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WO2023192619A2 - Systèmes et procédés de mélange d'air pour un dispositif d'incendie - Google Patents

Systèmes et procédés de mélange d'air pour un dispositif d'incendie Download PDF

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Publication number
WO2023192619A2
WO2023192619A2 PCT/US2023/017159 US2023017159W WO2023192619A2 WO 2023192619 A2 WO2023192619 A2 WO 2023192619A2 US 2023017159 W US2023017159 W US 2023017159W WO 2023192619 A2 WO2023192619 A2 WO 2023192619A2
Authority
WO
WIPO (PCT)
Prior art keywords
fire
sleeve
fire device
burner
air intake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2023/017159
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English (en)
Other versions
WO2023192619A3 (fr
Inventor
Trent FARRER
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2023192619A2 publication Critical patent/WO2023192619A2/fr
Publication of WO2023192619A3 publication Critical patent/WO2023192619A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/06—Construction of valves or dampers for controlling air supply or draught slidable only

Definitions

  • the present description relates generally to air mixing systems and methods for a fire device, such as a fire pit.
  • An air-fuel ratio impacts the type of flames produced when burning fuel.
  • fuel such as propane or natural gas
  • blue flames are produced from conditions in which substantially complete combustion occurs.
  • Yellow, orange, and red flames are brighter in appearance and cooler in temperature than blue flames.
  • Such yellow, orange, and red flames result from combustion that is less complete than in blue flame combustion.
  • a fire device may be used for various purposes including lighting and heating.
  • the inventor has recognized that when the fire device is used to provide lighting as a priority, yellow, orange, and red flames are preferred to blue flames.
  • blue flames are preferable as blue flames are hotter and burn cleaner.
  • items may be heated more quickly while avoiding soot deposition.
  • the inventor has developed air mixing systems and methods for a fire device to allow the AFR to be adjusted in a manner that is simple and compact to switch between lighting modes and heating modes of the fire device.
  • the approach developed by the inventor includes an in-line air mixing device coupled in a fuel line of the fire device.
  • the in-line air mixing device comprises a sleeve that circumferentially surrounds a portion of a burner fuel line of the fire device, where the burner fuel line comprises an air intake orifice formed therein.
  • the sleeve is configured as a movable sleeve to adjust an amount of the air intake orifice exposed. In this way, the AFR may be adjusted to suit a particular operational mode of the fire device in a manner that is compact.
  • FIG. 1 shows an example of an environment in which a network of fire devices may be located and operated, the network of fire device including at least one fire device comprising an air mixing system according to one or more examples of the present disclosure.
  • FIG. 2 shows an example fire device, according to one or more examples of the present disclosure.
  • FIG. 3 shows an example cook top, according to one or more examples of the present disclosure.
  • FIG. 4 shows air mixing system components, according to one or more examples of the present disclosure.
  • FIG. 5 shows an isometric view of a fire device in combination with a lid, according to one or more examples of the present disclosure.
  • FIG. 6 shows an isometric view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 7 shows a top view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 8 shows a right side view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 9 shows a back view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 10 shows a left side view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 11 shows a front view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 12 shows a bottom view of the fire device, according to one or more examples of the present disclosure.
  • FIG. 13 shows a view of the fire device without the housing, according to one or more examples of the present disclosure.
  • FIG. 14A shows a close-up view of the fire device without the housing with the air mixing sleeve in a first position, according one or more examples of the present disclosure.
  • FIG. 14B shows a close-up view of the fire device without the housing with the air mixing sleeve in a second position, according to one or more examples of the present disclosure.
  • FIG. 15 shows another embodiment for the front of the fire device, according to one or more examples of the present disclosure.
  • FIG. 16A shows a close-up view of the other embodiment for the fire device without the housing with the air mixing sleeve in a first position, according to one or more examples of the present disclosure.
  • FIG. 16B shows a close-up view of the other embodiment for the fire device without the housing with the air mixing sleeve in a second position, according to one or more examples of the present disclosure.
  • the following description relates to air mixing systems and methods for a fire device, such as the example fire devices shown at FIG. 2 and FIGS. 5-16B, to transition between lighting mode and heating mode AFRs.
  • the fire device may be part of an outdoor or indoor environment comprising multiple fire devices, such as shown in FIG. 1.
  • Transitioning between the lighting mode and heating mode AFRs includes adjusting a position of a sleeve that partially surrounds a burner fuel line, where an air intake orifice is formed into the burner fuel line, as shown at FIGS. 14A-14B and FIGS. 16A-16B. By adjusting the position of the sleeve, an amount of the air intake orifice exposed is adjusted. This in turn adjusts the resulting APR.
  • the sleeve may be adjusted to substantially block the air intake orifice.
  • the sleeve may be adjusted to substantially (including completely) expose the air intake orifice.
  • FIG. 1 shows a system environment 100, according to one or more examples of the present disclosure.
  • the system environment 100 is shown in a large warehouse space in the present disclosure. In other examples, however, the system environment 100 may instead be an outdoor environment, such as a backyard.
