EP0452379A1 - Linear gas-burner with adjustable width. - Google Patents

Linear gas-burner with adjustable width.

Info

Publication number
EP0452379A1
EP0452379A1 EP90901598A EP90901598A EP0452379A1 EP 0452379 A1 EP0452379 A1 EP 0452379A1 EP 90901598 A EP90901598 A EP 90901598A EP 90901598 A EP90901598 A EP 90901598A EP 0452379 A1 EP0452379 A1 EP 0452379A1
Authority
EP
European Patent Office
Prior art keywords
gas
tube
air
distributor tube
injectors
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
EP90901598A
Other languages
German (de)
French (fr)
Other versions
EP0452379B1 (en
Inventor
Michel Coulon
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.)
COMESSA SA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0452379A1 publication Critical patent/EP0452379A1/en
Application granted granted Critical
Publication of EP0452379B1 publication Critical patent/EP0452379B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/22—Arrangements of gas flames
    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • F26B13/186—Arrangements for heating, cooling, condensate removal using combustion

Definitions

  • the present invention relates to a linear gas and blown air burner, comprising an air distributor tube connected to a pressurized air supply, a gas distributor tube mounted inside the air distributor tube and provided with '' a gas inlet connected to a pressurized gas supply, and at least one longitudinal row of gas injectors, these injectors extending substantially radially from the gas distributor tube through air injectors mounted on air outlet ports in the wall of the air distributor tube, each gas injector being mounted on a gas outlet port in the wall of the gas distributor tube.
  • Such a linear gas burner described in European patent n ° 0190091, has great advantages from the point of view of safety, since the mixing of the gas with the blown air takes place only at the entrance to the combustion zone. , and from the point of view of operating convenience since it has a very high ratio between its maximum power and its minimum power. This is why it is very widely used, especially in the food industry and in the textile industry. This is the case in particular in textile finishing machines, especially the drying and heat setting reams, where it allows both an optimal distribution of heat over the entire surface of the product to be treated and a power modulation which will up to 1:50 and which allows, in applications as different as drying fabrics or heat-fixing dyes, to work at very precise temperatures whatever the heat requirement.
  • the present invention therefore aims to provide a linear gas burner of the type indicated in the preamble, equipped with a device for precisely adjusting the active width of the flame, keeping it engaged or not, in a way individual, at least the injectors located near one end of the row.
  • the burner according to the invention is characterized in that the gas distributor tube is closed internally by at least one sliding shutter member arranged to block the gas supply to a section of this tube comprising one or more several gas injectors, said shutter member being coupled to a control bar disposed longitudinally in this tube and connected to control means located outside this tube, and in that all the air injectors of said row continue to 'be supplied with air when the gas supply to one or more gas injectors is blocked by said shutter member.
  • control bar is rotatable about its axis and comprises at least one threaded section which is engaged in a corresponding threaded bore of the shutter member, and the shutter member is provided with means preventing it from rotating in the gas distributor tube.
  • the control bar can be rotatably mounted in two elements closing the ends of the gas distributor tube, the bar passing through at least one of the elements to be connected to the control means.
  • the gas distributor tube has a circular cross section, as does the closure member, and to prevent the closure member from rotating in the tube, the control rod and the threaded bore of this organ are arranged following: an axis which is off-center by
  • the gas distributor tube is equipped with two sliding shutter members and with a " lateral gas inlet situated between these two members.
  • the control bar comprises two threaded elements in - if -
  • control bar can be connected to the control means by means of a removable coupling.
  • FIG. 1 is a diagrammatic side elevation view, partially cut away, of an embodiment of a gas burner according to the invention
  • FIG. 2 is a schematic cross-sectional view of this burner, along the line II - II of FIG. 1,
  • FIG. 3 is a view in longitudinal section, on line III-III of the figure, of the gas distributor tube of this burner and of the adjustment mechanism which it contains,
  • FIG. 3 is a cross-sectional view along line IV - IV of FIG. 3, and
  • Figure 5 is a view similar to the figure and shows another embodiment.
  • the linear burner shown comprises an external air distributor tube 1, a gas distributor tube 2 mounted inside the tube 1 in an adjustable position thanks to a pair of threaded rods 3 screwed into the wall of the tube 2 and provided with locking nuts 4, and a row of gas injectors 5 fixed to the tube 2 perpendicular thereto and extending outward, each through an air injector 6 formed by a tubular opening fixed in an orifice 7 of the tube 1.
  • Each air injector contains a swirl ring S, favoring the mixing of the gas and the combustion air at the outlet of the gas injector 5.
  • This type of injector is well known and it is R90 / 00004
  • each gas injector 5 is provided with a threaded base 9 which is screwed into a threaded bore 10 of the gas distributor tube 2.
  • the injectors 5 and 6 are arranged in a row and all open into a combustion zone 1 1 defined by a flame guide 12 made of refractory steel, which is fixed externally to the tube 1 by bolting in slides (not shown), they -same bolted to the tube 1.
  • the flame guide 12 carries an electric igniter 16 and a flame control device 17, for example by detection of ultraviolet radiation.
  • the arrangements mentioned above are well known in the field of gas and supply air burners.
  • the gas distributor tube 2 is a straight cylindrical tube, having a longitudinal axis 20 disposed approximately, but not necessarily, in the center of the tube
  • the tube 2 is provided with a lateral gas inlet nozzle 21 connected to a supply pipe 22 which passes through the wall of the tube 1 and which supplies the burner with gas from, as l 'indicates arrow G, of an adjustment valve not shown.
  • This valve allows to regulate the gas flow, therefore the power of the burner.
  • the gas may for example be natural gas, liquefied petroleum gas or a manufactured gas such as town or blast furnace gas.
  • An end 2k of the air distributor tube 1 is connected to an air supply pipe 25, by a flange assembly 26 equipped with a diaphragm 26a controlling the air flow, which is blown at - low pressure and arrives as indicated by arrow A, then passes around the gas distributor tube 2 to reach the air injectors 6 which mix it with the gas at the entrance to the combustion zone 1 1.
  • the other end 27 of the tube 1 is closed by a cover 2S fixed on a flange 29 of the tube and traversed by a control shaft 30 provided with a manual flywheel 31 or an automatic control.
  • the gas distributor tube 2 is shown in more detail in FIGS. 3 and 4. It is a straight cylindrical steel tube, supported by the threaded rods 3 and carrying the gas injectors 5. For simplicity, there is n 'has shown that five gas injectors 5a to 5e.
  • Each end of the tube 2 is closed by a plate 32, 33 fixed by means of a threaded cap 34, 35 screwed externally to the tube 2.
  • Two closure nuts 36, 37 are slidably mounted in the inner bore of the tube 2 and each of them closes this bore in a sealed manner between the corresponding end of the tube and the gas inlet nozzle 21.
  • Each of these nuts can be formed for example by a cylindrical piece of bronze pierced with an eccentric longitudinal bore provided with a thread 38, 39 and centered on an axis 40 which is offset by a distance E with respect to l 'axis 20 of the tube 2 and the outer surface of the nut. In this example, this offset E is lateral, but it could be provided in another direction.
  • a rotary bar 41 also centered on the axis 40, extends longitudinally in the tube 2 and is carried by cable gland bearings 42, 43 mounted in the plates 32 and 33.
  • One end 44 of the bar 41 crosses the cap 35 and is connected to the control shaft 30 by means of a suitable coupling 45 (FIG. 1), for example a fork coupling.
  • a suitable coupling 45 for example a fork coupling.
  • the rotary bar 41 is subdivided into two symmetrical elements 48 and 49 which are made integral in rotation by a coupling sleeve 50 and elastic pins 51, approximately in the middle of the length of the tube 2.
  • each element 48, 49 has a cylindrical section 52, 53 rotatably supported by a respective spacer 54, 55 fixed in the tube 2 by * screws 56.
  • the element 48, 49 is retained longitudinally by an elastic ring of the "circlip" type 57.
  • each spacer 54, 55 is pierced with several holes 60, 61 for the passage of gas along the tube 2. - 7 -
  • the flame will widen if the 'the handwheel 31 and the bar 41 are turned in the opposite direction.
  • provision can be made to adjust the gas supply flow at the same time. This adjustment can be done automatically using a pressure sensor on the supply line 22. In another embodiment, it can be controlled by a motorized control of the flame width adjustment mechanism, actuating the rotary bar 41. During this time, the air continues to be supplied to the combustion zone 11 by all the injectors 6, even where the injectors 5 no longer receive gas. In a drying drum as mentioned above, this has the advantage of helping to cool the end regions of the drum.
  • the present invention is not limited to the embodiment described above by way of example, but it extends to any modifications or variants obvious to a person skilled in the art.
  • the eccentric arrangement of the bar 41 is not essential, as shown in FIG. 5.
  • the nuts 36, 37 are replaced - by nuts 66, 67 having a threaded bore centered on the axis 20 of the tube
  • each nut is provided with a lateral groove 68 which slides on a corresponding longitudinal key 69, fixed in the tube 2 by screws 70 and extending over the entire length of the stroke. the nut.
  • This arrangement makes it possible to dispense with the spacers 5, 55 of the previous example and to use a bar 41 in one piece.
  • the eccentric arrangement has the advantage of facilitate sealing and manufacturing.
  • each nut 36, 37 or 66, 67 could also be designed in two elements, one of which provides sealing and the other serves as the nut proper on the thread of the bar 41.
  • shutter members constituted by the nuts 36, 37 could be replaced by members controlled in a different manner, for example by means of sliding rods controlled from the outside of the burner by a linear actuator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Textile Engineering (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

