Integrated thin high temperature heaters
First Claim
1. An integrated heater capable of high temperature operation comprising:
- a substrate that is coated with a suitable electrically insulating coating;
a resistive heating element which is one of a foil, ribbon or wire, placed on top of the electrically insulating coating; and
a high temperature insulating material which is used to affix the heating element up against the coated substrate by sandwiching the heating element between the coated substrate and the insulating material to keep the heating element in close contact with the coated substrate.
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Abstract
This invention relates to integrated heaters for use in a wide range of consumer and industrial applications. The integrated heater capable of high temperature operation includes a substrate that is coated with a suitable electrically insulating coating, a resistive heating element which may be a foil, ribbon or wire, placed on top of the electrically insulating coating, and a high temperature insulation material which is used to affix the heating element up against the coated substrate by sandwiching the heating element between the coated substrate and the insulating material and keep the heating element in close contact with the coated substrate. The insulating layer is able to provide both electrical insulation and efficient thermal transfer. This resulting integrated heating element is able to meet the regulatory electrical insulation requirements and is capable of operation in excess of 600° C. The element can also survive being repeatedly thermally cycled between room temperature and the specified operating temperature.
10 Citations
38 Claims
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1. An integrated heater capable of high temperature operation comprising:
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a substrate that is coated with a suitable electrically insulating coating;
a resistive heating element which is one of a foil, ribbon or wire, placed on top of the electrically insulating coating; and
a high temperature insulating material which is used to affix the heating element up against the coated substrate by sandwiching the heating element between the coated substrate and the insulating material to keep the heating element in close contact with the coated substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An integrated glass ceramic heating element capable of high temperature operation comprising:
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a glass ceramic substrate coated with at least 400 microns of sol gel composite alumina/silica layer;
a resistive heating element which is made by etching a metal foil and is placed on top of the sol gel composite alumina/silica layer; and
a high temperature insulating material which is used to affix the heating element up against the coated substrate by sandwiching the heating element between the coated substrate and the insulating material to keep the heating element in close contact with the coated substrate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An integrated glass ceramic heating element capable of high temperature operation comprising:
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a glass ceramic substrate coated with at least 400 microns of sol gel composite alumina/silica layer;
a resistive heating element which is made by etching a metal foil and is placed on top of the sol gel composite alumina/silica layer;
mechanical coupling means for pressing the etched foil resistive heating element so that it is in direct contact with the sol gel composite alumina/silica layer coated glass ceramic substrate. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification