EP0777083A2 - Mixing device for burner - Google Patents

Mixing device for burner Download PDF

Info

Publication number
EP0777083A2
EP0777083A2 EP96116865A EP96116865A EP0777083A2 EP 0777083 A2 EP0777083 A2 EP 0777083A2 EP 96116865 A EP96116865 A EP 96116865A EP 96116865 A EP96116865 A EP 96116865A EP 0777083 A2 EP0777083 A2 EP 0777083A2
Authority
EP
European Patent Office
Prior art keywords
mixing device
tube
ring
seal
burner
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
EP96116865A
Other languages
German (de)
French (fr)
Other versions
EP0777083A3 (en
EP0777083B1 (en
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 Metallverarbeitungs 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 MEKU Metallverarbeitungs GmbH filed Critical MEKU Metallverarbeitungs GmbH
Publication of EP0777083A2 publication Critical patent/EP0777083A2/en
Publication of EP0777083A3 publication Critical patent/EP0777083A3/en
Application granted granted Critical
Publication of EP0777083B1 publication Critical patent/EP0777083B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 mixing device for a burner according to the preamble of claim 1.
  • a mixing device of this type is known from DE 92 12 924 U1.
  • This known mixing device is axially displaceable in the burner tube in order to adjust the passage cross section of recirculation openings through which combustion gases recirculate from the combustion chamber into the flame.
  • the mixing device is carried by an additional pipe socket, which is displaceably and sealedly mounted in the burner pipe via a round cord seal.
  • the elastic round cord seal absorbs the radial tolerances and ensures that it can be moved.
  • This mixing device is complex since the additional pipe socket is required in order to arrange the guiding and sealing as far as possible from the flame and to keep its thermal load low.
  • the invention has for its object to provide an axially adjustable mixing device which is of simple construction and can accordingly be manufactured more cost-effectively.
  • the basic idea of the invention is to guide the disc of the mixing device which shuts off the tube cross section in a sealed manner in the tube by means of a cylindrical metallic ring. Due to its essentially cylindrical design, the ring provides good support and guidance for the disk and thus for the mixing device, and ensures adequate sealing.
  • the metallic material of the ring is thermally resilient, so that the displaceability and sealing are not affected by the heat.
  • the ring preferably has an axially continuous parting line, so that it can simply be drawn onto the circumference of the disk and resiliently rests against the inner wall of the tube. It is also possible to shrink the ring onto the disc.
  • the outer circumferential surface of the ring is expediently cylindrical in its axially central region and slightly rounded toward the front and rear ends.
  • the cylindrical area ensures a good seal, while the crowned ends counteract tilting and jamming during axial displacement.
  • a circumferential bead is expediently formed in the tube and bears against the ring from the outside. This circumferential bead creates a narrow sealing contact zone in the axial direction, which on the one hand ensures a good seal and on the other hand little impedes the axial displacement, since a slight tilting of the mixing device relative to the tube is also possible during the axial displacement.
  • FIG. 1 shows an example of a mixing device which is sealed and axially adjustable in the manner according to the invention.
  • a recirculation tube 12 is attached to the downstream front end of a burner tube 10 by means of a bayonet lock 14.
  • a bayonet lock 14 In the circumference of the burner tube 10, adjacent to the rear end of the recirculation tube 12, recirculation openings 16 are provided, through which combustion gases can be returned from the combustion chamber into the flame burning in the recirculation tube 12.
  • the mixing device has a disc 18 which blocks the cross section of the burner tube 10 and which has a nozzle opening in the center through which the nozzle shaft 20 of the burner is guided.
  • the nozzle shaft 20 is held in a centering hub 22 which is fastened to the disk 18.
  • the combustion air is supplied via the burner tube 10, passes through the air passage openings of the disk 18 into the front nozzle 24 and is mixed with the fuel supplied via the nozzle shaft 20 and fed to the flame burning in the recirculation tube 12.
  • the disk 18 is seated with its outer circumference in a metallic ring 26.
  • the ring 26 has essentially the shape of a short cylinder, which is circumferential by an axially continuous one Parting line 28 is divided.
  • An inner groove 30 running circumferentially in the circumferential direction is provided axially in the center of the inner circumferential surface of the ring 26. With this inner groove 30, the ring 26 engages around the peripheral edge of the disk 18.
  • the outer circumferential surface of the ring 26 is straight cylindrical in the axially central region and is rounded slightly inward at the front and rear edges.
  • the burner tube 10 has a circumferential bead 32 which is slightly pressed inwards. When the mixing device is used, this peripheral bead 32 rests on the outer circumferential surface of the ring 26.
  • the ring 26 is spread slightly by means of the parting line 28 and can thus be pulled over the disk 18.
  • the ring 26 snaps together due to its elasticity and engages around the peripheral edge of the disk 18 with its inner groove 30 resiliently on the inner wall of the burner tube 10.
  • the parting line 28 enables 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 lies with the cylindrical central region of its outer lateral surface on the peripheral bead 32.
  • An axial displacement of the mixing device in the burner tube 10 is thus possible over a distance which corresponds to the axial width of the central cylindrical region of the outer circumferential surface of the ring 26.
  • the slightly inwardly projecting in the cross section of the burner tube 10 circumferential bead 32 and the crowned ends of the outer circumferential surface of the ring 26 cause a slight axial tilting of the axis of the mixing device relative to the axis of the burner tube 10 during displacement is possible without this leads to a jamming.
  • the axial distance of the peripheral bead 32 from the recirculation openings 16 and the axial width of the ring 26 are coordinated with one another such that the front edge of the ring 26 lies behind the rear edge of the recirculation openings 16 when the mixing device is in the rear end position of its adjustment path. If the mixing device is pushed forward, 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 region of the outer circumferential surface of the ring 26 is selected so that the adjustment path of the mixing device essentially corresponds to the axial width of the recirculation openings 16, so that adjustment is possible until the recirculation openings 16 are completely closed. A simple adjustment of the recirculation is also possible during operation via the axial displacement of the mixing device.
  • the use of the ring 26 both for guiding the mixing device during the axial displacement and for sealing the mixing device against the burner tube 10 reduces the parts required for the mixing device and thus the manufacturing and assembly costs. Since the ring 26 consists of a metallic material, it can withstand high thermal loads, so that it is possible to arrange the seal by means of the ring 26 in the area of the mixing device near the flame. If the ring 26 is also used at the same time as a closure member for the recirculation openings 16, a further structural part can be saved here as well.

