Tube and heat exchanger having the same

Details Tube and heat exchanger having the same Tube and heat exchanger having the same

2005-08-30

2005-08-30

Flanigan, Allen (Department: 3753)

Heat exchange

Flow passages for two confined fluids

C165S110000, C165S140000, C165S177000, C062S335000

Reexamination Certificate

active

06935414

ABSTRACT:
In a tube for a heat exchanger, a plurality of passages is defined. The passages are arranged in rows parallel to a major axis of the tube cross-section and staggered. When the tube is extruded, an extrusion material can flow around dies for forming passages and easily merge between the dies. Since walls between adjacent passages can be easily formed, formability of the tube is improved.

REFERENCES:
patent: 5242015 (1993-09-01), Saperstein et al.
patent: 5372188 (1994-12-01), Dudley et al.
patent: 6000467 (1999-12-01), Tokizaki et al.
patent: 6032726 (2000-03-01), Wright et al.
patent: 6467535 (2002-10-01), Shembekar et al.
patent: 6540015 (2003-04-01), Kawachi et al.
patent: 59205591 (1984-11-01), None
patent: 2000-346584 (2000-12-01), None

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