EP3327350A1 - Gas mixer for ethanol burner - Google Patents

Gas mixer for ethanol burner Download PDF

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Publication number
EP3327350A1
EP3327350A1 EP16306559.2A EP16306559A EP3327350A1 EP 3327350 A1 EP3327350 A1 EP 3327350A1 EP 16306559 A EP16306559 A EP 16306559A EP 3327350 A1 EP3327350 A1 EP 3327350A1
Authority
EP
European Patent Office
Prior art keywords
mixer
ethanol
tank
opening
inlet
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.)
Granted
Application number
EP16306559.2A
Other languages
German (de)
French (fr)
Other versions
EP3327350B1 (en
Inventor
Alain Michel Delaite
Jean Francois Decourteix
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Individual
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Individual
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Publication date
Priority to DK16306559.2T priority Critical patent/DK3327350T3/en
Priority to EP16306559.2A priority patent/EP3327350B1/en
Priority to PT16306559T priority patent/PT3327350T/en
Priority to HUE16306559 priority patent/HUE044360T2/en
Application filed by Individual filed Critical Individual
Priority to PL16306559T priority patent/PL3327350T3/en
Priority to SI201630277T priority patent/SI3327350T1/en
Priority to RS20190693A priority patent/RS58940B1/en
Priority to ES16306559T priority patent/ES2732626T3/en
Priority to PCT/EP2017/080032 priority patent/WO2018095964A1/en
Priority to CA3064191A priority patent/CA3064191A1/en
Publication of EP3327350A1 publication Critical patent/EP3327350A1/en
Application granted granted Critical
Publication of EP3327350B1 publication Critical patent/EP3327350B1/en
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Anticipated expiration legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/126—Catalytic elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/02—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
    • F23D5/04—Pot-type evaporators, i.e. using a partially-enclosed combustion space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/123—Inserts promoting evaporation

