EP1091171B1 - Method for the generation of a homogeneous air flow in a forced-draft burner and device for its realization - Google Patents
Method for the generation of a homogeneous air flow in a forced-draft burner and device for its realization Download PDFInfo
- 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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- Prior art keywords
- stage
- tranquilizer
- tubular
- screen
- burner
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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.
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- 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)
Abstract
Description
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruches 1 und ein
Gerät zum Durchführen eines solchen Verfahrens bei einem Gebläsebrenner.The invention relates to a method according to the preamble of
Die Erfindung gehört zu dem Gebiet der Wärmeenergetik und kann für das Verbrennen von Gas und Öl in Gebläsebrennern in haushältlichen und industriellen Geräten benutzt werden.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.
Es ist ein Verfahren der Zuführung des Luftstromes in die Brennzone von Gebläsebrennem bekannt, bei dem der Luftstrom durch das radiale Laufrad eines Gebläses in den Spiralkanal des Gebläsegehäuses gepreßt und dann etwa rechtwinklig in ein seitlich davon angeordnetes Brennergehäuse umgelenkt wird, aus dem es durch Luftlöcher in einem Verteilerelement in die Brennzone des Brennstoffstrahles einströmt.It is a method of feeding the air flow into the burning zone of forced draft burners known in which the air flow through the radial impeller of a blower into the spiral duct of the blower housing and then pressed approximately at right angles in a laterally arranged Burner housing is deflected, from which it is through air holes in a distributor element flows into the combustion zone of the fuel jet.
Die US 5 184 949 A zeigt einen Ölbrenner mit einem pistolenförmigen Brennergehäuse.
Dabei wird die vom Gebläse geförderte Verbrennungsluft tangential einem zylindrischen
Verbrennungsluftkanal zugeführt, damit diese mit einer Drallströmung die Brennzone
erreicht. Außerdem ist aus der DE 30 24 225 A ein Radialgebläse mit einer druckseitigen
Strömungsführung, welche aus mehreren in Längsrichtung verlaufenden Führungskanälen
besteht, bekannt. Dabei können im zylindrischen Ausmündungskanal des Gebläses
beispielsweise auch zwei Lochscheiben hintereinander angeordnet sein.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. In addition,
Für die Verwirklichung des oben beschriebenen Verfahrens ist ein Gerät bekannt, das ein Gebläse mit einem Elektromotor, einem Radiallaufrad, einem Gehäuse mit Spiralkanal und Umlenkung enthält. Die Umlenkung ist dabei zur Seite des Elektromotors gewandt. Das Gerät enthält auch einen Brenner, der aus folgenden Teilen besteht: Zylindergehäuse mit Seitenausschnitt für den Anschluß der Umlenkung und einem rückwärtigen Boden, Verteilerelement mit Luftlöchern. Die Luftlöcher sind gleichmäßig um ein Loch im Zentrum herum angeordnet, das für die Brennstofflanze bestimmt ist. Dank der Umlenkung, die zur Seite des Elektromotors hin gewandt ist, nimmt der Brenner rationell Platz im freien Raum über dem Elektromotor des Gebläses, was zur wesentlichen Verringerung des Gewichtes und der Abmessungen des gesamten Gerätes beträgt.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.
Das Ziel der vorliegenden Erfindung ist das Schaffen eines homogenen Luftstromes im Brenner durch Änderung seiner Struktur und dabei das Schaffen von optimalen Bedingungen für den Brennprozeß und die Verbesserung aerodynamischer Charakteristiken des Gebläses durch Erhöhung des Verbrauchs und Druckes sowie des Wirkungsgrades.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.
