WO2003098109A1 - Torch and device for forming a torch - Google Patents

Torch and device for forming a torch Download PDF

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Publication number
WO2003098109A1
WO2003098109A1 PCT/FR2003/001433 FR0301433W WO03098109A1 WO 2003098109 A1 WO2003098109 A1 WO 2003098109A1 FR 0301433 W FR0301433 W FR 0301433W WO 03098109 A1 WO03098109 A1 WO 03098109A1
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WO
WIPO (PCT)
Prior art keywords
gas
torch
air
blowing
flame
Prior art date
Application number
PCT/FR2003/001433
Other languages
French (fr)
Inventor
Ludovic Chochoy
Original Assignee
Ludovic Chochoy
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
Priority claimed from FR0205814A external-priority patent/FR2839545B1/en
Application filed by Ludovic Chochoy filed Critical Ludovic Chochoy
Priority to AU2003260542A priority Critical patent/AU2003260542A1/en
Priority to EP03752792A priority patent/EP1504221A1/en
Publication of WO2003098109A1 publication Critical patent/WO2003098109A1/en

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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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • 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
    • F23D14/465—Details, e.g. noise reduction means for torches
    • 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
    • F23D14/48—Nozzles
    • F23D14/52—Nozzles for torches; for blow-pipes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to a torch and a device for forming a torch.
  • the torches use two gases, one forming the fuel and the other forming the oxidizer.
  • Some torches use air as an oxidizer, they are relatively inexpensive to purchase and use but have the significant disadvantage of not having a very high flame temperature.
  • heat strippers comprising air heating resistors and a turbine generating a flow of this air through these resistors and then towards the outside of the device.
  • Such a device is capable of stripping a paint thanks to the hot air it produces, but cannot in any way be used as a torch.
  • the present invention aims to remedy these shortcomings.
  • the torch it concerns comprises: - means for heating air or gas and means for blowing this heated air or gas, and
  • This torch is thus a preheated combustion air or gas torch, making it possible to substantially increase the temperature of the flame without using specific gases such as oxygen for example. It has been observed that with this device, the flame temperature is increased by several hundreds of degrees compared to a conventional torch using air as oxidizer.
  • this torch can be used either as a torch or as a "heat gun" when you decide not to light the flame.
  • the invention also relates to a device for forming a torch, which comprises a tubular body equipped with fuel gas supply means, one end of this tubular body having a flame catching structure and the other end of this body. forming a zone for connection to the air or hot gas blowing pipe of an existing device, called a "heat gun", this device comprising means for heating air or gas and means for blowing this air or heated gas.
  • This device thus makes it possible to produce an air or oxidizing gas torch preheated on the basis of an existing heat gun, while retaining a heat gun function when it is decided not to light the flame.
  • connection zone is advantageously shaped to allow rapid connection of this connection zone to the blowing pipe of said existing device.
  • This connection can in particular be produced by friction engagement until jamming.
  • said fuel gas supply means comprise a supply tube, a part of which, situated in said body, is in the shape of a toroid and is arranged coaxially with said body, this part of toric shape being pierced, at its periphery. internal, of several fuel gas flow holes, which are perpendicular or inclined relative to the axis of said body.
  • This toroidal part is located outside the flow of air or oxidizing gas and allows a distributed supply of this air or oxidizing gas. A perfectly homogeneous mixture of oxidizing gas and fuel gas is thus obtained, in a laminar flow.
  • said body comprises two longitudinal portions, of which the one located upstream has a diameter greater than that located on the side of the flame attachment structure and is connected to the latter by a shoulder, and
  • the flame attachment structure advantageously comprises an axial inner tube connected to said body, at its upstream side, by an annular wall pierced with holes.
  • the annular chamber delimited by this axial inner tube and by the body forms a zone of tranquilization of the flow of the gas mixture, and the annular wall pierced serves to slow down the flow of this mixture.
  • Said annular wall pierced preferably has a frustoconical shape with its smallest section located on the downstream side.
  • Said body can be pierced with one or more exhaust holes allowing a quantity of heated air or oxidizing gas to escape outside the body.
  • This exhaust makes it possible, if necessary, to avoid overheating of the heating means which comprises the torch or the apparatus used and / or to avoid forced operation of the blowing means which comprises this torch or this apparatus.
