EP1091171B1 - Procédé pour produire un courant d'air homogène dans un brûleur à air soufflé et moyens de mise en oeuvre - Google Patents

Procédé pour produire un courant d'air homogène dans un brûleur à air soufflé et moyens de mise en oeuvre Download PDF

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Publication number
EP1091171B1
EP1091171B1 EP00120625A EP00120625A EP1091171B1 EP 1091171 B1 EP1091171 B1 EP 1091171B1 EP 00120625 A EP00120625 A EP 00120625A EP 00120625 A EP00120625 A EP 00120625A EP 1091171 B1 EP1091171 B1 EP 1091171B1
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EP
European Patent Office
Prior art keywords
stage
tranquilizer
tubular
screen
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.)
Expired - Lifetime
Application number
EP00120625A
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German (de)
English (en)
Other versions
EP1091171A1 (fr
Inventor
Iouri Prof. Dr. Bytchkov
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.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik GmbH
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Application filed by Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Publication of EP1091171A1 publication Critical patent/EP1091171A1/fr
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Anticipated expiration legal-status Critical
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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
    • F23D11/001—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle combined with forced draft fan in one 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
    • F23D14/34—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

Definitions

  • the invention relates to a method according to the preamble of claim 1 and Device for performing such a process on a forced draft burner.
  • the invention belongs to the field of thermal energy and can be used for the combustion of Gas and oil can be used in forced draft burners in household and industrial equipment.
  • US 5 184 949 A shows an oil burner with a pistol-shaped burner housing.
  • the combustion air delivered by the blower becomes tangentially cylindrical Combustion air duct supplied so that this with a swirl flow the combustion zone reached.
  • DE 30 24 225 A is a radial fan with a pressure side Flow guidance, which consists of several longitudinally extending guide channels exists, known. It can in the cylindrical mouth of the blower for example, two perforated disks can also be arranged one behind the other.
  • a device for the implementation of the method described above, a device is known that a Blower with an electric motor, a radial impeller, a housing with a spiral channel and Contains redirection.
  • the deflection faces the side of the electric motor.
  • the Device also contains a burner, which consists of the following parts: cylinder housing with Side cutout for the connection of the deflection and a rear floor, distributor element with air holes.
  • the air holes are even around a hole in the center arranged, which is intended for the fuel lance. Thanks to the deflection that faces the side of the electric motor, the burner picks up rational space in the free space above the electric motor of the blower, which is essential Reduction in weight and dimensions of the entire device.
  • the aim of the present invention is to create a homogeneous air flow in the Brenner by changing its structure and creating optimal conditions for the burning process and the improvement of aerodynamic characteristics of the Blower by increasing consumption and pressure as well as efficiency.
  • Homogenization is achieved by reducing the degree of turbulence at least in two stages of the airflow reached.
  • the 1st stage on the deflection as a linear calming device, preferably in the form of a lamellar grid
  • the 2nd stage in the burner housing as Pipe calmer in the form of a cylinder grille with one leading to the distributor element Output cross-section
  • the 3rd stage in the form of a circular calmer directly in front of the distributor element be arranged.
  • An additional reduction in the degree of turbulence at the 2nd stage is through a pipe pressure reducer to realize with cylinder grille.
  • This grid is the cylinder grid of the Pipe calmers geometrically similar.
  • the pipe pressure reducer is outside or (preferably) mounted on the inside of the pipe calming device, so that the possibility of disabled turning in the direction of the circle.
  • the device for implementing the method of creating a homogeneous air flow contains a blower with an electric motor, a radial impeller, a blower housing with a spiral channel and a deflection facing the side of the electric motor. It also has a burner, which consists of the following parts: housing with side cutout for connecting the redirection and with a rear floor with opening in the center for the fuel lance and round distributor element with air holes that evenly a hole is arranged in the center. It is at the exit from the redirection the 1st stage to reduce the degree of turbulence was installed. It is in the form of a Linear calming device with a lamella grid and is preferably made of lamella elements educated.
