Rich-lean combustion burner and combustion apparatus
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United States of America Patent
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Aug 25, 2015
Grant Date -
Jun 13, 2013
app pub date -
Dec 7, 2012
filing date -
Dec 9, 2011
priority date (Note) -
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Abstract
In a rich-lean combustion burner, each of outer rich-side flame holes disposed on both outer sides is supplied with rich-side mixture in the same amount and mixing state as the others. A lower end part of a central rich-side burner part is projected into an interior of a tubular part to which a rich-side mixture is introduced. First communication holes are opened, respectively, in both side walls of the lower end part. A second and a third communication holes in fluid communication with an outer rich-side burner part are opened in a tubular part. The second and the third communication holes are oriented so as to face each other without any obstruction, other than a space, therebetween. Furthermore, a pocket part which is a space part adapted to collect and accumulate dust particles is formed on the downstream side up to a closed end.
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