Gemäß der Erfindung wird dieses Ziel durch die Anwendung der im Patentanspruch 1 genannten
Maßnahmen erreicht. Zusätzliche Einzelheiten sind den Ansprüchen 2 bis 5 zu
entnehmen. Das Gerät zur Durchführung des erfindungsgemäßen Verfahrens besitzt die
im Patentanspruch 6 genannten Merkmale. Die Ansprüche 7 bis 22 enthalten weitere
Merkmale eines solchen Gerätes.According to the invention, this aim is achieved by the application of those mentioned in
Durch eine mindestens zweistufige Verringerung des Turbulenzgrades wird eine Homogenisierung des Luftstromes erreicht. Dabei kann die 1. Stufe an der Umlenkung als Linearberuhiger, vorzugsweise in Form eines Lamellengitters, die 2. Stufe im Brennergehäuse als Rohrberuhiger in Form eines Zylindergitters mit einem zum Verteilerelement führenden Ausgangsquerschnitt und die 3. Stufe in Form eines Kreisberuhigers direkt vor dem Verteilerelement angeordnet sein.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 and the 3rd stage in the form of a circular calmer directly in front of the distributor element be arranged.
Die 2-stufige Verringerung des Turbulenzgrades des Luftstromes wird bereits verwirklicht,
wenn folgende geometrische Bedingungen eingehalten sind:
Falls eine tiefere strukturelle Umgestaltung des Fließens des Luftstromes nötig ist, verwirklicht man eine n-stufige Verringerung der Turbulenzgrade, wobei N > 2 ist, d. h. dreistufige oder mehrstufige Verringerung. Dazu führt man zusätzlich in den Luftstrom hinter dem Zylindergitter des Rohrberuhigers vor dem Verteilerelement ein oder mehrere Kreisberuhiger mit Gittern ein, die vorzugsweise runde Löcher vom kleinen Durchmesser haben.If a deeper structural redesign of the flow of the air flow is necessary, realized an n-stage reduction in the degree of turbulence, where N> 2, d. H. three-stage or multi-stage reduction. In addition, one leads into the air flow behind the cylinder grille of the pipe calmer in front of the distributor element one or more circular calmers with grids, which preferably have round holes of small diameter.
Bei dem vorgeschlagenen Verfahren zum Schaffen eines homogenen Luftstroms im Gebläsebrenner ist es vorteilhaft, den Verbrauch zusätzlich am Ausgang aus der 1. Stufe durch einen Absperrschieber zu regeln.In the proposed method for creating a homogeneous air flow in the forced air burner it is advantageous to add the consumption at the exit from the 1st stage to be regulated by a gate valve.
Eine zusätzliche Verringerung des Turbulenzgrades an der 2. Stufe ist durch einen Rohrdruckminderer mit Zylindergitter zu verwirklichen. Dieses Gitter ist dem Zylindergitter des Rohrberuhigers geometrisch ähnlich. Der Rohrdruckminderer wird außen oder (vorzugsweise) innen am Rohrberuhiger montiert, so daß die Möglichkeit des behinderten Drehens in der Kreisrichtung besteht.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.
Das Gerät für die Verwirklichung des Verfahrens zum Schaffen eines homogenen Luftstromes enthält ein Gebläse mit einem Elektromotor, ein Radiallaufrad, ein Gebläsegehäuse mit einem Spiralkanal und einer zur Seite des Elektromotors gewandten Umlenkung. Es besitzt ferner einen Brenner, der aus folgenden Teilen besteht: Gehäuse mit Seitenausschnitt für den Anschluß der Umlenkung und mit rückwärtigem Boden mit Öffnung im Zentrum für die Brennstofflanze und rundes Verteilerelement mit Luftlöchern, die gleichmäßigum ein Loch im Zentrum herum angeordnet sind. Dabei ist am Ausgang aus der Umlenkung die 1. Stufe zur Verringerung des Turbulenzgrades eingebaut. Sie ist in Form eines Linearberuhigers mit einem Lamellengitter ausgeführt und wird vorzugsweise aus Lamellenelementen gebildet. 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.
Innen im Brennergehäuse ist die 2. Stufe zur Verringerung des Turbulenzgrades eingebaut. Sie ist in Form eines axialsymetrisch befestigten Rohrberuhigers mit einem Zylindergitter ausgeführt, und dieses Gitter hat vorzugsweise längsläufige Schlitze.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.