  • the second stage for reducing the degree of turbulence is installed inside the burner housing. It is in the form of an axially symmetrical pipe calmer with a cylinder grille executed, and this grid preferably has longitudinal slots.
  • a third stage in the form of a circular calmer in front of the distributor element as a perforated grid element.
  • 2 can optionally of the 3 levels can be combined.
  • the device with the main features and in particular with the entirety of the main and Additional features make it possible to implement the process for creating a homogeneous Air flow by changing its structure and solving the technical issues Task of making a uniform field of speeds of the Airflow in the combustion zone with simultaneous increase in aerodynamic characteristics of the blower such as consumption, pressure and efficiency.
  • the device for implementing the method of creating a homogeneous air flow contains a blower 1 with an electric motor 2, a radial impeller 3, a blower 4 with a spiral channel 5 and a deflection 6, which faces the side of the electric motor 2 and a burner 7 arranged next to it.
  • the latter consists of the following parts: Burner housing 8 with a rectangular side cutout 9 for connecting the deflection 6, floor 10 with opening in the center for the fuel lance 12 and round distributor element 13 with air holes 31 that are even around a hole 32 in the center for the essay 33 of the fuel lance 12 are arranged around.
  • the bottom 10 and the distributor element 13 can also have other holes for the accommodation the elements of the system of electric ignition, visual observation of the flame etc. (not shown on the pictures.
  • the linear calming device 14 is arranged at the exit from the deflection 6. It consists of a louvre grille 15, preferably made of individual slats 16, with the wide side are attached along the air flow. The resistance to the coming To reduce airflow, the downstream edge 17 of the fins 16 tapers. Further is the upstream edge 18 profiled according to the radius, with the center that the longitudinal axis 19 of the burner. The slats 16 can be placed that there is a possibility to change the distance between them.
  • the linear reifier 14 is installed symmetrically to the horizontal axis 20 of the burner. At the exit from the A linear slide valve 14 is provided with a gate valve 20. This is condensed into one Game between the deflection and the side cutout 9 in the burner housing 8 installed and can be moved up / down in guide grooves 21.
  • the Rohrquuhiger 22 can be made with a closed end section 25, the between the cylinder grid 23 and the distributor element 13.
  • the pipe calming device 22 can be fixed to the bottom 10 of the burner housing 8, but it can also be attached to the distributor element 13 and with it a removable one Form assembly. It is also possible to constructively design the pipe calming device 22 to be made with the distributor element 13.
  • the distributor element at least one additional circular calmer 26 with a grid 27, which preferably has round holes 28 with a small diameter.
  • the process for creating a homogeneous air flow in the forced air burner is in that the air flow through the impeller 3 of the blower 1 into the spiral duct 5 of the blower housing 4 pressed and from it in the deflection 6 from the lamella 15 of the Linear calming device 14 is sent where the 1st stage to reduce the degree of turbulence 3 times ⁇ 15 times (preferably ten times). It also becomes another important one Correlation between the sum areas of the air holes 31 of the distributor element 13 and the passage cross sections of the lamellar grid 15 are met. It lies in the interval 1.0 ⁇ 8.0 and is preferably 4.0.
  • the air flow is reduced with several degrees of turbulence sent into the burner housing 8, where it through the slots 24 of the cylinder grid 23 of Rohrberuhigers 22 is let through. This will make the 2nd stage of reduction of the turbulence rod (also 3 times ⁇ 15 times, preferably ten times).
  • the cylindrical burner housing has 90.0 mm inner diameter and 99.0 mm length.
  • the distributor element In the initial section of the housing there is the distributor element with 8 holes with a diameter of 9.0 mm, which are arranged evenly around the hole in the center for the fuel lance with the attachment (diameter 18.0 mm). It follows that the total area of the passage cross sections of the holes in the distributor is approximately 760 mm 2 .
  • the maximum degree of turbulence at the entrance to the 2nd stage will be 34.0 mm.
  • the device for implementing the method of creating a homogeneous air flow acts as follows:
  • the air flow is with the impeller 3 radial type that rotates from the electric motor 2 into the spiral channel 5 of the housing 4 of the blower 1 pressed.
  • a calming circuit follows 26 in the form of a grid 27 provided with small holes 28.
  • the air flow is characterized with a high degree of homogeneity.
  • the Homogeneity also remains behind the air holes 31 in the combustion zone of the propellant gas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air Supply (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (10)

