Heat exchanger
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 16, 2014
Issued Date -
N/A
app pub date -
Jun 17, 2009
filing date -
Jun 20, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heat exchanger includes a plurality of flat tubes and at least one wavily folded fin disposed between a pair of the flat tubes. The fin includes a heat transfer portion having a folded portion joined to a planar portion of each of the pair of flat tubes, and a cut-and-raised portion. The cut-and-raised portion is formed by raising a periphery of a cutting line segment when a material of the fin is wavily folded. The cutting line segment is set in a vicinity of a hypothetical center line of the folded portion before the material of the fin is wavily folded. The cutting line segment is formed by a combination of cutting line segments intersecting with the hypothetical center line, or a combination of a cutting line segment intersecting with the hypothetical center line and a cutting line segment displaced with respect to the hypothetical center line.
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