EP0660040A1 - Brennerkopf für Brenner mit niedriger Schadstoffemission und Kessel versehen mit solchen Brenner - Google Patents

Brennerkopf für Brenner mit niedriger Schadstoffemission und Kessel versehen mit solchen Brenner Download PDF

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Publication number
EP0660040A1
EP0660040A1 EP94402948A EP94402948A EP0660040A1 EP 0660040 A1 EP0660040 A1 EP 0660040A1 EP 94402948 A EP94402948 A EP 94402948A EP 94402948 A EP94402948 A EP 94402948A EP 0660040 A1 EP0660040 A1 EP 0660040A1
Authority
EP
European Patent Office
Prior art keywords
burner
rod
combustion head
tubular surface
head according
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.)
Withdrawn
Application number
EP94402948A
Other languages
English (en)
French (fr)
Inventor
Dominique Walter
Anne-Béatrice Pernaud
Dominique Teillay
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Publication of EP0660040A1 publication Critical patent/EP0660040A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • 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, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74—Preventing flame lift-off
    • 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, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts

Definitions

  • the invention relates to a combustion head for a burner, in particular for a gas burner supplied with combustible gas and combustion air.
  • an additional characteristic of the invention provides that the coiled rod defining the tubular surface in question will then be hollow, so as to constitute a clean tube to be connected, at one end, to a supply of “cooling” fluid for the flames (such as water) and, at the opposite end, to a discharge of said fluid.
  • the rod of this combustion head will advantageously be wound in a helix along the axis of the tubular surface which it defines.
  • this tubular surface will advantageously contain an inner sieve itself tubular, of parallel axis. to that of said surface, the mixture to be ignited passing through this sieve, which may in particular have a conical shape with close meshes.
  • the invention also relates to a compact boiler comprising a heat exchange chamber in which winds a line suitable for conveying a fluid to be heated (such as water) and in which is disposed the burner in question, this burner being able to be very particularly housed in the middle of the pipe coils, for example substantially along the axis of such a pipe wound substantially helically in said chamber.
  • a fluid to be heated such as water
  • a burner has been identified in its entirety 1, in this case a gas burner of the blown air type, with total premix and with blue flame (to differentiate it from radiant burners).
  • the burner 1 comprises a combustion head 3 comprising a rod 5 wound here in a helix with a longitudinal axis 7 to define a tubular surface 9, of constant diameter D.
  • 5a and 5b represent the two opposite winding ends of the rod 5.
  • the helical winding 3 is closed by a solid cap 11 welded, while at its lower end (known as INF), the propeller is fixedly connected to an annular base 13 itself fixed to a box of distribution 15 with which it communicates, so that a suitable gas mixture can penetrate axially inside the propeller 3.
  • the gas distribution box 15 On the side of its upstream end 15a, the gas distribution box 15 is in fluid communication with a fan 17 allowing the supply of blown air, as well as with a fuel gas supply line 19, the arrows 21 and 23 representing respectively the combustible gas and the air directed to the distribution box or mixing chamber 15.
  • an ignition electrode 29 disposed nearby, outside of this propeller, substantially parallel to its axis 7, has been provided, as in the present case that an electrode ionization 31 capable of detecting the absence or presence of flames, the two electrodes 29, 31 being of course connected to an appropriate electrical supply.
  • the mixture leaving through the spaces between the turns will it be able to be ignited, so that the flames are distributed peripherally, outside the tubular surface defined by the propeller 3, while being attached to it .
  • the space or internal volume 33 of the latter (see FIG. 2) will preferably contain a tubular screen 35, for example metallic, advantageously with tight meshes and arranged substantially along axis 7.
  • This tubular screen may extend over substantially the entire length of the combustion head 3.
  • It may in particular have a conical or frustoconical shape and be made of stainless steel.
  • the rod 5 it can be made of refractory material.
  • a metallic hollow rod capable of forming, as in the example in FIG. 2, a tube 5 ′ in a helix whose opposite ends 5 ′ a and 5 ′ b will then be suitable for being connected respectively to a supply and to an evacuation of heat-transfer fluid, such as water, the fluid thus being able (in a preferred embodiment) to enter the propeller 3 through its base closest to the distribution chamber 15, via the intake pipe 34, and exit at the top of the propeller to be recycled via a return section 36 parallel to the axis 7.
  • heat-transfer fluid such as water
  • the rod (5 or 5 ') may have qualities of spring (stainless steel for example) in order to promote the operating conditions of the burner and its modulation, the burner then being equipped with means for bringing together or separating the turns suitable for varying the pitch of these turns, that is to say the passage section of the space in a helix 25.
  • these approximation or spacing means 37, 39, 41, 42 may consist of a metal rod 37 screwed axially in the chamber 15 in a thread 38 and axially passing through the head 3 over the entire length, to end with a tip 39 of reduced diameter passing through an axial opening 41 of the cap 11 and associated with a washer 42 fixed on it to allow acting on the cap (in compression of the turns), the tip comprising for this purpose a slot 44 for a screwdriver.
  • the burner of FIG. 2 can be made from a tube diameter 5 ′ of the order of 6 mm (internal diameter of approximately 4 mm), this tube being rolled up to constitute a propeller of approximately 40 mm of outside diameter ( D ), and this with a length at rest along the axis 7 (contiguous turns) of approximately 160 mm, the material used being stainless steel.
  • Such a burner can have an operating range of at least about 11 to 30 kW, i.e. a power modulation of 3: 1 (surface power: of the order of 450 to 1,350 kW / m2).
  • the burner is installed inside the heat exchange chamber, or combustion chamber, 43 of a boiler 45.
  • the fluid to be heated arrives via a line 47 and leaves in a line 49 after passing inside the chamber 43, essentially along a coil 51 consisting of a helical winding d 'vertical axis.
  • the burner 1 Inside the chamber 43, and more particularly coaxially with the propeller 51 thus formed, is arranged the burner 1, the bypass connections 34 and 36 of the helical tube are connected in parallel, respectively on the supply conduits 47 and discharge 49, of larger diameter.
  • FIG. 4 the combustion head of a burner 1 ′ has been shown, the rod or tube 55 of which constitutes its tubular flame catching surface, here has a configuration wound with meanders having rectilinear sections 57, with axis 59 parallel to that of the defined tubular surface 60, two successive parallel meanders being joined at one or the other of the axial ends of the surface by elbows 61, so that the tube 55 thus has a series of successive zigzags, until the tube closes on itself to form the desired tubular surface of axis 59.
  • flames such as 63 may then develop along the axial slots 65 separating two successive rectilinear zones 57.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
EP94402948A 1993-12-22 1994-12-20 Brennerkopf für Brenner mit niedriger Schadstoffemission und Kessel versehen mit solchen Brenner Withdrawn EP0660040A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315490 1993-12-22
FR9315490A FR2714150B1 (fr) 1993-12-22 1993-12-22 Tête de combustion pour brûleur à faible émission de polluants et chaudière équipée d'un tel brûleur..