Landscapes

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

Abstract

The burner mixing device has a tube (10) in which it can be adjusted in position axially, with a seal, sealing the mixing device at the outside against the tube, and with a disc (18) fitted perpendicular to the tube axis in the tube. The seal consists basically of a cylindrical metal ring (26), the external surface of which effects the seal. It can be moved along relative to the internal wall of the tube. The disc is fitted in the internal surface of the ring, possibly in a groove in it.

Description

Die Erfindung betrifft eine Mischeinrichtung für einen Brenner gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a mixing device for a burner according to the preamble of claim 1.

Eine Mischeinrichtung dieser Gattung ist aus der DE 92 12 924 U1 bekannt. Diese bekannte Mischeinrichtung ist axial in dem Brennerrohr verschiebbar, um den Durchtrittsquerschnitt von Rezirkulationsöffnungen einstellbar zu verändern, durch welche Verbrennungsgase aus dem Feuerraum in die Flamme rezirkulieren. Zur axialen Verstellung wird die Mischeinrichtung von einem zusätzlichen Rohrstutzen getragen, der über eine Rundschnur-Dichtung verschiebbar und abgedichtet in dem Brennerrohr gelagert ist. Die elastische Rundschnur-Dichtung nimmt die radialen Toleranzen auf und gewährleistet eine Verschiebbarkeit. Diese Mischeinrichtung ist aufwendig, da der zusätzliche Rohrstutzen benötigt wird, um die Führung und Abdichtung möglichst weit von der Flamme entfernt anzuordnen und deren thermische Belastung gering zu halten.A mixing device of this type is known from DE 92 12 924 U1. This known mixing device is axially displaceable in the burner tube in order to adjust the passage cross section of recirculation openings through which combustion gases recirculate from the combustion chamber into the flame. For axial adjustment, the mixing device is carried by an additional pipe socket, which is displaceably and sealedly mounted in the burner pipe via a round cord seal. The elastic round cord seal absorbs the radial tolerances and ensures that it can be moved. This mixing device is complex since the additional pipe socket is required in order to arrange the guiding and sealing as far as possible from the flame and to keep its thermal load low.

