Heat exchange – Radiator core type – Deformed sheet forms passages between side-by-side tube means
Patent
1988-08-09
1990-04-10
Schwadron, Martin P.
Heat exchange
Radiator core type
Deformed sheet forms passages between side-by-side tube means
29890039, 165 76, 165152, 165174, 228183, F28D 103
Patent
active
049151630
ABSTRACT:
A plate type heat exchanger has a plurality of tube units and a plurality of corrugated fins. Each of the tube units is formed by a pair of plates, namely a pair of plates are connected to each other by a brazing material at a connecting portion at an outer periphery of the plate and a center rib at a center axis of the plate. The center rib has an enlarged portion at the top end thereof in order to gather the molten brazing material toward the enlarged portion. The brazing at the center rib is started from the enlarged portion. Therefore a brazing defect is prevented from occurring at the top end of the center rib. Since the tube unit is effectively connected by brazing, the tube unit of the present invention has enough anti-pressure strength.
REFERENCES:
patent: 3451114 (1969-06-01), Wesneke
patent: 4249597 (1981-02-01), Carey
patent: 4696342 (1987-09-01), Yamauchi et al.
patent: 4723601 (1988-02-01), Ohara et al.
patent: 4800954 (1989-01-01), Noguchi et al.
Matsunaga Ken
Ohshita Masami
Sudo Masatoshi
Tsuchiya Kiyomitsu
Yamauchi Yoshiyuki
Flanigan Allen J.
Nippondenso Co. Ltd.
Schwadron Martin P.
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