Adjustable gas burner, gas burner system including an adjustable gas burner, and appliance including a gas burner system

Abstract

A gas burner system 100 comprises a burner assembly 110 with an ignition system 160 and an adjustable burner arm 170, a motion assembly (350, Fig. 7) with a motor (435, Fig. 8) and a gear system (410,

Description

FIELD OF THE DISCLOSURE

[0001] This disclosure relates to gas burners. An example gas burner can be used in a gas cooktop or stovetop, a gas range or stove, etc. (collectively referred to as gas cooking appliances). However, the gas burner can be used with other appliances that use a gas burner.

[0002] This disclosure relates to an adjustable gas burner assembly for a gas burner system, such as for use in a gas cooking appliance. This disclosure also relates to an adjustable gas burner assembly having an adjustable burner arm. This disclosure further relates to a gas burner system having the adjustable gas burner assembly.

[0003] This disclosure relates to a gas and air mixing assembly for a gas burner system. This disclosure also relates to a gas and air mixing assembly having one or more gas and air mixing chambers. This disclosure further relates to a gas burner system having the gas and air mixing assembly.

[0004] The disclosure relates to a motion assembly for a gas burner system. The disclosure also relates to a motion assembly having a motor and a gear system. This disclosure further relates to a gas burner system having the motion assembly.

[0005] The disclosure relates to a knob assembly for a gas burner system. The disclosure also relates to a gas burner system having the knob assembly. BACKGROUND

[0006] One example environment for a gas burner system is a kitchen gas cooktop appliance. A conventional gas cooking appliance with a conventional gas burner can include, for example, a traditional circular-shaped burner. A gas cooking appliance might include one or more burners of varying sizes, the burners may be sealed or open on top. A knob may operate to both ignite and control the size of flame or flame area produced by the burner. A user may use a smaller burner for smaller cooking vessels and a larger burner for larger cooking vessels. Although a user may be able to adjust the size of flame, e.g., to accommodate a smaller or larger cooking vessel, the resulting heat zone may not be adequate for the application. For example, a user may desire to increase the size of the flame to quickly heat a cooking vessel. However, in some applications, increasing the size of the flame may conversely cause the flames to spill beyond the edge of the cooking vessel. In another scenario, a user may desire to keep a large cooking vessel at low heat. Resorting to using larger flames may make it difficult to control a desired temperature.

[0007] A new and useful adjustable gas burner, a gas burner system including the adjustable gas burner, and an appliance including the adjustable gas burner system are desired. SUMMARY

[0008] For some environments, using an adjustable burner arm to adjust the size of the usable flame area or heat zone can enable a user to accommodate pans of different sizes while still controlling the size of the flame. This would allow a user to avoid heat loss when the gas flow is increased, for example, when the flame area spreads beyond the cooking vessel. Conversely, when gas flow is reduced, an adjustable burner arm can be used to increase the usable flame area while maintaining a smaller flame. Thus, in embodiments, an adjustable gas burner system can adjust the size of the usable flame area while additionally allowing a user to control the size of the flame produced by the burner. Also, an adjustable gas burner system can produce a larger usable flame area compared to conventional gas burners.

[0009] In one or more embodiments, this disclosure relates to a gas burner system comprising a burner assembly including an ignition system and an adjustable burner arm. The gas burner system further comprises a motion assembly including a gear system coupled to the adjustable burner arm and a motor coupled to the gear system. The burner system additionally includes a controller for controlling the burner assembly and the motion assembly. The adjustable burner arm is moveable between a first position and a second position, and the adjustable burner arm is adjustable to a location between the first position and the second position. The adjustable burner arm is a first adjustable burner arm, and the burner assembly further includes a second, third, and fourth respective adjustable burner arm and the gear system is coupled to the second, third, and fourth respective adjustable burner arm.

[0010] In one or more embodiments, this disclosure relates to a gas burner system comprising an ignition system, a primary adjustable burner arm, a secondary adjustable burner arm, and a motor coupled to the primary adjustable burner arm, the motor configured to control the primary adjustable burner arm and the primary adjustable burner arm configured to control the secondary adjustable burner arm. The primary adjustable burner arm and the secondary adjustable burner arm are adjustable within a range between a first position and a second position. The first position is a retracted position, and the second position is an expanded position, and the gas burner system produces a smaller heat zone in the retracted position and a larger heat zone in the expanded position. The gas burner system further includes a controller to operate the primary adjustable burner arm and the secondary adjustable burner arm. The controller includes a knob assembly comprising a knob configured to control the ignition system and a flow of gas and air mixture of the gas burner system, and a knob bezel configured to control the motor. Rotating the knob bezel in a first direction causes the primary adjustable burner arm to rotate in the respective first direction, and rotating the knob bezel in a second direction causes the primary adjustable burner arm to rotate in the respective second direction.

[0011] In one or more embodiments, this disclosure relates to a cooking appliance having the gas burner system.

[0012] These and other features, advantages, and embodiments of apparatus and methods according to this invention are described in, or are apparent from, the following detailed descriptions of various examples of embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various examples of embodiments of the systems, devices, and methods according to this invention will be described in detail, with reference to the following figures.

[0014] FIG. 1 shows a first prior art example of a gas burner.

[0015] FIG. 2 shows a second prior art example of a gas burner.

[0016] FIG. 3 is a top view of an example heat zone produced by a prior art gas burner.

[0017] FIG. 4A is a perspective view of an example adjustable gas burner system in a retracted position.

[0018] FIG. 4B is a top view of the adjustable gas burner system of FIG. 4A in an expanded position showing an example heat zone.

[0019] FIG. 5 shows an isometric view of a second example adjustable gas burner system.

[0020] FIG. 6 shows a sectional view of the adjustable gas burner system of FIG. 4A, 4B as viewed along line 6-6.

[0021] FIG. 7 is a perspective view of the adjustable gas burner system of FIG. 4A, 4B with components hidden to show inner environment.

[0022] FIG. 8 is a lower perspective view of the adjustable gas burner system of FIG. 4A, 4B showing the gear system with lower housing plate removed.

[0023] FIG. 9 is a sectional view of the adjustable gas burner system of FIG. 7 as viewed along line 9-9.

[0024] FIG. 10 is an isometric view of gear system and the motor assembly shown independently from the adjustable gas burner system of FIG. 4A, 4B.

