초록 ▼

Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the cent

Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen.

대표청구항 ▼

[ What is claimed is:] [1.] A mechanical swirler, comprising:a central passage having an entrance for accepting a premixed feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage without said flow balancing insert, and an exit aligned t

[ What is claimed is:] [1.] A mechanical swirler, comprising:a central passage having an entrance for accepting a premixed feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage without said flow balancing insert, and an exit aligned to direct said feed gas into a combustor; andan annular passage about said central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting said annular passage; andwherein said swirler does not induce recirculation in said feed gas.