Heat exchanger, power conversion device including heat exchanger, and method for manufacturing inner fin for heat exchanger

Abstract

In a heat exchanger, an inner fin having heat transference is disposed in a flat passage, the inner fin is formed by a plurality of fin portions having a convex shape formed by a top surface portion and a side surface portion and having a hollow inside the convex shape; when a direction in which the plurality of fin portions are formed and lined to be continuous via a coupling portion is defined as a first direction and a direction in which slits are formed between the plurality of fin portions and lined is defined as a second direction, the plurality of fin portions are arranged at a predetermined interval in the second direction; and the inner fin is arranged such that the first direction and the second direction respectively forms an acute angle with respect to a flow of a refrigerant flowing in the flat passage.

Dependencies are inferred from the claim text.