  • One or more of said exhaust holes may be equipped with an exhaust regulation system as a function of temperature, making it possible to modify the section of this hole as a function of temperature.
  • This regulation allows the torch or the device associated with said existing device to always operate optimally.
  • the exhaust regulation system may comprise one or more bimetallic strips fixed to the body near the hole or holes for which the exhaust regulation is to be operated, each bimetallic strip being deformable under the action of heat, between a substantially rectilinear position or slightly curved in which it is located near the wall of the body and thus achieves a more or less important occultation of the hole, and a curved position, which it takes in case of high temperature, in which it releases the hole and thus allows the gas escape.
  • the regulation system can include an annular deflector oriented downstream, to channel the gas escaping from the body.
  • Figure 1 is a longitudinal sectional view, with an apparatus forming a heat gun, before mounting on this apparatus;
  • Figure 2 is a view similar to Figure 1, on an enlarged scale, and
  • Figure 3 is an end view.
  • FIG. 1 represents a device 1 making it possible to form a torch when it is fitted to the air or hot gas blowing pipe of an appliance 2, known as a "heat gun".
  • This device 2 comprises an air inlet opening 3, a turbine 4 generating a flow of this air, electrical resistors 5 for heating this air and a pipe 6 for blowing this air.
  • the device 1 comprises a tubular body 7 equipped with a tube 8 for supplying fuel gas.
  • One end of the body 7 forms a zone 9 for connecting the device 1 to the blowing pipe 6 of the device 2, and the other end of this body 7 comprises a structure 10 for catching the flame.
  • connection zone 9 has an internal diameter adjusted to the external diameter of the tube 6, so as to allow rapid connection of the device 1 to this tube, by friction engagement until locking by wedging.
  • the zone 9 may include a slot 11 allowing its slight circumferential expansion in view of this jamming.
  • the flame attachment structure 10 comprises an axial inner tube 12 connected to the body 7, at its upstream side, by an annular wall 13 pierced with holes.
  • This wall 13 has a frustoconical shape with its smallest section located on the downstream side.
  • the wall 13 makes it possible to brake the flow of the mixture of fuel gas and hot air, and the annular chamber 14 delimited by the tube 12 and by the body 7 forms a zone for tranquilizing the flow of this mixture.
  • the body 7 comprises two longitudinal portions 7a, 7b, one of which is located on the side of the connection zone 9 and the other on the side of the flame catching structure 10.
  • the portion 7a situated on the side of the zone 9 has a diameter greater than the portion 7b situated on the side of the structure 10 and is connected to the latter by a shoulder 15.
  • the portion 7a is pierced with several exhaust holes 16 allowing a quantity of heated air to escape outside the body 7.
  • Each hole 16 is equipped with an exhaust regulation system according to the temperature, comprising a bimetallic strip 17 fixed to the body 7 near the hole 16.
  • This bimetallic strip 17 is deformable under the action of heat, between a substantially straight or slightly curved position in which it is located near the wall of the body 7 and thus achieves a more or less important concealment of the hole 16, and the curved position shown, which it takes in the event of high temperature, in which it releases the hole 16, thus allowing the hot air to escape.
  • the regulation system also includes an annular deflector 20 oriented downstream, to channel the air escaping from the body 7 through the holes 16.
  • the fuel gas supply tube 8 comprises a part 8a located in the body 7, of toroidal shape and arranged coaxially with this body.
  • This part 8a is pierced, at its internal periphery, with several holes 21 for the flow of fuel gas, perpendicular to the axis of the body 7, and is placed against the shoulder 15.
  • This part 8a of the tube 8 allows a distributed supply of fuel gas. In addition, it is located outside the air flow and therefore does not disturb the flow of this flow.
  • the device 2 equipped with the device 1 can thus be used as a heat gun when the flame 100 is not lit.
  • the invention thus provides a device making it possible to form a torch at a high flame temperature, in a simple and rapid manner to be implemented, and at a reduced cost.
  • the torch obtained is well suited for use by an individual, for more or less occasional work.
  • this device retains the function of a thermal stripper when it is decided not to light the flame, with the possibility of eliminating any risk of deterioration of the apparatus 2 thanks to the holes 16 and to the regulation system formed by the bimetallic strips 17.
  • the invention also relates to a torch comprising means 5 for heating air or gas and means 4 for blowing this heated air or gas, and a tubular body 7 equipped with means 8 for supplying fuel gas, forming a pipe 6 for blowing said heated air or gas and comprising a flame attachment structure 10.