Definitions

  • the invention relates to an ethanol burner.
  • the invention relates to an ethanol burner equipped with a mixer.
  • An ethanol burner is a primary or auxiliary heating device operating by combustion of ethanol or a mixture of ethanol.
  • ethanol burners have several disadvantages.
  • ethanol burners produce carbon dioxide (by burning ethanol in the presence of oxygen) and sometimes carbon monoxide, which is dangerous for health (household intoxication that can be fatal).
  • this ethanol burner does not solve the disadvantage relating to the production of carbon dioxide and carbon monoxide, and has a heat output that can be increased.
  • the invention aims to overcome at least some of the disadvantages of known ethanol burners.
  • the invention aims to provide, in at least one embodiment of the invention, an ethanol burner having a better heat yield.
  • the invention also aims to provide, in at least one embodiment, an ethanol burner for reducing the emission of carbon dioxide and carbon monoxide in the open air.
  • the invention also aims to provide, in at least one embodiment, a Ethanol burner whose air supply can be regulated.
  • the invention relates to an ethanol burner comprising an ethanol-fed tank and a gas mixer, said gas mixer being characterized in that it comprises two hollow elements in the form of a truncated cone or a truncated pyramid of identical bases, respectively said first hollow element and second hollow element, the first hollow element comprising a first opening, said inlet of the mixer, disposed above the tank and a second opening of greater size at the inlet of the mixer, and the second hollow element comprising a first opening, said output of the mixer, and a second opening of greater size at the outlet of the mixer, the two hollow elements being integrally connected at their respective second openings.
  • a burner according to the invention therefore makes it possible, by virtue of the presence and geometry of the gas mixer, to improve the supply of air to the gas mixture in the burner (and therefore to increase the presence of oxygen necessary for the combustion), and thus improve the quality of the gas mixture in combustion.
  • the combustion is no longer in the open air and is more controlled.
  • the air supply is improved by forming a vacuum at the outlet of the mixer due to combustion, which causes an air inlet at the tank.
  • the burner has a better heat output, and releases less carbon dioxide and carbon monoxide in the open air.
  • combustion is better controlled, the production of carbon monoxide is greatly reduced, which makes it possible to reduce the risks of intoxication.
  • the output of the mixer has an area, delimited by its contours, equal to at least twice the area of the inlet of the mixer.
  • the geometry of the device makes it possible to improve the entry of air at the level of the tank and thus to allow the improvement of the ethanol combustion by means of a gas mixture of better quality. .
  • the vessel comprises an opening of identical shape at the inlet of the mixer and of dimensions greater than the inlet of the mixer so that a part of the mixer is arranged in the interior volume formed by the walls of the tank.
  • the air inlet is carried out uniformly in the tank by the space formed between the inlet of the mixer and the opening of the tank, which allows an improvement in the combustion of the fuel. ethanol thanks to a gas mixture of better quality.
  • an ethanol burner according to the invention comprises means for adjusting the height of the gas mixer relative to the opening of the tank.
  • the height adjustment means of the mixer can adjust the air inlet into the tank and thus regulate the gas mixture.
  • the adjustment means make it possible to adapt the position of the gas mixer to the level of ethanol present in the tank, either when the level drops due to the combustion of ethanol, or to adapt to a larger feed. or less important of the tank in ethanol, either to adapt to the desired heating by the user.
  • an ethanol burner according to the invention comprises an autocatalysis plate fixed in a lower part of the tank, and extending at least partly in the internal volume formed by the hollow elements of the mixer.
  • the autocatalyst plate being at least partly in the interior volume formed by the hollow elements of the mixer, the combustion of ethanol is improved because it occurs inside the mixer.
  • the invention also relates to an ethanol burner characterized in combination by all or some of the characteristics mentioned above or below.
  • the ethanol burner is shown in normal operating configuration, in an orientation allowing normal use.
  • the figures 1 and 2 schematically represent an ethanol burner according to an embodiment of the invention, respectively side (left) and front.
  • the ethanol burner comprises a tank 5, here in the form of a right prism with a triangular base whose upper rectangular face directed upwards is empty, thus forming an opening of the tank 5.
  • the tank 5 thus forms an open hollow container fed into its lower part, at the edge opposite its upper face, by a conduit 7 ethanol supply.
  • the burner does not comprise a supply duct and is filled for example manually by the opening formed by the upper face.
  • the ethanol burner further comprises an autocatalyst plate 2 attached to the bottom of the tank 5 and extending perpendicularly to the opening of the tank 5.
  • the autocatalytic plate 2 extends beyond the volume formed by the tank 5.
  • the plate 2 of autocatalyse is a conductive plate, in particular a metal plate, preferably pierced with holes and comprising inverted V-shaped notches in its lower part in contact with the bottom of the tank 5.
  • the ethanol burner also comprises a gas mixer 1 formed of two hollow members, a first hollow member and a second truncated cone-shaped hollow member 12, particularly in this pyramid-shaped embodiment with a rectangular base. truncated.
  • the hollow elements may be truncated cones of revolution or truncated polygonal base pyramids.
  • the bases of the hollow elements are empty and thus form openings.
  • the first hollow element comprises a first opening, called inlet 9 of the mixer, arranged facing the opening of the tank 5, and a second opening.
  • the second hollow element 12 comprises a first opening, called outlet 3 of the mixer, and a second opening.
  • the two hollow elements are integrally connected to each other by their second openings at a junction 14, so that the mixer 1 forms a tapered chimney above the tank 5, sealed between the inlet 9 of the mixer and the output 3 of the mixer: in particular, the two second openings are connected together sealingly.
  • the two second openings have identical shapes and dimensions.
  • the dimensions of the mixer 1 are adapted to the shape of the dimensions of the tank 5 above which it is arranged: in particular, the inlet 9 of the mixer is of identical shape to the opening of the tank 5, and of dimensions lower. In addition, the mixer 1 is arranged at least partly in the volume formed by the walls of the tank 5.
  • the mixer 1 thus makes it possible to form air inlets 8 represented by arrows indicating the direction of the circulation of the ambient air towards the interior of the tank. 5.
  • the air thus entered into the tank 5 forms, with the ethanol, a gas mixture 6 in the tank 5 and in the mixer 1 via the inlet 9 of the mixer, at the level of the autocatalysis plate 2.
  • the combustion gases formed rise up the mixer 1 and escape through the outlet 3 of the mixer.
  • This escape of the combustion gases forms a vacuum which increases the supply of air at the air inlets 8 of the burner and thus improves the air supply of the gaseous mixture, in particular of oxygen as combustion ratio oxidant.
  • the outlet 3 of the mixer has an area delimited by its contours equal to at least twice the area of the inlet 9 of the mixer.
  • the gas mixture and the combustion gases are confined in the mixer 1 which improves combustion and thus reduce the release of carbon dioxide and carbon monoxide.
  • the ethanol fills the bottom of the tank 5 to a level 4 of the tank 5.
  • feeding the tank 5 ethanol keeps this level constant in the tank 5.
  • the level 4 ethanol is for example located at a height of 10 mm for an ethanol burner with a power of 8kW.
  • the mixer 1 is for example fixed to the tank 5 by two threaded bolts over their entire height. Two threaded supports are fixed on the tank, and two supports are fixed on the gas mixer and drilled to the diameters of the bolts.
  • the ethanol burner comprises means for adjusting the height of the mixer 1.
  • the adjustment means make it possible to increase or reduce the air supply through the air inlets 8 .
  • the height adjustment means of the gas mixer 1 make it possible to adapt the height of the mixer 1 to the level of ethanol remaining in 5.
  • the bolts can be rotated to raise or lower the gas mixer 1 through the thread / tapping assembly.
  • the gas mixer may be adapted to other types of gas burners than that shown, as long as the tank has a configured opening (in terms of shapes and dimensions) to adapt the gas mixer.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

L'invention concerne un brûleur à éthanol, comprenant une cuve (5) alimentée en éthanol et un mélangeur (1) de gaz, ledit mélangeur de gaz étant caractérisé en ce qu'il comprend deux éléments creux en forme de cône tronqué ou de pyramide tronquée de bases identiques, dits respectivement premier élément (10) creux et deuxième élément (12) creux, le premier élément (10) creux comprenant une première ouverture, dite entrée (9) du mélangeur, disposée au-dessus de la cuve (5) et une deuxième ouverture de dimension supérieure à l'entrée (9) du mélangeur, et le deuxième élément (12) creux comprenant une première ouverture, dite sortie (3) du mélangeur, et une deuxième ouverture de dimension supérieure à la sortie (3) du mélangeur, les deux éléments creux étant reliées solidairement au niveau de leurs deuxièmes ouvertures respectives.The invention relates to an ethanol burner, comprising a tank (5) fed with ethanol and a mixer (1) of gas, said gas mixer being characterized in that it comprises two hollow elements in the form of truncated cone or pyramid truncated identical bases, respectively said first element (10) hollow and second element (12) hollow, the first element (10) hollow comprising a first opening, said inlet (9) of the mixer, disposed above the tank (5); ) and a second opening of greater size than the inlet (9) of the mixer, and the second hollow element (12) comprising a first opening, said outlet (3) of the mixer, and a second opening of greater size than the outlet ( 3) of the mixer, the two hollow elements being integrally connected at their respective second openings.

