EP3730837B1 - Gasbrennerstab mit befestigung einer brennstoffeinspritzdüse - Google Patents

Gasbrennerstab mit befestigung einer brennstoffeinspritzdüse Download PDF

Info

Publication number
EP3730837B1
EP3730837B1 EP20170876.5A EP20170876A EP3730837B1 EP 3730837 B1 EP3730837 B1 EP 3730837B1 EP 20170876 A EP20170876 A EP 20170876A EP 3730837 B1 EP3730837 B1 EP 3730837B1
Authority
EP
European Patent Office
Prior art keywords
injector
burner
gas
bar
air shutter
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.)
Active
Application number
EP20170876.5A
Other languages
English (en)
French (fr)
Other versions
EP3730837A3 (de
EP3730837A2 (de
Inventor
Chris Corbin
Daniel Davison
Timothy Russell
Brian Silva
Tyson White
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3730837A2 publication Critical patent/EP3730837A2/de
Publication of EP3730837A3 publication Critical patent/EP3730837A3/de
Application granted granted Critical
Publication of EP3730837B1 publication Critical patent/EP3730837B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F24C3/087—Arrangement or mounting of burners on ranges in baking ovens
    • 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
    • F23D14/10—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 with elongated tubular burner head
    • 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, e.g. noise reduction means
    • F23D14/48—Nozzles
    • 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, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation

Definitions

  • the present invention relates to improvements in gas burners.
  • Gas burner assemblies are used in traditional gas cooking ranges in both broiler and baking configurations. Traditionally these gas burner assemblies are comprised of several components, including a gas burner, a Venturi tube, an air shutter, an injector fitting and an injector.
  • the US 2003 / 0 145 848 A1 discloses a gas burner having an injector fitting, an injector connected thereto and an air shutter, wherein the air shutter is connected to a hex portion of the injector.
  • the DE 1 289 003 A discloses a multiple injection gas burner with an injector fitting, an injector and an air shutter, wherein the air shutter is connected to the injector.
  • the present invention is directed to improvements in gas burners according to the independent claim.
  • the invention is an improved injector assembly that is constructed out of two components: an injector fitting and an injector.
  • injector is passed through the opening of the air shutter and threaded into the injector fitting.
  • the air shutter is sandwiched between the injector and the injector fitting, resulting in a flush placement of the injector against either the wall or raised opening of the air shutter.
  • this method of engagement holds the air shutter and the injector assembly in proper position with fewer chances of erroneous placement.
  • top, bottom, front, back, left and right may be used. These terms are only intended to provide relational orientation with respect to one another. For example, any two opposed sides can be a right side and a left side and by changing to an opposed viewpoint, right versus left will be changed. Thus, top, bottom, front, back, left and right should not be considered limiting and are used only to distinguish their relationship to one another.
  • a major component of combustion systems is the mixer which mixes fuel gas with combustion air and sends the mixture to the burner at a fixed pressure. Important to the mixing process is the location and alignment of the gas orifice in relation to both the air intake and the Venturi tube. A misaligned or mis-located gas orifice can result in several forms of burner malfunction such as the creation of or increased amount of soot, flashback, and/or flame lifting at the burner.
  • FIG. 1 illustrates a standard burner bar 10 in a gas oven utilizing the improved injector assembly of the present invention.
  • the gas burner bar 10 generally includes a burner region 20, a Venturi tube 30, an air shutter 40, and an improved injector assembly 50. While the burner bar 10 is depicted as having an L-bend region 60, alternative embodiments allow for a burner bar 10 without a bend (e.g., straight).
  • fuel gas is injected into the burner bar 10 via the injector assembly 50; combustion air is drawn into the burner bar 10 at the air shutter 40 due to reduced pressure at the Venturi tube 30, allowing the combustion air to begin mixing with the fuel gas; the combustion air and fuel gas mixture is drawn into and through the Venturi tube 30 and is taken to the burner region where combustion occurs at a plurality of combustion points.
  • FIG. 2 illustrates a perspective view of the injector assembly 50 in accordance with embodiments of the invention in an unassembled state
  • FIG. 3 illustrates an exploded, close-up view of the unassembled improved injector assembly 50 in conjunction with the air shutter 40 and Venturi tube 30
  • the injector assembly 50 is assembled out of two components: an injector fitting 70 and an injector 80.
  • the injector fitting 70 has two attachment points (71 & 72).
  • the first attachment point 71 is positioned distal to the air shutter 40 and is generally connected to a gas line (not shown) which provides a fuel gas to the burner bar 10.
  • the first attachment 71 has male threads, although alternative methods of connection can be utilized.
  • the second attachment point 72 of the injector fitting 70 is positioned proximal to the air shutter 40 and, in contrast to the first attachment point 71, has female threads. This is an improvement over previous solutions for injector fittings, which will be illustrated shortly.
  • the injector 80 has an orifice 81 through which gas passes through the injector 80 into the air shutter 40 and the Venturi tube 30.
  • the injector 80 has a hexagonal head for ease of assembly, but alternative shapes can be utilized (e.g., square).
  • This gas flow is controlled by a regulator (not shown) connected to the gas line, the gas line being connected to the first attachment point 71 of the injector fitting 70.
  • the injector 80 has male threads that are inserted into the female threads of the second attachment point 72 of the injector fitting 70.
  • the air shutter 40 Sandwiched between the injector 80 and the injector fitting 71 is a portion of the air shutter 70. As illustrated in FIG. 3 , the air shutter 40 has a threadless, raised opening 41 through which the injector 80 passes through. After passing through the opening 41, the injector 80 is then threaded into the second attachment point 72 of the injector fitting 70. As a result, when engaged the injector 80 and the injector fitting 70 secure the air shutter 40 in a sandwich manner. Furthermore, this arrangement also serves to hold the injector fitting 70 and injector 80 in proper alignment. In alternative embodiments there is no raised section of the opening 41 in the air shutter 40.
  • FIGS. 4 , 5 and 6 illustrate close-up, perspective views of the assembled injector assembly 50 and air shutter 40.
  • the head of the injector 80 is held flush against the air shutter 40.
  • the head of the injector 80 is properly positioned in the mixing face, labeled as dimension "A.” This proper positioning results in a proper air fuel mixture entering the Venturi tube 30.
  • this proper positioning results in a proper air fuel mixture entering the Venturi tube 30.
  • this proper positioning of the injector 80 is repeatable during assembly of the gas burner bar 10.
  • the injector 80 internally, the proper direction is established in an internal fashion rather than in an external fashion.
  • the center line of the injector fitting 70, the injector 80, and the Venturi tube 30 are collinear (labeled as plane "B"), contributing to consistent gas flow and mixing while reducing flashback, flame lifting, and soot created as a result of misaligned injectors.
  • the present invention can be disposed in any gas cooking appliance that utilizes a gas burner bar, in particular cooking appliances with broil and/or bake functionality in an oven cavity used for the heating of foodstuffs.

