EP3168533B1 - Irrorateur à liquides - Google Patents

Irrorateur à liquides Download PDF

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Publication number
EP3168533B1
EP3168533B1 EP16450030.8A EP16450030A EP3168533B1 EP 3168533 B1 EP3168533 B1 EP 3168533B1 EP 16450030 A EP16450030 A EP 16450030A EP 3168533 B1 EP3168533 B1 EP 3168533B1
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EP
European Patent Office
Prior art keywords
outlet opening
atomizer
fuel
resonance chamber
nozzle according
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.)
Active
Application number
EP16450030.8A
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German (de)
English (en)
Other versions
EP3168533A1 (fr
Inventor
Andreas Kraxner
Thomas Bartonek
Laszlo Klena
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.)
Cs Combustion Solutions GmbH
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Cs Combustion Solutions GmbH
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Publication of EP3168533A1 publication Critical patent/EP3168533A1/fr
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Publication of EP3168533B1 publication Critical patent/EP3168533B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations

Definitions

  • the invention relates to an atomizing nozzle for atomizing liquids, in particular fuel, comprising a central fuel channel having a central outlet opening and a channel for atomizing medium surrounding the fuel channel, which has a Hartmanngenerator and an annular outlet opening surrounding the central outlet opening, wherein the Hartmanngenerator comprises an annular resonance chamber which is open in the direction of the nozzle axis, wherein the annular outlet opening is bounded on the inside by a conical guide surface, which converges forwards towards the central outlet opening.
  • the invention further relates to a burner with such a Zerstäubungsdüse.
  • Atomizing nozzles of this type in which the annular resonance chamber of the Hartmann generator is open in the direction of the nozzle axis, are, for example, from US 3,908,904 and the AT 285791 B known.
  • atomizing nozzles with Hartmann generator in which the annular resonance chamber is open to the outside, wherein on the WO 2011/050377 A1 and the AT 339456 B is referenced.
  • the emerging from the fuel channel fuel is divided by the ultrasonic vibrations generated in the Hartmann generator into fine droplets, whereby the spray pattern of the fuel and the flame shape can be influenced.
  • the atomization is particularly necessary to increase the surface of the fuel and thus ensure a fast and complete combustion possible.
  • An atomizing nozzle of the type mentioned is further from the DE 2410847 A1 , which discloses the features of the preamble of the first claim, known.
  • a Hartmann generator is a sonic or ultrasonic vibrator and includes an annular nozzle via which the pressurized sputtering medium is introduced into a resonance chamber opposite the nozzle in which the sputtering medium is excited to vibrate and a vibrating field is generated in the region of the fuel channel leaking fuel acts to atomize the fuel.
  • the advantage of such a vibrator is that with a relatively small amount of sputtering medium efficient atomization of the fuel succeeds.
  • the achievable with the vibrator atomization of the fuel makes it possible to burn fuels that consist only partially of combustible components. In particular, fuels with a high water content can thus be supplied to combustion.
  • reflector surfaces are provided in such atomization nozzles, which deflect or direct the excited to vibrate sputtering medium in the desired direction.
  • Such reflector surfaces are usually conical and widen in the axial direction.
  • Atomizing nozzles of the type mentioned above operate with a pressurized gas, e.g. Compressed air or steam, as a sputtering medium, which is a high cost factor in the operation of a Zerstäubungsdüse. Both the amount of sputtering medium and the apparatus and energy costs for providing the required pressure of the sputtering medium represent cost factors.
  • a pressurized gas e.g. Compressed air or steam
  • the invention provides for an atomizing nozzle of the type mentioned, in which the annular outlet opening is bounded on the inside by a conical guide surface, which converges forward toward the central outlet opening, before, that the rearwardly extending imaginary extension of the conical guide surface immersed in the resonance chamber.
  • the guide surface defining the inside of the vibration chamber exiting the resonance chamber is thus arranged so that the sputtered to the vibration sputtering medium from the outlet from the open side of the resonance chamber in the direction of the central outlet opening of the fuel can propagate inward.
  • the described design preferably leads to the jet of fuel emerging from the central outlet opening being constricted shortly after it leaves the outlet.
  • the feature of the inwardly open resonance chamber in this case means that in the cross section of the annular resonance chamber perpendicular to the bottom of the resonance chamber extending line, in particular line of symmetry, extends obliquely inward forward to the nozzle axis.
  • the term front here refers to the side of the outlet opening of the nozzle or the flow direction of the fuel in the central fuel channel in the direction of the central outlet opening.
  • the construction according to the invention makes it possible for the atomizing medium to pass directly from the resonance chamber to the central outlet opening, where it can interact with the fuel.
  • a reflector surface for deflecting the atomizing medium inwards to the fuel is therefore not necessary.
  • this embodiment means that the speed of the atomizing medium can be selected to be lower, because the atomizing medium is used in a more targeted manner.
  • the inventive design causes the spray angle of the fuel is greater. As a result, the flame is shorter during operation, whereby the use in small combustion chambers is possible.
  • the outer edge of the annular outlet opening and the central outlet opening lie substantially in the same plane.
  • the effect according to the invention can be further enhanced.
  • the central outlet opening is set back relative to the outer edge of the annular outlet opening. This version is particularly suitable for nozzles that have a short Flame should have. Both embodiments make it possible for the oscillation field emerging from the resonance chamber to impinge on the centrally emerging fuel directly and without obstacles or deflections.
  • the outer edge of the annular outlet opening is formed by the edge of the resonance chamber.
  • the resonance chamber is arranged particularly close to the combustion region, whereby a more efficient combustion can be achieved.
  • the resonance chamber is formed substantially rectangular in longitudinal section. Such a resonance chamber is advantageous for the generation of ultrasonic vibrations and thus for the atomization effect.
  • the resonance chamber is designed as a circumferential groove.
  • the further side wall of the resonance chamber encloses an acute angle, preferably an angle of> 45 °, in particular an angle of 60-75 °, with the nozzle axis. This ensures that the sputtering medium is guided obliquely in the direction of the nozzle axis at the exit from the resonance chamber.
  • the shape of the resulting flame can be influenced by this angle.
  • a widening, in particular conical, surface is subsequently arranged axially on the outer edge of the annular outlet opening. Perhaps Droplets that have escaped from the flame area bounce off this surface and are returned to the flame. This achieves more efficient combustion.
  • the fuel channel is bounded on the outside by a guide body and the Zerstäubüngskanal is bounded inside by the guide body.
  • the guide body is thus arranged between the fuel channel and the Zerstäubungskanal and separates these two channels.
  • the guide body is preferably formed in one piece, but may alternatively consist of several parts.
  • the sputtering channel has a deflection which is designed to lead the sputtering medium inclined by 60 ° -100 °, preferably 70 ° -85 ° to the axis via a transmission in the resonance chamber.
  • the flow of the sputtering medium is not affected too much due to the comparatively small angle of the deflection.
  • the flow behavior of the atomizing medium is improved and, in particular, a homogeneous discharge from the outlet opening is provided.
  • the deflection is formed by the guide body and partially protrudes into the resonance chamber.
  • the deflection is preferably formed integrally with the guide body.
  • the deflection is formed on a mushroom-shaped extension and the conical guide surface is arranged on the opposite side of the deflection of the mushroom-shaped extension.
  • the deflection is preferably rounded in order to improve the flow behavior.
  • the fuel channel to the central outlet opening in particular conically widened.
  • the flow velocity of the fuel in the flame region can be reduced.
  • FIG. 1 a longitudinal section of a spray nozzle according to the invention.
  • Fig. 1 1 is a fuel channel and 2 is a sputtering medium channel.
  • the fuel channel 1 is completely surrounded by the channel for atomizing medium 2.
  • a guide element 3 is arranged, which limits the fuel channel 1 on the outside and the channel for atomizing medium 2 inside.
  • the fuel channel 1 ends in a circular-shaped outlet opening 4, which is arranged within the annular outlet opening 5 of the channel for atomizing medium 2.
  • the channel for atomizing medium 2 has a resonance chamber 6, which is formed as a groove and rectangular in the longitudinal section shown. 7, the nozzle axis is designated and the arrow 8 indicates the flow direction.
  • the annular outlet opening 5 is bounded on the inside by a conical guide surface 9, which converges towards the front in the direction of the central outlet opening and whose rearward imaginary extension is inserted into the resonance chamber 6.
  • the conical guide surface 9 is arranged on a mushroom-shaped extension 10.
  • a rounded deflection 11 is arranged, which redirects the sputtering medium in the channel 2 at an angle of approximately 90 ° to the nozzle axis 7 and leads via a nozzle in the resonance chamber 6.
  • the outer edge of the annular outlet opening 5 and the central outlet opening 4 are located substantially in the same plane.
  • the outer edge of the annular outlet opening 5 is in this case formed by the front edge of the resonance chamber 6.
  • the fuel channel 1 also has a conical enlargement 13 towards the central outlet opening 4.
  • fuel or sputtering medium is directed to the exit ports 4 and 5 through the fuel channel 1 and through the sputtering medium channel 2.
  • the atomizing medium is oscillated in oscillation in the resonance chamber 6 and impinges in the region adjoining the outlet openings 4 and 5 on the fuel, which is thereby atomized.
  • the atomizing medium is conducted directly to the fuel and not via a reflector surface.
  • the spray angle of the fuel is larger and the flame therefore shorter. In addition, this reduces the atomization medium consumption.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (19)

