Heat transfer tube having corrosion resistance coating layer, the heat exchanger having the heat transfer tube, the method of manufacturing a heat transfer tube

摘要

PROBLEM TO BE SOLVED: To provide an anticorrosive coating layer which can be formed into an elongate pipe without spending a time and effort and is excellent in thermal conductivity, a thermoconductive pipe (including a pipe with fins) having the anticorrosive coating layer, and a heat exchanger having the thermoconductive pipe.;SOLUTION: In the thermoconductive pipe 24, fins 28 are fixedly arranged at an outer peripheral face of a cylindrical thermoconductive pipe body 26 at predetermined pitch intervals. Surfaces of the thermoconductive pipe body 26 and the fins 28 are covered with the anticorrosive coating layer 40. The anticorrosive coating layer 40 is formed of a fluorine resin mixture. The fluorine resin mixture is formed by mixing carbon fiber 43, a low melting point alloy 44 containing tin, graphite 45, and silicone carbide 46 into a fluorine resin 42. The fluorine resin 42, the carbon fiber 43, and the low melting point alloy 44 are stuck to the surface of the thermoconductive pipe 24 while being dispersed.;COPYRIGHT: (C)2013,JPO&INPIT