LAMINATE-TYPE HEADER, HEAT EXCHANGER, AND AIR-CONDITIONING APPARATUS

摘要

A laminated header (2) according to the present invention includes: a first plate-like body (11) having a plurality of first outlet flow passages (11 A) formed therein; and a second plate-like body (12) laminated on the first plate-like body (11), the second plate-like body (12) having a distribution flow passage (12A) formed therein, the distribution flow passage (12A) being configured to distribute refrigerant, which passes through a first inlet flow passage (12a) to flow into the second plate-like body (12), to the plurality of first outlet flow passages (11A) to cause the refrigerant to flow out from the second plate-like body (12). A branching flow passage (12b) of the distribution flow passage (12A) includes: a branching portion; an inflow passage extending toward the branching portion; and a plurality of outflow passages extending from the branching portion in directions different from each other. Curvature radii of bending portions of the plurality of outflow passages are different from each other.