PCT No. PCT/FR89/00004 Sec. 371 Date Jul. 2, 1991 Sec. 102(e) Date Jul. 2, 1991 PCT Filed Jan. 4, 1990 PCT Pub. No. WO90/07680 PCT Pub. Date Jul. 12, 1990.This burner comprises a gas distributor (20) with a row of gas injectors (5a to 5e), the tube being axially inside an air distributor tube. Each gas injector extends through the wall of the air distributor tube via a coaxial air outlet aperture. The gas distributor tube includes two sealing bodies (36, 37) sliding symmetrically on either side of a central gas inlet aperture (21). Each of these bodies is provided with an eccentric longitudinal threaded bore (38, 39) engaging a threaded section of a rotating control rod (41). The two sections (48, 49) are threaded in opposite directions to the thread of the sealing bodies (36, 37), which enables them to move these two sealing bodies simultaneously in order to gradually interrupt or restore the supply of gas to the injectors (5a to 5e) situated at the end of the row without interrupting the supply to the air injectors.

Description

BRULEUR LINEAIRE A GAZ AYANT UNE LARGEUR REGLABLELINEAR GAS BURNER HAVING AN ADJUSTABLE WIDTH
La présente invention concerne un brûleur linéaire à gaz et à air souff lé, comportant un tube distributeur d'air raccordé à une alimentation en air sous pression, un tube distributeur de gaz monté à l'intérieur du tube distributeur d'air et pourvu d'une entrée de gaz raccordée à une alimentation en gaz sous pression, et au moins une rangée longitudinale d'injecteurs de gaz, ces injecteurs s'étendant sensiblement radialement à partir du tube distributeur de gaz à travers des injecteurs d'air montés sur des orifices de sortie d'air ménagés dans la paroi du tube distributeur d'air, chaque injecteur de gaz étant monté sur un orifice de sortie de gaz ménagé dans la paroi du tube distributeur de gaz.The present invention relates to a linear gas and blown air burner, comprising an air distributor tube connected to a pressurized air supply, a gas distributor tube mounted inside the air distributor tube and provided with '' a gas inlet connected to a pressurized gas supply, and at least one longitudinal row of gas injectors, these injectors extending substantially radially from the gas distributor tube through air injectors mounted on air outlet ports in the wall of the air distributor tube, each gas injector being mounted on a gas outlet port in the wall of the gas distributor tube.
Un tel brûleur linéaire à gaz, décrit dans le brevet européen n° 0190091 , présente de grands avantages au point de vue de la sécurité, car le mélange du gaz avec l'air soufflé se fait seulement à l'entrée de la zone de combustion, et au point de vue de la commodité d'exploitation car i l présente un rapport très élevé entre sa puissance maximale et sa puissance minimâle. C'est pourquoi il est très largement utilisé, notamment dans l'industrie alimentaire et dans l'industrie textile. C'est le cas en particulier dans les machines de finissage textile, surtout les rames à sécher et à thermofixer, où il permet à la fois une répartition optimale de la chaleur sur toute la surface du produit à traiter et une modulation de puissance qui va jusqu'à 1 :50 et qui permet, dans des applications aussi différentes que le séchage des tissus ou la τhermofi- xation des teintures, de travailler à des températures très précises quel que soit le besoin de chaleur. Dans cette optique, on commence à utiliser de tels brûleurs linéaires à gaz en remplacement de la vapeur, de l'électricité ou du chauffage à thermofluide, pour chauffer intérieure¬ ment des tambours sécheurs formés par une enveloppe métallique rotative sur laquelle passe une bande d'un produit à sécher tel qu'un tissu, un papier, etc. D'une part, le gaz représente actuellement une énergie bon marché, utilisable avec un rendement très élevé et d'autre part, i l permet l'obtention de températures plus élevées qu'un chauffage à la vapeur, ce qui est nécessaire dans certains traitements thermiques. En outre, on obtient des températures plus précises et mieux réparties, notamment par rapport au chauffage à thermofluide ou électrique. Enfin, un brûleur à gaz représente une installation de chauffage susceptible d'être exploitée d'une manière indépendante, sans être liée à d'autres installations et en particulier à une chaufferie. Par ailleurs, par rapport à d'autres types de brûleurs linéaires à gaz tels que des brûleurs à prémélange, l'utilisation d'un brûleur du type indiqué ci-dessus est particulièrement avantageuse grâce à sa large possibilité de modulation de puissance, permettant un réglage très précis.Such a linear gas burner, described in European patent n ° 0190091, has great advantages from the point of view of safety, since the mixing of the gas with the blown air takes place only at the entrance to the combustion zone. , and from the point of view of operating convenience since it has a very high ratio between its maximum power and its minimum power. This is why it is very widely used, especially in the food industry and in the textile industry. This is the case in particular in textile finishing machines, especially the drying and heat setting reams, where it allows both an optimal distribution of heat over the entire surface of the product to be treated and a power modulation which will up to 1:50 and which allows, in applications as different as drying fabrics or heat-fixing dyes, to work at very precise temperatures whatever the heat requirement. With this in mind, we are starting to use such linear gas burners to replace steam, electricity or thermofluidic heating, for internal heating of drying drums formed by a rotating metal casing over which passes a strip of '' a product to be dried such as a cloth, paper, etc. On the one hand, the gas currently represents a cheap energy, usable with a very high output and on the other hand, it allows obtaining higher temperatures than a steam heating, which is necessary in certain treatments thermal. In addition, we obtain more precise and better distributed temperatures, especially with respect to thermofluidic or electric heating. Finally, a gas burner represents a heating installation capable of being operated independently, without being linked to other installations and in particular to a boiler room. Furthermore, compared to other types of linear gas burners such as premix burners, the use of a burner of the type indicated above is particularly advantageous thanks to its wide possibility of power modulation, allowing a very precise setting.
