Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Patent
1997-02-05
1999-02-02
Tran, Hien
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
422179, 422180, 422199, 422221, 422222, 60300, F01N 310
Patent
active
058660771
ABSTRACT:
A honeycomb support structure of an electrically-heated catalyst apparatus is disclosed, in which a support member of retainers for preventing an electrically-heated catalyst moving backward is coupled to an outer cylinder while causing the support member to follow the thermal deformation of the outer cylinder thereby to suppress the deformation of the support member due to the thermal stress. A metal foil laminate having a corrugated foil and a tabular foil superposed one on the other is spirally wound to form a cylindrical honeycomb unit, which is accommodated in a metal outer cylinder and is heated by being supplied with power. The honeycomb unit support structure includes a plurality of ceramic bars and at least a support member having a plurality of recesses for holding the ceramic bars at such a position as to traverse the end surface of the honeycomb unit downstream of the exhaust gas flow and in such a manner as to follow the deformation of the outer cylinder. The structure of the support member that can follow the deformation can be realized by preparing a cylindrical metal plate and forming at least a gap in the cylindrical metal plate. Consequently, the honeycomb unit is prevented from telescoping, a uniform temperature distribution in the support member is assured, and the durability of the support member is improved.
REFERENCES:
patent: 5149508 (1992-09-01), Bullock
patent: 5169604 (1992-12-01), Crothers, Jr.
patent: 5232671 (1993-08-01), Brunson et al.
patent: 5323608 (1994-06-01), Honma
Kako Takuzou
Sakurai Kazuhiro
Nippon Steel Corp.
Toyota Jidosha & Kabushiki Kaisha
Tran Hien
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