GB389674A - Improvements in or relating to absorption refrigerating systems - Google Patents

Abstract

389,674. Refrigerating. HOOVER, Ltd., Perivale, Greenford, Middlesex.- (Assignees of Nelson, R. S. ; 1020, Cross by Street, Rockford, Illinois, U.S.A.) May 11, 1932, No. 13516. Convention date, May 23, 1931. [Class 29.] Absorption machines and systems.-Absorption of the refrigerant vapour is effected in two or three stages at progressively decreasing temperatures, the whole of the absorption liquid being passed through each stage. In a continuously-acting system operating with a pressure-equalizing inert gas, the mixed vapour and inert gas flow from the evaporator E through the duct 37 to the tubular heatexchanger 33 and thence through pipe 45, heatexchanger 50 and pipe 52 to the main absorber 22 from which the unabsorbed vapour and the inert gas pass through the pipe 53 to the second absorber 23 and thence through the pipe 54 to the third absorber 21. The inert gas returns to the evaporator through pipe 47, heat-exchanger 33 and duct 38. The hot weak liquor is carried by the vapour evolved in the electrically-heated generator 10 up the pipe 15 to the separator 29 from which the liquor flows through the heat-exchangers 50, 17 and the air-cooled coils 19 to the absorber 21 from which its flows in turn through the absorbers 22, 23 to the reservoir 28 and thence through the heat-exchanger 17 to the generator, while the vapour passes through the rectifier 30 and the water-cooled condenser c to a trap 32 from which the condensate passes through a pipe 35 to the top of the evaporator. The vapour separated in the trap flows through a pipe 34 to an injector 56 which promotes the flow of the mixed vapour and inert gas to the absorber 22. The absorber 22 is cooled by a volatile liquid which circulates through the absorber jacket 60, condenser coil 63 and air-cooled pipe 65. In a modification, the volatile liquid flows through pipes passing through the absorber 22 and connected to upper and lower headers which communicate with the condenser coil 63. The machine may be mounted in a compartment at the side or rear of a refrigerator cabinet upon the top of which is supported a tank of water containing the condensers c, 63. Specification 382,867 is referred to.