Der Erfindung liegt die Aufgabe zugrunde, eine axial verstellbare Mischeinrichtung zu schaffen, die einfacher aufgebaut ist und dementsprechend kostengünstiger hergestellt werden kann.The invention has for its object to provide an axially adjustable mixing device which is of simple construction and can accordingly be manufactured more cost-effectively.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Mischeinrichtung mit den Merkmalen des Anspruchs 1.This object is achieved according to the invention by a mixing device with the features of claim 1.

Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Der Grundgedanke der Erfindung besteht darin, die den Rohrquerschnitt absperrende Scheibe der Mischeinrichtung unmittelbar mittels eines zylindrischen metallischen Ringes abgedichtet in dem Rohr zu führen. Der Ring gibt aufgrund seiner im wesentlichen zylindrischen Ausbildung eine gute Abstützung und Führung der Scheibe und damit der Mischeinrichtung und gewährleistet eine ausreichende Abdichtung. Der metallische Werkstoff des Ringes ist thermisch belastbar, so daß die Verschiebbarkeit und Abdichtung durch die Hitzeeinwirkung nicht beeinträchtigt werden.The basic idea of the invention is to guide the disc of the mixing device which shuts off the tube cross section in a sealed manner in the tube by means of a cylindrical metallic ring. Due to its essentially cylindrical design, the ring provides good support and guidance for the disk and thus for the mixing device, and ensures adequate sealing. The metallic material of the ring is thermally resilient, so that the displaceability and sealing are not affected by the heat.

Vorzugsweise weist der Ring eine axial durchgehende Trennfuge auf, so daß er einfach auf den Umfang der Scheibe aufgezogen werden kann und sich federnd an die Innenwandung des Rohres anlegt. Es ist ebenso auch ein Aufschrumpfen des Ringes auf die Scheibe möglich.The ring preferably has an axially continuous parting line, so that it can simply be drawn onto the circumference of the disk and resiliently rests against the inner wall of the tube. It is also possible to shrink the ring onto the disc.

Zweckmäßigerweise ist die äußere Mantelfläche des Ringes in ihrem axial mittleren Bereich zylindrisch ausgebildet und gegen das vordere und hintere Ende hin leicht ballig abgerundet. Der zylindrische Bereich gewährleistet eine gute Abdichtung, während die balligen Enden einem Verkanten und Verklemmen bei der axialen Verschiebung entgegenwirken.The outer circumferential surface of the ring is expediently cylindrical in its axially central region and slightly rounded toward the front and rear ends. The cylindrical area ensures a good seal, while the crowned ends counteract tilting and jamming during axial displacement.

Zweckmäßigerweise ist dabei in dem Rohr eine Umfangssicke eingeformt, die von außen an dem Ring anliegt. Diese Umfangssicke bewirkt eine in Axialrichtung schmale abdichtende Berührungszone, wodurch einerseits eine gute Abdichtung gewährleistet ist und andererseits die axiale Verschiebung wenig behindert wird, da auch ein geringes Verkanten der Mischeinrichtung gegenüber dem Rohr bei der axialen Verschiebung möglich ist.A circumferential bead is expediently formed in the tube and bears against the ring from the outside. This circumferential bead creates a narrow sealing contact zone in the axial direction, which on the one hand ensures a good seal and on the other hand little impedes the axial displacement, since a slight tilting of the mixing device relative to the tube is also possible during the axial displacement.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Figur 1
einen Axialschnitt durch eine Mischeinrichtung,
Figur 2
eine Stirnansicht des Ringes und
Figur 3
einen Axialschnitt des Ringes.
The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it
Figure 1
an axial section through a mixing device,
Figure 2
a front view of the ring and
Figure 3
an axial section of the ring.

In Figur 1 ist ein Beispiel einer Mischeinrichtung dargestellt, die in der erfindungsgemäßen Weise abgedichtet axial verstellbar ist. Am stromabseitigen vorderen Ende eines Brennerrohres 10 ist ein Rezirkulationsrohr 12 mittels einer Bajonettverriegelung 14 angesetzt. Im Umfang des Brennerrohres 10 sind angrenzend an das hintere Ende des Rezirkulationsrohres 12 Rezirkulationsöffnungen 16 vorgesehen, durch welche Verbrennungsgase aus dem Feuerraum in die in dem Rezirkulationsrohr 12 brennende Flamme zurückgeführt werden können.FIG. 1 shows an example of a mixing device which is sealed and axially adjustable in the manner according to the invention. A recirculation tube 12 is attached to the downstream front end of a burner tube 10 by means of a bayonet lock 14. In the circumference of the burner tube 10, adjacent to the rear end of the recirculation tube 12, recirculation openings 16 are provided, through which combustion gases can be returned from the combustion chamber into the flame burning in the recirculation tube 12.

