Title:
A heat exchanger and a hot-water supply machine
Document Type and Number:
Japanese Patent JP6236784
Kind Code:
B2
Abstract:
A fin (13) includes a cut and raised slit (13b) and a cut and raised wall portion (13a). The cut and raised slit (13b) is formed in a region (RA) adjacent to at least one through hole (13ca) of a plurality of through holes (13ca) in a first direction (DA) and has a tunnel-shaped hole (13ba1, 13bb1, 13bc1) extending in a second direction (DB) intersecting the first direction (DA). The cut and raised wall portion (13a) is located in the second direction (DB) of the cut and raised slit (13b), protrudes toward a main surface (MS) of the fin (13), and extends along the first direction (DA). Thus, a heat exchanger and a water heater capable of sufficiently conducting an amount of heat of a combustion gas to a heat conduction pipe even in a blind spot of a flow of the combustion gas of the heat conduction pipe and suppressing noise can be realized.
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Inventors:
Ken Daito
Application Number:
JP2013002634A
Publication Date:
November 29, 2017
Filing Date:
January 10, 2013
Export Citation:
Assignee:
Noritsu Co., Ltd.
International Classes:
F24H1/14; F28F1/32; F24H9/00; F28D1/047
Domestic Patent References:
| JP60082783A | ||||
| JP9189493A | ||||
| JP2007309533A | ||||
| JP2004077021A | ||||
| JP2002228266A | ||||
| JP2000227294A | ||||
| JP2011033227A |
Foreign References:
| US20070151716 | ||||
| WO2011033767A1 |
Attorney, Agent or Firm:
Fukami patent office