EP0947770B1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

Info

Publication number
EP0947770B1
EP0947770B1 EP99105813A EP99105813A EP0947770B1 EP 0947770 B1 EP0947770 B1 EP 0947770B1 EP 99105813 A EP99105813 A EP 99105813A EP 99105813 A EP99105813 A EP 99105813A EP 0947770 B1 EP0947770 B1 EP 0947770B1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
burner body
fuel
air mixture
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
EP99105813A
Other languages
German (de)
English (en)
Other versions
EP0947770A3 (fr
EP0947770A2 (fr
Inventor
Juergen Waidner
Marcus Bienzle
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0947770A2 publication Critical patent/EP0947770A2/fr
Publication of EP0947770A3 publication Critical patent/EP0947770A3/fr
Application granted granted Critical
Publication of EP0947770B1 publication Critical patent/EP0947770B1/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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • F23C99/006—Flameless combustion stabilised within a bed of porous heat-resistant material
    • 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

Definitions

  • the invention relates to a gas burner with a burner body structure is partially penetrated and in which a fuel gas-air mixture is combustible, the transverse to the flow direction of the fuel gas-air mixture running cross-sectional area of the reaction zone of the burner body, in which the combustion takes place, at least in the direction of flow enlarged in a partial area of the burner body.
  • a gas burner with a burner body of this type is known from US Pat. No. 5,147,201 known. With this gas burner, the reaction zone is distributed over the entire Flow direction according to the continuous cross-sectional enlargement. This means a higher temperature volume load with low burner output than possible with a high burner output, but via the flow direction no specific adaptation of the reaction zone.
  • the fuel gas-air mixture introduced into a hollow spherical burner body which is not arbitrarily adaptable Represents reaction zone. In this way there is no influence on the temperature volume load be taken.
  • JP 03 241 212 A has a frustoconical shape Burner body for which the same disadvantages as with the gas burner of US 5,147,201 A apply.
  • This object is achieved according to the invention in that the cross-sectional area the reaction zone over one or more increments increased.
  • the configuration of the cross-sectional enlargement according to the invention allows an adjustment the temperature volume load depending on the burner output to.
  • the partial areas of the burner body are certain burner outputs assigned.
  • the fuel gas / air mixture can be supplied to the burner body be designed so that the fuel gas-air mixture in the burner body Can be introduced via a supply line and via a cylindrical or spherical one Distributor can be forwarded to the burner body.
  • the burner body two or more cylindrical or circular disc-shaped burner bodies has a different diameter, and that the The longitudinal axes of the partial burner bodies are arranged in alignment with one another.
  • the partial burner body in the flow direction of the fuel gas-air mixture have different thicknesses. It is conceivable also, instead of the step-like design of the burner body, an embodiment to give yourself partly continuously and partly over one or more increments increased.
  • a burner body 10 is shown, which is a stump-shaped Has geometry.
  • the burner body 10 is of a lateral lateral surface 13, an inlet surface 11 and an exhaust gas outlet surface 12.
  • the Entry surface 11 and exhaust gas exit surface 12 are circular.
  • a combustible gas / air mixture is supplied to the burner body 10 via the entry surface 11 fed. Here it flows into the porous burner body 10 and ignites yourself.
  • the reaction zone in which the Fuel gas-air mixture is implemented starting from the entry surface 11 only low into the burner body 10. Due to the conical geometry of the Burner body 10, the available combustion volume at the low Burner output kept low. This creates a high temperature area or - volume load. With increasing burner output, too the volume flow of fuel gas-air mixture that flows into the burner body 10 elevated. The reaction zone extends increasingly into the burner body 10 in. This also enlarges the reaction zone. The Temperature areas or volume loads then decrease.
  • a burner body 10 is illustrated in FIG. 2, the two partial burner bodies 14.1, 14.2.
  • the partial fuel body 14.1 has a frustoconical shape Geometry.
  • the partial fuel body 14.2 is cylindrical.
  • the two Partial burners 14.1, 14.2 can be manufactured individually or can be provided that these are integrally connected.
  • In the partial firing element 14.1 is a continuous enlargement of the cross-sectional area the burner body 10 realized.
  • a certain performance range can be found here extend the gas burner.
  • the power can be from 0 up to 40% of the total output of the gas burner.
  • Following the Partial fuel body 14.1 shifts the reaction zone over the entry surface 11 "in the second partial fuel body 14.2. In this area the remaining Power of the gas burner.
  • Fig. 3 illustrates a gas burner 10 in which the cross-sectional area enlarged in the flow direction of the gas-air mixture by increments.
  • three partial fuel elements 14.1, 14.2, 14.3 are used.
  • This part-fuel body 14.1, 14.2, 14.3 have a cylindrical shape and are of the Shell surfaces 13 limited.
  • the central longitudinal axes of the partial fuel elements 14.1, 14.2, 14.3 are arranged in alignment with one another.
  • the extension of the part-firing element 14.1, 14.2, 14.3 in the flow direction is the same in each case.
  • Every part of the burner 14.1, 14.2, 14.3 is a specific performance area of Assigned to the gas burner. Serve in a medium performance range, for example the partial fuel element 14.1 and partly also the partial fuel element 14.2 as a reaction zone.
  • FIG. 4 illustrates an alternative embodiment to the burner body 10 3.
  • the cylindrical partial fuel elements 14.1, 14.2, 14.3 different extensions in the direction of the flow of the gas-air mixture on.
  • To an increased in the lower power range of the gas burner To be able to achieve variability in the temperature volume load are two partial fuel elements 14.1, 14.2 are narrow.
  • FIG. 5 shows a burner body 10 with a cylindrical shape.
  • Burner body 10 can be connected via a feed line 15 and a distributor 16
  • Fuel gas-air mixture can be introduced. This flows out of the distributor 16 in the porous burner body 10 and ignites here.
  • the fuel gas-air mixture escapes from the distributor and flows into the burner body 10. at low burner capacities, the reaction zone is tight around the distributor 16 arranged around.
  • the reaction zone extends at higher burner capacities also increasingly ring-shaped into the burner body 10.
  • the Exhaust gases generated during combustion escape through the outer surface 13, which serves as the exhaust gas outlet surface 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Gas Burners (AREA)