Cependant, il exste le besoin de pouvoir régler d'une manière assez fine la largeur de la zone chauffée. Par exemple, dans un tambour de séchage de tissu, des essais ont montré que la régularité de séchage est étroitement liée à la largeur active du brûleur à gaz. Si le tissu est de largeur supérieure au brûleur, ses lisières sont insuffisamment séchées. Si le brûleur a une largeur active supérieure à la largeur du tissu, ce dernier est excessivement séché près de ses lisières. En effet, les zones d'extrémités du tambour, qui ne sont pas couvertes par le tissu mais sont tout de même chauffées par le brûleur, peuvent atteindre une température excessive allant jusqu'à environ 00°C qui est préjudiciable aussi bien au tambour qu'au tissu. Si l'on emploie des brûleurs à prémélange du gaz et de l'air comburant, il n'est pas trop difficile de réaliser un mécanisme qui réduit la longueur active du brûleur, en obturant progressivement des orifices de sortie du gaz. La publication GB-A-20^ 756 montre un brûleur linéaire à gaz prémélangé ayant un tube distributeur alimenté à mi-longueur et obturé par deux pistons montés sur un arbre axial fileté dans deux sens opposés. Toutefois, ce type de brûleur à prélémange appartient à une technologie fondamenta¬ lement différente de celle des brûleurs à gaz pur et a d'autres inconvénients mentionnés plus haut. Dans un brûleur à gaz pur et à air soufflé de ce type, une solution pourrait consister à fractionner le brûleur en plusieurs brûleurs linéaires ou ponctuels, avec des vannes extérieures sur les alimentations en gaz correspondantes. Cependant, une telle solution est compliquée, encombrante et coûteuse, et elle ne permet qu'un pas de réglage relativement grossier. La présente invention a donc pour but de fournir un brûleur linéaire à gaz du type indiqué en préambule, équipé d'un dispositif permettant de régler d'une manière précise la largeur active de la flamme, en maintenant enclenchés ou non, d'une manière individuelle, au moins les injecteurs situés près d'une extrémité de la rangée.However, there is the need to be able to adjust the width of the heated zone in a fairly fine manner. For example, in a fabric drying drum, tests have shown that the regularity of drying is closely related to the active width of the gas burner. If the fabric is wider than the burner, its edges are insufficiently dried. If the burner has an active width greater than the width of the fabric, the latter is excessively dried near its edges. In fact, the end zones of the drum, which are not covered by the fabric but are nevertheless heated by the burner, can reach an excessive temperature of up to about 00 ° C. which is detrimental both to the drum and to the drum. 'to the fabric. If gas and combustion air premix burners are used, it is not too difficult to make a mechanism which reduces the active length of the burner, by progressively closing gas outlet orifices. Publication GB-A-20 ^ 756 shows a linear premixed gas burner having a distributor tube fed at mid-length and closed by two pistons mounted on an axial shaft threaded in two opposite directions. However, this type of premix burner belongs to a technology fundamentally different from that of pure gas burners and has other drawbacks mentioned above. In a pure gas and supply air burner of this type, one solution could consist in dividing the burner into several linear or point burners, with external valves on the corresponding gas supplies. However, such a solution is complicated, bulky and expensive, and it allows only a relatively coarse adjustment step. The present invention therefore aims to provide a linear gas burner of the type indicated in the preamble, equipped with a device for precisely adjusting the active width of the flame, keeping it engaged or not, in a way individual, at least the injectors located near one end of the row.
Dans ce but, le brûleur selon l'invention est caractérisé en ce que le tube distributeur de gaz est obturé intérieurement par au moins un organe d'obturation coulissant agencé pour bloquer l'alimentation en gaz d'un tronçon de ce tube comprenant un ou plusieurs injecteurs de gaz, ledit organe d'obturation étant couplé à une barre de commande disposée longitudinalement dans ce tube et reliée à des moyens de commande situés hors de ce tube, et en ce que tous les injecteurs d'air de ladite rangée continuent d'être alimentés en air quand l'alimentation en gaz d'un ou plusieurs injecteurs de gaz est bloquée par ledit organe d'obturation.For this purpose, the burner according to the invention is characterized in that the gas distributor tube is closed internally by at least one sliding shutter member arranged to block the gas supply to a section of this tube comprising one or more several gas injectors, said shutter member being coupled to a control bar disposed longitudinally in this tube and connected to control means located outside this tube, and in that all the air injectors of said row continue to 'be supplied with air when the gas supply to one or more gas injectors is blocked by said shutter member.
Dans une forme de réalisation préférée, la barre de commande est rotative autour de son axe et comporte au moins un tronçon fileté qui est engagé dans un alésage fileté correspondant de l'organe d'obturation, et l'organe d'obturation est pourvu de moyens l'empêchant de tourner dans le tube distributeur de gaz. La barre de commande peut être montée de manière rotative dans deux éléments f ermant les extrémités du tube distributeur de gaz, la barre traversant au moins l'un des éléments pour être reliée aux moyens de commande.In a preferred embodiment, the control bar is rotatable about its axis and comprises at least one threaded section which is engaged in a corresponding threaded bore of the shutter member, and the shutter member is provided with means preventing it from rotating in the gas distributor tube. The control bar can be rotatably mounted in two elements closing the ends of the gas distributor tube, the bar passing through at least one of the elements to be connected to the control means.
