Fuel ignition systems and apparatuses for use in a cooking apparatus
Patent Information
- Application Number
- CA3320606
- Authority / Receiving Office
- CA · CA
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-07-09
AI Technical Summary
Existing methods for igniting combustible fuels like wood or charcoal in grills or smokers are inefficient, time-consuming, and pose significant safety risks due to direct user interaction and uneven combustion, with potential for burn injuries and device damage.
An electric igniter coil integrated with a firebox grate, using a heat-conductive material to distribute heat evenly and protect electrical connections from overheating, allowing automatic ignition without direct user contact.
The solution provides safe, efficient, and even fuel ignition with reduced risk of user injury and device damage, ensuring consistent heating and protecting electrical components from ash and debris.
Abstract
Description
FUEL IGNITION SYSTEMS AND APPARATUSES FOR USE IN A COOKING APPARATUSTECHNICAL FIELD
[0001] The present disclosure relates generally to systems and apparatuses for igniting fuel in a cooking apparatus and, more particularly, to improved fuel ignition systems and apparatuses that provide safe and easy ignition of fuel.BACKGROUND
[0002] Many grilling or smoking apparatuses use combustible fuel, such as wood or charcoal, that, when ignited, acts as a heat source for cooking and / or smoking food. While combustible fuels like wood or charcoal are popular because they impart a particular flavor to food, they are not as user friendly as other heat sources, such as gas or electric burners. For instance, efficiently and safely igniting wood or charcoal in a grill or smoker requires a higher level of skill, which may dissuade users from cooking with such solid fuels.
[0003] In order to facilitate lighting wood and charcoal, users traditionally may use a highly combustible substance, such as solid fire starters or lighter fluid. Solid fire starters are generally effective in lighting the wood or charcoal; however, they can be slow to light, cause uneven combustion, and may require a user to use multiple fire starters per cook, making them a less cost-effective option. Lighter fluid can be particularly hazardous to use for igniting solid fuel because the liquid is quick to ignite and therefore creates a high risk for burn injuries, especially if too much is used. Additionally, due to the volatile hydrocarbon solvents present in lighter fluids, these additives can negatively impact the flavor of the food being cooked or smoked.
[0004] To address these concerns with solid fire starters and lighter fluids, certain devices exist that can assist with fuel lighting. One example is a charcoal starter device that uses a metal “chimney” with a grate dividing the chimney into a top chamber and a bottom chamber. The bottom chamber is filled with a highly combustible material, such as paper, and the top chamber is filled with charcoal. The highly combustible material in the bottom chamber is lit and it subsequently ignites the charcoal in the top chamber. Once the charcoal is ignited, the user inverts the chimney to pour the ignited charcoal into the firebox of the grill or smoker. While this method is effective, it is time consuming and puts the user at a higher risk of burn injuries as they are directly interacting with burning fuel. Furthermore, when the user inverts the chimney, the hot charcoal may cause hot ash, embers, and / or sparks to escape from the grill or smoker, which further increases the burn risk to the user.
[0005] Other methods of igniting fuel include handheld electric heating elements that utilize Joule heating. While these handheld devices can alleviate the time consumption and certain safety hazards of using the fuel ignition methods discussed previously, they also have their drawbacks. For instance, the handheld electric heating elements utilize an exposed heating element placed in direct contact with the charcoal or wood fuel source, where the exposed heating element is coupled to a nonconductive handle held by the user. The exposed portion of the heating element, when stuck into a single location of the wood or charcoal fuel source in a grill or smoker, may unevenly ignite the fuel or burn a hollowed “tunnel” through the mound of wood or charcoal fuel, which can result in uneven temperatures on the cooking surface of the grill. Furthermore, the handheld electric heating elements reach exceptionally high temperatures and may remain hot for some time after use. The user runs the risk of severely burning themselves due to accidental contact with the heating element. Furthermore, if the user leaves the heating element turned on in the wood or charcoal for an extended period after the wood or charcoal has been ignited, the heating element may become sufficiently overheated through its own heat generation and the additional heat received from the combusting fuel, rendering it inoperable.
[0006] Other embodiments of electric fuel igniters are handheld hot-air guns which utilize super-heated air to ignite the wood or charcoal fuel in a grill or smoker. These handheld devices quickly ignite the fuel, and due to their targeted application of super-heated air, igniting only the fuel they are directed at, they may better avoid uneven burning. However, they also have drawbacks. The devices push out air that may reach 1200℉ and therefore get exceptionally hot creating an increased risk of burn injury for the user operating the hot-air gun.