  1. Procédé pour générer un flux d'air homogène par modification de la structure, dans lequel le flux d'air est envoyé sous pression par la turbine (3) d'une soufflerie (1) dans le canal en spirale (5) du corps de la soufflerie (4) et passe, via un déflecteur (6) sensiblement à angle droit, dans un corps de brûleur (8) disposé latéralement, depuis lequel il afflue, via des trous de passage d'air (31) ménagés dans un élément distributeur (13), dans la zone de combustion d'un brûleur à air soufflé,
    caractérisé par
    une réduction à au moins deux étages du degré de turbulence faisant appel à au moins deux des trois étages suivants : premier étage sur le déflecteur (6) du canal en spirale (5) vers le corps du brûleur (8) : un tranquilliseur linéaire (14), de préférence sous la forme d'une grille à lamelles (15), deuxième étage dans le corps du brûleur (8) : un tranquilliseur tubulaire (22), de préférence sous la forme d'une grille cylindrique (23) dont la face orientée vers l'élément distributeur (13) est ouverte, troisième étage : un tranquilliseur circulaire (26) sous la forme d'une grille (27) munie de petits trous (28) avant l'élément distributeur (13), qui homogénéise le flux d'air.
  2. Procédé selon la revendication 1
    caractérisé en ce que
    la réduction à deux étages du degré de turbulence du flux d'air est réalisée selon les conditions géométriques suivantes :
    pour le premier étage :
    M1 : M = (1 ÷ 3) : (1 ÷ 15), de préférence
    M1 : M = 1 : 10 ;
    ΣF1 : ΣF = 1 ÷ 8, de préférence ΣF1 : ΣF = 4 ;
    pour le deuxième étage :
    M2 : M = (1 ÷ 3) : (1 ÷ 15), de préférence
    M2 : M = 1 : 10 ;
    ΣF2 : ΣF = 3 ÷ 12, de préférence ΣF2 : ΣF = 6 ;
    M est la valeur maximum du degré de turbulence à l'entrée du premier étage ; M1 et M2 sont les valeurs maximum du degré de turbulence à la sortie respectivement du premier et du deuxième étage ; ΣF est la somme des surfaces des trous de passage d'air de l'élément distributeur ; ΣF1 et ΣF2 son les sommes des surfaces des sections de passage des grilles des tranquilliseurs respectivement du premier et du deuxième étage.
  3. Dispositif pour la génération d'un flux d'air homogène comprenant une soufflerie (1) avec un moteur électrique (2), une turbine radiale (3), un corps de soufflerie (4) avec un canal en spirale (5) et un déflecteur (6) orienté vers le côté du moteur électrique, ainsi qu'un corps de brûleur (8) avec une découpe latérale (9) pour le raccordement du déflecteur (6), un fond arrière (10) avec ouverture centrale (11) pour une ligne de gicleur (12) et un élément distributeur (13) disposé en face, sous la forme d'un disque muni de trous de passage de l'air (31),
    caractérisé en ce que,
    pour la réduction à au moins deux étages de degré de turbulence, au niveau du déflecteur (6), au moins deux des trois étages suivants sont montés : premier étage : un tranquilliseur linéaire (14), de préférence sous la forme d'une grille à lamelles (15), deuxième étage dans le corps du brûleur (8) : un tranquilliseur tubulaire (22) fixé de manière axisymétrique, sous la forme d'une grille cylindrique (23) munie de fentes (24) de préférence longitudinales, troisième étage avant l'élément distributeur (13) : un tranquilliseur circulaire (26) sous la forme d'une grille (27) munie de petits trous (28).
  4. Dispositif selon la revendication 3
    caractérisé en ce que
    la grille cylindrique (23) du tranquilliseur circulaire (22) présente des ouvertures d'une forme quelconque, respectant la condition suivante :
    M'2 : M1 = (1 ÷ 3) : (1 ÷ 15), de préférence
    M'2 : M1 = 1 : 10 ;
    ΣF'2 : ΣF = 3 ÷ 12, de préférence ΣF'2 : ΣF = 6 ;
    M'2 est la grandeur maximum d'un trou ; ΣF'2 est la sommes des surfaces des sections de passage des trous.
  5. Dispositif selon la revendication 3
    caractérisé en ce que
    la grille cylindrique (23) du tranquilliseur circulaire (22) présente une partie terminale (25) fermée.
  6. Dispositif selon la revendication 3
    caractérisé en ce que
    la grille cylindrique (23) du tranquilliseur circulaire (22) est fixée de manière stationnaire sur le fond (10) du corps du brûleur (8).
  7. Dispositif selon la revendication 3
    caractérisé en ce que
    la grille cylindrique (23) du tranquilliseur circulaire (22) est fixée sur l'élément distributeur (13) et forme, avec celui-ci, un sous-ensemble démontable.
  8. Dispositif selon la revendication 3
    caractérisé en ce que
    la grille cylindrique (23) du tranquilliseur circulaire (22) forme, conjointement avec l'élément distributeur (13), une unité produite durant la même opération.
  9. Dispositif selon la revendication 3
    caractérisé en ce qu'un détendeur tubulaire (29) en forme de grille, dont la géométrie est similaire à celle de la grille cylindrique (23) du tranquilliseur circulaire (22), est disposé en plus dans la grille cylindrique (23) du tranquilliseur circulaire (22).
  10. Dispositif selon la revendication 9
    caractérisé en ce que
    le détendeur tubulaire (29) est disposé à l'extérieur du tranquilliseur circulaire (22).
EP00120625A 1999-10-08 2000-09-21 Procédé pour produire un courant d'air homogène dans un brûleur à air soufflé et moyens de mise en oeuvre Expired - Lifetime EP1091171B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948876 1999-10-08
DE19948876A DE19948876C2 (de) 1999-10-08 1999-10-08 Verfahren zum Schaffen eines homogenen Luftstroms in einem Gebläsebrenner und Gerät für seine Verwirklichung

