WO1996027762A1 - Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et brûleur le comportant - Google Patents
Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et brûleur le comportant Download PDFInfo
- Publication number
- WO1996027762A1 WO1996027762A1 PCT/FR1996/000301 FR9600301W WO9627762A1 WO 1996027762 A1 WO1996027762 A1 WO 1996027762A1 FR 9600301 W FR9600301 W FR 9600301W WO 9627762 A1 WO9627762 A1 WO 9627762A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conduit
- supply
- gas
- supplying
- valve
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
-
- 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
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/22—Timing network
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/22—Pilot burners
- F23N2227/24—Pilot burners the pilot burner not burning continuously
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/28—Ignition circuits
- F23N2227/30—Ignition circuits for pilot burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/36—Spark ignition, e.g. by means of a high voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/18—Groups of two or more valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/11—Torches
Definitions
- Device for the coordinated control of the flow of at least two gases, and burner comprising it.
- the present invention relates to a device for the coordinated control of the flow of two gases, of the type comprising two supply conduits each provided with a shut-off valve, a first conduit comprising a gas supply connection for an organ pneumatic actuation of the stop valve of the second conduit, and in which there is provided a common member for controlling the supply of said actuator and the flow in the first conduit. It also relates to a burner, in particular a torch, of the type comprising a first conduit for supplying oxidizing gas and a second conduit for supplying combustible gas.
- the invention aims to provide a device for the coordinated control of the gas supply from two separate conduits, this device being simple to make, easy to use, reliable and not having the drawbacks mentioned above.
- the subject of the invention is a device for coordinated control of the flow of two gases, of the aforementioned type, characterized in that the pneumatic action device actuates the stop valve of the second conduit for controlling the circulation of gas only from the second conduit.
- control device can have one or more of the following characteristics:
- the common control member is formed by the stop valve of the first conduit, this valve being arranged upstream of the nozzle;
- the common control member is a distributor arranged on the nozzle, and the stop valve of the first conduit is arranged downstream of the nozzle and is associated with a complementary pneumatic actuator supplied via the common control member;
- the pneumatic actuator complementary to the shutoff valve of the first conduit is connected, in parallel with the actuator of the shutoff valve to the second conduit, to the outlet of the common member control ;
- the distributor forming one common control member has a closed discharge outlet when the distributor is open and adapted to connect the supply outlet of the distributor to the ambient medium when the distributor is closed;
- the device comprises, upstream of or at least one actuating member, a throttle or a buffer chamber forming a differential time delay means for controlling the flow in the two conduits;
- the or each actuating member is a pneumatic cylinder loaded by a spring
- the common control member is a bi-stable valve or distributor provided with a selection device by simple manual impulse
- the common control member is a monostable valve or distributor which normally closes the supply to the actuating member.
- the invention also relates to a device for coordinated control of the flow of more than two gases, comprising more than two supply ducts each provided with a shut-off valve, a first duct comprising a gas supply tap actuators pneumatic shut-off valves of the other conduits, and in which there is provided a common member for controlling the supply of said actuating members and the flow in the first duct, the pneumatic actuating members actuating the stop valves of the other conduits for the control of the gas circulation only of these other conduits.
- the invention also relates to a burner, in particular a blowtorch, of the type comprising a first fuel gas supply pipe and a second fuel gas supply pipe, characterized in that it comprises a device for controlling the two pipes as defined above.
- the burner may include one or more of the following characteristics:
- the burner further comprises an auxiliary supply pipe for combustible gas to an auxiliary ignition device, the gas supply connection from the actuating member is stitched onto the first supply pipe in oxidizing gas, and the shut-off valve associated with the combustible gas supply duct is a distributor, one of the outputs of which is connected to the auxiliary fuel gas supply duct of the auxiliary ignition device, this latter outlet being fed selectively according to the state of the actuating member;
- the burner further comprises an ignition device disposed at the outlet end of the auxiliary fuel gas supply pipe of the auxiliary ignition device, and a piezoelectric element is provided connected to the device. ignition for its supply of electrical energy and actuated by the actuating member after gas supply to said auxiliary ignition device from the distributor; - an insulated supply conductor of the ignition device is disposed inside the auxiliary supply pipe for combustible gas of the auxiliary ignition device; the burner comprises an additional conduit for supplying oxidizing gas, for cutting a material, said additional conduit comprising a shut-off valve, actuated by a pneumatic actuating member stitched on one or the other of the first and second conduits and there is provided a complementary control member disposed on the nozzle for supplying said pneumatic member.