Ergänzend folgt vor dem Verteilerelement noch eine 3. Stufe in Form eines Kreisberuhigers als gelochtes Gitterelement. Im Fall einer 2-stufigen Beruhigung können dabei wahlweise 2 der 3 Stufen miteinander kombiniert werden.In addition, there is a third stage in the form of a circular calmer in front of the distributor element as a perforated grid element. In the case of a 2-stage calming, 2 can optionally of the 3 levels can be combined.
Das Gerät mit den Hauptmerkmalen und insbesondere mit der Gesamtheit der Haupt- und Zusatzmerkmale ermöglicht die Verwirklichung des Verfahrens zum Schaffen eines homogenen Luftstromes durch Änderung seiner Struktur sowie die Lösung der gestellten technisehen Aufgabe der Herstellung eines gleichmäßigen Feldes der Geschwindigkeiten des Luftstromes in der Brennzone mit gleichzeitiger Erhöhung der aerodynamischen Charakteristiken des Gebläses wie Verbrauch, Druck und Wirkungsgrad.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.
Die Zeichnung zeigt ein Gebläsegehäuse, mit dem das erfindungsgemäße Verfahren zum Homogenisieren des Luftstromes zu erzielen ist. Es zeigt:
- Fig. 1:
- In Pos. B: Eine Stimansicht des Gehäuses teilweise im Schnitt,
In Pos. A: Den Schnitt 1-1 aus Fig. 2,
In Pos. A-1 und A-2: Vergrößerte Auszüge aus Pos. A, - Fig. 2:
- Den Schnitt 2-2 aus Fig. 1 ohne Elektromotor und Seitenabdeckung,
- Fig. 3:
- Den Schnitt 3-3 aus Fig. 1 und
- Fig. 4:
- Einen Teil-Schnitt 2-2 aus Fig. 1
- Fig. 1:
- In Pos. B : A front view of the housing, partly in section,
In Pos. A : Section 1 - 1 from Fig. 2,
In items A-1 and A-2 : enlarged excerpts from item A , - Fig. 2:
- Section 2 - 2 from FIG. 1 without an electric motor and side cover,
- Fig. 3:
- The section 3 - 3 of Fig. 1 and
- Fig. 4:
- A partial section 2 - 2 from FIG. 1
Das Gerät für die Verwirklichung des Verfahrens zum Schaffen eines homogenen Luftstromes
enthält ein Gebläse 1 mit einem Elektromotor 2, ein Radiallaufrad 3, ein Gebläse 4
mit einem Spiralkanal 5 und eine Umlenkung 6, die zur Seite des Elektromotors 2 gewandt
ist, sowie einen daneben angeordneten Brenner 7. Der letztere besteht aus folgenden Teilen:
Brennergehäuse 8 mit rechteckigem Seitenausschnitt 9 für den Anschluß der Umlenkung
6, Boden 10 mit Öffnung im Zentrum für die Brennstofflanze 12 und rundes Verteilerelement
13 mit Luftlöchern 31, die gleichmäßig um ein Loch 32 im Zentrum für den Aufsatz
33 der Brennstofflanze 12 herum angeordnet sind. The device for implementing the method of creating a homogeneous air flow
contains a
Der Boden 10 und das Verteilerelement 13 können auch andere Löcher für die Unterbringung
der Elemente des Systems der Elektroanzündung, visuelle Beobachtung der Flamme
usw. haben (auf den angeführten Bildern nicht dargestellt.The bottom 10 and the
Am Ausgang aus der Umlenkung 6 ist der Linearberuhiger 14 angeordnet. Er besteht aus
einem Lamellengitter 15, vorzugsweise aus einzelnen Lamellen 16, die mit breiter Seite an
dem Luftstrom entlang befestigt sind. Um den Widerstand gegenüber dem kommenden
Luftstrom zu verringern, läuft der abströmseitige Rand 17 der Lamellen 16 spitz aus. Ferner
ist der anströmseitige Rand 18 nach dem Radius profiliert, mit dem Zentrum, das an
der längsläufigen Achse 19 des Brenners liegt. Die Lamellen 16 können so gestellt werden,
daß es die Möglichkeit gibt, den Abstand zwischen ihnen zu ändern. Der Linearberuhiger
14 ist symmetrisch zur Horizontalachse 20 des Brenners eingebaut. Am Ausgang aus dem
