Heat exchanger and air conditioner

Abstract

A heat exchanger includes a plurality of flat tubes arranged in a first direction and a plurality of fins arranged in a second direction. Each of the fins includes a plurality of cutout portions through which the plurality of flat tubes pass, and a plurality of collar portions provided along at least a portion of edges of the plurality of cutout portions to hold the plurality of flat tubes. Each of the collar portions includes first, second and third spacer portions protruding in the second direction and are in contact with another adjacent fin. The first spacer portion is located on one side portion in the first direction of the collar portion, and the second and third spacer portions are located on the other side portion in the first direction of the collar portion such that the first spacer portion is located between the second spacer portion and the third spacer portion as viewed in the first direction. The sum of sizes in the third direction of the first to third spacer portions is more than or equal to 1 / 2 of size in the third direction of the fin. Figure 3