FR3018899A1 - BURNER DEVICE WITH PRE GAS MIXTURE - Google Patents
BURNER DEVICE WITH PRE GAS MIXTURE Download PDFInfo
- Publication number
- FR3018899A1 FR3018899A1 FR1452252A FR1452252A FR3018899A1 FR 3018899 A1 FR3018899 A1 FR 3018899A1 FR 1452252 A FR1452252 A FR 1452252A FR 1452252 A FR1452252 A FR 1452252A FR 3018899 A1 FR3018899 A1 FR 3018899A1
- Authority
- FR
- France
- Prior art keywords
- gas
- fan
- venturi
- burner device
- air
- 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.)
- Pending
Links
Classifications
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- 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
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- 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
-
- 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
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- 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/188—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Dispositif de bruleur à pré mélange gaz, comportant un ventilateur (1) d'aspiration du mélange air/gaz, une vanne d'alimentation en gaz (2), un injecteur de gaz (3), et un de venturi (4) intercalé entre le injecteur (3) et le ventilateur (1) en sorte de créer une dépression sur la vanne de gaz (2). Le venturi (4) comporte une pièce mobile (40), apte à se déplacer sous l'action du ventilateur (1) et d'un ressort de rappel (43), le déplacement de la pièce mobile étant apte à modifier les sections des passages de gaz (41) et d'air (43). FigureGas pre-mixing burner device comprising a fan (1) for sucking up the air / gas mixture, a gas supply valve (2), a gas injector (3), and a venturi (4) interposed between the injector (3) and the fan (1) so as to create a depression on the gas valve (2). The venturi (4) comprises a movable part (40), able to move under the action of the fan (1) and a return spring (43), the displacement of the movable part being able to modify the sections of the gas (41) and air passages (43). figure
Description
La présente invention a pour objet un dispositif de bruleur à pré-mélange gaz. Un dispositif de bruleur à pré mélange gaz fonctionne avec ratio air/gaz constant, il comporte un venturi qui crée une 5 dépression sur la vanne gaz. Cette dépression est plus ou moins grande en fonction de la puissance demandée. Un tel dispositif présente toutefois un inconvénient, sachant que la dépression évolue au carré du débit, il est difficile d'obtenir un signal de dépression suffisant lorsque 10 l'on réduit le débit au-delà de 5. En effet, lorsque le débit est divisé par 5, la dépression est divisée par 25. Pour pallier cet inconvénient, et permettre de forts taux de modulation, il a été proposé de faire varier la section de l'aspiration de l'air de combustion et du gaz dans des 15 proportions équivalentes. Ceci est obtenu au travers de systèmes mécaniques généralement pilotés par des servomoteurs ou solénoïdes. Grace à la variation des sections, la dépression reste importante malgré une diminution du débit. La présente invention a pour but de résoudre 20 l'inconvénient précité sans faire appel à un pilotage ou toutes sources d'énergie extérieure. Le dispositif de bruleur à pré mélange gaz selon l'invention comporte un ventilateur d'aspiration du mélange air/gaz, une vanne d'alimentation en gaz, un injecteur de gaz, 25 et un Venturi intercalé entre ledit injecteur et ledit ventilateur en sorte de créer une dépression sur ladite vanne de gaz, et il se caractérise en ce que ledit comporte une pièce mobile, apte à se déplacer sous l'action dudit ventilateur et d'un ressort de rappel, le déplacement de ladite pièce mobile 30 étant apte à modifier les sections des passages de gaz et d'air. Les avantages et les caractéristiques du dispositif selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente une vue schématique.The present invention relates to a gas premix burner device. A gas premix burner device operates with constant air / gas ratio, it comprises a venturi which creates a depression on the gas valve. This depression is greater or less depending on the power required. Such a device however has a disadvantage, knowing that the depression evolves squared of the flow, it is difficult to obtain a sufficient vacuum signal when reducing the flow rate beyond 5. Indeed, when the flow is divided by 5, the depression is divided by 25. To overcome this disadvantage, and allow high modulation rates, it has been proposed to vary the section of the combustion air and gas suction in proportions equivalent. This is achieved through mechanical systems generally controlled by servomotors or solenoids. Thanks to the variation of the sections, the depression remains important in spite of a decrease of the flow. The object of the present invention is to solve the above-mentioned drawback without resorting to control or any external energy source. The gas premix burner device according to the invention comprises a suction fan of the air / gas mixture, a gas supply valve, a gas injector, and a Venturi interposed between said injector and said fan so that to create a depression on said gas valve, and it is characterized in that said comprises a movable part, able to move under the action of said fan and a return spring, the displacement of said movable part 30 being suitable to modify the sections of the gas and air passages. The advantages and characteristics of the device according to the invention will become more clearly apparent from the description which follows and which refers to the appended drawing, which represents a schematic view thereof.