[0025] FIG. 11 represents an example knob for use with the adjustable gas burner system of FIG. 4A, 4B.

[0026] It should be understood that the drawings are not necessarily to scale. In certain instances, details that are not necessary to the understanding of the invention or render other details difficult to perceive may have been omitted. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein.

[0027] Within the scope of this application, it is expressly intended that the various aspects, embodiments, examples, and alternatives set out in the preceding paragraphs, and the claims and / or the following description and drawings, and in particular the individual features thereof, may be taken independently or in any combination. That is, all embodiments and all features of any embodiment can be combined in any way and / or combination, unless such features are incompatible. The applicant reserves the right to change any originally filed claim or file any new claim accordingly, including the right to amend any originally filed claim to depend from and / or incorporate any feature of any other claim although not originally claimed in that manner. DETAILED DESCRIPTION OF THE DRAWINGS

[0028] One or more specific embodiments will be described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation are described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers’ specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0029] FIGS. 1-3 show prior art gas burners 10A, 10B in a cooktop appliance environment. Various gas fuels (e.g., propane, butane, natural gas, etc.) can be used. Gas burners 10A, 10B may be ignited using a pilot light or an electric ignition source (e.g., an igniter). Conventional burners vary in size and may be open (10A) or sealed (10B), for example, with a burner top. Other burner types and variations are known. The gas burners of FIGS. 1 and 2 are used for showing some of the underlying elements of a gas burner and for providing background to the adjustable gas burner (or burner systems) described herein.

[0030] FIG. 3 shows an example flame area or heat zone produced by a traditional sealed burner 10A. A user may adjust the flow of gas to increase or decrease the size of the flame produced by the burner to accommodate different cooking vessels. Although a user may adjust the flow of gas, the flame area may not adequately nor evenly heat the cooking vessel. In some scenarios, the flames may be too large for the cooking vessel or too inconsistent to achieve a desired result. Further, a user may not be able adequately direct heat in the manner desired.

[0031] An adjustable gas burner according to the present disclosure allows a user to control the size of the flame produced by the burner while simultaneously controlling the size of the usable flame area. For example, when the gas flow is reduced, and the flame produced is smaller, adjustable burner arms can be rotated outwards to increase the flame area and apply heat more evenly to the cooking vessel while still maintaining a reduced gas flow. In the opposite scenario, when gas flow is increased and the flame produced is larger, the burner arms can be rotated inwards to keep the flame focused on the bottom of the cooking vessel as opposed to spilling beyond the sides of the cooking vessel. While the adjustable gas burner is described for use with, for example, a residential cooking appliance, it should be appreciated that other applications are possible. Such applications include, but are not limited to, professional / commercial gas cooking appliances, stand-alone cooking appliances, stand-alone gas burner systems, portable gas burner systems, outdoor cooking appliances, grill systems, camping gas stove systems, laboratory gas burner systems, etc.

[0032] Referring to FIGS. 4A and 4B, a first adjustable gas burner system 100 is disclosed. FIG. 4A shows an isometric view of an example adjustable gas burner system 100 in a compacted / retracted position. The adjustable gas burner system 100, also referred to hereinafter as gas burner system or burner system, may operate similarly to a conventional style burner, for example, using a knob to operate an igniter and to adjust a flow of gas. In the first example, the adjustable gas burner system 100 occupies a compacted position when in an off state. In operation, a user may choose to keep the adjustable gas burner in the compact position to accommodate smaller cooking vessels or to direct heat to a centralized location beneath a cooking vessel. In some examples, a knob (such as in FIG. 11) may be used to actuate rotation of the adjustable burner arms in addition to controlling a flow of gas at the burner. A user may partially or fully extend the burner arms within a set movement range to adjust the usable flame area or size of heat zone produced by the adjustable gas burner system 100. For example, FIG. 4B shows an example heat zone of an adjustable gas burner in an expanded position. However, a user may position the burner arms along any location between the compact and expanded positions. In the figure, flames of various sizes are shown to demonstrate the range of flame sizes possible. An outline of an example heat zone is shown in broken lines. In the illustration, the outline signifies an example minimum and maximum size flame produced by the burner system 100. It should be understood that the outline is an arbitrary identifier and the flames produced may not always be consistent in size. In some situations, it may be desirable for a user to fully extend the burner arms while choosing to maintain a reduced gas flow. This may be particularly useful, for example, when a user needs to apply low or moderate heat to a larger cooking vessel, without the need to increase gas flow or increase flame size. Thus, in this and other examples, the adjustable gas burner system 100 functions to provide a user greater control over the desired heat zone, making it easier to apply and / or distribute heat in a more even manner.

[0033] At a high level, the adjustable gas burner system 100 includes a gas burner assembly 110, a gas and air mixture assembly 265, and a motion and control assembly 350. To facilitate describing an example adjustable gas burner system 100, portions of the burner assembly 110 will be described in conjunction with an upper assembly 115, which may also be considered the portion of the gas burner system 100 viewable to a user when installed. Referring again to FIG. 4A, the upper assembly 115, includes upper housing plate 120. Upper housing plate 120 (hereinafter referred to as plate) can be die cast and machined to specification. In the illustration, plate 120 is substantially circular and an upper surface 121 includes structural projections 125 to receive additional components of the upper assembly 115. A lower surface 126 of plate 120 can additionally include structural projections 125. In one example, the structural projection 125 may extend from upper surface 121 to facilitate coupling a component of a central burner. In another example, the structural projection 125 may extend from lower surface 126 and may be shaped or configured to enclose internal components of the burner system 100. In other words, structural projections 125 can serve more than one purpose. In the example shown, plate 120 functions as both a mounting point as well as a housing component (e.g., enclosing internal components of the burner system 100). Side surface 122 extends from a perimeter edge 123 of plate 120; together, side surface 122 and plate 120 form a cap or cover-like structure. An annular lip or edge 124 protrudes around the circumference of side surface 122. In some examples, edge 124 may be a mounting point, for example, to install the adjustable gas burner system 100 in a gas cooktop environment. Plate 120 further includes a plurality of apertures 130 which are disposed in projections 125 to accommodate components of the upper assembly 115. In the construction in the figures, structural projections 125 and apertures 130 serve as both a mounting point for various burners (and their components) and additionally facilitate a flow of gas and air mixture to each of the burners.