Description

1. Domaine technique de l'invention1. Technical field of the invention

L'invention concerne un brûleur à éthanol. En particulier, l'invention concerne un brûleur à éthanol équipé d'un mélangeur.The invention relates to an ethanol burner. In particular, the invention relates to an ethanol burner equipped with a mixer.

2. Arrière-plan technologique2. Technological background

Un brûleur à éthanol est un dispositif de chauffage principal ou d'appoint fonctionnant par combustion d'éthanol ou d'un mélange composé d'éthanol.An ethanol burner is a primary or auxiliary heating device operating by combustion of ethanol or a mixture of ethanol.

Les brûleurs à éthanol actuels présentent toutefois plusieurs inconvénients. Notamment, les brûleurs à éthanol produisent du dioxyde de carbone (par combustion d'éthanol en présence d'oxygène) et parfois du monoxyde de carbone, dangereux pour la santé (intoxication domestiques pouvant être mortelles).Current ethanol burners, however, have several disadvantages. In particular, ethanol burners produce carbon dioxide (by burning ethanol in the presence of oxygen) and sometimes carbon monoxide, which is dangerous for health (household intoxication that can be fatal).

En outre, les brûleurs à éthanol actuels présentent un rendement calorifique relativement faible qui entraîne une forte consommation d'éthanol pour le chauffage. Pour améliorer ce rendement calorifique, une solution a été proposée par M. Alain Delaite, co-inventeur de la présente demande, grâce à un brûleur à éthanol est décrit dans la demande de brevet FR2956722 A1 .In addition, current ethanol burners have a relatively low heat yield which results in a high consumption of ethanol for heating. To improve this heat yield, a solution has been proposed by Mr. Alain Delaite, co-inventor of the present application, with an ethanol burner is described in the patent application FR2956722 A1 .

Toutefois, ce brûleur à éthanol ne permet pas de résoudre l'inconvénient relatif à la production de dioxyde de carbone et de monoxyde de carbone, et présente un rendement calorifique qui peut être augmenté.However, this ethanol burner does not solve the disadvantage relating to the production of carbon dioxide and carbon monoxide, and has a heat output that can be increased.

Les inventeurs ont donc cherché une solution à ces inconvénients.The inventors have therefore sought a solution to these disadvantages.

3. Objectifs de l'invention3. Objectives of the invention

L'invention vise à pallier au moins certains des inconvénients des brûleurs à éthanol connus.The invention aims to overcome at least some of the disadvantages of known ethanol burners.

En particulier, l'invention vise à fournir, dans au moins un mode de réalisation de l'invention, un brûleur à éthanol présentant un meilleur rendement calorifique.In particular, the invention aims to provide, in at least one embodiment of the invention, an ethanol burner having a better heat yield.

L'invention vise aussi à fournir, dans au moins un mode de réalisation, un brûleur à éthanol permettant la réduction de l'émission de dioxyde de carbone et de monoxyde de carbone à l'air libre.The invention also aims to provide, in at least one embodiment, an ethanol burner for reducing the emission of carbon dioxide and carbon monoxide in the open air.

L'invention vise aussi à fournir, dans au moins un mode de réalisation, un brûleur à éthanol dont l'alimentation en air peut être régulée.The invention also aims to provide, in at least one embodiment, a Ethanol burner whose air supply can be regulated.

4. Exposé de l'invention4. Presentation of the invention

Pour ce faire, l'invention concerne un brûleur à éthanol, comprenant une cuve alimentée en éthanol et un mélangeur de gaz, ledit mélangeur de gaz étant caractérisé en ce qu'il comprend deux éléments creux en forme de cône tronqué ou de pyramide tronquée de bases identiques, dits respectivement premier élément creux et deuxième élément creux, le premier élément creux comprenant une première ouverture, dite entrée du mélangeur, disposée au-dessus de la cuve et une deuxième ouverture de dimension supérieure à l'entrée du mélangeur, et le deuxième élément creux comprenant une première ouverture, dite sortie du mélangeur, et une deuxième ouverture de dimension supérieure à la sortie du mélangeur, les deux éléments creux étant reliées solidairement au niveau de leurs deuxièmes ouvertures respectives.To do this, the invention relates to an ethanol burner comprising an ethanol-fed tank and a gas mixer, said gas mixer being characterized in that it comprises two hollow elements in the form of a truncated cone or a truncated pyramid of identical bases, respectively said first hollow element and second hollow element, the first hollow element comprising a first opening, said inlet of the mixer, disposed above the tank and a second opening of greater size at the inlet of the mixer, and the second hollow element comprising a first opening, said output of the mixer, and a second opening of greater size at the outlet of the mixer, the two hollow elements being integrally connected at their respective second openings.

