EP0994301A1 - Assembly of a device comprising a gas burner - Google Patents

Assembly of a device comprising a gas burner Download PDF

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Publication number
EP0994301A1
EP0994301A1 EP99402550A EP99402550A EP0994301A1 EP 0994301 A1 EP0994301 A1 EP 0994301A1 EP 99402550 A EP99402550 A EP 99402550A EP 99402550 A EP99402550 A EP 99402550A EP 0994301 A1 EP0994301 A1 EP 0994301A1
Authority
EP
European Patent Office
Prior art keywords
support
burner
nut
hearth
plate
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
EP99402550A
Other languages
German (de)
French (fr)
Other versions
EP0994301B1 (en
Inventor
Alain Nodet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brandt Industries SAS
Original Assignee
Brandt Cooking SAC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brandt Cooking SAC filed Critical Brandt Cooking SAC
Publication of EP0994301A1 publication Critical patent/EP0994301A1/en
Application granted granted Critical
Publication of EP0994301B1 publication Critical patent/EP0994301B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • 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
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • 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
    • 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
    • F23D14/64—Mixing devices; Mixing tubes with injectors

Definitions

  • the invention relates to a device comprising a burner with gas.
  • gas burner means producing a mixture of air and of gas and carrying out the combustion of this mixture.
  • gas burners are generally mounted above a hearth plate made for example of enamelled sheet or glass ceramic.
  • the burner gas generally has a burner body and a burner cap.
  • the axis of the injector is usually vertical.
  • the support is a piece in general metallic with a channel supplying gas to the injector.
  • the support carries additional means used with the burner such as a spark plug producing a spark to initiate combustion of the air and gas mixture, or even a thermocouple to detect the presence or absence of a flame and shut off the gas supply if there is no flame.
  • the support is necessarily placed under the hearth plate in order to free as much as possible the space above the hearth plate to protect against possible food overflows, the elements that the hearth plate covers. The location of the support under the hearth plate leads to its positioning by report below the hearth plate.
  • the burner in which air and gas are mixed for example in a so-called structure venturi with vertical axis, is located above the hearth plate and therefore positioned in relation to the top of the hearth plate.
  • the burner is positioned with respect to above the hearth plate and the injector is positioned, via the support, from below the hearth plate.
  • tolerance alignment of the injector and venturi axes we are forced to impose precise tolerances on the production of the hearth sheet and in particular on its thickness, which significantly increases its production cost.
  • the object of the invention is to propose a particular arrangement of the support which makes it possible to widen the tolerances of the hearth plate while respecting the alignment tolerance of the injector and burner axes.
  • the invention relates to a device comprising a gas burner mounted above a hearth plate, the gas arriving towards the burner through the hearth plate and being injected into the burner by an injector.
  • the device is characterized in that the injector is fixed to a support mounted from below the hearth plate and located under the hearth plate, in that the support is positioned relative to the top of the hearth plate and in that the support is held in this position.
  • the support thus positioned makes it possible to position the means appendices such as the spark plug and the thermocouple relative to the top hearth plate, which facilitates their positioning in relation to the flame area.
  • the invention is advantageously implemented in a burner said pot.
  • pot burner a burner in which the hearth plate forms with the burner body a channel allowing so-called primary air to arrive to the vicinity of the injector to be mixed with the gas leaving the injector.
  • the injector for this type of burner is located at the bottom a bowl directly formed in the hearth plate, hence the name "Pot burner”.
  • the gas burner shown in Figure 1 has a burner body 10 placed on a hearth plate 20 and a burner cap 30 placed on the burner body 10. the gas burner is supplied with air from above the hearth plate 20 and gas by an injector 40.
  • the body of the burner 10 is for example a part of revolution of axis 11 vertical.
  • the burner body has a flange 12 under which air, called primary air, enters the burner.
  • the venturi structure has a substantially cylindrical hole 14 or advantageously slightly tapered located in the burner body 10.
  • the truncated cone is of axis 11 and the top of the cone is located above the burner of such so that the hole 14 forms the converging part of the venturi.
  • the part diverging from the venturi is formed between an upper surface 15 of the body burner 10 and a underside 31 of the burner cap 30.
  • the surface 15 is substantially planar or advantageously in the form of a truncated cone very flared, the apex of which is above the upper surface 15.
  • the underside 31 of the burner cap 30 is substantially planar.
  • the injector 40 is located under the hole 14.
  • the injector 40 is a piece of substantially axis 42 revolution, also having a hole 41 of revolution and axis 42, through which the gas arrives at the burner.
  • the device according to the invention seeks to align axes 11 and 42 as best as possible.
  • the gas escapes from hole 41 upwards with a certain speed due to the pressure at which gas is delivered, pressure higher than pressure atmospheric.
  • the speed of the gas drives the primary air into the hole 14 then in the divergent part of the venturi. In this divergent part the mixture of air and gas is directed substantially radially with respect to axis 11 away from axis 11.
  • the premix of air and gas is performed both in the converging part and in the diverging part venturi.
  • the burner body 10 Downstream of the divergent part of the venturi, the burner body 10 has slots 16 covered by a surface 32 of the hat burner 30.
  • the premix escapes between these slots to ignite outside the burner body 10.
  • the secondary air arrives at the flames from above the flange 12.
  • the face 31 of the burner cap 30 is located lower than the face 32, so as to form a surface 33 substantially cylindrical and vertical in axis, which centers the burner cap 30 relative to the interior of the slots 16 of the burner body 10, so that the vertical axis of the surface 33 is substantially coincident with axis 11.
  • the injector 40 has in its lower part means to fix it on a support 50. These means comprise for example a thread 43 of axis 42 coming to be screwed in a thread 51 of the support 50. To simplify the description, we will consider that the axis 42 is also a axis of the support 50.
  • the means for fixing the injector 40 can also include, in the upper part of the injector 40, two flats or a hexagonal shape whose surfaces are parallel to the axis 42, in order to tighten the injector 40 on the support 50 using a suitable tool such than a wrench for example. Flats or hexagonal shape are not not shown in Figure 1.
  • the possibility of separating the injector 40 from the support 50 is necessary when the gas burner is designed to operate with different combustion gases such as gas butane or natural gas.
  • the hole 41 of the injector 40 is adapted to the gas restrained. If, on the contrary, the gas burner is only designed to use one only type of gas, the injector 40 and the support 50 may be one single mechanical part. In this case, we can also consider that the injector 40 is one piece, not with the support 50 but with a nut 60 used to immobilize the support. This nut 60 will be described in more detail later.
  • the hole 41 opens into a cavity 52 of the support 50.
  • the cavity 52 can be the end of a conduit bent not shown in Figure 1 and supplying the injector 40 with gas.
  • the bent duct most often having large dimensions by compared to the dimensions of the burner itself, makes the support relatively massive.
  • the support carries devices annexed to the gas burner, such as a spark plug 70 or a thermocouple, not shown. Spark plug 70 is shown Figure 1 in the form of a substantially cylindrical part with axis 71.
  • the axis 71 is substantially parallel to the axis 42.
  • the spark plug 70 is positioned by relative to the support 50 for example by means of a cylindrical part 72 entering a hole in the support 50 and a shoulder 73 belonging to the spark plug 70.
  • the shoulder 73 bears against a part 56 of the upper surface of the support 50.
  • the shoulder 72 and the part 56 are substantially perpendicular to the axis 71.