  • the system environment 100 comprises fire display devices including a plurality of torches 102a, 102b, 102c, 102d (also referred to as torches 102). Though there are four torches shown in the example at FIG. 1, it is noted that additional torches or fewer torches may be included in the system without departing from the scope of the disclosure.
  • the system environment 100 comprises additional fire devices including a first fire pit 104a, a second fire pit 104b, and a third fire pit 104c (also referred to as fire pits 104).
  • additional fire pits or fewer fire pits included in the system in at least one example.
  • the torches 102 and the fire pits 104 together may form a fire display 101.
  • Each fire pit 104 and torch 102 may include a fire device controller, wireless receiver, input panel, and a battery as discussed further below with respect to FIG. 2A.
  • the fire device controller and/or wireless receiver may receive signals from a hub 110.
  • the hub 110 is a controller that comprises a processor with instructions stored in non-transitory memory that, when executed, sends control signals to control one or more of the torches 102 and the fire pits 104.
  • the control signals sent from the hub 110 may be received at fire device controllers and audio inputs of the respective torches 102 and fire pits 104.
  • Each of the torches 102 and fire pits 104 additionally comprises an ignitor and at least one electric valve positioned therein that is configured to adjust an amount of fuel provided for ignition of the respective torch or fire pit.
  • the torches 102 and fire pits 104 may then actuate at least one of the electric valve and the ignitor of the respective torch 102 and fire pit 104. Via such actuation, a flame size and height may be controlled for the torches 102 and fire pits 104.
  • the control signals are sent from the hub 110 to one or more of the torches 102 in response to the processor of the hub 110 receiving input signals.
  • the control signals may further be sent from the hub 110 to one or more of the fire pits 104 responsive to such input signals.
  • the processor of the hub 110 receives input signals via one or more of a wireless receiver of the hub 110, a hardwired connection of the hub 110, and a user interface integrated into the hub 110 itself, where the user interface comprises one or more user input devices (e.g., buttons, dials, a touch screen) to receive the input signal.
  • the hub 110 may be a mobile device of a user, such as a cellular telephone or a laptop of the user.
  • an application of the mobile device may be used to control the torches 102 and fire pits 104. That is, when the hub 110 is a mobile device, an application of the mobile device may provide a display via the mobile device and receive input signals via a user interface of the mobile device (e.g., buttons, a touch screen).
  • the input signals received at the hub 110 may include a mode selection received at the hub 110. Additionally or alternatively, a mode election may be received at the input panels of the respective torches 102 and fire pits 204. For example, the mode selection may include selection of a traditional mode or an audio mode.
  • the torches 102 and fire pits 104 are operated with their respective electric valves maintained at a predetermined base position. At the predetermined base position, the electric valves of the torches 102 and the fire pits 104 are at least partially open and allow fuel to flow to their respective burners. If the electric valve of any of the torches 102 and fire pits 104 being controlled in the traditional mode is not at the base position when the traditional mode is selected, then the electric valve is first adjusted to the predetermined base position and maintained in the base position for a duration of the traditional mode. Due to the maintained position of the electric valve, a steady flame size and height is maintained in the traditional mode.
  • the torches 102 and fire pits 104 are operated with their respective electric valves being varied in coordination to an audio input, such as music.
  • the hub 110 may send control signals to the audio input devices of torches 102 and fire pits 104 based on the audio input.
  • the hub 110 may send control signals to adjust respective electric valves of the torches 102 and the fire pits 104 in coordination with the audio input.
  • the audio input may be received at each fire display device.
  • the audio input may be received at the hub 110 via wirelessly streaming the audio input to the hub 110 via a mobile device or other personal computing device.
  • a wireless receiver of the hub 110 may receive the audio input.
  • the audio input may be stored at and/or wireless streamed by the mobile device and accessed by the application.
  • the audio input may be received at the hub 110 via an aux input or other wired audio input.
  • a mobile device or other personal computing device may provide the audio input to the hub 110 via such an aux input or other wired audio input.
  • the electric valve may be adjusted to positions more open than the base position of the traditional mode while in the audio mode, based on the audio input. Additionally, the electric valve may be adjusted to positions that are less open than the base position of the traditional mode while in the audio mode, based on the audio input. In this way, flame bursts and decreases in flame size may be created for the fire display. Thus, in contrast to the traditional mode, the torches 102 and fire pits 104 produce flame sizes and heights that are varied throughout the audio mode in coordination with the audio input.
  • Both the traditional and the audio modes are lighting modes in which the fire devices are operated with an AFR to primarily produce yellow, orange, and red flames.
  • the fire devices operated in a lighting mode (such as the traditional mode or audio mode) produce flames that are highly visible compared to AFRs that would primarily produce blue flames.
  • a fire device e.g., one of the fire pits 104 may be operated at an AFR to primarily produce yellow, orange, and red flames by positioning a sleeve of the inline air mixing system coupled to a fuel line of the fire device to a first position. Further details as to the in-line air mixing system are provided herein below.
  • the fire devices may further be operated in a heating mode, such as a traditional heating mode or a flame boost mode.
