HEAT TRANSFER TUBE INTERNALLY PROVIDED WITH FIN MEMBER AND HEAT EXCHANGER PROVIDED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive heat transfer tube having improved heat conductivity to improve the efficiency and performance of heat exchanging inside/outside fluid via the heat transfer tube by internally mounting fin members in a flat tube while using simple manufacturing technique without requiring strict dimensional accuracy. SOLUTION: The heat transfer tube having a U-recessed wall face comprises fin parts 7 each consisting of a partition wall portion 5 and a base wall portion 6 and formed in at least axial one line in an internal space 4 to form an internal tube 3. The internal tube 3 is inserted and arranged in the flat tube 2. The inner peripheral face of the flat tube 2 has close contact with the outer peripheral face of a non-recessed portion of the internal tube 3 to form fluid distribution passages in an internal space 8 between each of the internal space 4 of the internal tube 3 and the outer periphery of a recessed portion of the internal tube 3 and the inner peripheral face of the flat tube 2. COPYRIGHT: (C)2006,JPO&NCIPI