Structure for electrically heatable catalytic core

Details Structure for electrically heatable catalytic core Structure for electrically heatable catalytic core

1990-12-12

1992-12-29

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422180, 55DIG30, 60299, 60300, 502439, 502527, F01N 328

Patent

active

051749688

ABSTRACT:
There is provided an improved electrically heatable core for an electrically heatable catalytic converter. The core is characterized by corrugated thin metal strips and flat thin metal strips in alternating relation with each other and secured to an electrically conductive central core or tube. Alternating with the corrugated thin metal strips and the flat thin metal strips are areas of brazing metal in an axially staggered pattern. These strips are spirally wound and fused to braze them together in a unified monolith. A retainer shell is supplied to hold the monolith together. The core is placed in a housing fitted with insulated means for conducting electric current to the monolith to effect heating. The housing is then inserted in an exhaust line where it is effective to control start-up pollution, and where the monolith is constrained against telescoping.

REFERENCES:
patent: 3770389 (1973-10-01), Kitzner
patent: 4381590 (1983-05-01), Nonnenmann et al.
patent: 4777158 (1988-10-01), Cyron
patent: 4928485 (1990-05-01), Whittenberger
patent: 5070694 (1991-12-01), Whittenberger

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