[0034] A substantially cylindrically shaped center burner 135 is provided centrally located on plate 120. An axis of plate 120 aligns with an axis of the center burner 135 along Al. In the example, a portion 136 of the center burner 135 is inset or indented to accommodate an ignition source. In other examples, the ignition source may be located beyond an outer circumference of the center burner. Center burner 135 may be integral with plate 120 or a separate component coupled thereto. It should be understood that center burner 135 is fixed or stationary relative to the adjustable burner arms. In the construction shown, center burner 135 includes a hollow column 140 extending distance DI (FIG. 6) from plate 120 and a circular shaped burner head cover 145 coupled to an upper end 150 of column 140. Head cover 145 may be fastened to upper end 150 with a fastener or may be freely resting. In the example, burner head cover 145 is sized and shaped to cap or cover upper end 150, forming an enclosed space. In some examples, such as the example shown in FIG. 4A, a perimeter edge 146 of burner head cover 145 extends beyond an outer surface 142 of column 140 such as to overhang the upper circumferential edge of column 140. The perimeter edge 146 may be curved and act to uniformly guide the flame produced by the center burner. Burner head cover 145 additionally includes a sealing edge 147 provided on an underside surface 148 of the burner head cover. Best shown in the sectional view of FIG. 6, sealing edge 147 may extend within upper end 150 such that the sealing edge matches an inner profile of column 140. Moreover, sealing edge 147 may be shaped to match a profile of an inner surface 141 of column 140. When assembled on column 140, perimeter edge 146 and sealing edge 147 prevent gas and air mixture from escaping through the top of center burner 135.

[0035] Upper end 150 further includes a plurality of apertures 155 extending from an inner surface 141 to an outer surface 142 of column 140. In the example shown in the figures, apertures 155 are formed around a circumference of column 140 to allow the release of gas and air mixture. In the figures, apertures 155 are consistently spaced around the circumference of column 140 to prevent flame overlap. However, in other examples, apertures 155 may not span the entire circumference of column 140. Although a limited number of flames are shown in FIG. 4B for example, center burner 135 may have a varying number of apertures 155. Apertures 155 may be any standard or non-standard geometric shape including but not limited to square, circular, or rectangular shaped apertures. In some examples, apertures 155 may taper from one end to another or may be elongated in either a vertical or horizontal plane. It should be understood that many different combinations of shapes of apertures are possible. In the example shown, burner head cover 145 provides the means to cap upper end 150 of column 140 such that the flow of gas within center burner 135 changes directions from a first direction to a second direction. More specifically, burner head cover 145 may aid in directing the flow of gas and air mixture to apertures 155 and out of center burner 135 to the external environment. Additionally, while center burner 135 is shown and described in conjunction with adjustable burner arms, the center burner may operate independently to serve alternative functions. For example, center burner 135 may function as a simmer burner, capable of producing smaller gauge flames. In such an example, gas / air mixture can be cut off from burner arms 170.

[0036] In the example in FIGS. 4A and 4B, an ignition system 160 is provided to ignite the center burner 135. The example ignition system can include an igniter 162, a spark module 164, and a controller. High voltage sent to the igniter 162 is used to create an initial spark, which is amplified by spark module 164. In the construction, the ignition system 160 is positioned adjacent to but spaced from center burner. Igniter 162 may be mounted at an aperture 130 of plate 120. The spark module 164 of igniter 162 can extend a distance D2 from plate 120. A non-exposed portion of the igniter can extend within plate 120 and may be electrically coupled to the burner system 100. In a non-limiting example, a knob may be used to operate the igniter. In other examples however, an alternative operational mechanism may be used including but not limited to, for example, a mechanical button or switch. A user may additionally, or alternatively activate the igniter using an application or program configured for use on an electronic device (cell phone, remote, smart device, etc.) or a (touch) display provided on the cooktop. Ignition system 160 may comprise any standard electrical ignition system or source, such as an electronic ignition system. However, it should be understood that other ignition sources are possible. For example, ignition system 160 may, in some examples, include a pilot light to ignite the adjustable gas burner system 100.

[0037] FIG. 5 shows a second example adjustable gas burner system 100B. In the construction shown, plate 120B operates as a central burner 135B. Igniter 160B is disposed adjacent to but spaced from an outer surface of column MOB. In the example, igniter 160B is provided at edge 124B. An upper end 150B of column MOB includes a plurality of apertures 155B. In the construction, an upper surface of the central burner 135B is configured with four adjustable gas burner arms which may be coupled to structures 125B at apertures MOB. Other configurations are possible. In this example, the usable flame area or heat zone exists on more than one plane. Similar to the first example, central burner 135B can operate as a simmer burner.

[0038] Referring again to FIGS. 4A and 4B, burner assembly 110 includes adjustable gas burner arms 170 to adjust the shape and size of the usable flame area of the burner system 100. In a non-limiting example, four adjustable gas burner arms 170 (referred to herein as gas burner arms, burner arms, or arms) are shown. Although, it should be understood that other combinations or numbers of arms are possible (e.g., two arms, three arms, five arms, etc.). In the figures, each arm 170 is shaped to assemble into, or form, a circular orientation when in a fully retracted or compact position. This orientation is advantageous when igniting the adjustable gas burner system 100. However, the adjustable burner arms can additionally be ignited when in an expanded position. Individually, burner arms 170 may resemble a crescent shape (e.g., kidney shape, bean shape, etc.) or similar geometrically compatible shape that allows for retracting in the manner shown and described. In the figures, burner arms 170 are substantially curved having an inner curved surface 175, and an outer curved surface 180. Width W1 separates inner curved surface 175 and outer curved surface 180. Inner and outer surfaces 175, 180 may also be considered to have an arching or arcuate shape. For example, in a non-limiting example, inner surface 175 may match a contour or profile of a circumference of center burner 135. In other examples, the burner arms 170 may be bent as opposed to curved. Other shapes of burner arms are possible. In the construction, inner surface 175 and outer surface 180 extend from bottom surface 185.