Linearberuhiger 14 ist ein Absperrschieber 20 vorgesehen. Dieser wird in einem verdichteten
Spiel zwischen der Umlenkung und dem Seitenausschnitt 9 im Brennergehäuse 8
eingebaut und kann nach oben/nach unten in Führungsnuten 21 bewegt werden.The linear
Innen im Brennergehäuse 8 befindet sich der axialsymetrisch eingebaute Rohrberuhiger 22
mit Zylindergitter 23, das vorzugsweise längsläufige Schlitze enthält. So sind das Lamellengitter
15 des Linearberuhigers 14 und das Zylindergitter 23 des Rohrberuhigers 22
senkrecht zueinander.Inside the burner housing 8 is the axially symmetrical
Der Rohrberuhiger 22 kann Öffnungen jeder beliebigen Form enthalten, z. B. querlaufende
geschlitzte Löcher, runde oder nicht runde polygonale Löcher usw., unter folgender Bedingung:
ΣF2: ΣF = 3÷12, vorzugsweise ΣF2 : ΣF = 6.The
Für die Länge L1 des Zylindergitters 23 des Rohrberuhigers 22 gilt dabei die Bedingung L1
≥ L2, vorzugsweise L1 = L2, wobei L2 die Länge des Lamellengitters 15 des Linearberuhigers
14 ist.The condition L 1 L L 2 , preferably L 1 = L 2 , applies to the length L 1 of the
Der Rohrberuhiger 22 kann mit geschlossener Endstrecke 25 angefertigt sein, die zwischen
dem Zylindergitter 23 und dem Verteilerelement 13 liegt. The
Der Rohrberuhiger 22 kann am Boden 10 des Brennergehäuses 8 stationär befestigt sein,
aber er kann ebenso am Verteilerelement 13 befestigt sein und mit diesem eine abnehmbare
Baugruppe bilden. Es ist auch möglich, konstruktiv den Rohrberuhiger 22 gemeinsam
mit dem Verteilerelement 13anzufertigen.The
Wenn es nötig ist, montiert man hinter dem Zylindergitter 23 des Rohrberuhigers 22 vor
dem Verteilerelement mindestens einen zusätzlichen Kreisberuhiger 26 mit einem Gitter
27, das vorzugsweise runde Löcher 28 mit kleinem Durchmesser hat.If necessary, one pre-assembles behind the
Um den Turbulenzgrad an der 2. Stufe zu lenken, montiert man außen oder innen im
Rohrberuhiger 22 zusätzlich, mit Möglichkeit des behinderten Drehens in der Kreisrichtung,
einen Rohrdruckminderer 29 mit einem Zylindergitter 30, das dem Zylindergitter 23 des
Rohrberuhigers 22 geometrisch ähnlich ist.To steer the degree of turbulence at the 2nd stage, you mount inside or outside in the
Pipe calmer 22 additionally, with the possibility of disabled turning in the circular direction,
a
Das Verfahren zum Schaffen eines homogenen Luftstromes im Gebläsebrenner besteht
darin, daß der Luftstrom durch das Laufrad 3 des Gebläses 1 in den Spiralkanal 5 des Gebläsegehäuses
4 gepreßt und daraus in der Umlenkung 6 aus das Lamellengitter 15 des
Linearberuhigers 14gesandt wird, wo die 1. Stufe zur Verringerung des Turbulenzgrades
3mal ÷ 15mal (vorzugsweise zehnmal) verwirklicht wird. Dabei wird auch eine andere wichtige
Korrelation zwischen den Summenflächen der Luftlöcher 31 des Verteilerelements 13
und den Durchgangsquerschnitten des Lamellengitters 15 erfüllt. Es liegt im Intervall 1,0 ÷
8,0 und ist vorzugsweise gleich 4,0.The process for creating a homogeneous air flow in the forced air burner is
in that the air flow through the
Nach dem Linearberuhiger 14 wird der Luftstrom mit mehrfach verringerten Turbulenzgraden
ins Brennergehäuse 8 gesandt, wo er durch die Schlitze 24 des Zylindergitters 23 des
Rohrberuhigers 22 durchgelassen wird. Damit wird die Verwirklichung der 2. Stufe zur Verringerung
des Turbulenzstabes erzielt (ebenso 3mal ÷ 15mal, vorzugsweise zehnmal).After the linear calming
Die Korrelation zwischen den Summenflächen der Luftlöcher des Verteilerelements 13 und
