Abstract: A separation wake zone behind a heat transfer tube in a heat transfer device of a heat exchanger or the like is reduced, whereby a heat transfer action of the heat transfer device can be augmented and a pressure loss thereof can be reduced. The heat transfer device of the heat exchanger has a linear or tubular heat transfer object (T) in heat transfer contact with a heat carrier fluid (A), and a heat transfer fin (F) integrally formed with the heat transfer object for heat transmission therebetween. The heat transfer fin is provided with a guide fin (10) positioned in vicinity of the heat transfer object, and the guide fin conducts the fluid to the rear of the heat transfer object, thereby reducing the separation wake zone behind the heat transfer object.

Abstract: A heat transfer device of a heat exchanger capable of promoting the heat transfer action thereof and reducing the pressure loss thereof by reducing a peeling wake area at the rear of a heat transfer tube, comprising a linear or tubular heat transfer body (T) coming into contact with a heat transfer fluid (A) for heat transfer and heat transfer fins (F) integrally formed so as to transfer heat to the heat transfer body, the heat transfer fins further comprising guide fins (10) disposed near the heat transfer body, wherein the guide fins guide the heat transfer fluid to the rear of the heat transfer body to reduce the peeling wake area (C) at the rear of the heat transfer body, and the peeling point positions (B) of the heat transfer fluid are set at angular positions (&bgr;) of 90° or more from the stagnation point (E) of the heat transfer body by setting the angle of attack (&agr;), shape, position, and dimensional ratio of the guide fins.