[0007] There is a need for an improved fuel igniter that can quickly and efficiently ignite fuel in a grill or smoker while also lowering the risk of injury to the user and prevent damage to the igniter itself during normal use. The disclosed embodiments provide these and other advantages.SUMMARY OF THE DISCLOSED EMBODIMENTS
[0008] The presently disclosed embodiments comprise fuel ignition systems and apparatuses for igniting fuel in a cooking apparatus. In the exemplary disclosed embodiments, the cooking apparatus may be a barbecue grill or smoker (hereinafter referred to, collectively, as a “grill” ) and, more particularly, may include kamado-style grills. The exemplary grills in the disclosed embodiments may comprise a firebox for holding and burning solid fuel, such as wood and / or charcoal, during a cooking or smoking process. In these exemplary embodiments, the firebox may comprise a firebox grate positioned in a bottom area of the firebox. When a user cooks food using the grill, the user may place fuel (e.g., charcoal, wood chunks, and / or wood chips) on the firebox grate and ignite the fuel. The firebox grate may comprise a plurality of openings for allowing ash and other debris to fall below the firebox and into an ash pan or other collection area.
[0009] Further to the disclosed embodiments, the exemplary fuel ignition systems and apparatuses may integrate an electric igniter coil (e.g., an electrically conductive coil that generates heat as a result of an electric current passing through it) with the firebox grate of the firebox. In some exemplary embodiments, the electric igniter coil may be mounted on or near a top surface of the firebox grate. In other embodiments, the electric igniter coil may be an integral part of the fire bowl and / or firebox grate. The electric igniter coil may comprise, for example, one or more loops that cover a portion of the firebox grate. In some exemplary embodiments, the igniter coil may comprise a single loop, for example substantially circular in shape, that circumscribes a perimeter portion of the firebox grate, thereby enabling the electric igniter coil to heat and ignite fuel located around the firebox grate. In other embodiments, the electric igniter coil may comprise a substantially square or rectangular loop or may comprise one or more embedded loops or spirals to cover a larger area of the firebox grate.
[0010] The firebox grate may be formed of a heat-conductive material, such as cast iron, steel, or another metal, that can distribute heat from the igniter coil and combusting fuel. As such, the heat-conductive firebox grate may prevent damage to the ignitor coil due to overheating and also spread heat within the firebox to provide more even heating within the grill.
[0011] In an exemplary disclosed embodiment, the electric igniter coil comprises an upper portion and a terminal portion. The upper portion comprises at least one physical turn in the igniter coil configured to generate heat for igniting fuel located in direct contact with or near the upper portion. The terminal portion of the igniter coil is connected to, or is an extension of, the upper portion, and is shaped and configured to receive electrical energy, e.g., from a controller in, or attached to, the grill, or from an external source. The terminal portion may comprise a region in which the terminal ends of the metal core are electrically connected to higher-gauged conductors that supply a current to the metal core or apply a voltage across the terminal ends of the metal core. In some embodiments, the higher-gauged conductors may be wires that are external to the igniter coil and hat electrically connect with conductors within the terminal portion of the igniter coil. In some embodiments, for example, the higher-gauged conductors may comprise insulated copper wires adapted to transfer electrical energy to the metal core of the igniter coil. In alternative embodiments, the terminal portion itself may comprise one or more higher-gauged conductors relative to the metal core in the upper portion of the igniter coil.
[0012] In the exemplary embodiment above, the upper portion of the electric igniter coil can comprise one or more circular loops to provide even distribution of heat to the fuel; however, it is understood that the upper portion may take many geometric or intricate shapes as desired as discussed previously. The terminal portion of the igniter coil may be configured to extend downwardly from the upper portion of the igniter coil to an area below the firebox grate and, in some embodiments, may further comprise at least one region, e.g., toward its distal end, that is upwardly curved. Further, in some exemplary embodiments, the terminal portion may comprise at least two prongs and the ends of each prong may be upwardly curved. An upward curvature of the one or more ends of the terminal portion can prevent water, steam, and debris from the firebox from interfering with external electrical connections to the terminal portion of the igniter coil. This exemplary configuration of the terminal portion of the igniter coil also prevents debris and ash from interfering with the electrical connections to the igniter coil.