Publications (2)

Publication Number Publication Date
EP1091171A1 EP1091171A1 (fr) 2001-04-11
EP1091171B1 true EP1091171B1 (fr) 2004-02-25

Family

ID=7925194

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Application Number Title Priority Date Filing Date
EP00120625A Expired - Lifetime EP1091171B1 (fr) 1999-10-08 2000-09-21 Procédé pour produire un courant d'air homogène dans un brûleur à air soufflé et moyens de mise en oeuvre

Country Status (7)

Country Link
EP (1) EP1091171B1 (fr)
AT (1) ATE260441T1 (fr)
CZ (1) CZ296290B6 (fr)
DE (2) DE19948876C2 (fr)
ES (1) ES2214202T3 (fr)
PL (1) PL192918B1 (fr)
TR (1) TR200002928A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327391B3 (de) 2003-06-18 2004-12-16 Bbt Thermotechnik Gmbh Mischeinrichtung für einen Öl- oder Gasbrenner
CN111780109B (zh) * 2020-07-16 2022-04-12 东北大学 一种超低排放的旋流富氧无焰燃烧器及使用方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790918A (fr) * 1971-11-18 1973-03-01 Palm Bjorn Olov Magnus Procede et dispositif pour reduire la pression dynamique de l'air de combustion a la tete du bruleur d'un appareil consommant de l'huile combustible
JPS5296420A (en) * 1976-02-10 1977-08-13 Mitsubishi Heavy Ind Ltd Burner
DE7823246U1 (de) * 1978-08-03 1978-11-09 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Brenner fuer fluessigen oder gasfoermigen brennstoff
DE3024225A1 (de) * 1980-06-27 1982-01-21 Werner Dr. 8972 Sonthofen Röhrs Stroemungsfuehrung
AT395762B (de) * 1988-07-14 1993-03-25 Vaillant Gmbh Mit einem brenngas-luft-gemisch gespeister gasbrenner
US5184949A (en) * 1990-09-07 1993-02-09 R. W. Beckett Corporation Oil burner and method
DE19503781A1 (de) * 1995-02-04 1996-08-08 Buderus Heiztechnik Gmbh Öl- oder Gasgebläsebrenner

Also Published As

Publication number Publication date
CZ20003646A3 (cs) 2002-07-17
TR200002928A2 (tr) 2001-10-22
ES2214202T3 (es) 2004-09-16
DE19948876A1 (de) 2001-04-19
CZ296290B6 (cs) 2006-02-15
ATE260441T1 (de) 2004-03-15
DE50005397D1 (de) 2004-04-01
EP1091171A1 (fr) 2001-04-11
PL343017A1 (en) 2001-04-09
DE19948876C2 (de) 2003-06-26
PL192918B1 (pl) 2006-12-29

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