35 Sur cette figure on peut voir que le dispositif de bruleur pré-mélange gaz comporte un ventilateur centrifuge 1 d'aspiration du mélange air/gaz, une électrovanne 2 de commande de gaz commandée par un moteur M, un injecteur de gaz 3 et un venturi 4. Selon l'invention, le venturi 4 comporte, en regard du ventilateur 1, une pièce 40, ou piston, mobile sous l'effet de dépression générée par le ventilateur 1, qui est apte, en fonction de sa position dans le venturi, à modifier la section des passages du gaz 41 et de l'air 42. On notera que la pièce mobile 40 est rappelée par un 10 ressort 43. Lorsque le débit du ventilateur 1 augmente, la pièce mobile 40 est aspirée par la dépression créée par le ventilateur, et se déplace vers celui-ci, ce qui permet d'agrandir les sections des passages 41 du gaz et de l'air.In this figure, it can be seen that the gas premix burner device comprises a centrifugal fan 1 for sucking in the air / gas mixture, a gas control solenoid valve 2 controlled by a motor M, a gas injector 3 and a venturi 4. According to the invention, the venturi 4 comprises, facing the fan 1, a piece 40, or piston, movable under the effect of depression generated by the fan 1, which is adapted, depending on its position in the venturi, to modify the section of the passages of the gas 41 and the air 42. Note that the moving part 40 is recalled by a spring 43. When the flow rate of the fan 1 increases, the moving part 40 is sucked by the depression created by the fan, and moves towards it, which enlarges the sections of the passages 41 of gas and air.
15 Lorsque le débit diminue, la pièce mobile 40 est rappelée par le ressort 43, ce qui réduit les sections des passages 4. On obtient donc un système venturi 4 qui s'adapte automatiquement en fonction du fonctionnement du ventilateur 1.When the flow rate decreases, the moving part 40 is returned by the spring 43, which reduces the sections of the passages 4. This gives a venturi system 4 which automatically adapts according to the operation of the fan 1.
Claims (1)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1452252A FR3018899A1 (en) | 2014-03-19 | 2014-03-19 | BURNER DEVICE WITH PRE GAS MIXTURE |
| FR1456766A FR3018900B1 (en) | 2014-03-19 | 2014-07-15 | BURNER DEVICE WITH PRE GAS MIX |
| EP15159682.2A EP2921777B1 (en) | 2014-03-19 | 2015-03-18 | Burner device with gas premix |
| US14/662,515 US20160069563A1 (en) | 2014-03-19 | 2015-03-19 | Device for burning pre-mixed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1452252A FR3018899A1 (en) | 2014-03-19 | 2014-03-19 | BURNER DEVICE WITH PRE GAS MIXTURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR3018899A1 true FR3018899A1 (en) | 2015-09-25 |
Family
ID=51688257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1452252A Pending FR3018899A1 (en) | 2014-03-19 | 2014-03-19 | BURNER DEVICE WITH PRE GAS MIXTURE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3018899A1 (en) |
-
2014
- 2014-03-19 FR FR1452252A patent/FR3018899A1/en active Pending
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