EP1026445A1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

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Publication number
EP1026445A1
EP1026445A1 EP99201089A EP99201089A EP1026445A1 EP 1026445 A1 EP1026445 A1 EP 1026445A1 EP 99201089 A EP99201089 A EP 99201089A EP 99201089 A EP99201089 A EP 99201089A EP 1026445 A1 EP1026445 A1 EP 1026445A1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
channel
gas burner
center line
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Withdrawn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
EP99201089A
Other languages
German (de)
English (en)
Inventor
Kleis Van Der Giesen
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.)
Dw Clysan Bv
Original Assignee
Dw Clysan Bv
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 Dw Clysan Bv filed Critical Dw Clysan Bv
Priority to EP99201089A priority Critical patent/EP1026445A1/fr
Publication of EP1026445A1 publication Critical patent/EP1026445A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • 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
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • F23D2212/00—Burner material specifications
    • F23D2212/10—Burner material specifications ceramic
    • F23D2212/103—Fibres

Definitions

  • the invention relates to a gas burner comprising a burner housing having a mounting flange by means of which the gas burner can be mounted on a heating boiler, the burner housing defining a channel, into which channel a gas supply and a combustion air supply open, the gas burner further comprising a fan for the forced supply of combustion air to the channel.
  • Such a gas burner also referred to by the term 'externally mounted burner', is known from EP-A-0 612 959. It is a so-called modulable burner, since it cannot only burn on full load, but also on partial load, due to the presence of a gas control valve and an air control valve, if present, or due to the presence of a pneumatic and/or electric gas/air mixture controller.
  • the full-load capacity of the burners is generally within the range of about 100 to 5000 kW.
  • Such gas burners can be mounted on different types of heating boilers which are often produced by different manufacturers. The gas burner are bought by a boiler manufacturer and mounted, by means of the mounting flange, on the boiler produced by the boiler manufacturer. This entails a specific problem, viz.
  • the burners must exhibit a good combustion process, at full load as well as partial load. 'Good combustion process' should be understood to mean a combustion process in which little NO x (less than 40 mg/m 3 converted to 3% O 2 ) and CO are produced and which, moreover, proceeds with the least noise production.
  • the object of the invention is to provide a gas burner which does meet the above requirements and wishes.
  • the gas burner of the type described in the preamble is characterized by a burner head mounted in/on a downstream end of the channel, which burner head comprises a burner plate arranged concentrically relative to the longitudinal center line of the channel and at least one burner ring arranged concentrically relative to the burner plate.
  • the burner head Due to the presence of a thus designed burner head, an excellent combustion process is obtained which proceeds without resonance in various types of boilers. This is not only favorable for the combustion, the noise production of the burner is also minimized thereby.
  • the burner head provided with a burner plate and at least one burner ring arranged concentrically relative to the burner plate, a very good, even flame is obtained which, moreover, is properly cooled at the flame root by the burner plate and the burner ring, yielding flue gases having a low NO x content.
  • a significant advantage of such burner head is further that it can be manufactured in a highly economical manner.
  • the burner head i.e. the burner plate and the at least one burner ring, may be manufactured from any material that is resistant to a temperature of about 850°C. Preferably, it is a material of low heat conductivity and zero electric conductivity, and that can easily be machined. A relatively cheap material that can be used for this is an insulation material having ceramic fiber.
  • the burner ring and/or the burner plate comprise reduced pressure faces extending perpendicularly to the longitudinal center line of the channel.
  • Such reduced pressure faces provide a post-mixing of the combustion air with the gaseous fuel and moreover contribute to a better flame stability.
  • the gas burner comprises at least one rectangular gas chamber into which the gas supply opens, which gas chamber is arranged downstream of the fan in the channel, while in the or each rectangular chamber there are provided gas supply openings extending substantially in a direction perpendicular to the longitudinal center line of the channel.
  • the static pressure on the gas supply openings is so slight, due to the high flow rate of the combustion air along the gas supply openings, that in spite of the low supply gas pressure, the required burner capacity is nevertheless realized. It is thus possible to connect the gas burner to a gas network with a gas pressure of about 20 mbar. Because the gas/air mixture is formed only downstream of the fan, the chance of explosion caused by sparking in the fan is nil. After all, no combustible mixture is present at the fan.
  • fixed blades may be provided in the channel, downstream of the at least one gas chamber and upstream of the burner head, which blades impart a swirling flow pattern to the gas/air mixture.
  • a pressure distributor may be provided in the channel, downstream of the blades and upstream of the burner head.
