WO2016146191A1 - Système de four de combustion à éthanol comportant un réservoir logé sur ressort - Google Patents

Système de four de combustion à éthanol comportant un réservoir logé sur ressort Download PDF

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Publication number
WO2016146191A1
WO2016146191A1 PCT/EP2015/055772 EP2015055772W WO2016146191A1 WO 2016146191 A1 WO2016146191 A1 WO 2016146191A1 EP 2015055772 W EP2015055772 W EP 2015055772W WO 2016146191 A1 WO2016146191 A1 WO 2016146191A1
Authority
WO
WIPO (PCT)
Prior art keywords
ethanol
storage vessel
burner
kiln system
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/055772
Other languages
German (de)
English (en)
Inventor
Roman Schwoerer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCHWOERERHAUS KG
Original Assignee
SCHWOERERHAUS KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SCHWOERERHAUS KG filed Critical SCHWOERERHAUS KG
Priority to EP15741743.7A priority Critical patent/EP3271653B1/fr
Priority to PCT/EP2015/055772 priority patent/WO2016146191A1/fr
Publication of WO2016146191A1 publication Critical patent/WO2016146191A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/02—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
    • F23D5/04—Pot-type evaporators, i.e. using a partially-enclosed combustion space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/14—Maintaining predetermined amount of fuel in evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/18—Liquid-fuel supply arrangements forming parts of stoves or ranges
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99009—Combustion process using vegetable derived fuels, e.g. from rapes