[0039] Each burner arm 170 includes a first end 190 and a second end 195. First end 190 can be understood to be anchored, but rotatable about a mounting point, while second 195 may be understood to be freely movable. Arc 193 (FIG. 7) separates first end 190 and second end 195. In the construction shown in FIGS. 4A and 4B, each respective end 190, 195 is substantially round or semi-circular including respective curved surfaces 200, 205. A diameter of the semi-circular ends 190, 195 may be substantially similar to width Wl. In the figures, curved surfaces 200, 205 extend from bottom surface 185 such that inner and outer surfaces 175, 180 and curved surfaces 200, 205 form a bean-shaped column 210. Each burner arm 170 is provided with a plurality of apertures 220 formed around a perimeter of column 210 adjacent an upper end 225 of column 210. Apertures 220 may have a similar shape to apertures 155 and can extend from an inner surface 211 of column 210 to an outer surface 212. It is envisioned that apertures 220 may be any standard or non-standard geometric shape including but not limited to square, circular, or rectangular shaped apertures. Apertures 220 can taper from one end to another or may be elongated in either a vertical or horizontal plane. It should be understood that many different combinations of shapes of apertures are possible.

[0040] A burner arm head cover 230 is provided to cover each burner arm 170. Burner arm head cover 230 is sized and shaped to cap or cover an upper end 225 of column 210. In the example shown, a perimeter edge 231 of burner head cover 230 extends beyond an outer surface 212 of column 210 so as to overhang the upper circumferential edge of column 210. Burner arm head cover 230 additionally includes a sealing edge 232 provided on an underside surface 233 of the burner arm head cover. As shown in the cross-sectional view of FIG. 6, sealing edge 232 may extend within upper end 225 such that the sealing edge matches an inner profile of column 210. That is, sealing edge 232 may be shaped to match a profile of an inner surface 211 of column 210. Thus, bottom surface 185, column 210, and burner arm head cover 230 form an enclosed space 235. First end 190 of burner arm 170 may be mounted about axis A2 within closed space 235 as is shown in FIG. 9. Each burner arm 170 is coupled to aperture 130 and mounted to structure 125 using a fastener. Aperture 130 and mounting structure 125 additionally serve as a means to supply each burner arm 170 with gas / air mixture from beneath the unit. Referring again to FIG. 6, burner arms 170 extend a distance D3 from plate 120 such that both the center burner 135 and each burner arm 170 extend substantially coplanar for even heat distribution (i.e., D3 is substantially similar to DI). In other words, flames produced by center burner 135 and each individual burner arm 170 may be substantially coplanar. In the example in FIG. 4A, the burner system 100 is a fully compact, such as when first igniting the burner system. When retracted, burner arms 170 do not overlap one another and the ends 190, 195 of each burner arm are sufficiently spaced from one another. This may be beneficial to prevent hot zones from forming, for example, where flames from a first burner arm 170A may overlap with flames from a second burner arm 170B. However, it is envisioned that the burner arms 170 form an annular or ring-like shape around the center burner 135 when fully compact. Accordingly, when a user ignites the burner system 100, the center burner 135 ignites first, before passing the flame to each individual burner arm 170.

[0041] When actuated, burner arms 170 may rotate about first end 190 to increase or decrease the overall size of the burner system 100 or the usable flame area. Meaning, a single adjustable burner system 100 may be suitable for a range of cooking vessels, for example, six to twelve inches in diameter. One of skill in the art can appreciate that the adjustable burner system 100 described herein is scalable; smaller and larger applications are possible. Burner arms 170 may rotate within a defined range, for example, zero degrees (when fully compact) to ninety degrees (when fully expanded). Smaller or greater ranges (degrees) of rotation are possible; however, the shape of the burner arms 170 may be a limiting factor of rotation. Additionally, whether the system includes a raised center burner 135 may also impact burner arm rotation. In the example shown, burner arms 170 are displaced at length LI from axis Al when compact. When fully extended, burner arms 170 may reach a maximum displacement of L2 from axis Al (i.e., L2 is greater than LI). For the construction in the figures, each burner arm 170 rotates in unison with one another. Thus, the adjustable gas burner system 100 can increase or decrease in size at a constant rate. In other examples, each burner arm 170 may individually rotate (i.e., each arm may move independent of one another) to reach a desired orientation. This may be useful, for example, to heat cooking vessels having different shapes (e.g., rectangular, oval, etc.). Accordingly, the adjustable gas burner system 100 may advantageously provide the same or better heating capabilities when compared to a multi-unit or modular gas burner system.

[0042] Referring to FIGS. 6 and 8, the adjustable gas burner system 100 additionally includes a lower assembly 250 opposite upper assembly 115. In the figures, lower assembly 250 represents the components of burner system 100 not visible to a user when the burner system 100 is installed (i.e., the inner / lower components of the system). Best shown in FIG. 6, lower assembly 250 includes, in first part, a lower housing plate 255 configured to couple to plate 120 and to enclose a portion of the burner system 100. One or more apertures 260 are provided on plate 255 facilitate passage for components of the gas burner system 100. The lower assembly additionally includes a gas and air mixture assembly 265 and a motion and control assembly 350.

[0043] A gas source can be coupled to the gas and air mixture assembly 265 by way of a dual gas orifice apparatus 270. Dual gas orifice apparatus (also referred to as gas orifice apparatus, or simply apparatus) 270 functions to receive one or more gas sources to support both the central burner 135 and each adjustable gas burner arm 170. Gas orifice apparatus 270 may be machined from aluminum, steel, brass, or alloy thereof. In the example construction, apparatus 270 includes two inlets 275 and two outlets 280. Inlets 275 can differ slightly, for example, a first inlet may have a first diameter, while a second inlet may have a second diameter, greater than the first diameter. In other examples, inlets may have consistently sized diameters. Gas sources, including but not limited to butane, propane, natural gas, etc., can be coupled via tubing, hose, or other conventional means to inlets 275. For the example in the figures, a first inlet is provided on a first surface 271 of apparatus 270 and a second inlet is provided on a second surface 272, opposite the first surface. In other examples, both inlets may be provided on the same surface. Within apparatus 270, passageways couple a respective inlet 275 to a respective outlet 280 such that one inlet leads to one outlet. The passageways may include one or more bends or curves. In the example shown, outlets 280 extend vertically from within apparatus 270 to upper surface 273. Generally, outlets 280 may resemble cavities having a substantially cylindrical inner shape in part. A portion of each outlet 280 may be countersunk within upper surface 273. In the construction in the figures, outlets 280 are arranged adjacent one another but spaced apart slightly. As shown, outlets 280 are provided with threads 285 to facilitate coupling to orifices 290, 295, which provide a means to throttle gas exiting from apparatus 270. However, other means of fastening are possible. Best shown in the sectional view, orifices 290, 295 include a hollow channel or passage extending through a center column-like structure. A first end of each orifice 290, 295 is threaded to be coupled to a respective outlet 280, while a second end is open-ended to exhaust gas from the apparatus 270. In the illustration, orifices 290, 295 have varying diameters, e.g., to accommodate varying burner types such as the central burner 135 and adjustable burner arms 170. For example, an adjustable gas burner system 100 having a smaller central burner and larger adjustable burner arms may correspond to a smaller orifice diameter to feed the central burner and a larger orifice diameter to feed the adjustable gas burner arms. It should be understood that this example is non-limiting. Moreover, the dual gas orifice apparatus 270 can have outlet orifices 290, 295 of differing diameters allowing for greater or reduced gas flow to each burner type, depending on the necessity. In the example construction, orifices 290, 295 are separate components coupled to apparatus 270. In other examples, orifices 290, 295 may be integral apparatus 270.