Durchgangsquerschnitten des Zylindergitters 23 im Intervall 3,0 ÷ 12,0 (vorzugsweise
gleich 6,0) wird vorbehalten. Die Einhaltung der genannten Korrelation der Turbulenzgrade
bei dem 2-Stufen-Schema ermöglicht das Erzielen eines homogenen Luftstromes hinter
der 2. Stufe, was die Effizienz des Brennprozesses stark erhöht. The correlation between the sum areas of the air holes of the
Die Erfüllung der o. g. Korrelationen der Summenflächen der Luftlöcher des Verteilerelementes und der Gitter der 1. und 2. Stufe und/oder gegebenenfalls einer 3. Stufe ermöglicht die strukturelle Umgestaltung des Luftstroms praktisch ohne innere Verluste und die Erzielung von hohen aerodynamischen Kennwerten des ganzen Gasbrennergerätes.The fulfillment of the above Correlations of the total areas of the air holes in the distributor element and the grid of the 1st and 2nd stage and / or, if necessary, a 3rd stage the structural redesign of the air flow with practically no internal losses and the Achievement of high aerodynamic characteristics of the whole gas burner device.
Beispiel: Es gibt einen Gebläsebrenner mit einem Gebläse, das für die Luftzuführung in die Brennzone in Höhe von 97,5 m3 pro Stunde berechnet ist. Das zylindrische Brennergehäuse hat 90,0 mm Innendurchmesser und 99,0 mm Länge. In dem Ausgangsschnitt des Gehäuses befindet sich das Verteilerelement mit 8 Löchern mit Durchmesser 9,0 mm, die gleichmäßig um das Loch im Zentrum für die Brennstofflanze mit dem Aufsatz (Durchmesser 18,0 mm) herum angeordnet sind. Daraus folgt, daß die Summenfläche der Durchgangsquerschnitte der Löcher des Verteilers ca. 760 mm2 beträgt.Example: There is a forced draft burner with a fan, which is calculated for the air supply to the combustion zone at a height of 97.5 m 3 per hour. The cylindrical burner housing has 90.0 mm inner diameter and 99.0 mm length. 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 .
Der Ausgangsquerschnitt der Umlenkung in dem die 1. Stufe der Verringerung des Turbulenzgrades in Form eines Lamellengitters des Linearberuhigers einzubauen ist, hat die Abmessungen wie folgt: Höhe 34,0 mm und Länge 99,0 mm. Folglich ist der maximale Turbulenzgrades am Eingang in die 1. Stufe gleich 99,0 mm. Wenn man für die 1. Stufe die vorzügliche Korrelation M1 : M = 1 10 benutzt, ist das Lamellengitter aus 10 Zellen zu machen (Intervall zwischen den Zellen = 9 mm, Stärke der Lamellenelemente = 1,0 mm). Folglich wird der Schnitt einer Zelle des Lamellengitters des Linearberuhigers die folgenden Abmessungen haben: Höhe = 34,0 mm und Länge = 9,0 mm. In diesem Fall wird der maximale Turbulenzgrad am Eingang in die 2. Stufe 34,0 mm betragen.The initial cross-section of the deflection, in which the first stage of the reduction in the degree of turbulence in the form of a lamellar grille of the linear calming device is to be installed, has the dimensions as follows: height 34.0 mm and length 99.0 mm. As a result, the maximum degree of turbulence at the entrance to the 1st stage is 99.0 mm. If the excellent correlation M 1 : M = 1 10 is used for the 1st stage, the lamella grid should be made up of 10 cells (interval between cells = 9 mm, thickness of the lamella elements = 1.0 mm). As a result, the section of a cell of the lamellar grille of the linear sedative will have the following dimensions: height = 34.0 mm and length = 9.0 mm. In this case the maximum degree of turbulence at the entrance to the 2nd stage will be 34.0 mm.
