Refrigeration Cycle Apparatus

Abstract

A refrigeration cycle apparatus includes a refrigerant circuit and refrigerant. The refrigerant is a zeotropic mixed refrigerant. At least one of the condenser and the evaporator has a first heat exchange unit located windward and a second heat exchange unit located leeward in a first direction in which air flows. Each of the first heat exchange unit and the second heat exchange unit has an inflow passage and an outflow passage for the refrigerant that are located in a plurality of stages arranged in the second direction crossing the first direction. The refrigerant flows out from the outflow passage of the second heat exchange unit into the inflow passage of the first heat exchange unit. The outflow passage of the second heat exchange unit is located in the same stage as the outflow passage of the first heat exchange unit in the second direction.

1 . A refrigeration cycle apparatus comprising:
 a refrigerant circuit comprising a compressor, a condenser, a pressure reducing valve, and an evaporator; and   refrigerant circulating through the refrigerant circuit in order of the compressor, the condenser, the pressure reducing valve, and the evaporator, wherein   the refrigerant is a zeotropic mixed refrigerant,   at least one of the condenser and the evaporator comprises a first heat exchange unit located windward and a second heat exchange unit located leeward in a first direction in which air flows,   each of the first heat exchange unit and the second heat exchange unit comprises an inflow passage and an outflow passage for the refrigerant that are located in a plurality of stages arranged in a second direction crossing the first direction,   the refrigerant flows out from the outflow passage of the second heat exchange unit into the inflow passage of the first heat exchange unit, and   the outflow passage of the second heat exchange unit is located in the same stage as the outflow passage of the first heat exchange unit in the second direction,   
       wherein
 at least one of the condenser and the evaporator has a first heat exchange region and a second heat exchange region located in the second direction, 
 each of the first heat exchange region and the second heat exchange region has the inflow passage and the outflow passage of each of the first heat exchange unit and the second heat exchange unit, 
 in each of the first heat exchange region and the second heat exchange region, the refrigerant flows out from the outflow passage of the second heat exchange unit into the inflow passage of the first heat exchange unit, 
 in each of the first heat exchange region and the second heat exchange region, the outflow passage of the second heat exchange unit is located in the same stage as the outflow passage of the first heat exchange unit in the second direction, and 
 the inflow passages of the first heat exchange unit in the first heat exchange region and the second heat exchange region are located adjacent to each other in the second direction. 
 
     
     
         2 . The refrigeration cycle apparatus according to  claim 1 , wherein in each of the first heat exchange unit and the second heat exchange unit, the inflow passage has an inner diameter larger than an inner diameter of the outflow passage. 
     
     
         3 . (canceled) 
     
     
         4 . The refrigeration cycle apparatus according to  claim 1 , wherein in each of the first heat exchange region and the second heat exchange region, the inflow passage of the second heat exchange unit is located in a stage different from the inflow passage of the first heat exchange unit in the second direction. 
     
     
         5 . The refrigeration cycle apparatus according to  claim 1 , further comprising a blower apparatus, wherein
 the blower apparatus comprises a fan having a tip and a root, a boss to which the root of the fan is fixed, and a motor to which the boss is rotatably connected,   the outflow passage of each of the first heat exchange unit and the second heat exchange unit in the first heat exchange region is located to overlap with the tip of the fan in the first direction,   the outflow passage of each of the first heat exchange unit and the second heat exchange unit in the second heat exchange region is located to overlap with the boss and the motor in the first direction, and   the inflow passage of each of the first heat exchange unit and the second heat exchange unit in each of the first heat exchange region and the second heat exchange region are located to overlap with a center between the tip and the root of the fan in the first direction.   
     
     
         6 . The refrigeration cycle apparatus according to  claim 1 , wherein
 at least one of the condenser and the evaporator further comprises a sub-cool line connected to the outflow passage of the first heat exchange unit in each of the first heat exchange region and the second heat exchange region, and   the sub-cool line is located adjacent to the outflow passage of the first heat exchange unit in the first heat exchange region in the second direction.