EP0777083B1 - Mélangeur pour brûleur - Google Patents

Mélangeur pour brûleur Download PDF

Info

Publication number
EP0777083B1
EP0777083B1 EP96116865A EP96116865A EP0777083B1 EP 0777083 B1 EP0777083 B1 EP 0777083B1 EP 96116865 A EP96116865 A EP 96116865A EP 96116865 A EP96116865 A EP 96116865A EP 0777083 B1 EP0777083 B1 EP 0777083B1
Authority
EP
European Patent Office
Prior art keywords
burner
ring
mixing device
disc
lateral surface
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 - Lifetime
Application number
EP96116865A
Other languages
German (de)
English (en)
Other versions
EP0777083A3 (fr
EP0777083A2 (fr
Inventor
Paul Bognar
Gisbert Fischer
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.)
MEKU Verwaltungsgesellschaft mbH
Original Assignee
MEKU Verwaltungsgesellschaft mbH
MEKU VERWALTUNGSGMBH
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 MEKU Verwaltungsgesellschaft mbH, MEKU VERWALTUNGSGMBH filed Critical MEKU Verwaltungsgesellschaft mbH
Publication of EP0777083A2 publication Critical patent/EP0777083A2/fr
Publication of EP0777083A3 publication Critical patent/EP0777083A3/fr
Application granted granted Critical
Publication of EP0777083B1 publication Critical patent/EP0777083B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/50—Control of recirculation rate