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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)

Abstract

The invention concerns a torch comprising: means for heating air or gas and means (4) for blowing said heated air or gas, and a tubular body equipped with means for supplying fuel gas, forming a pipe for blowing said heated air or gas and comprising a flame catching structure. The device (1) comprises a tubular body (7) equipped with means (8) for supplying fuel gas, one end of said tubular body (7) comprising a flame catching structure (10) and the other end of said body (7) forming a zone (9) for connection with the tube (6) blowing hot air or gas from a known apparatus (2) called paint burner, said apparatus (2) including air or gas heating means (5) and means (4) for blowing said heated air or gas.

Description

CHALUMEAU ET DISPOSITIF PERMETTANT DE FORMER TORCH AND DEVICE FOR FORMING
UN CHALUMEAUA TORCH
La présente invention concerne un chalumeau et un dispositif permettant de former un chalumeau. Les chalumeaux utilisent deux gaz, l'un formant le carburant et l'autre formant le comburant.The present invention relates to a torch and a device for forming a torch. The torches use two gases, one forming the fuel and the other forming the oxidizer.
Certains chalumeaux utilisent de l'air comme comburant, lis sont relativement peu onéreux à l'achat et à l'utilisation mais présentent l'inconvénient important de ne pas avoir une température de flamme très élevée.Some torches use air as an oxidizer, they are relatively inexpensive to purchase and use but have the significant disadvantage of not having a very high flame temperature.
D'autres chalumeaux utilisent un comburant pur tel que de l'oxygène, ce qui leur assure une température de flamme beaucoup plus élevée. Ces chalumeaux ont toutefois un coût d'achat relativement élevé et un coût d'utilisation très important, du fait des bouteilles de gaz qu'il est nécessaire d'acheter et de recharger. Ces coûts d'achat et d'utilisation rendent ces chalumeaux guère abordables ou intéressants pour des travaux occasionnels que des particuliers peuvent avoir à accomplir.Other torches use pure oxidizer such as oxygen, which gives them a much higher flame temperature. These torches, however, have a relatively high purchase cost and a very high cost of use, because of the gas cylinders which it is necessary to buy and refill. These costs of purchase and use make these torches hardly affordable or attractive for occasional work that individuals may have to perform.
Il est également connu, par le document GB-A-2 326 934, un dispositif complexe permettant de réaliser un préchauffage de gaz dans un chalumeau de manière à augmenter la température de flamme, ce préchauffage étant assuré par un autre brûleur à gaz et un échangeur thermique.It is also known, from document GB-A-2 326 934, a complex device making it possible to preheat gas in a torch so as to increase the flame temperature, this preheating being provided by another gas burner and a heat exchanger.
Ce dispositif complexe ne remédie en aucune manière à l'inconvénient précité.This complex device in no way remedies the aforementioned drawback.
Il existe en outre des dispositifs dits "décapeurs thermiques", comprenant des résistances de chauffage de l'air et une turbine générant un flux de cet air au travers de ces résistances puis vers l'extérieur du dispositif. Un tel dispositif est à même d'assurer le décapage d'une peinture grâce à l'air chaud qu'il produit mais ne peut en aucune manière être utilisé en tant que chalumeau.There are also devices known as "heat strippers", comprising air heating resistors and a turbine generating a flow of this air through these resistors and then towards the outside of the device. Such a device is capable of stripping a paint thanks to the hot air it produces, but cannot in any way be used as a torch.
Il n'existe pas à ce jour d'appareil pouvant être utilisé en tant que chalumeau mais ayant en plus des possibilités d'utilisation étendue, ni de dispositif permettant de former un chalumeau à température de flamme élevée, de manière simple et rapide à mettre en oeuvre, et à un coût réduit, pouvant ainsi être bien adapté à une utilisation par un particulier, pour des travaux plus ou moins occasionnels.To date, there is no device which can be used as a torch but which also has the possibility of extended use, nor a device enabling a torch to be formed at a high flame temperature, in a simple and quick manner. implemented, and at a reduced cost, can thus be well suited to use by an individual, for more or less occasional work.
La présente invention a pour objectif de remédier à ces lacunes.The present invention aims to remedy these shortcomings.
À cet effet, le chalumeau qu'elle concerne comprend : - des moyens de chauffage d'air ou de gaz et des moyens de soufflage de cet air ou gaz chauffé, etTo this end, the torch it concerns comprises: - means for heating air or gas and means for blowing this heated air or gas, and
- un corps tubulaire équipé de moyens d'alimentation en gaz carburant, formant une tubulure de soufflage dudit air ou gaz chauffé et comportant une structure d'accrochage de flamme. Ce chalumeau est ainsi un chalumeau à air ou gaz comburant préchauffé, permettant d'augmenter sensiblement la température de la flamme sans pour autant utiliser des gaz spécifiques tel que l'oxygène par exemple. Il a pu être observé qu'avec ce dispositif, la température de flamme se trouve augmentée de plusieurs centaines de degrés par rapport à un chalumeau classique utilisant de l'air comme comburant.- A tubular body fitted with fuel gas supply means, forming a pipe for blowing said heated air or gas and comprising a flame attachment structure. This torch is thus a preheated combustion air or gas torch, making it possible to substantially increase the temperature of the flame without using specific gases such as oxygen for example. It has been observed that with this device, the flame temperature is increased by several hundreds of degrees compared to a conventional torch using air as oxidizer.
