Infrared gas grill

• US 4,321,857 A
• Filed: 04/08/1980
• Issued: 03/30/1982
• Est. Priority Date: 04/08/1980
• Status: Expired due to Term

• Current Assignee: Willie H. Best
• Original Assignee: Willie H. Best
• Inventors: Best, Willie H.
• Primary Examiner(s): Wilhite, Billy J.
• Application Number:
  US06/138,854
• Time in Patent Office: 721 Days
• Field of Search: 99/339, 99/340, 99/446, 99/445, 99/467, 99/421 H, 126/25 R, 126/41 R, 126/39 C
• US Class Current: 99/340
• CPC Class Codes: A47J 37/06 Roasters; Grills; Sandwich grills
• CPC Class Codes: F23D 14/145 combustion being stabilised at a screen or a perforated plate
• CPC Class Codes: F23D 2203/102 using perforated plates
• CPC Class Codes: F23D 2212/103 Fibres

Abstract

A sheet metal cabinet supports a gas burner assembly below the forward portion of a shield, over which are a pair of removable primary cooking gridirons, having spaced, parallel, transversely extending U-shaped grids which cover the upper opening of the grill cabinet, the U-shaped grids having holes in their end portions so that the grease may drip onto a drip pan or grease tray which extends rearwardly of the burner assembly. A secondary gridiron or bake rack, is supported by a tubular upright rectangular hood assembly above the drip pan and over the rear portion of the primary gridirons. The hood has a front L-shaped access door hinged at the top of the hood by a transverse hinge. The burner assembly has tandem arranged burners with upwardly open, plenum boxes, the top portions of which are covered by a plurality of ceramic, juxtaposed, rectangular, foraminous, radiant burner elements. LP gas, from a tank carried within the cabinet, is fed through control valves which respectively control gas fed to the plenum chambers of the plenum boxes.

Auxiliary equipment includes a rotisserie which is removably carried by the hood, a smoke box within which moist wood chips are placed, the box being placed on the burner assembly for heating. One of the primary gridiron is selectively replaced by a deep fat frier which is suspended by the cabinet over one of the burners. The gridirons are also replaceable by a frying griddle.

Claims

1. A grill assembly comprising:

(a) a cabinet;

(b) a source of combustible gas;

(c) a gas burner assembly in said cabinet, said gas burner having a plenum box with a plenum chamber communicating with said source of combustible gas for receiving gas therefrom, said plenum box being supported by and disposed in the interior of said cabinet, said plenum box having an open upper portion open to said plenum chamber, a foraminous radiant burner element over said open upper portion, said radiant burner element being provided with plurality of gas passageways through which the combustible gas which enters said plenum chamber passes to the exterior upper surface of said burner element for burning at the upper surface of said burner element to generate heat and products of combustion;

(d) a fire shield carried by said cabinet, said fire shield defining a channel above said element and through which the products of combustion pass from said element;

(e) a stationary food supporting means disposed above said element for supporting items of food in spaced relationship to said burner element for being cooked by the heat generated by the combustion of said combustible gas at said of said burner.

2. The grill assembly defined in claim 1 wherein said food supporting means includes a grate provided with a plurality of spaced, parallel trough defining grids, the troughs of which open upwardly.

3. The grill assembly defined in claim 2 wherein said grids are U-shaped members having flat bases disposed in a common plane and upstanding, spaced, parallel flanges extending from the edges of said bases, the upper edges of said flanges terminating in a common, horizontal plane parallel to the plane of said bases for supporting said item of food, the space between said grate and said surface of said burner being essentially unobstructed, whereby the radiant heat from said burner heats portions of said item which are supported by said grids and wherein portions of fluids emanating from said item will be received by the bases of said grids and other fluids therefrom will fall by gravity onto said radiant burner element.

4. The grill assembly defined in claim 3 wherein each of said grids is provided with a hole in an end portion thereof through which liquids received in the troughs will be discharged, said holes being offset vertrically from the position of said burner element so that the fluids which pass through said holes do not drop onto said burner element.

5. The grill assembly defined in claim 3 wherein said grate is removably supported by said cabinet and said grate is selectively positionable in an upright position or in a position inverted therefrom.

6. The grill assembly defined in claim 1 wherein said food supporting means includes a deep fat fryer having walls and a bottom defining a liquid containing chamber and means for supporting said deep fat fryer within the confines of said fire shield.

7. The grill assembly defined in claim 1 wherein said food supporting means includes a rotisserie having a spit and a motor for rotating said spit, a hood carried by said cabinet, said hood having an interior above and communicating with the fire well of said fire shield, said motor being mounted on said hood and said hood journalling a portion of said spit, remote from said motor, for rotation over the fire well of said fire shield.

