Patent ID: 7784529

Claim:
A heat exchanger comprising a refrigerant inlet header section having a refrigerant inlet at a first end portion thereof and a plurality of heat exchange tubes disposed at predetermined intervals in the longitudinal direction of the refrigerant inlet header section and connected at respective first end portions thereof to the refrigerant inlet header section, wherein the interior of the refrigerant inlet header section is divided into a first space into which a refrigerant flows through the refrigerant inlet, and a second space which communicates with the heat exchange tubes; the first and second spaces communicate with each other via a communication portion so as to generate, in the second space, a flow of the refrigerant in a direction counter to a refrigerant flow direction in the first space; and a flow-division-adjusting refrigerant inflow port communicating with the second space is formed at the first end portion of the refrigerant inlet header section such that the refrigerant flows into the second space through the flow-division-adjusting refrigerant inflow port without passing through the first space.