  • a heating mode such as a traditional heating mode or a flame boost mode.
  • the user may select a traditional heating mode setting and adjust the manual valve of the fire device to position that is less than a wide open position.
  • the electric valve of the fire device may be adjusted to a predetermined position for the traditional heating mode.
  • the in-line air mixing system may include manually positioning the sleeve to a second position to operate the fire device in the traditional heating mode.
  • the in-line air mixing device coupled to the fuel line of the fire device may be electrically actuated to the second position.
  • the in-line air mixing device When the in-line air mixing device is in the second position, the resulting AFR is higher compared to the first position, and blue flames are primarily produced as a result. Such blue flames are higher in temperature and have a cleaner burn compared to yellow, orange, and red flames.
  • the fire device may automatically be operated in the heating mode responsive to detection of a cook top being positioned on the fire device.
  • the fire device may comprise sensors, such as magnetic, light, RF, or mass sensors
  • the sleeve of the in-line air mixing system may be electrically adjusted to a second position, where the second position results in an AFR that primarily produces blue flames.
  • the flame boost mode a maximum fuel flow is provided to a burner.
  • the flame boost mode may be used for purposes of quickly heating an accessory, such as a cook top griddle or grill attachment.
  • the flame boost mode may also be used for purposes of producing a maximum flame height and size, which may be of interest for lighting or theatrical effect, for example.
  • the respective electric valve of the torches 102 or fire pits 104 is actuated to a wide open position.
  • the flame boost mode may further require a mechanical valve providing fuel to the burner to be manually adjusted to a wide open position, in addition to the electric valve being adjusted to the wide open position.
  • the in-line air mixing system may be manually adjusted to position the sleeve to the second position in the flame boost mode.
  • the in-line air mixing device coupled to the fuel line of the fire device may be electrically actuated to the second position.
  • the flame boost mode it is noted that the wide open position of the electric valve is more open than the base position for the traditional mode.
  • hub 110 allows for there to be separate control of the torches 102 and the fire pits 104.
  • the mode selections for each of the fire pits 104 and the torches 102 may be made individually set.
  • each of the torches 102 and each of the fire pits 104 is able to have its own mode selected and individually controlled via the hub 110 and/or via the user input panel at each of the torches 102 and fire pits 104.
  • a mode selected at the input panel may take priority to a mode selected at the hub.
  • the hub 110 receives a request to operate the torches 102 and fire pits 104 in an audio mode but the user input panel of one of the fire pits 104 is set to the traditional mode, then the fire pit set to the traditional mode will be operated in the traditional mode even though the hub 110 is outputting an audio mode control signal. This allows for local control at the input panel of the torches 102 and the fire pits 104 to take priority for a particular torch or fire pit.
  • the hub 110 may control the torches 102 and the fire pits 104 collectively.
  • the hub 110 may control the torches 102 and the fire pits 104 all together to be in the same mode.
  • selection of the traditional mode may result in all of the torches 102 and the fire pits 104 being set to the traditional mode.
  • selection of the audio mode may result in all of the torches 102 and the fire pits 104 being set to the audio mode.
  • selection of the flame boost mode in the collective control examples, selection of the flame boost mode may result in all of the torches 102 and the fire pits 104 being controlled to have their respective electric valves in a wide open position.
  • the hub 110 may additionally or alternatively control the torches 102 and fire pits 104 in sub-groups.
  • sub-groups of the torches 102 and/or the fire pits 104 may be formed for control of the sub-group to be the same.
  • the hub 110 may control the torches 102 together as an all torches sub-group and may control the fire pits 104 together as an all fire pits sub-group.
  • the mode for the all torches sub-group being selected as the traditional mode would result in the torches 102 all being set to the traditional mode.
  • the mode for the all torches sub-group being selected as the audio mode would result in the torches 102 all being set to the audio mode.
  • the mode for the all fire pits sub-group being selected as the traditional mode would result in the fire pits 104 all being set to the traditional mode.
  • the mode for the all fire pits sub-group being selected as the audio mode would result in the fire pits 104 all being set to the audio mode.
  • the hub 110 may control a portion of the torches 102 as a first torch sub-group, another portion of the torches 102 as second torch subgroup, a portion of the fire pits 104 as a first fire pit sub-group, and another portion of the fire pits 104 as a second fire pit sub-group.
  • a sub-group may contain both torches 102 and fire pits 104, in at least one example.
  • the hub 110 may further send a control signal to activate respective ignitors of such torches and fire pits.
  • FIG. 2 an example fire device 200 is depicted in FIG. 2.
  • a set of reference axes 201 are provided for comparison between views shown, indicating a y-axis, an x-axis, and a z-axis.
  • the y-axis may be parallel with a direction of gravity and the x-z plane may be parallel with a horizontal plane.
  • the fire device 200 may be shaped as a cube, having a square outer geometry along each of the y-z, y-x, and x-z planes. It will be appreciated, however, that the fire device 200 is a non-limiting example, and variations in the shape, size, appearance, outer texture, etc., are possible, as described further below.
  • the fire device 200 includes an outer housing element 202 (hereafter, outer housing 202) which may be a shell or skin that encloses various inner components of the fire device 200.
