EP0099422A2 - Brûleur à pulvérisation - Google Patents

Brûleur à pulvérisation Download PDF

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Publication number
EP0099422A2
EP0099422A2 EP82108896A EP82108896A EP0099422A2 EP 0099422 A2 EP0099422 A2 EP 0099422A2 EP 82108896 A EP82108896 A EP 82108896A EP 82108896 A EP82108896 A EP 82108896A EP 0099422 A2 EP0099422 A2 EP 0099422A2
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
burner according
openings
rotor
compressed gas
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.)
Granted
Application number
EP82108896A
Other languages
German (de)
English (en)
Other versions
EP0099422B1 (fr
EP0099422A3 (en
Inventor
Uwe Dräger
Norbert Dräger
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.)
Det Drager Energie Technik GmbH and Co KG
Original Assignee
Det Drager Energie Technik GmbH and Co 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 Det Drager Energie Technik GmbH and Co KG filed Critical Det Drager Energie Technik GmbH and Co KG
Priority to AT82108896T priority Critical patent/ATE20770T1/de
Publication of EP0099422A2 publication Critical patent/EP0099422A2/fr
Publication of EP0099422A3 publication Critical patent/EP0099422A3/de
Application granted granted Critical
Publication of EP0099422B1 publication Critical patent/EP0099422B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • 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 burner for liquid fuels with a housing in which channels concentric with one another for the supply of a compressed gas and the fuel are arranged in front of a mixing chamber, and with an ultrasonic generator.
  • Atomizing burners are used, in particular, to atomize liquid fuels, even very viscous ones, in such small particles that perfect and residue-free combustion is achieved. Atomization with the aid of ultrasound has proven to be very effective because it also promotes an intensive mixture between the atomized or gaseous fuel and the reaction oxygen.
  • the ultrasound is generated by a compressed gas stream at high speed, which is deflected towards the mouth by an abutment arranged in the compressed gas mouth and thereby generates an oscillation field.
  • the effects of this vibration field are limited to the mouth area.
  • the sound energy that can be generated is also limited.
  • the object of the invention is to substantially improve the Ultraschallzerstäubungs antique at a Zerstäubun g s-burner of the above-described genus.
  • the ultrasound generator is arranged in the pressurized gas channel and consists of two inserts with through-openings for the pressurized gas and taking up the cross section of the pressurized gas channel.
  • the entire compressed gas flowing through the compressed gas channel is set into high-frequency vibrations which have a sufficiently high energy to not only improve the atomization but also without mixing through the formation of turbulence.
  • the inserts can be formed as rotating disks arranged closely next to one another, through which the compressed gas flows, each passage opening only allowing a gas flow to pass if it is aligned with the associated passage opening of the other notes.
  • the inserts are arranged as drums arranged concentrically to one another, on the respective circumference of which the through openings are arranged.
  • both inserts i.e. disks or drums
  • both inserts i.e. disks or drums
  • one insert is a stator and the other is a rotor. Then an external drive can be connected to the rotor, with which the speed of the rotor and thus the sound frequency generated can be controlled.
  • the rotor is driven by the pressurized gas flow and for this purpose has nozzle-like through openings or a blading acted upon by the pressurized gas flow.
  • a side facing the mixing chamber is located coaxially to the rotor on its side facing away from the mixing chamber
  • a reflector is arranged, which reflects the sound energy and bundles it in the direction of the mixing chamber, so that sufficient sound energy is also available in the area of the mixing chamber.
  • a further reflector can be arranged at the end of the mixing chamber, which also reflects and bundles the incident sound energy, for example onto the region of the mouth of the channel leading to the fuel.
  • the reflectors can also be designed and adjusted such that they apply sound energy to certain areas of the atomizing burner and thereby contribute, for example, to the cleaning of heating surfaces by ultrasound. This is preferably done with parabolic reflectors.
  • the pressurized gas between the ultrasonic generator and the mixing chamber has to cover longer distances, in addition in the area of the mixing chamber may be arranged, which in turn are excited by the incident sound vibrations to natural oscillations annular H elmholtz resonators.
