EP0537491A2 - Dispositif de mélange pour brûleur à huile - Google Patents

Dispositif de mélange pour brûleur à huile Download PDF

Info

Publication number
EP0537491A2
EP0537491A2 EP92115884A EP92115884A EP0537491A2 EP 0537491 A2 EP0537491 A2 EP 0537491A2 EP 92115884 A EP92115884 A EP 92115884A EP 92115884 A EP92115884 A EP 92115884A EP 0537491 A2 EP0537491 A2 EP 0537491A2
Authority
EP
European Patent Office
Prior art keywords
baffle plate
inner tube
mixing device
passage
tube
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
EP92115884A
Other languages
German (de)
English (en)
Other versions
EP0537491B1 (fr
EP0537491A3 (en
Inventor
Alois STÖCKL
Werner Kuprian
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.)
A Schwarz and Co
Original Assignee
A Schwarz and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3526384&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0537491(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by A Schwarz and Co filed Critical A Schwarz and Co
Publication of EP0537491A2 publication Critical patent/EP0537491A2/fr
Publication of EP0537491A3 publication Critical patent/EP0537491A3/de
Application granted granted Critical
Publication of EP0537491B1 publication Critical patent/EP0537491B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/402—Mixing chambers downstream of the nozzle
    • 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
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/406—Flame stabilising means, e.g. flame holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/11401—Flame intercepting baffles forming part of burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/11402—Airflow diaphragms at burner nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/11403—Flame surrounding tubes in front of burner nozzle

Definitions

  • the invention relates to a mixing device for oil burners with a mixing tube with an end passage opening, which tapers towards the front end, an annular baffle plate arranged in the flow direction in front of the passage with radial slots and an inner tube in front, which is in the form of a truncated cone and has a rear end wall and a front passage in which a pressure atomizing nozzle and an ignition electrode are arranged.
  • the object of the invention is to improve a mixing device of this type in such a way that it is characterized by low NOx formation.
  • Such nitrogen oxides are formed during the combustion of fossil fuels in the flame and the high-temperature zone surrounding it. Through partial oxidation of the molecular nitrogen in the combustion air and the chemically bound organic nitrogen in the fuel.
  • the object of the invention is achieved in that the inner tube abuts the baffle plate with its mouth and has an end wall at the rear.
  • the inner tube is directly connected to the baffle plate, for example soldered.
  • the inner tube is provided with a pilot air duct, the pilot air duct which runs along generatrices of the truncated cone being formed by a groove pressed into the inner tube with a cover cap soldered or welded on.
  • the inside air can be throttled to almost zero.
  • An embodiment of the invention provides that the baffle plate is provided with punched baffles at the slots, which protrude in the direction of flow.
  • the guide plates lie at an acute angle of preferably ⁇ 30 ° to the level of the baffle plate.
  • FIG. 1 shows a longitudinal section through a mixing device according to the invention
  • FIG. 2 shows the inner tube with the pilot air duct
  • FIG. 3 shows an end view of the baffle plate.
  • the mixing device has a mixing tube 1 which is cylindrical in the rear area and conical in the front area.
  • a cylindrical recirculation tube connects to the conical region 1 ' 2, which is firmly connected to the mixing tube 1 via struts.
  • the mixing tube 1 has a front passage 3 at the front.
  • a pressure atomizing nozzle 4 which is connected to an oil pressure line 5.
  • the pressure atomizing nozzle 4 can be carried by a nozzle assembly 6 which is provided with an oil preheater.
  • the pressure atomizing nozzle 4 is surrounded by an inner tube 7 which, like the mixing tube 1, has a front conical or frustoconical section 7 '. At the rear, the inner tube 7 is closed off by a flat wall 8. Two ignition electrodes 9 protrude through the wall 8. In the case of large burner outputs, the wall can be provided with additional bores, as indicated by the dash-dotted line ZB, in order to allow a throttled air supply. In general, however, the inner tube 7 is closed except for the passage 15 and the pilot air duct 16.
  • the inner end of the inner tube 7 lies directly against a baffle plate 10.
  • the baffle plate 10 is ring-shaped and has a cylindrical jacket 11.
  • the guide plates 13 are preferably inclined at an angle of ⁇ 30 ° to the plane plane of the baffle plate 10.
  • the inner tube 7 is soldered or welded to the baffle plate 10 at its front end.
  • the slots 12 protrude into the area of the outlet 15 of the central tube 7.
  • the inner tube 7 is provided with an ignition air duct 16 in its frustoconical region 7 '.
  • the pilot air channel 16 is formed by an annular channel 17 which is pressed into the sheet metal of the inner tube 7 and is covered by a cover cap 18.
  • the cover cap 18 is welded or soldered to the inner tube 7 or its frustoconical region 7 '.
  • Another air flow c reaches the flash point via the space between the baffle plate 10 and the conical region of the mixing tube 1.
  • Another air flow d leads via the pilot air duct through the passage 15 to the flash point F.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Spray-Type Burners (AREA)
EP92115884A 1991-10-14 1992-09-17 Dispositif de mélange pour brûleur à huile Revoked EP0537491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0203491A AT401288B (de) 1991-10-14 1991-10-14 Mischeinrichtung für ölbrenner
AT2034/91 1991-10-14