De plus, ce chalumeau peut être utilisé soit en tant que chalumeau, soit en tant que "décapeur thermique" lorsque l'on décide de ne pas allumer la flamme.In addition, this torch can be used either as a torch or as a "heat gun" when you decide not to light the flame.
L'invention concerne également un dispositif permettant de former un chalumeau, qui comprend un corps tubulaire équipé de moyens d'alimentation en gaz carburant, une extrémité de ce corps tubulaire comportant une structure d'accrochage de flamme et l'autre extrémité de ce corps formant une zone de raccordement à la tubulure de soufflage d'air ou de gaz chaud d'un appareil existant, dénommé "décapeur thermique", cet appareil comprenant des moyens de chauffage d'air ou de gaz et des moyens de soufflage de cet air ou gaz chauffé.The invention also relates to a device for forming a torch, which comprises a tubular body equipped with fuel gas supply means, one end of this tubular body having a flame catching structure and the other end of this body. forming a zone for connection to the air or hot gas blowing pipe of an existing device, called a "heat gun", this device comprising means for heating air or gas and means for blowing this air or heated gas.
Ce dispositif permet ainsi de réaliser un chalumeau à air ou gaz comburant préchauffé sur la base d'un décapeur thermique existant, tout en conservant une fonction de décapeur thermique lorsque l'on décide de ne pas allumer la flamme.This device thus makes it possible to produce an air or oxidizing gas torch preheated on the basis of an existing heat gun, while retaining a heat gun function when it is decided not to light the flame.
Ladite zone de raccordement est avantageusement conformée pour permettre un raccordement rapide de cette zone de raccordement sur la tubulure de soufflage dudit appareil existant. Ce raccordement peut notamment être réalisé par engagement à friction jusqu'à blocage par coincement.Said connection zone is advantageously shaped to allow rapid connection of this connection zone to the blowing pipe of said existing device. This connection can in particular be produced by friction engagement until jamming.
De préférence, lesdits moyens d'alimentation en gaz carburant comprennent un tube d'alimentation dont une partie, située dans ledit corps, est de forme torique et est disposée coaxialement audit corps, cette partie de forme torique étant percée, au niveau de sa périphérie interne, de plusieurs trous d'écoulement de gaz carburant, qui sont perpendiculaires ou inclinés par rapport à l'axe dudit corps.Preferably, said fuel gas supply means comprise a supply tube, a part of which, situated in said body, is in the shape of a toroid and is arranged coaxially with said body, this part of toric shape being pierced, at its periphery. internal, of several fuel gas flow holes, which are perpendicular or inclined relative to the axis of said body.
Cette partie de forme torique est située à l'extérieur du flux d'air ou de gaz comburant et permet une alimentation répartie de cet air ou gaz comburant. Un mélange parfaitement homogène de gaz comburant et de gaz carburant est ainsi obtenu, dans un flux laminaire.This toroidal part is located outside the flow of air or oxidizing gas and allows a distributed supply of this air or oxidizing gas. A perfectly homogeneous mixture of oxidizing gas and fuel gas is thus obtained, in a laminar flow.
De préférence,Preferably,
- ledit corps comprend deux portions longitudinales, dont celle située en amont présente un diamètre supérieur à celle située du côté de la structure d'accrochage de flamme et est raccordée à cette dernière par un épaulement, etsaid body comprises two longitudinal portions, of which the one located upstream has a diameter greater than that located on the side of the flame attachment structure and is connected to the latter by a shoulder, and
- ladite partie de forme torique dudit tube d'alimentation est placée contre cet épaulement. Cet épaulement permet d'effacer au moins partiellement cette partie de forme torique par rapport à la paroi du corps, de sorte que cette partie de forme torique ne perturbe pas l'écoulement du flux d'air chaud ou de gaz chaud lorsque le chalumeau ou ledit appareil existant équipé du dispositif est utilisé en tant que décapeur thermique. La structure d'accrochage de flamme comprend avantageusement un tube intérieur axial raccordé audit corps, au niveau de son côté amont, par une paroi annulaire percée de trous.- Said toroidal part of said supply tube is placed against this shoulder. This shoulder makes it possible to at least partially erase this toroidal part relative to the wall of the body, so that this toric part does not disturb the flow of the flow of hot air or hot gas when the torch or said existing device equipped with the device is used as a heat gun. The flame attachment structure advantageously comprises an axial inner tube connected to said body, at its upstream side, by an annular wall pierced with holes.
La chambre annulaire délimitée par ce tube intérieur axial et par le corps forme une zone de tranquillisation de l'écoulement du mélange de gaz, et la paroi annulaire percée sert à freiner l'écoulement de ce mélange.The annular chamber delimited by this axial inner tube and by the body forms a zone of tranquilization of the flow of the gas mixture, and the annular wall pierced serves to slow down the flow of this mixture.
Ladite paroi annulaire percée a de préférence une forme tronconique avec sa plus faible section située du côté aval. Ledit corps peut être percé d'un ou plusieurs trous d'échappement permettant à une quantité d'air ou de gaz comburant échauffé de s'échapper à l'extérieur du corps.Said annular wall pierced preferably has a frustoconical shape with its smallest section located on the downstream side. Said body can be pierced with one or more exhaust holes allowing a quantity of heated air or oxidizing gas to escape outside the body.
