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US 2009/0025659 A1Published application
Boiler
AssigneeMiura Co., Ltd.
InventorsTomohiro Ookubo, Kyousuke Ookubo, Keiichi Hiraoka, Soji Sumi
Life of this patent
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Abstract
Provided is a boiler including: a plurality of heat transfer tubes arranged to form a cylindrical shape between an upper header and a lower header to constitute a heat transfer tube row; and a plurality of longitudinal fins provided to close gaps between the heat transfer tubes without connecting the adjacent heat transfer tubes, the plurality of longitudinal fins being provided to a portion other than one of one end in a vertical direction of the heat transfer tube row and a part in a peripheral direction thereof.
Claims5
A boiler comprising:
- a plurality of heat transfer tubes arranged to form a cylindrical shape between an upper header and a lower header to constitute a heat transfer tube row;
- and
- a plurality of longitudinal fins provided to close gaps between the plurality of heat transfer tubes without connecting the adjacent heat transfer tubes, the plurality of longitudinal fins being provided to a portion other than one of one end in a vertical direction of the heat transfer tube row and a part in a peripheral direction thereof.
A boiler comprising:
- a plurality of heat transfer tubes arranged adjacent to each other;
- and
- a longitudinal fin provided between the adjacent heat transfer tubes, wherein:
- one end of the longitudinal fin is fixed to one of the adjacent heat transfer tubes;
- and
- another end of the longitudinal fin abuts on another of the adjacent heat transfer tubes owing to thermal expansion by combustion of a fuel in a combustion chamber.
3 more elements
Dependencies are inferred from the claim text.