EP3730837A2 - Gasbrennerprofilstange mit befestigung einer brennstoffeinspritzdüse - Google Patents

Gasbrennerprofilstange mit befestigung einer brennstoffeinspritzdüse Download PDF

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Publication number
EP3730837A2
EP3730837A2 EP20170876.5A EP20170876A EP3730837A2 EP 3730837 A2 EP3730837 A2 EP 3730837A2 EP 20170876 A EP20170876 A EP 20170876A EP 3730837 A2 EP3730837 A2 EP 3730837A2
Authority
EP
European Patent Office
Prior art keywords
injector
burner
air shutter
gas
bar
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.)
Granted
Application number
EP20170876.5A
Other languages
English (en)
French (fr)
Other versions
EP3730837A3 (de
EP3730837B1 (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

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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
    • F23D14/02—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
    • 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
    • F23D14/46—Details
    • 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
    • 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 technology 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 present invention is directed to improvements in gas burners according to the independent claims. These improvements include reduced part counts in injector assemblies, increased reliability, easier assembly, and a reduction in misaligned gas burner problems.
  • 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.
  • the mixing unit may comprise elements and features of the injector fitting, air shutter and/or injector disclosed with respect to embodiments of the burner bar.
  • 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)
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 true EP3730837A2 (de) 2020-10-28
EP3730837A3 EP3730837A3 (de) 2020-12-02
EP3730837B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4273450A1 (de) * 2022-05-03 2023-11-08 Pro-Iroda Industries, Inc. Verbrennungsvorrichtung mit hoher verbrennungseffizienz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12241637B2 (en) * 2019-11-27 2025-03-04 Bharat Petroleum Corporation Limited Domestic cooking stove for combustion of LPG fuel with high thermal efficiency
CN117053191B (zh) * 2022-05-05 2026-04-21 爱烙达股份有限公司 高燃烧效率的燃烧装置

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4273450A1 (de) * 2022-05-03 2023-11-08 Pro-Iroda Industries, Inc. Verbrennungsvorrichtung mit hoher verbrennungseffizienz
US12398881B2 (en) 2022-05-03 2025-08-26 Pro-Iroda Industries, Inc. Combustion device with high combustion efficiency

Also Published As

Publication number Publication date
EP3730837A3 (de) 2020-12-02
US20200340675A1 (en) 2020-10-29
EP3730837B1 (de) 2024-06-05

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