To provide a structure capable of being manufactured by conventional extrusion molding, and preventing fracture of right and left sidewalls of a porous tube by heat strain, with respect to the porous tube for heat exchange used in an intercooler for a vehicle.
In the porous tube for heat exchange composed of a flat tube having tabular upper and lower walls, and the right and left sidewalls of a roughly semicircular section, and a plurality of vertical partitioning walls disposed between the upper and lower walls of the flat tube, and further having a plurality of passages, a pair of ribs respectively projecting inward from the center of the height of each inner face of the right and left sidewalls, having the taper shape having an intersecting angle of an upper face and a lower face of 10-30 degrees, having round tips, and having the sectional shape in which a thickness of a base section is less than the thickest section of the flat tube, are extended along the passages.
MAKINO KENJI
KIMURA SHIGEKI
| JPS59205591A | 1984-11-21 | |||
| JP2002318086A | 2002-10-31 | |||
| JPS5971083U | 1984-05-14 | |||
| JPH03156297A | 1991-07-04 | |||
| JPH10238987A | 1998-09-11 | |||
| JP2006023034A | 2006-01-26 | |||
| JP2007093144A | 2007-04-12 |