HEAT EXCHANGER

PROBLEM TO BE SOLVED: To provide a heat exchanger having small ventilation resistance for obtaining a sufficient heat exchange quantity without largely increasing a ventilation flow rate. SOLUTION: This heat exchanger has a plurality of plate-like fins 1 mutually laminated at an interval, and a plurality of heat transfer pipes 2 arranged by penetrating in the laminating direction through the fins 1, and formed so that a refrigerant flows inside, and exchanges heat with the refrigerant by blowing air toward the fins 1 and the heat transfer pipes 2. Cutout parts 3 expansively opening toward the air blowing directional upstream side are arranged in respective positions becoming an equal distance from the adjacent two heat transfer pipes 2 in an air blowing directional upstream side edge part of the fins 1. A shape of the respective cutout parts 3 is formed in the same in the lengthwise direction of the fins 1. COPYRIGHT: (C)2004,JPO