Pellet-fired BBQ
A pellet-fired cooking apparatus is provided. The cooking apparatus may include an outer shell into which are mounted at least a fuel support member and a food support member. Pellet fuel may be placed on the fuel support member and may be used to cook food placed on the food support member. The fuel support member may have a construction that allows for controlled combustion of the pellet fuel, providing for desired cooking characteristics of the pellet fuel. Intake air for combustion may be provided to the pellet fuel through one or more hollow supports for the cooking apparatus.
No provisional patent application was filed for the subject matter of this disclosure.
BACKGROUND OF THE DISCLOSUREBarbecue grills or stoves are a popular way to prepare food away from the kitchen of a home. Typically, barbecue grills or stoves include a relatively open food support over a heat source, such as a collection of charcoal briquettes. The open food support, or grill, is commonly constructed of a number of horizontally disposed, parallel elements connected to a frame. In cases where charcoal briquettes are used as the heat source, those briquettes, too, may be supported on an open grill. Alternatively, the briquettes may rest upon a bottom surface of a shell making up the body of the barbecue grill or stove.
The barbecue grill described above may be sufficient for cooking food over a collection of charcoal briquettes. However, the described barbecue grill may not be adequate for producing heat at a high level in a short period of time, or for utilizing a pellet fuel source. As another potential drawback, charcoal briquettes used in a conventional barbecue grill in the described manner may stay hot for several hours after their intended usage period, making clean-up a difficult proposition.
A barbecue grill as described in the present disclosure overcomes the flaws inherent in the prior art by providing a barbecue grill suitable for using a pellet fuel for cooking foodstuffs in an efficient manner. Such a pellet-fueled barbecue grill may provide sufficient heat for cooking in a very short period of time, and may allow the pellet fuel to cool in a much shorter time than occurs in a conventional barbecue grill.
SUMMARY OF THE DISCLOSUREThe present disclosure provides a pellet-fired barbecue for cooking food using heat produced by combustion of a pellet fuel. The pellet-fired barbecue may include a standard, narrow-gauge wire food support and a fuel support, both encompassed within the barbecue grill body. The fuel support may be a substantially solid structure, having a minimum of open space; such a configuration may provide for a controlled burn of a pellet fuel used as a heat source for cooking food in the barbecue. A variety of configurations of the fuel support may be used for a variety of different pellet fuels. Air used in the combustion of a pellet fuel in the barbecue grill may enter the grill through one or more supports of the barbecue.
BRIEF DESCRIPTION OF THE DRAWINGS
As shown in
As noted above, a number of shell portions 21, 22 may be held in fixed relation to each other by at least one latch assembly 30. In an illustrated embodiment, there may be three latch assemblies 30 spaced equidistant about a periphery of the barbecue grill body 20. Each latch assembly 30 may include an external latch portion 31 and an internal latch portion 32. Each latch assembly 30 may be fixed at least temporarily to a shell portion through welding, or adhesion, or screwing, or any other appropriate fastening technique. In the illustrated embodiment, latch assembly 30 may be held to a shell portion 22 through a plurality of rivets that span from an exterior surface 24 to an interior surface 25 of the shell portion. In a case where the grill body 20 is composed of an upper shell portion 21 and a lower shell portion 22, a given latch assembly 30 may hold the upper and lower shell portions in fixed relation by removably hooking a portion of the latch assembly of the lower shell portion over a shell lip 26 included on the upper shell portion. Alternatively, or in addition, upper and lower shell portions 21, 22 may be held fixedly through a design feature included in the shell portions, such as a tongue-and-groove arrangement.
As noted above, an interior 29 of grill body 20 may house a food support member 40. The food support member may have an upper surface 41 and a lower surface 42. To support food over a heat source, food support member may include a number of grill elements 44 separated by spaces 43. In a typical embodiment, spaces 43 may be much larger than grill elements 44, providing a substantially open structure upon which to support food items. In this way, there may be a minimal amount of heat-deflecting material between a food item 300 placed upon the food support member and a pellet fuel source 100 providing cooking heat from below. In a typical embodiment, the food support member may be made of a steel material, where the grill elements 44 are configured as narrow-gauge steel rods, or tines. Of course, any one of many possible structures may be used as a food support. Food support member 40 may rest against an interior surface of the grill body, or it may be supported by internal portions 32 of latch assemblies 30, as shown.