  • the candle 70 is held in position relative to the support 50, for example by means of a nut 74 applying the shoulder 73 against the part 56.
  • the candle crosses the hearth plate 20 and the top of the candle 70 is located near the slots 16, outside the burner body 10 so when the time comes, to create a spark to ignite the air mixture and of gas escaping between the slots 16.
  • the mounting of the spark plug 70 by relative to the support 50 makes it possible to precisely position the spark by compared to slots 16.
  • the nut 60 has substantially the shape of a shouldered shaft which once assembled is of axis 42. It is drilled and tapped right through by a internal thread 61 of axis 42. The largest diameter 64 of nut 60 is located in the upper portion. In the internal thread 61, a thread 53 belonging to the support 50 is screwed. A flat underside 62 of the nut 60 comes in abutment, when the thread 53 is fully screwed into the internal thread 61, against an upper face 54 of the support 50.
  • the faces 62 and 54 are by example substantially perpendicular to the axis 42 so that they constitute, when they are pressed against each other, a positioning precision of the support 50 relative to the nut 60 in the direction of the axis 42.
  • the smallest diameter 65 of the nut 60 passes through a hole 21 in the plate hearth 20.
  • the hole 21 is substantially of axis 42 when the support is assembled.
  • the diameter of the hole 21 is close to the smallest diameter 65 of the nut 60 so that only the smallest diameter 65 can pass through the hole 21.
  • a shoulder 63 of the nut 60 comes to bear against a face upper 22 of the hearth plate 20, so as to position so specifies the nut 50 relative to the upper face 22 of the hearth plate 20 in the direction of axis 42.
  • hole 21 The dimensions of hole 21 are smaller than those of supports 50. Consequently, the support 50 is mounted from below the hearth plate 20. The support 50 is nevertheless positioned relative to the above the hearth plate 20 by means of the nut 60.
  • a hard joint 80 that is to say slightly deformable, so improve the seal between the upper face 22 and the lower face 23 of the hearth plate 20.
  • the hard seal 80 has for example the shape of a washer whose internal diameter is close to the smallest diameter 65 of the nut 60.
  • the hardness of the seal 80 is chosen so as to maintain a positioning precise of the nut 60 relative to the upper face 22 when the nut 60 is clamped on the support 50.
  • the support 50 is positioned so precise with respect to the upper face 22 of the hearth plate 20. This positioning allows you to know and therefore control the position of the hole 41 of the injector 40 relative to the top of the hearth plate 20.
  • the burner body 10 is also positioned in the direction of its axis 11 relative to the top of the hearth plate 20.
  • the fins 13 of the burner body 10 comprise each a flat surface 17 substantially perpendicular to the axis 11. These flat surfaces 17 come to rest on a flat surface 24 belonging above the hearth plate 20.
  • the flat surface 24 has for example the forms a washer and forms the top of a bulge in the plate hearth 20. This bulge is substantially of axis 42. The interior of this bulge forms a bowl in the center of which is hole 21.
  • the bowl and hole 21 form a pot which gives its name to a pot burner.
  • the upper surface 22 forms the bottom of its bowl.
  • Hearth plate 20 retains substantially the same thickness, for example of the order of 2 to 4 millimeters, at the bottom and on the sides of its bowl as well as on its bulge.
  • Control the shape and position only on one side, in this case the upper surface of the hearth plate 20 allows reduce its production cost. It is thus possible to use certain methods of manufacturing such as molding for a hearth plate 20 in vitroceramic. Molding, leading to significant disparities in shape and dimensions in the thickness of the hearth plate 20, would not possible if the support 50 was positioned relative to below the hearth plate 20.
  • the support 50 must be maintained in the position defined above.
  • the device comprises elastic means tending to move aside the support 50 from a lower face 23 of the hearth plate 20.
  • These elastic means comprise for example a flexible seal 90 located between the underside 23 of the hearth plate 20 and a face upper 55 of the support.
  • the lower face 23 and the face upper 55 are substantially parallel and perpendicular to the axis 42.
  • the flexible seal 90 has substantially the shape of a flat washer. The dimensions and elasticity of the flexible joint 90 are defined in order to preserve, once the nut is tight, the different parts in contact, whatever the dimensions actually produced for these different parts in particular the thickness of the hearth plate. It is understood that the odds actually performed must remain within the tolerances defined at design. The invention makes it possible to widen these tolerances.
  • the flexible joint must be able to remain tablet when the following ratings vary within their tolerances: the thickness of the hearth plate 20 (distance between the face lower 23 and upper face 22), the thickness of the hard seal 80, the distance between the shoulder 63 and the flat underside 62 of the nut 60 as well as the distance between the face 54 of the support 50 and the face 55 of the support 50 against which the flexible seal 90 bears.
  • the thickness of the hearth plate 20 distance between the face lower 23 and upper face 22
  • the thickness of the hard seal 80 the distance between the shoulder 63 and the flat underside 62 of the nut 60 as well as the distance between the face 54 of the support 50 and the face 55 of the support 50 against which the flexible seal 90 bears.
  • the device can be designed in such a way that the shoulder 63 and the flat underside 62 of the nut 60 are confused.
  • the diameter of the hole 21 of the hearth plate 20 is greater than the smallest diameter 65 of the nut 60 so that provide a space in which the flexible seal 90 extends for example under the form of a tubular extension 91 of axis 42.
  • This allows, in combination with hard seal 80, to avoid any mechanical contact between, on the one hand the nut 60 and the support 50 which can both be metallic, and secondly the hearth plate 20. Indeed, such mechanical contacts are likely to damage the hearth plate 20.
  • the hearth plate 20 is made of enamelled sheet metal, a metallic contact can damage the enamel.
  • a hearth plate 20 made of glass ceramic can easily break due to clamping between two metal parts. It is understood that this extension 91 can be made by extending the hard seal 80 in place of the flexible seal 90.
  • the extension 91 can cause an offset of the support 50 relative to hole 21 of the hearth plate 20.
  • FIG. 2 shows a burner identical to that shown in FIG. 1. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20. The support 50 is positioned and held in position as for the device represented in FIG. 1 by means of the nut 60.
  • the injector 40 is screwed in the internal thread 61 of the nut 60.
  • a lower face 44 of the injector 40 face substantially perpendicular to the axis 42, abuts against a flat end 56 of the thread 53 of the support 50, when the injector is completely screwed into thread 61.
  • This embodiment simplifies the support 50 which does not have no more tapping 51.
  • FIG. 3 shows a burner identical to that shown in FIG. 1. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20. The support 50 is positioned and held in position as for the device represented in FIG. 1 by means of the nut 60.
  • the injector 40 is screwed in the internal thread 61 of the nut 60.
  • the injector 40 has a shoulder 44 which can be the underside of a collar 45. This shoulder 44 comes in press against an upper face 66 of the nut 60. As for the embodiment shown in Figure 2, this mode simplifies the support 50. In addition, it positions the injector 40 only relative to the nut 60.
  • the embodiment shown in Figure 4 shows a burner identical to that shown in FIG. 3. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20.
  • the support 50 is positioned and held in position as for the device shown in Figures 1, 2 and 3 by means of the nut 60.
  • the mounting of the injector 40 is identical to that described by means of FIG. 3.
  • the smallest diameter 65 of the nut 60 is threaded to come and screw into a thread 56 of the support 50.
  • the internal thread 56 has an axis 42.
  • the faces 62 and 63 of the nut are combined.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)

Abstract

The burner (10) is mounted over a hearth plate (20) and fed with gas through an injector (40) fixed to a support (50). The support is fitted from beneath the heart plate and held in place by a nut (60) fitted above it. The nut has a first face (63) which fits against the top of the hearth plate in the assembled position, and a second face (62) which fits against the support, with hard (80) and supple (90) insulating washers between.