De préférence, le tube distributeur de gaz a une section transversale circulaire, de même que l'organe d'obturation, et pour empêcher l'organe d'obturation de tourner dans le tube, la barre de commande et l'alésage fileté de cet organe sont disposés suivam: un axe qui est décentré parPreferably, the gas distributor tube has a circular cross section, as does the closure member, and to prevent the closure member from rotating in the tube, the control rod and the threaded bore of this organ are arranged following: an axis which is off-center by
"rapport à l'axe du tube. " relative to the axis of the tube.
Dans une forme de réalisation particulièrement avantageuse, le tube distributeur de gaz est équipé de deux organes d'obturation coulissants et d'une entrée " latérale de gaz située entre ces deux organes. De préférence, la barre de commande comporte deux éléments filetés dans - if -In a particularly advantageous embodiment, the gas distributor tube is equipped with two sliding shutter members and with a " lateral gas inlet situated between these two members. Preferably, the control bar comprises two threaded elements in - if -
des sens opposés et engagés respectivement dans les deux organes d'obturation, de manière à faire coulisser ces deux organes simultané¬ ment dans des sens opposés. La barre de commande peut être raccordée aux moyens de commande par l'intermédiaire d'un accouplement déboîtable.opposite directions and engaged respectively in the two shutter members, so as to slide these two members simultaneously in opposite directions. The control bar can be connected to the control means by means of a removable coupling.
La présente invention sera mieux comprise à l'aide de la description suivante d'un exemple de réalisation, en référence aux dessins annexés dans lesquels :The present invention will be better understood with the aid of the following description of an exemplary embodiment, with reference to the appended drawings in which:
la figure 1 est une vue schématique en élévation latérale, partiellement coupée, d'une forme de réalisation d'un brûleur à gaz selon l'invention,FIG. 1 is a diagrammatic side elevation view, partially cut away, of an embodiment of a gas burner according to the invention,
la figure 2 est une vue schématique en coupe transversale de ce brûleur, suivant la ligne II - II de la figure 1,FIG. 2 is a schematic cross-sectional view of this burner, along the line II - II of FIG. 1,
la figure 3 est une vue en coupe longitudinale, suivant la ligne III-III de la figure , du tube distributeur de gaz de ce brûleur et du mécanisme de réglage qu'il contient,FIG. 3 is a view in longitudinal section, on line III-III of the figure, of the gas distributor tube of this burner and of the adjustment mechanism which it contains,
la figure est une vue en coupe transversale suivant la ligne IV - IV de la figure 3, etthe figure is a cross-sectional view along line IV - IV of FIG. 3, and
la figure 5 est une vue analogue à la figure et représente une autre forme de réalisation.Figure 5 is a view similar to the figure and shows another embodiment.
En référence aux figures, le brûleur linéaire représenté comporte un tube extérieur distributeur d'air 1, un tube distributeur de gaz 2 monté à l'intérieur du tube 1 dans une position réglable grâce à une paire -de tiges filetées 3 vissées dans la paroi du tube 2 et pourvues d'écrous de blocage 4, et une rangée d'injecteurs de gaz 5 fixés sur le tube 2 perpendiculairement à celui-ci et s'étendant vers l'extérieur, chacun à travers un injecteur d'air 6 formé par un ouvreau tubulaire fixé dans un orifice 7 du tube 1. Chaque injecteur d'air contient une bague de turbulence S, favorisant le mélange du gaz et de l'air comburant à la sortie de l'injecteur de gaz 5. Ce type d'injecteur est bien connu et il est R90/00004With reference to the figures, the linear burner shown comprises an external air distributor tube 1, a gas distributor tube 2 mounted inside the tube 1 in an adjustable position thanks to a pair of threaded rods 3 screwed into the wall of the tube 2 and provided with locking nuts 4, and a row of gas injectors 5 fixed to the tube 2 perpendicular thereto and extending outward, each through an air injector 6 formed by a tubular opening fixed in an orifice 7 of the tube 1. Each air injector contains a swirl ring S, favoring the mixing of the gas and the combustion air at the outlet of the gas injector 5. This type of injector is well known and it is R90 / 00004
- 5 -- 5 -
décrit plus en détail dans le EP-A-0 190 091. Dans le cas présent, chaque injecteur de gaz 5 est pourvu d'une embase filetée 9 qui est vissée dans un alésage taraudé 10 du tube distributeur de gaz 2.described in more detail in EP-A-0 190 091. In the present case, each gas injector 5 is provided with a threaded base 9 which is screwed into a threaded bore 10 of the gas distributor tube 2.
Les injecteurs 5 et 6 sont disposés en une rangée et débouchent tous dans une zone de combustion 1 1 définie par un guide-flamme 12 en acier réfractaire, lequel est fixé extérieurement sur le tube 1 par boulonnage dans des coulisses (non représentées), elles-mêmes boulonnées sur le tube 1. Le guide-flamme 12 porte un allumeur électrique 16 et un dispositif 17 de contrôle de flamme, par exemple par détection de rayonnement ultraviolet. Les dispositions mentionnées ci-dessus sont bien connues dans le domaine des brûleurs à gaz et à air soufflé.The injectors 5 and 6 are arranged in a row and all open into a combustion zone 1 1 defined by a flame guide 12 made of refractory steel, which is fixed externally to the tube 1 by bolting in slides (not shown), they -same bolted to the tube 1. The flame guide 12 carries an electric igniter 16 and a flame control device 17, for example by detection of ultraviolet radiation. The arrangements mentioned above are well known in the field of gas and supply air burners.
Dans cet exemple de réalisation préféré, le tube distributeur, de gaz 2 est un tube cylindrique et rectiligne, ayant un axe longitudinal 20 disposé approximativement, mais pas nécessairement, au centre du tubeIn this preferred embodiment, the gas distributor tube 2 is a straight cylindrical tube, having a longitudinal axis 20 disposed approximately, but not necessarily, in the center of the tube