Un brûleur selon l'invention permet donc, grâce à la présence et à la géométrie du mélangeur de gaz, d'améliorer l'alimentation en air du mélange gazeux dans le brûleur (et donc d'augmenter la présence d'oxygène nécessaire à la combustion), et ainsi améliorer la qualité du mélange gazeux en combustion. En outre, la combustion ne se fait plus à l'air libre et est davantage contrôlée. L'alimentation en air est améliorée par formation d'une dépression en sortie du mélangeur du fait de la combustion, qui entraine une entrée d'air au niveau de la cuve.A burner according to the invention therefore makes it possible, by virtue of the presence and geometry of the gas mixer, to improve the supply of air to the gas mixture in the burner (and therefore to increase the presence of oxygen necessary for the combustion), and thus improve the quality of the gas mixture in combustion. In addition, the combustion is no longer in the open air and is more controlled. The air supply is improved by forming a vacuum at the outlet of the mixer due to combustion, which causes an air inlet at the tank.

Le brûleur a ainsi un meilleur rendement calorifique, et relâche moins de dioxyde de carbone et de monoxyde de carbone à l'air libre. En particulier, la combustion étant mieux contrôlée, la production de monoxyde de carbone est fortement diminuée ce qui permet la réduction des risques d'intoxication.The burner has a better heat output, and releases less carbon dioxide and carbon monoxide in the open air. In particular, since combustion is better controlled, the production of carbon monoxide is greatly reduced, which makes it possible to reduce the risks of intoxication.

Selon des modes de réalisation préférentiels :

  • les deux deuxièmes ouvertures sont de formes et de dimensions identiques,
  • le mélangeur de gaz forme une cheminée de forme fuselée au-dessus de la cuve, étanche entre l'entrée du mélangeur et la sortie du mélangeur,
  • les deux deuxièmes ouvertures sont reliées entre elles de façon étanche.
According to preferred embodiments:
  • the two second openings are of identical shapes and dimensions,
  • the gas mixer forms a tapered chimney above the tank, sealed between the inlet of the mixer and the outlet of the mixer,
  • the two second openings are connected together in a sealed manner.

Avantageusement et selon l'invention, la sortie du mélangeur a une aire, délimitée par ses contours, égale à au moins deux fois l'aire de l'entrée du mélangeur.Advantageously and according to the invention, the output of the mixer has an area, delimited by its contours, equal to at least twice the area of the inlet of the mixer.

Selon cet aspect de l'invention, la géométrie du dispositif permet d'améliorer l'entrée de l'air au niveau de la cuve et ainsi de permettre l'amélioration de la combustion de l'éthanol grâce à un mélange gazeux de meilleure qualité.According to this aspect of the invention, the geometry of the device makes it possible to improve the entry of air at the level of the tank and thus to allow the improvement of the ethanol combustion by means of a gas mixture of better quality. .

Avantageusement et selon l'invention, la cuve comprend une ouverture de forme identique à l'entrée du mélangeur et de dimensions supérieures à l'entrée du mélangeur de sorte à ce qu'une partie du mélangeur soit disposée dans le volume intérieur formé par les parois de la cuve.Advantageously and according to the invention, the vessel comprises an opening of identical shape at the inlet of the mixer and of dimensions greater than the inlet of the mixer so that a part of the mixer is arranged in the interior volume formed by the walls of the tank.

Selon cet aspect de l'invention, l'entrée d'air s'effectue uniformément dans la cuve par l'espace formé entre l'entrée du mélangeur et l'ouverture de la cuve, ce qui permet une amélioration de la combustion de l'éthanol grâce à un mélange gazeux de meilleure qualité.According to this aspect of the invention, the air inlet is carried out uniformly in the tank by the space formed between the inlet of the mixer and the opening of the tank, which allows an improvement in the combustion of the fuel. ethanol thanks to a gas mixture of better quality.

Avantageusement, un brûleur à éthanol selon l'invention comprend des moyens de réglage de la hauteur du mélangeur de gaz par rapport à l'ouverture de la cuve.Advantageously, an ethanol burner according to the invention comprises means for adjusting the height of the gas mixer relative to the opening of the tank.

Selon cet aspect de l'invention, les moyens de réglage de la hauteur du mélangeur permettent de régler l'entrée d'air dans la cuve et ainsi de réguler le mélange gazeux. En outre, les moyens de réglage permettent d'adapter la position du mélangeur de gaz au niveau d'éthanol présent dans la cuve, soit lorsque le niveau descend du fait de la combustion d'éthanol, soit pour s'adapter à une alimentation plus ou moins importante de la cuve en éthanol, soit pour s'adapter au chauffage désiré par l'utilisateur.According to this aspect of the invention, the height adjustment means of the mixer can adjust the air inlet into the tank and thus regulate the gas mixture. In addition, the adjustment means make it possible to adapt the position of the gas mixer to the level of ethanol present in the tank, either when the level drops due to the combustion of ethanol, or to adapt to a larger feed. or less important of the tank in ethanol, either to adapt to the desired heating by the user.

