| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger suppressing manufacturing costs. <P>SOLUTION: This heat exchanger 3 on the side of a heat source includes: a first header 31a and a second header 31b which allow a refrigerant to flow therein; a plurality of first flat multihole pipes 32a and a plurality of second flat multihole pipes 32b; and a return header 31c. The first flat multihole pipes 32a and second flat multihole pipes 32b are flat pipes respectively formed with a plurality of refrigerant flow passage holes 33a, 33b. The first flat multihole pipes 32a and second flat multihole pipes 32b are arranged to form a plurality of rows along a first direction in which air heat-exchanged with the refrigerant flows, and are arranged to form a plurality of stages along a second direction which is the longitudinal direction of the first header 31a and second header 31b. The return header 31c forms a refrigerant confluent space 35 into which the refrigerant flow passage holes 33a, 33b are opened, with respect to each of the stages. <P>COPYRIGHT: (C)2013,JPO&INPIT |
