Resistive honeycomb heater having locally quickly heated regions

Electric resistance heating devices – Heating devices – Continuous flow type fluid heater

Patent

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Details

219552, 60300, 422174, F01N 328, H05B 300

Patent

active

056510888

ABSTRACT:
A honeycomb heater including a honeycomb structure, two electrodes and a plurality of slits extending through the honeycomb structure. The slits are provided to elongate a current flow path through the honeycomb structure and to define a plurality of first regions of partition walls and at least one second region of partition walls. The first regions are locally quickly heated with respect to at least one second region upon electrification of the honeycomb structure, and the first regions are spaced apart from each other. In addition, the first regions in total extend over an area 5 to 50% of a total cross-sectional area of the honeycomb structure. Alternatively, the honeycomb structure may include at least one first region and a plurality of second regions, the second regions being spaced apart by the at least one first region.

REFERENCES:
patent: 5063029 (1991-11-01), Mizuno et al.
patent: 5194229 (1993-03-01), Abe et al.
patent: 5202548 (1993-04-01), Kondo et al.
patent: 5229079 (1993-07-01), Harada et al.
patent: 5234668 (1993-08-01), Harada et al.
patent: 5254840 (1993-10-01), Thompson
patent: 5393586 (1995-02-01), Lipp
patent: 5399841 (1995-03-01), Abe et al.

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