Food on food support member 40 may be cooked over heat supplied by pellet fuel 100. Pellet fuel 100 may be supported in an interior space 29 of grill body 20 by a fuel support member 50. Fuel support member 50 may have a fuel support body 51 having openings 52 (shown most clearly in
Fuel support 50 may be supported in an interior space 29 of the grill body 20 by resting upon an inner lip 57 of a fuel platform 56. Fuel platform 56, in turn, may be fastened to an interior surface 25 of one of the shell portions 21, 22 of the grill body 20. Fuel platform 56 may rest against an inner surface of the grill body, or it may be fastened temporarily or permanently to an inner surface of the grill body. For example, fuel platform may be welded to an inner surface of the grill body. Any appropriate fastening technique may be used which allows the combined fuel platform 56 and fuel support 50 to support the pellet fuel.
As noted, fuel support 50 may rest upon a fuel platform lip 57, which may be a sub-region of the fuel platform. The fuel platform lip 57 may be separated from the rest of the fuel platform by a fuel holding ring 55. Fuel holding ring 55 may function to contain a mass of pellet fuel 100 as it sits on a fuel support 50. For example, if fuel support 50 is placed into the grill prior to the addition of the pellet fuel, fuel holding ring 55 may prevent the pellet fuel from spreading about the entirety of the fuel platform 56 when the pellet fuel is placed into the grill.
Fuel support 50 may be placed separately into a barbecue grill, or it may be included as a portion of a larger assembly. As shown in
As noted earlier, a barbecue grill body 20 may be supported by at least one grill support 60. In an illustrated embodiment, the grill support 60 may be merely the lowest portion of the barbecue grill body 20 whose only specialized supporting structure is a flaring at the lowest portion of the grill body. The grill support 60 may be configured to have a hollow or tubular construction. With a grill support having a hollow construction, it may be the case that an interior portion 29 of grill body 20 may be in fluid communication with an outside atmosphere 19 through one or more air inlets 61 formed in the grill support. Such a hollow configuration of a grill support 60, including one or more associated air inlets 61, may function to provide extra air from the outside atmosphere to the interior of the grill body 20, facilitating combustion of pellet fuel 100.
In providing for relatively free air movement through air inlets 61, grill support 60 may likewise allow pellet fuel ash or sparks to likewise pass through the air inlets. To retard the flow of ash or sparks through air inlets 61, heat shield 80 may be placed in the interior of the grill body, as shown, such that it may catch any fallen ash from pellet fuel 100. In addition, judicious placement of heat shield 80 may prevent sparks or heated air from exiting the one or more air inlets 61. A such, heat shield 80 may also be referred to as a deflective member, in that it may deflect objects that may be on a path to exit from the interior 29 of the grill to the exterior 19 of the grill via any of the air inlets 61.
Pellet fuel 100 may rest upon fuel support member 50 during combustion of the pellet fuel. Openings 52 (see
As noted, pellet fuel 100 may be combusted using air that may be provided from an external environment 19 of the grill body. Where grill support 60 is configured with a substantially hollow construction, air may pass from outside to inside the barbecue through the one or more air inlets 61. However, such a configuration of grill support 60 may carry the risk that pellet ash 200, or a spark from pellet fuel 100, may escape through one or more of the air inlets to the outside of the barbecue. Escape of ash from an interior to an exterior of the barbecue may result in a mess that must be cleaned up after use of the barbecue. In addition, escape of ash or sparks from the interior space of the barbecue may carry the risk of a fire, if there are any combustible materials nearby, or it may carry the risk of personal injury, if someone is present near the barbecue and is contacted by the spark or ash. To prevent the escape of at least ash and sparks from the interior of the barbecue, the grill may be configured with a heat shield 80 present in a lower portion of the grill body 20. Although shown in
When used in a grill shown in the illustrated embodiments, a pellet fuel used with the disclosed fuel support member may reach optimal cooking temperature after approximately 10 minutes of combustion; it may be substantially completely combusted in approximately 60 minutes. In contrast, it may be that configuring the fuel support structure 50 with a more open, grill-like structure, as shown for one embodiment of a food support member 40, may be problematic for using pellet fuel as a heat source for cooking. As one possible difficulty, it may be that a substantially open fuel support member could allow the pellet fuel to combust too quickly, and at too high a temperature, for use as a cooking fuel. As another possible difficulty, it may be that a more open fuel support member could allow a partially-combusted fuel pellet to fall through the fuel support member and come to rest on a bottom interior surface of the second, lower shell portion or on an associated heat shield; each partially-combusted fuel pellet portion may thus become ruined for future use and the remaining combined pellet fuel may not provide sufficient heat for cooking any provided food.