[0013] In some disclosed embodiments, the electric igniter coil may comprise multiple layers. For example, the electric igniter coil may comprise an outer sheath (e.g., grade 310S stainless steel) having, within its interior, a metal conductor core (e.g., a nickel-chromium alloy or 80 / 20 nickel chromium wire) surrounded by a filler material (e.g., magnesium oxide) . In some embodiments, the cross-sectional areas of the metal core and the outer sheath may be circular, with the diameter of the outer sheath’s cross-sectional area being greater than the diameter of the metal core’s cross-sectional area. In some embodiments, the inner conductor provides a heating element comprised of a material with sufficiently high electrical resistance to allow for Joule heating (e.g., Ohmic heating) whereby an electrical current passing through the inner conductor generates enough heat to ignite a combustible fuel source in the grill. For example, the metal core generates heat when an electric current is passed through it. The generated heat from the metal core propagates through the filler material to the outer sheath which also may be electrically conductive so as to transfer and radiate the generated heat to the solid fuel on the firebox grate. In some embodiments, the filler material may be substantially electrically insulative to avoid an electrical short developing between the metal core and the outer sheath when a voltage is applied across the terminal ends of the metal core. For example, in some exemplary embodiments, the outer sheath may be electrically grounded or otherwise set to a reference voltage.
[0014] In an exemplary embodiment, the upper portion of the igniter coil can be placed within the firebox of the grill and secured to an upper surface of the firebox grate. This positioning allows for the igniter coil to heat the fuel within the firebox from the bottom. In some embodiments, the firebox grate can further comprise a physical channel for receiving the upper portion of the igniter coil and an opening for receiving the terminal portion of the igniter coil. The channel can generally be the same shape (i.e., substantially the same shape) as the upper portion of the igniter coil and, in some embodiments, may comprise a groove in which the upper portion fits. The channel may further comprise one or more openings for allowing heat dispersion from the igniter coil.
[0015] In some exemplary embodiments, the upper portion of the igniter coil can rest in the groove of the channel on the firebox grate and be affixed to the grate using one or more clips (e.g., U-clips) . Since the upper portion of the igniter coil may be positioned on the top surface of the firebox grate and held in place using the clips, the igniter coil may more effectively transfer heat to the firebox grate (and clips) to facilitate using the grate as a heat spreader to provide a more even distribution of heat to the fuel and prevent the igniter coil from overheating. The terminal portion of the igniter coil can extend downwardly through the opening in the firebox grate and one or more ends of the terminal portion of the igniter coil may be curved away from the firebox (e.g., towards an outer wall of the grill) , e.g., in some embodiments they may be curved upwardly in a direction towards the firebox grate. This curvature of the ends of the terminal portion can help protect the electrical connections of the igniter coil from contacting any hot ash and / or debris that may escape the firebox.
[0016] In some disclosed embodiments, the electric igniter coil may be integrated with a controller of a cooking apparatus in such a way to allow for automatic ignition of the combustible fuel. For example, the electrical connectors at the terminal portion of the igniter coil may be electrically coupled to a controller attached to, or otherwise in communication with, the cooking apparatus, such that the controller controls when electrical energy is delivered to the igniter coil for igniting fuel in the firebox. In some embodiments, the controller may comprise a user interface that allows a user to manually turn on the igniter coil to start fuel combustion. In some embodiments, the controller may be configured to automatically control when electrical energy is provided to and / or removed from the igniter coil. For instance, the controller may be configured to provide an electrical current or voltage to the igniter coil for only a certain duration of time, e.g., sufficient to ignite the fuel in the firebox, and then to remove the applied current or voltage. For example, in some embodiments, the controller may be programmed to step up the amount of electrical current or voltage supplied to the igniter coil for igniting fuel (e.g., in one or more discrete increments) and also may comprise a procedure for stepping down the applied current or voltage after the fuel has been ignited (e.g., in one or more discrete increments) . Those skilled in the art will appreciate that the controller can employ any control strategy for turning on and off the electric igniter coil for the purpose of igniting the fuel in the firebox.
