GB968540A - Absorption refrigerating apparatus - Google Patents

Abstract

968,540. Refrigerating. ELECTROLUX Ltd. Dec. 29, 1960 [Jan. 12, 1960; Jan. 30, 1960], No. 44580/60. Heading F4H. In an absorption refrigerator of the kind using inert gas and having two metallic heat transfer members heat conductively connected to the liquid circulating system for the absorption solution in the apparatus, each heat transfer member is associated with its own heat source, each source being able to operate alternatively. Either source can be used depending on the energy source available, whether it be gas, kerosene or electricity of different voltages. Liquid circulation pumps 30 and 31 fed from pipe 34 containing a column of rich absorption solution to level 14 are heat conductively connected to heat transfer members 33 and 32, respectively, over substantially the same height, so that in each pump the quantity of refrigerant vapour required for normal operation of the apparatus is generated in the absorption solution. Vapours leaving the top of either pump flow through branch 26 and into the liquid in pipes 34 and 36 to sufficient depth to be analyzed. The refrigerant vapour then flows up through pipe 13 to the condenser (not shown). The weak worm absorbtion solution leaving either pump flows into pipe 35, which is connected to liquid heat exchanger 37. The boiler system is essentially made of vertical pipes forming a compact pipe bundle enclosed in insulation 27. In a modification (Fig. 1, not shown), a single pump is in thermal relation with the flue and the sleeve for the electric heater. The gas flue may be a continuous pipe and the bubble pipe may be provided with a metal profile, which by a suitable screw arrangement is pressed against the flue pipe.