[0044] The gas and air mixture assembly 265 additionally includes a first gas and air mixing chamber 300, and second gas and air mixing chamber 320, which may be integral with one another. In the construction, first and second gas and air mixing chambers 300, 320 are integral and form a singular component configured to direct the flow of gas and air mixture in first part, to the central burner 135, and in second part, to each respective burner arm 170. Gas exiting the dual gas orifice apparatus 270 follows one of two respective gas passageways, also referred to herein as gas path 1 (GP1), and gas path 2 (GP2), and into respective first and second gas and air mixing chambers 300, 320 where air is mixed with gas before traveling to each burner. Standard fasteners may be used to couple first and second gas and air mixing chambers 300, 320 to plate 120. While the example shows first and second mixing chambers 300, 320 as a singular member, each respective chamber 300, 320 may instead be provided as separate components.

[0045] FIG. 6 shows the first gas and air mixing chamber 300 positioned above outlet 280 to receive gas from orifice 290. In the example, mixing chamber 300 is displaced a distance D4 from orifice 290 to allow air to enter the chamber in combination with the gas. Mixing chamber 300 may be generally cylindrical in shape and can extend vertically a distance D5 to meet and couple to lower surface 126 of plate 120. An inner profile of mixing chamber 300 can resemble an hourglass shape. For example, in the construction shown, a lower end 305 of mixing chamber 300 is chamfered, including an annular beveled surface 310 to direct gas and air mixture inwards towards a hollow center cavity 301 of chamber 300. Beveled surface 310 may extend from lower end 305 a distance D6 into cavity 301. Above beveled surface 310, an inner surface 315 of mixing chamber 300 comprises an upper angled surface which extends a distance D7. A profile of cavity 301 may taper, from either end 305 or lower surface 126 of plate 120, towards the transition point 302 between beveled surface 310 and inner surface 315. In the example shown, transition point 302 has a smaller diameter compared to the diameter of chamber 300 at end 305 and at the end adjacent plate 120, thus forming a funnel-like shape on either side of transition point 302. Generally, beveled surface 310 functions to funnel, and in some cases, limit the amount of gas and air mixture passing into the chamber. Referring to the arrows in the example in FIG. 6, upper angled surface 315 functions to aid in mixing the gas and air mixture and to aid in directing the flow of the gas and air mixture (i.e., GP1). Thus, in many examples, distance D7 may be greater than distance D6; however, other orientations are possible. It should be appreciated that distances D4-D7 are shown in an arbitrary manner and are not exact; distances D4-D7 can vary depending on the desired gas to air ratio. Also, it should be understood that the shape, size, and orientations of both beveled surface 310 and upper angled surface 315 can vary. For example, beveled surface may extend at an angle relative to lower end 305 ranging from ten to eighty degrees, which may limit or allow gas and air to enter chamber 300. Conversely, upper angled surface 315 can extend at an angle relative to the lower surface 126 of plate 120 ranging from, for example, thirty to eighty-five degrees. It should be understood that these ranges are meant to be non-limiting examples.

[0046] Referring again to the arrows in the example of FIG. 6, gas path 1 begins at inlet 275 and passes through dual gas orifice apparatus 270 before being diverted to outlet 280, through orifice 290, and into first gas and air mixing chamber 300. GP1 continues through plate 120 by way of aperture 130 and into the enclosed space within column 140 of center burner 135 before being expelled via the plurality of apertures 155 to an outer environment. While GP1 is shown in the figures as being relatively straight (i.e., not including many bends or curves), one or more surfaces may cause GP1 to change directions or to advance gas and air mixture to the burner. For example, inner surface 315 of chamber 300 or the lower surface 126 of plate 120 may urge the gas and air mixture along the passageway.

[0047] With reference to FIGS. 6 and 7, the gas and air mixture assembly 265 includes a second gas and air mixing chamber 320. The second mixing chamber 320 can have a first region 320A and a second region 320B coupled above the first region. The first region 320A of the second mixing chamber is substantially cylindrical and is positioned above the dual gas orifice apparatus 270. In the figures, the first region 320A of the second mixing chamber is positioned a distance D4 above orifice 295. Like the first gas and air mixing chamber 300, the first region of the second mixing chamber 320 comprises a hollow inner cavity 321 to facilitate mixing of air and gas. Inner cavity 321 may have an hourglass profile which extends vertically a distance D8 from lower end 325 to lower surface 126. In the example, inner cavity 321 extends a distance D9 from lower end 325 to intersection 340 which will be described later. Gas and air entering lower end 325 of mixing chamber 320 is guided or funneled into cavity 321 by a chamfered surface 330. In the construction shown, chamfered surface 330 is an angled surface, having an annular profile which is beveled inwards towards cavity 321. The profile may function as a funnel shape configured to direct the gas and air mixture inwards and upwards towards cavity 321. Surface 330 may extend a distance D10 from lower end 325 into cavity 321 of the second gas and air mixing chamber 320. Above beveled surface 330, an inner surface 335 of mixing chamber 300 comprises an upper angled surface which extends a distance Dll from lower surface 126 into cavity 321. A profile of cavity 321 can taper, from either end 325 or lower surface 126, towards the transition point 322 between beveled surface 330 and inner surface 335. In the example shown, transition point 322 has a smaller diameter compared to the diameter of chamber 300 at end 325 and at the end adjacent plate 120. In other words, the differing diameters form a funnel-like shape on either side of transition point 322. It should be appreciated that distances D4, D8, D10, and Dll are shown in an arbitrary manner and are not exact. Moreover, these distances can vary. Also, it should be understood that the shape, size, and orientations of both beveled surface 330 and upper angled surface 335 may differ compared to the representation in the figures. In various examples, beveled surface may extend at an angle relative to lower end 325 ranging from ten to eighty degrees, which may limit or allow gas and air to enter chamber 300. Upper angled surface 335 can, for example, extend at an angle relative to the lower surface of plate 120 ranging from thirty to eighty-five degrees.