[0017] Advantageously, the disclosed embodiments of the invention provide improved fuel ignition systems and apparatuses for igniting fuel in the firebox of a cooking apparatus. The systems and apparatuses herein may be used to automatically ignite a combustible fuel source without the need for direct user contact with the electric igniter coil or fuel, thus reducing the risk of the user injuring or burning themselves compared with previous fuel-ignition devices. The embodiments further advantageously provide an electric ignition system configured to disperse the heat generated by the ignited fuel away from the electric igniter coil to protect its electrical connections from overheating and to avoid contact with hot ash and debris, which in turn can lower the risk of damage to the electric igniter compared to prior fuel-ignition devices.BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The particular features and advantages of the invention will become apparent from the following description taken in connection with the accompanying drawings in which like reference numbers indicate identical or functionally similar elements. The following figures depict details of disclosed embodiments. The inventions is not limited to the precise arrangement shown in these figures, as the accompanying drawings are provided merely as examples.
[0019] FIG. 1A is a perspective view of an exemplary kamado-style grill illustrating line A-A’ through which the cross-section in FIG. 5 may be created, in accordance with certain embodiments of the present disclosure.
[0020] FIG. 1B is a lower portion of the kamado-style grill of FIG. 1A comprising a firebox and an igniter, in accordance with certain embodiments of the present disclosure.
[0021] FIG. 2A is a perspective view of an exemplary igniter coil illustrating line B-B’ through which the cross-section in FIG. 2B may be created, in accordance with certain embodiments of the present disclosure
[0022] FIG. 2B is a cross-sectional view of the igniter coil created by passing a vertical plane through line B-B’, in accordance with certain embodiments of the present disclosure.
[0023] FIG. 3 is a perspective view of a firebox grate, in accordance with certain embodiments of the present disclosure.
[0024] FIG. 4A is a perspective view of an igniter coil integrated with a firebox grate, in accordance with certain embodiments of the present disclosure.
[0025] FIG. 4B is an exploded view of the igniter coil and firebox grate of FIG. 4A, in accordance with certain embodiments of the present disclosure.
[0026] FIG. 4C is an alternative exploded view of the igniter coil and firebox grate of FIG. 4A, in accordance with certain embodiments of the present disclosure.
[0027] FIG. 5 is a cross-sectional view of the exemplary kamado-style grill of FIG. 1A created by passing a vertical plane through line A-A’ in FIG. 1A, in accordance with certain embodiments of the present disclosure.DETAILED DESCRIPTION OF THE DISCLOSED EMBODIMENTS
[0028] FIG. 1A illustrates an exemplary kamado-style grill 100 in which the improved igniters may be used, in accordance with certain embodiments of the present disclosure. In some exemplary embodiments, the kamado-style grill 100 may be generally constructed as shown and described in U.S. Patent Nos. 11,382,457 and 11,819,161, and U.S. Patent App. No. 18 / 216,674, each titled “Integrated Kamado-style Grill and Smoker, ” and each of which is hereby incorporated by reference in its entirety as if fully set forth herein. While the various embodiments of the presently disclosed fuel ignition systems and devices are discussed in terms of the exemplary kamado-style grill 100, it is understood that they may be implemented in various other types of grills and smokers, or even other cooking and non-cooking apparatuses, now known or later discovered where it is desired to light fuel.
[0029] The inventors have recognized that placing an electrical heating element directly in contact with, or in close proximity, to fuel inside of a firebox of a grill, such as in the kamado-style grill 100, the high temperatures from the combusting fuel may melt or deform the electrical connections (and their insulations) of the heating element causing them to contact each other and short out. The electrical connections of such an electrical heating element also may create an electrical short if they are located in a position where water or debris from the firebox can come into contact with them and cause an electrical short. Accordingly, the disclosed embodiments provide inventive fuel ignition systems and apparatuses that can be integrated with or otherwise affixed in a cooking apparatus to avoid such overheating and electrical problems.
[0030] In the exemplary disclosed embodiment of FIG. 1A, the kamado-style grill 100 comprises a top shell 110 (or lid) and a bottom shell 120 (or base) connected by a hinge 115. As shown in FIG. 1B, the bottom shell 120 houses a firebox 130 for containing fuel (e.g., charcoal, wood chunks, wood chips etc. ) while it is burned during cooking. A firebox grate 135 is positioned in a bottom portion of the firebox 130 for supporting the fuel, such as wood chunks, wood chips, or charcoal, within the firebox 130 and comprises a plurality of openings 136 for allowing ash and other debris to fall into an ash removal unit 160 (shown in greater detail in FIG. 5) . An exemplary igniter coil 150 is affixed to an upper surface of the firebox grate 135. Igniter coil 150 may be electrically coupled to a control unit 140 and, in some embodiments, may be automatically ignited after a user has manually pushed a button 145 on the control unit 140, or has input an ignition command using a user interface of the control unit 140 or an associated mobile application (not shown) in communication with the control unit, or has otherwise caused the control unit 140 to provide an electrical current or voltage to deliver electrical energy to the electric igniter coil 150. The control unit 140 may be configured to supply the electrical energy to turn on and / or off the igniter coil 150 in accordance with any control strategy.
