Burner tube and venturi for gas grill
The present inventions provide, among other things, tapered burner tubes having raised gas ports and a smooth interior surface free from obstructions. Venturi members creating a smooth flow of the gas/air mixture along the top of the burner tube are also provided.
1. A venturi member for use in a burner tube of a gas grill, the burner tube having a length, a top with gas ports, and a bottom, the venturi member being removable from and attachable to the burner tube, the venturi member comprising:
a front face having a top and a bottom, the front face including an integrally formed opening to accommodate a neck of a gas valve;
a top flange extending rearwardly from the top of the front face;
a bottom flange extending rearwardly from the bottom of the front face, the bottom flange substantially parallel to the top flange;
a downwardly sloping top constricting flange extending rearwardly from the top flange;
an upwardly sloping bottom constricting flange extending rearwardly from the bottom flange, the top constricting flange and the bottom constricting flange converging to form a throat area;
an upper arcuate portion extending rearwardly from the top constricting flange, the upper arcuate portion having a concave shape; and
a lower arcuate portion extending rearwardly from the bottom constricting flange.
2. The venturi member of claim 1 , wherein the top constricting flange is arcuate.
3. The venturi member of claim 1 , wherein the top flange includes a hole.
4. The venturi member of claim 1 , further comprising a stabilizer brace extending between the top constricting flange and the bottom constricting flange.
5. The venturi member of claim 4 , wherein the stabilizer brace is located at the throat area.
6. The venturi member of claim 1 , wherein the lower arcuate portion includes a concave portion and a convex portion.
7. The venturi member of claim 6 , wherein the lower arcuate portion transitions smoothly in an undulating fashion between the concave portion and the convex portion.
8. A burner assembly for a gas grill, the burner assembly comprising:
a burner tube having a length, a top with gas ports, and a bottom;
a venturi member positioned within, removable from, and attachable to the burner tube, the venturi member including:
a front face having a top and a bottom, the front face including an integrally formed opening to accommodate a neck of a gas valve;
a top flange extending rearwardly from the top of the front face;
a bottom flange extending rearwardly from the bottom of the front face, the bottom flange substantially parallel to the top flange;
a downwardly sloping top constricting flange extending rearwardly from the top flange;
an upwardly sloping bottom constricting flange extending rearwardly from the bottom flange, the top constricting flange and the bottom constricting flange converging to form a throat area;
an upper arcuate portion extending rearwardly from the top constricting flange, the upper arcuate portion having a concave shape; and
a lower arcuate portion extending rearwardly from the bottom constricting flange.
9. The burner assembly of claim 8 , wherein the upper arcuate portion is located adjacent the top of the burner tube.
10. The burner assembly of claim 8 , wherein the upper arcuate portion is located adjacent the gas ports.
11. The burner assembly of claim 8 , wherein the upper arcuate portion terminates at a height within the burner tube equivalent to a height of the top flange within the burner tube.
12. The burner assembly of claim 8 , wherein the lower arcuate portion is located adjacent the bottom of the burner tube.
13. The burner assembly of claim 8 , wherein the lower arcuate portion terminates at a height within the burner tube equivalent to a height of the bottom flange within the burner tube.
14. The burner assembly of claim 8 , wherein the lower arcuate portion includes a concave portion and a convex portion.
15. The burner assembly of claim 14 , wherein the lower arcuate portion transitions smoothly in an undulating fashion between the concave portion and the convex portion.
16. The burner assembly of claim 8 , wherein the top constricting flange is arcuate.
17. The burner assembly of claim 8 , wherein the top flange includes a hole.
18. The burner assembly of claim 8 , wherein the venturi member further includes a stabilizer brace extending between the top constricting flange and the bottom constricting flange.
19. The burner assembly of claim 18 , wherein the stabilizer brace is located at the throat area.