EP0028102B1 - Gasbrenner - Google Patents

Gasbrenner Download PDF

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Publication number
EP0028102B1
EP0028102B1 EP19800303653 EP80303653A EP0028102B1 EP 0028102 B1 EP0028102 B1 EP 0028102B1 EP 19800303653 EP19800303653 EP 19800303653 EP 80303653 A EP80303653 A EP 80303653A EP 0028102 B1 EP0028102 B1 EP 0028102B1
Authority
EP
European Patent Office
Prior art keywords
blade member
blade
lips
blade members
blank
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.)
Expired
Application number
EP19800303653
Other languages
English (en)
French (fr)
Other versions
EP0028102A3 (en
EP0028102A2 (de
Inventor
Michael Boyes
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.)
Aeromatic Co Ltd
Original Assignee
Aeromatic Co Ltd
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 Aeromatic Co Ltd filed Critical Aeromatic Co Ltd
Publication of EP0028102A2 publication Critical patent/EP0028102A2/de
Publication of EP0028102A3 publication Critical patent/EP0028102A3/en
Application granted granted Critical
Publication of EP0028102B1 publication Critical patent/EP0028102B1/de
Expired 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
    • F23D14/02—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
    • F23D14/045—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 a plurality of burner bars assembled together, e.g. in a grid-like arrangement

Definitions

  • the invention relates to a gas burner of the bladed type, for use particularly in domestic gas-fired appliances, to the blade members of the burner, and to the method of manufacture of the blade members.
  • the individual blades are mounted in a parallel, closely spaced relation on a common mixing chamber such that internal cavities of the blades communicate with the chamber. Gaseous fuel is passed into the chamber and entrains primary air therewith, the fuel and air being mixed in the chamber and passing through these blades to outlet apertures where the mixture is ignited, secondary air being available at the outlet apertures.
  • Each blade is secured to the mixing chamber for example by welding.
  • a blade member for use in a gas burner, the blade member having an internal cavity defined by a pair of side walls, each side wall having an opening therein coaxial with an opening in the other side wall to provide a passage through the blade member which is in communication with the internal cavity, the openings, for connection of a plurality of the blade members to one another, having outwardly extending lips of such different dimensions as to provide a sealed but releasable push fit with lips of adjacent blade members, the side walls having one connecting edge portion formed with an outlet aperture arrangement, and the internal cavity being closed along the other connecting edge portions of the side walls.
  • the blade member is formed of stainless steel.
  • said other connecting edge portions of the side walls are clinched together.
  • said other connecting edge portion may be spot welded.
  • the present invention also provides a gas burner comprising a plurality of blade members according to any of the preceding claims, the blade members being connected together by the lip of each blade member having the smaller dimension being releasably push fitted within the other of the lips of an adjacent blade member, such that the blade members are retained substantially parallel to one another with said one connecting edge portions facing in the same direction, an end one of the plurality of the blade members being provided with means for closing the outwardly facing opening thereof, and the other end one of the blade members having means for mounting a gas inlet adjacent to the outwardly facing opening thereof.
  • the present invention further provides a method of manufacturing a gas burner, the method comprising forming each of a plurality of blade members by pressing a blank out of a sheet material, forming an outlet aperture arrangement over a longitudinally extending area of the blank, forming a pair of openings one on either side of said area, and forming each opening with a projecting lip, the lips being of different dimensions and push fitting the lips (30, 32) of each blade member into the lips of adjacent ones of the blade members to provide sealed but releasable connections, the pressing of the blank being such that the edges are displaced relative to the remaining part of the blank in a direction opposite to that in which the lips extend, the blade member being formed by folding along each side of said area such that the openings are coaxial and the edges engage together and are sealed.
