HEAT TRANSFER PIPE INTERNALLY HAVING FIN MEMBER

摘要

PROBLEM TO BE SOLVED: To increase the heat exchange performance of a heat transfer pipe by increasing the contact area of a fin member with a raw pipe disposed in a heat transfer pipe and increasing the heat conductivity of the fin member to the raw pipe. SOLUTION: The metal plate-like fin member 4 formed longer in the pipe axial direction and having fins 3 projected from the axial center part thereof in at least two directions is inserted and disposed in the metal raw pipe 2 to form the heat transfer pipe 1. Also, a fitted surface 5 formed by making the outer tip side of the plate-like fin member 4 correspond to a part of the inner peripheral surface of the raw pipe 2 is fixedly fitted to the inner peripheral surface of the raw pipe 2. COPYRIGHT: (C)2005,JPO&NCIPI