[0048] Referring now to FIG. 7, the second region 302B of mixing chamber 320 comprises an intersection 340 and a perimeter region 345. In some examples, the second region 320B may be integral with the first region 320A. In other examples, the second region 320B can be coupled to the first region 320A. In the construction shown, the first and second regions of the second mixing chamber 320 are integral with one another, forming a single or unitary component. More specifically, the second region 320B is positioned co-axial with first region 320A. In the figure, intersection 340 comprises a substantially cross-like shaped channel structure making up a central portion 350 of the second region 320B. Intersection 340 is positioned above the first region 320A, more specifically, above cavity 321. Perimeter region 345 comprises an annular or ring-shaped channel structure occupying an outer region 355 and surrounding the central region 350. Intersection 340 and perimeter region 345 are coupled to one another such that gas and air mixture flows unobstructed from intersection 340 into perimeter region 345. In the example, intersection 340 and perimeter region 345 are formed as a single component and additionally include support structures 360 formed in the hollows between intersection 340 and perimeter region 345. Support structures 360 may accommodate additional components of the burner system 100, such as for example, igniter 160 or first gas and air mixing chamber 300. In one or more locations, the perimeter region 345 can include apertures 365 to facilitate fastening components of the burner system 100. Best represented in FIG. 6, a height of intersection 340 and the perimeter region 345 is the difference between distances D8 and D9. In Figures 6 and 7, respective inner walls 370, 375 of intersection 340 and perimeter region 345 are spaced respective distances D12 and D13 apart. In the example shown, D13 is greater than D12. However, it should be appreciated that these distances are arbitrarily shown and may not be exact, other configurations are possible.

[0049] In FIG. 7, arrows show potential paths for the gas and air mixture traveling along gas pathway 2. Intersection 340 and perimeter region 345 serve to evenly split the gas and air mixture traveling along GP2 into one of four directions before directing the mixture to a respective burner arm 170. In the example, plate 120 is fastened above mixing chamber 320. When coupled to plate 120, intersection 340, perimeter region 345, and the lower surface 126 of plate 120, together, form a network of enclosed gas paths for the gas and air mixture to travel within. The network of gas paths form a singular, contiguous volume. In another example, burner arms 170 can be fed from a singular larger volume as opposed to a network of gas paths. In the example in the illustration, intersection 340 is a four-way intersection. However, other implementations are possible, for example, a two-way intersection may be sufficient for a gas burner system 100 having only two adjustable burner arms 170. Generally, intersection 340 comprises the same number of outlets as there are burner arms. As shown, gas and air mixture traveling from the first region 320A of mixing chamber 320 is directed from intersection 340 to perimeter region 345 before being urged to one of the four burner arms 170. In the example construction, each respective burner arm is located in an area above the perimeter region, and specifically positioned split equidistant (path-wise) between an outlet (341-344) of intersection 340. For example, gas and air mixture traveling to burner arm 170A may make passage from either outlet 341 or outlet 342.

[0050] In the example, gas path 2 begins at inlet 275 and passes through dual gas orifice apparatus 270 before being diverted to outlet 280, through orifice 295, and into second gas and air mixing chamber 320. GP2 continues through the first region 320A of mixing chamber 320 before passing into the second region 320B. Gas path 2 is evenly divided at intersection 340 before flowing to perimeter region 345. From the perimeter region, GP2 is directed through structures 125 and apertures 130 of plate 120 and into the enclosed space within columns 210 of each respective burner arm 170 prior to being expelled via the plurality of apertures 220 to an outer environment. Comparatively to GP1, GP2 includes a plurality of curves or bends causing the gas and air mixture to change directions. As is shown in the figures, mixing chamber 320 comprises curved or rounded inner surfaces, especially with reference to intersection 340 and perimeter zone 345. Rounded surfaces 346 in the perimeter zone may help to direct passage of the gas and air mixture. Moreover, the structural design of mixing chamber 320 may advantageously aid in evenly distributing gas and air mixture to each respective burner arm 170.

[0051] Referring now to FIGS. 8-11, an example motion and control assembly 400 is shown. The motion and control assembly can include a gear system 410, a motor assembly 430, and a controller 450. FIG. 8 shows a perspective view of the lower assembly 250 with the lower housing plate 255 removed. In the example, gear system 410 is an epicyclic gear set or gear train, also referred to herein as a planetary gear system. Gear system 410 may include a central or sun gear 415, planetary gear(s) 420, and a carrier 425. Sun gear 415 and planetary gear(s) 420 can be spur gears which mesh with one another, i.e., sun gear 415 and planetary gear(s) 420 have compatible teeth. In the example, axis of the sun gear 415 and planetary gear(s) are parallel with one another. Sun gear 415 and planetary gear(s) 420 may have varying gear ratios, such as for example, 40:15 or 2.67 to 1. In the construction, sun gear 415 has a plurality of teeth 416 formed around an outer circumference. A central region of the sun gear 415 includes a guide slot 417 and an aperture 418. One or more guide slots 417 may be disposed adjacent the outer circumference of sun gear 415. In the example, guide slots 417 have a rounded, arcing shape and are configured to receive guideposts or pins 426 extending from carrier 425. It should be appreciated that both the size of the arc length and the gear ratio can affect the extent to which each adjustable burner arm 170 may rotate. In examples having 1:1 gear ratio, a smaller arc length slot serves to limit the amount of rotation, while a larger arc length slot can increase the amount of rotation. Generally, it is envisioned that guide slots 417 are shaped and sized to allow for roughly ninety degrees of rotation for burner arms 170.