Avantageusement, un brûleur à éthanol selon l'invention comprend une plaque d'autocatalyse fixée dans une partie inférieure de la cuve, et s'étendant au moins en partie dans le volume intérieur formé par les éléments creux du mélangeur.Advantageously, an ethanol burner according to the invention comprises an autocatalysis plate fixed in a lower part of the tank, and extending at least partly in the internal volume formed by the hollow elements of the mixer.

Selon cet aspect de l'invention, la plaque d'autocatalyse se trouvant au moins en partie dans le volume intérieure formé par les éléments creux du mélangeur, la combustion de l'éthanol est améliorée car elle se produit à l'intérieur du mélangeur.According to this aspect of the invention, the autocatalyst plate being at least partly in the interior volume formed by the hollow elements of the mixer, the combustion of ethanol is improved because it occurs inside the mixer.

L'invention concerne également un brûleur à éthanol caractérisé en combinaison par tout ou partie des caractéristiques mentionnées ci-dessus ou ci-après.The invention also relates to an ethanol burner characterized in combination by all or some of the characteristics mentioned above or below.

5. Liste des figures5. List of figures

D'autres buts, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante donnée à titre uniquement non limitatif et qui se réfère aux figures annexées dans lesquelles :

  • la figure 1 est une vue schématique de côté gauche d'un brûleur à éthanol selon un mode de réalisation de l'invention,
  • la figure 2 est une vue schématique de face d'un brûleur à éthanol selon un mode de réalisation de l'invention.
Other objects, features and advantages of the invention will become apparent on reading the following description given solely by way of non-limiting example and which refers to the appended figures in which:
  • the figure 1 is a schematic left-side view of an ethanol burner according to one embodiment of the invention,
  • the figure 2 is a schematic front view of an ethanol burner according to one embodiment of the invention.

6. Description détaillée d'un mode de réalisation de l'invention6. Detailed description of an embodiment of the invention

Les réalisations suivantes sont des exemples. Bien que la description se réfère à un ou plusieurs modes de réalisation, ceci ne signifie pas nécessairement que chaque référence concerne le même mode de réalisation, ou que les caractéristiques s'appliquent seulement à un seul mode de réalisation. De simples caractéristiques de différents modes de réalisation peuvent également être combinées pour fournir d'autres réalisations. Sur les figures, les échelles et les proportions ne sont pas strictement respectées et ce, à des fins d'illustration et de clarté.The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined to provide other embodiments. Figures, scales and proportions are not strictly adhered to for the purpose of illustration and clarity.

Sur les figures, le brûleur à éthanol est représenté en configuration de fonctionnement normal, dans une orientation permettant une utilisation normale.In the figures, the ethanol burner is shown in normal operating configuration, in an orientation allowing normal use.

Les figures 1 et 2 représentent schématiquement un brûleur à éthanol selon un mode de réalisation de l'invention, respectivement de côté (gauche) et de face.The figures 1 and 2 schematically represent an ethanol burner according to an embodiment of the invention, respectively side (left) and front.

Le brûleur à éthanol comprend une cuve 5, ici en forme de prisme droit à base triangulaire dont la face rectangulaire supérieure dirigée vers le haut est vide, formant ainsi une ouverture de la cuve 5. La cuve 5 forme ainsi un récipient creux ouvert alimenté dans sa partie inférieure, au niveau de l'arête opposée à sa face supérieure, par un conduit 7 d'alimentation en éthanol. Selon d'autres modes de réalisation, le brûleur ne comprend pas de conduit d'alimentation et est rempli par exemple manuellement par l'ouverture formée par la face supérieure.The ethanol burner comprises a tank 5, here in the form of a right prism with a triangular base whose upper rectangular face directed upwards is empty, thus forming an opening of the tank 5. The tank 5 thus forms an open hollow container fed into its lower part, at the edge opposite its upper face, by a conduit 7 ethanol supply. According to other embodiments, the burner does not comprise a supply duct and is filled for example manually by the opening formed by the upper face.

Le brûleur à éthanol comprend en outre une plaque 2 d'autocatalyse fixée au fond de la cuve 5 et s'étendant perpendiculairement à l'ouverture de la cuve 5. Dans ce mode de réalisation, la plaque 2 d'autocatalyse s'étend au-delà du volume formé par la cuve 5. La plaque 2 d'autocatalyse est une plaque conductrice, notamment métallique, de préférence percée de trous et comprenant des encoches en forme de V inversé dans sa partie inférieure en contact avec le fond de la cuve 5. Les avantages et le fonctionnement de cette plaque sont davantage décrits dans la demande de brevet FR2956722 A1 déjà citée.The ethanol burner further comprises an autocatalyst plate 2 attached to the bottom of the tank 5 and extending perpendicularly to the opening of the tank 5. In this embodiment, the autocatalytic plate 2 extends beyond the volume formed by the tank 5. The plate 2 of autocatalyse is a conductive plate, in particular a metal plate, preferably pierced with holes and comprising inverted V-shaped notches in its lower part in contact with the bottom of the tank 5. The advantages and the operation of this plate are further described in FIG. patent application FR2956722 A1 already mentioned.

