Patent ID: 9689620
Date: 2017-06-27
CPC Classifications: F28D,F28F

Claim:
1. A heat exchanger for performing heat exchange between a heat-exchange fluid flowing through a flow path having a pair of opposing side surfaces and a heat-exchange object located outside the flow path, wherein the pair of opposing side surfaces of the flow path are formed with alternating pairs of recessed portions and pairs of protruding portions, the flow path is further formed by a planar surface positioned between a pair of the pairs of recessed portions and extending downstream along the flow path from the pair of recessed portions to a position between a downstream pair of protruding portions of the pairs of protruding portions, and the flow path being formed such that a distance between the downstream pair of protruding portions of the pair of side surfaces is narrower than a distance between the pair of recessed portions along a flow direction, and depths of the flow path at all locations between the pair of recessed portions, as measured from the planar surface at the position between the pair of recessed portions, is smaller than depths of the flow path at all locations between the downstream pair of protruding portions, as measured from the planar surface at the position between the downstream pair of the protruding portions of the pair of side surfaces.