  • the displaced edge to one side of the central area has a width greater than the other, such that the edges can be clinched together for sealing.
  • the edges can be sealed for example by spot welding.
  • a blank 10 for a blade member 11 intended to be used in a gas burner is pressed from a sheet of material such as low grade stainless steeel, and is of substantially diamond configuration, this being a suitable shape for pressing a-plurality of blanks from the sheet with minimum wastage of material.
  • the area of the blank 10 inwardly of the edges thereof is embossed relative to the edges to define relatively displaced peripheral areas 12, 14 for a purpose hereinafter described.
  • the peripheral areas are separated by a section 18 which is embossed together with the remaining area of the blank.
  • This arrangement comprises a plurality of cross shaped flame ports or apertures 20 and smaller flame retention holes or ports 22 provided around each of the apertures 20, although it should be appreciated that the ports 20 may be of other shapes.
  • the blank 10 is further provided with a pair of extruded openings 24, 26 whose axes lie on a transverse centre line 28 of the blank and are equispaced to either side of the central area having the outlet aperture arrangement.
  • Each of the openings 24, 26 is formed with an annular lip 30, 32 respectively projecting from the blank in the direction of embossing.
  • the lip 30 has a smaller diameter than the lip 32 and an inwardly turned free edge for a purpose hereinafter described.
  • the blank is folded along each side of the central area defined by the outlet aperture arrangement, such that the openings 24, 26 are coaxial with one another and the peripheral areas 12, 14 abut and are secured together in a sealing manner, for example, by spot welding.
  • walls 34, 36 defined between the peripheral areas 12, 14 respectively and the sections 18 are folded inwardly relative to one another on to the inner faces of the sections 18 and abut one another for spot welding.
  • the embossing of the main area of the blank thus defines in the final form of the blade member an internal cavity defined by side walls 28, 40 which provides communication between the openings 24, 26 and the outlet apertures 22.
  • a plurality of the formed blade members 11 are connected together as shown in Fig. 4.
  • the blade members 11 are arranged parallel to one another with their larger diameter lips 32 on corresponding sides such that, to connect one blade member to another, the smaller diameter lip 30 of one blade member is fitted within the larger diameter lip 32 of the adjacent member.
  • the inwardly turned edge facilitates the lead in.
  • the dimensions of the lips 30, 32 are such that a tight fit is provided and no further connections are necessary for sealing because of the low pressure of the gas being used and also the fact that the burner apparatus is located within a surrounding chamber.
  • the outwardly extending lip of the blade member at one end receives an end cap 42 to close the opening, and the blade member at the other end is arranged to mount a gas inlet pipe, on a connection 44 having an injector 45, by means of a bracket 46 in a conventional manner, such that primary air is entrained when the gas passes from the inlet to the adjacent opening of the end blade member.
  • a venturi arrangement comprising ports 48, 50 is provided in the opening adjacent to the gas inlet for even distribution of the gas and air mixture to all the blade members 11.
  • the burner so formed thus has a chamber for mixing of the gas and air defined by the cooperating lips of the openings and no separate mixing chamber is required.
  • the burner is therefore considerably easier and cheaper to make than the conventional burner where individual blade members have to be fixed to a common mixing chamber by welding or the like.
  • the burner formed by the blade members 11 arranged in a parallel closely spaced relation provides good gas distribution and a good flame, additional apertures assisting in holding down the flame as necessary. It will be appreciated that a burner having any desired number of blade members 11 is easily produced and also in the event of damage to a blade member it will be possible to dismantle the burner and replace the damaged blade member.
  • peripheral areas 12, 14 may be formed of different widths such that the peripheral area of greater width can be clinched over the other area as an alternative to brazing or the like.
  • the advantage of this is that the blade member can be manufactured to its finished form in the one workshop.

