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US 10,767,862 B2Granted
Flame rod
AssigneeRinnai Corporation
InventorsTakashi Ojiro, Kazuyuki Akagi, Masaru Takeuchi, Yoshinari Iwata, Yoshiaki Miyajima
Life of this patent
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Abstract
A flame rod (1) including: a rod portion (11) made of a metal material containing aluminum; and a protective cover layer (21) containing a cover material having high conductivity and high heat resistance, wherein the protective cover layer (21) covers a surface of an insertion portion (11A) of the flame rod (11), and the protective cover layer (11) has a thickness of 0.002 mm or more and less than 0.1 mm.
Claims5
A flame rod comprising:
- a rod portion made of a metal material containing aluminum;
- and
- a protective cover layer containing a cover material having high conductivity and high heat resistance, wherein
- the protective cover layer covers a surface of at least an insertion portion of the rod portion, the insertion portion being inserted into flame,
- the protective cover layer has a thickness of 0.002 mm or more and less than 0.1 mm, and
- the rod portion has a groove extending from the insertion portion to a non-insertion portion on the surface thereof, the non-insertion portion being disposed outside the flame.
3 more elements
A flame rod comprising:
- a rod portion made of a metal material containing aluminum;
- a protective cover layer containing a cover material having high conductivity and high heat resistance, the cover material containing lanthanum-strontium-manganese oxide;
- and
- an alumina layer and an alumina-manganese compound layer in order from a rod portion side at an interface between the rod portion and the protective cover layer, wherein
- the protective cover layer covers a surface of at least an insertion portion of the rod portion, the insertion portion being inserted into flame, and
- the protective cover layer has a thickness of 0.002 mm or more and less than 0.1 mm.
3 more elements
Dependencies are inferred from the claim text.