Description

L'invention se rapporte à un dispositif comportant un brûleur à gaz. On entend par brûleur à gaz, des moyens réalisant un mélange d'air et de gaz et réalisant la combustion de ce mélange. En cuisson domestique, les brûleurs à gaz sont généralement montés au-dessus d'une plaque d'âtre réalisée par exemple en tôle émaillée ou en vitrocéramique. Le brûleur à gaz comporte généralement un corps de brûleur et un chapeau de brûleur.The invention relates to a device comprising a burner with gas. By gas burner is meant means producing a mixture of air and of gas and carrying out the combustion of this mixture. In domestic cooking, gas burners are generally mounted above a hearth plate made for example of enamelled sheet or glass ceramic. The burner gas generally has a burner body and a burner cap.

Le gaz arrive dans le brûleur en traversant la plaque d'âtre et est injecté dans le brûleur au moyen d'un injecteur porté par un support. L'axe de l'injecteur est habituellement vertical. Le support est une pièce en général métallique comportant un canal alimentant en gaz l'injecteur. Avantageusement, le support porte des moyens annexes utilisés avec le brûleur comme par exemple une bougie d'allumage réalisant une étincelle pour initier la combustion du mélange d'air et de gaz, ou encore un thermocouple permettant de détecter la présence ou l'absence d'une flamme et de couper l'arrivée de gaz en cas d'absence de flamme. Le support est nécessairement placé sous la plaque d'âtre afin de libérer au maximum l'espace situé au-dessus de la plaque d'âtre pour protéger d'éventuels débordements d'aliments, les éléments que la plaque d'âtre recouvre. L'emplacement du support sous la plaque d'âtre conduit à le positionner par rapport au-dessous de la plaque d'âtre. Par ailleurs, le brûleur dans lequel on effectue le mélange d'air et de gaz, par exemple dans une structure dite venturi d'axe vertical, est quant à lui situé au-dessus de la plaque d'âtre et par conséquent positionné par rapport au-dessus de la plaque d'âtre. Afin d'obtenir une bonne répartition du mélange d'air et de gaz sur toute la circonférence du brûleur, il est nécessaire d'aligner dans une tolérance assez étroite l'axe vertical de l'injecteur et l'axe vertical du venturi. Comme on l'a vu précédemment, le brûleur est positionné par rapport au-dessus de la plaque d'âtre et l'injecteur est positionné, par l'intermédiaire du support, par rapport au-dessous de la plaque d'âtre. Pour respecter la tolérance d'alignement des axes de l'injecteur et du venturi, on est conduit à imposer des tolérances précises sur la réalisation de la plaque d'âtre et en particulier sur son épaisseur, ce qui augmente notablement son coût de réalisation.The gas enters the burner through the hearth plate and is injected into the burner by means of an injector carried by a support. The axis of the injector is usually vertical. The support is a piece in general metallic with a channel supplying gas to the injector. Advantageously, the support carries additional means used with the burner such as a spark plug producing a spark to initiate combustion of the air and gas mixture, or even a thermocouple to detect the presence or absence of a flame and shut off the gas supply if there is no flame. The support is necessarily placed under the hearth plate in order to free as much as possible the space above the hearth plate to protect against possible food overflows, the elements that the hearth plate covers. The location of the support under the hearth plate leads to its positioning by report below the hearth plate. Furthermore, the burner in which air and gas are mixed, for example in a so-called structure venturi with vertical axis, is located above the hearth plate and therefore positioned in relation to the top of the hearth plate. To obtain a good distribution of the air and gas mixture over the entire burner circumference it is necessary to align within a tolerance fairly narrow the vertical axis of the injector and the vertical axis of the venturi. As as we have seen previously, the burner is positioned with respect to above the hearth plate and the injector is positioned, via the support, from below the hearth plate. To respect tolerance alignment of the injector and venturi axes, we are forced to impose precise tolerances on the production of the hearth sheet and in particular on its thickness, which significantly increases its production cost.

L'invention a pour but de proposer un montage particulier du support qui permet d'élargir les tolérances de la plaque d'âtre tout en respectant la tolérance d'alignement des axes de l'injecteur et du brûleur.The object of the invention is to propose a particular arrangement of the support which makes it possible to widen the tolerances of the hearth plate while respecting the alignment tolerance of the injector and burner axes.

Pour atteindre ce but, l'invention a pour objet un dispositif comportant un brûleur à gaz monté au-dessus d'une plaque d'âtre, le gaz arrivant vers le brûleur au travers de la plaque d'âtre et étant injecté dans le brûleur par un injecteur. Le dispositif est caractérisé en ce que l'injecteur est fixé à un support monté par le dessous de la plaque d'âtre et situé sous la plaque d'âtre, en ce que le support est mis en position par rapport au-dessus de la plaque d'âtre et en ce que le support est maintenu dans cette position.To achieve this object, the invention relates to a device comprising a gas burner mounted above a hearth plate, the gas arriving towards the burner through the hearth plate and being injected into the burner by an injector. The device is characterized in that the injector is fixed to a support mounted from below the hearth plate and located under the hearth plate, in that the support is positioned relative to the top of the hearth plate and in that the support is held in this position.

Le support ainsi positionné permet de positionner les moyens annexes tels que la bougie d'allumage et le thermocouple par rapport au-dessus de la plaque d'âtre, ce qui facilite leur positionnement par rapport à la zone des flammes.The support thus positioned makes it possible to position the means appendices such as the spark plug and the thermocouple relative to the top hearth plate, which facilitates their positioning in relation to the flame area.

L'invention est avantageusement mise en oeuvre dans un brûleur dit pot. On appelle brûleur pot, un brûleur dans lequel la plaque d'âtre forme avec le corps du brûleur un canal permettant à de l'air dit primaire d'arriver jusqu'au voisinage de l'injecteur pour y être mélangé avec le gaz sortant de l'injecteur. Habituellement, l'injecteur de ce type de brûleur est situé au fond d'une cuvette directement formée dans la plaque d'âtre, d'où le nom ce « brûleur pot ».The invention is advantageously implemented in a burner said pot. We call pot burner, a burner in which the hearth plate forms with the burner body a channel allowing so-called primary air to arrive to the vicinity of the injector to be mixed with the gas leaving the injector. Usually the injector for this type of burner is located at the bottom a bowl directly formed in the hearth plate, hence the name "Pot burner".

L'invention sera mieux comprise et d'autres avantages apparaítront à la lecture de la description de plusieurs modes de réalisation de l'invention, illustrée par le dessin joint sur lequel :

  • la figure 1 représente un premier mode de réalisation de l'invention dans lequel l'injecteur est fixé sur le support ;
  • la figure 2 représente un second mode de réalisation de l'invention dans lequel l'injecteur est vissé dans un écrou et dans lequel l'injecteur vient en butée sur le support ;
  • la figure 3 représente un troisième mode de réalisation de l'invention dans lequel l'injecteur est vissé dans l'écrou et vient en butée sur celui-ci.
  • la figure 4 représente un quatrième mode de réalisation de l'invention dans lequel l'écrou est vissé dans un taraudage du support.
The invention will be better understood and other advantages will appear on reading the description of several embodiments of the invention, illustrated by the attached drawing in which:
  • FIG. 1 represents a first embodiment of the invention in which the injector is fixed on the support;
  • FIG. 2 represents a second embodiment of the invention in which the injector is screwed into a nut and in which the injector abuts on the support;
  • FIG. 3 represents a third embodiment of the invention in which the injector is screwed into the nut and abuts thereon.
  • FIG. 4 represents a fourth embodiment of the invention in which the nut is screwed into a thread in the support.

Pour une meilleure compréhension, les mêmes repères topologiques désignent les mêmes éléments dans les différentes figures.For a better understanding, the same benchmarks topological designate the same elements in the different figures.

