EP0051767B1 - Dispositif pour la pulvérisation de liquides - Google Patents

Dispositif pour la pulvérisation de liquides Download PDF

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Publication number
EP0051767B1
EP0051767B1 EP81108641A EP81108641A EP0051767B1 EP 0051767 B1 EP0051767 B1 EP 0051767B1 EP 81108641 A EP81108641 A EP 81108641A EP 81108641 A EP81108641 A EP 81108641A EP 0051767 B1 EP0051767 B1 EP 0051767B1
Authority
EP
European Patent Office
Prior art keywords
aerosol
atomizer
stream
liquid
ultrasonic
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.)
Expired
Application number
EP81108641A
Other languages
German (de)
English (en)
Other versions
EP0051767A1 (fr
Inventor
Wolf-Dietrich Dr. Drews
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT81108641T priority Critical patent/ATE13822T1/de
Publication of EP0051767A1 publication Critical patent/EP0051767A1/fr
Application granted granted Critical
Publication of EP0051767B1 publication Critical patent/EP0051767B1/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
    • B05B17/0607—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 generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0623—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 generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
    • B05B17/063—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 generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material

Definitions

  • the invention relates to a device for atomizing liquids using a position-independent, pressure-independent ultrasonic liquid atomizer installed in an outer housing and surrounded by air on all sides.
  • the rough regulation of the atomizer output is usually achieved by using several identical or different pressure nozzles. This principle is used for example in motor vehicle carburettors. Fine adjustment is possible in only very limited areas by varying the atomizing pressures. Conventional mechanical atomizers do not allow regulation of the droplet transport speed. In the case of electromechanical atomizers, fine adjustments can be made by changing the excitation voltage and clocking the excitation, but the required control conditions are not possible.
  • rotary atomizers create droplet-air mixtures (aerosols) at high pressures, which then lead to the paper being wetted by precipitation. Due to the high inhomogeneity and the high kinetic energies of these aerosols (projectile effect), only uneven layers can be applied with this process.
  • a piezoelectric oscillating system that acts as an atomizer and is surrounded by air on all sides is installed in a housing.
  • this object is achieved in that a shutter is provided in the housing for the continuous control and focusing of the aerosol flow moved by the air flow, and for fine regulation of the aerosol flow generated and present by means of the ultrasonic atomizer in an aerosol store.
  • a device for atomizing liquids With a device for atomizing liquids according to the invention, extremely high control ratios, for example 1 20, can be achieved even at constant operating voltages and atomizing powers.
  • the aerosol flows generated by the atomizer in the aerosol storage device can be continuously regulated with regard to atomizing performance and transport speed of the air flow, and can be focused with a streamlined arrangement of the aperture opening. Due to the unpressurized ultrasonic atomization, in contrast to the pressure nozzle atomization, no overpressures occur in the aerosol reservoir, so that even the smallest amounts of liquid can be produced with the finest droplets and dispensed in a predetermined direction with a finely adjustable transport speed.
  • the transporting air flow can be directed perpendicular to the droplet generation or, with simultaneous flow around the transducer, parallel to the droplet generation.
  • the speed of the air flow can be adapted to the opening of the panel by electrical speed control of the fan.
  • the droplets deposited in the storage space are collected in the reservoir and fed back to the atomizer via pumps of an external liquid container or directly.
  • the interior of the aerosol store through which aerosol flows is additionally provided with partition walls, on which larger droplets are filtered out by precipitation - parallel to the selection effect of the gravitational force.
  • Ultrasonic liquid atomizers according to DE-A-2 032 433 and DE-A-2 308 584 have proven to be particularly suitable.
  • the combination according to the invention of such pressure-free ultrasonic liquid atomizers with an aerosol reservoir enables the production of very small quantities of aerosols, such aerosols being able to be dispensed in any direction at any adjustable transport speeds.
  • the finest continuous regulation of the aerosol quantity and density is possible.
  • any liquid can be atomized, such as. As water, emulsions, medical liquids, developer liquids, heating oil and gasoline.
  • the quantities of liquid atomized and the droplet diameter generated in the aerosol storage device must be adapted to the application by varying the excitation voltage, pulsing the excitation and metering the atomizing power.
  • FIG. 1 It shows a side view of an embodiment of a liquid atomizer according to the Invention.
  • An air stream 1 is brought to the plate 11 of the atomizer 3 with the aid of a blower 2.
  • the liquid located in a reservoir 6 is sucked in by means of a pump 5 and passed into the liquid atomizer 3 via a liquid supply line 7.
  • an aerosol stream 9 is formed in contact with the air stream 1 in the aerosol store 4. This can be finely regulated and focused by an aperture 10 and directed in the desired direction onto the object 12 to be coated.
  • the interior of aerosol reservoir 4 through which aerosol flows can additionally be provided with intermediate walls 13. This results in an even better selection of the droplets.