1. Au milieu de sa longueur, le tube 2 est pourvu d'un embout latéral d'arrivée de gaz 21 raccordé à un tuyau d'alimentation 22 qui traverse ia paroi du tube 1 et qui alimente le brûleur en gaz provenant, comme l'indique la flèche G, d'une vanne de réglage non représentée. Cette vanne permet de régler le débit du gaz, donc la puissance du brûleur. Le gaz peut être par exemple du gaz naturel, du gaz de pétrole liquéfié ou un gaz manufacturé tel que le gaz de ville ou de haut fourneau. Par l'intérieur du tube 2, il atteint les différents injecteurs 5 montés dans les orifices 10.1. In the middle of its length, the tube 2 is provided with a lateral gas inlet nozzle 21 connected to a supply pipe 22 which passes through the wall of the tube 1 and which supplies the burner with gas from, as l 'indicates arrow G, of an adjustment valve not shown. This valve allows to regulate the gas flow, therefore the power of the burner. The gas may for example be natural gas, liquefied petroleum gas or a manufactured gas such as town or blast furnace gas. Through the interior of the tube 2, it reaches the various injectors 5 mounted in the orifices 10.
Une extrémité 2k du tube distributeur d'air 1 est raccordée à une conduite 25 d'alimentation en air, par un assemblage à brides 26 équipé d'un diaphragme 26a commandant le débit d'air, lequel est soufflé à - basse pression et arrive comme l'indique la flèche A, puis passe autour du tube distributeur de gaz 2 pour atteindre les injecteurs d'air 6 qui le mélangent au gaz à l'entrée de la zone de combustion 1 1. L'autre extrémité 27 du tube 1 est obturée par un couvercle 2S fixé sur une bride 29 du tube et traversé par un arbre de commande 30 muni d'un volant manuel 31 ou d'une commande automatique. Le tube distributeur de gaz 2 est représenté plus en détail par les figures 3 et 4. Il s'agit d'un tube rectiligne cylindrique en acier, supporté par les tiges filetées 3 et portant les injecteurs de gaz 5. Pour simplifier, on n'a représenté que cinq injecteurs de gaz 5a à 5e. Chaque extrémité du tube 2 est fermée par une plaque 32, 33 fixée au moyen d'un chapeau fileté 34, 35 vissé extérieurement sur le tube 2.An end 2k of the air distributor tube 1 is connected to an air supply pipe 25, by a flange assembly 26 equipped with a diaphragm 26a controlling the air flow, which is blown at - low pressure and arrives as indicated by arrow A, then passes around the gas distributor tube 2 to reach the air injectors 6 which mix it with the gas at the entrance to the combustion zone 1 1. The other end 27 of the tube 1 is closed by a cover 2S fixed on a flange 29 of the tube and traversed by a control shaft 30 provided with a manual flywheel 31 or an automatic control. The gas distributor tube 2 is shown in more detail in FIGS. 3 and 4. It is a straight cylindrical steel tube, supported by the threaded rods 3 and carrying the gas injectors 5. For simplicity, there is n 'has shown that five gas injectors 5a to 5e. Each end of the tube 2 is closed by a plate 32, 33 fixed by means of a threaded cap 34, 35 screwed externally to the tube 2.
Deux écrous d'obturation 36, 37 sont montés de manière coulissante dans l'alésage intérieur du tube 2 et chacun d'eux ferme cet alésage d'une manière étanche entre l'extrémité correspondante du tube et l'embout d'entrée de gaz 21. Chacun de ces écrous peut être formé par exemple par une pièce cylindrique en bronze percée d'un alésage longitudinal excentrique pourvu d'un filetage 38, 39 et centré sur un axe 40 qui est décalé d'une distance E par rapport à l'axe 20 du tube 2 et de la surface extérieure de l'écrou. Dans cet exemple, ce décalage E est latéral, mais il pourrait être prévu dans une autre direction. Une barre rotative 41, centrée également sur l'axe 40, s'étend longitudinalement dans le tube 2 et est portée par des paliers à presse-étoupe 42, 43 montés dans les plaques 32 et 33. Une extrémité 44 de la barrre 41 traverse le chapeau 35 et est raccordée à l'arbre de commande 30 au moyen d'un accouplement approprié 45 (figure 1), par exemple un accouplement à fourchette. A l'intérieur du tube 2, la barre rotative 41 est subdivisée en deux éléments 48 et 49 symétriques rendus solidaires en rotation par un manchon d'accouplement 50 et des goupilles élastiques 51, approxima- tivement au milieu de la longueur du tube 2. Dans cette zone, chaque élément 48, 49 a un tronçon cylindrique 52, 53 supporté de manière rotative par une entretoise respective 54, 55 fixée dans le tube 2 par des* vis 56. Du côté du milieu du tube, l'élément 48, 49 est retenu longitudinalement par une bague élastique du type "circlips" 57. De l'autre côté de l'entretoise, il est de plus grand diamètre et est pourvu d'un filetage 58, 59 engagé dans lé filetage 38, 39 de l'écrou correspondant 36, 37. Les filetages 39 et 59 sont dans le sens normal, tandis que les filetages 38 et 58 sont dans le sens contraire. Chaque entretoise 54, 55 est percée de plusieurs trous 60, 61 pour le passage du gaz le long du tube 2. - 7 -Two closure nuts 36, 37 are slidably mounted in the inner bore of the tube 2 and each of them closes this bore in a sealed manner between the corresponding end of the tube and the gas inlet nozzle 21. Each of these nuts can be formed for example by a cylindrical piece of bronze pierced with an eccentric longitudinal bore provided with a thread 38, 39 and centered on an axis 40 which is offset by a distance E with respect to l 'axis 20 of the tube 2 and the outer surface of the nut. In this example, this offset E is lateral, but it could be provided in another direction. A rotary bar 41, also centered on the axis 40, extends longitudinally in the tube 2 and is carried by cable gland bearings 42, 43 mounted in the plates 32 and 33. One end 44 of the bar 41 crosses the cap 35 and is connected to the control shaft 30 by means of a suitable coupling 45 (FIG. 1), for example a fork coupling. Inside the tube 2, the rotary bar 41 is subdivided into two symmetrical elements 48 and 49 which are made integral in rotation by a coupling sleeve 50 and elastic pins 51, approximately in the middle of the length of the tube 2. In this zone, each element 48, 49 has a cylindrical section 52, 53 rotatably supported by a respective spacer 54, 55 fixed in the tube 2 by * screws 56. On the side of the middle of the tube, the element 48, 49 is retained longitudinally by an elastic ring of the "circlip" type 57. On the other side of the spacer, it is of larger diameter and is provided with a thread 58, 59 engaged in the thread 38, 39 of the 'corresponding nut 36, 37. The threads 39 and 59 are in the normal direction, while the threads 38 and 58 are in the opposite direction. Each spacer 54, 55 is pierced with several holes 60, 61 for the passage of gas along the tube 2. - 7 -
