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AssigneeFerro Techniek Holding B.V.
InventorsReinardus Hermanus Bernardus Deenen, Willem Antoon Bernard Nijman, Johannes Gerardus Maria Gelinck, Martijn Van Dongen, Gradus Johannes Kloppers, Robert Henry Hadfield
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The invention relates to a combination of an electrical heating element and a heat dissipater to be heated thereby; the heating element comprises a substrate, an insulating layer located on the substrate and a thick film conductor located on the insulating layer, wherein the second side of the metallic substrate is in contact with the heat dissipater, comprising a layer of metallic material on its face towards the heater and wherein the substrate is brazed to the heat dissipater and the surface of the heating element over which the thick film conductor extends, is substantially equal to the surface of the heat dissipater. The brazing leads to a permanent contact between the heating element and the heat dissipater, so that the possible tendency for warping as caused by the heating and cooling cycles will be withstood.
A flow-through heater comprising at least one first thick film electrical heating element having a metallic substrate, and a channel plate joined to the metallic substrate to form a channel therebetween, wherein adjacent portions of the channel are separated by substantially planar contact portions of the channel plate, which are secured to the substrate, wherein the heater comprises a sensor track arranged solely opposite to the substantially planar contact portions and a resistor track arranged solely opposite to the channel.
A method of producing a thick film flow-through heater, comprising joining a channel plate to the metallic substrate of at least one first thick film heating element so as to form a channel therebetween, wherein adjacent portions of the channel are separated by substantially planar contact portions of the channel plate, which are secured to the substrate, wherein the substrate includes a sensor track arranged solely opposite to the substantially planar contact portions and a resistor track arranged solely opposite to the channel.
Dependencies are inferred from the claim text.