Publications (1)

Publication Number Publication Date
EP0660040A1 true EP0660040A1 (de) 1995-06-28

Family

ID=9454260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402948A Withdrawn EP0660040A1 (de) 1993-12-22 1994-12-20 Brennerkopf für Brenner mit niedriger Schadstoffemission und Kessel versehen mit solchen Brenner

Country Status (2)

Country Link
EP (1) EP0660040A1 (de)
FR (1) FR2714150B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019697A1 (de) * 1994-12-20 1996-06-27 Robert Bosch Gmbh Heizgerät
EP1160521A3 (de) * 2000-05-27 2003-05-07 VIESSMANN WERKE GmbH & CO. Heizkessel
CN102829491A (zh) * 2012-08-28 2012-12-19 程超 多功能一体化农作物混合压缩环保节能炉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405444B (de) * 1996-01-30 1999-08-25 Vaillant Gmbh Heizeinrichtung mit einem im wesentlichen zylinderförmigen brenner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE242368C (de) *
FR685025A (fr) * 1928-11-20 1930-07-03 Premix Gas Plants Ltd Perfectionnements aux appareils pour la combustion de mélanges gazeux
US2625994A (en) * 1946-01-09 1953-01-20 Allis Chalmers Mfg Co Gas burner formed by stacked annular members
US3514833A (en) * 1968-04-15 1970-06-02 Us Army Method of making a slotted gas burner head
GB2071839A (en) * 1980-03-17 1981-09-23 Sdecc Burner with fan-assisted premixing of air and gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE242368C (de) *
FR685025A (fr) * 1928-11-20 1930-07-03 Premix Gas Plants Ltd Perfectionnements aux appareils pour la combustion de mélanges gazeux
US2625994A (en) * 1946-01-09 1953-01-20 Allis Chalmers Mfg Co Gas burner formed by stacked annular members
US3514833A (en) * 1968-04-15 1970-06-02 Us Army Method of making a slotted gas burner head
GB2071839A (en) * 1980-03-17 1981-09-23 Sdecc Burner with fan-assisted premixing of air and gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019697A1 (de) * 1994-12-20 1996-06-27 Robert Bosch Gmbh Heizgerät
EP1160521A3 (de) * 2000-05-27 2003-05-07 VIESSMANN WERKE GmbH & CO. Heizkessel
CN102829491A (zh) * 2012-08-28 2012-12-19 程超 多功能一体化农作物混合压缩环保节能炉

Also Published As

Publication number Publication date
FR2714150A1 (fr) 1995-06-23
FR2714150B1 (fr) 1996-02-02

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