Le brûleur à gaz représenté figure 1 comporte un corps de brûleur 10 posé sur une plaque d'âtre 20 et un chapeau de brûleur 30 posé sur le corps de brûleur 10. le brûleur à gaz est alimenté en air par le dessus de la plaque d'âtre 20 et en gaz par un injecteur 40.The gas burner shown in Figure 1 has a burner body 10 placed on a hearth plate 20 and a burner cap 30 placed on the burner body 10. the gas burner is supplied with air from above the hearth plate 20 and gas by an injector 40.

Le mélange d'air et de gaz se fait en partie à l'intérieur du brûleur dans une structure dite venturi. Ce mélange, dit prémélange, effectué dans le brûleur, comporte environ 40 à 60% de l'air nécessaire à la combustion. Le complément d'air, dit air secondaire, arrive au brûleur au niveau des flammes. Le corps du brûleur 10 est par exemple une pièce de révolution d'axe 11 vertical. Le corps du brûleur comporte une collerette 12 sous laquelle de l'air, dit air primaire, pénètre dans le brûleur.Part of the air and gas mixture inside the burner in a so-called venturi structure. This mixture, known as premix, carried out in the burner contains around 40 to 60% of the air necessary for combustion. The additional air, called secondary air, arrives at the burner at the level of flames. The body of the burner 10 is for example a part of revolution of axis 11 vertical. The burner body has a flange 12 under which air, called primary air, enters the burner.

L'air primaire est acheminé vers le venturi entre des ailettes 13 verticales, par exemple au nombre de quatre, dirigées chacune dans un plan radial par rapport à l'axe 11 du corps de brûleur 10. La structure venturi comporte un trou 14 sensiblement cylindrique ou avantageusement légèrement tronconique situé dans le corps de brûleur 10. Le tronc de cône est d'axe 11 et le sommet du cône est situé au-dessus du brûleur de tel sorte que le trou 14 forme la partie convergeante du venturi. La partie divergeante du venturi est formée entre une surface supérieure 15 du corps de brûleur 10 et une face inférieure 31 du chapeau de brûleur 30. La surface 15 est sensiblement plane ou avantageusement en forme de tronc de cône très évasé dont le sommet se situe au-dessus de la surface supérieure 15. La face inférieure 31 du chapeau du brûleur 30 est sensiblement plane.Primary air is routed to the venturi between fins 13 vertical, for example four in number, each directed in a plane radial with respect to the axis 11 of the burner body 10. The venturi structure has a substantially cylindrical hole 14 or advantageously slightly tapered located in the burner body 10. The truncated cone is of axis 11 and the top of the cone is located above the burner of such so that the hole 14 forms the converging part of the venturi. The part diverging from the venturi is formed between an upper surface 15 of the body burner 10 and a underside 31 of the burner cap 30. The surface 15 is substantially planar or advantageously in the form of a truncated cone very flared, the apex of which is above the upper surface 15. The underside 31 of the burner cap 30 is substantially planar.

L'injecteur 40 est situé sous le trou 14. L'injecteur 40 est une pièce sensiblement de révolution d'axe 42, comportant un trou 41 également de révolution et d'axe 42, par lequel le gaz arrive au brûleur. Le dispositif conforme à l'invention cherche à aligner au mieux les axes 11 et 42. Le gaz s'échappe du trou 41 vers le haut avec une certaine vitesse due à la pression à laquelle le gaz est délivré, pression supérieure à la pression atmosphérique. La vitesse du gaz entraíne l'air primaire dans le trou 14 puis dans la partie divergeante du venturi. Dans cette partie divergeante le mélange d'air et de gaz se dirige sensiblement radialement par rapport à l'axe 11 en s'éloignant de l'axe 11. Le prémélange d'air et de gaz est effectué à la fois dans la partie convergeante et dans la partie divergeante du venturi.The injector 40 is located under the hole 14. The injector 40 is a piece of substantially axis 42 revolution, also having a hole 41 of revolution and axis 42, through which the gas arrives at the burner. The device according to the invention seeks to align axes 11 and 42 as best as possible. The gas escapes from hole 41 upwards with a certain speed due to the pressure at which gas is delivered, pressure higher than pressure atmospheric. The speed of the gas drives the primary air into the hole 14 then in the divergent part of the venturi. In this divergent part the mixture of air and gas is directed substantially radially with respect to axis 11 away from axis 11. The premix of air and gas is performed both in the converging part and in the diverging part venturi.

En aval de la partie divergeante du venturi, le corps de brûleur 10 comporte des créneaux 16 recouvert par une surface 32 du chapeau de brûleur 30. Le prémélange s'échappe entre ces créneaux pour s'enflammer à l'extérieur du corps de brûleur 10. L'air secondaire arrive au niveau des flammes par le dessus de la collerette 12. La face 31 du chapeau de brûleur 30 est située plus bas que la face 32, de manière à former une surface 33 sensiblement cylindrique et d'axe vertical, qui centre le chapeau de brûleur 30 par rapport à l'intérieur des créneaux 16 du corps de brûleur 10, de façon à ce que l'axe vertical de la surface 33 soit sensiblement confondu avec l'axe 11.Downstream of the divergent part of the venturi, the burner body 10 has slots 16 covered by a surface 32 of the hat burner 30. The premix escapes between these slots to ignite outside the burner body 10. The secondary air arrives at the flames from above the flange 12. The face 31 of the burner cap 30 is located lower than the face 32, so as to form a surface 33 substantially cylindrical and vertical in axis, which centers the burner cap 30 relative to the interior of the slots 16 of the burner body 10, so that the vertical axis of the surface 33 is substantially coincident with axis 11.

L'injecteur 40 comporte dans sa partie inférieure des moyens pour le fixer sur un support 50. Ces moyens comportent par exemple un filetage 43 d'axe 42 venant se visser dans un taraudage 51 du support 50. Pour simplifier la description, on considérera que l'axe 42 est également un axe du support 50. Les moyens de fixation de l'injecteur 40 peuvent également comporter, dans la partie supérieure de l'injecteur 40, deux méplats ou une forme hexagonale dont les surfaces sont parallèles à l'axe 42, afin de serrer l'injecteur 40 sur le support 50 à l'aide d'un outil adapté tel qu'une clé plate par exemple. Les méplats ou la forme hexagonale ne sont pas représentés sur la figure 1. La possibilité de séparer l'injecteur 40 du support 50 est nécessaire lorsque le brûleur à gaz est prévu pour fonctionner avec différents gaz de combustion comme par exemple le gaz butane ou le gaz naturel. Le trou 41 de l'injecteur 40 est adapté au gaz retenu. Si au contraire, le brûleur à gaz n'est conçu que pour n'utiliser qu'un seul type de gaz, l'injecteur 40 et le support 50 peuvent ne faire qu'une seule pièce mécanique. Dans ce cas, on peut aussi envisager que l'injecteur 40 ne fasse qu'une pièce, non pas avec le support 50 mais avec un écrou 60 servant à immobiliser le support. Cet écrou 60 sera décrit plus en détail ultérieurement.The injector 40 has in its lower part means to fix it on a support 50. These means comprise for example a thread 43 of axis 42 coming to be screwed in a thread 51 of the support 50. To simplify the description, we will consider that the axis 42 is also a axis of the support 50. The means for fixing the injector 40 can also include, in the upper part of the injector 40, two flats or a hexagonal shape whose surfaces are parallel to the axis 42, in order to tighten the injector 40 on the support 50 using a suitable tool such than a wrench for example. Flats or hexagonal shape are not not shown in Figure 1. The possibility of separating the injector 40 from the support 50 is necessary when the gas burner is designed to operate with different combustion gases such as gas butane or natural gas. The hole 41 of the injector 40 is adapted to the gas restrained. If, on the contrary, the gas burner is only designed to use one only type of gas, the injector 40 and the support 50 may be one single mechanical part. In this case, we can also consider that the injector 40 is one piece, not with the support 50 but with a nut 60 used to immobilize the support. This nut 60 will be described in more detail later.

