EP2049837A2 - Étuve à propulsion dorsale - Google Patents

Étuve à propulsion dorsale

Info

Publication number
EP2049837A2
EP2049837A2 EP07813659A EP07813659A EP2049837A2 EP 2049837 A2 EP2049837 A2 EP 2049837A2 EP 07813659 A EP07813659 A EP 07813659A EP 07813659 A EP07813659 A EP 07813659A EP 2049837 A2 EP2049837 A2 EP 2049837A2
Authority
EP
European Patent Office
Prior art keywords
fuel
cleaning
heat dissipating
control lever
burning appliance
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.)
Withdrawn
Application number
EP07813659A
Other languages
German (de)
English (en)
Inventor
Norris Richard Long
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coleman Co Inc
Original Assignee
Coleman Co Inc
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 Coleman Co Inc filed Critical Coleman Co Inc
Publication of EP2049837A2 publication Critical patent/EP2049837A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges

Definitions

  • the present invention relates to fuel burning appliances, and more specifically to backpacking and camping stoves .
  • Liquid fuel which is often used in such camp stoves and lanterns, may be, for example, COLEMAN branded fuel, white gas, unleaded gasoline, or other liquid fuels.
  • the needle partly blocks the orifice during the lighting cycle and is removed to leave the orifice unblocked during the normal burn cycle.
  • This partial blockage during the lighting cycle causes air to be drawn down the space between the internal and outer conduits of the dip tube from an opening at the upper part of the pressure vessel.
  • a fuel-lean mixture of fuel and air is created to enhance lighting.
  • a fuel-lean mixture is needed at initial lighting, because the fuel in the mixture is not vaporized and thus must be mixed with a lot of air for combustion.
  • the air-fuel mixture then passes to a generator which is connected to the dip tube by the fuel control system.
  • the generator is a metal tube which passes above the burner of the stove into a venturi assembly which is connected to the burner.
  • the generator is heated by the flame of the burner when the burner is operating. Fuel is discharged at high velocity from an orifice or jet at the end of the generator into the venturi where air is aspirated and mixed and fed to the burner with the air/fuel mixture as a combustible mixture for burning.
  • a multi-fuel fuel burning appliance such as, but not limited to, a camping and backpacking stove, lantern, torch or other device having a fuel tip that can be cleaned while the device is still running. More preferably, such a stove should be designed so that the user can perform this function while the stove is operating and with a bare hand, i.e., without any special protective gear, such as gloves.
  • the control for such functionality should be a component of the stove and not a feature of the fuel tank or fuel supply line or fuel supply valves, but should not significantly increase the size or complexity of the stove. It is to the provision of such a multi-fuel stove that the present invention is primarily directed.
  • a burning appliance having a burner assembly including a burner for providing combustion and a fuel tip for supplying fuel to the burner.
  • a fuel control and cleaning assembly may cooperate with the fuel tip to permit control of fuel supplied to the burner and cleaning of the fuel tip while the stove is in operation.
  • a multi-fuel burning appliance capable of running on any one of a number of fuels.
  • the multi-fuel burning appliance includes a burner assembly having a burner for providing combustion and a fuel tip for supplying fuel to the burner.
  • a cleaning assembly is constructed and arranged on the burning appliance to control the amount of fuel supplied to the burner while at least partially cleaning the fuel tip during stove operation.
  • a cleaning assembly for a burning appliance is provided.
  • the cleaning assembly is preferably affixed to the burning appliance and may include a cleaning element, a cleaning element control mechanism and a heat dissipating interface positioned with respect to the cleaning element and the cleaning element control mechanism such that a user may control the cleaning element with the cleaning element control mechanism without the use of gloves or other protective gear while the appliance is in operation.
  • a method for controlling fuel supply through the fuel tip of a multi-fuel burning appliance while facilitating at least partial cleaning of the fuel tip while the burning appliance is in operation.
  • FIGURE 1 is a top perspective view of a stove together with a fuel tank in accordance with an embodiment
  • FIG. 2 is an exploded, top perspective view of some of the components of the stove depicted in FIG. 1 ;
  • FIG. 3A is an exploded side perspective view of the stove depicted in FIG. 1 ;
  • FIG. 3B is a side perspective view of the stove depicted FIG. 3A in an assembled expanded configuration
  • FIG. 3C is a side perspective view of the stove depicted in FIG. 3A in an assembled collapsed configuration
  • FIG. 4A is a side perspective view of the cleaning valve assembly of the stove depicted in FIG. 1;
  • FIG 4B is an end view of the cleaning valve assembly depicted in FIG 4A;
  • FIG. 4C is a cross-sectional view of the cleaning valve assembly of FIG. 4B taken along the section lines A - A of FIG. 4A;
  • FIG. 4D is a partial cross-sectional view of the cleaning valve assembly of FIG. 4C, showing the cleaning element and fuel tip cooperating to provide a low fuel flow state;
  • FIG. 4E is a partial cross-sectional view of the cleaning valve assembly of FIG. 4C showing the cleaning element and fuel tip cooperating to provide a high fuel flow state .
  • FIG. 1 An exemplary burning appliance of the present invention is shown in FIG. 1 as a backpacking stove and is designated generally throughout by reference numeral 20.
  • the stove 20 includes a burner assembly 22 connected by a fuel feed line 24 to a liquid fuel tank 26.
  • the liquid fuel feed line 24 connects to a generator 27, which in turn is connected to a valve assembly, preferably a cleaning valve assembly 28.
  • the generator 27 in a manner known in the art, winds around and over the burner assembly 22 so that it may be heated by a flame produced at the burner, preferably an impingement burner 30.
  • the generator 27 then extends downward to a bottom of the stove 20 and into one side of the cleaning valve assembly 28.