Definitions

  • the invention relates to a burner with a burner tube according to the preamble of claim 1.
  • a burner of this type is known from DE-A-42 44 400.
  • this known burner there is a mixing device axially displaceable in the burner tube around the passage cross section of recirculation openings through which combustion gases recirculate from the firebox into the flame, adjustable to change, especially in the start phase close.
  • the mixing device is used for axial adjustment carried by an additional pipe socket that over a round cord seal slidable and sealed in the Burner tube is stored.
  • the elastic round cord seal absorbs the radial tolerances and ensures displaceability.
  • This burner is expensive because of the additional Pipe socket is needed to guide and seal as far away from the flame as possible and their keep thermal stress low.
  • the invention has for its object to provide a burner axially adjustable mixing device to create the easier is built and manufactured accordingly cheaper can be.
  • this object is achieved by a burner with the features of claim 1.
  • the basic idea of the invention is in a burner the disc blocking the cross section of the burner tube the mixing device directly by means of a cylindrical lead metallic ring sealed in the burner tube.
  • the ring gives because of its essentially cylindrical Training a good support and guidance of the disc and thus the mixing device and ensures adequate Seal.
  • the metallic material of the ring is thermal resilient, so that the sliding and sealing by the effects of heat are not affected.
  • the ring preferably has an axially continuous parting line on so that it just pulled up on the circumference of the disc can be and resiliently against the inner wall of the burner tube creates. It is also a shrinking of the ring possible on the disc.
  • the outer lateral surface of the ring is expediently shown in their axially central region cylindrical and slightly rounded towards the front and rear end.
  • the cylindrical area ensures a good seal, while the crowned ends tilt and jam counteract the axial displacement.
  • a peripheral bead is expediently in the burner tube molded, which abuts the ring from the outside. This The circumferential bead creates a narrow sealing in the axial direction Contact zone, which ensures a good seal on the one hand and on the other hand the axial displacement is little is hindered, since there is also a slight tilting of the mixing device compared to the burner tube during axial displacement is possible.
  • FIG. 1 is an example of a burner with a mixing device shown, which is sealed in the manner according to the invention is axially adjustable.
  • a burner tube 10 On the downstream front The end of a burner tube 10 is a recirculation tube 12 attached by means of a bayonet lock 14. To the extent of Burner tube 10 are adjacent to the rear end of the recirculation tube 12 recirculation openings 16 are provided, through which combustion gases from the combustion chamber into the in the Recirculation tube 12 burning flame can be returned can.
  • the mixing device has a cross section of the burner tube 10 blocking disc 18, the middle of a nozzle opening through which the nozzle shaft 20 of the burner is passed through.
  • the nozzle shaft 20 is in a centering hub 22 held, which is attached to the disc 18.
  • Around the centering hub 22 are air passage openings in the Washer 18 provided that an air passage into a downstream on the disk 18 attached conically guide constricting nozzle 24.
  • the combustion air will Supplied via the burner tube 10, passes through the air passage openings the disc 18 into the front nozzle 24 and with the fuel supplied via the nozzle shaft 20 mixes the burning in the recirculation tube 12 Flame fed.
  • the disc 18 For axial adjustment of the mixing device in the burner tube 10 sits the disc 18 with its outer circumference in one metallic ring 26.
  • the ring 26 has essentially the shape a short cylinder, which is circumferential by a axially continuous Parting line 28 is divided.
  • Axial center is in the inner Shell surface of the ring 26 a circumferential in the circumferential direction Inner groove 30 provided. With this inner groove 30 engages Ring 26 the peripheral edge of the disc 18th
  • the outer lateral surface of the ring 26 is in the axially middle Area formed straight cylindrical and is on the front and rear margin slightly rounded inwards.
  • the burner tube 10 has a circumferential slightly pressed inward Circumferential bead 32. When the mixing device is inserted this peripheral bead 32 on the outer circumferential surface of the ring 26 on.
  • the ring 26 becomes light by means of the parting line 28 spread out and can thereby be pulled over the disc 18. As soon as the disk 18 lies in the inner groove 30, it snaps the ring 26 due to its elasticity together and encompasses with its inner groove 30 the peripheral edge of the disc 18. If the Mixing device now inserted into the burner tube 10, so sets the ring 26 with its outer surface resiliently on the Inner wall of the burner tube 10.
  • the parting line 28 enables thereby an elastically resilient compensation of the diameter tolerances.
  • the mixing device is positioned in the burner tube 10 in such a way that the ring 26 with the cylindrical central region of its outer circumferential surface abuts the peripheral bead 32. So that is an axial displacement of the mixing device in the burner tube 10 possible over a distance equal to the axial width of the middle cylindrical area of the outer surface of the ring 26 corresponds.
  • the slightly inward in the cross section of the Burner tube 10 projecting peripheral bead 32 and the crowned Ends of the outer surface of the ring 26 cause a slight axial tilting of the axis of the mixing device opposite the axis of the burner tube 10 possible during the shift is without this leading to jamming.
  • the axial distance of the peripheral bead 32 from the recirculation openings 16 and the axial width of the ring 26 are so on top of each other matched that the front edge of the ring 26 behind the Trailing edge of the recirculation openings 16 is when the Mixing device in the rear end position of its adjustment path located. If the mixer is pushed forward, so the front edge of the ring 26 increasingly covers the Passage cross section of the recirculation openings 16.
  • the axial width of the cylindrical central area of the outer Shell surface of the ring 26 is selected so that the adjustment path the mixing device essentially the axial width of the Recirculation openings 16 corresponds, so that an adjustment until the recirculation openings are completely closed 16 is possible.
  • About the axial displacement of the mixing device is a simple recirculation setting too possible during operation.
  • the use of the ring 26 both for guiding the mixing device for axial displacement as well as for sealing the mixing device against the burner tube 10 reduces the for the mixing device required parts and thus the Manufacturing and assembly costs. Since the ring 26 is made of a metallic Material, it is thermally highly resilient, so that the arrangement of the seal by means of the ring 26 in the near flame Area of the mixing device is possible. If the ring 26 at the same time as a closing device for the recirculation openings 16 used, another can be used here Construction part can be saved.