  • the outer housing 202 may be a single, continuous unit, e.g., the four side panels 204 and the top panel 206 are continuous with one another.
  • the outer housing 202 may be coupled to and removed from the fire device 200 as one piece, e.g., such as a skin, where the outer housing 202 can be added to/removed from the fire device 200 by sliding the outer housing 202 down and over or up and away from the inner components of the fire device 200, respectively, in a single motion.
  • a frame of the housing may be collapsible in one or more examples. In this way, the fire pit may be easily transported.
  • each of the four side panels 204 and the top panel 206 may be separate, independent units that can be coupled to/removed from the fire device 200 individually.
  • the outer housing 202 may be coupled to and decoupled from, e.g., removably coupled, the fire device 200 by a user at a location of the fire device. Use of specialized equipment is thereby precluded to couple/decouple the outer housing 202.
  • the outer housing 202 may be fixedly coupled to the frame of the fire device 200, either as the single continuous unit or with the panels separate from one another, such that the outer housing 202 is not readily removed from the frame.
  • the outer housing 202 may be formed of a weather proof, lightweight, flame-proof, heat tolerant, metallic material or non-metallic material such as silicone or plastic, e.g., a heat tolerant plastic, that is resistant to scratching and tearing and may be molded into any desired shape.
  • the outer housing 202 may be configured as a flexible skin. In other examples, however, the outer housing 202 may be rigid.
  • the outer housing 202 may be decoupled from the fire device 200, and folded or stacked into a compact, portable configuration. In some examples, the outer housing 202 may be decoupled from the frame of the fire device 200.
  • the fire device 200 may also include a fire pan 208 and a base 210, the fire pan 208 and the base 210 arranged on opposite sides of the fire device 200.
  • the fire pan 208 may be positioned at a top 212 of the fire device 200 and the base 210 may be positioned at a bottom 214 of the fire device 200.
  • the base 210 may be a rectangular structure formed of molded plastic and may be an interfacing component between the fire device 200 and a ground surface. However, other geometries of the base 210, besides the rectangular structure, are possible.
  • the fire pan 208 may be arranged in an opening 216 of the top panel 206 of the outer housing 202 and may have a rectangular geometry, although other geometries are possible.
  • the fire pan 208 may be a metallic pan configured to hold or convey flames, e.g., an open fire. Though covered by rock in FIG. 2, the fire pan 208 supporting perforated tubes or injection ports coupled to tubes of a burner for the fire device 200.
  • the perforated tubes or injection ports coupled to tubes of the burner have fuel flowed therethrough for ignition.
  • An example where the burner comprises injection ports coupled to tubes of a burner are illustrated at FIG. 3.
  • the fire device 200 further comprises a user input panel 220 comprising a first user input device 222, a second user input device 223, and a third user input device 224.
  • the first user input device 222, the second user input device 223, and the third user input device 224 may be configured receive user inputs to select one of the lighting modes or heating modes discussed herein.
  • the first user input device may provide electrical inputs to a controller of the fire device 200.
  • the second user input device 223 may enable mechanical adjustment of a mechanical fuel valve for the fire device.
  • the third user input device 224 may receive a user input to mechanically adjust a sleeve of the air mixing system, in at least one example.
  • the fire device 200 may comprise sensors 228 to detect whether or not a cook top has been placed on a top surface of the fire device 200, in at least one example.
  • the fire device 200 may automatically electrically actuate the sleeve of the airmixing system to a position to provide an AFR that results in blue flame production. This may be the second position of the sleeve, in at least one example.
  • the fire device 200 may further be coupled to a fuel source 226, where the fuel source 226 comprises gaseous fuel.
  • the gaseous fuel may be propane or natural gas, for example.
  • the fuel source 226 is shown external to the outer housing 202. However, it is noted that the fuel source may be positioned within the outer housing 202 in one or more examples. It is noted that the fuel source 226, sensors 228, and user input panel 220 are shown schematically.
  • FIG. 3 shows an example cook top 300 may be added to the modular heating device, over the burner.
  • the cook top 300 may have a planar base 302, e.g., co-planar with the x-z plane, with a circular outer geometry and a diameter 304 that is smaller than a length or width of the fire pan of the modular heating device (depending on which dimension is smaller).
  • the planar base 302 includes a grille 306 surrounded by a rim 308, together forming a continuous unit which may be formed of a high temperature-tolerant metal.
  • the cook top 300 has legs 310 attached to the rim 308 of the planar base 302 and extending downwards (along the y-axis) away from the planar base 302. Although the cook top 300 is depicted with four of the legs 310 in FIG. 3, other examples of the cook top 300 may include different quantities of the legs 310, as well as variations in geometry. For example, the cook top 300 may be square, rectangular, oval, hexagonal, etc., and have three, five, or six legs.
  • the legs 310 may include bent portions 312 that bend away from a central axis 301 of the cook top 300, the central axis 301 parallel with the y-axis, forming a lower portion 316 of the legs 310 that extend along the y-axis offset from an upper portion 314 of the legs 310.
