Air conditioner and cooling receiver of air conditioner

An air conditioner, comprising:

• an air-conditioning cycle comprising a first compressor, a first condenser, a first expansion device, and a first evaporator, the air-conditioning cycle having a first refrigerant circulating therethrough;
• a refrigeration cycle circuit comprising a second compressor, a second condenser, a second expansion device, and a second evaporator, the refrigeration cycle having a second refrigerant circulating therethrough;
• and
• a cooling receiver to thermally exchange the first and second refrigerants respectively passed through the first and second condensers, the cooling receiver to store the thermally exchanged second refrigerant,
• wherein the cooling receiver comprises:
• a cooling unit comprising a plurality of first refrigerant flow channels through which the second refrigerant passed through the second condenser flows and a second refrigerant flow channel which surrounds an outer circumference of part of the plurality of first refrigerant flow channels and through which the first refrigerant passed through the first condenser flows and supercools the second refrigerant flowing through the plurality of first refrigerant flow channels;
• and
• a receiver unit accommodating an upper portion of the cooling unit and storing the supercooled second refrigerant exiting from the plurality of first refrigerant flow channels,
• the air conditioner further comprising:
• a first inlet flow channel to supply the plurality of first refrigerant flow channels with the second refrigerant passed through the second condenser, the first inlet flow channel being connected to the plurality of first refrigerant flow channels through the second refrigerant flow channel;
• a second inlet flow channel to supply the second refrigerant flow channel with the refrigerant passed through the first condenser, the second inlet flow channel being connected to the second refrigerant flow channel;
• a first outlet flow channel to have the refrigerant passed through the second refrigerant flow channel to exit, the first outlet flow channel being connected to an upper portion of the second refrigerant flow channel through an upper surface of the receiver unit and to a suction flow channel of the first compressor;
• and
• a second outlet flow channel to have the supercooled second refrigerant stored in the receiver unit exit the receiver unit, the second outlet flow channel being connected to the receiver unit and to a suction flow channel of the second evaporator,
• wherein a lower portion of the cooling unit is protruded from a lower surface of the receiver unit,
• wherein:
• the first inlet flow channel and the second inlet flow channel are disposed at the lower portion the cooling unit;
• and
• the second outlet flow channel is disposed at the lower surface of the receiver unit;
• wherein:
• upper ends of the plurality of first refrigerant flow channels disposed inside the receiver unit are open,
• an upper surface of the second refrigerant flow channel disposed inside the receiver unit is closed, and
• the upper ends of the plurality of first refrigerant flow channels are protruded from the upper surface of the second refrigerant flow channel.