Compound heat exhanger having cooling fins introducing different heat exhanging performances within heat exchanging core portion

A compound heat exchanger including a refrigerant condenser and an engine coolant radiator, comprising:

• a condenser core portion to carry out a heat exchange between a refrigerant and air, said condenser core portion including a plurality of condenser tubes through which the refrigerant flows and condenser fins disposed between said each pair of adjacent condenser tubes;
• and
• a radiator core portion disposed in series with said condenser core portion in an air flow direction with a predetermined clearance therebetween, to carry out a heat exchange between an engine coolant and the air, said radiator core portion including a plurality of radiator tubes through which the engine coolant flows and radiator fins disposed between said each pair of adjacent radiator tubes;
• wherein
• each of said condenser fins and said radiator fins are integrated by a connecting portion, and
• one of said condenser fins and said radiator fins introduce different cooling performances between a first area and a second area within a respective one of said condenser core portion and said radiator core portion.

A heat exchanger comprising:

• a heat exchanging core portion including:
• a first core portion to carry out a heat exchange between a first fluid and an external fluid, said first core portion including a plurality of first tubes through which the first fluid flows and first cooling fins disposed between said each pair of adjacent first tubes;
• a second core portion disposed in series with said first core portion in an external fluid flow direction with a predetermined clearance therebetween, to carry out a heat exchange between a second fluid and the external fluid, said second core portion including a plurality of second tubes through which the second fluid flows and second cooling fins disposed between said each pair of adjacent second tubes;
• and
• a third core portion disposed in series with said first core portion in the external fluid flow direction with a predetermined clearance therebetween, and disposed in parallel with said second core portion in the external fluid flow direction to carry out a heat exchange between a third fluid and the external fluid, said third core portion including a plurality of third tubes through which the third fluid flows and third cooling fins disposed between said each pair of adjacent third tubes, wherein each of some first cooling fins and said second cooling fins is integrated by a connecting portion,
• each of remaining first cooling fins and said third cooling fins is integrated by a connecting portion, and
• said first cooling fins, said second cooling fins and said third cooling fins introduce different cooling performances between one area and another area within said heat exchanging core portion.