Heat exchanger tube having fins with varying louver inclination angle
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United States of America Patent
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Jul 25, 2017
Issued Date -
N/A
app pub date -
Mar 15, 2013
filing date -
Mar 22, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A fin for a heat exchanger includes a flat portion having an upstream flat part and a downstream flat part parallel to a flow direction of a fluid. Multiple louvers are arranged in the flow direction. A fluid-turning part including a surface approximately parallel to the flow direction is arranged between two of the multiple louvers. A first portion of the louvers located upstream of the fluid-turning part are inclined in a direction opposite from a second portion of the louvers located downstream of the fluid-turning part. The first and second portion of the louvers include first louvers and second louvers. The first louvers are inclined from the flat portion at a first inclined angle larger than a second inclined angle at which the second louvers are inclined from the flat portion. The second louvers are arranged adjacent to the fluid-turning part.
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