초록 ▼

An improved low NOx burner for firing fuels such as fuel oil, fuel gas and the like having an improved register which includes primary and secondary registers. The primary and secondary registers each have an annular perforated shield covering primary and secondary air inlets. The annular perforated

An improved low NOx burner for firing fuels such as fuel oil, fuel gas and the like having an improved register which includes primary and secondary registers. The primary and secondary registers each have an annular perforated shield covering primary and secondary air inlets. The annular perforated shields form primary and secondary air equalizers which provide a more uniform distribution of combustion air about the register as the combustion air enters the register through primary and secondary air inlets, increasing regulation of combustion air and reducing flame impingement. Annular primary and secondary dampers adjustably cover the primary and secondary air equalizers to slidably adjust the ratio of primary to secondary air entering the primary and secondary registers through the primary and secondary air inlets.

대표청구항 ▼

An air register for use with a fuel burner comprising: primary register means for supplying primary air to an ignition site, the primary register means comprising: a first chamber having a primary air inlet; primary air equalizer means including an annular plate having a plurality of openings extend

An air register for use with a fuel burner comprising: primary register means for supplying primary air to an ignition site, the primary register means comprising: a first chamber having a primary air inlet; primary air equalizer means including an annular plate having a plurality of openings extending over the primary air inlet for distributing the primary air uniformly about the primary inlet; and primary air damper means for adjusting the amount of primary air that can enter the first chamber through the primary air equalizer by controlling the number of openings of the primary equalizer means accessible to the entry of primary air; and secondary register means for supplying secondary air, the secondary register means comprising: a second annular chamber concentrically disposed about the primary register means, the second annular chamber having an annular secondary air inlet; secondary air equalizer means covering the secondary air inlet; and secondary air damper means for adjusting the amount of secondary air that can enter the second annular chamber through the secondary air equalizer means.