Cet échappement permet, si nécessaire, d'éviter une surchauffe des moyens de chauffage que comprend le chalumeau ou l'appareil utilisé et/ou d'éviter un fonctionnement forcé des moyens de soufflage que comprend ce chalumeau ou cet appareil.This exhaust makes it possible, if necessary, to avoid overheating of the heating means which comprises the torch or the apparatus used and / or to avoid forced operation of the blowing means which comprises this torch or this apparatus.
Un ou plusieurs desdits trous d'échappement peut être équipé d'un système de régulation d'échappement en fonction de la température, permettant de modifier la section de ce trou en fonction de la température.One or more of said exhaust holes may be equipped with an exhaust regulation system as a function of temperature, making it possible to modify the section of this hole as a function of temperature.
Cette régulation permet un fonctionnement toujours optimal du chalumeau ou du dispositif associé audit appareil existant.This regulation allows the torch or the device associated with said existing device to always operate optimally.
Le système de régulation d'échappement peut comprendre un ou plusieurs bilames fixés au corps à proximité du ou des trous dont la régulation d'échappement est à opérer, chaque bilame étant déformable sous l'action de la chaleur, entre une position sensiblement rectiligne ou légèrement courbe dans laquelle il se trouve près de la paroi du corps et réalise ainsi une occultation plus ou moins importante du trou, et une position courbe, qu'il prend en cas de température élevée, dans laquelle il libère le trou et permet ainsi l'échappement du gaz.The exhaust regulation system may comprise one or more bimetallic strips fixed to the body near the hole or holes for which the exhaust regulation is to be operated, each bimetallic strip being deformable under the action of heat, between a substantially rectilinear position or slightly curved in which it is located near the wall of the body and thus achieves a more or less important occultation of the hole, and a curved position, which it takes in case of high temperature, in which it releases the hole and thus allows the gas escape.
Le système de régulation peut inclure un déflecteur annulaire orienté vers l'aval, pour canaliser le gaz s'échappant du corps.The regulation system can include an annular deflector oriented downstream, to channel the gas escaping from the body.
L'invention sera bien comprise, et d'autres caractéristiques et avantages de celle-ci apparaîtront, en référence au dessin schématique annexé, représentant, à titre d'exemple non limitatif, une forme de réalisation préférée du dispositif qu'elle concerne.The invention will be clearly understood, and other characteristics and advantages thereof will appear, with reference to the appended schematic drawing, representing, by way of nonlimiting example, a preferred embodiment of the device which it relates to.
La figure 1 en est une vue en coupe longitudinale, avec un appareil formant un décapeur thermique, avant montage sur cet appareil ; la figure 2 en est une vue similaire à la figure 1 , à échelle agrandie, et la figure 3 en est une vue en bout.Figure 1 is a longitudinal sectional view, with an apparatus forming a heat gun, before mounting on this apparatus; Figure 2 is a view similar to Figure 1, on an enlarged scale, and Figure 3 is an end view.
La figure 1 représente un dispositif 1 permettant de former un chalumeau lorsqu'il est adapté sur la tubulure de soufflage d'air ou de gaz chaud d'un appareil 2, dit "décapeur thermique". Cet appareil 2 comprend une ouverture 3 d'entrée d'air, une turbine 4 générant un flux de cet air, des résistances électriques 5 de chauffage de cet air et une tubulure 6 de soufflage de cet air.FIG. 1 represents a device 1 making it possible to form a torch when it is fitted to the air or hot gas blowing pipe of an appliance 2, known as a "heat gun". This device 2 comprises an air inlet opening 3, a turbine 4 generating a flow of this air, electrical resistors 5 for heating this air and a pipe 6 for blowing this air.
En référence aux figures 2 et 3, il apparaît que le dispositif 1 comprend un corps tubulaire 7 équipé d'un tube 8 d'alimentation en gaz carburant.Referring to Figures 2 and 3, it appears that the device 1 comprises a tubular body 7 equipped with a tube 8 for supplying fuel gas.
Une extrémité du corps 7 forme une zone 9 de raccordement du dispositif 1 à la tubulure de soufflage 6 de l'appareil 2, et l'autre extrémité de ce corps 7 comporte une structure 10 d'accrochage de flamme.One end of the body 7 forms a zone 9 for connecting the device 1 to the blowing pipe 6 of the device 2, and the other end of this body 7 comprises a structure 10 for catching the flame.
La zone de raccordement 9 présente un diamètre interne ajusté au diamètre externe de la tubulure 6, de manière à permettre un raccordement rapide du dispositif 1 à cette tubulure, par engagement à friction jusqu'à blocage par coincement. La zone 9 peut comprendre une fente 11 permettant sa légère dilatation circonférencielle en vue de ce coincement.The connection zone 9 has an internal diameter adjusted to the external diameter of the tube 6, so as to allow rapid connection of the device 1 to this tube, by friction engagement until locking by wedging. The zone 9 may include a slot 11 allowing its slight circumferential expansion in view of this jamming.
La structure 10 d'accrochage de flamme comprend un tube intérieur axial 12 raccordé au corps 7, au niveau de son côté amont, par une paroi annulaire 13 percée de trous. Cette paroi 13 a une forme tronconique avec sa plus faible section située du côté aval.The flame attachment structure 10 comprises an axial inner tube 12 connected to the body 7, at its upstream side, by an annular wall 13 pierced with holes. This wall 13 has a frustoconical shape with its smallest section located on the downstream side.