Ainsi, quand on agit sur le volant de commande 31 de façon à faire tourner la barre 41 dans le sens de la flèche F, donc dans le sens inverse des aiguilles d'une montre, les deux écrous 36 et 37 ne peuvent pas tourner grâce au fait que la barre 41 est maintenue par ses paliers dans une position excentrique, et coulissent dans le tube en se rapprochant symétriquement l'un de l'autre, tandis qu'ils s'éloignent si l'on tourne la barre 41 dans le sens opposé. En se rapprochant, les écrous 36 et 37 vont obturer les orifices 10 dans lesquels sont montés les deux injecteurs 5a et 5e se trouvant à l'extrémité de la rangée. La flamme linéaire du brûleur sera raccourcie symétriquement d'une petite distance à ses deux extrémités, chaque fois que les écrous 36, 37 bloqueront l'alimentation d'une paire supplémentaire d'injecteurs 5. De même, la flamme s'élargira si l'on tourne le volant 31 et la barre 41 dans le sens contraire. Bien entendu, on peut prévoir de régler en même temps le débit d'alimentation du gaz. Ce réglage peut se faire automatiquement à l'aide d'un capteur de pression sur la conduite d'alimentation 22. Dans une autre forme de réalisation, il peut être asservi à une commande motorisée du mécanisme de réglage de la largeur de flamme, actionnant la barre rotative 41. Pendant ce temps, l'air continue à être délivré dans la zone de combustion 11 par tous les injecteurs 6, même là où les injecteurs 5 ne reçoivent plus de gaz. Dans un tambour sécheur tel que mentionné plus haut, ceci présente l'avantage de contribuer à refroidir les zones d'extrémité du tambour.Thus, when one acts on the control wheel 31 so as to rotate the bar 41 in the direction of the arrow F, therefore in an anticlockwise direction, the two nuts 36 and 37 cannot turn thanks to the fact that the bar 41 is held by its bearings in an eccentric position, and slide in the tube while approaching symmetrically one from the other, while they move away if the bar 41 is turned in the opposite. Approaching, the nuts 36 and 37 will close the holes 10 in which are mounted the two injectors 5a and 5e located at the end of the row. The linear flame of the burner will be symmetrically shortened by a small distance at its two ends, each time that the nuts 36, 37 block the supply of an additional pair of injectors 5. Likewise, the flame will widen if the 'the handwheel 31 and the bar 41 are turned in the opposite direction. Of course, provision can be made to adjust the gas supply flow at the same time. This adjustment can be done automatically using a pressure sensor on the supply line 22. In another embodiment, it can be controlled by a motorized control of the flame width adjustment mechanism, actuating the rotary bar 41. During this time, the air continues to be supplied to the combustion zone 11 by all the injectors 6, even where the injectors 5 no longer receive gas. In a drying drum as mentioned above, this has the advantage of helping to cool the end regions of the drum.
La présente invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple, mais elle s'étend à toutes modifications ou variantes évidentes pour un homme du métier. En particulier, la- disposition excentrique de la barre 41 n'est pas indispensable, comme le montre la figure 5. Dans cette variante, les écrous 36, 37 sont remplacés - par des écrous 66, 67 ayant un alésage fileté centré sur l'axe 20 d.u tubeThe present invention is not limited to the embodiment described above by way of example, but it extends to any modifications or variants obvious to a person skilled in the art. In particular, the eccentric arrangement of the bar 41 is not essential, as shown in FIG. 5. In this variant, the nuts 36, 37 are replaced - by nuts 66, 67 having a threaded bore centered on the axis 20 of the tube
2. Afin d'être empêché de tourner, chaque écrou est muni d'une rainure latérale 68 qui coulisse sur une clavette longitudinale correspondante 69, fixée dans le tube 2 par des vis 70 et s'étendant sur toute la longueur de la course de l'écrou. Cette disposition permet de se passer des entretoises 5 , 55 de l'exemple précédent et d'utiliser une barre 41 en une seule pièce. Toutefois, la disposition excentrique a l'avantage de faciliter l'étanchéité et la fabrication. Dans une autre variante on pourrait aussi concevoir chaque écrou 36, 37 ou 66, 67 en deux éléments dont l'un assure l'étanchéité et l'autre sert d'écrou proprement dit sur le filetage de la barre 41.2. In order to be prevented from turning, each nut is provided with a lateral groove 68 which slides on a corresponding longitudinal key 69, fixed in the tube 2 by screws 70 and extending over the entire length of the stroke. the nut. This arrangement makes it possible to dispense with the spacers 5, 55 of the previous example and to use a bar 41 in one piece. However, the eccentric arrangement has the advantage of facilitate sealing and manufacturing. In another variant, each nut 36, 37 or 66, 67 could also be designed in two elements, one of which provides sealing and the other serves as the nut proper on the thread of the bar 41.
II faut aussi remarquer que les organes d'obturation constitués par les écrous 36, 37 pourraient être remplacés par des organes commandés d'une manière différente, par exemple au moyen de tiges coulissantes commandées de l'extérieur du brûleur par un actionneur linéaire. It should also be noted that the shutter members constituted by the nuts 36, 37 could be replaced by members controlled in a different manner, for example by means of sliding rods controlled from the outside of the burner by a linear actuator.

