Refrigerating system using non-azeotropic mixed refrigerant

A refrigerating apparatus, comprising:

• a compressor to compress a non-azeotropic mixed refrigerant;
• a condenser to condense the compressed non-azeotropic mixed refrigerant;
• a valve to branch the non-azeotropic mixed refrigerant condensed by the condenser;
• a first evaporator to supply cold air to a first interior space;
• a second evaporator to supply cold air to a second interior space at a temperature higher than a temperature of the first interior space;
• at least one capillary tube to expand the non-azeotropic mixed refrigerant branched by the valve and to supply the expanded non-azeotropic mixed refrigerant to at least one of the first evaporator or the second evaporator;
• and
• a shielding region in which a first portion of the compressor suction pipe and a second portion of the at least one capillary tube are shielded from each other and the non-azeotropic mixed refrigerant flowing through the first portion of the compressor suction pipe does not exchange heat with the non-azeotropic mixed refrigerant flowing through the second portion of the at least one capillary tube.