La paroi 13 permet de freiner l'écoulement du mélange de gaz carburant et d'air chaud, et la chambre annulaire 14 délimitée par le tube 12 et par le corps 7 forme une zone de tranquillisation de l'écoulement de ce mélange.The wall 13 makes it possible to brake the flow of the mixture of fuel gas and hot air, and the annular chamber 14 delimited by the tube 12 and by the body 7 forms a zone for tranquilizing the flow of this mixture.
Comme le montrent les figures 2 et 3, le corps 7 comprend deux portions longitudinales 7a, 7b, dont une est située du côté de la zone de raccordement 9 et l'autre du côté de la structure d'accrochage de flamme 10. La portion 7a située du côté de la zone 9 présente un diamètre supérieur à la portion 7b située du côté de la structure 10 et est raccordée à cette dernière par un épaulement 15.As shown in Figures 2 and 3, the body 7 comprises two longitudinal portions 7a, 7b, one of which is located on the side of the connection zone 9 and the other on the side of the flame catching structure 10. The portion 7a situated on the side of the zone 9 has a diameter greater than the portion 7b situated on the side of the structure 10 and is connected to the latter by a shoulder 15.
La portion 7a est percée de plusieurs trous d'échappement 16 permettant à une quantité d'air échauffé de s'échapper à l'extérieur du corps 7. Chaque trou 16 est équipé d'un système de régulation d'échappement en fonction de la température, comprenant un bilame 17 fixé au corps 7 à proximité du trou 16. Ce bilame 17 est déformable sous l'action de la chaleur, entre une position sensiblement rectiligne ou légèrement courbe dans laquelle il se trouve près de la paroi du corps 7 et réalise ainsi une occultation plus ou moins importante du trou 16, et la position courbe représentée, qu'il prend en cas de température élevée, dans laquelle il libère le trou 16, permettant ainsi l'échappement de l'air chaud.The portion 7a is pierced with several exhaust holes 16 allowing a quantity of heated air to escape outside the body 7. Each hole 16 is equipped with an exhaust regulation system according to the temperature, comprising a bimetallic strip 17 fixed to the body 7 near the hole 16. This bimetallic strip 17 is deformable under the action of heat, between a substantially straight or slightly curved position in which it is located near the wall of the body 7 and thus achieves a more or less important concealment of the hole 16, and the curved position shown, which it takes in the event of high temperature, in which it releases the hole 16, thus allowing the hot air to escape.
Le système de régulation inclut en outre un déflecteur annulaire 20 orienté vers l'aval, pour canaliser l'air s'échappant du corps 7 par les trous 16.The regulation system also includes an annular deflector 20 oriented downstream, to channel the air escaping from the body 7 through the holes 16.
Le tube 8 d'alimentation en gaz carburant comprend une partie 8a située dans le corps 7, de forme torique et disposée coaxialement à ce corps. Cette partie 8a est percée, au niveau de sa périphérie interne, de plusieurs trous 21 d'écoulement de gaz carburant, perpendiculaires à l'axe du corps 7, et est placée contre l'épaulement 15.The fuel gas supply tube 8 comprises a part 8a located in the body 7, of toroidal shape and arranged coaxially with this body. This part 8a is pierced, at its internal periphery, with several holes 21 for the flow of fuel gas, perpendicular to the axis of the body 7, and is placed against the shoulder 15.
Cette partie 8a du tube 8 permet une alimentation répartie en gaz carburant. De plus, elle est située à l'extérieur du flux d'air et ne perturbe donc pas l'écoulement de ce flux. L'appareil 2 équipé du dispositif 1 peut ainsi être utilisé en tant que décapeur thermique lorsque la flamme 100 n'est pas allumée.This part 8a of the tube 8 allows a distributed supply of fuel gas. In addition, it is located outside the air flow and therefore does not disturb the flow of this flow. The device 2 equipped with the device 1 can thus be used as a heat gun when the flame 100 is not lit.
L'invention fournit ainsi un dispositif permettant de former un chalumeau à température de flamme élevée, de manière simple et rapide à mettre en œuvre, et à un coût réduit. Le chalumeau obtenu est bien adapté à une utilisation par un particulier, pour des travaux plus ou moins occasionnels. Ce dispositif conserve cependant une fonction de décapeur thermique lorsque l'on décide de ne pas allumer la flamme, avec possibilité d'éliminer tout risque de détérioration de l'appareil 2 grâce aux trous 16 et au système de régulation formé par les bilames 17.The invention thus provides a device making it possible to form a torch at a high flame temperature, in a simple and rapid manner to be implemented, and at a reduced cost. The torch obtained is well suited for use by an individual, for more or less occasional work. However, this device retains the function of a thermal stripper when it is decided not to light the flame, with the possibility of eliminating any risk of deterioration of the apparatus 2 thanks to the holes 16 and to the regulation system formed by the bimetallic strips 17.
Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle s'étend à toutes les formes de réalisations couvertes par les revendications ci-annexées. Ainsi, l'invention concerne également un chalumeau comprenant des moyens 5 de chauffage d'air ou de gaz et des moyens 4 de soufflage de cet air ou gaz chauffé, et un corps tubulaire 7 équipé de moyens 8 d'alimentation en gaz carburant, formant une tubulure 6 de soufflage dudit air ou gaz chauffé et comportant une structure 10 d'accrochage de flamme. It goes without saying that the invention is not limited to the embodiment described above by way of example but that it extends to all the embodiments covered by the claims appended hereto. Thus, the invention also relates to a torch comprising means 5 for heating air or gas and means 4 for blowing this heated air or gas, and a tubular body 7 equipped with means 8 for supplying fuel gas, forming a pipe 6 for blowing said heated air or gas and comprising a flame attachment structure 10.

