Domestic cooling unit with a refrigerant - between the bearing unit in a secondary - refrigeration circuit and method for the defrosting of a heat exchanger of a secondary - refrigeration circuit

摘要

The present invention relates to a domestic cooling unit (1), in particular a no - frost - domestic cooling unit (1), with a housing (7), in which an interior space (3, 4) for accommodating foods is formed, with a primarily - refrigeration circuit (8), which is provided with a cold accumulator (11) is thermally coupled to each other, and with a first heat exchanger (13) and secondary - refrigeration circuit (10), the with the cold accumulator (11) and is thermally coupled to the cooling of the interior space (3, 4) and for this purpose with the interior space (3, 4) is thermally coupled to each other, wherein the secondary - refrigeration circuit () a refrigerant - between the bearing unit (20), in which in a defrost mode of the house hold cold device (1) for the defrosting of the first heat exchanger (13) of the secondary - refrigeration circuit (10) a in this first heat exchanger (13) and located from the first heat exchanger (13) omitted, the refrigerant in the refrigerant - between the bearing unit (20) for the duration of the defrost heater for the process according to the invention. The present invention also relates to a method for the defrosting of a heat exchanger (13) a domestic cooling unit (1).