  • the generator 27 and/or portion of the cleaning valve assembly 28 must be pre-heated so that fuel supplied through the generator 27 to the cleaning valve assembly 28 will become hot enough to vaporize so that ignition and combustion can occur. As can be seen in
  • a burner support assembly 32 is positioned below the burner assembly 22, and supports the cleaning valve assembly 28 and a preheating pad 34 located beneath and around the cleaning valve assembly 28.
  • An exit orifice 36 of a fuel tip 38 is located at a top portion of the cleaning valve assembly 28 beneath burner 30 of burner assembly 22.
  • a "fuel tip" is the location where fuel leaves the fuel conduit and is released for combustion. In this embodiment, at the exit orifice 36.
  • the preheating pad 34 is preferably made of a high temperature ceramic material. Prior to lighting of the stove 20, the preheating pad 34 may be saturated with liquid fuel, alcohol or some other fuel source. This fuel source may be ignited and burned to create sufficient heat over several minutes in order to cause at least partial vaporization of the fuel in a portion of the cleaning valve assembly 28 and the generator 27. This vaporization aids in providing the proper fuel and air mixture, which may be discharged through the exit orifice 36, providing fuel for a flame in the burner assembly 22.
  • FIG. 3A an exploded perspective view of the stove 20 is depicted.
  • the burner assembly 22 including the burner 30 is affixed to the burner support assembly 32, preferably via a treaded connection on the top of the cleaning valve assembly 28 adjacent the fuel tip 38.
  • the burner support assembly 32 is preferably connected to a stove housing 40, to which a plurality of legs 42 are pivotally attached. As shown in FIG. 3C, the legs 42 are thus permitted to be rotated in and out of engagement with the housing 40 so that the stove may be compacted for ease of packing and or transport.
  • FIG. 3B depicts the stove 20 shown in FIG. 3A in an assembled configuration with the legs 42 extended
  • FIG. 3C depicts the stove 20 of FIG. 3A in a collapsed configuration with the legs 42 adjacent the housing 40.
  • the cleaning valve assembly 28 preferably includes a valve housing 44 to which the fuel tip 38 is attached. Positioned within the orifice 36 of the fuel tip 38 is a cleaning element, preferably a cleaning needle 46 (FIG. 4C) .
  • the needle 46 may be controlled by rotation of a control lever 48 (FIG. 2), which extends from the valve housing 44 to and out a remote lever housing 50. As shown in FIG. 4B, the lever 48 extends centrally through lever housing 50.
  • a novel heat dissipating element in the embodiment shown in the drawings, a heat dissipating interface 52 positioned between the valve housing 44 and lever housing 50.
  • the heat dissipating interface 52 is a tubular member made of a low heat conducting material such as, but not limited to, a ceramic material, titanium or preferably stainless steel.
  • lever 48 passes through lever housing 50 through heat dissipating interface 52 and into valve housing 44.
  • lever 48 preferably has a bent end 54 that cooperates with a cleaning needle housing 56 that houses the cleaning needle 46.
  • the cleaning needle preferably measures between .02 (two-hundredths) and .005 (five-thousandths) of an inch in diameter, and most preferably .009 (nine-thousandths) of an inch in diameter.
  • FIGS. 4D and 4E when the lever 48 is rotated, the bent end 54 of the lever 48 takes an eccentric path. During this path, the bent end 54 remains engaged with a notch in the cleaning needle housing 56, and the eccentric path works as a cam in connection with the cleaning needle housing 56 to elevate and lower the cleaning needle 46 within the orifice 36 of fuel tip 38.
  • the movement of the cleaning needle 46 within the orifice 36 has at least two functions. First, it cleans deposits from the walls of fuel tip 38 in orifice 36 that are left behind as a result of fuel passage and products of combustion. Second, and as shown clearly in FIGS. 4D and 4E, the cleaning needle 46 changes the amount of fuel flow (as well as other attributes) through orifice 36 as it moves into and out of orifice 36 depending upon the position of the lever 48.
  • the inside of the fuel tip 38 is preferably necked down and may incorporate one or more gaskets in order to reduce the volume of fuel that may pass through the orifice 36 as the cleaning needle 46 moves up into the fuel tip 38.
  • the optimum clearance between the cleaning needle and the walls of the fuel tip 38 should be at least about .002 (two-thousandths) of an inch.
  • the heat dissipating aspects of the present invention are preferably provided by the heat dissipating interface 52.
  • the entire length of the lever 48 is made from a low heat conducting material such as a ceramic material, titanium, stainless steel, or some combination thereof. The same may also be true for the cleaning needle 46.
  • the body of the stove 20 generally runs about 500 to 600 degrees F. If all of the above-mentioned components were made of high heat conducting materials such as brass, the temperature of the end of the lever would be very close to the temperature of the body of the stove 20.
  • the lever 48, the cleaning needle 46, and the heat dissipating interface 52 are all stainless steel and the length of heat dissipating interface 52 is approximately one and one-quarter inches long
  • the lever housing 50 is approximately two-hundred (200) degrees F and the end of the lever is approximately room temperature when the body of the stove 20 is between five-hundred (500) and six-hundred (600) degrees F and the stove is running.
  • One of ordinary skill in the art will recognize that not all of the above-mentioned elements need to be made of low heat conductive material in order to reduce the heat transfer to the end of lever 48.
  • the length of heat dissipating interface 52 should be at least one (1) cm in length, preferably one (1) inch in length, and most preferably, greater than one and one- quarter (1 1/4) inches in length. The increased length itself assists with dissipation as does the additional surface area exposed to ambient air around that surface area .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gas Burners (AREA)
  • Gloves (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

