(57) A cooling device for use in ale coolers, automatic beverage machines, air-conditioning
apparatus or the like, said cooling device mainly comprising a series-connected evaporator
3, a compressor 4, a lamella condensor 5 and an air displacing member 6 for generating
a cooling air stream P along the condensor lamellae, wherein means, such as a polarity
commutating electric motor or flaps, for inverting the direction of flow of the cooling
air along the condensor lamellae at periodical intervals in order to blow back the
dust deposited on the lamellae and to conduct it to the outside.
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