Title:
GAS FLOW PASSAGE
Document Type and Number:
Japanese Patent JP3679183
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate the damage due to foreign matter in a gas flow and to obtain the durability over a long period of time in a gas flow passage of an internal combustion engine or the like by providing a flow direction changing means for directing the flow direction of a gas flow toward the outer periphery direction of the flow passage and providing a foreign matter catching means having an opening in the upstream direction of the gas flow.
SOLUTION: In a gas flow passage 1 through which solid such as metallic pieces and liquid such as water may be passed as foreign matter, a catalyst carrier of honeycomb structure of an exhaust gas purifier is installed in the gas flow passage 1 as a structural body 3 by using a supporting material 2. A taper grid 5 consisting of plural plates having a taper directed toward the outer periphery direction from the center as a flow direction changing means for directing the flow direction of the gas flow 4 toward the wall surface of the flow passage. On the downstream side of the taper grid 5 and on the upstream side of the structural body 3, a pocket-like receiving tray 6 having an opening 6a in the upstream direction of the gas flow 4 as a foreign matter catching means is provided so that a double-pipe structure may be constituted of it and the wall surface of the gas flow passage 1 over the whole circumference of the inner wall of the gas flow passage 1.
Inventors:
Masaru Kojima
Toshio Yamada
Toshio Yamada
Application Number:
JP1534396A
Publication Date:
August 03, 2005
Filing Date:
January 31, 1996
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
B01D45/08; B01D45/12; B04C3/00; F01N3/08; F01N3/20; F01N3/28; F15D1/02; F16L55/24; (IPC1-7): B01D45/12; B04C3/00; F15D1/02; F16L55/24
Domestic Patent References:
| JP49070271A | ||||
| JP60147267A |
Attorney, Agent or Firm:
Kosaku Sugimura
Norita Tomita
Umemoto Masao
Junko Sugimura
Hiroshi Tokunaga
Kazuaki Takami
Juno Aoki
Mitsuo Nakatani
Shiro Fujitani
Norita Tomita
Umemoto Masao
Junko Sugimura
Hiroshi Tokunaga
Kazuaki Takami
Juno Aoki
Mitsuo Nakatani
Shiro Fujitani
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