Refrigeration apparatus with non-azeotropic refrigerant mixture

A refrigeration apparatus, comprising:

• a refrigerant;
• a refrigeration circuit for circulating the refrigerant, the refrigeration circuit including:
• a compressor;
• a condenser;
• an expander formed of a capillary tube;
• an evaporator;
• and
• a heat exchanger that cools the refrigerant flowing through the expander by means of the refrigerant flowing from the evaporator to the compressor;
• a fan which generates cooling air that cools the condenser;
• and
• a machine processor,
• wherein
• the refrigerant is a non-azeotropic refrigerant mixture that contains:
• 50% by weight or more and 80% by weight or less of a high-boiling point refrigerant,
• 10% by weight or more and less than 50% by weight of a medium-boiling point refrigerant, and
• 20% by weight or less of a low-boiling point refrigerant,
• the medium-boiling point refrigerant having a boiling point lower than a boiling point of the high-boiling point refrigerant,
• the low-boiling point refrigerant having a boiling point lower than the boiling point of the medium-boiling point refrigerant,
• a content of the high-boiling point refrigerant in the refrigerant is larger than a content of the medium-boiling point refrigerant in the refrigerant,
• the content of the medium-boiling point refrigerant in the refrigerant is larger than a content of the low-boiling point refrigerant in the refrigerant,
• piping through which the refrigerant discharged from the compressor and flowing into the condenser passes includes a first pipe,
• the machine processor houses the compressor, the condenser, the fan, and the piping, the machine processor includes a front opening and a rear opening, the fan is disposed between the front opening and the rear opening, the refrigeration apparatus is configured that when the fan rotates, outside air is sucked into the machine processor through the front opening, and air in the machine processor is discharged from the rear opening, and
• the first pipe is arranged such that the refrigerant flowing through the first pipe enters the condenser in a direction opposite to a direction of the cooling air flows.