Landscapes

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

Claims (10)

  1. Gas-Stabbrenner (10), der Folgendes umfasst:
    einen Brenner,
    ein Venturirohr (30), das an dem Brenner angebracht ist,
    eine Luftklappe (40), die an dem Venturirohr (30) angebracht ist, wobei die Luftklappe (40) eine Öffnung (41) aufweist,
    eine Injektor (80), der durch die Öffnung (41) der Luftklappe (40) hindurch verläuft, und
    einen Injektoranschluss (70), wobei der Injektoranschluss (70) an dem Injektor (80) angebracht ist,
    dadurch gekennzeichnet, dass ein Abschnitt der Luftklappe (40) zwischen dem Injektor (80) und dem Injektoranschluss (70) angeordnet ist, was zu einer flächenbündigen Anordnung des Injektors (80) an einer Wand oder der vorstehenden Öffnung (41) der Luftklappe (40) führt.
  2. Stabbrenner nach Anspruch 1, wobei der Brenner eine Brennerregion (20) mit mehreren Verbrennungsstellen aufweist.
  3. Stabbrenner nach Anspruch 1 oder 2, wobei die Luftklappe (40) eine Zweitöffnung für das Einströmen von Luft in den Gas-Stabbrenner (10) aufweist.
  4. Stabbrenner nach einem der Ansprüche 1 - 3, wobei die Öffnung (41) der Luftklappe (40) gewindelos ist und vorsteht.
  5. Stabbrenner nach einem der Ansprüche 1 - 4, wobei die Injektor (80) eine Mündung (81) aufweist, die mit dem Venturirohr (30) kollinear ist.
  6. Stabbrenner nach einem der Ansprüche 1 - 5, das ferner Folgendes umfasst:
    eine Gasleitung, die an dem Injektoranschluss (70) angebracht ist und ein Brenngas bereitstellt, und
    einen Regler, der an der Gasleitung angebracht ist und den Durchfluss des Brenngases reguliert.
  7. Stabbrenner nach einem der Ansprüche 1 - 6, das so ausgelegt ist, dass das Brenngas über eine Düse in eine Mischfläche (A) der Luftklappe (40) strömt, sich mit Luft aus einer Zweitöffnung der Luftklappe (40) vermischt, als Luft-Gas-Gemisch durch das Venturirohr (30) strömt und am Brenner verbrennt.
  8. Stabbrenner nach einem der Ansprüche 1 - 7, wobei die Injektor (80) in den Injektoranschluss (70) eingeschraubt ist.
  9. Kochgerät, wobei das Kochgerät Folgendes umfasst:
    einen Garraum und
    ein Gas-Stabbrenner (10) nach einem der Ansprüche 1 - 8, wobei der Gas-Stabbrenner (10) in dem Garraum angeordnet ist.
  10. Kochgerät nach Anspruch 9, wobei der Gas-Stabbrenner als Backofen- und/oder als Grillbrenner dienen kann.
EP20170876.5A 2019-04-25 2020-04-22 Gasbrennerstab mit befestigung einer brennstoffeinspritzdüse Active EP3730837B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16/393,989 US20200340675A1 (en) 2019-04-25 2019-04-25 Fuel injector fixation

