Title:
WATER HEATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/066386
Kind Code:
A1
Abstract:
This water heating device WH comprises: a heat exchanger H2 having a case 5 to which heating air is supplied, and heat transfer piping 6a accommodated inside the case; and a straightening vane 4 arranged on the downstream side in the flow direction of the heating air in the heat transfer piping 6a, the straightening vane 4 having a plurality of vent holes 40 provided thereto. The heat transfer piping 6a includes a plurality of pipe body parts 60a that extend along a direction intersecting the heating air flow direction and approach the straightening vane 4. The plurality of vent holes 40 are arranged so as to overlap the plurality of pipe body parts 60a in the heating air flow direction. According to this configuration, the heating air wraps around the pipe body parts 60a toward the downstream side in the heating air flow direction and effectively acts on the pipe body parts 60a, increasing the amount of heat absorbed by the heat transfer piping 6a from the heating air and improving thermal efficiency.
Inventors:
SHIOTSU NAOYA (JP)
KONDO MASAKI (JP)
KONDO MASAKI (JP)
Application Number:
PCT/JP2019/032780
Publication Date:
April 02, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
NORITZ CORP (JP)
International Classes:
F24H9/00
Foreign References:
| JP2000227255A | 2000-08-15 | |||
| JPH07146003A | 1995-06-06 | |||
| JPH09189491A | 1997-07-22 | |||
| JPS54153433U | 1979-10-25 | |||
| JP2003509650A | 2003-03-11 |
Attorney, Agent or Firm:
TSUTSUI Masato (JP)
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