  1. Atomiseur pour la pulvérisation de liquides, en particulier de combustible, comprenant un canal de combustible central (1) avec une ouverture de sortie centrale (4) et un canal entourant le canal de combustible (1) pour milieu de pulvérisation (2), qui présente un générateur Hartmann et une ouverture de sortie annulaire (5) entourant l'ouverture de sortie centrale (4), dans lequel le générateur Hartmann comprend une chambre de résonance annulaire (6), qui est ouverte en direction de l'axe de buse (7), dans lequel l'ouverture de sortie annulaire (5) est délimitée à l'intérieur par une surface de guidage conique (9), qui converge vers l'avant en direction de l'ouverture de sortie centrale (4), caractérisé en ce que le prolongement imaginaire s'étendant vers l'arrière de la surface de guidage conique (9) plonge dans la chambre de résonance (6).
  2. Atomiseur selon la revendication 1, caractérisé en ce que le bord extérieur de l'ouverture de sortie annulaire (5) et l'ouverture de sortie centrale (4) se trouvent sensiblement dans le même plan.
  3. Atomiseur selon la revendication 1, caractérisé en ce que l'ouverture de sortie centrale (4) est en retrait par rapport au bord extérieur de l'ouverture de sortie annulaire (5).
  4. Atomiseur selon la revendication 1, 2 ou 3, caractérisé en ce que le bord extérieur de l'ouverture de sortie annulaire (5) est formé par le bord de la chambre de résonance (6).
  5. Atomiseur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la chambre de résonance (6) est réalisée de manière sensiblement rectangulaire dans la coupe longitudinale.
  6. Atomiseur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la chambre de résonance (6) est réalisée en tant que rainure périphérique.
  7. Atomiseur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la paroi latérale située plus à l'avant de la chambre de résonance (6) forme un angle aigu, de préférence, un angle >45°, en particulier un angle de 60-75°, avec l'axe de buse (7).
  8. Atomiseur selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'une surface (12) s'élargissant, en particulier conique est agencée en se raccordant axialement au bord extérieur de l'ouverture de sortie annulaire (5).
  9. Atomiseur selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le canal de combustible (1) est délimité à l'extérieur par un corps de guidage (3) et le canal de pulvérisation (2) est délimité à l'intérieur par le corps de guidage (3).
  10. Atomiseur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le canal de pulvérisation (2) présente une déviation, qui est réalisée pour guider le milieu de pulvérisation dans la chambre de résonance (6) de façon inclinée de 60°-100°, de préférence 70°-85° par rapport à l'axe (7) par le biais d'une extrémité.
  11. Atomiseur selon la revendication 10, caractérisé en ce que la déviation est formée par le corps de guidage (3) et dépasse en partie dans la chambre de résonance (6).
  12. Atomiseur selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le canal de combustible (1) s'élargit vers l'ouverture de sortie centrale (4), en particulier de manière conique.
  13. Brûleur avec un atomiseur selon l'une quelconque des revendications 1 à 12.
  14. Utilisation d'un atomiseur selon l'une quelconque des revendications 1 à 12 pour la pulvérisation d'un liquide, en particulier d'un combustible liquide, à l'aide d'un milieu de pulvérisation, dans laquelle le combustible pulvérisé est expulsé dans l'espace de combustion d'une chambre de combustion.
  15. Utilisation selon la revendication 14, caractérisée en ce que le générateur Hartmann génère un champ vibratoire au niveau de l'ouverture de sortie annulaire (5).
  16. Utilisation selon la revendication 15, caractérisée en ce que le champ vibratoire est un champ vibratoire sonore avec une fréquence de 10 000 Hz à 20 000 Hz.
  17. Utilisation selon la revendication 15 ou 16, caractérisée en ce que le champ vibratoire provoque un étranglement du jet de combustible sortant de l'ouverture de sortie centrale (4).
  18. Utilisation selon l'une quelconque des revendications 14 à 17, caractérisée en ce que du fioul léger, du fioul lourd, du solvant, du goudron, du brai de goudron de houille, des liquides résiduels chimiques hautement caloriques, des liquides résiduels chimiques faiblement caloriques, du soufre liquide, de l'acide sulfurique résiduaire de différentes concentrations et/ou suspensions est utilisé en tant que combustible liquide.
  19. Utilisation selon l'une quelconque des revendications 14 à 18, caractérisée en ce que de la vapeur, de l'air comprimé, des gaz combustibles, de l'azote et/ou de l'oxygène est utilisé en tant que milieu de pulvérisation.
EP16450030.8A 2015-11-12 2016-11-10 Irrorateur à liquides Active EP3168533B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA722/2015A AT517929A1 (de) 2015-11-12 2015-11-12 Zerstäubungsdüse