Landscapes

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

Claims (6)

  1. Brûleur comprenant un tube de brûleur 10, à l'intérieur duquel est monté un mélangeur réglage axialement, un joint (26) assurant l'étanchéité du mélangeur à sa périphérie par rapport au tube de brûleur (10), et un disque (18) du mélangeur, monté à l'intérieur du tube de brûleur (10) perpendiculairement à son axe, et comportant un orifice de buse, l'air de combustion passant à travers des orifices d'admission du disque (18), avant d'être mélangé et brûlé avec le combustible acheminé à travers une buse (20),
    caractérisé en ce que
    le joint (26) est un anneau métallique (26) essentiellement cylindrique, ayant son enveloppe extérieure pouvant coulisser en contact étanche à l'intérieur de la paroi du tube de brûleur (10), et comportant dans sa paroi intérieure le disque (18).
  2. Brûleur selon la revendication 1,
    caractérisé en ce que
    l'anneau (26) comporte sur sa paroi interne, une rainure intérieure (30), dans laquelle s'encastre le disque (18) par son bord périphérique.
  3. Brûleur selon la revendication 1 ou 2,
    caractérisé en ce que
    l'anneau (26) comporte une fente traversante axiale (28).
  4. Brûleur selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    l'enveloppe extérieure de l'anneau (26) est cylindrique dans sa partie axiale médiane, et légèrement incurvée à ses deux extrémités axiales.
  5. Brûleur selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    le tube de brûleur (10) comporte une moulure (32) en saillie vers l'intérieur, contre laquelle prend appui l'enveloppe extérieure de l'anneau (26).
  6. Brûleur selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    le tube de brûleur (10) comporte sur sa périphérie, au moins un orifice de recirculation (16) et cet orifice de recirculation (16) est réglé en fermeture par l'anneau (26) en déplaçant axialement le mélangeur.
EP96116865A 1995-11-29 1996-10-21 Mélangeur pour brûleur Expired - Lifetime EP0777083B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29518918U 1995-11-29
DE29518918U DE29518918U1 (de) 1995-11-29 1995-11-29 Mischeinrichtung für einen Brenner

Publications (3)

Publication Number Publication Date
EP0777083A2 EP0777083A2 (fr) 1997-06-04
EP0777083A3 EP0777083A3 (fr) 1998-08-19
EP0777083B1 true EP0777083B1 (fr) 2001-07-04

Family

ID=8016056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116865A Expired - Lifetime EP0777083B1 (fr) 1995-11-29 1996-10-21 Mélangeur pour brûleur

Country Status (3)

Country Link
EP (1) EP0777083B1 (fr)
AT (1) ATE202836T1 (fr)
DE (2) DE29518918U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1898152A2 (fr) * 2006-09-07 2008-03-12 MEKU Metallverarbeitungs GmbH & Co. KG Unité de mélange pour un brûleur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29518919U1 (de) * 1995-11-29 1996-01-25 MEKU Metallverarbeitungs-GmbH, 78083 Dauchingen Mischeinrichtung für einen Brenner
DE102004009787B3 (de) * 2004-02-28 2005-08-11 Bbt Thermotechnik Gmbh Mischeinrichtung für einen Öl- oder Gas-Gebläsebrenner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992020964A1 (fr) * 1991-05-24 1992-11-26 Sci Mercimmo Procede pour la combustion faiblement polluante d'un combustible
DE4209221A1 (de) * 1992-03-21 1993-09-23 Deutsche Forsch Luft Raumfahrt Stickoxidarmer brenner
DE9212924U1 (de) * 1992-09-25 1992-11-26 MEKU Metallverarbeitungs-GmbH, 7735 Dauchingen Mischeinrichtung für einen Brenner
DE4244400C2 (de) * 1992-12-29 1999-02-04 Deutsch Zentr Luft & Raumfahrt Brenner zur Heißgaserzeugung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1898152A2 (fr) * 2006-09-07 2008-03-12 MEKU Metallverarbeitungs GmbH & Co. KG Unité de mélange pour un brûleur
EP1898152A3 (fr) * 2006-09-07 2008-12-10 MEKU Metallverarbeitungs GmbH & Co. KG Unité de mélange pour un brûleur

Also Published As

Publication number Publication date
EP0777083A3 (fr) 1998-08-19
ATE202836T1 (de) 2001-07-15
EP0777083A2 (fr) 1997-06-04
DE59607211D1 (de) 2001-08-09
DE29518918U1 (de) 1996-01-25

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