  • the housing part delimiting the mixing chamber should be adjustable in the direction of the concentric channels, as a result of which the exit cone of the atomized or atomizing fuels and so that the flame length can be influenced.
  • the shape of the flame can also be adjusted by adjusting the oscillation frequency, ie by changing the speed of the rotor and / or different design of the through openings in the inserts vary.
  • the through openings can be designed as slots, as bores or openings with other cross sections in different divisions.
  • the atomization burner shown in FIGS. 1 and 2 has an essentially cylindrical housing 1, into which a tube 2 with fuel channels 3, 4 concentric with one another is introduced radially.
  • the pipe 2 merges with a bend 5 into a section 6 which is concentric with the housing 1 and opens into the region of a mixing chamber 7.
  • the annular space between the housing 1 and the tube 2 is a compressed gas channel 8 which extends between the mixing chamber 7 and an ultrasound generator 9 arranged at the other end of the housing 1.
  • the ultrasonic generator 9 has a housing section 10 with an enlarged diameter, into which a connecting piece 11 for the supply of compressed gas opens tangentially.
  • the wall of the housing section 10 has a plurality of through openings 12 which, as shown, extend in the direction of the connecting piece 11.
  • the housing section 10 there is a drum-like rotor 13, the outside diameter of which is only slightly smaller than the inside diameter of the housing section 10.
  • the through openings 12, 14 are designed as slots which extend in the longitudinal direction of the housing axis.
  • the rotor 13 is mounted at the end of the housing and connected to an electric motor 15 which is flanged to the housing 1 at the end.
  • the electric motor 15 drives the rotor 13.
  • the pressurized gas brought through the connecting piece 11 can only pass through the through openings 12, 14 if corresponding through openings are aligned with one another.
  • the rotor 13 in the housing section 10 thus acts as an ultrasound generator, the vibration energy of which is transmitted to the mixing chamber 7 via the compressed gas channel 8.
  • a parabolic reflector 16 is arranged, which is indicated in Fig. 1 with dashed lines. This reflector collects the sound energy and emits it in the direction of the mixing chamber 7.
  • the mixing chamber 7 is in turn delimited by a reflector 17, which also has a parabolic shape, but is set in such a way that the acoustic vibration energy absorbed by this reflector 17 is concentrated in the mouth region of the fuel channels 3, 4.
  • the mixing chamber 7 is delimited on the outside by a housing part 18 which carries the reflector 17 and is also adjustable in the axial direction of the housing 1. By adjusting the housing part 18, the flame that forms before the mouth of the fuel channels 3, 4 can be influenced.
  • a plurality of series-connected Helmholtz resonators are arranged on the inner circumference of the housing part 18, which resonators are excited by the incident sound energy and in turn emit sound energy.
  • the sound energy generated in the ultrasound generator 9 and transmitted into the mixing chamber 7 ensures very fine atomization of the liquid fuels supplied. It also ensures intensive mixing of the compressed gas by creating turbulence the atomized fuel. If the burner is additionally operated with gaseous fuels or only with gaseous fuels, the acoustic energy ensures that these fuels are mixed intensively with the compressed gas.
  • the same reference numerals designate the same parts.
  • the two disks 20, 21 are rotatably mounted close to each other.
  • the two disks 20, 21 have mutually assigned through openings 12 14, which, as shown in FIG. 4, can be designed as slots or as circular through openings and also as through openings of any cross section.
  • the two disks 20, 21 rotate in opposite directions, because each disk 20 or 21 has an upstream or downstream blading which lies in the compressed gas stream, which accordingly drives the disks 20, 21 in opposite directions.
  • the oppositely rotating disks 20, 21 also act as ultrasound generators, the vibrational energy of which reaches the mixing chamber 7 via the compressed gas channel 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Special Spraying Apparatus (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP82108896A 1982-07-22 1982-09-25 Brûleur à pulvérisation Expired EP0099422B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82108896T ATE20770T1 (de) 1982-07-22 1982-09-25 Zerstaeubungsbrenner.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828220892U DE8220892U1 (de) 1982-07-22 1982-07-22 Zerstaeubungsbrenner
DE8220892U 1982-07-22