  • Bent portions 312 of the legs 310 allow the legs to interface with the overhang of the fire pan, e.g., the overhang 218 of FIG. 2.
  • a horizontal segment 315 of the bent portions 312 of the legs 310 may be in face-sharing contact with an upper surface of the overhang of the fire pan and lower portion 316 of the legs 310 may extend downwards from the overhang along the side panels of the outer housing of the modular heating device.
  • the lower portion 316 of the legs 310 may be in contact with the side panels or spaced away from the side panels. The downwards extension of the side panels maintains a position of the cook top 300 securely in place while allowing the cook top 300 to be easily mounted and removed without force.
  • the cook top 300 may be placed over the fire pan, allowing food to be cooked over the fire pan without directly contacting the heating elements of the fire pan. When cooking is not desired, the cook top 300 may be readily removed, even when hot.
  • the heating device may therefore operate as a cooking device, in addition to providing heating and a desired aesthetic to an environment.
  • the air mixing system components 400 include a sleeve 402 and a fuel line 404, where the fuel line 404 is connected to perforated tubes 404 of burner 406.
  • the fuel line 404 is connected to a base of the perforated tubes 404 of burner 406.
  • perforated tubes 404 of the burner 406 are in a cross configuration with the fuel line 404 extended from a center of the cross configuration at which the perforated tubes 404 meet. It is noted that the perforations in the tubes 404 are not visible in FIG. 4, as they are facing away from the view shown in FIG. 4.
  • the fuel line 404 comprises an air intake orifice 408 formed therein.
  • the air intake orifice 408 is formed in the fuel line 404 a predetermined distance upstream the base of the burner 406 to allow for sufficient mixing of air and fuel within the fuel line 404 upstream ignition at the burner 406 while still being compact.
  • the air intake orifice 408 is substantially circular in shape in the example shown at FIG. 4, though it is noted that other shapes are possible without departing from the scope of the disclosure. For example, rectangular, oval, trapezoidal, or irregular shapes are also possible. Moreover, it is also noted that a size of the air intake orifice 408 may be varied as needed to achieve desired AFRs.
  • the air intake orifice 408 may be increased in size relative to the example show in FIG. 4 if it is found an increased AFR is needed to produce blue flames when the air intake orifice 408 is exposed by the sleeve 402.
  • the fuel line 404 is connected to a fuel source when in an assembled state.
  • the sleeve 402 is positioned over the fuel line 402, coaxially with the air intake orifice 408 in the assembled state.
  • fuel is flowed through the fuel line 402 and to the burner 406, including perforated tubes 404.
  • the fuel flowed through the perforated tubes 404 is then burned.
  • the sleeve 402 can be moved into different positions to adjust an amount of the air intake orifice 408 exposed.
  • the sleeve 402 may have at least one opening formed into a sidewall and be rotated to adjust an amount of the air intake orifice 408 exposed.
  • a solid portion of the sleeve 402 may completely cover the air intake orifice 408, and in a second position at least part of an opening formed into the sleeve 402 may align with the air intake orifice 408 to substantially or completely expose the air intake orifice 408.
  • the air intake orifice 408 may have a filter 410 positioned therein.
  • a metal filter such as shown in FIG. 4 is possible.
  • Other mesh filters are also possible, so long as they allow sufficient air flow through the fuel line 404 an into the burner 406. The inclusion of a filter may help to prevent debris from getting into the fuel line 404.
  • FIG. 5 shows an exterior view of fire device 500 with a lid 502 positioned thereon, according to one or more examples of the present disclosure. It is noted that the lid 502 comprises handle openings 503 that are rounded and triangular in shape formed therein, though other shapes are possible.
  • FIGS. 6-15 show additional views of fire device 500, which are described in further detail hereinbelow. As with previously described figures a set of reference axes 201 are provided for comparison between the views shown.
  • the fire device 500 comprises a housing 504 that is substantially cuboid or rectangular in shape, though it is possible for a shape of the housing 504 to be a different shape such as a rounded shape, in one or more examples.
  • the housing 504 comprises a first side wall 506 and a second side wall 508 that meet at a substantially right angle.
  • the first side wall 506 comprises a handle opening 510 formed therein.
  • FIG. 6 shows an isometric view of the fire device 500 without the lid positioned thereon.
  • a top of the fire device 500 comprises a burner 602 that is positioned on top of a burner plate 603 recessed relative to an edge 601 of the housing.
  • the burner 602 includes a plurality of perforated tubes 604.
  • the perforated tubes 604 are elongate tubes in a cross configuration.
  • gaseous fuel is flowed through the perforated tubes 604, out of the openings 606 formed into the perforated tubes 604 and circular fuel injector 605, and ignited via pilot light 608.
  • FIG. 7 shows a top of the fire device 500.
  • the first side wall 506 is opposite a third side wall 702, and the second side wall 508 is opposite a fourth side wall 704.
  • the third side wall 702 meets the second side wall 508 and the third side wall 704 at substantially right angles, and the first side wall 506 also meets the second side wall 508 and the third side wall 704 are substantially right angles.
