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A corrugated fin for a double heat exchanger having a condenser and a radiator integrally includes a condenser fin and a radiator fin. Each of the condenser fin and the radiator fin has plural bent portions and plural flat portions each of which connects adjacent bent portions. A louver-forming proc

A corrugated fin for a double heat exchanger having a condenser and a radiator integrally includes a condenser fin and a radiator fin. Each of the condenser fin and the radiator fin has plural bent portions and plural flat portions each of which connects adjacent bent portions. A louver-forming processing amount of the flat portion of the condenser fin is set smaller than that of the flat portion of the radiator fin. Plural dimple-shaped plastically deformed portions are formed in the flat portion of the condenser fin, so that a whole processing amount of the condenser fin becomes substantially equal to that of the radiator fin. As a result, a radius of curvature of each bent portion of the condenser fin is substantially equal to that of the radiator fin, and the integrated fin is restricted from being deformed.

대표청구항 ▼

1. A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising:a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each o

1. A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising:a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a closed plastically deformed portion formed by plasticity processing; and the plastically deformed portion is a concave-convex portion.