Heat exchanger

Details Heat exchanger Heat exchanger

1989-01-18

1990-03-20

Nilson, Robert G.

Heat exchange

Radiator core type

Side-by-side tubes traversing fin means

F28D 104

Patent

active

049093193

ABSTRACT:
A heat exchanger having an improved and substantially uniform heat exchange efficiency, provided with a plurality of plate fins each of which has tube inserting bores arranged in a staggered manner, and heat transfer tubes inserted through these bores, a plurality of each of the fins which are between the tubes being cut doubly to a small width and raised so as to form louver elements so that the louver elements cross a flow of the air stream. The root portions of the louver elements are positioned so as to surround the inserted portions of the tubes, the louver elements consisting of central louver elements formed on both sides of the center line of the row of the tubes, and a plurality of rows of divisional louver elements formed on both sides of the central louver elements with base portions left on the regions of the fin which are on a line crossing the mentioned center line, and the length of the divisional louver elements in the outside rows farthest away from the center line is set substantially equal to the distance between the louver elements in each row and the length of the divisional louver elements in the inside rows.

REFERENCES:
patent: 4691767 (1987-09-01), Tanaka

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