[0031] FIG. 2A illustrates the exemplary igniter coil 150 that may be used to ignite fuel within firebox 130. In this example, the igniter coil 150 comprises a coil composed of an electrically conductive material with a sufficient resistivity that, when provided with an electrical current, generates heat that can be used to ignite fuel in the firebox 130. FIG. 2B illustrates an exemplary internal composition of igniter coil 150, in which igniter coil 150 comprises an outer sheath of a conductive material 155 (e.g., stainless steel or 310S grade stainless steel, or other suitable conductive material now known or later discovered) ) , a filler material 156 (e.g., magnesium oxide or other suitable filler material now known or later discovered) , and an internal conductive material 157 (e.g., a nickel chromium alloy or 80 / 20 chromium nickel wire, or other suitable conductive material or wire know known or later discovered) .
[0032] The exemplary igniter coil 150 in FIG. 2A comprises a ring-shaped upper portion 151 and a terminal portion 152, which may be in electrical communication with the control unit 140. While upper portion 151 of igniter coil 150 is illustrated as being ring-shaped, it is understood that upper portion 151 may be any shape. The terminal portion 152 comprises two prongs 153a, 153b that extend downwardly from upper portion 151. The prongs 153a and 153b may contain opposing ends of the internal conductive material 157. Further, in some embodiments, the prongs 153a, 153b may be physically affixed to each other within the terminal portion 152. In other embodiments, the terminal portion 152 may have only one prong or more than two prongs depending on the desired configuration and application. In the example embodiment of FIG. 2B, the terminal ends 154a and 154b of prongs 153a and 153b may be curved upwardly towards upper portion 151 and away from prongs 153a and 153b. For instance, in an exemplary embodiment, the terminal ends 154a and 154b may be curved upwardly at an angle of curvature of approximately 155 degrees with respect to prongs 153a and 153b (e.g., the angle of curvature is measured between the terminal ends 154a and 154b and the prongs 153a and 153b) or 20.5 degrees with respect to a horizontal direction. It is understood however, that the angle of upward curvature of the terminal ends may be anywhere from about 120 degrees to about 170 degrees, including but not limited to about 120 degrees to about 130 degrees, about 130 degrees to about 140 degrees, about 140 degrees to about 150 degrees, about 150 degrees to about 160 degrees, and about 160 degrees to about 170 degrees, each range measured with respect to prongs 153a and 153b. As such, when igniter coil 150 is positioned in firebox 130, the terminal ends 154a and 154b may curve away from the firebox 130 and towards the outside of the grill, as described in greater detail in FIG. 5. This curvature positions the terminal ends 154a and 154b of the terminal portion 152 of the igniter coil 150 such that hot ash and debris from the firebox 130 is less likely to interfere with, or create electrical shorts at, the electrical connections between the internal conductor 157 of the igniter coil 150 and external wires delivering electrical energy to the internal conductor 157 during use.
[0033] In some embodiments, the prongs 153a and 153b may be of a suitable length to distance the terminal ends 154a and 154b away from firebox grate 135 to prevent hot ash and debris from the firebox 130 from interfering with the electrical connections between the internal conductor 157 of the igniter coil 150 and external wires delivering electrical energy to the internal conductor 157 during use. In an exemplary embodiment, the prongs 153a and 153b may be about 120mm long; however, it is understood that the length of the prongs 153a and 153b may be longer or shorter depending on the design. In other words, the terminal ends 154a and 154b can be about 120 mm away in a vertical direction from the firebox grate 135. The curved terminal ends 154a and 154b may span a horizontal distance of from about 60mm and about 80 mm, including but not about 70mm to about 75mm, and in a specific embodiment, 70.2mm.