  • the fourth side wall 704 comprises a first user input device 706 and a second user input device 708.
  • the first user input device 706 may be configured to adjust a valve in a fuel line of the fire device 500, in one or more examples.
  • the second user input device 708 is configured to move a sleeve of the air mixing system between a first position for a lighting mode of operation of the fire device 500 and a second position for a heating mode of operation for the fire device 500.
  • brackets 710 and fasteners 712 coupled the perforated tubes 604, circular fuel injector 605, and pilot light 608 to the burner plate 603.
  • FIG. 8 shows a right side view of the fire device 500.
  • the side view in FIG. 8 shows the third side wall 702 and the handle opening 802 formed therein.
  • the first user input device 706 is a dial device. Furthermore, the view at FIG.
  • the second user input device 708, also referred to herein as the AFR input device comprises a ball 806 and stem 808 configuration.
  • the ball 806 may screw onto the stem 808, in at least one example.
  • the AFR input device 708 may be pushed towards a central axis 810 of the fire device 500 or pulled away from the central axis 810 to adjust a position of a sleeve of the air mixing system.
  • feet 804 of the fire device 500 can be seen in FIG. 8, where feet 804 may have a screw configuration such that the feet 804 are individually adjustable height- wise.
  • a portion of a first fuel tank 806 and a second fuel tank 808 are visible in FIG. 8.
  • FIG. 9 a back view of the fire device 500 is shown, where the second side wall 508, feet 804, and portions of the first fuel tank 806 and the second fuel tank 808 are visible in FIG. 9.
  • FIG. 10 shows a left side view of the fire device 500.
  • FIG. 11 shows a front view of the fire device 500.
  • FIG. 12 shows a bottom view of the fire device 500.
  • the bottom of the fire device 500 is open, allowing access to components.
  • the first fuel tank 806 and the second fuel tank 808 are able to be coupled and decoupled to mountings within the housing of the fire device 500.
  • FIG. 13 shows a view of the fire device without the housing 504 and without the lid 502.
  • the first fuel tank 806 is coupled to a first pressure regulator 1302 and the second fuel tank 808 is coupled to a second pressure regulator 1304.
  • the first fuel tank 806 and the second fuel tank 808 are removably coupled to mountings inside the fire device.
  • the first fuel tank 806 and the second fuel tank 808 may comprise threading for attaching and detaching the tanks to mountings within the fire device.
  • the first fuel tank 806 and the second fuel tank 808 are gaseous fuel tanks, and may hold propane or natural gas, for example.
  • the first pressure regulator 1302 and the second pressure regulator 1304 are coupled to a first fuel line 1306 and a second fuel line 1308, respectively.
  • the first fuel line 1306 and the second fuel line 1308 meet with a third fuel line 1310 at ajunction 1312 to form a substantially T-shaped configuration.
  • Such one or more hoses may be configured so that the first fuel tank 806 and the second fuel tank 808 are able to be removed from the housing of the fire device 500 and positioned outside of the housing during operation.
  • the first fuel tank 806 and the second fuel tank 808 may be contained within a housing of the fire device 500 during transportation (an in an example disconnected from the gas supply to the burner) and positioned externally to the housing during operation with connection to the burner via the hose, for example.
  • the fuel tanks may be only removably mounted inside the tank and without any gas connection while mounted inside for transport.
  • the third fuel line 1310 connects to a valve 1314, where the valve 1314 is controlled by the first user input device 706.
  • the first user input device may be mechanically coupled to the valve 1314 to enable the user to manually adjust an opening of the valve 1314.
  • the valve 1314 may be an electric valve that is electrically actuated responsive to an input received at the first user input device 706.
  • the first user input device 706 may further be electrically coupled to ignitor 1316 to provide a spark for igniting fuel supplied to pilot light line 1318. It is noted that the pilot light line 1318 is coupled downstream of the valve 1314.
  • a burner fuel line 1320 is also coupled downstream of the valve 1314, where the burner fuel line 1320 is coupled to the burner 602 of the fire device.
  • the burner fuel line 1320 extends from the valve 1314 to a base of the burner 602, and the burner fuel line 1320 is coupled to a circular fuel injector 605 at a center of the burner 602, where perforated tubes 604 are fludicially coupled to the burner fuel line 1320 via the circular fuel injector 605.
  • An in-line air mixing configuration 1322 is visible in FIG. 13, which includes a sleeve 1324 circumferentially surrounding a portion of the burner fuel line 1320. The sleeve 1324 is coupled to a stem 808 of the AFR input device 708.
  • the sleeve 1324 may be solid in one or more examples, without any openings formed into a sidewall of the sleeve 1324.
  • a position of the sleeve 1324 may be adjusted via the AFR input device 708 by translating the AFR input device 708 towards or away from the central axis 810 of the fire device along path 1326. It is noted that the path 1326 is a substantially linear path.
  • adjusting the position of the sleeve 1324 adjusts an amount of an air intake orifice formed into the burner fuel line 1320 that is exposed.
  • an amount of air introduced into the burner fuel line 1320 is changed, which in turn alters the AFR for ignition at the burner 602.
