HEAT EXCHANGER FOR VEHICLE AIR CONDITIONING DEVICE, AND VEHICLE AIR CONDITIONING DEVICE

A heat exchanger for a vehicle air-conditioner includes a plurality of fins (1) arranged parallel to one another and a plurality of heat transfer tubes extending parallel to one another through the fins (1). The heat transfer tubes are arranged on the surface of each fin (1) in a staggered pattern. The fins (1) are pieces cut by a corrugated cutter (9) from a band material (2) having through-holes (3) through which the heat transfer tubes are to extend. A row pitch Dp of the heat transfer tubes is expressed as ºDp = C + D + 2 ¢ W + 2 ¢ ´ for 0 < ´ < D + Wº where C is the thickness of the cutter (9), D is the outside diameter of the heat transfer tube, W is the width of a fin collar flange (5) projecting outwards from the tip of a fin collar (4) extending from the edge of each of the through-holes (3) to one side of each of the fins (1), and ´ is the clearance between the cutter (9) and the fin collar flange (5).