Publications (3)

Publication Number Publication Date
EP0099422A2 true EP0099422A2 (fr) 1984-02-01
EP0099422A3 EP0099422A3 (en) 1984-05-02
EP0099422B1 EP0099422B1 (fr) 1986-07-16

Family

ID=6742120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108896A Expired EP0099422B1 (fr) 1982-07-22 1982-09-25 Brûleur à pulvérisation

Country Status (3)

Country Link
EP (1) EP0099422B1 (fr)
AT (1) ATE20770T1 (fr)
DE (2) DE8220892U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102243A (zh) * 2019-03-28 2019-08-09 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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715384A (en) * 1953-04-13 1955-08-16 Carl L Meng Ultrasonic device
US2730067A (en) * 1952-03-22 1956-01-10 Siemens Ag Apparatus for generating sonic or supersonic mechanical oscillations
CH348834A (fr) * 1955-12-16 1960-09-15 Maurice Blanchard Jean Dispositif générateur de vibrations, notamment de vibrations sonores et ultrasonores
US3123302A (en) * 1964-03-03 Pressurized
GB964421A (en) * 1959-10-30 1964-07-22 Peter Willems Method and apparatus for producing oscillations in gaseous or liquid media
US3182710A (en) * 1963-01-07 1965-05-11 Wadsworth W Mount Turbine driven supersonic industrial oil burner
DE1551648A1 (de) * 1966-01-19 1970-06-18 Dumag Ohg Zerstaeubungsbrenner
DE2554483A1 (de) * 1975-10-01 1977-04-21 Dumag Ohg Brennerduese fuer verbrennung von oel und bzw. oder brenngas mit einem durch druckgas betriebenen hartmann'schen schall- oder ultraschallschwingungsgenerator
FR2498481A1 (fr) * 1981-01-26 1982-07-30 Inst Atomnogo Energet Procede et dispositif de pulverisation de liquides dans un fluide gazeux

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123302A (en) * 1964-03-03 Pressurized
US2730067A (en) * 1952-03-22 1956-01-10 Siemens Ag Apparatus for generating sonic or supersonic mechanical oscillations
US2715384A (en) * 1953-04-13 1955-08-16 Carl L Meng Ultrasonic device
CH348834A (fr) * 1955-12-16 1960-09-15 Maurice Blanchard Jean Dispositif générateur de vibrations, notamment de vibrations sonores et ultrasonores
GB964421A (en) * 1959-10-30 1964-07-22 Peter Willems Method and apparatus for producing oscillations in gaseous or liquid media
US3182710A (en) * 1963-01-07 1965-05-11 Wadsworth W Mount Turbine driven supersonic industrial oil burner
DE1551648A1 (de) * 1966-01-19 1970-06-18 Dumag Ohg Zerstaeubungsbrenner
DE2554483A1 (de) * 1975-10-01 1977-04-21 Dumag Ohg Brennerduese fuer verbrennung von oel und bzw. oder brenngas mit einem durch druckgas betriebenen hartmann'schen schall- oder ultraschallschwingungsgenerator
AT352849B (de) * 1975-10-01 1979-10-10 Dumag Ohg Brennerduese fuer die verbrennung von oel und/oder brenngas
FR2498481A1 (fr) * 1981-01-26 1982-07-30 Inst Atomnogo Energet Procede et dispositif de pulverisation de liquides dans un fluide gazeux

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102243A (zh) * 2019-03-28 2019-08-09 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
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

Also Published As

Publication number Publication date
EP0099422B1 (fr) 1986-07-16
ATE20770T1 (de) 1986-08-15
DE8220892U1 (de) 1982-10-21
EP0099422A3 (en) 1984-05-02
DE3272025D1 (en) 1986-08-21

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