DEVICE FOR COOLING AIR IN REFRIGERATOR Russian patent published in 1996 - IPC

FIELD: refrigerating engineering; cooling the air by means of solidified gases, for example, solid carbon dioxide. SUBSTANCE: device has heat-insulating casing, reservoir for solid carbon dioxide with vertical fins and perforations in walls, electric fan, air passage, sublimated carbon dioxide passage, dry ice charging port, sublimated carbon dioxide discharge pipe union, warm air inlet and thermal relay. Position of air passage in immediate proximity of solid carbon dioxide reservoir provides for close contact of air being cooled. extraction of cold is effected at three walls of reservoir, lower wall inclusive which makes it possible to extract cold till complete sublimation of carbon dioxide in reservoir. EFFECT: enhanced efficiency. 3 dwg