ÉCHANGEUR DE CHALEUR ET DISPOSITIF DE CYCLE DE RÉFRIGÉRATION

摘要

In the heat exchanger according to the present invention, when an n-th turn of a helix of the ridge is defined as a first ridge, an (n+1)-th turn of the helix of the ridge is defined as a second ridge, and the trough between the first ridge and the second ridge is defined as an intermediate trough, and when a portion of the first pipe including the first ridge, the second ridge, and the intermediate trough is viewed in a section along the flow direction of the first heat medium, the recess is formed such that a vertex of the recess is positioned downstream of a center point of the intermediate trough in the flow direction of the first heat medium.