Definitions

  • the invention relates to an ethanol-fired furnace system, comprising a burner having a burner ethanol burner, with a storage vessel for ethanol, and with a connecting line between the storage vessel and the burner cartridge.
  • Ethanol furnaces in particular those which are operated with bioethanol, have found widespread use, in particular as so-called decorative kilns.
  • an ethanol burner is provided, the burner cartridge having a bottom with a V-shaped groove.
  • This burner cassette is fed from a storage vessel, usually a refillable or replaceable canister, which supplies ethanol via a connecting line.
  • an intermediate vessel is still present between the storage vessel and the burner cartridge to which the ethanol from the storage vessel is first fed. From this intermediate container, the ethanol is then fed to the burner cassette.
  • a system and method via which a burner for controlling the respective amount of fuel burned more or less Fuel can be supplied.
  • an intermediate vessel is arranged between a storage vessel and the actual burner in which a stationary combustion tube is arranged.
  • the intermediate vessel is connected via a connecting line to the lower end of the vertical burner tube according to the principle of the communicating tube.
  • a float system in the tundish prevents excess fuel from being supplied from a higher reservoir.
  • the tundish is adjustable in height. If it is lowered, the level of fuel in the vertical combustion tube is low, so that only a low heat output is possible. If the storage vessel is raised, the amount of fill in the vertical burner tube rises above the communicating connection, so that more fuel is then available and the heating power can thereby be increased.
  • the object is achieved in that the storage vessel is adjustable in height, wherein the height-adjustable storage vessel is resiliently mounted via a spring arrangement, wherein the spring arrangement is designed such that an ethanol level in the storage vessel during operation constantly equal to an ethanol level in the burner cartridge is, wherein the storage vessel is in each case so far raised with decreasing ethanol content by the spring assembly, that the level equality is set automatically.
  • This configuration of the resilient mounting of the storage vessel ensures that during operation an equal level of fuel prevails in the burner. This then leads to a consistent burner output and, associated with it, a consistent flame pattern.
  • the fuel flows in operation continuously from the storage vessel directly into the burner cartridge.
  • the design of the spring assembly in that the ethanol level in the reservoir is consistent ensures that a consistent level of ethanol is ensured in the burner cartridge.
  • the corresponding characteristics of the spring arrangement are determined by calculation and empirically. That is, it is determined the weight of the storage vessel and the weight of the maximum amount of fuel to be absorbed. The spring arrangement is then designed such that, as the content of fuel in the storage vessel decreases, it is in each case raised in such a way that the fill level in the burner cassette remains unchanged. If one knows the spring constant and the weight of storage vessel plus contained ethanol, the corresponding tracking, ie lifting the storage vessel with decreasing ethanol content, can be determined.
  • Suitable springs are mechanical springs, such as helical springs, in particular cylindrical helical springs, be it tension or compression springs or gas-pressure or liquid-based springs. These should have as linear a spring constant as possible.
  • the storage vessel is suspended on the spring assembly suspended.
  • This measure has the advantage that the hanging arrangement allows very simple trained and friction-minimized and inexpensive tension springs, for example, from a wire wound helical springs, which have a linear spring characteristic. This not only a mechanically simple and reliable spring arrangement is guaranteed, but it is also an economic design possible. This opens up a frictionless design of the spring arrangement.
  • the storage vessel is connected via the connecting line according to the principle of the communicating tube with the burner cartridge.
  • This measure has the advantage that the setting of the constant ethanol level in the burner cartridge can be ensured steadily and simply when the ethanol content in the storage vessel and the lifting associated with it decreases.
  • the storage vessel is directly, without an intermediate container, connected to the burner cartridge.
  • the storage vessel via an adjustment so far lowered that the ethanol level in the storage vessel comes to rest lower than a bottom of the burner cartridge.
  • This measure has the advantage that the storage vessel can be lowered by the adjusting mechanism so far that no more ethanol can be supplied via the connecting line of the burner cassette. This position can then, for example, be entered by the operator via the adjusting mechanism. be set if the burning process is to be interrupted. In this case, ethanol is sucked out of the burner cassette back into the storage vessel.
  • this lowered position is also that position which occupies the storage vessel when the burner system is not in operation or when the storage vessel to be refilled with ethanol. It can be ruled out that already unintentionally flows through the connecting line ethanol in the burner cartridge. This also represents an important safety aspect of such a kiln system.
  • the connecting line is in the storage vessel and is connected via a curved connecting portion with the burner cartridge.
  • This measure has the advantage that at each filling level of ethanol in the storage vessel ethanol is in the connecting line, so that no air can be sucked.
  • the connection with the burner cassette is made via the bent connection section, so that the principle of the communicating tubes or containers, ie storage vessel on the one hand and burner cassette on the other hand, is thereby accomplished.
  • the connecting portion is above the maximum height level of the ethanol level in the burner cartridge.
  • This embodiment has the advantage that when filled with ethanol connecting line, the flow from the storage vessel to the burner cartridge by lowering the storage vessel is easily interrupted. After lowering the storage vessel below the level of the burner cassette, no flow of ethanol into the burner cassette can take place any more. It is also ensured that the ethanol still contained in the burner cartridge is returned to the reservoir.
  • the curved connecting portion opens at its lowest point in the burner cartridge.
  • This measure has the advantage that when lowering the level of the storage vessel via the adjusting mechanism under the bottom of the burner cartridge, the entire ethanol is sucked out of the burner cartridge and transferred to the storage vessel. This contributes significantly to the reliability at the end of a firing process. There remain no amounts of ethanol in the burner, which then evaporate gradually and either lead to odors or, especially when the burner cartridge is still hot, lead to explosive ethanol vapor / air mixtures.
  • ethanol can be safely added to the storage vessel in this position.
  • a suction pump is arranged in the connecting line.