Le brûleur à éthanol comprend aussi un mélangeur 1 de gaz, formé de deux éléments creux, un premier élément 10 creux et un deuxième élément 12 creux, en forme de cône tronqué, en particulier dans ce mode de réalisation en forme de pyramide à base rectangulaire tronqué. Selon d'autres modes de réalisation, les éléments creux peuvent être des cônes de révolution tronqués ou des pyramides à base polygonales tronquées.The ethanol burner also comprises a gas mixer 1 formed of two hollow members, a first hollow member and a second truncated cone-shaped hollow member 12, particularly in this pyramid-shaped embodiment with a rectangular base. truncated. According to other embodiments, the hollow elements may be truncated cones of revolution or truncated polygonal base pyramids.

Les bases des éléments creux sont vides et forment ainsi des ouvertures. Le premier élément 10 creux comprend une première ouverture, dite entrée 9 du mélangeur, disposé en regard de l'ouverture de la cuve 5, et une deuxième ouverture. Le deuxième élément 12 creux comprend une première ouverture, dite sortie 3 du mélangeur, et une deuxième ouverture.The bases of the hollow elements are empty and thus form openings. The first hollow element comprises a first opening, called inlet 9 of the mixer, arranged facing the opening of the tank 5, and a second opening. The second hollow element 12 comprises a first opening, called outlet 3 of the mixer, and a second opening.

Les deux éléments creux sont reliés solidairement entre eux par leur deuxième ouvertures au niveau d'une jonction 14, de sorte à ce que le mélangeur 1 forme une cheminée de forme fuselée au-dessus de la cuve 5, étanche entre l'entrée 9 du mélangeur et la sortie 3 du mélangeur : en particulier, les deux deuxièmes ouvertures sont reliées entre elles de façon étanche. Pour ce faire, les deux deuxièmes ouvertures ont des formes et des dimensions identiques.The two hollow elements are integrally connected to each other by their second openings at a junction 14, so that the mixer 1 forms a tapered chimney above the tank 5, sealed between the inlet 9 of the mixer and the output 3 of the mixer: in particular, the two second openings are connected together sealingly. To do this, the two second openings have identical shapes and dimensions.

Les dimensions du mélangeur 1 sont adaptées à la forme aux dimensions de la cuve 5 au-dessus de laquelle il est disposé : en particulier, l'entrée 9 du mélangeur est de forme identique à l'ouverture de la cuve 5, et de dimensions inférieures. En outre, le mélangeur 1 est disposé au moins en partie dans le volume formé par les parois de la cuve 5.The dimensions of the mixer 1 are adapted to the shape of the dimensions of the tank 5 above which it is arranged: in particular, the inlet 9 of the mixer is of identical shape to the opening of the tank 5, and of dimensions lower. In addition, the mixer 1 is arranged at least partly in the volume formed by the walls of the tank 5.

Le mélangeur 1 permet ainsi de former des entrées 8 d'air représentées par des flèches indiquant la direction de la circulation de l'air ambiant vers l'intérieur de la cuve 5. L'air ainsi entré dans la cuve 5 forme, avec l'éthanol, un mélange 6 gazeux dans la cuve 5 et dans le mélangeur 1 via l'entrée 9 du mélangeur, au niveau de la plaque 2 d'autocatalyse. Une fois le mélange 6 gazeux brûlé, les gaz de combustion formés remontent le mélangeur 1 et s'échappent par la sortie 3 du mélangeur. Cet échappement des gaz de combustion forme une dépression qui augmente l'alimentation en air au niveau des entrées 8 d'air du brûleur et ainsi améliore l'apport en air du mélange gazeux, notamment en oxygène comme comburant de la réaction de combustion. Pour permettre de maximiser cette dépression, la sortie 3 du mélangeur a une aire, délimitée par ses contours, égale à au moins deux fois l'aire de l'entrée 9 du mélangeur.The mixer 1 thus makes it possible to form air inlets 8 represented by arrows indicating the direction of the circulation of the ambient air towards the interior of the tank. 5. The air thus entered into the tank 5 forms, with the ethanol, a gas mixture 6 in the tank 5 and in the mixer 1 via the inlet 9 of the mixer, at the level of the autocatalysis plate 2. Once the gaseous mixture is burned, the combustion gases formed rise up the mixer 1 and escape through the outlet 3 of the mixer. This escape of the combustion gases forms a vacuum which increases the supply of air at the air inlets 8 of the burner and thus improves the air supply of the gaseous mixture, in particular of oxygen as combustion ratio oxidant. To maximize this depression, the outlet 3 of the mixer has an area delimited by its contours equal to at least twice the area of the inlet 9 of the mixer.

En particulier, pour un brûleur à éthanol d'une puissance de 8kW, les dimensions sont par exemple les suivantes :

  • entrée 9 du mélangeur rectangulaire (en mm) : 178x35 (soit 6230 mm2),
  • sortie 3 du mélangeur rectangulaire (en mm) : 193x70 (soit 13510 mm2).
In particular, for an ethanol burner with a power of 8 kW, the dimensions are for example the following:
  • input 9 of the rectangular mixer (in mm): 178x35 (or 6230 mm 2 ),
  • output 3 of the rectangular mixer (in mm): 193x70 (ie 13510 mm 2 ).

