| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tube for a heat exchanger capable of improving its heat exchanging efficiency with respect to the tube for the heat exchanger formed by extrusion molding. <P>SOLUTION: This tube 1 for the heat exchanger is formed into the long plate-shape long in the extruding direction by extrusion molding, a plurality of holes 1a for flow channels in which the heat exchange fluids flows inside are formed along the extruding direction, and the tube 1 is used in a state of being stacked on a fin for heat exchange. As a plurality of groove-like recessed portions 1e are formed by pressing a tube front face 1c and a tube rear face 1d in the extruding direction at intervals, a plurality of projecting portions 1b projecting in the direction to narrow cross-sectional areas of the holes 1a for flow channel are formed in the holes 1a for flow channel at intervals in the extruding direction. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