  • This measure has the advantage that, if the connecting line is filled with air, it can be filled by the suction pump with ethanol from the storage vessel. This state occurs, for example, during initial operation or when the supply of ethanol in the storage vessel has been completely used up, and in particular in the embodiment in which the storage vessel is lowered below the level of the bottom of the burner cassette in non-operation. The entire amount of ethanol is sucked through the communicating connection line into the storage vessel, with air entering the connection line.
  • the suction pump is arranged in a bypass line which branches off from the connecting portion and which opens into the burner cartridge.
  • This measure has the advantage that for rapid flooding of the connecting line and the burner cartridge with ethanol, a relatively large diameter bypass line can be provided so that a few ethanol actuated connection between the storage vessel and the burner cartridge can be made by a few operations of the suction pump. It is an effort to operate such a kiln system as possible without electrical equipment or electrically powered engines. If the suction pump is designed as a hand-operated pump, a few pressure surges are sufficient to fill the connecting line with ethanol during commissioning or recommissioning. Through the communicating compound then sufficient ethanol flows into the burner cartridge. The feed during operation is made via the smaller diameter connecting line, which is sufficient to compensate for the low burn-off quantities (0.5 l / min).
  • a check valve is arranged in the suction, which blocks a return of ethanol in the storage vessel.
  • This measure has the advantage that in the embodiment with the adjustment mechanism for lowering the storage vessel, the ethanol must extend over the branch line and not in addition to the possibly cross-section-large bypass line. This promotes a targeted return when lowering the storage vessel. When starting or flooding the burner cartridge, no reflux of ethanol can take place.
  • the spring assembly has suspended tension springs, which are mounted at an upper end to a stationary suspension and are connected at the lower end to the storage vessel.
  • This embodiment allows the use of mechanically simple and stable helical tension springs, which have a linear spring characteristic over other springs over a relatively long range.
  • This type of suspension of the storage vessel is also structurally easy to accomplish, it results in easier assembly and disassembly, for example, by the tension springs are posted at its upper end to the suspension or at its junction with the storage vessel.
  • the adjusting mechanism on a cross bar, which is operable by an operator from outside.
  • This measure has the advantage that on the cross bar, the operator can take this from the outside and can easily perform the lowering of the storage vessel below the lowest level of the burner cartridge.
  • the storage vessel can only be moved downwards by the crossbar.
  • the kiln system is housed in a housing which is transportable in its entirety.
  • the kiln system is a self-contained structure that can be installed or installed as a module, for example as a furniture built-in oven in a niche in a building.
  • this opens up the possibility of simply transporting the kiln system, if it is not to be used in a closed room, to set it up, for example, on a balcony or terrace to serve as a decorative stove.
  • the burner can be covered by an adjustable cover from air supply.
  • This measure has the advantage that the flame can be extinguished by the adjustable cover and at the same time it is ensured that no air can still communicate with existing hot ethanol vapors, so that deflagration is excluded.
  • a valve is arranged in the connecting line, which blocks a flow of ethanol through the connecting line in one position.
  • This measure also meets the safety aspect to the effect that it can be ruled out in principle that ethanol is ever supplied to the burner.
  • This valve should be closed during the aspiration process to allow the ethanol to flow through the bypass line.
  • a piezo igniter for igniting the ethanol is mounted in the burner.
  • This measure which is known per se, has the advantage that igniting the burner is easily accomplished without the need for matches, lighters or igniters supplied electrically by the power supply. This promotes the compact and self-sufficient design of the ethanol furnace system as mentioned above.
  • FIG. 1 is a highly schematic side view of an ethanol kiln system in a zero position
  • Figure 2 is a side view comparable to Figure 1 in a first operating position with a filled storage vessel
  • FIG. 3 shows a representation comparable to FIGS. 1 and 2 with the storage vessel almost empty;
  • Figure 4 is an exploded view of the burner
  • Figure 5 is a perspective view of the received in a housing furnace system.
  • ethanol-fired furnace system shown in the figures is indicated in its entirety by the reference numeral 10.
  • the burner or the burner cassette it is meant in each case such a construction that is adapted and suitable exclusively for the combustion of ethanol.
  • the term "ethanol” relates not only to the chemical substance ethyl alcohol, but in particular to bio-ethanol, which was produced exclusively from biomass, ie from a renewable carbon carrier or from the biodegradable fractions of waste.
  • the basic components of the kiln system 10 will first be described in conjunction with FIG. 1.
  • the kiln system 10 is accommodated in a housing 12, as can be seen in particular from FIG. 5, wherein in the side view of FIG. 1, a front panel 14 can be seen.
  • a storage vessel 16 in the form of a rectangular rectangular container 22 is arranged, as can be seen in particular from FIG. 5. At its upper end 18, the storage vessel 16 is connected to a spring arrangement 20.
  • the container 22 of the storage vessel 16 has a bottom 24 in which a depression 26 is provided centrally.
  • the four not shown here upstanding walls of the container 22 are closed by a cover 28.
  • the top of the lid 28 is provided with four mounting flanges 30 which protrude upwardly from the lid 28. These four mounting flanges are symmetrically attached to the corner regions of the rectangular lid 28.
  • the spring assembly 20 has four cylindrical tension springs 34 which are each formed as helically wound from a wire material springs.
  • the respective lower end 32 of a tension spring 34 is connected to a mounting flange 30.
  • the respective upper end 36 of a tension spring 34 is attached to a spring suspension 38.
  • the spring suspension 38 has two horizontally extending support 50, which are fixed at the end to mounting plates, which in turn are attached to the inside of the housing 12. Thus, the spring suspension 38 is fixedly arranged in the housing 12.
  • the spring rate of the overall system of such a parallel circuit is greater than the spring rate of a single spring.
  • the lid 28 has an opening 44 through which a vertically standing filler pipe 42 extends.
  • a pivotable filling funnel 46 is attached.
  • the hopper 46 is accessible via a flap 48 of the housing 12, so that from the outside ethanol 104 can be spent on the hopper 46 and the filler pipe 42 in the storage vessel 16. It can be provided a corresponding level indicator.