L'invention concerne un dispositif de combustion (20) comprenant un ensemble de brûleur (22) comprenant un brûleur (30) pour réaliser une combustion. Le dispositif (20) comporte une pointe d'alimentation en combustible (38) pour introduire un combustible dans l'ensemble de brûleur, et un ensemble de commande de combustible et de nettoyage (28) qui coopère avec la pointe d'alimentation en combustible pour permettre la commande du combustible introduit dans le brûleur (30) et pour nettoyer la pointe d'alimentation en combustible (38) pendant le fonctionnement du dispositif. L'ensemble de nettoyage (28) peut être formé sur le dispositif (30) lui-même et peut incorporer un élément de nettoyage (46), un mécanisme de commande d'élément de nettoyage (48) et une interface de dissipation de chaleur (52) positionnée par rapport à l'élément de nettoyage et au mécanisme de commande de l'élément de nettoyage de telle sorte qu'un utilisateur puisse commander l'élément de nettoyage à l'aide du mécanisme de commande de l'élément de nettoyage sans utiliser de gants ni aucun autre équipement de protection pendant le fonctionnement du dispositif (20).
EP07813659A 2006-08-04 2007-08-01 Étuve à propulsion dorsale Withdrawn EP2049837A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82152206P 2006-08-04 2006-08-04
PCT/US2007/074987 WO2008019273A2 (fr) 2006-08-04 2007-08-01 Étuve à propulsion dorsale