Publications (2)

Publication Number Publication Date
EP3168533A1 EP3168533A1 (fr) 2017-05-17
EP3168533B1 true EP3168533B1 (fr) 2018-05-16

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EP16450030.8A Active EP3168533B1 (fr) 2015-11-12 2016-11-10 Irrorateur à liquides

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EP (1) EP3168533B1 (fr)
AT (1) AT517929A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102243B (zh) * 2019-03-28 2023-05-23 万荣金坦能源科技有限公司 一种液态燃料膨化裂变气液转换系统及其裂变方法
CN110105997B (zh) * 2019-03-28 2023-07-14 万荣金坦能源科技有限公司 一种液态燃料膨化裂变终端及其裂变方法
CN110105999B (zh) * 2019-03-28 2023-07-07 万荣金坦能源科技有限公司 一种可制冷的液态燃料膨化裂变器及裂变方法
CN110105996B (zh) * 2019-03-28 2023-07-11 万荣金坦能源科技有限公司 一种可制冷的液态燃料膨化裂变器及其裂变方法
CN110105998B (zh) * 2019-03-28 2023-07-14 万荣金坦能源科技有限公司 一种液态燃料膨化裂变器及其裂变方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285013B (de) * 1969-04-08 1970-10-12 Dumag Ohg Einrichtung zum Versprühen von Flüssigkeiten, insbesondere von flüssigen Brennstoffen
DE2256442A1 (de) * 1972-11-17 1974-05-22 Davy Powergas Gmbh Ultraschallzerstaeuber fuer die zerstaeubung von abfallschwefelsaeure und mit diesen ultraschallzerstaeubern ausgestattete saeurespaltoefen
DE2410847C3 (de) * 1974-03-07 1979-12-20 Davy International Ag, 6000 Frankfurt Verwendung eines Ultraschallzerstäubers für die Zerstäubung von Schwefel
AT352849B (de) * 1975-10-01 1979-10-10 Dumag Ohg Brennerduese fuer die verbrennung von oel und/oder brenngas
JPS63218273A (ja) * 1987-03-06 1988-09-12 Toa Nenryo Kogyo Kk 液体霧化装置
JPS63218274A (ja) * 1987-03-06 1988-09-12 Toa Nenryo Kogyo Kk 液体霧化装置

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Publication number Publication date
AT517929A1 (de) 2017-05-15
EP3168533A1 (fr) 2017-05-17

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