8. The grill assembly defined in claim 1 including a hood assembly disposed over said meat supporting member, said hood assembly having an access door hingedly mounted thereon, said access door and said access hood assembly defining a chamber aligned with and above the fire well of said fire shield.

9. The grill assembly defined in claim 1 including a smoker carried above said surface burner element, said smoker including a wood chip receiving chamber within which wood is deposited and being provided with holes through which the fumes from said wood pass for imparting a flavor to the item of food carried by said food supporting means.

10. A grill assembly comprising a cabinet, a source of combustible gas, a gas burner assembly disposed in said cabinet, said gas burner assembly having a plenum box defining a plenum chamber communicating with said source of gas for receiving gas therefrom, said plenum box being supported by said cabinet in the interior of said cabinet, and a foraminous infrared, ceramic, radiant burner disposed on said plenum box and having a plurality of holes communicating with said plenum chamber and through which said combustible gas passes for burning adjacent to the surface of said burner, said surface of said burner being disposed essentially in a horizontal position;

and a grate disposed above said surface for receiving food to be cooked by the heat generated by said burner, said grate being vertically above said burner, said grate having spaced, grids through which liquid from said food may drop onto said burner and be vaporized by the heat of the burning gas and a assembly over said grate for temporarily closing the area above said grate so as to restrict the passage of the products of combustion out of the grill.

11. The grill assembly defined in claim 10 wherein said cabinet is a sheet metal member having side walls and a front wall and a back wall, a top plate disposed over the upper edge portions of said walls, said top plate having an open central portion above said burner element and wherein said food supporting means is a grate disposed in said open central portion.

12. The grill assembly defined in claim 10 wherein said grate extends over a larger area than the area of said burner element, said grate having a plurality of parallel trough members which receive the liquid dropped from the item of food being cooked therein and wherein each of said trough grids is provided with a hole through which the liquid passes, the hole being vertically spaced from said burner so that the liquids which pass through the holes will drop clear of said burner.

13. The grill assembly defined in claim 10 including a drip pan removably carried by said cabinet and positioned below the holes in said grids for receiving the liquid dripping from said holes.

14. The grill assembly defined in claim 13 wherein said drip pan is slideably carried by said cabinet and extends beneath said burner, said drip pan being removable from said cabinet.

15. The grill assembly defined in claim 10 wherein said source of combustible gas includes an LP gas tank carried within said cabinet and wherein said cabinet includes a hinged door for providing access to the interior of said cabinet.

16. The grill assembly defined in claim 10 wherein said hood assembly includes an access door hingedly connected thereto.

17. The grill assembly defined in claim 10 wherein said hood assembly has a hood member formed of sheet metal and includes a vertically disposed back panel, a pair of side panels connected to said back panel and wherein said cabinet includes a rectangular top plate having a rectangular opening which receives said grate, said hood member being of substantially the same dimensions as said rectangular opening and being disposed thereover, said hood member also including a top extending between the upper edges of said side panels and the upper edge of said back panel, a door hingedly mounted on the front edge portion of said top, said door also being formed of sheet metal and including a top hingedly connected to the top of said hood member, side panels and a front panel.

18. A grill assembly comprising:

(a) an upright support;

(b) a source of gas;

(c) a gas burner carried by said support and connected to said source of gas;

(d) said gas burner having a generally horizontally disposed foraminous burner element along its upper surface and through which gas passes for burning along the upper surface of said element;

(e) a gridiron carried by said support parallel to and directly above said burner, the space between said gridiron and said burner being essentially unobstructed, whereby the convection heat and the conduction heat from the burning of gas by said element is directed onto said gridiron, said gridiron having spaced grids provided with upwardly opening troughs and on which meat to be cooked is placed, said grids being disposed in positions vertically above said element so that drippings from said meat, which pass between said grids toward said element, are vaporized by the heat generated by said gas at the surface of said burner element, said troughs being sufficient to receive and retain portions of the drippings from said meat, said grids being sufficiently close to said burner that the drippings received by said troughs are vaporized immediately below said meat for imparting a flavoring to said meat.

19. The grill assembly defined in claim 18 wherein said support is an upright tubular cabinet surrounding said burner, said gridiron being carried by the upper end portion of said cabinet.

20. The grill assembly defined in claim 19 wherein said cabinet is a sheet metal rectangular member defining an upright rectangular back wall, a pair of opposed parallel side walls connected to the edges of said back wall, and a front panel joining the front edges of said side wall.

21. The grill assembly defined in claim 20 including opposed doors below said front panel and hingedly connected to said side walls.

22. The grill defined in claim 18 wherein said support is an upright sheet metal tubular member, and a sheet metal top plate having an opening inwardly of its edges, said top plate being removably carried by said member, said gridiron being removably carried in said opening of said top plate.