A la partie inférieure de l'injecteur 40, le trou 41 débouche dans une cavité 52 du support 50. La cavité 52 peut être l'extrémité d'un conduit coudé non représenté sur la figure 1 et alimentant l'injecteur 40 en gaz. Le conduit coudé, ayant le plus souvent des dimensions importantes par rapport aux dimensions du brûleur lui-même, rend le support relativement massif. Avantageusement, le support porte des dispositifs annexes au brûleur à gaz, comme par exemple, une bougie d'allumage 70 ou un thermocouple, non représenté. La bougie d'allumage 70 est représentée figure 1 sous forme d'une pièce sensiblement cylindrique d'axe 71. L'axe 71 est sensiblement parallèle à l'axe 42. La bougie 70 est positionnée par rapport au support 50 par exemple au moyen d'une partie cylindrique 72 pénétrant dans un trou du support 50 et d'un épaulement 73 appartenant à la bougie 70. L'épaulement 73 vient en appui contre une partie 56 de la surface supérieure du support 50. L'épaulement 72 et la partie 56 sont sensiblement perpendiculaires à l'axe 71. La bougie 70 est maintenue en position par rapport au support 50, par exemple au moyen d'un écrou 74 venant appliquer l'épaulement 73 contre la partie 56. Au-dessus du support 50, la bougie traverse la plaque d'âtre 20 et le sommet de la bougie 70 se situe à proximité des créneaux 16, à l'extérieur du corps de brûleur 10 afin de créer, le moment venu, une étincelle pour enflammer le mélange d'air et de gaz s'échappant entre les créneaux 16. Le montage de la bougie 70 par rapport au support 50 permet de positionner de façon précise l'étincelle par rapport aux créneaux 16.At the lower part of the injector 40, the hole 41 opens into a cavity 52 of the support 50. The cavity 52 can be the end of a conduit bent not shown in Figure 1 and supplying the injector 40 with gas. The bent duct, most often having large dimensions by compared to the dimensions of the burner itself, makes the support relatively massive. Advantageously, the support carries devices annexed to the gas burner, such as a spark plug 70 or a thermocouple, not shown. Spark plug 70 is shown Figure 1 in the form of a substantially cylindrical part with axis 71. The axis 71 is substantially parallel to the axis 42. The spark plug 70 is positioned by relative to the support 50 for example by means of a cylindrical part 72 entering a hole in the support 50 and a shoulder 73 belonging to the spark plug 70. The shoulder 73 bears against a part 56 of the upper surface of the support 50. The shoulder 72 and the part 56 are substantially perpendicular to the axis 71. The candle 70 is held in position relative to the support 50, for example by means of a nut 74 applying the shoulder 73 against the part 56. Above the support 50, the candle crosses the hearth plate 20 and the top of the candle 70 is located near the slots 16, outside the burner body 10 so when the time comes, to create a spark to ignite the air mixture and of gas escaping between the slots 16. The mounting of the spark plug 70 by relative to the support 50 makes it possible to precisely position the spark by compared to slots 16.

L'écrou 60 a sensiblement la forme d'un arbre épaulé qui une fois assemblé est d'axe 42. Il est percé et taraudé de part en part par un taraudage 61 d'axe 42. Le plus gros diamètre 64 de l'écrou 60 se situe dans la partie supérieure. Dans le taraudage 61, un filetage 53 appartenant au support 50 vient se visser. Une face inférieure plane 62 de l'écrou 60 vient en butée, lorsque le filetage 53 est vissé à fond dans le taraudage 61, contre une face supérieure 54 du support 50. Les faces 62 et 54 sont par exemple sensiblement perpendiculaires à l'axe 42 de telle sorte qu'elles constituent, lorsqu'elles sont en appui l'une contre l'autre, un positionnement précis du support 50 par rapport à l'écrou 60 dans la direction de l'axe 42. Le plus petit diamètre 65 de l'écrou 60 traverse un trou 21 de la plaque d'âtre 20. Le trou 21 est sensiblement d'axe 42 lorsque le support est assemblé. Le diamètre du trou 21 est voisin du plus petit diamètre 65 de l'écrou 60 de sorte que seul le plus petit diamètre 65 puisse traverser le trou 21. Un épaulement 63 de l'écrou 60 vient en appui contre une face supérieure 22 de la plaque d'âtre 20, de telle sorte à positionner de façon précise l'écrou 50 par rapport à la face supérieure 22 de la plaque d'âtre 20 dans la direction de l'axe 42.The nut 60 has substantially the shape of a shouldered shaft which once assembled is of axis 42. It is drilled and tapped right through by a internal thread 61 of axis 42. The largest diameter 64 of nut 60 is located in the upper portion. In the internal thread 61, a thread 53 belonging to the support 50 is screwed. A flat underside 62 of the nut 60 comes in abutment, when the thread 53 is fully screwed into the internal thread 61, against an upper face 54 of the support 50. The faces 62 and 54 are by example substantially perpendicular to the axis 42 so that they constitute, when they are pressed against each other, a positioning precision of the support 50 relative to the nut 60 in the direction of the axis 42. The smallest diameter 65 of the nut 60 passes through a hole 21 in the plate hearth 20. The hole 21 is substantially of axis 42 when the support is assembled. The diameter of the hole 21 is close to the smallest diameter 65 of the nut 60 so that only the smallest diameter 65 can pass through the hole 21. A shoulder 63 of the nut 60 comes to bear against a face upper 22 of the hearth plate 20, so as to position so specifies the nut 50 relative to the upper face 22 of the hearth plate 20 in the direction of axis 42.

Les dimensions du trou 21 sont plus petites que celles du supports 50. En conséquence, le support 50 est monté par le dessous de la plaque d'âtre 20. Le support 50 est néanmoins positionné par rapport au dessus de la plaque d'âtre 20 au moyen de l'écrou 60.The dimensions of hole 21 are smaller than those of supports 50. Consequently, the support 50 is mounted from below the hearth plate 20. The support 50 is nevertheless positioned relative to the above the hearth plate 20 by means of the nut 60.

Avantageusement on peut intercaler entre l'épaulement 63 et la face supérieure 22 un joint dur 80, c'est-à-dire peu déformable, afin d'améliorer l'étanchéité entre la face supérieure 22 et la face inférieure 23 de la plaque d'âtre 20. Le joint dur 80 a par exemple la forme d'une rondelle dont le diamètre intérieur est voisin du plus petit diamètre 65 de l'écrou 60. La dureté du joint 80 est choisie de façon à conserver un positionnement précis de l'écrou 60 par rapport à la face supérieure 22 lorsque l'écrou 60 est serré sur le support 50. Ainsi, le support 50 est positionné de façon précise par rapport à la face supérieure 22 de la plaque d'âtre 20. Ce positionnement permet de connaítre et donc de maítriser la position du trou 41 de l'injecteur 40 par rapport au-dessus de la plaque d'âtre 20.Advantageously, it is possible to interpose between the shoulder 63 and the upper face 22 a hard joint 80, that is to say slightly deformable, so improve the seal between the upper face 22 and the lower face 23 of the hearth plate 20. The hard seal 80 has for example the shape of a washer whose internal diameter is close to the smallest diameter 65 of the nut 60. The hardness of the seal 80 is chosen so as to maintain a positioning precise of the nut 60 relative to the upper face 22 when the nut 60 is clamped on the support 50. Thus, the support 50 is positioned so precise with respect to the upper face 22 of the hearth plate 20. This positioning allows you to know and therefore control the position of the hole 41 of the injector 40 relative to the top of the hearth plate 20.