  • the sleeve 1324 is in a first position. In the first position, the sleeve 1324 circumferentially surrounds the burner fuel line 1320 where at least one air intake orifice (air intake orifice 1404 and air intake orifice 1406 shown in FIG. 14B) is formed.
  • the AFR input device 708 may be translated along a path 1326 towards the central axis 810 of the fire device 500.
  • the position of the sleeve 1324 may be manually adjusted by pushing the AFR input device 708 towards the central axis 810. Additionally or alternatively, a position of the sleeve 1324 may be adjusted via an electric actuator 1402 translating the sleeve 1324 along the path 1326. It is noted that electric actuator 1402 is shown schematically in FIGS. 14A-14B.
  • the sleeve 1324 may be moved from the first position at FIG. 14A to the second position at FIG. 14B.
  • the air intake orifice 1404 also referred to herein as a first air intake orifice
  • the air intake orifice 1406 also referred to herein as a second air intake orifice
  • an AFR is increased when the sleeve 1324 is in the second position compared to when the sleeve 1324 is in the first position.
  • the first air intake orifice 1404 and the second air intake orifice 1406 may be diametrically opposed from one another, in at least one example.
  • the first air intake orifice 1404 and the second air intake orifice 1406 may be substantially rectangular in shape, though other shapes are possible without departing from the scope of the present disclosure.
  • the first air intake orifice 1404 and the second air intake orifice 1406 may be approximately 7 mm to 12 mm in length and approximately 7 mm to 12 mm in width.
  • the first intake orifice 1404 and the second intake orifice 1406 may have filters positioned therein as shown in FIG. 14B to help prevent debris from entering the burner fuel line 1320.
  • the filter may comprise mesh, such as a metal mesh. It is noted that the second position at FIG. 14B with the higher AFR is to produce primarily blue flames at the burner. Thus, the sleeve 1324 is in the second position for a heating mode of the fire device. In contrast, when the sleeve 1324 is in the first position, the AFR is decreased compared to the sleeve 1324 being in the second position. Therefore, the sleeve 1324 is in the first position for a lighting mode of the fire device. It is noted that the sleeve 1324 may be move from the second position at FIG. 14B to the first position at FIG. 14A by translating the sleeve 1324 along the path 1326 away from the central axis 816.
  • FIG. 15 shows a fire device 1500 that is substantially similar to fire device 500 with a different configuration for the AFR input device 708. It is noted that any one or combination of features as described above in relation to fire device 500 apply to fire device 1500 and that shared elements are labeled similarly. For example, the views shown at FIGS. 5-10 for fire device 500 may be the same for fire device 1500.
  • the AFR input device 708 is supported in an arch-shaped slot 1502 formed into wall 1508 of the fire device 1500 and is moved along the arch-shaped slot 1502 adjust an AFR for the fire device 1500.
  • the AFR input device 708 is coupled to a sleeve (sleeve 1602 in FIG. 16A and FIG. 16B), where the sleeve is used to adjust the AFR.
  • the sleeve When the AFR input device 708 is positioned at a first end 1504 of the arch-shaped slot 1502, the sleeve may be in a first position as shown in FIG. 16A.
  • the AFR input device 708 is at a second end 1506 of the arch-shaped slot 1502, which is opposite the first end 1504 of the arch-shaped slot, the sleeve may be in a second position as shown in FIG. 16B.
  • the AFR input device 708 of fire device 1500 is coupled to a sleeve 1602 via stem 808, and the sleeve 1602 comprises at least one opening 1604 formed therein.
  • the sleeve 1602 circumferentially surrounds a portion of the burner fuel line 1320 of fire device 1500.
  • the sleeve 1602 is in the first position in FIG. 16A.
  • the sleeve 1602 covers an air intake orifice (air intake orifice 1606 shown in FIG. 16B) formed into the burner fuel line 1320 of fire device 1500 in the first position at FIG. 16 A.
  • the sleeve 1602 comprises at least one opening 1604 formed therein. Opening 1604 is substantially rectangular in shape in FIGS. 16A and 16B, though it is noted that alternative shapes are possible without departing from the scope of the disclosure.
  • the opening 1604 is not aligned with the air intake orifice formed into the burner fuel line 1320 (air intake orifice 1606 shown in FIG. 16B). Instead a solid portion of the sleeve 1604 is aligned with the air intake orifice (air intake orifice 1606) in FIG. 16A.
  • the sleeve 1602 may be rotated about the burner fuel line 1320 to at least partially align the opening 1604 with the air intake orifice (air intake orifice 1606 shown in FIG. 16B).
  • rotation of the sleeve 1602 may be carried out by moving the AFR input device 708 along an arched path 1608, following the arch-shaped slot 1502 of the fire device 1500 from the first end 1506 of the arch shaped slot 1502 to the second end 1504 of the arch-shaped slot 1502.
  • the AFR input device 1708 may be manually moved along the arched path 1608 following the arch-shaped slot 1502 to rotate the sleeve 1602 from the first position at FIG. 16A to a second position, as shown at FIG. 16B.