Claims

REVENDICATIONS
1 - Chalumeau, caractérisé en ce qu'il comprend :1 - Torch, characterized in that it comprises:
- des moyens (5) de chauffage d'air ou de gaz et des moyens (4) de soufflage de cet air ou gaz chauffé, etmeans (5) for heating air or gas and means (4) for blowing this heated air or gas, and
- un corps tubulaire (7) équipé de moyens (8) d'alimentation en gaz carburant, formant une tubulure (6) de soufflage dudit air ou gaz chauffé et comportant une structure (10) d'accrochage de flamme.- A tubular body (7) equipped with means (8) for supplying fuel gas, forming a pipe (6) for blowing said heated air or gas and comprising a structure (10) for catching the flame.
2 - Dispositif (1) permettant de former un chalumeau selon la revendication 1 , caractérisé en ce qu'il comprend un corps tubulaire (7) équipé de moyens (8) d'alimentation en gaz carburant, une extrémité de ce corps tubulaire (7) comportant une structure (10) d'accrochage de flamme et l'autre extrémité de ce corps (7) formant une zone (9) de raccordement à la tubulure (6) de soufflage d'air ou de gaz chaud d'un appareil existant (2), dénommé "décapeur thermique", cet appareil (2) comprenant des moyens (5) de chauffage d'air ou de gaz et des moyens (4) de soufflage de cet air ou gaz chauffé.2 - Device (1) for forming a torch according to claim 1, characterized in that it comprises a tubular body (7) equipped with means (8) for supplying fuel gas, one end of this tubular body (7 ) comprising a structure (10) for catching the flame and the other end of this body (7) forming a zone (9) for connection to the pipe (6) for blowing air or hot gas from an appliance existing (2), called "heat gun", this device (2) comprising means (5) for heating air or gas and means (4) for blowing this air or heated gas.
3 - Dispositif (1) selon la revendication 2, caractérisé en ce que ladite zone de raccordement (9) est conformée pour permettre un raccordement rapide de cette zone de raccordement (9) à la tubulure (6) de soufflage dudit appareil (2), notamment par engagement à friction jusqu'à blocage par coincement.3 - Device (1) according to claim 2, characterized in that said connection zone (9) is shaped to allow rapid connection of this connection zone (9) to the pipe (6) for blowing said device (2) , in particular by friction engagement until jamming.
4 - Chalumeau selon la revendication 1 ou dispositif (1) selon la revendication 2 ou la revendication 3, caractérisé en ce que lesdits moyens d'alimentation en gaz carburant comprennent un tube d'alimentation (8) dont une partie (8a), située dans ledit corps (7), est de forme torique et est disposée coaxialement audit corps (7), cette partie (8a) de forme torique étant percée, au niveau de sa périphérie interne, de plusieurs trous (21) d'écoulement de gaz carburant, qui sont perpendiculaires ou inclinés par rapport à l'axe dudit corps (7).4 - torch according to claim 1 or device (1) according to claim 2 or claim 3, characterized in that said means for supplying fuel gas comprises a supply tube (8) including a part (8a), located in said body (7), is toroidal in shape and is arranged coaxially with said body (7), this toric-shaped part (8a) being pierced, at its internal periphery, with several gas flow holes (21) fuel, which are perpendicular or inclined with respect to the axis of said body (7).
5 - Chalumeau ou dispositif (1) selon la revendication 4, caractérisé en ce que : - ledit corps (7) comprend deux portions longitudinales (7a, 7b), dont celle située en amont présente un diamètre supérieur à celle située du côté de la structure (10) d'accrochage de flamme et est raccordée à cette dernière par un épaulement (15), et - ladite partie (8a) de forme torique dudit tube d'alimentation (8) est placée contre cet épaulement (15).5 - Torch or device (1) according to claim 4, characterized in that: - Said body (7) comprises two longitudinal portions (7a, 7b), the one located upstream has a diameter greater than that located on the side of the structure (10) for catching the flame and is connected to the latter by a shoulder (15), and - said toroidal part (8a) of said supply tube (8) is placed against this shoulder (15).
6 - Chalumeau selon l'une des revendications 1 , 4 ou 5 ou dispositif (1) selon l'une des revendications 2 à 5, caractérisé en ce que la structure (10) d'accrochage de flamme comprend un tube intérieur axial (12) raccordé audit corps (7), au niveau de son côté amont, par une paroi annulaire (13) percée de trous.6 - Torch according to one of claims 1, 4 or 5 or device (1) according to one of claims 2 to 5, characterized in that the structure (10) for hooking the flame comprises an axial inner tube (12 ) connected to said body (7), at its upstream side, by an annular wall (13) pierced with holes.
7 - Chalumeau ou dispositif (1) selon la revendication 6, caractérisé en ce que ladite paroi annulaire percée (13) a une forme tronconique avec sa plus faible section située du côté aval. 8 - Chalumeau selon l'une des revendications 1 ou 4 à 7 ou Dispositif (1) selon l'une des revendications 2 à 7, caractérisé en ce que son corps (7) est percé d'un ou plusieurs trous d'échappement (16) permettant à une quantité d'air ou de gaz comburant échauffé de s'échapper à l'extérieur du corps (7).7 - Torch or device (1) according to claim 6, characterized in that said annular pierced wall (13) has a frustoconical shape with its smallest section located on the downstream side. 8 - Torch according to one of claims 1 or 4 to 7 or Device (1) according to one of claims 2 to 7, characterized in that its body (7) is pierced with one or more exhaust holes ( 16) allowing a quantity of heated air or oxidizing gas to escape outside the body (7).
9 - Chalumeau ou dispositif (1) selon la revendication 8, caractérisé en ce qu'un ou plusieurs desdits trous d'échappement (16) est équipé d'un système (17) de régulation d'échappement en fonction de la température, permettant de modifier la section de ce trou (16) en fonction de la température.9 - torch or device (1) according to claim 8, characterized in that one or more of said exhaust holes (16) is equipped with a system (17) of exhaust regulation depending on the temperature, allowing to modify the section of this hole (16) as a function of the temperature.
10 - Chalumeau ou dispositif (1) selon la revendication 9, caractérisé en ce que le système de régulation d'échappement comprend un ou plusieurs bilames (17) fixés au corps (7) à proximité du ou des trous (16) dont la régulation d'échappement est à opérer, chaque bilame (17) étant déformable sous l'action de la chaleur, entre une position sensiblement rectiligne ou légèrement courbe dans laquelle il se trouve près de la paroi du corps (7) et réalise ainsi une occultation plus ou moins importante du trou (16), et une position courbe, qu'il prend en cas de température élevée, dans laquelle il libère le trou (16) et permet ainsi l'échappement du gaz. 11 - Chalumeau ou dispositif (1) selon la revendication 8 ou la revendication 9, caractérisé en ce que le système de régulation inclut un déflecteur annulaire (20) orienté vers l'aval, pour canaliser le gaz s'échappant du corps (7) par les trous (16). 10 - Torch or device (1) according to claim 9, characterized in that the exhaust regulation system comprises one or more bimetallic strips (17) fixed to the body (7) near the hole or holes (16), the regulation of which exhaust is to operate, each bimetallic strip (17) being deformable under the action of heat, between a substantially straight or slightly curved position in which it is located near the wall of the body (7) and thus achieves a more concealment or less important the hole (16), and a curved position, which it takes in the event of high temperature, in which it releases the hole (16) and thus allows the escape of the gas. 11 - Torch or device (1) according to claim 8 or claim 9, characterized in that the regulation system includes an annular deflector (20) oriented downstream, for channeling the gas escaping from the body (7) through the holes (16).
PCT/FR2003/001433 2002-05-10 2003-05-12 Torch and device for forming a torch WO2003098109A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003260542A AU2003260542A1 (en) 2002-05-10 2003-05-12 Torch and device for forming a torch
EP03752792A EP1504221A1 (en) 2002-05-10 2003-05-12 Torch and device for forming a torch