  • the exemplary embodiment of a gas burner according to the invention shown in Figs. 1 and 2 comprises a burner housing 1 having a mounting flange 2 by means of which the gas burner can be mounted on a heating boiler.
  • the burner housing 1 defines at least a part of a channel K, into which channel K a gas supply 6 and a combustion air supply 7 open.
  • the gas burner further comprises a gas supply control valve 8 and a fan 10 for the forced supply of combustion air to the channel K.
  • the gas burner comprises a burner head 11 mounted in a downstream end 14 of the channel K.
  • the burner head 11 comprises at least one burner ring lla, arranged concentrically relative to the longitudinal center line of the channel K, and a burner plate 11b arranged concentrically relative to the longitudinal center line, which burner plate in the present exemplary embodiment is circular.
  • Each rectangular gas chamber 21 is provided with gas supply openings 24 extending substantially in a direction perpendicular to the longitudinal center line of the channel K.
  • the gas chambers 21 are in fluid connection with the gas supply 6.
  • an air distribution plate (not shown) may be provided in the channel K, which air distribution plate is provided with a number of bores. These bores are preferably arranged in such a manner that the combustion air flows neatly distributed along the rectangular gas chambers 21.
  • blades 31 are provided in the channel K, downstream of the gas chambers 21 and upstream of the burner head 11.
  • the fixedly arranged blades 31 include an angle of 60° with the longitudinal center line of the channel K.
  • the blades 31 impart a rotating flow pattern to the gas/air mixture.
  • a pressure distributor in the channel K, downstream of the blades 31 and upstream of the burner head 11.
  • the pressure distributor may be designed as a number of cylinders of different diameters, arranged concentrically relative to each other and to the longitudinal center line of the channel K.
  • the fan 10 is designed as a radial impeller blade wheel 10 driven by a motor 28.
  • the radial impeller blade wheel 10 is arranged in a volute 4 provided with a substantially cylindrical impeller chamber 16 having a substantially cylindrical chamber wall 17 and two facing end walls 18, 19.
  • This output pipe 5 defines the upstream part of the channel K.
  • the end wall 18 is provided with a passage opening 20 located at the level of a rotational center line L of the radial impeller blade wheel 10.
  • an input pipe 3 is provided, extending substantially perpendicularly to the relevant end wall 18.
  • the input pipe 3 defines the air supply 7.
  • an air supply control valve 9 is arranged in the input pipe 3.
  • the two control valves 8, 9 are interconnected via a system of rods 30, so that the positions of the air supply control valve 9 and the gas supply control valve 8 are always adjusted to each other.
  • the position of the two valves 8, 9 is controlled by means of a servomotor 29 controlling, for instance, the position of the curve disk. It is observed that the gas supply control valve 8, the air supply control valve 9, the system of rods 30 and the servomotor 29 can be omitted if a pneumatic or electric gas/air mixture control is utilized.
  • a burner head 11 is provided at the downstream end 14 of the channel K.
  • the burner head 11 comprises a burner plate 11b and at least one burner ring lla which are each provided with reduced pressure faces 12 at an outer and, in so far present, an inner circumferential edge thereof.
  • the burner head 11 is manufactured from readily processable material that is resistant to a temperature of at least about 850°C and that is of low heat conductivity and zero electric conductivity.
  • a material meeting these properties is, for instance, ceramic material.
  • a material is used which is presently commercially available as insulation material provided with ceramic fiber.
  • the reduced pressure faces 12 in fact serve as stop shoulder for the gas/air mixture flowing past.
  • the gas/air mixture touches the reduced pressure faces 12 it is caused to swirl.
  • the gas/air mixture acquires a higher flow rate. This rate drops immediately after the reduced pressure faces 12 have been passed.
  • the gas/air mixture stabilizes on the downstream side of the reduced pressure faces 12 of the at least one burner ring 11a and the burner plate 11b. Due to this stabilization, a highly stable flame is obtained without this flame being "blown off”.
  • the reduced pressure faces 12 also effect a certain after-mixing of the gas/air mixture, to produce a very low NO x emission.
  • the open passage between the burner ring(s) and the burner plate be chosen correctly, so that the flow rate of the gas/air mixture is under all conditions greater than the combustion rate of the gas used, to prevent flame flashback.
  • the open passage i.e. the available flow-through area, can vary with the gas used. A higher combustion rate of the gas used requires a smaller open passage.
  • the flow resistance of a thus designed burner head 11 is such that a fan 10 of conventional capacity can be employed.
  • the channel K is bounded by different parts.
  • the burner housing 1 comprises a swivel flange 26. Due to the presence of this swivel flange 26, the fan 10 with the volute 4 can be folded away, allowing a maintenance mechanic access to the interior of the channel K, for cleaning or otherwise servicing or replacing the gas chambers 21, the blades 31, the air distribution plate 13, if any, and the inside of the burner head 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP99201089A 1999-02-08 1999-04-06 Brûleur à gaz Withdrawn EP1026445A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99201089A EP1026445A1 (fr) 1999-02-08 1999-04-06 Brûleur à gaz

