Cooking gas burner

• US 8,887,710 B2
• Filed: 10/27/2005
• Issued: 11/18/2014
• Est. Priority Date: 10/28/2004
• Status: Active Grant

• Current Assignee: Aktiebolaget Electrolux
• Original Assignee: Aktiebolaget Electrolux
• Inventors: Rossi, Carlo, Rossi, Marco
• Primary Examiner(s): Rinehart, Kenneth
• Assistant Examiner(s): Corboy, William
• Application Number:
  US11/577,874
• Publication Number:
  US 20080210216A1
• Time in Patent Office: 3,309 Days
• Field of Search: 126/1.R, 126/39.R, 126/39.A, 126/39.B, 126/39.C, 126/39.E, 431/354, 431/263, 431/264, 431/265, 431/266, 431/278, 431/283, 431/285, 431/286, D74/07
• US Class Current: 126/39.E
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 14/065 with injector axis inclined to the burner head axis
• CPC Class Codes: F23D 2900/14062 for cooking ranges having multiple flame rings
• CPC Class Codes: F24C 3/085 on ranges
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

The present invention provides a cooking gas burner assembly including a distributor (30), a gas manifold (50) and a cup (40), the cup (40) being located between the gas manifold (50) and the distributor (30). The gas manifold is spaced from the cup. The invention provides a burner assembly having at least a cap (220) and a distributor (30) on which the cap (220) is mounted, the distributor (30) including an internal and an external crown of flame ports, and at least one cross lighting passage (37) there between. The cap (220) includes an aperture (222) there through, which is adapted to be positioned over the cross lighting passage (37) when the cap (220) and distributor (30) are assembled.

Claims

1. A cooking gas burner assembly including a distributor (30), a gas manifold (50) and a cup (40), said gas manifold (50) including at least one gas inlet and a plurality of gas outlets to deliver supply gas to said distributor (30), said cup (40) being in contact with a hob (141) of a cooking appliance and located between said gas manifold (50) and said distributor (30), wherein said gas manifold (50) is spaced from said cup (40) by at least one post (70,72,74) extending vertically between said manifold (50) and said cup (40), and wherein the cup (40) forms a shield between the manifold (50) and the distributor (30) that reduces conductive heat transfer from the distributor (30) to the manifold (50);

wherein said distributor (30) includes downwardly extending spigots (32) to engage said cup (40), each spigot (32) defined by a truncated conical geometry with a sidewall and an end surface;

wherein said cup (40) includes a plurality of discrete, enclosed concave recesses (48) that each receive one of said spigots (32), wherein the enclosed recesses (48) are elliptical in cross section and each enclosed recess (48) having two surfaces is defined by an interior sidewall surface and a base surface that supports the end surface of the spigot (32);

wherein the sidewall of the spigot (32) is provided at a first angle relative to the base surface and the sidewall surface of the enclosed recess (48) is provided at a second angle relative to the base surface that is different from the first angle so that as said distributor (30) changes dimensions during use due to thermal expansion, limiting contact between the sidewall of the spigot (32) and the sidewall surface of the enclosed recess (48) due to the difference between the first and second angles; and

wherein said enclosed recess (48) has an elongated shape.

2. A cooking gas burner as claimed in claim 1, wherein said distributor (30) includes a primary air and gas supply mixing means (35).

3. A cooking gas burner as claimed in claim 2, wherein said distributor (30) includes apertures (34) therein to allow primary air to be drawn into said mixing means (35).

4. A cooking gas burner as claimed in claim 2, wherein said cup (40) forms the underside of a passage which allows primary air to be drawn into said mixing means (35).

5. A cooking gas burner as claimed in claim 1, wherein said gas manifold (50) and said cup (40) are spaced from each other by a plurality of posts (70,72,74) extending vertically between said manifold (50) and said cup (40).

6. A cooking gas burner as claimed in claim 5, wherein said distributor (30) includes a primary air and gas supply mixing means (35) and at least one of said posts (70) includes a wall of at least one upwardly directed passage (71) from said manifold (50) by which said manifold (50) delivers supply gas to said mixing means (35).

7. A cooking gas burner as claimed in claim 1, wherein the minimum spacing between said manifold (50) and said cup (40) is approximately 5 millimeters.

8. A cooking gas burner as claimed in claim 1 wherein said distributor (30) has a contact area (47) with said cup (40) of between 5 to 20 square millimeters.

9. A cooking gas burner as claimed in claim 1, wherein said distributor (30) includes a skirt therearound, said skirt (33) including apertures (34), whereby a bottom edge of said apertures (34) is provided by said cup (40).

10. A cooking gas burner as claimed in claim 9, wherein the lower most rim of said skirt (33) is spaced from said cup (40) by between 5 and 15 millimeters.

11. A cooking gas burner as claimed in claim 1 wherein said manifold (50) has a two piece construction.

12. A cooking gas burner as claimed in claim 11, wherein said gas manifold (50) has a body portion (52) having a generally planar construction.

13. A cooking gas burner as claimed in claim 1, wherein at locations of contact between said distributor (30) and said cup (40), and or between said cup (40) and said manifold (50), there are provided heat insulating members (200).

14. A cooking gas burner as claimed in claim 1 wherein said cup (40) provides a means to secure said cooking gas burner to said hob (141) of a cooking appliance.

15. A cooking gas burner as claimed in claim 1, wherein said cup (40) is integrally formed in said hob (140) of a cooking appliance.

16. A cooking gas burner as claimed in claim 1, wherein said spigots (32) terminate in one of:

a point;

a flat surface;

a part spheroidal surface.

17. A cooking gas burner as claimed in claim 1 wherein the elongated shape has a major axis which substantially lies on or is substantially parallel to a virtual radius emanating from a centre of said burner.

18. A cooking gas burner as claimed in claim 1 wherein said enclosed recesses (48) have an elongated, generally horizontal base (246), said base (246) being of the same general shape as said enclosed recess (48).

19. A cooking gas burner as claimed in claim 1 wherein said enclosed recesses (48) and said spigots (32) each have a tapered construction.

20. A cooking gas burner as claimed in claim 19, wherein said enclosed recesses (48) have a shallower taper than said spigots (32).

21. A cooking gas burner as claimed in claim 1 wherein said spigots (32) are able to slide over a surface of said cup (40).