[0034] In some embodiments, the terminal ends 154a and 154b of the terminal portion 152 may be configured to connect to an electrical connector (not shown) that is also connected to at least two external wires, such as lower-gauged copper wires, located outside of the terminal portion 152. In other embodiments disclosed herein, the terminal ends 154a and 154b may be configured to connect directly to respective external wires. The external wires, in turn, may be connected to the control unit 140 to supply an electrical current to, or apply a voltage across, the internal conductor 157 (i.e., through the terminal ends 154a, 154b) .
[0035] FIG. 3 illustrates an exemplary firebox grate 135 for receiving igniter coil 150. In this example, the firebox grate 135 generally comprises a flat body composed of a metal or another heat-conductive material that rests within a bottom portion of firebox 130. Firebox grate 135 may comprise a channel 137 for receiving upper portion 151 of igniter coil 150. Channel 137 may be approximately the same size and shape as upper portion 151 of igniter coil 150. Channel 137 may comprise a groove and, in this example, also may comprise one or more heat-dispersion openings 139 that allow heat to be dispersed from the igniter coil 150 during use. For example, FIG. 3 illustrates a plurality of heat-dispersion openings 139 along the groove of the exemplary channel 137. Firebox grate 135 also comprises an opening 138 for receiving the terminal portion 152 of the igniter coil 150, as illustrated for instance in FIGS. 4A-4C. For example, the terminal portion 152 may be configured to extend downwardly through the opening 138 and below a bottom surface of the firebox grate 135. In this exemplary embodiment, the prongs 153a and 153b of the terminal portion 152, for example, may extend downwardly through the opening 138.
[0036] Igniter coil 150 may be integrated with firebox grate 135, as illustrated in greater detail in FIGS. 4A-4C. Upper portion 151 of igniter coil 150 can rest in channel 137 of firebox grate 135. Terminal portion 152 can be placed through opening 138 so that its terminal ends 154a and 154b are located below the firebox grate 135. Additionally, one or more clips 170 can be used to affix the upper portion 151 of the igniter coil 150 to a top surface of the firebox grate 135. In some embodiments, the one or more clips 170 may be U-clips that are fastened to a top surface of firebox grate 135, although it is understood that any mechanism can be used to affix the upper portion 151 of the igniter coil 150 to the firebox grate 135, now known or later discovered. The clips may improve the contact area between the upper portion 151 and the firebox 135 which can allow the conductive firebox grate 135 to help distribute heat from the upper portion 151 more evenly within the firebox 130 and also help to better disperse heat away from the upper portion 151 when it is in use to ignite fuel in the firebox.
[0037] As shown in FIG. 5, when firebox grate 135 with igniter coil 150 affixed to its top surface is placed in firebox 130, the upper portion 151 of igniter coil 150 may be positioned so that it can contact fuel in the firebox 130 and ignite it. The igniter coil 150 and firebox 135 also serve as a heat spreader, such that heat can spread from igniter coil 150 to firebox grate 135 and evenly ignite fuel that contacts it. Terminal portion 152 of the igniter coil 150 extends downwardly from firebox grate 135 into an area below firebox grate 135 and towards an outer wall of base 120. As positioned, hot ash and debris from the firebox are less likely to interfere with the electrical connections between the external wires carrying electrical energy in response to control unit 140 and the internal conductor 157 that receives the electrical energy through the terminal ends 154a, 154b of the terminal portion 152 of the igniter coil 150.
[0038] Those skilled in the art will appreciate that other modifications and alternatives may be implemented in accordance with the exemplary embodiments described herein. For instance, while the igniter coil 150 is shown has having a ring-shaped upper portion 151, it is understood that the upper portion 151 can be formed into other shapes and the channel 137 of the firebox grate 135 adjusted accordingly.
[0039] While this invention has been described with reference to certain disclosed embodiments, it is to be understood that variations and modifications can be affected within the spirit and scope of the invention as described herein and as described in the appended claims. Accordingly, this description is to be taken only by way of example and not to otherwise limit the scope of the exemplary disclosed embodiments herein. Therefore, it is the object of the appended claims to cover all such variations and modifications as come within the true spirit and scope of the embodiments disclosed herein.
