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Ceramic heating elements

A heating element and ceramic heating technology, which is applied in the field of ignition elements and ceramic heating elements, can solve the problems of output and cost efficiency limitations

Inactive Publication Date: 2009-07-15
SAINT GOBAIN CERAMICS & PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] While this fabrication method is effective for making ceramic igniters, it has inherent limitations on yield and cost efficiency

Method used

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  • Ceramic heating elements
  • Ceramic heating elements
  • Ceramic heating elements

Examples

Experimental program
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Effect test

Embodiment 1

[0092] Embodiment 1: the making of igniter

[0093] The following materials were mixed to provide a conductive composition for making heating elements via injection molding: 30% by volume MoSi 2 , 7 vol% SiC and 63 vol% Al 2 o 3 , 2 to 3% by weight of polyvinyl alcohol and 0.3% by weight of glycerin based on the weight of the ceramic material.

[0094] The following materials were mixed to provide an insulating composition for making heating elements via injection molding: 10% by volume MoSi 2 , 90% Al by volume 2 o 3 , 2 to 3% by weight of polyvinyl alcohol and 0.3% by weight of glycerin based on the weight of the ceramic material.

[0095] The following materials were mixed to provide a resistive hot zone composition for making a heating element via injection molding: 25% by volume MoSi 2 , 5 vol% SiC and 70 vol% Al 2 o 3 , 2 to 3% by weight of polyvinyl alcohol and 0.3% by weight of glycerin based on the weight of the ceramic material.

[0096] In each of the three...

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Abstract

New methods are provided or manufacture ceramic resistive igniter elements that include sintering of the elements in the absence of substantially elevated pressures. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.

Description

[0001] This application claims priority to US Provisional Patent Application Serial No. 60 / 798,266, filed May 4, 2006, the entire contents of which are incorporated herein by reference. technical field [0002] In one aspect, the present invention provides a novel method of making a ceramic heating element comprising substantially pressureless sintering a formed bad body ignition element. The present invention also provides an ignition element comprising the elements produced by the manufacturing method of the present invention. Background technique [0003] Ceramic materials work very well for igniters such as natural gas fired furnaces, stoves and clothes dryers. The ceramic igniter manufacturing process involves building an electrical circuit from a ceramic composition, a portion of which has high electrical resistance and whose temperature increases when a wire energizes it. As shown in US Patent Nos. 6,582,629; 6,278,087; 6,028,292; 5,801,361; 5,786,565; 5,405,237; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23Q7/22
CPCH05B2203/027F23Q7/22H05B3/141C04B35/117C04B2235/3826C04B2235/3891C04B35/63416C04B35/632C04B2235/6022C04B2235/5436C04B35/638C04B35/6455C04B2235/661B32B18/00C04B2235/77C04B2237/343
Inventor 余泰桓S·安纳瓦雷普
Owner SAINT GOBAIN CERAMICS & PLASTICS INC