Heat exchange – Side-by-side tubular structures or tube sections – With manifold type header or header plate
Patent
1994-04-19
1995-12-19
Flanigan, Allen J.
Heat exchange
Side-by-side tubular structures or tube sections
With manifold type header or header plate
165179, 165183, F28F 140
Patent
active
054761417
ABSTRACT:
A flat-type refrigerant tube for use in an heat exchanger which has a plurality of refrigerant passage chambers formed in a flat aluminum plate having a first end and a second end, the chambers extending from the one end to the opposite end in parallel with first another and arranged in a plane parallel to the flat outer surface of the flat tube, each of the chambers having a rectangular cross-section with four corners which is determined by a first pair of opposite sides with a dimension of A and a second pair of opposite sides with a dimension of B perpendicular to the first pair of opposite sides. Each of the four corners is formed with a curvature R determined by the following formula: 0.2 mm.ltoreq.R.ltoreq.D/2, where D equals A when A.ltoreq.B but equals B when B<A. Each of the chambers can be provided with at least one of elongated ribs longitudinally extending on the inner surface thereof.
REFERENCES:
patent: 3596495 (1971-08-01), Huggins
patent: 5058266 (1991-10-01), Knoll
patent: 5186246 (1993-02-01), Halstead
patent: 5219017 (1993-06-01), Halstead et al.
Flanigan Allen J.
Sanden Corporation
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