As shown in
As noted earlier, a barbecue grill body 120 may be supported by at least one grill support 160. In the second illustrated embodiment, the barbecue grill body is supported by three legs 160 attached to an eternal surface 124 of lower shell portion 122. Legs 160 may be spaced such that they are attached away from the lowest point of the lower shell portion 122, and they may be spaced equidistant about the periphery of the lower shell portion at the level they are attached (seen more clearly in
It may be that not every leg used to support grill body 120 is configured with a hollow or tubular construction. With a leg having a hollow construction, such that an air inlet 161 of the grill and a distal end 162 of the leg are operatively connected by open space, it may be the case that an interior portion 129 of grill body 120 may be in fluid communication with an outside atmosphere 119 through the open space of the hollow leg. Such a hollow configuration of each leg may function to provide for air movement from the outside atmosphere to the interior of the grill body 120, facilitating combustion of pellet fuel 100.
To provide for free air flow through a hollow leg grill support 160, each such leg may be provided with a leg foot 170 and/or a heat shield 180. A leg foot 170 may be located at a distal portion 162 of a leg grill support 160 relative to a grill body 120. A leg foot 170 may function to distribute the weight of the barbecue grill over a greater surface area of the ground, which may in turn prevent each leg grill support 160 from digging into the ground with a resulting possibility of obstruction of free air flow through the leg. Leg foot 170 may also work in a more general manner in preventing foreign objects from obstructing a distal end 162 of the leg. Much as a leg foot 170 may protect a distal end 162 of a leg 160, heat shield 180 may function to protect an air inlet 161 at the junction of the grill body 120 and each leg 160 from the entry of foreign objects. Each heat shield 180 may be mounted to an internal surface 125 of one portion of the grill body, such that the heat shield maintains fixed placement near an air inlet 161 from a leg 160 with which it is associated.
As noted earlier, pellet fuel 100 may be combusted using air that may be provided from an external environment 119 of the grill body. In an embodiment of the grill 100 where one or more legs 160 have a tubular structure, air may pass from outside 119 to inside 129 the grill through the one or more hollow legs. However, such a configuration of legs 160 may carry the risk that pellet ash 200, or a spark from pellet fuel 100, may escape through one or more of the legs to the outside of the barbecue. Escape of ash from an interior 129 to an exterior 119 of the barbecue may result in a mess that must be cleaned up after use of the barbecue. In addition, escape of ash or sparks from the interior space of the barbecue may carry the risk of a fire, if there are any combustible materials nearby, or it may carry the risk of personal injury, if someone is present near the barbecue and is contacted by the spark or ash. To prevent the escape of at least ash and sparks from the interior 129 of the barbecue, an interior surface 125 of a shell portion may be configured with one or more heat shields 180 present near an air inlet 161 of each tubular leg 160 where it meets shell portion 122. In the second illustrated embodiment, legs 160 may be attached along a lower surface of a second, lower, shell portion of the barbecue and a heat shield 180 may be positioned just above each air inlet 161. Although shown in
Although the present invention has been shown and described with reference to the foregoing operational principles and preferred embodiments, it will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention. The present invention is intended to embrace all such alternatives, modifications and variances that fall within the scope of the appended claims.
It is believed that the disclosure set forth above encompasses multiple distinct inventions with independent utility. While each of these inventions has been disclosed in its preferred form, the specific embodiments thereof as disclosed and illustrated herein are not to be considered in a limiting sense as numerous variations are possible. The subject matter of the inventions includes all novel and non-obvious combinations and subcombinations of the various elements, features, functions and/or properties disclosed herein. Similarly, where the claims recite “a” or “a first” element or the equivalent thereof, such claims should be understood to include incorporation of one or more such elements, neither requiring nor excluding two or more such elements.
