Gas burner for outdoor cooking

• US 6,589,046 B2
• Filed: 07/02/2002
• Issued: 07/08/2003
• Est. Priority Date: 08/21/2001
• Status: Expired due to Fees

• Current Assignee: Designgasparts, Inc.
• Original Assignee: Uwe Harneit
• Inventors: Harneit, Uwe
• Primary Examiner(s): Price, Carl D.
• Application Number:
  US10/188,606
• Publication Number:
  US 20030039935A1
• Time in Patent Office: 371 Days
• Field of Search: 431/349, 431/354, 431/266, 431/286, 126/39.R, 126/39.E, 126/39.BA, 126/41.R, 239/552, 239/556, 239/559, 239/567
• US Class Current: 431/266
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 14/26 with provision for a retention flame pilot flame igniters F23Q9/00
• CPC Class Codes: F23D 14/74 Preventing flame lift-off
• CPC Class Codes: F24C 3/085 on ranges

Abstract

A multi piece gas burner assembly that is machined or cast and having a burner base that contains holes for primary air where the hole dimensions do not exceed the height of a jet mounted therein. The burner base is fastened onto an appliance. The burner head rests upon a boss on the burner base and has a tube that directs a flammable gas-air mixture from the burner base into a cavity created between the burner head and the burner cap. The burner cap rests upon the burner head and contains an outer edge that is turned downwards in order to allow fluid to drip away from the flame. A groove is cut into the burner cap just inside the down turned outer edge and provides a location for a support flame. The location of the groove prevents fluid and dust from collecting inside the groove. The groove captures the flammable gas-air mixture, which provides a constant ignition source for the gas-air mixture through slots in the burner cap when ignited.

This improved version of a multi piece gas burner assembly has simplified parts and has locating bosses moved to the outer edge of the gas burner assembly for simpler fixing of the components. Also, the burner cap now overlaps and rests on the burner head, which is simpler than using locating detents. Also, a multiplicity of larger and smaller holes drilled through an annular burner ring attached to the burner head improve the operation of the burner in extremely cold temperatures.

Claims

1. A burner assembly for outdoor cooking comprising:

a. a burner base, said burner having a base and an apex, said apex pointing downwards, said burner base additionally having an annular ring, said annular ring providing a raised edge to receive a burner head, said burner base further having an interior cavity defined therein, said apex having a first boss and a second boss, said first boss projecting downwards from said apex, said second boss being located within said cavity of said burner base and projecting upwards from said apex of said burner base, said first boss and said second boss being located coincident to each other, said first boss and said second boss each having a hollow portion defined therein, said hollow portion of said first boss and said hollow portion of said second boss being coincidentally located to allow a flammable gas to pass therethrough, a connector means is attached to said first boss, and a jet means is attached to said second boss;

b. said burner base having a multiplicity of slots, said slots providing passage for drawing primary air into said interior cavity of said burner base, said slots being below an upper edge of said jet means, said burner base having a horizontal land, said bottom surface of said horizontal land having a multiplicity of feet circumferentially defined thereon, said multiplicity of feet having holes defined therein for mounting said burner base onto a chassis of a cooking appliance, said horizontal land having an upper surface, said upper surface having a plurality of locating bosses defined thereon;

c. a burner head, said burner head having a first cylindrically raised portion and a second cylindrically raised portion, said second cylindrically raised portion being smaller in diameter than said first cylindrically raised portion, said second cylindrically raised portion being positioned on top of said first cylindrically raised portion, said first cylindrically raised portion having a bottom surface, said bottom surface of said first cylindrically raised portion resting on said annular ring of said burner base, said first cylindrically raised portion of said burner head defining a ledge to receive an annular burner ring defined on a burner cap;

d. said burner cap and first cylindrically raised portion of said burner head defining a mixing cavity therebetween, said top surface of said burner head additionally being smooth and having no depressions in which water or dirt could collect, a bottom surface of said second cylindrically raised portion of said burner head has an annular boss extending downwards, said annular boss being positioned above said jet means, said annular boss further having a hole defined therein, said hole of said annular boss extending upward and penetrating through said second cylindrically raised portion of said burner head, said burner head further having an outer edge at a base of said burner head, said flange having a plurality of slots complementary to said plurality of locating bosses on said burner base to correctly position said burner head on said burner base; and

e. said burner cap having an outer edge, said outer edge having a flange projecting downwards from said outer edge of said burner cap defining a downturned lip, said burner cap having an annular ring, said annular ring projecting downward from a bottom surface of said burner cap, said annular ring having a flame means defined therein, said flame means being ignited by an ignition means, said downturned lip of said burner head has an annular groove defined therein, said annular groove collecting a flammable gas-air mixture, said annular groove being above said flame means in said burner ring, said flammable gas-air mixture being captured in said annular groove and providing gas for a supporting flame when ignited in said annular groove under said ledge of said annular burner cap, said annular burner ring having locating means, said supporting flame providing continuous ignition of said flame means, said downturned lip additionally allowing dirt and fluid to drip away from said supporting flame preventing said supporting flame from being extinguished.

2. A burner assembly according to claim 1 wherein said burner head, and said burner cap are separate components, said burner head loosely fitting onto said burner base, said burner cap fitting loosely onto said burner head.

3. A burner assembly according to claim 1 wherein said flame means consists of;

a. said outer surface of said annular burner ring having a multiplicity of large holes circumferentially arranged around an outer surface, said outer surface of said annular burner ring also containing a multiplicity of small holes positioned below said multiplicity of large holes, said outer surface of said annular burner ring also having a multiplicity of pairs of secondary main holes situated between said large holes, said multiplicity of large holes, said multiplicity of small holes and said multiplicity of pairs of secondary main holes communicating with said mixing cavity defined between said burner head and said burner cap, allowing a gas-air mixture passing from said gap between said burner head and said burner cap to create a main flame, when ignited.

4. A burner assembly according to claim 1 wherein said locating means for said burner cap consists of a multiplicity of locating slots circumferentially arranged on a lower surface of said annular burner ring, said locating slots being complementary to said multiplicity of locating bosses positioned on said burner base, so that when said burner cap is placed on said burner head, said burner cap is correctly positioned.

5. A burner assembly according to claim 1 wherein said ignition means consists of an ignitor.

6. A burner assembly according to claim 1 wherein said burner base has a conical shape.