COLD ACCUMULATOR Russian patent published in 2006 - IPC F25D3/00 

FIELD: refrigerating equipment, particularly devices using cold-storage bodies.

SUBSTANCE: cold accumulator comprises tank with cold accumulation substance and heat-exchanger including pipes filled with coolant. Upper heat-exchanger section is located in ambient atmosphere, lower one is submersed in cold accumulation substance. Heat-exchanger pipes are connected in pairs and form single loop. One pipe has increased heat-transfer capacity in upper pipe section. Another pipe has increased heat-transfer capacity in lower section submersed in cold accumulator. Valve adapted to prevent reverse liquid flow if ambient temperature exceeds cold-accumulation substance temperature is arranged inside one of the pipes. Above heat-transfer capacity increase is obtained by forming pipe of special structure, for instance by providing the pipe with ribs in lower pipe section or with using heat-insulation in upper pipe section or by usage of pipes having varying diameter.

EFFECT: increased cold accumulation efficiency and reduced accumulator cost.

4 cl, 2 dwg