Title:
HEAT TRANSFER FIN
Document Type and Number:
Japanese Patent JP2020063896
Kind Code:
A
Abstract:
To provide a heat transfer fin for a heat exchanger which can efficiently transfer heat of combustion exhaust gas to a heat medium flowing within a heat exchange tube.SOLUTION: A plate-like heat transfer fin 1 includes a plurality of heat exchange tube through holes 10 arranged in parallel in a single stage, a downstream side notch part 3 recessed at an upstream side, a downstream side flange 13 provided in a rim of the downstream side notch part 3, and a plurality of first projection pieces 4a, 4b, 4c formed between the heat exchange tube through holes 10 and the downstream side flange 13 so as to alternately protrude on both surfaces of the heat transfer fin 1.SELECTED DRAWING: Figure 3
Inventors:
KIMURA GU
Application Number:
JP2018236249A
Publication Date:
April 23, 2020
Filing Date:
December 18, 2018
Export Citation:
Assignee:
RINNAI KK
International Classes:
F28F1/32; F24H9/00; F28D7/16
Domestic Patent References:
| JP2018096622A | 2018-06-21 | |||
| JPH09203532A | 1997-08-05 | |||
| JPH0949641A | 1997-02-18 |
Foreign References:
| US20130264038A1 | 2013-10-10 |
Attorney, Agent or Firm:
Eiji Miyazaki
Tomohiro Harada
Tomohiro Harada