  • ethanol-kiln system is used outside of closed premises, larger stocks of ethanol can be kept, so that correspondingly larger storage containers can be provided. In this case, it may also be useful or for technical reasons necessary to provide the storage vessel around another container as a security container. An appropriate connection between the safety container and the storage Vessel 16 may then be transferred too much filled ethanol in the storage vessel 16.
  • the storage vessel 16 communicates via a connecting line 50 with a designated in its entirety by the reference numeral 52 burner.
  • the connecting line 50 has a vertically standing intake pipe 64 which is located in the interior of the storage vessel 16 and, with the exception of the "zero position" shown in FIG. 1, dips into the ethanol 104 received in the container 22.
  • the standing intake pipe 64 extends vertically far beyond the upper end 18 of the storage vessel 16 and then passes over a bent portion 66 in the side of the storage vessel 16 arranged burner 52 via.
  • the bent portion 66 merges into a vertical inlet pipe 68 in the region of the burner 52.
  • the bent portion 66 of the connecting line 50 is higher than the storage vessel 16 and burner 52nd
  • Fig. 1 From Fig. 1 it can be seen that in the region of the bent portion 66 a branching point 78 is provided, from which a further upwardly projecting and approximately U-shaped curved intake pipe 72 is upright, the descending portion up to the lower end of the Brenners 52 is guided.
  • a manual suction pump 74 is arranged with a check valve.
  • the operating element of the manual suction pump 74 is mounted on the front panel 14 and can be operated from the outside.
  • a ball valve 84 arranged, which serves as a shut-off or safety valve and which is also to operate from the outside.
  • the diameter of the intake pipe 72 is slightly larger than the diameter of the connecting line 50.
  • a designated in its entirety by the reference numeral 80 bypass line is created, the meaning and purpose of which described and explained in more detail below shall be.
  • a total of the reference numeral 90 provided adjusting mechanism has a cross bar 92.
  • the cross bar 92 is attached to at least one of the mounting flanges 30 and extends horizontally across the housing 12 and extends through an opening in the front panel 14 to the outside.
  • the crossbar can be pushed down or moved.
  • a pivotable and also removable adjustment handle 96 is present there. This also serves as a level indicator. This also blocks an upward pivoting movement of the cross bar 92 about an articulation point on only one of the mounting flanges 30 as soon as the adjustment handle 96 abuts the housing.
  • the burner 52 has an approximately rectangular, upwardly open burner cartridge 54 having at the lower end a closed bottom 55 which is formed as a V-shaped groove.
  • a U-shaped grate 58 can be pushed, in which a particular hole pattern is recessed at openings.
  • the side openings in the downwardly extending legs of the U-shaped combustion grate 58 are congruent with corresponding openings (not designated here in detail) in the side wall of the burner cassette 54.
  • the recessed at the top of the grate 58 openings allow the flames pass through and thus promote the formation of a specific, very decorative and evenly distributed flame image.
  • a quenching plate 60 can be postponed, which is also formed as a U-shaped structure and whose hole pattern corresponds to the hole pattern of the burner grate 58.
  • the grate 58 is pushed from the top of the burner cartridge 54, wherein the downwardly reaching side edges engage over the side edges of the burner cassette 54, wherein in full load operation, the side openings of grate 58 and burner cassette 54 come to coincide.
  • the quenching plate 60 By laterally displacing the quenching plate 60, for which an adjusting hook 62 is provided, the quenching plate 60 can be moved so that only a small oxygen supply takes place, whereby the flame image, in particular the flame height, can be changed or the oxygen supply is completely prevented , This also makes it possible to stifle the flames within a very short time.
  • FIG. 4 it can also be seen that the intake pipe 72 of the bypass line 80 is connected to a side opening 76 of the burner cassette 54.
  • the side opening 76 is so deep that it is as close as possible to the bottom 54 and its V-groove.
  • an opening 70 is provided in the intake pipe 72, into which the inlet pipe 68 opens.
  • the inlet pipe 68 has a portion 82 which is lower than the side opening 76th
  • the position of the storage vessel 16 shown in FIG. 1 corresponds to the zero position.
  • the storage vessel 16 has been moved to this position by means of the adjusting mechanism 90, the storage vessel 16 has been moved against the pulling force of the springs 34 down until the locking pin 99 is engaged in the corresponding opening on the front panel 14 and the adjusting mechanism 90 and thus the storage vessel 16 holds in this position.
  • Fig. 1 From Fig. 1 it can be seen that the level 108 of ethanol 104 in the storage vessel 16 below the bottom of the burner 52 comes to rest. The lower end of the stationary intake pipe 64 is no longer immersed in the ethanol 104, so that no ethanol can be transferred into the burner 52 in this operating state.
  • the ball valve 84 is closed and the arc splitter 60 hermetically seals the interior of the burner cartridge 54 so that neither ethanol nor oxygen can enter the burner cartridge 54.
  • the locking pin 99 is withdrawn from the opening in the front panel 14 and the storage vessel 16 is moved by the force of the springs 34, depending on the level, vertically upwards.
  • the standing intake pipe 64 dips into the ethanol 104 in the container 22.
  • level indicator 1 14 which is arranged in the region of the adjustment handle 96. Such a condition is shown for example in FIG.
  • the firing of the burner cassette 54 is now proceeded as follows.
  • the ball valve 84 remains or is closed.
  • the manual suction pump 74 is actuated, whereby over the standing intake pipe 64 and the branching point 78 and the bypass line 80, ethanol is transferred into the burner cassette 54 (see arrow 81).
  • the check valve in the manual suction pump 74 prevents backflow of ethanol.
  • the air is removed from the line system and replaced by ethanol 104.
  • a communicating connection between the ethanol 104 in the storage vessel 16 and the interior of the burner cassette 54 is accomplished.
  • the check valve of the manual suction pump 74 now blocks a further flow, which now leads only to the opening of the ball valve 84 via the connecting line 50, as shown in Fig. 2 by the arrow 85.
  • the tension springs 34 and their construction and spring constant are now adjusted so that the storage vessel 16 is gradually moved vertically upward, as shown in Fig. 2 by the arrow 87. This adjustment is in line with ethanol consumption, ensuring that level uniformity at levels 1 12 is maintained.
  • FIG. 3 shows a situation in which the storage vessel 16 has moved into a maximally raised position.
  • the storage vessel 16 is moved downwards via the adjusting mechanism 90.
  • the ethanol level in the container 22 shifts below the level that prevails in the burner cassette 54. Since these two containers are connected via the connecting line 50 according to the principle of communicating tubes, now the remaining amount of ethanol remaining in the burner cassette 54 flows back via the connecting line 50 into the storage vessel 16, which is indicated by the flow arrows 93 in FIG.