En outre, le mélange gazeux et les gaz de combustion sont confinés dans le mélangeur 1 ce qui permet d'améliorer la combustion et ainsi réduire le rejet de dioxyde de carbone et de monoxyde de carbone.In addition, the gas mixture and the combustion gases are confined in the mixer 1 which improves combustion and thus reduce the release of carbon dioxide and carbon monoxide.

L'éthanol remplit le fond de la cuve 5 jusqu'à un niveau 4 de la cuve 5. Dans le mode de réalisation représenté, l'alimentation de la cuve 5 en éthanol permet de maintenir ce niveau constant dans la cuve 5. Le niveau 4 d'éthanol est par exemple situé à une hauteur de 10 mm pour un brûleur à éthanol d'une puissance de 8kW.The ethanol fills the bottom of the tank 5 to a level 4 of the tank 5. In the embodiment shown, feeding the tank 5 ethanol keeps this level constant in the tank 5. The level 4 ethanol is for example located at a height of 10 mm for an ethanol burner with a power of 8kW.

Le mélangeur 1 est par exemple fixé à la cuve 5 par deux boulons filetés sur toute leur hauteur. Deux supports taraudés sont fixés sur la cuve, et deux supports sont fixés sur le mélangeur de gaz et percés aux diamètres des boulons.The mixer 1 is for example fixed to the tank 5 by two threaded bolts over their entire height. Two threaded supports are fixed on the tank, and two supports are fixed on the gas mixer and drilled to the diameters of the bolts.

Selon certains modes de réalisation de l'invention, le brûleur à éthanol comprend des moyens de réglage de la hauteur du mélangeur 1. Les moyens de réglages permettent d'augmenter ou de réduire l'arrivée d'air par les entrées 8 d'air. En outre, dans les modes de réalisation dans lesquels la cuve 5 n'est pas alimentée continuellement en éthanol, les moyens de réglage de la hauteur du mélangeur 1 de gaz permettent d'adapter la hauteur du mélangeur 1 au niveau d'éthanol restant dans la cuve 5. Par exemple, dans la fixation décrite au paragraphe précédent, les boulons peuvent être tournés pour faire monter ou descendre le mélangeur 1 de gaz grâce à l'ensemble filetage/taraudage.According to some embodiments of the invention, the ethanol burner comprises means for adjusting the height of the mixer 1. The adjustment means make it possible to increase or reduce the air supply through the air inlets 8 . In addition, in the embodiments in which the tank 5 is not fed continuously with ethanol, the height adjustment means of the gas mixer 1 make it possible to adapt the height of the mixer 1 to the level of ethanol remaining in 5. For example, in the fixing described in the previous paragraph, the bolts can be rotated to raise or lower the gas mixer 1 through the thread / tapping assembly.

Pour maintenir le mélangeur 1 de gaz et la cuve 5 ensemble, il est prévu deux contre-écrous par boulons pour bloquer le mélangeur 1 de gaz à la cuve 5.To maintain the gas mixer 1 and the tank 5 together, there are provided two locknuts per bolts to lock the gas mixer 1 to the tank 5.

L'invention ne se limite pas aux seuls modes de réalisation décrits. En particulier, le mélangeur de gaz peut-être adapté à d'autres types de brûleurs de gaz que celui représenté, du moment que la cuve présente une ouverture configurée (en termes de formes et de dimensions) pour y adapter le mélangeur de gaz.The invention is not limited to the embodiments described. In particular, the gas mixer may be adapted to other types of gas burners than that shown, as long as the tank has a configured opening (in terms of shapes and dimensions) to adapt the gas mixer.

Claims (5)

