GB337188A - - Google Patents

Abstract

337,188. Siemens - Schuckertwerke Akt.-Ges. Oct. 26, 1928, [Convention date]. Refrigerating, absorption machines and systems for.-In a continuouslyacting machine surplus liquid refrigerant is stored during the normal supply of heat to the generator for producing cold when the supply of heat is either reduced or cut off. The surplus refrigerant may be stored in, containers 13, Fig. 1, in the evaporator, the necessary absorption liquid being stored in containers 14 in the absorber. The production of the surplus refrigerant and its subsequent absorption may be promoted by decreasing and increasing respectively the cooling effect in the absorber. In a modification, refrigerant vapour passes from the electrically. heated generator 21, Fig. 2, through the pipe 24 to the vapour separator 25. The separator is also heated so as to produce surplus refrigerant which is stored in the containers 38 in the evaporator. In this case, the generator 21 is continuously-heated to maintain the liquid circulation through the absorber 27. The rate of evaporation of the refrigerant can be regulated by controlling the circulation of refrigerant vapour and inert gas between the evaporator and the absorber by variation of the liquid level in the absorber, such variation depending upon the pressure in an electrically-heated heat-insulated vessel 40 having a restricted vapour outlet 44 to the condenser 33 and liquid inlet and outlet pipes 39, 23 respectively connected to the absorber and the generator. An increase in pressure in the vessel 40 effects a higher level in the absorber and a decrease a lower level. In another arrangement, two vapours generators are provided, one to supply the condenser and the other an injector provided in the refrigerant vapour and inert gas circulation pipes between the evaporator _and the absorber. During the storage period both generators are in action, while during the evaporation of the surplus refrigerant only the second generator is in action. In a further modification, two generators with corresponding vapour separators are provided, one separator communicating with the condenser and the other with an injector in the, refrigerant vapour and inert gas circulation pipe between the evaporator and the absorber. In this arrangement, the second generator communicates with an electrically-heated heat-insulated vessel connected to the bottom of the absorber. Potash or soda lye, or sulphonic acid may be used as absorbents.