US 6,146,130 A · Compound burner vane

Abstract

A compound spin vane (CSV) for use in an air passage of a fossil fuel-fired burner. In one embodiment, the CSV is a multi-piece construction of platelike outer and inner vane elements connected to an intermediate platelike rail element. In another embodiment, the CSV includes at least two and possibly three vane portions, rigidly interconnected in spaced lateral relationship with respect to each other. If desired, the vane portions may be simple, curved planar surfaces, and may be arranged with trailing edges arranged at angles with respect to each other. The invention may be employed as a replacement for flat spin vanes found in secondary air passages of known single and dual register burners. When used in such manner in a single register burner, the invention changes secondary air flow characteristics so as to mimic those commonly found in a dual register burner.

Claims15

Dependent claims

A multi-piece vane for use in a secondary air passage of a fossil fuel-fired burner, comprising:

a platelike rectangular-shaped rail element having an outer and an inner face, such that when the vane is used in the secondary air passage the outer face is directed toward an outer wall of the secondary air passage and the inner face is directed toward an inner wall of the secondary air passage;
a platelike outer vane element which has a base edge, leading and trailing edges and an outer edge, and which is fastened at the outer vane base edge to the outer face of the rail element;
a platelike inner vane element which also has a base edge, leading and trailing edges and an outer edge, and which is fastened at the inner vane base edge to the inner face of the rail element;
and
wherein the outer vane element runs longitudinally across the outer face of the rail element and the inner vane element runs diagonally across the inner face of the rail element.

2 more elements

A fossil-fueled burner apparatus having means for providing a fossil fuel to an outlet end of the burner apparatus for combustion, a single annular air flow passage partially defined between an inner wall and an outer wall of the burner apparatus, and an arrangement of multi-piece spin vanes installed and positioned within the annular air flow passage for imparting a spin to combustion air flowing through the annular air flow passage, each of the multi-piece spin vanes comprising:

a platelike rail element having an outer and an inner face, oriented in the air passage such that the outer face is directed toward an outer wall of the air passage and the inner face is directed toward an inner wall of the air passage;
a platelike outer vane element which has a base edge, leading and trailing edges and an outer edge, and which is fastened at the outer vane base edge to the outer face of the rail element;
a platelike inner vane element which also has a base edge, leading and trailing edges and an outer edge, and which is fastened at the inner vane base edge to the inner face of the rail element;
and
wherein the outer vane element runs longitudinally across the outer face of the rail element and the inner vane element runs diagonally across the inner face of the rail element.

2 more elements

Dependencies are inferred from the claim text.

Compound burner vane

Life of this patent

Compound burner vane

Life of this patent

Abstract

Claims15