Brûleur à éthanol, comprenant une cuve (5) alimentée en éthanol et un mélangeur (1) de gaz, ledit mélangeur de gaz étant caractérisé en ce qu'il comprend deux éléments creux en forme de cône tronqué ou de pyramide tronquée de bases identiques, dits respectivement premier élément (10) creux et deuxième élément (12) creux, le premier élément (10) creux comprenant une première ouverture, dite entrée (9) du mélangeur, disposée au-dessus de la cuve (5) et une deuxième ouverture de dimension supérieure à l'entrée (9) du mélangeur, et le deuxième élément (12) creux comprenant une première ouverture, dite sortie (3) du mélangeur, et une deuxième ouverture de dimension supérieure à la sortie (3) du mélangeur, les deux éléments creux étant reliées solidairement au niveau de leurs deuxièmes ouvertures respectives.An ethanol burner, comprising a tank (5) fed with ethanol and a mixer (1) of gas, said gas mixer being characterized in that it comprises two hollow elements in the form of truncated cone or truncated pyramid of identical bases, respectively said first hollow element (10) and second hollow element (12), the first hollow element (10) comprising a first opening, said inlet (9) of the mixer, disposed above the tank (5) and a second opening greater than the inlet (9) of the mixer, and the second hollow element (12) comprising a first opening, said outlet (3) of the mixer, and a second opening of greater size than the outlet (3) of the mixer, the two hollow elements being integrally connected at their respective second openings. Brûleur à éthanol selon la revendication 1, caractérisé en ce que la sortie (3) du mélangeur a une aire, délimitée par ses contours, égale à au moins deux fois l'aire de l'entrée (9) du mélangeur.Ethanol burner according to claim 1, characterized in that the outlet (3) of the mixer has an area delimited by its contours equal to at least twice the area of the inlet (9) of the mixer. Brûleur à éthanol selon l'une des revendications 1 ou 2, caractérisé en ce que la cuve (5) comprend une ouverture de forme identique à l'entrée (9) du mélangeur et de dimensions supérieures à l'entrée (9) du mélangeur (1) de sorte à ce qu'une partie du mélangeur (1) soit disposée dans le volume intérieur formé par les parois de la cuve (5).Ethanol burner according to one of claims 1 or 2, characterized in that the tank (5) comprises an opening of identical shape to the inlet (9) of the mixer and of dimensions greater than the inlet (9) of the mixer (1) so that a portion of the mixer (1) is disposed in the interior volume formed by the walls of the vessel (5). Brûleur à éthanol selon la revendication 3, caractérisé en ce qu'il comprend des moyens de réglage de la hauteur du mélangeur (1) de gaz par rapport à l'ouverture de la cuve (5).Ethanol burner according to claim 3, characterized in that it comprises means for adjusting the height of the gas mixer (1) with respect to the opening of the tank (5). Brûleur à éthanol selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend une plaque (2) d'autocatalyse fixée dans une partie inférieure de la cuve (5), et s'étendant au moins en partie dans le volume intérieur formé par les éléments creux du mélangeur (1).Ethanol burner according to one of claims 1 to 4, characterized in that it comprises an autocatalyst plate (2) fixed in a lower part of the tank (5), and extending at least partly in the internal volume formed by the hollow elements of the mixer (1).
EP16306559.2A 2016-11-25 2016-11-25 Gas mixer for ethanol burner Active EP3327350B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
PT16306559T PT3327350T (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
HUE16306559 HUE044360T2 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
ES16306559T ES2732626T3 (en) 2016-11-25 2016-11-25 Ethanol burner gas mixer
PL16306559T PL3327350T3 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
EP16306559.2A EP3327350B1 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
RS20190693A RS58940B1 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
DK16306559.2T DK3327350T3 (en) 2016-11-25 2016-11-25 GAS BANDS FOR ETHANOL BURNS
SI201630277T SI3327350T1 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner
PCT/EP2017/080032 WO2018095964A1 (en) 2016-11-25 2017-11-22 Gas mixer for ethanol burner
CA3064191A CA3064191A1 (en) 2016-11-25 2017-11-22 Gas mixer for ethanol burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16306559.2A EP3327350B1 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner

Publications (2)

Publication Number Publication Date
EP3327350A1 true EP3327350A1 (en) 2018-05-30
EP3327350B1 EP3327350B1 (en) 2019-05-01

Family

ID=57517825

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Application Number Title Priority Date Filing Date
EP16306559.2A Active EP3327350B1 (en) 2016-11-25 2016-11-25 Gas mixer for ethanol burner

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EP (1) EP3327350B1 (en)
CA (1) CA3064191A1 (en)
DK (1) DK3327350T3 (en)
ES (1) ES2732626T3 (en)
HU (1) HUE044360T2 (en)
PL (1) PL3327350T3 (en)
PT (1) PT3327350T (en)
RS (1) RS58940B1 (en)
SI (1) SI3327350T1 (en)
WO (1) WO2018095964A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3082603A1 (en) * 2018-06-18 2019-12-20 Actinov FORCED AIR COMBUSTION AIR SUPPLY DEVICE FOR A COMBUSTION CHAMBER OF AN ETHANOL STOVE WITH A POWER EXCEEDING 4.5 KW NOT CONNECTED TO A BURNED GAS DISCHARGE DUCT

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054748A1 (en) * 2003-12-04 2005-06-16 Sacranie, Bashir Combustion device and method
FR2956722A1 (en) 2010-02-25 2011-08-26 Delaite Alain Michel Heating system, has supplying tube fixed at bottom of tank at center of its length, conducting plate provided with holes and V-shaped notches, where water/alcohol mixture is passed by tube and arrived in tank under plate between notches

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054748A1 (en) * 2003-12-04 2005-06-16 Sacranie, Bashir Combustion device and method
FR2956722A1 (en) 2010-02-25 2011-08-26 Delaite Alain Michel Heating system, has supplying tube fixed at bottom of tank at center of its length, conducting plate provided with holes and V-shaped notches, where water/alcohol mixture is passed by tube and arrived in tank under plate between notches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3082603A1 (en) * 2018-06-18 2019-12-20 Actinov FORCED AIR COMBUSTION AIR SUPPLY DEVICE FOR A COMBUSTION CHAMBER OF AN ETHANOL STOVE WITH A POWER EXCEEDING 4.5 KW NOT CONNECTED TO A BURNED GAS DISCHARGE DUCT

Also Published As

Publication number Publication date
WO2018095964A1 (en) 2018-05-31
SI3327350T1 (en) 2019-09-30
EP3327350B1 (en) 2019-05-01
CA3064191A1 (en) 2018-05-31
ES2732626T3 (en) 2019-11-25
RS58940B1 (en) 2019-08-30
PL3327350T3 (en) 2019-09-30
HUE044360T2 (en) 2019-10-28
PT3327350T (en) 2019-07-09
DK3327350T3 (en) 2019-07-08

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