Heat exchanger and manufacturing method therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11054195
APP PUB NO 20200103182A1
SERIAL NO

16578429

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A heat exchanger includes a tube expansion portion provided on a heat transfer tube such that an outer peripheral surface of the heat transfer tube is pressed against an inner peripheral surface of a first hole provided in a side wall portion of a case, and a first concave surface portion that is provided in a part of an outer surface of the tube expansion portion and forms a first gap, into which brazing material of a first brazed portion advances, between the outer surface of the tube expansion portion and the inner peripheral surface of the first hole. Thus, the attachment strength of the heat transfer tube can be improved by means of a simple configuration.

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Patent Owner(s)

  • NORITZ CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujisawa, Hideyuki Kobe, JP 19 54
Hokada, Yoshinori Kobe, JP 1 5
Kashima, Yukiko Kobe, JP 1 5
Sato, Gaku Kobe, JP 14 50

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