Wenn man für die 2. Stufe die vorzügliche Korrelation M2 : M1 = 1 : 10 benutzt, bekommt man die charakteristische Größe der geschlitzten Rille des Zylindergitters des Linearberuhigers = 3,4 mm; für Bequemlichkeit des Ausführung kann man es bis 3,00 mm abrunden.If you use the excellent correlation M2: M1 = 1:10 for the 2nd stage, you get the characteristic size of the slotted groove of the cylindrical grille of the linear calming device = 3.4 mm; for convenience of execution, it can be rounded down to 3.00 mm.
Lassen wir den Außendurchmesser des Linearberuhigers gleich 74,00 mm sein. Dann wäre es zweckmäßig, bei gleicher Länge des Zylindergitters des Linearberuhigers und der Länge des Lamellengitters des Linearberuhigers (= 99,0 mm) das Gitter folgendermaßen zu gestalten: 46 geschlitzte Rillen, 3,0 mm breit, Abstände zwischen ihnen ca. 2,0 mm. Let us leave the outer diameter of the linear sedative equal to 74.00 mm. Then would be it expedient, with the same length of the cylindrical grille of the linear calming device and the Length of the lamellar grille of the linear calming device (= 99.0 mm) the grille as follows to be designed: 46 slotted grooves, 3.0 mm wide, distances between them approx. 2.0 mm.
Für die oben angeführten geometrischen Größen der 1. und 2. Stufen der Verringerung des Turbulenzgrades werden die Korrelationen der Summenflächen der Durchgangsquerschnitte der Gitter der Beruhiger zu der Summarfläche der Luftlöcher des Verteilers in optimalen Intervallen liegen und wie folgt betragen: für die 1. Stufe ΣF1 : ΣF = 4,0; ΣF2 : ΣF = 6,0.For the above-mentioned geometrical quantities of the 1st and 2nd stages of reducing the degree of turbulence, the correlations of the total areas of the passage cross sections of the grille of the calmers to the total area of the air holes of the distributor will be at optimal intervals and are as follows: for the 1st stage ΣF 1 : ΣF = 4.0; ΣF 2 : ΣF = 6.0.
Das Gerät für die Verwirklichung des Verfahrens zum Schaffen eines homogenen Luftstromes
wirkt folgendermaßen: Der Luftstrom wird mit dem Laufrad 3 radialen Typs, das
sich von dem Elektromotor 2 dreht, in den Spiralkanal 5 des Gehäuses 4 des Gebläses 1
gepreßt. Von dem Spiralkanal 5 wird der Luftstrom mit der Umlenkung 6 durch das Lamellengitter
15 des Linearberuhigers 14 abgeleitet, wo die 1. Stufe der Verringerung des Turbulenzgrades
verwirklicht wird, und kommt in das Brennergehäuse 8, wo die 2. Stufe der
Verringerung des Turbulenzgrades verwirklicht wird, wenn der Luftstrom durch das Zylindergitter
23 des Rohrberuhigers 22 geht. Es folgt gegebenenfalls noch ein Kreisberuhiger
26 in Form eines mit kleinen Löchern 28 versehenen Gitters 27.The device for implementing the method of creating a homogeneous air flow
acts as follows: The air flow is with the
Nach dem Rohrberuhiger 22 im Ausgangsschnitt des Zylindergitters 23, das dem Verteilerelement
13 parallel ist, wird der Luftstrom mit hohem Homogenitätsgrad charakterisiert. Die
Homogenität bleibt auch hinter den Luftlöchern 31 in der Brennzone des Treibgases erhalten.After the
Claims (10)
- A method for creating a homogenous air current by means of a structural change, wherein the air current is pressed into the spiral channel (5) of the fan housing (4) by the impeller (3) of a fan (1) and then conveyed into a laterally arranged burner housing (8) after an approximately perpendicular deflection (6), wherein said air current flows into the burner zone of a fan burner through air holes (31) in a distribution element (13),