Le corps de brûleur 10 est lui aussi positionné dans la direction de son axe 11 par rapport au-dessus de la plaque d'âtre 20. Avantageusement, les ailettes 13 du corps de brûleur 10 comportent chacune une surface plane 17 sensiblement perpendiculaire à l'axe 11. Ces surfaces planes 17 viennent se poser sur une surface plane 24 appartenant au-dessus de la plaque d'âtre 20. La surface plane 24 a par exemple la forme d'une rondelle et constitue le sommet d'un renflement de la plaque d'âtre 20. Ce renflement est sensiblement d'axe 42. L'intérieur de ce renflement forme une cuvette au centre de laquelle se trouve le trou 21. La cuvette et le trou 21 forment un pot qui donne son nom à un brûleur pot. La surface supérieure 22 forme le fond de sa cuvette. La plaque d'âtre 20 conserve sensiblement la même épaisseur, par exemple de l'ordre de 2 à 4 millimètres, au fond et sur les côtés de sa cuvette ainsi que sur son renflement.The burner body 10 is also positioned in the direction of its axis 11 relative to the top of the hearth plate 20. Advantageously, the fins 13 of the burner body 10 comprise each a flat surface 17 substantially perpendicular to the axis 11. These flat surfaces 17 come to rest on a flat surface 24 belonging above the hearth plate 20. The flat surface 24 has for example the forms a washer and forms the top of a bulge in the plate hearth 20. This bulge is substantially of axis 42. The interior of this bulge forms a bowl in the center of which is hole 21. The bowl and hole 21 form a pot which gives its name to a pot burner. The upper surface 22 forms the bottom of its bowl. Hearth plate 20 retains substantially the same thickness, for example of the order of 2 to 4 millimeters, at the bottom and on the sides of its bowl as well as on its bulge.

Le support 50 et le corps de brûleur 10 étant tous deux positionnés par rapport au-dessus de la plaque d'âtre 20, il est alors aisé de maítriser le désaxage maximum entre l'axe 11 du corps de brûleur et l'axe 42 de l'injecteur 40. Ne maítriser la forme et la position que d'une seule face, en l'occurrence la surface supérieure, de la plaque d'âtre 20 permet de réduire son coût de réalisation. On peut ainsi utiliser certains procédés de fabrication comme par exemple le moulage pour une plaque d'âtre 20 en vitrocéramique. Le moulage, entraínant des disparités importantes de forme et de dimensions dans l'épaisseur de la plaque d'âtre 20, ne serait pas envisageable si le support 50 était positionné par rapport au-dessous de la plaque d'âtre 20.The support 50 and the burner body 10 both being positioned relative to the hearth plate 20, it is then easy to control the maximum offset between the axis 11 of the burner body and the axis 42 of the injector 40. Control the shape and position only on one side, in this case the upper surface of the hearth plate 20 allows reduce its production cost. It is thus possible to use certain methods of manufacturing such as molding for a hearth plate 20 in vitroceramic. Molding, leading to significant disparities in shape and dimensions in the thickness of the hearth plate 20, would not possible if the support 50 was positioned relative to below the hearth plate 20.

Par ailleurs, et indépendamment des moyens de mise en position, le support 50 doit être maintenu dans la position définie précédemment. Avantageusement, le dispositif comporte des moyens élastiques tendant à écarter le support 50 d'une face inférieure 23 de la plaque d'âtre 20.Furthermore, and independently of the positioning means, the support 50 must be maintained in the position defined above. Advantageously, the device comprises elastic means tending to move aside the support 50 from a lower face 23 of the hearth plate 20.

Ces moyens élastiques comportent par exemple un joint souple 90 situé entre la face inférieure 23 de la plaque d'âtre 20 et une face supérieure 55 du support. Avantageusement, la face inférieure 23 et la face supérieure 55 sont sensiblement parallèles et perpendiculaires à l'axe 42. Le joint souple 90 a sensiblement la forme d'une rondelle plate. Les dimensions et l'élasticité du joint souple 90 sont définies afin de conserver, une fois l'écrou serré, les différentes pièces en contact, quelles que soient les cotes effectivement réalisées pour ces différentes pièces notamment l'épaisseur de la plaque d'âtre. Il est bien entendu que les cotes effectivement réalisées doivent rester comprises à l'intérieur des tolérances définies à la conception. L'invention permet d'élargir ces tolérances. Selon le mode de réalisation représenté figure 1, le joint souple doit pouvoir rester comprimé lorsque les cotes suivantes varient à l'intérieur de leurs tolérances: l'épaisseur de la plaque d'âtre 20 (distance entre la face inférieure 23 et la face supérieure 22), l'épaisseur du joint dur 80, la distance comprise entre l'épaulement 63 et la face inférieure plane 62 de l'écrou 60 ainsi que la distance comprise entre la face 54 du support 50 et la face 55 du support 50 contre laquelle le joint souple 90 s'appuie. On peut bien entendu concevoir le dispositif de telle sorte que les faces 54 et 55 soient confondues. De même, on peut concevoir le dispositif de telle sorte que l'épaulement 63 et la face inférieure plane 62 de l'écrou 60 soient confondus. These elastic means comprise for example a flexible seal 90 located between the underside 23 of the hearth plate 20 and a face upper 55 of the support. Advantageously, the lower face 23 and the face upper 55 are substantially parallel and perpendicular to the axis 42. The flexible seal 90 has substantially the shape of a flat washer. The dimensions and elasticity of the flexible joint 90 are defined in order to preserve, once the nut is tight, the different parts in contact, whatever the dimensions actually produced for these different parts in particular the thickness of the hearth plate. It is understood that the odds actually performed must remain within the tolerances defined at design. The invention makes it possible to widen these tolerances. According to the embodiment shown in Figure 1, the flexible joint must be able to remain tablet when the following ratings vary within their tolerances: the thickness of the hearth plate 20 (distance between the face lower 23 and upper face 22), the thickness of the hard seal 80, the distance between the shoulder 63 and the flat underside 62 of the nut 60 as well as the distance between the face 54 of the support 50 and the face 55 of the support 50 against which the flexible seal 90 bears. We can of course design the device so that the faces 54 and 55 are confused. Similarly, the device can be designed in such a way that the shoulder 63 and the flat underside 62 of the nut 60 are confused.

Avantageusement, le diamètre du trou 21 de la plaque d'âtre 20 est supérieur au plus petit diamètre 65 de l'écrou 60 de telle sorte à ménager un espace dans lequel le joint souple 90 s'étend par exemple sous la forme d'un prolongement tubulaire 91 d'axe 42. Cela permet, en combinaison avec le joint dur 80, d'éviter tout contact mécanique entre, d'une part l'écrou 60 et le support 50 qui peuvent tous deux être métallique, et d'autre part la plaque d'âtre 20. En effet, de tels contacts mécaniques sont susceptibles d'endommager la plaque d'âtre 20. Par exemple lorsque la plaque d'âtre 20 est en tôle émaillée, un contact métallique peut endommager l'émail. De même façon, une plaque d'âtre 20 réalisée en vitrocéramique peut facilement se rompre sous l'effet d'un serrage entre deux pièces métalliques. Il est bien entendu que ce prolongement 91 peut être réalisé en prolongeant le joint dur 80 à la place du joint souple 90.Advantageously, the diameter of the hole 21 of the hearth plate 20 is greater than the smallest diameter 65 of the nut 60 so that provide a space in which the flexible seal 90 extends for example under the form of a tubular extension 91 of axis 42. This allows, in combination with hard seal 80, to avoid any mechanical contact between, on the one hand the nut 60 and the support 50 which can both be metallic, and secondly the hearth plate 20. Indeed, such mechanical contacts are likely to damage the hearth plate 20. For example when the hearth plate 20 is made of enamelled sheet metal, a metallic contact can damage the enamel. Similarly, a hearth plate 20 made of glass ceramic can easily break due to clamping between two metal parts. It is understood that this extension 91 can be made by extending the hard seal 80 in place of the flexible seal 90.