Publications (1)

Publication Number Publication Date
EP2049837A2 true EP2049837A2 (fr) 2009-04-22

Family

ID=39033571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07813659A Withdrawn EP2049837A2 (fr) 2006-08-04 2007-08-01 Étuve à propulsion dorsale

Country Status (6)

Country Link
US (1) US20090280447A1 (fr)
EP (1) EP2049837A2 (fr)
JP (1) JP2009545722A (fr)
AU (1) AU2007281757A1 (fr)
CA (1) CA2660205A1 (fr)
WO (1) WO2008019273A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103807889B (zh) * 2012-11-08 2016-03-23 拉瓦户外用品器材有限公司 支撑装置
US9383111B2 (en) * 2013-06-03 2016-07-05 Adam Royce Nelson, SR. Propane swivel burner
EP2942566A1 (fr) * 2014-05-05 2015-11-11 Fenix Outdoor AB Réchaud portable
USD793794S1 (en) 2015-06-04 2017-08-08 Johnson Outdoors Inc. Folding multi-burner stove
USD793796S1 (en) 2015-06-04 2017-08-08 Johnson Outdoors Inc. Multi-burner stove system
USD784064S1 (en) 2015-06-04 2017-04-18 Johnson Outdoors Inc. Portable stove
US10174950B2 (en) 2015-06-04 2019-01-08 Johnson Outdoors Inc. Portable stove with accessory port
USD843156S1 (en) 2017-04-04 2019-03-19 Johnson Outdoors Inc. Portable stove
USD911092S1 (en) * 2019-01-25 2021-02-23 Jianming Zhang Outdoor stove
EP3698687A1 (fr) * 2019-02-20 2020-08-26 Primus Ab Brûleur pliable
CN113280373B (zh) * 2020-11-04 2022-08-26 淄博银都伟业厨房设备有限公司 可避免喷油孔堵塞的炉排

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463101A (en) * 1922-05-01 1923-07-24 Straub Vapor burner
JPS4738529Y1 (fr) * 1969-04-01 1972-11-21
US3876364A (en) * 1973-07-12 1975-04-08 Dennis V Hefling Fuel control means for camp stoves
US4230446A (en) * 1978-06-05 1980-10-28 Acroform Corporation Camp lantern
JP2637859B2 (ja) * 1991-06-10 1997-08-06 シャープ株式会社 気化燃焼装置
US5417565A (en) * 1994-10-17 1995-05-23 The Coleman Company, Inc. Automatic instant lighting system for liquid fuel burner
JP3957282B2 (ja) * 2002-07-09 2007-08-15 興栄工業株式会社 携帯用燃焼装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008019273A3 *

Also Published As

Publication number Publication date
AU2007281757A1 (en) 2008-02-14
WO2008019273A2 (fr) 2008-02-14
WO2008019273A3 (fr) 2008-10-09
US20090280447A1 (en) 2009-11-12
CA2660205A1 (fr) 2008-02-14
JP2009545722A (ja) 2009-12-24

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