Swirl block register design for wall fired burners
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United States of America Patent
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Aug 27, 2013
Grant Date -
Sep 2, 2010
app pub date -
Feb 27, 2009
filing date -
Feb 27, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A simple, economical and reliable swirl register [1000] is described for use with a wall burner of a commercial boiler. It employs a number of spaced swirl blocks [1150] that connect side plates [1110, 1120]. A number of moveable vanes [1130] are provided in the air ducts [1155] created between the swirl blocks [1150]. The vanes [1130] are attached to vane rods [1160] that operate the vanes [1130]. The swirl blocks [1150] are lightweight and rigid structures for holding the side plate [1110] a fixed distance from side plate [1120]. The block construction reduces binding of the vanes [1130] as the swirl register [1000] receives differential heating. The vane rods [1160] extend through a windbox front plate [1250] outside of the windbox area. A linkage assembly [1200] rotates the vane rods [1160]. A motor and gearbox [1230] cause all vanes [1130] to rotate the same amount.
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