Die Mischeinrichtung weist eine den Querschnitt des Brennerrohres 10 sperrende Scheibe 18 auf, die mittig eine Düsenöffnung aufweist, durch welche der Düsenschaft 20 des Brenners hindurchgeführt wird. Der Düsenschaft 20 wird in einer Zentriernabe 22 gehalten, die an der Scheibe 18 befestigt ist. Um die Zentriernabe 22 herum sind Luftdurchtrittsöffnungen in der Scheibe 18 vorgesehen, die einen Luftdurchtritt in eine stromabseitig an der Scheibe 18 angebrachte sich konisch verengende Vorsatzdüse 24 führen. Die Verbrennungsluft wird über das Brennerrohr 10 zugeführt, tritt durch die Luftdurchtrittsöffnungen der Scheibe 18 hindurch in die Vorsatzdüse 24 und wird mit dem über den Düsenschaft 20 zugeführten Brennstoff vermischt der in dem Rezirkulationsrohr 12 brennenden Flamme zugeführt.The mixing device has a disc 18 which blocks the cross section of the burner tube 10 and which has a nozzle opening in the center through which the nozzle shaft 20 of the burner is guided. The nozzle shaft 20 is held in a centering hub 22 which is fastened to the disk 18. Around the centering hub 22 there are air passage openings in the disk 18, which lead an air passage into a conically narrowing attachment nozzle 24 attached to the disk 18 on the downstream side. The combustion air is supplied via the burner tube 10, passes through the air passage openings of the disk 18 into the front nozzle 24 and is mixed with the fuel supplied via the nozzle shaft 20 and fed to the flame burning in the recirculation tube 12.

Zur axialen Verstellung der Mischeinrichtung in dem Brennerrohr 10 sitzt die Scheibe 18 mit ihrem Außenumfang in einem metallischen Ring 26. Der Ring 26 hat im wesentlichen die Form eines kurzen Zylinders, der in Umfangsrichtung durch eine axial durchgehende Trennfuge 28 geteilt ist. Axial mittig ist in der inneren Mantelfläche des Ringes 26 eine in Umfangsrichtung umlaufende Innennut 30 vorgesehen. Mit dieser Innennut 30 umgreift der Ring 26 den Umfangsrand der Scheibe 18.For the axial adjustment of the mixing device in the burner tube 10, the disk 18 is seated with its outer circumference in a metallic ring 26. The ring 26 has essentially the shape of a short cylinder, which is circumferential by an axially continuous one Parting line 28 is divided. An inner groove 30 running circumferentially in the circumferential direction is provided axially in the center of the inner circumferential surface of the ring 26. With this inner groove 30, the ring 26 engages around the peripheral edge of the disk 18.

Die äußere Mantelfläche des Ringes 26 ist im axial mittleren Bereich geradzylindrisch ausgebildet und ist an dem vorderen und hinteren Rand leicht ballig nach innen abgerundet. Das Brennerrohr 10 weist eine leicht nach innen eingedrückte umlaufende Umfangssicke 32 auf. Bei eingesetzter Mischeinrichtung liegt diese Umfangssicke 32 an der äußeren Mantelfläche des Ringes 26 an.The outer circumferential surface of the ring 26 is straight cylindrical in the axially central region and is rounded slightly inward at the front and rear edges. The burner tube 10 has a circumferential bead 32 which is slightly pressed inwards. When the mixing device is used, this peripheral bead 32 rests on the outer circumferential surface of the ring 26.

Bei der Montage wird der Ring 26 mittels der Trennfuge 28 leicht aufgespreizt und kann dadurch über die Scheibe 18 gezogen werden. Sobald die Scheibe 18 in der Innennut 30 liegt, schnappt der Ring 26 aufgrund seiner Elastizität zusammen und umgreift mit seiner Innennut 30 den Umfangsrand der Scheibe 18. Wird die Mischeinrichtung nun in das Brennerrohr 10 eingeschoben, so legt sich der Ring 26 mit seiner äußeren Mantelfläche federnd an der Innenwandung des Brennerrohres 10 an. Die Trennfuge 28 ermöglicht dabei einen elastisch federnden Ausgleich der Durchmessertoleranzen.During assembly, the ring 26 is spread slightly by means of the parting line 28 and can thus be pulled over the disk 18. As soon as the disk 18 lies in the inner groove 30, the ring 26 snaps together due to its elasticity and engages around the peripheral edge of the disk 18 with its inner groove 30 resiliently on the inner wall of the burner tube 10. The parting line 28 enables an elastically resilient compensation of the diameter tolerances.

