HEAT EXCHANGER, METHOD FOR PRODUCING SAME, AND REFRIGERATION CYCLE DEVICE

摘要

This heat exchanger comprises: a plurality of plate-shaped fins (11) that are stacked at predetermined intervals and between which air flows, the fin (11) being made of a metal including aluminum and having insertion holes; and a plurality of flat tubes (12) made of a metal including aluminum and inserted into the fins such that a refrigerant flows through each tube along the direction in which the fins (11) are stacked. There is a space between a fin collar (18) of the fin (11) and the flat tube (12) that comes into contact with the fin collar (18), and the fin (11) and the flat tube (12) are joined by a wax cladding material (15) including a wax material covering the outer peripheral surfaces on both sides of the flat tube (12) in the major axis direction and the semicircular outer peripheral surface where the plate-shaped fin contacts the short side of the flat tube (12). Thus, joining is performed easily and reliably.