  • a position of the sleeve 1602 may be adjusted via an electric actuator 1402 configured to rotate the sleeve 1602 about the burner fuel line 1320. It is noted that electric actuator 1402 is shown schematically in FIGS. 16A-16B.
  • FIG. 16B shows the sleeve 1602 in the second position, such that the air intake orifice 1606 is substantially exposed, providing a higher AFR.
  • the air intake orifice 1606 is completely exposed.
  • the air intake orifice 1606 is substantially rectangular in shape, though other shapes are possible.
  • the air intake orifice 1606 may be approximately 20 mm to 40 mm in length and approximately 10 mm to 20 mm in width.
  • the air intake orifice 1606 includes a filter positioned therein to help prevent debris from entering the burner fuel line 1320. It is noted that the second position at FIG.
  • the sleeve 1602 is adjusted to the second position for a heating mode of the fire device.
  • the AFR is decreased compared to the sleeve 1602 being in the second position and produces primarily yellow, orange, and red flames. Therefore, the sleeve 1602 is adjusted to the first position for a lighting mode of the fire device.
  • the sleeve 1602 may be moved from the second position at FIG.
  • the sleeve 1602 may be rotated by moving the AFR input device 708 along the path 1608 via arch-shaped slot 1502, from the second end 1506 of the arched-shape slot 1502 to the first end 1504 of the archshaped slot 1506.
  • the sleeve may be a threaded sleeve that is screwed on and off to adjust exposure of the air intake orifice.
  • the sleeve may be a threaded sleeve that is screwed on and off to adjust exposure of the air intake orifice.
  • multiple sleeves adjusting the exposure of multiple orifices, in at least one example.
  • the sleeve is electrically actuated, it is noted that various options have been contemplated, such as an electric motor that drives the AFR input device examples disclosed herein or an actuator that directly connects to the sleeve to adjust the position of the sleeve.
  • FIGS. 2-16B show example configurations with relative positioning of the various components. If shown directly contacting each other, or directly coupled, then such elements may be referred to as directly contacting or directly coupled, respectively, at least in one example. Similarly, elements shown contiguous or adjacent to one another may be contiguous or adjacent to each other, respectively, at least in one example. As an example, components laying in face-sharing contact with each other may be referred to as in face-sharing contact. As another example, elements positioned apart from each other with only a space there-between and no other components may be referred to as such, in at least one example.
  • top/bottom, upper/lower, above/below may be relative to a vertical axis of the figures and used to describe positioning of elements of the figures relative to one another.
  • elements shown above other elements are positioned vertically above the other elements, in one example.
  • shapes of the elements depicted within the figures may be referred to as having those shapes (e.g., such as being circular, straight, planar, curved, rounded, chamfered, angled, or the like).
  • elements shown intersecting one another may be referred to as intersecting elements or intersecting one another, in at least one example.
  • an element shown within another element or shown outside of another element may be referred as such, in one example.
  • control and estimation routines included herein can be used with various system configurations.
  • the control methods and routines disclosed herein may be stored as executable instructions in non-transitory memory and may be carried out by the control system including the controller in combination with the various sensors, actuators, and other hardware.
  • the specific routines described herein may represent one or more of any number of processing strategies such as event-driven, interrupt-driven, multi-tasking, multithreading, and the like.
  • various actions, operations, and/or functions illustrated may be performed in the sequence illustrated, in parallel, or in some cases omitted.
  • the order of processing is not necessarily required to achieve the features and advantages of the example embodiments described herein, but is provided for ease of illustration and description.
  • One or more of the illustrated actions, operations, and/or functions may be repeatedly performed depending on the particular strategy being used. Further, the described actions, operations, and/or functions may graphically represent code to be programmed into non- transitory memory of the computer readable storage medium in the control system, where the described actions are carried out by executing the instructions in a system including the various hardware components in combination with the hub controller and/or the fire device controller. [0088] It will be appreciated that the configurations and routines disclosed herein are exemplary in nature, and that these specific embodiments are not to be considered in a limiting sense, because numerous variations are possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

Des procédés et des systèmes pour un dispositif d'incendie comprenant un brûleur, une conduite de combustible de brûleur conçue pour faire circuler du combustible vers le brûleur, un orifice d'admission d'air étant formé dans la conduite de combustible de brûleur, et un manchon entourant de manière circonférentielle une partie de la conduite de combustible de brûleur. Le manchon est configuré pour ajuster une taille de l'orifice d'admission d'air exposé.
PCT/US2023/017159 2022-03-31 2023-03-31 Systèmes et procédés de mélange d'air pour un dispositif d'incendie Ceased WO2023192619A2 (fr)

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US202263362318P 2022-03-31 2022-03-31
US63/362,318 2022-03-31

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WO2023192619A3 WO2023192619A3 (fr) 2023-11-09

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US8336534B2 (en) * 2008-03-06 2012-12-25 Andrew Irvin Adjustable gas grill burner and method of making and using the same
US9829195B2 (en) * 2009-12-14 2017-11-28 David Deng Dual fuel heating source with nozzle

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