Die Mischeinrichtung wird in dem Brennerrohr 10 so positioniert, daß der Ring 26 mit dem zylindrischen mittleren Bereich seiner äußeren Mantelfläche an der Umfangssicke 32 anliegt. Damit ist eine axiale Verschiebung der Mischeinrichtung in dem Brennerrohr 10 über eine Strecke möglich, die der axialen Breite des mittleren zylindrischen Bereiches der äußeren Mantelfläche des Ringes 26 entspricht. Die leicht nach innen in den Querschnitt des Brennerrohres 10 vorspringende Umfangssicke 32 und die balligen Enden der äußeren Mantelfläche des Ringes 26 bewirken, daß ein leichtes axiales Verkanten der Achse der Mischeinrichtung gegenüber der Achse des Brennerrohres 10 bei der Verschiebung möglich ist, ohne daß dies zu einem Klemmen führt.The mixing device is positioned in the burner tube 10 in such a way that the ring 26 lies with the cylindrical central region of its outer lateral surface on the peripheral bead 32. An axial displacement of the mixing device in the burner tube 10 is thus possible over a distance which corresponds to the axial width of the central cylindrical region of the outer circumferential surface of the ring 26. The slightly inwardly projecting in the cross section of the burner tube 10 circumferential bead 32 and the crowned ends of the outer circumferential surface of the ring 26 cause a slight axial tilting of the axis of the mixing device relative to the axis of the burner tube 10 during displacement is possible without this leads to a jamming.

Der axiale Abstand der Umfangssicke 32 von den Rezirkulationsöffnungen 16 und die axiale Breite des Ringes 26 sind so aufeinander abgestimmt, daß die vordere Kante des Ringes 26 hinter der Hinterkante der Rezirkulationsöffnungen 16 liegt, wenn die Mischeinrichtung sich in der hinteren Endstellung ihres Verstellweges befindet. Wird die Mischeinrichtung nach vorn geschoben, so deckt der vordere Rand des Ringes 26 zunehmend den Durchtrittsquerschnitt der Rezirkulationsöffnungen 16 ab. Die axiale Breite des zylindrischen mittleren Bereiches der äußeren Mantelfläche des Ringes 26 ist so gewählt, daß der Verstellweg der Mischeinrichtung im wesentlichen der axialen Breite der Rezirkulationsöffnungen 16 entspricht, so daß eine Verstellung bis zu einem vollständigen Verschließen der Rezirkulationsöffnungen 16 möglich ist. Über die axiale Verschiebung der Mischeinrichtung ist eine einfache Einstellung der Rezirkulation auch während des Betriebes möglich.The axial distance of the peripheral bead 32 from the recirculation openings 16 and the axial width of the ring 26 are coordinated with one another such that the front edge of the ring 26 lies behind the rear edge of the recirculation openings 16 when the mixing device is in the rear end position of its adjustment path. If the mixing device is pushed forward, 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 region of the outer circumferential surface of the ring 26 is selected so that the adjustment path of the mixing device essentially corresponds to the axial width of the recirculation openings 16, so that adjustment is possible until the recirculation openings 16 are completely closed. A simple adjustment of the recirculation is also possible during operation via the axial displacement of the mixing device.

Die Verwendung des Ringes 26 sowohl zur Führung der Mischeinrichtung bei der axialen Verschiebung als auch zur Abdichtung der Mischeinrichtung gegen das Brennerrohr 10 reduziert die für die Mischeinrichtung benötigten Teile und damit die Herstellungs- und Montagekosten. Da der Ring 26 aus einem metallischen Werkstoff besteht, ist er thermisch hoch belastbar, so daß die Anordnung der Dichtung mittels des Ringes 26 im flammennahen Bereich der Mischeinrichtung möglich ist. Wird der Ring 26 gleichzeitig auch als Verschlußorgan für die Rezirkulationsöffnungen 16 verwendet, so kann auch hier nochmals ein weiteres Konstruktionsteil eingespart werden.The use of the ring 26 both for guiding the mixing device during the axial displacement and for sealing the mixing device against the burner tube 10 reduces the parts required for the mixing device and thus the manufacturing and assembly costs. Since the ring 26 consists of a metallic material, it can withstand high thermal loads, so that it is possible to arrange the seal by means of the ring 26 in the area of the mixing device near the flame. If the ring 26 is also used at the same time as a closure member for the recirculation openings 16, a further structural part can be saved here as well.