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR02/05814 2002-05-10
FR0205814A FR2839545B1 (en) 2002-05-10 2002-05-10 PRE-HEATED AIR TORCH
FR03/05204 2003-04-29
FR0305204A FR2840973A1 (en) 2002-05-10 2003-04-29 DEVICE OF THE TORCH-STEEL TYPE

Publications (1)

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WO2003098109A1 true WO2003098109A1 (en) 2003-11-27

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PCT/FR2003/001433 WO2003098109A1 (en) 2002-05-10 2003-05-12 Torch and device for forming a torch

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EP (1) EP1504221A1 (en)
AU (1) AU2003260542A1 (en)
FR (1) FR2840973A1 (en)
WO (1) WO2003098109A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR2917984A1 (en) 2007-06-29 2009-01-02 Dominique Bayle SUPPORT DEVICE FOR REMOVABLE AND ADJUSTABLE NOZZLE FOR THERMAL SPRAY GUN

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US4726767A (en) * 1985-04-27 1988-02-23 Nakajima Dokosho Company Limited Hot airstream generating device
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GB2326934A (en) * 1997-07-01 1999-01-06 Drax Torches Ltd Burners
JP2000257861A (en) * 1999-03-11 2000-09-22 Senshin Zairyo Riyo Gas Generator Kenkyusho:Kk Combustor for gas turbine

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US4728282A (en) * 1984-09-12 1988-03-01 Air, Ltd. Method and apparatus for conducting a substantially isothermal combustion process in a combustor
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR2917984A1 (en) 2007-06-29 2009-01-02 Dominique Bayle SUPPORT DEVICE FOR REMOVABLE AND ADJUSTABLE NOZZLE FOR THERMAL SPRAY GUN

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FR2840973A1 (en) 2003-12-19
AU2003260542A1 (en) 2003-12-02

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