23. The grill defined in claim 22 including a sheet metal tubular hood over gridiron, and a top for said hood.

24. The grill defined in claim 23, wherein said hood is divided into a hood member and an acess door, said top of said hood being flat and generally horizontally disposed, a portion of said top being included with said hood member and a portion of said top being included with said access door, and a hinge for hingedly joining said portions of said top for permitting opening and closing of said access door.

25. The grill defined in claim 24 wherein said hood is a rectangular member and is removably received upon said top of said cabinet, said access door and said hood member having side panels which form the sides of said rectangular member, the panels of said access door and said hood member overlapping when said door is closed.

26. The grill assembly defined in claim 18 wherein said support is a tubular cabinet and including a tubular shield within and spaced from said tubular cabinet, said tubular shield being carried by said cabinet and protruding downwardly from the edge portions of said gridiron.

27. The grill assembly defined in claim 18 including a pair of opposed parallel brackets connected to said support and supporting said burner.

28. A grill assembly comprising:

(a) a hollow upright tubular member;

(b) bracket means within said tubular member for forming a burner assembly support;

(c) a burner assembly carried by said bracket means, said burner assembly having an upwardly facing burner element spaced from said tubular member;

(d) a top plate extending across the upper end of said tubular member, said top plate having an opening therein inwardly of the edges of said top plate;

(e) gridiron supported by and over the opening of said top plate and spaced from and over said burner element for supporting meat to be cooked by said burner element, the space between said burner element and said gridiron being essentially unobstructed; and

(f) means for supplying gas to said burner assembly.

29. The grill assembly defined in claim 28 wherein said burner assembly is provided with a plenum chamber and said burner element is an infrared radiant burner element, the surface of which is heated to incandescence when the burner element is lighted and burning.

30. The grill assembly defined in claim 29 wherein said means for supplying gas to said burner assembly includes a valve connected to a source of gas under pressure, a nozzle connected to said valve and projecting sidewise and parallel to said bracket means, said burner assembly having a pipe for introducing gas into said plenum chamber, said burner assembly also including means for receiving the end portion of said nozzle, said burner assembly being slidably received by said bracket and being movable toward said nozzle for positioning to receive the gas from said nozzle.

31. The grill assembly defined in claim 28 wherein said top plate is a sheet metal top having downwardly turned flanges overlapping the end portion of said tubular member, said top plate having inner flanges along the edge portions defining the opening in said top plate, said flanges providing support for said gridiron.

32. The grill assembly defined in claim 28 wherein said gridiron includes a pair of gridiron members each having spaced, parallel grids which protrude beyond its vertical position over said burner assembly, and including a drip pan positioned vertically to one side of said burner assembly, said gridiron members having means for directing grease from meat deposited on said gridiron to a position over said drip pan for dripping thereon.

33. The grill assembly defined in claim 28 including a tubular hood smaller than said tubular member and sufficiently large to cover said opening in said top plate, said hood being removably carried by said top plate, and a hinged access door for said tubular member.

34. The grill assembly defined in claim 33 wherein said hood includes a flat top divided so that a portion of said top is carried with said access door and a hinge along the divided portion of said top, said hinge permitting the divided protions of said top to lie coplaner when said door is closed and permitting the portion of said top which is with said access door to pivot to a position resting upon and generally parallel to said top when said door is opened.

35. The grill assembly defined in claim 28 wherein said tubular member is a sheet metal rectangular member defining an upright rectangular back wall, a pair of opposed parallel side walls connected to the edges of said back wall, and a front panel joining the front edges of said side wall.

36. The grill assembly defined in claim 35 including opposed doors below said front panel and hingedly connected to said side walls.

37. The grill assembly defined in claim 28 wherein said tubular member is an upright sheet metal member, and said top plate is a sheet metal plate having an opening inwardly of its edges and removably carried by said member, said gridiron being removably carried in said opening of said top plate.

38. The grill defined in claim 37 including a sheet metal tubular hood over said gridiron, and a top for said hood.

39. The gridle defined in claim 38, wherein said hood is divided into a hood member and an access door, said top of said hood being a flat and generally horizontally disposed sheet separated to provide a vent portion connected to said hood member and a front portion connected to said access door, and a hinge for hingedly joining said portions of said top for permitting opening and closing of said access door.

40. The grill defined in claim 39 wherein said hood is a rectangular member and is removably received upon said top of said tubular member, said access door and said hood member having side panels which form the sides of said rectangular member, the panels of said access door and said hood member overlapping when said door is closed.

41. The grill assembly defined in claim 39 including a second and smaller tubular member within and spaced from said tubular cabinet, said second tubular member being carried by said top plate and protruding downwardly from the edge portions of said gridiron.