BezugszeichenlisteReference list

1010th
BrennerrohrBurner tube
1212th
RezirkulationsrohrRecirculation pipe
1414
Bajonett-VerriegelungBayonet lock
1616
RezirkulationsöffnungRecirculation opening
1818th
Scheibedisc
2020th
DüsenschaftNozzle shaft
2222
ZentriernabeCentering hub
2424th
VorsatzdüseAttachment nozzle
2626
Ringring
2828
TrennfugeParting line
3030th
InnennutInner groove
3232
UmfangssickePeripheral bead

Claims (6)

Mischeinrichtung für einen Brenner, mit einem Rohr, in welchem die Mischeinrichtung axial verstellbar angeordnet ist, mit einer Dichtung, die die Mischeinrichtung an ihrem Außenumfang gegen das Rohr abdichtet, und mit einer senkrecht zur Rohrachse in dem Rohr angeordneten Scheibe der Mischeinrichtung, dadurch gekennzeichnet, daß die Dichtung ein im wesentlichen zylindrischer metallischer Ring (26) ist, der mit seiner äußeren Mantelfläche abdichtend und verschiebbar an der Innenwandung des Rohres (10) anliegt und in dessen innere Mantelfläche die Scheibe (18) eingesetzt ist.Mixing device for a burner, with a tube in which the mixing device is arranged axially adjustable, with a seal that seals the mixing device on its outer circumference against the tube, and with a disk of the mixing device arranged in the tube perpendicular to the tube axis, characterized in that that the seal is a substantially cylindrical metallic ring (26) which rests with its outer surface sealingly and displaceably against the inner wall of the tube (10) and in the inner surface of which the disc (18) is inserted. Mischeinrichtung nach Anspruch 1 dadurch gekennzeichnet, daß der Ring (26) in seiner inneren Mantelfläche eine umlaufende Innennut (30) aufweist, in welche die Scheibe (18) mit ihrem Umfangsrand eingesetzt ist.Mixing device according to claim 1, characterized in that the ring (26) has a circumferential inner groove (30) in its inner circumferential surface, into which the disc (18) is inserted with its peripheral edge. Mischeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ring (26) eine axial durchgehende Trennfuge (28) aufweist.Mixing device according to claim 1 or 2, characterized in that the ring (26) has an axially continuous parting line (28). Mischeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die äußere Mantelfläche des Ringes (26) in einem axial mittleren Bereich geradzylindrisch und an den beiden axialen Endbereichen leicht ballig ausgebildet ist.Mixing device according to one of claims 1 to 3, characterized in that the outer lateral surface of the ring (26) is straight cylindrical in an axially central region and slightly spherical at the two axial end regions. Mischeinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Rohr (10) eine nach innen vorspringende Umfangssicke (32) aufweist, an welcher der Ring (26) mit seiner äußeren Mantelfläche anliegt.Mixing device according to one of claims 1 to 4, characterized in that the tube (10) has an inwardly projecting peripheral bead (32) against which the ring (26) rests with its outer lateral surface. Mischeinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Rohr (10) in seinem Umfang wenigstens eine Rezirkulationsöffnung (16) aufweist und daß die rezirkulationsöffnung (16) bei der axialen Verschiebung der Mischeinrichtung verstellbar durch den Ring (26) verschlossen wird.Mixing device according to one of claims 1 to 5, characterized in that the tube (10) has at least one recirculation opening (16) in its circumference and that the recirculation opening (16) is closed adjustably by the ring (26) during the axial displacement of the mixing device .
EP96116865A 1995-11-29 1996-10-21 Mixing device for burner Expired - Lifetime EP0777083B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29518918U DE29518918U1 (en) 1995-11-29 1995-11-29 Mixing device for a burner
DE29518918U 1995-11-29

Publications (3)

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

Family

ID=8016056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116865A Expired - Lifetime EP0777083B1 (en) 1995-11-29 1996-10-21 Mixing device for burner

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1568941A1 (en) * 2004-02-28 2005-08-31 BBT Thermotechnik GmbH Mixing device for an oil or gas forced-draught burner

