초록 ▼

A burner for producing exhaust gases that are low in nitrogen oxides, carbon monoxide and unburned hydrocarbons. The burner is divided into a combustion zone and a dilution zone and means are provided for splitting the air input to direct a first stream of air to the combustion zone and a second str

A burner for producing exhaust gases that are low in nitrogen oxides, carbon monoxide and unburned hydrocarbons. The burner is divided into a combustion zone and a dilution zone and means are provided for splitting the air input to direct a first stream of air to the combustion zone and a second stream of air to the dilution zone.

대표청구항 ▼

A burner having particular suitability in providing exhaust gases having a low content of nitrogen oxides and carbon monoxide, said burner comprising: a burner body defining a combustion zone and a dilution zone positioned downstream from said combustion zone; a burner wall defining first apertures

A burner having particular suitability in providing exhaust gases having a low content of nitrogen oxides and carbon monoxide, said burner comprising: a burner body defining a combustion zone and a dilution zone positioned downstream from said combustion zone; a burner wall defining first apertures adjacent the combustion zone and second apertures adjacent the dilution zone; means to ignite a mixture of fuel and air in the combustion zone; means to simultaneously vary the extent of the opening through the first apertures while varying the extent of the opening through the second apertures so as to change the extent of the opening through the first apertures with respect to the extent of the opening through the second apertures; an air passage leading to said first and second apertures; means to separate the incoming air within said air passage into a first stream leading to said first apertures and a second stream leading to said second apertures; fuel injection means to inject fuel into said first stream, and a mixing region within said first stream in which the air in the first stream is admixed with the fuel to form a substantially homogeneous fuel-air mixture which is fed through said first apertures into the combustion zone, whereby incoming air within said air passage is fed through said first apertures to the combustion zone with the extent of the opening to the first apertures and the extent of the opening through the second apertures being varied to determine the fuel-air ratio within the combustion zone.