EP0283937A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Flat tube for heat exchanger with inner fin inserted therein
Assignee: Marelli Corp
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Filing: 1988-03-17
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Granted: —
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Expires: 2008-03-17
Abstract
Abstract Aluminum flat tube for heat exchanger with an inner fin inserted therein, comprising a pair of aluminum plate members (20) with both side portions bent like a hook in the same direction to form bends (21), both nose portions formed flat, both the flat portions (22) made opposite on the same horizontal line, and with a brazing material clad at least on the outer surface, an inner fin (30) inserted when the pair of aluminum plate members (20) are put together to a flat tube (10), wherein said pair of aluminum plate members (20) are put together to have the inner fin (30) inserted therein, and then brazed with the flat portions of the bends (21) joined therefor.
Inventors
- 👤 Toshinori Izawa
- 👤 Seiichi Murakami
- 👤 Sinobu Asakawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28D1/0316; F28D1/0391; F28F; F28F3/00; F28F3/02; F28F3/025; F28F2275/00; F28F2275/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
In a tube for heat exchanger comprising an aluminum flat tube (10, 61, 83) with a brazing material (71) clad on the outer surface, an inner fin (30, 63) inserted in the aluminum flat tube, characterized by a pair of aluminum plate members (20) with both side portions bent like a hook in the same direction to form bends (21), both nose portions formed flat, both the flat portions (22, 69) made opposite on the same horizontal line, and with a brazing material (71) clad at least on the outer surface, an inner fin (30, 63) inserted when the pair of aluminum plate members (20) are put together to a flat tube (10), wherein said pair of aluminum plate members (20) are put together to have the inner fin (30, 63) inserted therein, and then brazed with the flat portions of the bends (21) joined therefor.
Claim 2
Dependent Claim
146 words
In a tube for heat exchanger comprising an aluminum flat tube (10, 61, 83) with a brazing material (71) clad on the outer surface, an inner fin (30, 63) inserted in the aluminum flat tube, characterized by a pair of aluminum plate members (20) with both side portions bent like a hook in the same direction to form bends (21), both nose portions formed flat, both the flat portions (22, 69) made opposite on the same horizontal line, and with a brazing material (71) clad at least on the outer surface, an inner fin (30, 63) inserted when the pair of aluminum plate members (20) are put together to a flat tube (10), wherein said pair of aluminum plate members (20) are put together to have the inner fin (30, 63) inserted therein, and then brazed with the flat portions of the bends (21) joined therefor.
Claim 3
Dependent Claim
109 words
In a flat tube (61, 83) for heat exchanger with inner fin (63) inserted therein, characterized in that said flat tube (61) is formed by putting together a pair of tube semimembers (65, 66) or by bending a plate member (20), the butt portions are formed of curved portions (67) curved inward and flat portions (69) coming after ends of the curved portions (67), said inner fin (63) is inserted between the flat portions (69) of said butt portions at both sides or one side thereof, further the inner fin (63) is projected outward from said opposite pair of flat portions (69) at both sides or one side thereof.
Claim 4
Dependent Claim
109 words
In a flat tube (61, 83) for heat exchanger with inner fin (63) inserted therein, characterized in that said flat tube (61) is formed by putting together a pair of tube semimembers (65, 66) or by bending a plate member (20), the butt portions are formed of curved portions (67) curved inward and flat portions (69) coming after ends of the curved portions (67), said inner fin (63) is inserted between the flat portions (69) of said butt portions at both sides or one side thereof, further the inner fin (63) is projected outward from said opposite pair of flat portions (69) at both sides or one side thereof.
References Cited (Backward Citations)
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