Refrigerating apparatus using non-azeotropic mixed refrigerant

A controlling method for a refrigerating apparatus, the refrigerating apparatus comprising:

• a main body having an interior space;
• a door to open and close an opening of the main body;
• a compressor to compress a non-azeotropic mixed refrigerant;
• a condenser to condense the compressed non-azeotropic mixed refrigerant;
• a hotline disposed at a contact portion between the main body and the door to flow the non-azeotropic mixed refrigerant having passed through the condenser, wherein heat of the non-azeotropic mixed refrigerant is radiated by the hotline;
• an expander to expand the non-azeotropic mixed refrigerant from the hotline;
• and
• at least one evaporator to evaporate the expanded non-azeotropic mixed refrigerant to supply cold air to the interior space,
• wherein at least one of a frequency or a stroke of the compressor is controlled, such that the compressor performs a continuous operation mode in which the compressor continuously operates without stopping during operation of the refrigerating apparatus such that a temperature of the non-azeotropic mixed refrigerant discharged from the condenser maintains a predetermined value, and in the continuous operation mode, the non-azeotropic mixed refrigerant continues to flow such that the heat of the non-azeotropic mixed refrigerant is radiated by the hotline.

A refrigerating apparatus, comprising:

• a main body having an interior space;
• a door to open and close an opening of the main body;
• a compressor to compress a non-azeotropic mixed refrigerant;
• a condenser to condense the compressed non-azeotropic mixed refrigerant;
• a hotline disposed at a contact portion between the main body and the door to flow the non-azeotropic mixed refrigerant passing through the condenser, wherein heat of the non-azeotropic mixed refrigerant is radiated by the hotline;
• an expander to expand the non-azeotropic mixed refrigerant from the hotline;
• at least one evaporator to evaporate the expanded non-azeotropic mixed refrigerant to supply cold air;
• an edge condenser between the condenser and the expander and in parallel with the hotline to radiate the heat of the non-azeotropic mixed refrigerant;
• and
• a valve to control an amount of the non-azeotropic mixed refrigerant flowing into the edge condenser and an amount of the non-azeotropic mixed refrigerant flowing into the hotline relative to the amount of the non-azeotropic mixed refrigerant flowing into the edge condenser.