Heat exchanger and manufacturing method for the same

摘要

In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. In this heat exchanger, the tube is bonded to the header plate in a solid phase. Therefore, the plate fins are mechanically bonded to the tube and the end portion of the tube in the longitudinal direction of the tube can be bonded to the header plate without a furnace of a high temperature.