Landscapes

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

Claims (9)

1. In einem Gasbrenner zu verwendendes Lammellenglied, das einen inneren Hohlraum aufweist, der durch ein Paar von Seitenwänden begrenzt ist, die jeweils eine mit einer Öffnung in der anderen Seitenwand koaxiale Öffnung zur Bildung eines Durchgangs durch das Lamellenglied enthalten, wobei die Seitenwände einen mit einer Auslaßöffnungsanordnung ausgebildeten verbindenden Randbereich besitzen und der innere Hohlraum den anderen verbindenden Randbereichen der Seitenwände entlang geschlossen ist, dadurch gekennzeichnet, daß zum Verbinden einer Mehrzahl von Lammellengliedern aneinander die Öffnungen (24, 26) sich nach aussen hin erstreckende Lippen (30, 32) mit unterschiedlichen Abmessungen besitzen, derart daß die Lippen benachbarter Lamellenglieder einen dichten, jedoch lösbaren Schiebe-oder Stecksitz bilden.
2. Lammellenglied nach Anspruch 1, dadurch gekennzeichnet, daß das Lamellenglied (11) aus rostfreiem Stahl besteht.
3. Lamellenglied nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die anderen verbindenden Randbereiche der Seitenwände (38, 40) miteinander vernietet sind.
4. Lamellenglied nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die anderen verbindenden Randbereiche der Seitenwände (38, 40) durch Punkschweißen miteinander verbunden sind.
5. Lamellenglied nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Auslaßöffnungsanordnung eine Mehrzahl von Öffnungen (20) enthält, die entlang der Länge des einen verbindenden Randbereichs vorgesehen sind, und daß eine Mehrzahl von Löchern (22) um jede kreuzförmige Öffnung (20) herum angeordnet ist.
6. Gasbrenner, gekennzeichnet durch eine Mehrzahl von Lamellengliedern (11) gemäß einem der vorhergehenden Ansprüche, wobei die Lamellenglieder (11) miteinander verbunden sind, in dem die Lippe (30) kleinerer Abmessung jedes Lamellengliedes lösbar in die andere (32) der Lippen eines benachbarten Lamellengliedes passend eingeschoben oder eingesteckt ist, derart, daß die Lamellenglieder im wesentlichen parallel zueinander gehalten sind, wobei die einen verbindenden Randbereiche in die gleiche Richtung weisen, und wobei ein Endlamellenglied der Mehrzahl von Lamellengliederen mit Mitteln (42) zum Verschließen seiner nach aussen gerichteten Öffnung versehen ist und das andere Endlamellenglied Mittel zum Befestigen eines Gaseinlasses (44) in der Nachbarschaft seiner nach aussen gerichteten Öffnung besitzt.
7. Gasbrenner nach Anspruch 6, wobei die Verschlußmittel eine Kappe (42) enthalten, die lösbar auf die Lippe (30 oder 32) der nach aussen gerichteten Öffnung aufgeschoben oder aufgesteckt ist.
8. Verfahren zur Herstellung eines Gasbrenners, bei dem jedes einer Mehrzahl von Lamellengliedern durch Auspressen eines Zuschnitts oder Rohlings aus einem Flachmaterial gebildet wird, wobei man über einen sich der Länge nach erstreckenden Bereich des Zuschnitts oder Rohlings eine Auslaßöffnungsanordnung ausbildet und an jeder Seite dieses Bereichs eine der Öffnungen eines Paares von Öffnungen anbringt, wobei das Pressen des Zuschnitts oder Rohlings derart erfolgt, daß die Kanten relativ zur verbleibenden Partie des Zuschnitts oder Rohlings versetzt sind, und wobei das Lamellenglied durch Falten entlang jeder Seite des Bereichs derart geformt wird, daß die Öffnungen koaxial sind und die Kanten miteinander in Eingriff stehen und abgedichtet sind, dadurch gekennzeichnet, daß jede Öffnung (24, 26) mit einer Lippe (30, 32) versehen wird, die in einer der Versetzungsrichtung der Kanten entgegengesetzten Richtung vorsteht, wobei die Lippen (30, 32) unterschiedliche Abmessungen aufweisen und die Lippen (30, 32) jedes Lamellengliedes in die Lippen der benachbarten Lamellenglieder eingeschoben oder eingesteckt werden, so daß man dichte, jedoch lösbare Verbindungen erhält.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß man die Öffnungen (24, 26) so anbringt, daß ihre Achsen gleichen Abstand von einer Längsmittelinie des Zuschnitts oder Rohlings (10) besitzen und auf einer sich im wesentlichen rechtwinkelig zu der Längsmittellinie erstreckenden Linie angeordnet sind.
EP19800303653 1979-10-20 1980-10-16 Gasbrenner Expired EP0028102B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7936503 1979-10-20
GB7936503 1979-10-20

Publications (3)

Publication Number Publication Date
EP0028102A2 EP0028102A2 (de) 1981-05-06
EP0028102A3 EP0028102A3 (en) 1981-07-15
EP0028102B1 true EP0028102B1 (de) 1984-05-23

Family

ID=10508676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800303653 Expired EP0028102B1 (de) 1979-10-20 1980-10-16 Gasbrenner

Country Status (2)

Country Link
EP (1) EP0028102B1 (de)
DE (1) DE3067959D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI621813B (zh) * 2016-09-26 2018-04-21 Grand Mate Co Ltd burner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840151A (en) * 1955-09-06 1958-06-24 Comb Enginerring Inc Gas burner of multi section port construction
US3412940A (en) * 1966-06-13 1968-11-26 Luciano Ferroli Tredicesimo Burner for town gas, liquefied gas, natural gas and mixtures thereof, and adapted to be fitted on boilers, stoves, air heaters and the like
GB1231890A (de) * 1967-10-17 1971-05-12
DE2257382A1 (de) * 1972-11-23 1974-06-06 Silvio Polidoro Gasbrenner

Also Published As

Publication number Publication date
EP0028102A3 (en) 1981-07-15
DE3067959D1 (en) 1984-06-28
EP0028102A2 (de) 1981-05-06

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