Claims
1. A cooking apparatus comprising:
- a housing, the housing comprising: a shell defining an interior and an exterior, wherein the shell includes an upper portion and a lower portion, and further wherein at least the lower portion has a substantially imperforate surface construction; a food support member; and a pellet fuel support member, wherein the food support member and the pellet fuel support member are disposed above a lower surface of the housing; and
- at least one housing support, wherein the at least one housing support includes at least one air inlet to the interior of the shell.
2. The cooking apparatus of claim 1, further including a deflective member positioned relative to the air inlet to at least substantially obstruct access to the air inlet from the interior of the housing.
3. The cooking apparatus of claim 2, wherein the at least one housing support is an extension of the lower portion of the shell, and wherein each air inlet is configured as an opening in the lower portion of the shell.
4. The cooking apparatus of claim 1, wherein the at least one grill support is configured as at least one hollow leg mounted to the lower portion of the shell such that an interior space of the hollow leg is functionally continuous with the interior of the housing via the air inlet and with an outside environment via an opening in the at least one leg.
5. The cooking apparatus of claim 4, wherein the interior of the shell includes a deflective member positioned relative to the air inlet to at least substantially obstruct access to the air inlet from the interior of the housing.
6. The cooking apparatus of claim 5, wherein the opening in the at least one hollow leg is positioned at an end of the hollow leg distal from the shell.
7. The cooking apparatus of claim 6, wherein the at least one hollow leg includes a removable covering obstructing at least a portion of the opening in the hollow leg.
8. The cooking apparatus of claim 1, wherein the portions of the shell together describe a substantially semi-spherical shape.
9. The cooking apparatus of claim 8, wherein the at least one grill support is configured as at least one hollow leg, and further wherein the at least one leg is mounted to the lower portion of the shell such that an interior space of the hollow leg is functionally continuous with the interior of the housing via the air inlet and with an outside environment via an opening in the at least one leg.
10. The cooking apparatus of claim 9, wherein the interior of the shell includes a deflective member positioned relative to the air inlet to at least substantially obstruct access to the air inlet from the interior of the housing.
11. The cooking apparatus of claim 10, wherein the opening in the at least one hollow leg is positioned at an end of the hollow leg distal from the shell.
12. The cooking apparatus of claim 11, wherein the at least one hollow leg includes a removable covering obstructing at least a portion of the opening in the hollow leg.
13. A cooking apparatus comprising:
- a housing, the housing comprising: means for supporting food in an interior space of the housing; and means for supporting pellet fuel in the interior space of the housing, wherein the means for supporting food and the means for supporting pellet fuel are displaced vertically from a lower surface of the housing; and
- means for supporting the housing above a surface, wherein at least a portion of the means for supporting the housing provides an air inlet for the interior of the housing.
14. The cooking apparatus of claim 13, further including a means for deflecting wherein the means for deflecting is positioned relative to the air inlet to at least substantially obstruct access to the air inlet from the interior of the housing.
15. A cooking apparatus comprising:
- a housing, the housing comprising: a shell defining an interior and an exterior, wherein the shell includes an upper portion and a lower portion each having a substantially imperforate construction and capable of being held in relatively fixed placement by a plurality of fastening devices; a food support at least temporarily mounted in the interior of the shell, wherein the food support has a substantially open and planar configuration defined by a plurality of crosspieces mounted to a frame; a fuel support at least temporarily mounted in the interior of the shell, wherein the fuel support has a substantially planar configuration defined by a substantially imperforate support material; and a deflective member at least temporarily mounted in the interior of the shell, wherein the deflective member has a substantially planar configuration defined by an at least substantially imperforate deflective material, and further wherein the deflective member and the fuel support are mounted on a connection rod in a connection rod assembly such that the deflective member is disposed vertically below the fuel support on the connection rod; and
- at least one housing support, wherein at least one housing support is configured with an air inlet sized suitably to allow fluid communication of air between the interior and the exterior of the shell to such an extent that combustion of a pellet fuel supported on the fuel support can occur.
Type: Application
Filed: Dec 16, 2005
Publication Date: Jun 21, 2007
Inventors: Joseph Traeger (Mt. Angel, OR), Mark Traeger (Mt. Angel, OR), Randolph Traeger (Mt. Angel, OR), Brian Traeger (Mt. Angel, OR)
Application Number: 11/303,403
International Classification: F24B 3/00 (20060101);