Heat exchanger and fabrication method thereof

Abstract

A heat exchanger having an aluminum main body is provided. The aluminum main body has heat exchange medium passages that allow the heat exchange medium to circulate, and fins for heat exchange extending outwards from the surface thereof. A method of fabricating the heat exchanger is also provided. The aluminum main body with heat exchange medium passages is formed by stretching or extrusion. The fins are shaped on the external surface of the aluminum main body through skiving. Since the main body and the fins are integrally formed, no extra combined thermal resistance exists between the fins and the main body, and thus the heat exchanger of the present invention has high heat exchange efficiency. Moreover, the method of fabricating the heat exchanger of the present invention has simple processes, and can ensure consistent product quality, and meanwhile does not use expensive copper tubes, thus reducing the cost effectively.

Dependencies are inferred from the claim text.