Patent ID: 8162041

Claim:
A heat exchanger including plate fins and tubes comprising: a plurality of fins stacked at respective intervals; and a plurality of heat exchanger tubes penetrating each of said fins in a fin-stacking direction, said heat exchanger exchanging heat between a first fluid flowing inside said heat exchanger tubes and a second fluid flowing outside said heat exchanger tubes, wherein each of said fins includes a main body that is substantially planar and a plurality of cut-raised portions extending from said main body and disposed at an upstream side of flow of the second fluid with respect to said heat exchanger tubes, and each of said cut-raised portions corresponds to a respective heat exchanger tube and includes first and second opposed side ends connected to the main body of said fin, wherein the first side end is nearer to the corresponding heat exchanger tube than is the second side end, the first side end is longer than the second side end, the first side end is disposed downstream, in the flow of the second fluid, of the second side end, facing the corresponding heat exchanger tube, and the first and second side ends of each of said cut-raised portions are parallel to the each other.