Claims (6)

  1. Brûleur à gaz avec un corps de brûleur (10), partiellement traversé par une structure poreuse, et dans lequel un mélange de gaz de combustion et d'air peut être brûlé, dans lequel la section de la zone de réaction du corps de brûleur (10) dans laquelle la combustion se produit, transversale à la direction d'écoulement du mélange de gaz de combustion et d'air, s'agrandit en direction de l'écoulement, au moins dans une zone partielle du corps de brûleur (10),
    caractérisé en ce que
    la section transversale de la zone de réaction s'agrandit en un ou plusieurs paliers.
  2. Brûleur à gaz selon la revendication 1,
    caractérisé en ce que
    le mélange de gaz de combustion et d'air dans le corps de brûleur (10) peut être apporté par un conduit d'amenée (15) puis transmis au corps de brûleur (10) au travers d'un répartiteur (16) cylindrique ou sphérique.
  3. Brûleur à gaz selon la revendication 1 ou 2,
    caractérisé en ce que
    le corps de brûleur (10) présente deux corps partiels de brûleur(14.1, 14.2 ... 14.n) ou plus, cylindriques ou en forme de disque, qui présentent un diamètre différent, et les axes longitudinaux médians des corps partiels de brûleur (14.1, 14.2 ... 14.n) sont disposés de manière affleurante les uns par rapport aux autres.
  4. Brûleur à gaz selon la revendication 3,
    caractérisé en ce que
    les corps partiels de brûleur p(14.1, 14.2 ... 14.n) présentent des épaisseurs différentes dans le sens d'écoulement du mélange de gaz de combustion et d'air.
  5. Procédé de combustion d'un mélange de gaz de combustion et d'air dans un brûleur à gaz selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce qu'
    une charge en température et en volume plus forte est créée dans le corps de brûleur (10) pour une faible puissance de brûleur du brûleur à gaz que pour une plus forte puissance de brûleur.
  6. Brûleur à gaz selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    la section transversale de la zone de réaction s'agrandit partiellement de façon continue et partiellement en un ou plusieurs paliers.
EP99105813A 1998-03-28 1999-03-23 Brûleur à gaz Expired - Lifetime EP0947770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813896 1998-03-28
DE19813896A DE19813896B4 (de) 1998-03-28 1998-03-28 Gasbrenner

Publications (3)

Publication Number Publication Date
EP0947770A2 EP0947770A2 (fr) 1999-10-06
EP0947770A3 EP0947770A3 (fr) 2000-03-01
EP0947770B1 true EP0947770B1 (fr) 2003-10-08

Family

ID=7862764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105813A Expired - Lifetime EP0947770B1 (fr) 1998-03-28 1999-03-23 Brûleur à gaz

Country Status (2)

Country Link
EP (1) EP0947770B1 (fr)
DE (2) DE19813896B4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233340B4 (de) * 2002-07-23 2004-07-15 Rational Ag Porenbrenner sowie Gargerät, enthaltend mindestens einen Porenbrenner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR471656A (fr) * 1913-07-16 1914-11-06 Gaz De Paris Bruleur à gaz à combustion de surface
US1331022A (en) * 1919-06-26 1920-02-17 Mathy Maurice Burner
DE2841105C2 (de) * 1978-09-21 1986-10-16 Siemens AG, 1000 Berlin und 8000 München Vergasungsbrenner
JPS58124110A (ja) * 1982-01-19 1983-07-23 Matsushita Electric Ind Co Ltd 燃焼装置
JPS60243414A (ja) * 1984-05-17 1985-12-03 Matsushita Electric Ind Co Ltd 燃焼装置
JPH03241212A (ja) * 1990-02-19 1991-10-28 Toshiba Corp 触媒燃焼装置
US5147201A (en) * 1990-11-19 1992-09-15 Institute Of Gas Technology Ultra-low pollutant emissions radiant gas burner with stabilized porous-phase combustion
DE9107108U1 (de) * 1991-06-09 1991-08-01 Braun Ag, 6000 Frankfurt Beheizbares Gerät des persönlichen Bedarfs

Also Published As

Publication number Publication date
DE59907249D1 (de) 2003-11-13
DE19813896B4 (de) 2005-12-29
EP0947770A3 (fr) 2000-03-01
DE19813896A1 (de) 1999-09-30
EP0947770A2 (fr) 1999-10-06

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