Claims

Revendications claims
1. Brûleur linéaire à gaz et à air soufflé, comportant un tube distributeur d'air (1) raccordé à une alimentation en air sous pression (A), un tube distributeur de gaz (2) monté à l'intérieur du tube distributeur d'air et pourvu d'une entrée de gaz (21) raccordée à une alimentation en gaz sous pression (G), et au moins une rangée longitudinale d'injecteurs de gaz (5) s'étendant sensiblement radialement à partir du tube distributeur de gaz à travers des injecteurs d'air (6) montés sur des orifices de sortie d'air ménagés dans la paroi du tube distributeur d'air, chaque injecteur de gaz étant monté sur un orifice de sortie de gaz (10) ménagé dans la paroi du tube distributeur de gaz, caractérisé en ce que le tube distributeur de gaz (2) est obturé intérieurement par au moins un organe d'obturation coulissant (36, 37, 66, 67) agencé pour bloquer l'alimenta¬ tion en gaz d'un tronçon de ce tube comprenant un ou plusieurs injecteurs de gaz (5), ledit organe d'obturation étant couplé à une barre de commande (41) disposée longitudinalement dans le tube et reliée à des moyens de commande (30, 31) situés hors de ce tube, et en ce que tous les injecteurs d'air (6) de ladite rangée continuent d'être alimentés en air quand l'alimentation en gaz d'un ou plusieurs injecteurs de gaz (5) est bloquée par ledit organe d'obturation.1. Linear gas and supply air burner, comprising an air distributor tube (1) connected to a pressurized air supply (A), a gas distributor tube (2) mounted inside the distributor tube d and provided with a gas inlet (21) connected to a pressurized gas supply (G), and at least one longitudinal row of gas injectors (5) extending substantially radially from the distributor tube of gas through air injectors (6) mounted on air outlet openings in the wall of the air distributor tube, each gas injector being mounted on a gas outlet orifice (10) in the wall of the gas distributor tube, characterized in that the gas distributor tube (2) is internally closed by at least one sliding shutter member (36, 37, 66, 67) arranged to block the gas supply of a section of this tube comprising one or more gas injectors (5), said organ for bturation being coupled to a control bar (41) disposed longitudinally in the tube and connected to control means (30, 31) located outside this tube, and in that all the air injectors (6) of said row continue to be supplied with air when the gas supply to one or more gas injectors (5) is blocked by said shutter member.
2. Brûleur selon la revendication 1 , caractérisé en ce que la barre de commande (41) est rotative autour de son axe (40) et comporte au moins un tronçon fileté (58, 59) qui est engagé dans un alésage fileté correspondant (38, 39) de l'organe d'obturation (36, 37, 66, 67) et en ce que l'organe d'obturation est pourvu de moyens (68, 69) l'empêchant de • tourner dans le tube distributeur de gaz.2. Burner according to claim 1, characterized in that the control bar (41) is rotatable about its axis (40) and comprises at least one threaded section (58, 59) which is engaged in a corresponding threaded bore (38 , 39) of the shutter member (36, 37, 66, 67) and in that the shutter member is provided with means (68, 69) preventing it from • rotating in the gas distributor tube .
3. Brûleur selon la revendication 2, caractérisé en ce que la barre de "commande (41) est montée de manière rotative dans deux éléments (32, 33) f ermant les extrémités du tube distributeur de gaz (2), cette barre traversant au moins l 'un de ces éléments pour être reliée aux moyens de commande (30, 31 ). 3. Burner according to claim 2, characterized in that the " control bar (41) is rotatably mounted in two elements (32, 33) closing the ends of the gas distributor tube (2), this bar passing through at at least one of these elements to be connected to the control means (30, 31).
4. Brûleur selon la revendication 2, caractérisé en ce que le tube distributeur de gaz (2) a une section transversale circulaire, de même que l'organe d'obturation (36, 37), et en ce que, pour empêcher l'organe d'obturation de tourner dans le tube, la barre de commande (41) et l'alésage fileté (38, 39) sont disposés suivant un axe (40) qui est décentré par rapport à l'axe (20) du tube.4. Burner according to claim 2, characterized in that the gas distributor tube (2) has a circular cross section, as well as the closure member (36, 37), and in that, to prevent shutter to rotate in the tube, the control bar (41) and the threaded bore (38, 39) are arranged along an axis (40) which is offset from the axis (20) of the tube.
5. Brûleur selon la revendication 1, caractérisé en ce que le tube distributeur de gaz (2) est équipé de deux organes d'obturation coulissants (36, 37, 66, 67) et d'une entrée latérale de gaz (21) située entre ces deux organes.5. Burner according to claim 1, characterized in that the gas distributor tube (2) is equipped with two sliding shutter members (36, 37, 66, 67) and a lateral gas inlet (21) located between these two organs.
6. Brûleur selon les revendications 2 et 5, caractérisé en ce que la barre de commande (41) comporte deux éléments (48, 49) filetés dans des sens opposés et engagés respectivement dans les deux organes d'obturation (36, 37) de manière à faire coulisser ces deux organes simultanément dans des sens opposés.6. Burner according to claims 2 and 5, characterized in that the control bar (41) comprises two elements (48, 49) threaded in opposite directions and engaged respectively in the two shutter members (36, 37) of so as to slide these two members simultaneously in opposite directions.
7. Brûleur selon la revendication 2, caractérisé en ce que la barre de commande (41) est raccordée aux moyens de commande (30, 31) par l'intermédiaire d'un accouplement déboîtabie (45). 7. Burner according to claim 2, characterized in that the control bar (41) is connected to the control means (30, 31) by means of a disengageable coupling (45).
EP90901598A 1989-01-06 1990-01-04 Linear gas-burner with adjustable width Expired - Lifetime EP0452379B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8900240A FR2641601A1 (en) 1989-01-06 1989-01-06 LINEAR GAS BURNER HAVING ADJUSTABLE WIDTH
FR8900240 1989-01-06
PCT/FR1990/000004 WO1990007680A1 (en) 1989-01-06 1990-01-04 Linear gas-burner with adjustable width

Publications (2)

