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US 2002/0055079 A1Published application
Tubular burner
AssigneeBray Burners Ltd.
InventorsGraham Wood, Edward Hart
Life of this patent
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AssigneeBray Burners Ltd.
InventorsGraham Wood, Edward Hart
Estimating the term…
The invention describes a tubular burner consisting of a cylindrical tubular body initially open at either end into which a distributor component can be slidingly fitted. The tubular body is provided with rows of apertures over a narrow area of the uppermost surface thereof to give the burner a flame strip. The distributor is substantially the same axial length as the tubular burner body but of smaller cross-sectional dimension than said body allowing for sliding fitment of the distributor inside the burner body. In accordance with the invention, the distributor has a first tubular portion and a second extension portion which is effectively a continuation of the upper surface of said first tubular portion, and both the tubular portion and extension portion of the distributor are provided with axially aligned flanges on either aide having a number of perforations. As the distributor is slid axially along the tubular burner body, the edges of the flanges engage with the inner walls of the tubular burner body and thus divide the burner body into an upper and lower chamber, the combustible air/gas mixture emerging from the tubular portion of the distributor into the lower chamber and subsequently being urged upwardly through the apertures in said flanges into the upper chamber before passing through the flame ports for combustion on the upper surface of said tubular body. The invention also relates to a distributor for use in such a burner.
1] A tubular burner comprising a tubular body being axially long in comparison to the dimensions of said cross-section, said body having an outer surface over an axially aligned portion of which is provided a plurality of perforations which portion constitutes the flame strip of said burner immediately beneath which an upper region of the burner is partially defined internally of said tubular body, said burner further comprising an elongate distributor of substantially the same axial length as the tubular burner body and being of smaller cross-sectional dimension than said body allowing for sliding fitment of said distributor therein, said distributor having a first tubular portion opening proximate one end of said burner body into which combustible fluid can be introduced, said first tubular portion having an upper surface which together with the flame strip defines the upper region of said burner tubular body, and a second extension portion which is effectively a continuation of the upper surface of said first tubular portion and thus also defines the upper region of said body and constrains fluid emerging from the tubular portion to flow therebeneath, wherein both tubular portion and extension portion of the distributor are provided with axially aligned flanges having a number of perforations therein, said flanges contacting the inner walls of the burner body to effectively divide the inside of the burner body into said upper region immediately underneath the flame strip and a lower region into which combustible fluid is urged from the tubular portion of said distributor, said fluid passing from the lower region into the upper region through said perforations.
2] A burner according to claim 1 wherein the cross sections of the tubular body and distributor are predominantly arcuate.
3] A burner according to claim 2 wherein the cross section of the tubular burner body and the tubular portion of the distributor are circular, the extension portion of said distributor being hemi-cylindrical.
4] A burner according to claim 1 wherein the flanges of the distributor are provided on opposite sides of said distributor tubular portion and extension portion.
5] A burner according to claim 4 wherein the flanges of the distributor are co-planar.
6] A burner according to claim 1 wherein the tubular burner body is open at either end and the distributor is provided with a cap secured to the free end of said extension portion, said cap having dimensions corresponding to the dimensions of the tubular burner body to allow for both sliding fitment of said distributor within said body and sealing attachment of said cap to one of said open ends of said body.
7] A burner according to claim 1 wherein the distributor consists of a cap portion to which is welded a hemi-cylindrical elongate section having a longitudinal axis substantially coincident with the longitudinal axis of the burner body, said section being orientated so that its zenith is directly beneath an axially parallel line bisecting the flame strip, and a tubular portion secured within the hemi-cylindrical section having a first end coincident with a free end of the hemi-cylindrical section and a second end opening part way along said hemi-cylindrical section.
8] A burner according to claim 7 wherein the hemi-cylindrical section is welded to the cap which is in turn sealingly secured to said burner body.
9] A distributor for sliding insertion within a tubular burner body, said distributor being substantially the same axial length as the tubular burner body and being of smaller cross-sectional dimension than said body allowing for sliding fitment of said distributor therein, said distributor having a first tubular portion and a second extension portion which is effectively a continuation of the upper surface of said first tubular portion, wherein both tubular portion and extension portion of the distributor are provided with axially aligned flanges having a number of perforations therein.