US 7,093,650 B2 · Heat conduction pipe externally covered with fin member

Abstract

It is an object of this invention to obtain a heat conduction pipe superior in corrosion resistance as well as heat exchange efficiency between fluid flowing respectively through an inside and an outside for great heat radiation property and endothermic characteristics. It is also object of this invention to form the heat conduction pipe superior in the corrosion resistance as well as the heat radiation property and endothermic characteristics at inexpensive price. To achieve the above, at least single resin coating layer is formed on an outer circumferential surface of a metal pipe, a metal fin member is spirally wound on an outer circumferential surface of the resin coating layer with a side end surface the metal fin member in contact. The winding contact portion is made to encroach a surface of the resin coating layer to form the heat conduction pipe.

Claims22

Dependent claims

A heat conduction pipe externally covered with a fin member comprising:

a metal pipe;
at least a single resin coating layer formed on an outer circumferential surface of the metal pipe;
and
a metal fin member wound spirally on an outer circumferential surface of the resin coating layer, the metal fin member having a side end surface, serving as a winding contact portion, in contact with the outer circumferential surface of the resin coating layer, the winding contact portion encroaching a surface of the resin coating layer to an encroaching depth of 10 to 60% of a thickness of said resin coating layer.

1 more element

Dependencies are inferred from the claim text.

Heat conduction pipe externally covered with fin member

Life of this patent

Heat conduction pipe externally covered with fin member

Life of this patent

Abstract

Claims22