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

Abstract

L'invention concerne un système de four de combustion à éthanol comportant un brûleur à éthanol (52) présentant une cassette de brûleur (54), relié au moyen d'une conduite de liaison (50) à un réservoir (16) d'éthanol (104). Le réservoir (16) est réglable en hauteur et est logé élastiquement au moyen d'un dispositif ressort (20), le dispositif ressort (20) étant conçu de telle manière qu'un niveau d'éthanol (112) dans le réservoir (16) est constamment égal en fonctionnement à un niveau d'éthanol (112) dans la cassette de brûleur (54). Lorsque le contenu en éthanol diminue, le réservoir (16) peut être relevé par le dispositif ressort (20) dans une mesure telle que la mise à niveau peut être réalisée automatiquement.
PCT/EP2015/055772 2015-03-19 2015-03-19 Système de four de combustion à éthanol comportant un réservoir logé sur ressort Ceased WO2016146191A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15741743.7A EP3271653B1 (fr) 2015-03-19 2015-03-19 Système de four de combustion à éthanol comportant un réservoir logé sur ressort
PCT/EP2015/055772 WO2016146191A1 (fr) 2015-03-19 2015-03-19 Système de four de combustion à éthanol comportant un réservoir logé sur ressort

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/055772 WO2016146191A1 (fr) 2015-03-19 2015-03-19 Système de four de combustion à éthanol comportant un réservoir logé sur ressort

Publications (1)

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WO2016146191A1 true WO2016146191A1 (fr) 2016-09-22

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WO (1) WO2016146191A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1466126A (fr) * 1966-01-28 1967-01-13 Dispositif automatique de stabilisation et de réglage de débit pour appareils de chauffage alimentés par niveau constant
US5033956A (en) 1989-12-26 1991-07-23 Teledyne Isotopes, Inc. System for and method of controlling fuel flow to a heating device
WO2012000562A1 (fr) 2010-07-02 2012-01-05 Schwoererhaus Kg Brûleur éthanol, destiné en particulier à brûler du bioéthanol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1466126A (fr) * 1966-01-28 1967-01-13 Dispositif automatique de stabilisation et de réglage de débit pour appareils de chauffage alimentés par niveau constant
US5033956A (en) 1989-12-26 1991-07-23 Teledyne Isotopes, Inc. System for and method of controlling fuel flow to a heating device
WO2012000562A1 (fr) 2010-07-02 2012-01-05 Schwoererhaus Kg Brûleur éthanol, destiné en particulier à brûler du bioéthanol

Also Published As

Publication number Publication date
EP3271653A1 (fr) 2018-01-24
EP3271653B1 (fr) 2019-05-15

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