Le prolongement 91 peut entraíner un décentrage du support 50 par rapport au trou 21 de la plaque d'âtre 20. Pour pallier ce défaut, on centre avantageusement le corps de brûleur 10 sur l'écrou 60, ce qui permet d'améliorer la concordance des axes 11 du corps de brûleur 10 et 42 de l'injecteur 40. Ce centrage est réalisé en positionnant une surface verticale 18 de chaque ailette 13 autour du grand diamètre 64 de l'écrou 60.The extension 91 can cause an offset of the support 50 relative to hole 21 of the hearth plate 20. To remedy this defect, we advantageously centers the burner body 10 on the nut 60, which allows improve the alignment of the axes 11 of the burner body 10 and 42 by injector 40. This centering is achieved by positioning a vertical surface 18 of each fin 13 around the large diameter 64 of the nut 60.

Le mode de réalisation représenté figure 2 représente un brûleur identique à celui représenté figure 1. Il comporte le corps de brûleur 10 et le chapeau de brûleur 30. Le brûleur est positionné au-dessus de la plaque d'âtre 20. Le support 50 est positionné et maintenu en position comme pour le dispositif représenté figure 1 au moyen de l'écrou 60.The embodiment shown in Figure 2 shows a burner identical to that shown in FIG. 1. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20. The support 50 is positioned and held in position as for the device represented in FIG. 1 by means of the nut 60.

A la figure 2, à la différence de la figure 1, l'injecteur 40 est vissé dans le taraudage 61 de l'écrou 60. Une face inférieure 44 de l'injecteur 40, face sensiblement perpendiculaire à l'axe 42, vient en appui contre une extrémité plane 56 du filetage 53 du support 50, lorsque l'injecteur est complètement vissé dans le taraudage 61.In FIG. 2, unlike FIG. 1, the injector 40 is screwed in the internal thread 61 of the nut 60. A lower face 44 of the injector 40, face substantially perpendicular to the axis 42, abuts against a flat end 56 of the thread 53 of the support 50, when the injector is completely screwed into thread 61.

Ce mode de réalisation simplifie le support 50 qui ne présente plus de taraudage 51.This embodiment simplifies the support 50 which does not have no more tapping 51.

Le mode de réalisation représenté figure 3 représente un brûleur identique à celui représenté figure 1. Il comporte le corps de brûleur 10 et le chapeau de brûleur 30. Le brûleur est positionné au-dessus de la plaque d'âtre 20. Le support 50 est positionné et maintenu en position comme pour le dispositif représenté figure 1 au moyen de l'écrou 60.The embodiment shown in Figure 3 shows a burner identical to that shown in FIG. 1. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20. The support 50 is positioned and held in position as for the device represented in FIG. 1 by means of the nut 60.

A la figure 3, à la différence de la figure 1, l'injecteur 40 est vissé dans le taraudage 61 de l'écrou 60. l'injecteur 40 comporte un épaulement 44 qui peut être la face inférieure d'un collet 45. Cet épaulement 44 vient en appui contre une face supérieure 66 de l'écrou 60. Comme pour le mode de réalisation représenté figure 2, ce mode simplifie le support 50. De plus, il ne positionne l'injecteur 40 que par rapport à l'écrou 60.In FIG. 3, unlike FIG. 1, the injector 40 is screwed in the internal thread 61 of the nut 60. the injector 40 has a shoulder 44 which can be the underside of a collar 45. This shoulder 44 comes in press against an upper face 66 of the nut 60. As for the embodiment shown in Figure 2, this mode simplifies the support 50. In addition, it positions the injector 40 only relative to the nut 60.

Le mode de réalisation représenté figure 4 représente un brûleur identique à celui représenté figure 3. Il comporte le corps de brûleur 10 et le chapeau de brûleur 30. Le brûleur est positionné au-dessus de la plaque d'âtre 20. Le support 50 est positionné et maintenu en position comme pour le dispositif représenté figures 1, 2 et 3 au moyen de l'écrou 60. Le montage de l'injecteur 40 est identique à celui décrit au moyen de la figure 3. Par contre, à la différence de la figure 3, le plus petit diamètre 65 de l'écrou 60 est fileté pour venir se visser dans un taraudage 56 du support 50. Le taraudage 56 est d'axe 42. Les faces 62 et 63 de l'écrou sont confondues.The embodiment shown in Figure 4 shows a burner identical to that shown in FIG. 3. It comprises the burner body 10 and the burner cap 30. The burner is positioned above the plate hearth 20. The support 50 is positioned and held in position as for the device shown in Figures 1, 2 and 3 by means of the nut 60. The mounting of the injector 40 is identical to that described by means of FIG. 3. By against, unlike FIG. 3, the smallest diameter 65 of the nut 60 is threaded to come and screw into a thread 56 of the support 50. The internal thread 56 has an axis 42. The faces 62 and 63 of the nut are combined.

Claims (10)

