Heat exchanger

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9891008
SERIAL NO

12449033

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Each fin 30 is designed to have continuous lines of wave crests 34 and continuous lines of wave troughs 36 arranged at a preset angle in a specific angle range of 10 degrees to 60 degrees relative to the main stream of the air flow and symmetrically folded back about folding lines of a preset folding interval W along the main stream of the air flow. A ratio (a/p) of an amplitude ‘a’ of a waveform including one wave crest 34 and one adjacent wave trough 36 to a fin pitch ‘p’ satisfies a relation of 1.3×Re−0.534 or at a bottom of the wave trough 36 to the wavelength ‘z’ of the waveform satisfies a relation of 0.2534 and the continuous lines of the wave troughs 36 are arranged to have an angle of inclination a of not less than 25 degrees at a cross section of the waveform. This arrangement effectively improves the heat transfer coefficient of a heat exchanger and thereby allows effective size reduction of the heat exchanger.

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Patent Owner(s)

  • THE UNIVERSITY OF TOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Kentaro Kariya, JP 58 368
Shikazono, Naoki Tokyo Metropolis, JP 12 96

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