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99200363 1999-02-08
EP99200363 1999-02-08
EP99201089A EP1026445A1 (fr) 1999-02-08 1999-04-06 Brûleur à gaz

Publications (1)

Publication Number Publication Date
EP1026445A1 true EP1026445A1 (fr) 2000-08-09

Family

ID=26153257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99201089A Withdrawn EP1026445A1 (fr) 1999-02-08 1999-04-06 Brûleur à gaz

Country Status (1)

Country Link
EP (1) EP1026445A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009154603A1 (fr) * 2008-06-18 2009-12-23 Mestek, Inc. Brûleur numérisé à grande marge de réglage
CN102269407A (zh) * 2011-06-28 2011-12-07 无锡中阳新能源科技有限公司 高效金属纤维表面燃烧装置和智能控制器及其控制方法
US8512035B2 (en) 2010-03-09 2013-08-20 Honeywell Technologies Sarl Mixing device for a gas burner
US8668491B2 (en) 2009-10-06 2014-03-11 Honeywell Technologies Sarl Regulating device for gas burners
CN103953928A (zh) * 2014-05-06 2014-07-30 邓延鸿 一种预混燃气正压燃烧的节能燃烧器和蒸汽发生器
US20150153066A1 (en) * 2013-12-04 2015-06-04 Victory Energy Operations. L.L.C. Method of providing heat to a heat exchanger apparatus via a burner
EP2340399A4 (fr) * 2008-07-25 2017-03-15 Burner Systems International, Inc. Amélioration de brûleur
CN106765090A (zh) * 2016-12-23 2017-05-31 海湾环境科技（北京）股份有限公司 燃烧器
CN111765458A (zh) * 2020-07-02 2020-10-13 咸宁南玻玻璃有限公司 一种浮法灰玻生产线熔窑的天然气喷枪燃烧控制系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652806A1 (de) * 1976-11-20 1978-05-24 Klaus Dipl Ing Matzke Brenner mit keilfoermigem staukoerper
FR2481415A1 (fr) * 1980-04-23 1981-10-30 Fulpin Jacques Bruleur a gaz
EP0190660A2 (fr) * 1985-02-02 1986-08-13 Hans Dr. Viessmann Brûleur à air soufflé sous faible pression
EP0223691A1 (fr) * 1985-11-06 1987-05-27 Gaz De France Brûleur à gaz à air soufflé
DE3902025A1 (de) * 1988-01-26 1989-07-27 Vaillant Joh Gmbh & Co Verfahren und einrichtungen zur herstellung eines einer verbrennung zuzufuehrenden, aus brenngas und verbrennungsluft bestehenden gemisches
GB2220059A (en) * 1985-10-25 1989-12-28 Rinnai Kk Water heating apparatus
EP0612959A1 (fr) * 1993-02-23 1994-08-31 D.W. Clysan B.V. Brûleur à venturi
US5511516A (en) * 1993-08-27 1996-04-30 Sabh (U.S.) Water Heater Group, Inc. Water heater with low NOx ceramic burner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652806A1 (de) * 1976-11-20 1978-05-24 Klaus Dipl Ing Matzke Brenner mit keilfoermigem staukoerper
FR2481415A1 (fr) * 1980-04-23 1981-10-30 Fulpin Jacques Bruleur a gaz
EP0190660A2 (fr) * 1985-02-02 1986-08-13 Hans Dr. Viessmann Brûleur à air soufflé sous faible pression
GB2220059A (en) * 1985-10-25 1989-12-28 Rinnai Kk Water heating apparatus
EP0223691A1 (fr) * 1985-11-06 1987-05-27 Gaz De France Brûleur à gaz à air soufflé
DE3902025A1 (de) * 1988-01-26 1989-07-27 Vaillant Joh Gmbh & Co Verfahren und einrichtungen zur herstellung eines einer verbrennung zuzufuehrenden, aus brenngas und verbrennungsluft bestehenden gemisches
EP0612959A1 (fr) * 1993-02-23 1994-08-31 D.W. Clysan B.V. Brûleur à venturi
US5511516A (en) * 1993-08-27 1996-04-30 Sabh (U.S.) Water Heater Group, Inc. Water heater with low NOx ceramic burner