- the invention further relates to a burner, in particular as defined above, of the type comprising a first oxidizing gas supply duct, a second combustible gas supply duct, and an ignition device, characterized in that that one of the conduits has a gas supply nozzle for a pneumatic actuator of a piezoelectric element, the latter being electrically connected to the ignition device for its supply of electrical energy during the supply said action body.
- each conduit comprising a shut-off valve, it further comprises an auxiliary conduit for supplying combustible gas to an auxiliary ignition device, the nozzle for supplying gas to the actuating member is stitched onto the first oxidant gas supply conduit, and said pneumatic actuating member is adapted to actuate the stop valve associated with the fuel gas supply conduit, this stop valve being a distributor, one of the outputs of which is connected to the auxiliary gas supply pipe fuel of the auxiliary ignition device, this output being supplied selectively as a function of the state of the actuating member;
- an insulated conductor supplying the ignition device is disposed inside the auxiliary fuel gas supply pipe of the auxiliary ignition device.
- FIG. 1 is a schematic view of a first embodiment of a control device according to the invention, comprising a single pneumatic actuator,
- FIGS. 2 and 3 are schematic views respectively of a second and of a third embodiment of a control device according to the invention, using two pneumatic actuating members, and
- FIG. 4 is a schematic view of a torch according to the invention provided with a coordinated control device.
- the coordinated control device shown diagrammatically in FIG. 1 comprises two supply conduits 10, 12 for two gases which are assumed to be respectively oxidizing gas, for example oxygen, and combustible gas, for example acetylene.
- the conduits 10 and 12 are supplied from pressurized gas storage tanks 14 and 16. Furthermore, these conduits 10, 12 meet at their outlet end in an end nozzle 18 adapted to supply a heating flame d '' a blowtorch, for example.
- the conduits 10 and 12 can also, alternatively, join in a intermediate mixer connected by a single conduit to the end nozzle.
- a stop valve 20 On the supply duct 10 is arranged a stop valve 20, of any known type.
- a duct 22 for supplying an actuating cylinder 24 is stitched onto the duct 10 downstream of the shut-off valve 20.
- On the tap 22 is arranged a time lag 25.
- the cylinder 24 shown diagrammatically in section in FIG. 1 is a single-acting cylinder of conventional type, comprising a cylindrical body 26 in which a piston 28 is movable.
- This piston 28 defines at the front of the cylinder a sealed front chamber 30 connected to the downstream end of the tap 22 and, at the rear, a rear chamber 32 communicating permanently with the ambient environment by an end opening 34.
- a spring 36 Inside the rear chamber 32 is disposed a spring 36, one end of which is supported on the rear wall of the body 26 and the other end of which rests on the piston 28.
- a rod 38 of the jack, integral with the piston 28, is extended by an actuating rod 40 of a stop valve 42 disposed on the supply pipe 12 of combustible gas, this valve 42 thus being actuated by the jack 24 .
- the stop valve 42 shown diagrammatically in section in FIG. 1, comprises an inlet chamber 44 communicating with an outlet chamber 46 by a bore 48.
- the actuating rod 40 of the valve passes axially through these two chambers and this bore.
- a conical needle 50 integral with the actuating rod 40, is adapted to cooperate with a chamfered end 52 of the bore 48 forming a valve seat in order to close the bore 48 and thus isolate the inlet chamber 44 from the outlet chamber 46.
- the device shown in Figure 1 further includes a nozzle 11 connecting the inlet chamber of a valve 13 similar to the stop valve 42 to the front portion 10A of the supply conduit 10 for oxidizing gas.
- the outlet chamber of the valve 13 is extended by an additional supply pipe 15 for cutting oxygen. This duct opens in the vicinity of the end nozzle 18.
- the actuating rod of the stop valve 13 is connected to the rod of an actuating cylinder 17 similar to the cylinder 24.
- the front chamber of the cylinder 17 is connected to the supply pipe 10 of oxidizing gas by the intermé ⁇ diary of a conduit 19 pricked downstream of the valve 20.
- a control valve 21 is disposed on the nozzle 19.
- This valve 21 is formed by a distributor three oriices or channels and two distinct positions or states. One of its channels, constituting its inlet, is connected to the conduit 10 for supplying oxidant gas.
- a second channel 23 is connected to the ambient environment and constitutes a discharge or exhaust outlet.
- the third channel of the distributor, constituting a supply outlet is connected to the inlet of the front chamber of the jack 17.
