发明申请
- 专利标题: Water Heater
- 专利标题(中): 热水器
-
申请号: US11661263申请日: 2005-12-16
-
公开(公告)号: US20080006226A1公开(公告)日: 2008-01-10
- 发明人: Nobuhiro Takeda , Hiroshi Asakura , Akira Tsutsumi , Kazuhiro Kimura , Shuji Kameyama , Keiichi Amada , Hironao Matsunaga
- 申请人: Nobuhiro Takeda , Hiroshi Asakura , Akira Tsutsumi , Kazuhiro Kimura , Shuji Kameyama , Keiichi Amada , Hironao Matsunaga
- 申请人地址: JP Kobe 650-0033
- 专利权人: NORITZ CORPORATION
- 当前专利权人: NORITZ CORPORATION
- 当前专利权人地址: JP Kobe 650-0033
- 优先权: JP2004-372321 20041222
- 国际申请: PCT/JP05/23155 WO 20051216
- 主分类号: F24H1/00
- IPC分类号: F24H1/00
摘要:
A secondary heat exchanger B for recovering latent heat from combustion gas includes water tubes 5 each of which is so inclined that a first end 50a is positioned lower than a second end 50b. Therefore, in draining water from each of the water tubes 5, water can be caused to flow smoothly into a water-inflow and hot-water-outflow header 6A connected to the first ends 50a. The secondary heat exchanger B includes a casing 7 which includes an upper wall 70a and a bottom wall 70b which are so inclined that the inner surfaces thereof extend generally in parallel with the water tubes 5, and the upper and the lower gaps 79a and 79b have constant widths s2 and s3. Therefore, the amount of heat recovery from the combustion gas passing through the gaps 79a and 79b can be increased.
公开/授权文献
- US07458340B2 Water heater 公开/授权日:2008-12-02