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090317756A1 (en) * 2008-06-18 2009-12-24 Mestek, Inc. Digital high turndown burner
WO2009154603A1 (fr) * 2008-06-18 2009-12-23 Mestek, Inc. Brûleur numérisé à grande marge de réglage
EP2340399A4 (fr) * 2008-07-25 2017-03-15 Burner Systems International, Inc. Amélioration de brûleur
US8668491B2 (en) 2009-10-06 2014-03-11 Honeywell Technologies Sarl Regulating device for gas burners
US8512035B2 (en) 2010-03-09 2013-08-20 Honeywell Technologies Sarl Mixing device for a gas burner
CN102269407A (zh) * 2011-06-28 2011-12-07 无锡中阳新能源科技有限公司 高效金属纤维表面燃烧装置和智能控制器及其控制方法
CN102269407B (zh) * 2011-06-28 2013-04-10 无锡中阳新能源科技有限公司 高效金属纤维表面燃烧装置和智能控制器及其控制方法
US20150153066A1 (en) * 2013-12-04 2015-06-04 Victory Energy Operations. L.L.C. Method of providing heat to a heat exchanger apparatus via a burner
WO2015085098A1 (fr) * 2013-12-04 2015-06-11 Victory Energy Operations, L.L.C. Brûleur et procédé de fourniture de chaleur à un échangeur thermique via le brûleur
CN103953928A (zh) * 2014-05-06 2014-07-30 邓延鸿 一种预混燃气正压燃烧的节能燃烧器和蒸汽发生器
CN103953928B (zh) * 2014-05-06 2016-08-17 邓延鸿 一种预混燃气正压燃烧的节能燃烧器和蒸汽发生器
CN106765090A (zh) * 2016-12-23 2017-05-31 海湾环境科技（北京）股份有限公司 燃烧器
CN106765090B (zh) * 2016-12-23 2023-09-01 海湾环境科技（北京）股份有限公司 燃烧器
CN111765458A (zh) * 2020-07-02 2020-10-13 咸宁南玻玻璃有限公司 一种浮法灰玻生产线熔窑的天然气喷枪燃烧控制系统
CN111765458B (zh) * 2020-07-02 2023-03-24 咸宁南玻玻璃有限公司 一种浮法灰玻生产线熔窑的天然气喷枪燃烧控制系统

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