[0052] FIG. 9 shows a cutaway perspective view of the planetary gear system 410 in conjunction with a respective burner arm 170. Like sun gear 415, planetary gear(s) 420 include a plurality of teeth 421 protruding around an outer circumference. Each planetary gear 420 is coupled to a shaft 422 using standard fasteners. In the example construction, each respective planetary gear 420 is coupled adjacent to a lower end 423 of shaft 422. A fastener is used to couple a respective burner arm 170 to an upper end 424 of shaft 422 such that a rotation of the planetary gear 420 correlates to a rotation of the burner arm 170. In the example shown, upper end 424 of shaft 422 is enclosed within the cavity of each burner arm. A spring may be provided along shaft 422 to keep each respective burner arm level with one another. Additionally, the region surrounding shaft 422 is open to allow the flow of gas and air mixture within the burner arm cavity. For the example in the figures, the planetary gears 420 can include a primary planetary gear 420’ and secondary planetary gears 420. The primary planetary gear 420’ may drive the gear system 410. More specifically, primary planetary gear 420’ is coupled to sun gear 415, which is in turn coupled to secondary planetary gears 420. While one example planetary gear train is shown and described, other gear train configurations are possible.

[0053] In FIGS. 8 and 10, the sun gear 415 is shown mounted to an upper surface of carrier 425. Carrier 425 is generally circular or ring-shaped, having a flat upper surface and a flat lower surface. In the example construction, a portion of carrier 425A is shaped to accommodate additional components of the burner system 100. Carrier portion 425A may have a larger radius compared to the remainder of the carrier 425. In various examples, carrier portion 425A is shaped to allow carrier 425 a small degree of rotation within the planetary gear system 410. The upper surface of carrier can include one or more guideposts or pins 426 extending therefrom. Generally, pins 426 are disposed in an expected location beneath guide slots 417 of sun gear 415. As shown in FIG. 10, pins 426 may be sized and shaped to mesh smoothly with slots 417. In a non-limiting example, three pins 426 are used and an upper surface of the pins extend coplanar with an upper surface of sun gear 415. However, other configurations are possible.

[0054] The motion and control assembly 400 additionally includes a motor assembly 430. Referring to figures 8 and 9, the motor assembly is shown coupled to primary planetary gear 420.’ Motor assembly 430 can include a motor 435 and a driving gear shaft 440. In the example shown, motor 435 is coupled to the primary planetary gear 420’ by way of driving gear shaft 440. Motor 435 may be coupled to an electrical power source and is additionally coupled to a controller 450. In various constructions, motor 435 may be, for example, a direct current (DC) motor or synchronized motor. Other electrical motors are possible. In at least one example, the motor 435 may include a potentiometer to vary the voltage supplied to motor and thus controlling an output speed driving gear shaft 440. The controller 450 may be used to control a speed of the motor 435. Referring to FIG. 10, an upper end of driving gear shaft 440 can include one or more pegs or pins 445 to rotationally fix gear shaft 440 to the primary planetary gear 420.’ In the figures, three pins 445 are shown extending into a lower surface of primary planetary gear 420’. While pins are used to fasten driving gear shaft 440 to the primary planetary gear 420;’ other fasteners may be used.

[0055] Turning to FIG. 11, an example controller 450 is shown. In the figures, controller 450 includes a knob assembly 455, which may be coupled to motor assembly 430 to control the burner system 100. Knob assembly 455 can include a rotatable knob 460 and a rotatable knob bezel 465. In various examples, knob assembly 455 may operate like a conventional knob-controlled gas burner system. For example, a user may push or press the knob 460 to activate igniter 160. Rotating the knob 460 in a first direction may increase the flow of gas and air mixture thus increasing the size of flame produced by the burner. Conversely, rotating the knob 460 in a second direction (opposite the first direction) decreases the flow of gas and air mixture. Moreover, a user can use the knob 460 to control and / or adjust the size of the flame produced by the burner system 100. The knob bezel 465 can be used to control the size of the heat zone desired. For example, rotating knob bezel 465 in a first direction can actuate the burner arms 170 to expand. A rotation in a second direction, opposite the first direction, can actuate the burner arms 170 to retract.

[0056] While the controller 450 is shown and described as a knob assembly, other methods of controlling the burner system 100 are possible. A momentary switch can be used to control the system. In another example, a touch screen display can be used to control actuation of the burner system 100.

[0057] One or more of the disclosed embodiments, alone or in combination, may provide one or more technical effects including providing a means to increase or decrease the size and / or intensity of, or change the shape of, a heating zone of a gas burner system. The technical effects and technical problems in the specification are exemplary and are not limiting. It should be noted that the embodiments described in the specification may have other technical effects and can solve other technical problems.

[0058] As utilized herein, the terms “approximately,” “about,” “substantially,” and similar terms are intended to have a broad meaning in harmony with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. It should be understood by those of skill in the art who review this disclosure that these terms are intended to allow a description of certain features described and claimed without restricting the scope of these features to the precise characteristics provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or alterations of the subject matter described and claimed are considered to be within the scope of the invention as recited in the appended claims.

[0059] It should be noted that references to relative positions (e.g., “top” and “bottom,” “upper” and “lower,” “left” and “right,” “front” and “back,” “in” and “out”) in this description are merely used to identify various elements as are oriented in the Figures. It should be recognized that the orientation of particular components may vary greatly depending on the application in which they are used.

[0060] For the purpose of this disclosure, the term “coupled” means the joining of two members directly or indirectly to one another. Such joining may be stationary in nature or moveable in nature. Such joining may be achieved with the two members or the two members and any additional intermediate members being integrally formed as a single unitary body with one another or with the two members or the two members and any additional intermediate members being attached to one another. Such joining may be permanent in nature or may be removable or releasable in nature.

[0061] The terms “fixedly,” “non-fixedly,” and “removably,” and variations thereof, may be used herein. The term “fix,” and variations thereof, refer to making firm, stable, or stationary. It should be understood, though, that fixed doesn’t necessarily mean permanent - rather, only that a significant or abnormal amount of work needs to be used to make unfixed. The term “removably,” and variations thereof, refer to readily changing the location, position, or station. Removably is meant to be the antonym of fixedly herein. Alternatively, the term “non-fixedly” can be used to be the antonym of fixedly.