- the valve 20 When the valve 20 is closed, that is to say that it does not allow any fluid to pass, the oxidizing gas remains confined in the reservoir 14 and cannot circulate in the supply line 10. In particular, no flow n 'takes place at the nozzle 18 or towards the front chamber 30 of the jack. Thus, the chamber 30 communicates with the ambient medium through the front portion 10A of the supply duct 10 for oxidizing gas. Under the effect of the spring 36, the piston 28 is pushed towards the front of the jack, the actuating rod 38 then being in the extended position. Under these conditions, the needle 50 is pressed against the valve seat 52, which prevents any flow of combustible gas in the supply line 12.
- the oxidizing gas circulates in the supply conduit 10 and flows to the end nozzle 18.
- oxidizing gas flows in the nozzle 22, gradually fills the time balloon 26 and finally increases the pressure inside the front chamber 30 of the jack.
- the piston 28 is moved rearward, thereby retracting the rod 38 of the jack, which releases the needle 50 from the valve seat 52 and then authorizes the passage of the pressurized combustible gas from the tank 16 to the end nozzle 18.
- the rear chamber 32 being in contact with the ambient medium through the opening 34, the air contained in it is free to flow and does not hinder the movement of the piston 28.
- the timing flask 25 constitutes a delay means for actuating the jack 24.
- the valve 20 when the valve 20 is opened, the oxidizing gas immediately circulates in the direction of the end nozzle 18, where it is released .
- a certain delay is necessary before the pressure inside the chamber 30 is sufficient to overcome the resistance of the spring 36. This delay is all the longer as the volume of the delay tank is greater. Indeed, this pressure must be reached both in the chamber 30 and in the balloon 25 before the jack 24 is actuated. Furthermore, this delay is all the longer the lower the pressure inside the oxidant gas tank 14.
- the timer 25 can alternatively be replaced by a throttle reducing the flow in the stitching 22. Such a constriction also constitutes a means of delaying. Furthermore, it is also possible to provide the opening 34 with a delay throttle. Once the supply of oxidizing gas and fuel has been established, it is possible to establish a flame at the end nozzle 18.
- the torch thus formed can be used to heat a part to be cut by flame cutting.
- the valve 21 is open, which leads to the supply of the front chamber of the jack 17 with oxidizing gas coming from the pipe 10.
- the stop valve 13 is then gradually opened, leading to the circulation of oxygen towards the free end of the supply pipe 15 for cutting oxygen.
- valve 21 When the valve 21 is closed, the gas contained in the front chamber of the jack 17 escapes via a discharge outlet 23. Under the effect of the jack spring 17, the valve 13 is then gradually closed. The flow of cutting oxygen from the supply line 10 to the end of the line 15 is thus stopped.
- valve 20 closes, forming a common member for controlling the supply of the jack 24 and the flow in the first conduit 10, the supply of oxidizing gas is stopped.
- the front chamber 30 and the balloon 25 then being maintained in communication with the ambient medium by the nozzle 18, the pressure inside these drops by circulation of the oxidizing gas which they contain towards the ambient medium, and gradually becomes lower than the pressure necessary to overcome the thrust of the spring 36.
- the valve 42 is then gradually closed under the effect of spring 36, which causes the flow of combustible gas to the nozzle 18 to stop.
- FIGS 2 and 3 show diagrammatically two other embodiments of the invention.
- the identical references designate elements common to the two embodiments and to the embodiment of FIG. 1.
- the supply line 12 for combustible gas comprises, as previously, the stop valve 42 actuated by the jack 24.
- the supply line 10 for oxidizing gas comprises, with the exception of any other valve , a stop valve 60 similar to the stop valve 42.
- This valve 60 is actuated by an actuator 62 analogous to the actuator 24 and arranged in a similar manner.
- a nozzle 64 is provided on the supply line 10 upstream of the stop valve 60.
- the third channel of the distributor 66 constituting a power outlet is connected respectively, by the intermediary of two parallel branches 70, 72, to the front chambers of the jacks 24 and 62, which are thus connected to each other .
- These branches 70 and 72 each have a delay throttle 74 and 76.
- the throttle 76 has a larger diameter than the throttle 74.
- the distributor 66 When the distributor 66, forming a common member for controlling the two gases, connects the nozzle 64 to the two branches 70 and 72, thus playing the role of an open valve, the front chambers of the jacks 24 and 62 are supplied with oxidizing gas, causing, like this has been described with reference to FIG. 1, the gradual opening of the valves 42 and 60. Thus, the supply of oxidizing gas and fuel is gradually ensured towards the end nozzle 18.
- the throttles 74 and 76 having different diameters , the actuator 62 associated with the throttle 76 of larger diameter more quickly reaches the pressure necessary to overcome the thrust of the spring 36. Also, the associated valve 60 will be opened faster and earlier than that associated with the actuator 24, for which the feed rate is lower.
- the branches 70 and 72 are connected to the discharge outlet 68.
- the oxidizing gas contained under pressure in the chambers before cylinders 24 and 62 then flows towards the ambient environment, leading to the gradual closing of the associated valves 42 and 60.
- the valve 60 associated with the throttle 76 of larger diameter will be closed before that associated throttle 74 of smaller diameter.
- the front chamber of the cylinder 62 is connected to the third channel of the distributor 66 by a supply conduit 78.
- a supply conduit 78 On the cylindrical body 80 of the cylinder 62 is formed, behind the entry point of the conduit 78, an outlet 82 cylinder 24 supply. outlet 82 is connected by a supply conduit 84 to the front chamber of the jack 24.
- valve 60 is therefore partially open before the opening begins. of valve 42.
- the continuation of the supply of gas oxidizing chambers before cylinders completes the opening of valves 60 and 42.
- throttles not shown, formed on the conduits 78 and 84 make it possible to impose the desired coordination of opening and closing of the valves 42 and 60.
- the springs 36 arranged in the rear chambers of the jacks can also be arranged on the actuating rods 40 of the valves and bear on the body of the latter.
- FIG. 4 is shown schematically an embodiment of a torch according to the invention.
- This torch uses the principle of the first embodiment (FIG. 1), but also includes an automatic auxiliary ignition device.
- the references reproduced from FIG. 1 designate similar elements.
- the nozzle 22 is connected to the rear chamber of a jack 90 in which slides a piston 92 associated in a sealed manner with a jack rod 94 forming the actuating rod of a distributor 96.
- the front chamber of the jack 90 is in communication with the environment.
- the conduit 12 for supplying combustible gas is connected to an inlet 98 of the distributor 96, communi ⁇ as with an inlet chamber 100.
- a outlet chamber 102 Behind this inlet chamber 100, along the rod 94 of the jack, is arranged a outlet chamber 102.
- An outlet portion 12A of the fuel gas supply duct 12 extends from this outlet chamber 102 of the distributor 96 to the end nozzle 18.
- the portion 12A comprises a tap 12B flow control.
- the outlet portion 10A of the conduit 10 comprises, downstream of the tap 22, a valve 10B for adjusting the flow rate.
- a supply duct 104 of an auxiliary ignition device 106 is also connected to the outlet chamber 102 by means of a valve 108 with unidirectional actuation of any known type, which can for example be an associated valve in known manner to a unidirectional actuation device marketed by the company TELEMECANIQUE under the name of "retractable roller lever” and bearing the reference XCM Z24.
- the cylinder rod 94 passing through the distributor 96 along the axis of the chambers 100 and 102 has a wall of separation or closure 110 extending in the inlet chamber 100 and adapted to cooperate with a seat 112 of the dispenser provided at the entrance to this chamber to separate the inlet 100 and outlet 102 chambers.
- a cam 114 is further arranged on the cylinder rod 94 inside the outlet chamber 102. This cam 114 is adapted to actuate the valve 108.
- a piezoelectric disc 116 secured to the body of the distributor 96 and connected to an ignition device 118 by an insulated supply conductor 120.
- the ignition device 118 is arranged at the outlet of the auxiliary ignition device 106.
- the cylinder rod 94 has an end point 122 surrounded by a flange 124 on which one end of a spring 126 bears, the other end of which bears on the body of the distributor. , around the p piezoelectric tip 116.
- the tip 122 of the rod 94 exerts pressure on the piezoelectric pellet 116, which generates an electric current transmitted by the supply conductor 120 to the device. ignition 118.
- the spark generated by the ignition device 118 causes the ignition of a flame at the auxiliary ignition device 106.
- the combustible and oxidizing gases circulating in the supply conduits 10 and 12 arriving at the level of the feed nozzle 18, the torch flame is lit by the flame of the auxiliary ignition device.
- the valve 20 is closed again, similarly to the first embodiment, the supply of oxidizing gas ceases and the rod 94 is retracted inside the jack in the opposite direction to the arrow FI, under the effect of the spring 126.
- the cam 114 then passes in line with the valve 108 without causing the opening of the supply duct 104 of the auxiliary ignition device, then the wall 110 comes to isolate the outlet chamber 102, then leading to the complete interruption of fuel gas circulation.
- the section of the supply duct 104 is chosen to be as small as possible.
- a special conduit formed for example of a capillai ⁇ re conduit, which is expensive and fragile, it is possible to use a conventional conduit of larger internal diameter and to have at the l inside the insulated supply conductor 120.
- the cross section of the conduit 104 is reduced by the presence of the conductor 120, and the latter is protected from shocks and projections when using the torch.
- the particular arrangement of the last embodiment of the torch allows automatic re-ignition of the latter in the event of accidental interruption of the oxygen supply upstream of the nozzle 22, for example following an exhaustion of the reservoir of storage 14. Such an interruption can also occur in the event of a pinching or crushing of the pipe connecting the reservoir 14 to the torch, for example under the effect of the weight of a vehicle traveling on the pipe.
- the cylinder 90 After restoration of the oxygen supply, the cylinder 90 is again acted upon, so that the piezoelectric element 116 is again excited, which causes the flame to ignite as explained above.
- This automatic re-ignition is particularly useful since it avoids the release of combustible gas and oxygen into the atmosphere without these being burned after the resumption of the oxygen supply if the control member (valve 20) remained open.
- the circulation of the combustible gas is controlled by a jack actuated by the oxidizing gas. It is understood that the two gases can be interchanged by simple permutation of the storage tanks 14 and 16, the oxidizing gas then being controlled by a jack actuated by the combustible gas. Re-ignition occurs in this case after refueling with combustible gas. However, it seems preferable to actuate the jacks with the oxidizing gas, since the latter is generally odorless and harmless oxygen whereas the combustible gas is frequently an odorous and dangerous gas since it is easily flammable.
- the common member for controlling the flow of the two gases namely, according to the embodiments, the valve 20 or the distributor 66, is a bi-stable member, which is advantageously associated with a selection device by simple manual pressure of one or other of its positions, each of them being held automatically without it being necessary for the user of the torch to maintain any pressure on the control unit. A single pulse on a push button of the control member is then necessary for the ignition, and another pulse is enough to interrupt the operation.
- valve 20 or the distributor 66 is a monostable member which normally closes the supply to the actuating member.
- a permanent pressure on the push button of the control member is necessary to keep the flame lit.
- the supply pipes are closed and the flame goes out.
- the invention can also be applied to a device for controlling more than two gases, conveyed by several separate supply conduits.
- each of the additional conduits is provided with a valve associated with an actuating cylinder, according to an arrangement similar to those described above, and each of the jacks is supplied in parallel or in series from the nozzle arranged on the first conduit.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Feeding And Controlling Fuel (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96904911A EP0758438B1 (fr) | 1995-03-03 | 1996-02-27 | Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et br leur le comportant |
BR9605922A BR9605922A (pt) | 1995-03-03 | 1996-02-27 | Dispositivo de comando coordenado do escoamento de apelo menos dois gases e queimador que o comporta |
DE69607424T DE69607424D1 (de) | 1995-03-03 | 1996-02-27 | Vorrichtung zum koordinierten steuern von mindestens zwei gasströmen, und damit ausgerüstete brenner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR95/02509 | 1995-03-03 | ||
FR9502509A FR2731266B1 (fr) | 1995-03-03 | 1995-03-03 | Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et bruleur le comportant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996027762A1 true WO1996027762A1 (fr) | 1996-09-12 |
Family
ID=9476721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/000301 WO1996027762A1 (fr) | 1995-03-03 | 1996-02-27 | Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et brûleur le comportant |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0758438B1 (fr) |
AR (1) | AR001129A1 (fr) |
BR (1) | BR9605922A (fr) |
CA (1) | CA2189162A1 (fr) |
DE (1) | DE69607424D1 (fr) |
FR (1) | FR2731266B1 (fr) |
WO (1) | WO1996027762A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2803021B1 (fr) | 1999-12-27 | 2002-05-24 | Soudure Autogene Francaise | Chalumeau oxy-combustible |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5741522A (en) * | 1980-08-21 | 1982-03-08 | Seiji Kagawa | Nozzle |
DE3419970A1 (de) * | 1984-05-29 | 1984-12-06 | Daimler-Benz Ag, 7000 Stuttgart | Handbrenner zum autogenschweissen |
-
1995
- 1995-03-03 FR FR9502509A patent/FR2731266B1/fr not_active Expired - Fee Related
-
1996
- 1996-02-27 DE DE69607424T patent/DE69607424D1/de not_active Expired - Lifetime
- 1996-02-27 EP EP96904911A patent/EP0758438B1/fr not_active Expired - Lifetime
- 1996-02-27 CA CA002189162A patent/CA2189162A1/fr not_active Abandoned
- 1996-02-27 BR BR9605922A patent/BR9605922A/pt not_active Application Discontinuation
- 1996-02-27 WO PCT/FR1996/000301 patent/WO1996027762A1/fr active IP Right Grant
- 1996-02-29 AR AR33560196A patent/AR001129A1/es active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5741522A (en) * | 1980-08-21 | 1982-03-08 | Seiji Kagawa | Nozzle |
DE3419970A1 (de) * | 1984-05-29 | 1984-12-06 | Daimler-Benz Ag, 7000 Stuttgart | Handbrenner zum autogenschweissen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 113 (M - 138) 24 June 1982 (1982-06-24) * |
Also Published As
Publication number | Publication date |
---|---|
DE69607424D1 (de) | 2000-05-04 |
CA2189162A1 (fr) | 1996-09-12 |
EP0758438A1 (fr) | 1997-02-19 |
FR2731266B1 (fr) | 1997-05-23 |
BR9605922A (pt) | 1997-11-18 |
AR001129A1 (es) | 1997-09-24 |
FR2731266A1 (fr) | 1996-09-06 |
EP0758438B1 (fr) | 2000-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2143927B1 (fr) | Moteur-fusée à propergol liquide avec obturateur de chambre propulsive | |
EP3362716A1 (fr) | Vanne fluidique a hysteresis | |
FR3003013A1 (fr) | Dispositif de dosage compact pour injecteur a deux circuits de carburant, de preference pour turbomachine d'aeronef | |
FR2612087A1 (fr) | Pistolet a adhesif du type a combustion catalytique | |
EP0313479B1 (fr) | Appareil chauffant avec brûleur catalytique | |
EP2143928A1 (fr) | Dispositif d'injection de monoergol à forte modulation du débit | |
FR2492950A1 (fr) | Allumeur a element piezo-electrique | |
EP0758438A1 (fr) | Dispositif de commande coordonnee de l'ecoulement d'au moins deux gaz, et br leur le comportant | |
CA2046363A1 (fr) | Bruleur catalytique | |
EP1110789A1 (fr) | Clapet pour réservoir de carburant et réservoir ainsi équipé | |
FR2983926A1 (fr) | Actionneur d'ouvrant comportant des moyens de mise rapide a la pression atmospherique en fin d'ouverture de l'ouvrant | |
FR2500064A2 (fr) | Dispositif d'allumage de carburant injecte dans un milieu gazeux en ecoulement rapide | |
CA2429217C (fr) | Dispositif de decharge brusque d'air avec conduite d'ejection amelioree | |
FR2816665A1 (fr) | Injecteur a dispositif de commande en cascade et alimente a partir d'une rampe commune | |
EP0031279B1 (fr) | Chalumeau à deux gaz muni d'un dispositif anti-inflammation interne | |
EP0743489B1 (fr) | Installation d'alimentation en gaz, équipement de mise en oeuvre d'une flamme la comportant, et détendeur correspondant | |
EP0895026B1 (fr) | Procédé de suppression de la déflagration à l'extinction d'une flamme de combustion | |
FR2770261A1 (fr) | Dispositif de limitation de debit de carburant pour moteur a combustion interne a injection | |
FR1464931A (fr) | Dispositif de commande du combustible pour appareil à brûleur principal et à brûleur-pilote | |
EP3425278B1 (fr) | Briquet apte à émettre deux flammes différentes en alternance | |
EP0213021B1 (fr) | Dispositif d'injection à double débit pour veilleuse d'appareils à gaz | |
CH334075A (fr) | Propulseur à réaction | |
FR2502280A1 (fr) | Robinet pour fluides liquides et gazeux | |
FR2697606A1 (fr) | Soupape pour commander l'écoulement d'un fluide sous pression au travers de la section de passage entre deux conduits d'entrée et de sortie. | |
FR2966430A1 (fr) | Systeme de distribution d'un gaz d'actionnement destine a alimenter un actionneur pneumatique, ensemble d'ejection et procede de distribution associe. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): BR CA |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1996904911 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2189162 Country of ref document: CA |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1996904911 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1996904911 Country of ref document: EP |