Publications (3)

Publication Number Publication Date
EP0537491A2 true EP0537491A2 (fr) 1993-04-21
EP0537491A3 EP0537491A3 (en) 1993-06-30
EP0537491B1 EP0537491B1 (fr) 1997-04-23

Family

ID=3526384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115884A Revoked EP0537491B1 (fr) 1991-10-14 1992-09-17 Dispositif de mélange pour brûleur à huile

Country Status (3)

Country Link
EP (1) EP0537491B1 (fr)
AT (2) AT401288B (fr)
DE (1) DE59208382D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025798A1 (fr) * 1993-04-30 1994-11-10 Jin Min Choi Dispositif de diffusion tourbillonnaire d'air de combustion pour turbobruleur
US6579086B2 (en) * 1997-03-24 2003-06-17 R.W. Beckett Corporation Process and fuel burner with exhaust-gas recirculation
EP1916475A3 (fr) * 2006-10-19 2008-12-10 Robert Bosch GmbH Mélangeur de brûleur à gas ou à huile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2553953C2 (de) * 1975-12-01 1978-04-20 Max Weishaupt Gmbh, 7959 Schwendi Brenner für flüssige Brennstoffe
DE2704884A1 (de) * 1977-02-05 1978-08-10 Shell Ag Brenner
DE3919797A1 (de) * 1989-06-16 1991-01-03 Bernhard W Braukmann Oelbrenner
FR2648897A1 (fr) * 1989-06-22 1990-12-28 Mueller Rudolf Bruleur a flux torique-cyclonique pour chaudiere a combustible liquide et gazeux
DE8909202U1 (de) * 1989-07-29 1989-09-14 Körting Hannover AG, 3000 Hannover Mischeinrichtung für Gebläsebrenner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025798A1 (fr) * 1993-04-30 1994-11-10 Jin Min Choi Dispositif de diffusion tourbillonnaire d'air de combustion pour turbobruleur
US6579086B2 (en) * 1997-03-24 2003-06-17 R.W. Beckett Corporation Process and fuel burner with exhaust-gas recirculation
EP1916475A3 (fr) * 2006-10-19 2008-12-10 Robert Bosch GmbH Mélangeur de brûleur à gas ou à huile

Also Published As

Publication number Publication date
DE59208382D1 (de) 1997-05-28
ATE152230T1 (de) 1997-05-15
EP0537491B1 (fr) 1997-04-23
ATA203491A (de) 1995-12-15
EP0537491A3 (en) 1993-06-30
AT401288B (de) 1996-07-25

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