Arrangement for preventing freezing of the working medium in...

Details Arrangement for preventing freezing of the working medium in... Arrangement for preventing freezing of the working medium in...

F - Mech Eng,Light,Heat,Weapons

25

B

342/14

F25B 49/00 (2006.01) F25B 15/10 (2006.01) F25B 49/04 (2006.01)

Patent

CA 1333632

The invention refers to an arrangement at a refrigerator cabinet (10) having an absorption refrigerating apparatus (16,18) operated by a heating cartridge (40) from at least one electric current source or by a gas burner (38). The arrangement shows a control apparatus (74) which automatically starts the gas burner (38) when the supply of current to the heating cartridge (40) ceases. The refrigerating apparatus (18) is with exception of its evapora- tor (16) enclosed in a heat insulated chamber (20) through which surrounding air circulates for cooling of the refrigerating apparatus (18). In order to prevent the refrigerant in the refrigerating apparatus from freezing to plugs at low temperature of the surrounding air, which plugs put the refrigerating apparatus out of function, means (86) are arranged to limit the air circulation through the chamber (20) and a temperature sensing means (80) is located in the chamber for breaking the current to the heating cartridge (40) at a certain low temperature in the chamber (20) so that the gas burner (38) is put into operation.

587178

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