,398 and employing two evaporators and a twin-gas lift pump for supplying liquid refrigerant to the evaporators, the tapped-off gas is employed to operate the pump. In a modification, the inert gas tapped from the outlet F<2> of the circulating fan F is employed to force liquid refrigerant up the pipe J to the top of the evaporator E. In this case, the bottom of the pipe J is connected through a bend C<1> with the condenser C which is provided with an inert gas vent pipe C<2> and an overflow pipe C<3> connected to the strong liquor return pipe H<1> between the reservoir H and the generator B. The partial evaporation taking place in the pipe J precools the liquid passing to the evaporator. In another arrangement, a part of the inert gas passing into the pipe K, Fig. 3, connected to the liquid refrigerant lift pipe J flows through the pipe M and lifts weak liquor from the generator B up the pipe B<3> into the absorber A. Thus by controlling the speed of the gas circulating fans F the rates of circulation of all the fluids in the system are regulated.