characterized in
an at least 2-stage reduction of the degree of turbulence, wherein at least two of the following 3 stages are utilized: 1. stage, a linear tranquilizer (14), preferably in the form of a lamellar screen (15), at the deflection (6) from the spiral channel (5) to the burner housing (8); 2. stage, a tubular tranquilizer (22), preferably in the form of a cylindrical screen (23) that is open on the end face pointing to the distribution element (13), in the burner housing (8); 3. stage, a circular tranquilizer (26) in the form of a screen (27) that is provided with small holes (28) and homogenizes the air current upstream of the distribution element (13). - The method according to Claim 1,
characterized in that
the 2-stage reduction of the degree of turbulence of the air current is realized in accordance with the following geometric conditions:for the 1. stage:M1 : M = (1÷3):(1÷15), preferably M1 : M = 1 : 10;ΣF1 : ΣF = 1÷8, preferably ΣF1 : ΣF = 4;for the 2. stage:M2 : M = (1÷3) : (1÷15), preferably M2 : M = 1 : 10;ΣF2 : ΣF = 3÷12, preferably ΣF2 : ΣF = 6; - A device for creating a homogenous air current, comprising a fan (1) with an electric motor (2), a radial impeller (3), a fan housing (4) with a spiral channel (5), a deflection (6) that is directed toward the side of the electric motor and a burner housing (8) with a lateral cutout (9) for connecting the deflection (6), a rear bottom (10) with a central opening (11) for a fuel lance (12) and an oppositely arranged distribution element (13) in the form of a disk provided with air holes (31),
characterized in that
at least two of the following 3 stages are installed at the deflection (6) in order to realize the at least 2-stage reduction of the degree of turbulence: 1. stage, a linear tranquilizer (14), preferably in the form of a lamellar screen (15); 2. stage, an axially symmetrically mounted tubular tranquilizer (22) in the form of a cylindrical screen (23) with slots (24) that preferably extend longitudinally in the burner housing (8); 3. stage, a circular tranquilizer (26) in the form of a screen (27) with small holes (28) upstream of the distribution element (13). - The device according to Claim 3,
characterized in that
the cylindrical screen (23) of the tubular tranquilizer (22) has openings of arbitrary shape which fulfill the following condition:M'2 : M1 = (1÷3): (1÷15), preferably M'2 : M1 = 1 : 10 ;ΣF'2 : ΣF = 3÷12, preferably ΣF'2 : ΣF = 6; - The device according to Claim 3,
characterized in that
the cylindrical screen (23) of the tubular tranquilizer (22) has a closed end section (25). - The device according to Claim 3,
characterized in that
the cylindrical screen (23) of the tubular tranquilizer (22) is stationarily mounted on the bottom (10) of the burner housing (8). - The device according to Claim 3,
characterized in that
the cylindrical screen (23) of the tubular tranquilizer (22) is mounted on the distribution element (13) and forms a removable unit together with said distribution element. - The device according to Claim 3,
characterized in that
the cylindrical screen (23) of the tubular tranquilizer (22) and the distribution element (13) form a collectively fabricated unit. - The device according to Claim 3,
characterized in that
a screen-like tubular pressure reducer (29) is additionally arranged in the cylindrical screen (23) of the tubular tranquilizer (22), wherein said pressure reducer is realized geometrically similar to the cylindrical screen (23) of the tubular tranquilizer (22). - The device according to Claim 9,
