Heat exchanger

Details Heat exchanger Heat exchanger

1994-11-22

1996-07-02

Leo, Leonard R.

Heat exchange

Radiator core type

Deformed sheet forms passages between side-by-side tube means

165149, 165176, F28D 1047, F28D 706

Patent

active

055312683

ABSTRACT:
A heat exchanger has flat tubes (1) parallelly arranged and spaced apart from each other a predetermined distance in the direction of thickness. The heat exchanger further has a pair of headers (5, 6) to which the ends of the tubes are connected in fluid communication. Each tube (1) has an intermediate bent portion (4) and straight sections (2, 3) separated one from another by the bent portion, and the bent portion (4) is a portion twisted at a predetermined helical angle relative to each straight section. Fins (11) are interposed between the adjacent straight sections (2), and further fins (12) between the other straight sections (3). The heat exchanger is easy to manufacture and of an improved efficiency of heat exchange, in spite of the tubes being bent in the direction of their width.

REFERENCES:
patent: 2894731 (1959-07-01), Wurtz
patent: 3028149 (1962-04-01), Pellmyr
patent: 3273227 (1966-09-01), Pauls
patent: 3416600 (1968-12-01), Fink
patent: 3750709 (1973-08-01), French
patent: 4625378 (1986-12-01), Tanno et al.
patent: 4938284 (1990-07-01), Howells
patent: 5036909 (1991-08-01), Whitehead et al.
patent: 5190101 (1993-03-01), Jaillevand et al.
patent: 5205347 (1993-04-01), Hughes
patent: 5314013 (1994-05-01), Tanabe
patent: 5327959 (1994-07-01), Saperstein et al.

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