Publications (3)

Publication Number Publication Date
EP3730837A2 EP3730837A2 (de) 2020-10-28
EP3730837A3 EP3730837A3 (de) 2020-12-02
EP3730837B1 true EP3730837B1 (de) 2024-06-05

Family

ID=70417323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20170876.5A Active EP3730837B1 (de) 2019-04-25 2020-04-22 Gasbrennerstab mit befestigung einer brennstoffeinspritzdüse

Country Status (2)

Country Link
US (1) US20200340675A1 (de)
EP (1) EP3730837B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI797007B (zh) * 2022-05-03 2023-03-21 愛烙達股份有限公司 高燃燒效率的燃燒裝置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289003B (de) * 1966-07-20 1969-02-13 Haller Meurer Werke Ag Mehrgasinjektor-Reihenbrenner fuer einen Raumheizofen
US6796302B2 (en) * 2002-02-07 2004-09-28 Hon Technology Inc. Mixture fitting for a combustible gas burner system
US11246451B2 (en) * 2015-10-12 2022-02-15 Weber-Stephen Products Llc Burner tube for gas grill

Also Published As

Publication number Publication date
US20200340675A1 (en) 2020-10-29
EP3730837A3 (de) 2020-12-02
EP3730837A2 (de) 2020-10-28

Similar Documents

Publication Publication Date Title
US11098891B2 (en) Additional primary air access for surface gas burners
EP3730837B1 (de) Gasbrennerstab mit befestigung einer brennstoffeinspritzdüse
CA2719675C (en) Burner for cooking appliances
AU2008358589B2 (en) Gas burner for ovens
ZA200409724B (en) Curvilinear burner tube
EP2052178B1 (de) Grill
CN109404904A (zh) 燃烧器及燃气热水器
CN210688216U (zh) 燃烧器的炉头、燃烧器和燃气灶具
CN219389735U (zh) 燃烧器和燃气灶
CN221005062U (zh) 气路组件和燃气设备
CN212930098U (zh) 燃烧器组件和灶具
CN220453661U (zh) 燃烧器模块及燃气器具
CN213272608U (zh) 燃烧器及厨房器具
CN220453734U (zh) 灶具
CN219414763U (zh) 燃烧器、烤箱和组合灶
CN211822388U (zh) 引射器、炉头、燃烧器和燃气灶
CN219656135U (zh) 分火器、燃烧器和灶具
EP3795921B1 (de) Wasserleitungverbindungsstruktur und brenner
CN216744470U (zh) 一种燃气灶具燃烧结构
CN219389726U (zh) 一种喷嘴的安装结构
CN219976507U (zh) 风门调节装置及灶具
JP7168174B1 (ja) 予混合バーナ
CN220931180U (zh) 进气组件和灶具
CN215808466U (zh) 一种火盖、燃烧器及燃气灶
CN221098611U (zh) 限流件、进气组件和灶具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F23D 14/64 20060101ALI20201026BHEP

Ipc: F23D 14/48 20060101ALI20201026BHEP

Ipc: F23D 14/10 20060101AFI20201026BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210602

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220504

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240105

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602020031877

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D