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29518919U1 (en) * 1995-11-29 1996-01-25 MEKU Metallverarbeitungs-GmbH, 78083 Dauchingen Mixing device for a burner
DE202006013853U1 (en) * 2006-09-07 2006-12-21 Meku Metallverarbeitungs Gmbh & Co. Kg Mixing device for burner has separator axially adjustable in combustion tube and sealed against combustion tube by guide ring

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9212924U1 (en) 1992-09-25 1992-11-26 MEKU Metallverarbeitungs-GmbH, 7735 Dauchingen Mixing device for a burner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992020964A1 (en) * 1991-05-24 1992-11-26 Sci Mercimmo Method of burning fuel to produce low pollutant emissions
DE4209221A1 (en) * 1992-03-21 1993-09-23 Deutsche Forsch Luft Raumfahrt LOW-NITROXIDE BURNER
DE4244400C2 (en) * 1992-12-29 1999-02-04 Deutsch Zentr Luft & Raumfahrt Burners for hot gas generation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9212924U1 (en) 1992-09-25 1992-11-26 MEKU Metallverarbeitungs-GmbH, 7735 Dauchingen Mixing device for a burner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1568941A1 (en) * 2004-02-28 2005-08-31 BBT Thermotechnik GmbH Mixing device for an oil or gas forced-draught burner

Also Published As

Publication number Publication date
EP0777083A3 (en) 1998-08-19
DE29518918U1 (en) 1996-01-25
ATE202836T1 (en) 2001-07-15
DE59607211D1 (en) 2001-08-09
EP0777083B1 (en) 2001-07-04

Similar Documents

Publication Publication Date Title
DE2438845C3 (en) Annular combustion chamber for a gas turbine engine
DE3113381A1 (en) FUEL NOZZLE GUIDE FOR A RING BURNER
DE2727795A1 (en) COMBUSTION CHAMBER FOR A GAS TURBINE
EP0777084B1 (en) Mixing device for burner
DE7708863U1 (en) Seal for the piston rod of a shock absorber
EP0777083A2 (en) Mixing device for burner
EP1898152B1 (en) Mixing device for a burner
DE4008692C2 (en) Mixing device for forced draft burners
DE4244400C2 (en) Burners for hot gas generation
DE2943137A1 (en) WHEEL COVER, ESPECIALLY FOR THE WHEELS OF PASSENGER CARS
EP0088933A1 (en) Gas turbine combustion chamber
DE3739513C2 (en) Cassette seal
EP0379089A2 (en) Hydraulic telescopic damper
DE102014109002A1 (en) Valve for an exhaust system of an internal combustion engine
DE4017819A1 (en) Ball valve controlling gas flow in IC engine cylinder head - has the valve ball to combustion chamber sealing ring sealed in its groove by further flexible seal
AT504732B1 (en) BURNER
DE19608771A1 (en) Guide for piston and cylinder unit, especially for shock absorbers
DE4447474A1 (en) Butterfly valve
EP0645524B1 (en) Valve stem seal to put on a valve guide hold in the cylinder head of an internal combustion engine
EP1382808B1 (en) Filler tube assembly particularly for engine oil tank
DE102004009787B3 (en) Mixing device for oil or gas fan burner has burner tube with endface against surface on endface of support tube
DE69300890T2 (en) Burner head for gas burners and burners with such a head.
DE10349836B3 (en) Mixer for air and oil or gas in a burner has throttle formed by annular gap
DE10156195B4 (en) Cover arrangement for a component opening
DE29618399U1 (en) Air nozzle

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR IT LI

17P Request for examination filed

Effective date: 19980722

17Q First examination report despatched

Effective date: 19991115

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MEKU VERWALTUNGSGESELLSCHAFT MBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI

REF Corresponds to:

Ref document number: 202836

Country of ref document: AT

Date of ref document: 20010715

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: DIPL.-ING. ETH H. R. WERFFELI PATENTANWALT

Ref country code: CH

Ref legal event code: EP

ITF It: translation for a ep patent filed

Owner name: FIAMMENGHI - DOMENIGHETTI

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59607211

Country of ref document: DE

Date of ref document: 20010809

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20151128

Year of fee payment: 20

Ref country code: CH

Payment date: 20151026

Year of fee payment: 20

Ref country code: IT

Payment date: 20151026

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20151026

Year of fee payment: 20

Ref country code: AT

Payment date: 20151022

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59607211

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 202836

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161021