characterized in that
the tubular pressure reducer (29) is arranged outside the tubular tranquilizer (22).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19948876A DE19948876C2 (en) | 1999-10-08 | 1999-10-08 | Process for creating a homogeneous air flow in a forced draft burner and device for its implementation |
DE19948876 | 1999-10-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1091171A1 EP1091171A1 (en) | 2001-04-11 |
EP1091171B1 true EP1091171B1 (en) | 2004-02-25 |
Family
ID=7925194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00120625A Expired - Lifetime EP1091171B1 (en) | 1999-10-08 | 2000-09-21 | Method for the generation of a homogeneous air flow in a forced-draft burner and device for its realization |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1091171B1 (en) |
AT (1) | ATE260441T1 (en) |
CZ (1) | CZ296290B6 (en) |
DE (2) | DE19948876C2 (en) |
ES (1) | ES2214202T3 (en) |
PL (1) | PL192918B1 (en) |
TR (1) | TR200002928A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10327391B3 (en) | 2003-06-18 | 2004-12-16 | Bbt Thermotechnik Gmbh | Mixer unit for a gas- or oil-fired central heating burner has chamber with a fuel supply harmonisation unit with numerous fine apertures |
CN111780109B (en) * | 2020-07-16 | 2022-04-12 | 东北大学 | Ultra-low-emission swirl oxygen-enriched flameless combustor and use method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE790918A (en) * | 1971-11-18 | 1973-03-01 | Palm Bjorn Olov Magnus | METHOD AND DEVICE FOR REDUCING THE DYNAMIC PRESSURE OF THE COMBUSTION AIR AT THE BURNER HEAD OF A COMBUSTIBLE OIL CONSUMING APPLIANCE |
JPS5296420A (en) * | 1976-02-10 | 1977-08-13 | Mitsubishi Heavy Ind Ltd | Burner |
DE7823246U1 (en) * | 1978-08-03 | 1978-11-09 | Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg | BURNERS FOR LIQUID OR GASEOUS FUEL |
DE3024225A1 (en) * | 1980-06-27 | 1982-01-21 | Werner Dr. 8972 Sonthofen Röhrs | Radial-flow centrifugal blower - has outlet contg. parallel ducts arranged to provide even pressure distribution over outlet cross=section |
AT395762B (en) * | 1988-07-14 | 1993-03-25 | Vaillant Gmbh | GAS BURNER SUPPLIED WITH A COMBUSTION GAS-AIR MIXTURE |
US5184949A (en) * | 1990-09-07 | 1993-02-09 | R. W. Beckett Corporation | Oil burner and method |
DE19503781A1 (en) * | 1995-02-04 | 1996-08-08 | Buderus Heiztechnik Gmbh | Gas or oil burner air flow mixing system |
-
1999
- 1999-10-08 DE DE19948876A patent/DE19948876C2/en not_active Expired - Fee Related
-
2000
- 2000-09-21 ES ES00120625T patent/ES2214202T3/en not_active Expired - Lifetime
- 2000-09-21 DE DE50005397T patent/DE50005397D1/en not_active Expired - Lifetime
- 2000-09-21 EP EP00120625A patent/EP1091171B1/en not_active Expired - Lifetime
- 2000-09-21 AT AT00120625T patent/ATE260441T1/en active
- 2000-10-03 CZ CZ20003646A patent/CZ296290B6/en not_active IP Right Cessation
- 2000-10-06 PL PL343017A patent/PL192918B1/en not_active IP Right Cessation
- 2000-10-09 TR TR2000/02928A patent/TR200002928A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1091171A1 (en) | 2001-04-11 |
PL343017A1 (en) | 2001-04-09 |
DE50005397D1 (en) | 2004-04-01 |
ES2214202T3 (en) | 2004-09-16 |
DE19948876C2 (en) | 2003-06-26 |
PL192918B1 (en) | 2006-12-29 |
DE19948876A1 (en) | 2001-04-19 |
TR200002928A2 (en) | 2001-10-22 |
CZ296290B6 (en) | 2006-02-15 |
ATE260441T1 (en) | 2004-03-15 |
CZ20003646A3 (en) | 2002-07-17 |
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