[0062] The terms “a” and “an,” as used herein, are defined as one or more than one. The term “plurality,” as used herein, is defined as two or more than two. The term “another,” as used herein, is defined as at least a second or more. The terms “including” and / or “having,” as used herein, are defined as comprising (e.g., open language). The phrase “at least one of... and ....” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. As an example, the phrase “at least one of A, B, and C” includes A only, B only, C only, or any combination thereof (e.g. AB, AC, BC, or ABC).

[0063] It is also important to note that the construction and arrangement of the system, methods, and devices as shown in the various examples of embodiments is illustrative only, and not limiting. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many various alternatives, modifications, variations, improvements and / or substantial equivalents, whether known or that are or may be presently foreseen, are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts or elements show as multiple parts may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length or width of the structures and / or members or connector or other elements of the system may be varied, the nature or number of adjustment positions provided between the elements may be varied (e.g. by variations in the number of engagement slots or size of the engagement slots or type of engagement). The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the various examples of embodiments without departing from the spirit or scope of the present inventions. Therefore, the invention is intended to embrace all known or earlier developed alternatives, modifications, variations, improvements and / or substantial equivalents.

Claims

1. A gas burner system comprising:a burner assembly including:an ignition system; andan adjustable burner arm;a motion assembly including:a gear system coupled to the adjustable burner arm; anda motor coupled to the gear system; anda controller for controlling the burner assembly and the motion assembly.

2. The gas burner system of claim 1, wherein the burner assembly includes a center burner.

3. The gas burner system of claim 2, wherein a surface of the adjustable burner arm is shaped to match a profile of the center burner.

4. The gas burner system of claim 1, wherein the controller includes a knob assembly.

5. The gas burner system of claim 1, wherein the adjustable burner arm is moveable between a first position and a second position and the adjustable burner arm is adjustable to a location between the first position and the second position.

6. The gas burner system of claim 1, wherein the adjustable burner arm comprises a stationary end and a free end, and the gear system rotates the adjustable burner arm about an axis adjacent the stationary end.

7. The gas burner system of claim 5, wherein the adjustable burner arm rotates about a 90-degree range between the first position and the second position.

8. The gas burner system of claim 5, wherein the first position is a retracted position and the second position is an expanded position, and the gas burner system is configured to ignite the adjustable burner arm in either the retracted position or the expanded position.

9. The gas burner system of claim 1, wherein the adjustable burner arm is a first adjustable burner arm, and the burner assembly further includes a second, third, and fourth respective adjustable burner arm and the gear system is coupled to the second, third, and fourth respective adjustable burner arm.

10. The gas burner system of claim 9, wherein the gear system is a planetary gear system having a first planetary gear coupled to the first adjustable burner arm, a second planetary gear coupled to the second adjustable burner arm, a third planetary gear coupled to the third adjustable burner arm, a fourth planetary gear coupled to the fourth adjustable burner arm, and a sun gear coupling the first, second, third, and fourth respective planetary gears.

11. The gas burner system of claim 10, wherein the motor is coupled to the first planetary gear, and a rotation of the first planetary gear causes the sun gear rotate and a rotation of the sun gear causes respective second, third, and fourth planetary gears to rotate.

12. The gas burner system of claim 10, wherein the gear system further includes a carrier having a guide pin, and the carrier is configured to limit rotation of the gear system between a first position and a second position.

13. The gas burner system of claim 12, wherein the sun gear comprises a guide slot configured to receive the guide pin, and wherein rotation of the sun gear is at least limited by an interaction between the guide pin and the guide slot.

14. The gas burner system of claim 13, wherein a movement of the guide pin between a first end of the guide slot to a second end of the guide slot causes the first, second, third, and fourth respective adjustable burner arms to move between the first position and the second position.

15. The gas burner system of claim 1, wherein the motor is a DC motor or a synchronous motor.

16. A cooking appliance having the gas burner system of claim 1.

17. A gas burner system comprising:an ignition system;a primary adjustable burner arm;a secondary adjustable burner arm; anda motor coupled to the primary adjustable burner arm, the motor configured to control the primary adjustable burner arm and the primary adjustable burner arm configured to control the secondary adjustable burner arm.

18. The gas burner system of claim 17, wherein the primary adjustable burner arm and the secondary adjustable burner arm are adjustable within a range between a first position and a second position.

19. The gas burner system of claim 18, wherein the first position is a retracted position and the second position is an expanded position, and the gas burner system produces a smaller heat zone in the retracted position and a larger heat zone in the expanded position.

20. The gas burner system of claim 17, wherein the primary adjustable burner arm and the secondary adjustable burner arm include a respective free end and a respective stationary end, and the primary adjustable burner arm and the secondary adjustable burner arm are moveable about the respective stationary end.

21. The gas burner system of claim 17, further including a gear system coupling the primary adjustable burner arm to the secondary adjustable burner arm.

22. The gas burner system of claim 21, wherein the gear system is a planetary gear system comprising a sun gear, a first planetary gear and a second planetary gear, and wherein a first planetary gear is coupled to the primary adjustable burner arm and a second planetary gear is coupled to the secondary adjustable burner arm, and the sun gear is coupled to the first planetary gear and the second planetary gear.

23. The gas burner system of claim 17, further including a stationary burner.

24. The gas burner system of claim 23, wherein the primary and secondary adjustable burner arms are coplanar to one another, and the stationary burner is coplanar to the primary and secondary adjustable burner arms.

25. The gas burner system of claim 23, wherein the primary and secondary adjustable burner arms are coplanar to one another in a first plane, and the stationary burner is provided in a second plane parallel to the first plane.

26. The gas burner system of claim 25, wherein the gas burner system is moveable in the first plane and non-moveable in the second plane.

27. The gas burner system of claim 17, further including a controller to operate the primary adjustable burner arm and the secondary adjustable burner arm.

28. The gas burner system of claim 27, wherein the controller includes a knob assembly comprising:a knob configured to control the ignition system and a flow of gas and air mixture of the gas burner system; anda knob bezel configured to control the motor.

29. The gas burner system of claim 28, wherein a rotation of the knob bezel in a first direction causes the primary adjustable burner arm to rotate in the respective first direction, and wherein a rotation of the knob bezel in a second direction causes the primary adjustable burner arm to rotate in the respective second direction.

30. A cooking appliance having the gas burner system of claim 17.

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