Claims
1.A fuel ignition system for use within a firebox of a cooking apparatus, the fuel ignition system comprising:a firebox grate positioned in a bottom portion of the firebox; andan igniter coil comprising an upper portion affixed to a top surface of the firebox grate and a terminal portion comprising at least one prong extending through the firebox grate to an area below the firebox grate;wherein an end of the prong is curved upwardly from the prong and towards an outer wall of the cooking apparatus.2.The fuel ignition system of Claim 1, wherein the firebox grate further comprises a channel for receiving the upper portion of the igniter coil.3.The fuel ignition system of Claim 2, wherein the channel comprises a groove and one or more heat-dispersion openings.4.The fuel ignition system of Claim 3, wherein the channel is ring-shaped and the upper portion of the igniter coil is ring-shaped, such that the igniter coil is configured to rest in the groove of the channel.5.The fuel ignition system of Claim 4, further comprising a plurality of clips for affixing the upper portion of the igniter coil to the top surface of the firebox grate.6.The fuel ignition system of Claim 5, wherein each of the plurality of clips comprise u-clips.7.The fuel ignition system of Claim 6, wherein the firebox grate further comprises an opening for receiving the prong of the igniter coil.8.The fuel ignition system of Claim 1, wherein the igniter coil comprises an outer conductive sheath, an inner conductor, and a filler.9.The fuel ignition system of any of Claims 1-7, wherein the cooking apparatus is a kamado-style grill.10.The fuel ignition system of Claim 9, wherein the cooking apparatus comprises a control unit.11.The fuel ignition system of Claim 10, wherein the igniter coil is electrically coupled to the control unit such that the igniter coil can be automatically ignited.12.The fuel ignition system of any of Claims 1-7, wherein the firebox grate is composed of a heat-conductive material.13.A fuel ignitor for use in a cooking apparatus comprising a firebox grate and a control unit comprising:an igniter coil comprising:an upper portion configured to be affixed to the firebox grate; anda terminal portion comprising at least one prong extending through the firebox grate;wherein an end of the prong is curved upwardly from the prong and towards an outer wall of the cooking apparatus; andwherein the igniter coil is electrically coupled to the control unit to cause the igniter coil to generate heat.14.The fuel ignitor of Claim 13, wherein the firebox grate further comprises a channel and the upper portion of the igniter coil is configured to rest in the channel.15.The fuel igniter of Claim 14, wherein the terminal portion comprises two prongs that extend downwardly from the upper portion.16.The fuel igniter of Claim 15, wherein the upper portion of the igniter coil is ring-shaped.17.The fuel igniter of any one of Claims 13-16, wherein the igniter coil comprises an outer conductive sheath, an inner conductor, and a filler.18.A kamado-style grill comprising:a firebox;a firebox grate positioned in a bottom portion of the firebox; andan igniter coil comprising an upper portion affixed to a top surface of the firebox grate and a terminal portion comprising at least one prong extending through the firebox grate to an area below the firebox grate;wherein an end of the prong is curved upwardly from the prong and towards an outer wall of the kamado-style grill.19.The fuel ignitor of Claim 18, wherein the firebox grate further comprises a channel and the upper portion of the igniter coil is configured to rest in the channel.20.The fuel igniter of Claim 19, wherein the terminal comprises two prongs that extend downwardly from the upper portion.21.The fuel ignition system of Claim 1, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of from about 120 degrees to about 170 degrees.22.The fuel ignition system of Claim 1, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of about 155 degrees.23.The fuel ignition system of Claim 1, wherein the end of the prong is located at a distance of about 120 mm from the firebox grate.24.The fuel igniter of Claim 13, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of from about 120 degrees to about 170 degrees.25.The fuel igniter of Claim 13, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of about 155 degrees.26.The fuel igniter of Claim 13, wherein the end of the prong is located at a distance of about 120 mm from the firebox grate.27.The kamado-style grill of Claim 18, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of from about 120 degrees to about 170 degrees.28.The kamado-style grill of Claim 18, wherein the end of the prong is curved upward at an angle of curvature with respect to the prong of about 155 degrees.29.The kamado-style grill of Claim 18, wherein the end of the prong is located at a distance of about 120 mm from the firebox grate.30.The fuel ignition system of Claim 8, wherein the outer sheath is composed of stainless steel, the filler material is composed of magnesium oxide, and the internal conductive material is composed of a nickel-chromium alloy.31.The fuel igniter of Claim 17, wherein the outer sheath is composed of stainless steel, the filler material is composed of magnesium oxide, and the internal conductive material is composed of a nickel-chromium alloy.