Dispositif comportant un brûleur à gaz (10, 30) monté au-dessus d'une plaque d'âtre (20), le gaz arrivant vers le brûleur (10, 30) au travers de la plaque d'âtre (20), et étant injecté dans le brûleur (10, 30) par un injecteur (40), caractérisé en ce que l'injecteur (40) est fixé à un support (50) monté par le dessous de la plaque d'âtre (20) et situé sous la plaque d'âtre (20), en ce que le support (50) est mis en position par rapport au dessus de la plaque d'âtre (20) et en ce que le support (50) est maintenu dans cette position.Device comprising a gas burner (10, 30) mounted above of a hearth plate (20), the gas arriving towards the burner (10, 30) at the through the hearth plate (20), and being injected into the burner (10, 30) by an injector (40), characterized in that the injector (40) is fixed to a support (50) mounted from below the hearth plate (20) and located under the plate hearth (20), in that the support (50) is placed in position relative to the above the hearth plate (20) and in that the support (50) is maintained in this position. Dispositif selon la revendication 1, caractérisé en ce que le positionnement du support (50) est assuré au moyen d'un écrou (60) vissé sur le support (50), l'écrou (60) ayant une première face (63) qui, en position assemblée, vient en appui contre une face supérieure (22) de la plaque d'âtre (20), l'écrou (60) ayant une seconde face (62) qui en position assemblée vient en appui contre le support (50).Device according to claim 1, characterized in that the positioning of the support (50) is ensured by means of a screwed nut (60) on the support (50), the nut (60) having a first face (63) which, in position assembled, bears against an upper face (22) of the plate hearth (20), the nut (60) having a second face (62) which in position assembly comes to bear against the support (50). Dispositif selon l'une des revendications précédentes, caractérisé en ce que le support (50) est maintenu en position par des moyens élastiques (90) tendant à l'écarter d'une face inférieure (23) de la plaque d'âtre (20).Device according to one of the preceding claims, characterized in that the support (50) is held in position by elastic means (90) tending to separate it from a lower face (23) of the hearth plate (20). Dispositif selon la revendication 3, caractérisé en ce que les moyens élastiques comportent un joint souple (90).Device according to claim 3, characterized in that the elastic means comprise a flexible seal (90). Dispositif selon l'une quelconque des revendications 2 à 4, caractérisé en ce que le support (50) et l'écrou (60) sont isolés mécaniquement de la plaque d'âtre (20).Device according to any one of Claims 2 to 4, characterized in that the support (50) and the nut (60) are insulated mechanically from the hearth plate (20). Dispositif selon les revendications 4 et 5, caractérisé en ce que l'isolation mécanique du support (50) et de l'écrou (60) par rapport à la plaque d'âtre (20) est réalisé au moyen d'un joint dur (80) situé entre l'écrou (60) et la plaque d'âtre (20) ainsi qu'au moyen du joint souple (90). Device according to claims 4 and 5, characterized in that that the mechanical insulation of the support (50) and the nut (60) with respect to the hearth plate (20) is produced by means of a hard seal (80) located between the nut (60) and the hearth plate (20) as well as by means of the flexible seal (90). Dispositif selon la revendication 6, caractérisé en ce que le gaz arrive vers le brûleur (10, 30) à travers un orifice (21) de la plaque d'âtre (20) et en ce que le joint souple (90) comporte un prolongement (91) axial situé entre l'orifice (21) et le support (50).Device according to claim 6, characterized in that the gas reaches the burner (10, 30) through an orifice (21) in the hearth plate (20) and in that the flexible seal (90) has an axial extension (91) located between the orifice (21) and the support (50). Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'injecteur (40) est directement assemblé sur le support (50).Device according to one of the preceding claims, characterized in that the injector (40) is directly assembled on the support (50). Dispositif selon l'une quelconque des revendications 2 à 7, caractérisé en ce que l'injecteur (40) est directement assemblé à l'écrou (60).Device according to any one of Claims 2 to 7, characterized in that the injector (40) is directly assembled to the nut (60). Dispositif selon l'une des revendications précédentes, caractérisé en ce que le gaz arrive vers le brûleur en traversant la plaque d'âtre (20) sensiblement au centre d'une cuvette formée dans la plaque d'âtre (20).Device according to one of the preceding claims, characterized in that the gas reaches the burner by passing through the plate hearth (20) substantially in the center of a bowl formed in the plate hearth (20).
EP99402550A 1998-10-16 1999-10-15 Assembly of a device comprising a gas burner Expired - Lifetime EP0994301B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9813020A FR2784740B1 (en) 1998-10-16 1998-10-16 MOUNTING OF A DEVICE COMPRISING A GAS BURNER
FR9813020 1998-10-16

Publications (2)

Publication Number Publication Date
EP0994301A1 true EP0994301A1 (en) 2000-04-19
EP0994301B1 EP0994301B1 (en) 2004-01-02

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ID=9531675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99402550A Expired - Lifetime EP0994301B1 (en) 1998-10-16 1999-10-15 Assembly of a device comprising a gas burner

Country Status (5)

Country Link
EP (1) EP0994301B1 (en)
AT (1) ATE257235T1 (en)
DE (1) DE69913912T2 (en)
ES (1) ES2214827T3 (en)
FR (1) FR2784740B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6537065B1 (en) * 2002-04-04 2003-03-25 Viking Range Corporation Sealed gas burner
FR2831242A1 (en) * 2001-10-24 2003-04-25 Sourdillon Sa Atmospheric-type gas burner for cooking appliance, has primary air conveying portion having apertures and communication passage formed with cross-sections that allow primary air to flow from exterior of burner head towards gas injector
EP2693125A1 (en) * 2012-07-30 2014-02-05 BSH Bosch und Siemens Hausgeräte GmbH Hob with seal element
CN103742909A (en) * 2014-01-25 2014-04-23 浙江帅丰电器有限公司 Upper air incoming burner with two ejectors
CN104315517A (en) * 2014-10-17 2015-01-28 浙江帅丰电器有限公司 Integrated combustor lower seat
WO2017211973A1 (en) * 2016-06-09 2017-12-14 Arcelik Anonim Sirketi A cooking device comprising an injector
US10774956B2 (en) * 2007-08-22 2020-09-15 Burner Systems International, Inc. Orifice holder construction
CN113932221A (en) * 2020-07-13 2022-01-14 宁波方太厨具有限公司 Upper air inlet burner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183016A (en) * 2011-02-18 2011-09-14 孙云山 Combustor assembly of multi-nozzle gas furnace for complete top air intake

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Publication number Priority date Publication date Assignee Title
GB1579322A (en) * 1977-04-29 1980-11-19 Glynwed Domestic & Heating App Gas burners
GB2256268A (en) * 1991-05-31 1992-12-02 Zanussi Elettrodomestici Cooker burner mounting
EP0751352A1 (en) * 1995-06-30 1997-01-02 Compagnie Europeenne Pour L'equipement Menager "Cepem" Cooking burner centered on an injector
DE29805620U1 (en) * 1998-03-27 1998-05-14 Schott Glas, 55122 Mainz Hob with a gas burner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1579322A (en) * 1977-04-29 1980-11-19 Glynwed Domestic & Heating App Gas burners
GB2256268A (en) * 1991-05-31 1992-12-02 Zanussi Elettrodomestici Cooker burner mounting
EP0751352A1 (en) * 1995-06-30 1997-01-02 Compagnie Europeenne Pour L'equipement Menager "Cepem" Cooking burner centered on an injector
DE29805620U1 (en) * 1998-03-27 1998-05-14 Schott Glas, 55122 Mainz Hob with a gas burner

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831242A1 (en) * 2001-10-24 2003-04-25 Sourdillon Sa Atmospheric-type gas burner for cooking appliance, has primary air conveying portion having apertures and communication passage formed with cross-sections that allow primary air to flow from exterior of burner head towards gas injector
EP1306616A1 (en) * 2001-10-24 2003-05-02 Sourdillon Gas burner of the atmospheric type
US6889685B2 (en) 2001-10-24 2005-05-10 Burner Systems International (Bsi) Gas burner of atmospheric type
US6537065B1 (en) * 2002-04-04 2003-03-25 Viking Range Corporation Sealed gas burner
US10774956B2 (en) * 2007-08-22 2020-09-15 Burner Systems International, Inc. Orifice holder construction
EP2693125A1 (en) * 2012-07-30 2014-02-05 BSH Bosch und Siemens Hausgeräte GmbH Hob with seal element
CN103742909A (en) * 2014-01-25 2014-04-23 浙江帅丰电器有限公司 Upper air incoming burner with two ejectors
CN103742909B (en) * 2014-01-25 2017-02-08 浙江帅丰电器有限公司 Upper air incoming burner with two ejectors
CN104315517A (en) * 2014-10-17 2015-01-28 浙江帅丰电器有限公司 Integrated combustor lower seat
CN104315517B (en) * 2014-10-17 2017-09-19 浙江帅丰电器有限公司 Seat under integral combustor
WO2017211973A1 (en) * 2016-06-09 2017-12-14 Arcelik Anonim Sirketi A cooking device comprising an injector
CN113932221A (en) * 2020-07-13 2022-01-14 宁波方太厨具有限公司 Upper air inlet burner
CN113932221B (en) * 2020-07-13 2022-10-14 宁波方太厨具有限公司 Upper air inlet burner

Also Published As

Publication number Publication date
EP0994301B1 (en) 2004-01-02
ES2214827T3 (en) 2004-09-16
FR2784740A1 (en) 2000-04-21
FR2784740B1 (en) 2001-01-05
ATE257235T1 (en) 2004-01-15
DE69913912T2 (en) 2004-11-18
DE69913912D1 (en) 2004-02-05

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