Publication Number Publication Date
EP0452379A1 true EP0452379A1 (en) 1991-10-23
EP0452379B1 EP0452379B1 (en) 1994-12-07

Family

ID=9377602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90901598A Expired - Lifetime EP0452379B1 (en) 1989-01-06 1990-01-04 Linear gas-burner with adjustable width

Country Status (8)

Country Link
US (1) US5152685A (en)
EP (1) EP0452379B1 (en)
JP (1) JPH04502664A (en)
AT (1) ATE115262T1 (en)
CA (1) CA2045521A1 (en)
DE (1) DE69014858T2 (en)
FR (1) FR2641601A1 (en)
WO (1) WO1990007680A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675242B1 (en) * 1991-04-15 1993-07-09 Gaz De France LINEAR BURNER.
NL9401723A (en) * 1994-10-18 1996-06-03 Gastec Nv Gas-fired dryer.
US5791065A (en) * 1997-02-06 1998-08-11 Asea Brown Boveri, Inc. Gas heated paper dryer
ES2145681B1 (en) * 1997-07-09 2001-04-01 Gamero Llorca Jose INDUSTRIAL KITCHEN.
WO2005026675A2 (en) * 2003-09-05 2005-03-24 Catalytica Energy Systems, Inc. Catalyst module overheating detection and methods of response
US8147240B2 (en) * 2009-03-17 2012-04-03 Hni Technologies Inc. Thin chamber burner
US10571117B1 (en) 2015-08-04 2020-02-25 Warming Trends, Llc System and method for building ornamental flame displays
IT201800010597A1 (en) * 2018-11-27 2020-05-27 Andrea Battistin MACHINE FOR THE PRODUCTION OF TISSUE PAPER.
US12055300B2 (en) 2020-11-24 2024-08-06 Warming Trends, Llc Flame burner
CN115289469A (en) * 2022-06-28 2022-11-04 大唐黑龙江发电有限公司哈尔滨第一热电厂 Radial insertion axial ignition type internal combustion burner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497954A (en) * 1922-02-28 1924-06-17 Joseph P Shaw Low-pressure gas burner
GB204756A (en) * 1922-06-30 1923-10-01 Archie Ewing Improvements in gas burners for fabric singeing and like machines
US1521493A (en) * 1923-12-18 1924-12-30 Whikehart John Gas burner
US1656549A (en) * 1927-03-19 1928-01-17 Warmack George Gas burner
US1820493A (en) * 1929-08-22 1931-08-25 Reagan Martin Gas burner
FR2576087A1 (en) * 1985-01-15 1986-07-18 Alsace Gaz Ind Sa LINEAR BURNER WITH GAS AND AIR BLOW
JPS6438512A (en) * 1987-08-05 1989-02-08 Rinnai Kk Forced draft type combustion apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9007680A1 *

Also Published As

Publication number Publication date
WO1990007680A1 (en) 1990-07-12
FR2641601A1 (en) 1990-07-13
US5152685A (en) 1992-10-06
DE69014858T2 (en) 1995-05-24
EP0452379B1 (en) 1994-12-07
FR2641601B1 (en) 1994-07-13
JPH04502664A (en) 1992-05-14
CA2045521A1 (en) 1990-07-07
DE69014858D1 (en) 1995-01-19
ATE115262T1 (en) 1994-12-15

Similar Documents

Publication Publication Date Title
EP0452379B1 (en) Linear gas-burner with adjustable width
FR2692658A1 (en) Device for controlling at least one directing device, controlling the passage of combustion air, of a burner for gas turbine engine mechanisms.
CH616732A5 (en)
FR2566087A1 (en) FLOW SWITCHING VALVE FOR BLOWING FLUIDS IN A MOLTEN METAL CRUCIBLE
EP0186560A1 (en) Process and device for producing a plasma arc
EP1195557B1 (en) Three-tube burner especially for glass and steel furnaces and method to inject fuel and oxidant in such a burner
EP0010038A1 (en) Torch for two gases
EP0744237B1 (en) Device for controlling together two elements controlled in a rotary way, and nozzle equipped with such a device
EP0915292A1 (en) Universal device for mixing two gaseous fluids
FR2470317A1 (en) CONTROL DISC VALVE, ESPECIALLY USEFUL IN THE SANITARY FIELD
FR2837916A1 (en) Method for varying the hot point position for a flame in glass melting furnace involves varying fuel feed rates to concentric tubes in burner head
FR2583506A1 (en) Gas tap equipped with a safety valve and having a reduced height requirement, for hotplates and gas cooking appliances, in particular for cookers
FR1464931A (en) Fuel control device for main burner and pilot burner
FR2683607A3 (en) CONTROL VALVE WITH MAGNETIC SAFETY DEVICE FOR GAS COOKERS.
BE503720A (en) IMPROVEMENTS TO MIXING VALVES CONTROLLED BY A THERMOSTAT
FR2728059A1 (en) DEVICE FOR CONTROLLING THE FLOW OF TWO GASES AND BURNER PROVIDED WITH SUCH A DEVICE
WO2020115195A1 (en) Thermostatic cartridge for a mixing valve
WO2000009939A1 (en) Device for controlling a gas stream such as a tap with needle valve or regulator valve
FR2722705A1 (en) Air/gas mixing device for feeding fuel/air mixtures to a burner
LU85079A1 (en) DEVICE FOR ADJUSTING THE HOT WIND FLOW RATE IN A WAFER OVEN WIND RACK AND WIND RACK EQUIPPED WITH SUCH A DEVICE
BE514171A (en)
EP0224512A1 (en) Gas iron
BE689836A (en)
BE521803A (en)
CH302857A (en) Apparatus for burning liquid fuel.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910703

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19920824

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COMESSA S.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19941207

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19941207

Ref country code: AT

Effective date: 19941207

Ref country code: GB

Effective date: 19941207

Ref country code: DK

Effective date: 19941207

REF Corresponds to:

Ref document number: 115262

Country of ref document: AT

Date of ref document: 19941215

Kind code of ref document: T

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19941230

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950107

Year of fee payment: 6

REF Corresponds to:

Ref document number: 69014858

Country of ref document: DE

Date of ref document: 19950119

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950124

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950131

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950307

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19941207

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19960131

Ref country code: CH

Effective date: 19960131

Ref country code: LI

Effective date: 19960131

BERE Be: lapsed

Owner name: S.A. COMESSA

Effective date: 19960131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961001

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970127

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980131

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST