WO1994028352A1 - Bruleur a gaz - Google Patents
Bruleur a gaz Download PDFInfo
- Publication number
- WO1994028352A1 WO1994028352A1 PCT/FR1994/000615 FR9400615W WO9428352A1 WO 1994028352 A1 WO1994028352 A1 WO 1994028352A1 FR 9400615 W FR9400615 W FR 9400615W WO 9428352 A1 WO9428352 A1 WO 9428352A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- rings
- burner according
- burner
- ring
- Prior art date
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
- B64B1/62—Controlling gas pressure, heating, cooling, or discharging gas
-
- 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
-
- 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 invention relates to gas burners in general, in particular burners used for proud montgol ⁇ or in an industrial installation such as a heating installation or a steel installation.
- a hot air balloon burner the air stored in the envelope of the hot air balloon is heated thanks to a fireplace located at the bottom of the balloon and nowadays constituted by a gas burner.
- the traditional burners are then supplied with combustible gas, generally with liquefied gas such as propane, by at least one gas inlet connected to the outlet pipe of an associated heating coil whose inlet pipe is connected to a general food organ.
- combustible gas generally with liquefied gas such as propane
- propane liquefied gas
- cylindrical outlet nozzle single or double
- the arrangement of the cylindrical outlet nozzle requires great care when orienting the orientable frame of the nacelle, to avoid the flame getting too close to the envelope of the hot air balloon, and moreover does not always protect against the effects of a gust of wind.
- the radiation of the flame forces the balloonists to be at a sufficient distance from the burner, which does not facilitate visual control of the flame.
- the structure is bulky (as is the case for the mixing bodies used for the air - natural gas mixtures), and requires a supply of supercharged air for large powers, which further increases the complexity and size of the burner's environment.
- the invention aims to solve this problem by designing a gas burner which does not have the aforementioned drawbacks and limitations.
- the main object of the invention is therefore to provide a gas burner whose structure and arrangement make it possible to avoid the emission of undesirable noise, while simplifying the structure and the environment of the burner, even if large powers are required.
- a gas burner supplied with combustible gas by at least one gas inlet, characterized in that it consists of at least two concentric rings supplied individually with gas and each having orifices d gas ejection, to structure the burner flame into a plurality of concentric flames, the gas ejection orifices of the outer ring being further arranged to produce a very regular flow of gas, so that the flame formed on this outer ring constitutes a sonic curtain for the turbulence of the flame formed on the inner ring or rings.
- at least some of the concentric rings are produced in the form of a hollow toric profile having, on the upper face, gas ejection orifices in the form of holes or grooves.
- the outer ring has a very large number of orifices of very small section arranged in a circular ring (s), while the ring or the inner rings have orifices of larger section, also arranged in circular crown (s).
- the concentric rings are produced in the form of a porous toric element in its mass, in particular made of sintered metal or ceramic.
- the gas supply to the ring or the inner rings is ensured step by step, from the outer ring, by associated connection tubes arranged radially.
- the concentric rings have a dirty cross-section of rectangular or square shape.
- the outer ring is supplied with gas by two diametrically opposite gas inlets.
- the outer ring carries two supply tubes which are rigidly secured to the outer or inner side wall of said ring, each tube ending in a connection member ensuring a removable connection with connection pipes.
- the gas burner is used for a hot air balloon, with a gas inlet which is connected to the outlet pipe of at least one associated heating coil whose inlet pipe is connected to a general supply member, it is then advantageous for the concentric rings to be housed in a carcass which supports the heating coil (s), and the side wall of which has "**" air passage openings, a fine screen being arranged behind each of these openings to stabilize the arrival of the air sucked in by the gas ejected from these concentric rings.
- the carcass is lined internally with a screen made of a very fine metallic screen which relates to all the lateral openings of said carcass.
- this burner is preferably equipped with a pilot tube arranged coaxially with the concentric rings and at an adjustable distance from them.
- the pilot tube has a passage section whose diameter is slightly greater than that of the circular ring according to which the ejection orifices of the outer ring are arranged.
- the concentric rings are grouped in a common annular block equipped with concentric grooves which are connected to respective gas inlets and which have respective ejection orifices. arranged in circular rings at an annular face of said block.
- the control tube is supported by the common annular block by axial uprights passing through guide and locking members arranged at the outer periphery of said block.
- - Figure 1 is a sectional view illustrating a hot air balloon hearth with a burner according to the invention, here associated with a double heating coil and mounted in an openwork carcass;
- - Figure 2 is an elevational view of the previous assembly (rotated 180 °), with cutouts in the metal screen which internally doubles the carcass;
- - Figure 3 is a top view of a burner according to the invention, here with two concentric rings;
- FIG. 4 is a section on IV-IV of Figure 3, to better distinguish the connection between the two rings, which are here made in the form of a hollow toric profile;
- FIG. 5 illustrates in axial section a variant of the gas burner according to the invention, equipped with a control tube, more particularly intended for use in an industrial installation such as a heating installation or a steel installation.
- Figures 1 and 2 make it possible to distinguish a hot air balloon focus 10 with a burner 30 according to the invention, associated with a double gas heating coil 14.1 and 14.2 and mounted in a carcass 11.
- the carcass 11 has the form d '' a tub of revolution, whose coping supports angles 12 regularly distributed around the axis X of the hearth 10, each of these angles having an inner plate 13 for holding, so as to support the turns of two coaxial coils 14.1 and 14.2 and overlapping each other.
- Each coil 14.1 and 14.2 comprises an essentially vertical inlet pipe 15.1, 15.2 which is connected to a general supply member 18, and an outlet pipe 16.1, 16.2.
- the two outlet pipes 16.1 and 16.2 are substantially vertical and diametrically opposite with respect to the aforementioned axis X.
- the general supply member 18 here comprises a quick connection connector 20 and a filter 21 which protrude outside the carcass 11, the connector being connected by a hose (not shown here) to a bottle of liquefied gas, such as propane, on board the hot air balloon.
- the general supply member 18 penetrates inside the carcass 11, in the lower part thereof, comprising a supply valve 29, and a spider 22 which supplies a pilot light 24 arranged along the X axis.
- a certain number of equipment are also provided, of conventional type for hot air balloon fireplaces, so that these equipment will only be briefly recalled: there is thus a handle for supplying all or nothing 23 , a piezoelectric igniter 25 connected to an associated actuator 26 which is controlled by an external button 27, and a second tap 28 for a gentle opening (conventional for so-called "cow” burners), the handle 23, the button 27 and the tap 28 projecting below the bottom 29 of the carcass 11.
- the combustible gas therefore arrives via the general supply member 18, and its flow divides in the two inlet pipes 15.1 and 15.2 of the two serpen ⁇ tins 14.1 and 14.2, to finally arrive, through the outlet pipes. 16.1 and 16.2 of these two coils, to connection members 32, by which the gas burner 30 is mounted and the structure and arrangement of which will be described below in more detail.
- the gas burner 30 consists of at least two concentric rings (here two rings 33, 34), supplied individually with gas and each having gas ejection orifices, to structure the burner flame into a plurality of concentric flames, the ejection orifices "* " of gas from the outer ring 33 being further arranged to produce a very regular flow of gas, so that the flame formed on this outer ring constitutes a sonic curtain for the turbulence of the flame formed on the ring or the inner rings (here a single inner ring 34).
- the burner flame is structured into a plurality of circular flames organized on the surface of concentric rings, the number of which will be chosen according to the desired power.
- a burner with two concentric rings 33,34 has been illustrated, each of which is produced in the form of a hollow toric profile having on the upper face gas ejection orifices produced in the form of holes or grooves.
- the hollow O-shaped profile forming the ring 33 is constituted by a U-shaped profile 33.1 at the end of which a circular flange 33.2 has been brazed.
- the inner ring 34 is here produced from a U-shaped profile 34.1 on which a circular flange 34.2 has been brazed.
- Each of the concentric rings 33, 34 has here an essentially square cross section, but this is of course only a possible example. The advantage of such a section is that there is an upper face in the form of a flat crown, respectively 36 or 37, for the rings 33 and 34, upper face on each of which ejection orifices have been made. gas in the form of holes or grooves.
- the outer ring 33 has a very large number of orifices of very small section, here arranged in two concentric circular rings 38, 39, while the inner ring 34 has orifices of larger section, also arranged in two circular crowns 40.41.
- the outer ring 33 has a very large number of small gas ejection holes which allow both to have a very regular flow of gas at the upper face 36 of this ring, it is that is to say a flow practically free from turbulence, and also to have sufficient kinetic energy to suck in the surrounding air supplying the combustion oxygen, and this without jerking.
- the flame formed on this outer ring 33 constitutes a veritable sonic curtain for the turbulence of the flame formed on the inner ring 34, this latter flame giving the required power, but whose turbulence causing the aforementioned sonic nuisances cannot pass through. through the curtain of the external flame.
- This sonic curtain is certainly of limited height, but, it is however capable of channeling upwards any sonic nuisance, so that it is possible to suppress harmful noises for animals, in particular domestic animals.
- a real ecological burner is thus produced by the combination of an exterior flame curtain free from turbulence making a sonic barrier for the nuisances possibly produced by the interior curtain of the power flame.
- the notion of orifice must naturally be "understood in a broad sense within the framework of the invention, insofar as it will not necessarily be holes or grooves machined in the wall of a hollow profile.
- the gas passing through such porous toric elements escapes through all the pores of this element without that there is concentration of flame along a determined crown.
- the invention relates to a sonic curtain formed on the outer ring of the gas burner.
- the supply of gas to the inner ring or rings is preferably provided step by step from the outer ring 33, by tubes of associated connection arranged radially.
- connection provided by two tubes 35 joining the inner side wall of the outer ring 33 to the outer side wall of the inner ring 34.
- the outer ring 33 is in turn supplied with gas by two gas inlets 31, which are diametrically opposite, and each connected to the outlet pipe of the associated heating coil 14.1,14.2.
- the outer ring 33 carries two bent supply tubes 31, which are visible in Figure 1, these tubes being rigidly secured to the outer side wall of the ring 33, and ending in a member connection 32.1 ensuring a removable connection with the outlet pipes of the two reheating coils, by the connection connectors 32 already mentioned above.
- the gas burner 30, with its concentric rings is suspended by the two diametrically opposite bent tubes 31, so that its retention in place at the correct position is perfectly ensured.
- the structure of the flame in extremely fine concentric curtains also facilitates the general orientation of the flame when the pilot acts on the orientable frame 17 of the nacelle, and the elimination of the aiming effect which was obtained. with the vertical cylindrical nozzles of conventional burners, considerably reduces the risk of igniting the balloon envelope.
- the concentric rings 33, 34 are housed in a carcass 11 which supports the heating coil (s), and the side wall 45 of this carcass in this case has air passage openings 42.
- a sieve has also been provided end 43 behind each of these openings to stabilize the arrival of the air sucked in by the gas ejected from the concentric rings.
- Grids could have been provided individually associated with each of the openings 42, but a particularly advantageous embodiment has been illustrated here, according to which the carcass is internally lined with a screen 43 in very fine metal mesh which simultaneously concerns all the lateral openings 42 of said carcass.
- the screen 43 in a metal screen plays an important role in stabilizing the air regulation, in particular by avoiding any harmful effect of gale, and it also provides other important advantages with regard to thermal problems. Indeed, this screen avoids the radiation of the flame by forming, for the pilot and the passengers of the balloon, a true barrier of thermal protection. This significantly improves the comfort of flight for users. In addition, it is also worth mentioning an additional effect which is favorable to the efficiency of the burner, insofar as the air which is sucked through the very fine metal screen undergoes preheating on passing through this screen, so that this recovery of the radiation makes it possible to substantially improve the efficiency of the burner.
- the carcass 11 will preferably have large openings 42 making it possible to obtain a sufficient flow of outside air sucked in by the gas for the supply of combustion oxygen.
- the relative transparency of the very fine metal screen allows the pilot to monitor the flame through the screen at any time, without having to suffer the harmful effects of its radiation.
- FIG. 5 illustrates an alternative embodiment of the burner 30, more specifically designed for use in an industrial installation such as a heating installation or a steel installation.
- the diameter of the inner wall 61 should be chosen carefully to have an optimal diffusion of the air - gas mixture: one could for example choose a diameter slightly greater than that of the circular ring 38 according to which the ejection orifices of the outer ring 33 are arranged.
- the common annular block 50 is equipped with two concentric grooves 54, 55 (similar to the interior space of the two rings of the previous variant) each connected by respective channels 54.1, 55.1 to a gas inlet 31 with connection end piece 31.1.
- the grooves 54, 55 are machined in the outer periphery and the inner periphery of the common annular block 50, and are closed by associated brazed ferrules 5 0.1, 50.2
- the block 50 has an annular face 56 at the level of which the respective ejection orifices are arranged, arranged in two concentric circular rings 38, 40.
- the control tube 60 is preferably supported by the common annular block 50, by virtue of two axial uprights 53 passing through guide members 51 equipped with a locking means 52, these members being here arranged on the outer periphery of said block. This allows the distance between the input of the steering tube 60 and the 'plane of the annular face 56 having the ejection orifices.
- the flame attached by the pilot tube can now be perfectly controlled both in shape and in length.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94917055A EP0699288A1 (fr) | 1993-05-28 | 1994-05-25 | Bruleur a gaz |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR93/06424 | 1993-05-28 | ||
FR9306424A FR2705760B1 (fr) | 1993-05-28 | 1993-05-28 | Brûleur à gaz pour montgolfière. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994028352A1 true WO1994028352A1 (fr) | 1994-12-08 |
Family
ID=9447552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1994/000615 WO1994028352A1 (fr) | 1993-05-28 | 1994-05-25 | Bruleur a gaz |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0699288A1 (fr) |
FR (1) | FR2705760B1 (fr) |
WO (1) | WO1994028352A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108488791A (zh) * | 2018-04-26 | 2018-09-04 | 襄阳宏伟航空器有限责任公司 | 一种热气球用燃烧器低压喷火装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4008041A (en) * | 1975-10-02 | 1977-02-15 | Gerald Alton Roffe | Apparatus for the gas phase combustion of liquid fuels |
GB2045420A (en) * | 1979-02-14 | 1980-10-29 | Payne G F | Improved air heater for hot air balloon |
US4332547A (en) * | 1979-10-01 | 1982-06-01 | Macdonald Jr James D | Thrust augmenter ejector combustion device |
DE4030135A1 (de) * | 1989-12-22 | 1991-06-27 | Schroeder Fire Balloons Gmbh | Duesenkranz fuer einen fluessigpropangasbrenner fuer heissluftballons sowie ein verfahren zur herstellung |
-
1993
- 1993-05-28 FR FR9306424A patent/FR2705760B1/fr not_active Expired - Fee Related
-
1994
- 1994-05-25 WO PCT/FR1994/000615 patent/WO1994028352A1/fr not_active Application Discontinuation
- 1994-05-25 EP EP94917055A patent/EP0699288A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4008041A (en) * | 1975-10-02 | 1977-02-15 | Gerald Alton Roffe | Apparatus for the gas phase combustion of liquid fuels |
GB2045420A (en) * | 1979-02-14 | 1980-10-29 | Payne G F | Improved air heater for hot air balloon |
US4332547A (en) * | 1979-10-01 | 1982-06-01 | Macdonald Jr James D | Thrust augmenter ejector combustion device |
DE4030135A1 (de) * | 1989-12-22 | 1991-06-27 | Schroeder Fire Balloons Gmbh | Duesenkranz fuer einen fluessigpropangasbrenner fuer heissluftballons sowie ein verfahren zur herstellung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108488791A (zh) * | 2018-04-26 | 2018-09-04 | 襄阳宏伟航空器有限责任公司 | 一种热气球用燃烧器低压喷火装置 |
CN108488791B (zh) * | 2018-04-26 | 2024-01-05 | 襄阳宏伟航空器有限责任公司 | 一种热气球用燃烧器低压喷火装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0699288A1 (fr) | 1996-03-06 |
FR2705760B1 (fr) | 1995-07-21 |
FR2705760A1 (fr) | 1994-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2232141B1 (fr) | Brûleur cylindrique à combustion de surface comportant un dispositif pour stabiliser la pression et le debit d'un melange gazeux, et procédé | |
EP1096203A1 (fr) | Emetteur de chauffage à rayonnement infrarouge au gaz | |
FR2581445A1 (fr) | Procede d'alimentation en air de combustion pour une flamme de chauffage industrielle et registre a air utilise | |
EP0291372B1 (fr) | Brûleur à gaz, de type à buse froide | |
WO1999006274A1 (fr) | Installation de vol libre pour la production artificielle d'un vent de sustentation | |
EP2037174B1 (fr) | Outil à main à combustion de gaz amélioré | |
WO1994028352A1 (fr) | Bruleur a gaz | |
EP0178198A2 (fr) | Brûleur à mélange préalable intégré et à flamme pilote intégrée | |
EP0878672B1 (fr) | Système de ventilation avec injection d'air supplémentaire pour l'aide au tirage | |
EP3852587B1 (fr) | Dispositif de cuisson à chaleur soufflée et brassée | |
FR2644562A1 (fr) | Aerotherme d'axe vertical du type assurant une distribution d'air en effet cyclone | |
EP0082775B1 (fr) | Aspirateur statique de fluide gazeux perfectionné | |
EP0998648B1 (fr) | Appareil de chauffage | |
FR2628515A1 (fr) | Bouche de distribution d'air pour plafond | |
FR2884594A1 (fr) | Bruleur/generateur d'air chaud a allumage interne | |
WO2020030791A1 (fr) | Dispositif de cuisson a multi-supports et/ou multi-ustensiles | |
FR2855868A1 (fr) | Bruleur a gaz perfectionne comportant des moyens de commande thermoelectrique incluant un thermocouple interne | |
FR3114735A1 (fr) | Dispositif de cuisson d’aliments | |
WO2020030805A1 (fr) | Dispositif de cuisson à structure ouvrante | |
FR2846073A1 (fr) | Extracteur statique antireflueur pour fumees | |
FR2811410A1 (fr) | Bruleur a melange de gaz et d'air a puissance accrue | |
EP1398567A2 (fr) | Dispositif aspirateur statique pour extraction de fumées | |
FR3084825A1 (fr) | Dispositif de cuisson a chaleur soufflee et brassee | |
EP0878664A1 (fr) | Dispositif d'injection de gaz pour l'aide au tirage dans un système de transport de fluide gazeux | |
BE518289A (fr) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
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 |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994917055 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1995 605080 Date of ref document: 19951128 Kind code of ref document: A Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 1994917055 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1994917055 Country of ref document: EP |