Fin for heat exchanger
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Jul 7, 2014
filing date -
Jul 12, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fin for a heat exchanger is joined to an outer surface of a tube, and facilitates a heat exchange between the tube and an air flowing around the tube. A sectional surface of the fin perpendicular to a flowing direction of an air has a corrugated shape that includes multiple flat portions substantially parallel to a flowing direction of the air, and a ridge portion connecting the adjacent flat portions. Multiple louvers cut in and raised from each of the flat portions at a predetermined cut-and-raised angle are disposed on the flat portion along a flowing direction of the air. A thickness of each flat portion is defined as t, a louver pitch of the louvers is defined as PL, and the thickness of each flat portion and the louver pitch satisfy a relationship of 0.035≦t/PL≦0.29.
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