Landscapes

  • Special Spraying Apparatus (AREA)
  • Nozzles (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Catching Or Destruction (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Claims (2)

1. Dispositif pour pulvériser des liquides en utilisant un pulvérisateur de liquide (8) à ultrasons, monté dans une enveloppe extrérieure, fonctionnant sans pression et indépendamment de sa position et léché de tous les côtés par de l'air, caractérisé en ce qu'il est prévu dans l'enveloppe, pour le réglage en continu et pour la foca- lisation du courant d'aérosol (9) déplacé par le courant d'air (1), un ventilateur (2) dont le nombre de tours est réglé et, pour le réglage fin du courant d'aérosol (9) disponible et produit dans un réservoir d'aérosol (4) au moyen du pulvérisateur à ultrasons (3), un obturateur (10).
2. Pulvérisateur de liquide suivant la revendication 1, caractérisé en ce que l'intérieur du réservoir d'aérosol (4) présente des cloisons intermédiaires (13).
EP81108641A 1980-11-10 1981-10-21 Dispositif pour la pulvérisation de liquides Expired EP0051767B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108641T ATE13822T1 (de) 1980-11-10 1981-10-21 Vorrichtung zum zerstaeuben von fluessigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803042375 DE3042375A1 (de) 1980-11-10 1980-11-10 Vorrichtung zum zerstaeuben von fluessigkeiten
DE3042375 1980-11-10

Publications (2)

Publication Number Publication Date
EP0051767A1 EP0051767A1 (fr) 1982-05-19
EP0051767B1 true EP0051767B1 (fr) 1985-06-19

Family

ID=6116409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108641A Expired EP0051767B1 (fr) 1980-11-10 1981-10-21 Dispositif pour la pulvérisation de liquides

Country Status (9)

Country Link
EP (1) EP0051767B1 (fr)
JP (1) JPS57110357A (fr)
AT (1) ATE13822T1 (fr)
DE (2) DE3042375A1 (fr)
DK (1) DK150096C (fr)
ES (1) ES8300027A1 (fr)
GR (1) GR81316B (fr)
NO (1) NO154420C (fr)
PT (1) PT73937B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0280303A (ja) * 1987-06-04 1990-03-20 Tonen Corp 超伝導体薄膜の形成方法及びその為の装置
CN1086158C (zh) * 1999-08-30 2002-06-12 上海交通大学 透明导电薄膜和减反射薄膜喷涂装置及其方法
JP2002096004A (ja) * 2000-09-21 2002-04-02 Inoue Kinzoku Kogyo Co Ltd 塗工装置
DE102013004543B4 (de) * 2013-03-15 2020-06-18 Al-Ko Therm Gmbh Ultraschall-Vernebelungsvorrichtung
CN103933692B (zh) * 2014-04-20 2017-05-10 郑州大学 一种智能超声雾化灭火器
AT523636B1 (de) * 2020-08-17 2021-10-15 Ess Holding Gmbh Zerstäubungsvorrichtung für ein Beschichtungsmittel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235976A (en) * 1963-12-23 1966-02-22 Jay M Goltz Educational apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965120C (de) * 1953-12-05 1957-05-29 Siemens Ag Einrichtung zum Zerstaeuben von Fluessigkeiten
US3325976A (en) * 1966-04-26 1967-06-20 Beckman Instruments Inc Sample atomizer
DE2239950C3 (de) * 1972-08-14 1979-05-23 Siemens Ag, 1000 Berlin Und 8000 Muenchen Handgerät zur Flüssigkeitszerstäubung
DE2445791C2 (de) * 1974-09-25 1984-04-19 Siemens AG, 1000 Berlin und 8000 München Ultraschall-Flüssigkeitszerstäuber
DE2820951C3 (de) * 1978-05-12 1980-11-06 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Flüssigkeitszerstäuber
JPS5687457A (en) * 1979-12-14 1981-07-16 Matsushita Electric Ind Co Ltd Liquid coater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235976A (en) * 1963-12-23 1966-02-22 Jay M Goltz Educational apparatus

Also Published As

Publication number Publication date
DK150096C (da) 1987-06-15
DE3171052D1 (en) 1985-07-25
NO154420C (no) 1986-09-17
ATE13822T1 (de) 1985-07-15
PT73937A (de) 1981-12-01
DE3042375A1 (de) 1982-06-09
DK150096B (da) 1986-12-08
DK492481A (da) 1982-05-11
NO154420B (no) 1986-06-09
GR81316B (fr) 1984-12-11
PT73937B (de) 1983-02-18
EP0051767A1 (fr) 1982-05-19
ES506982A0 (es) 1982-10-01
ES8300027A1 (es) 1982-10-01
JPH0116549B2 (fr) 1989-03-24
JPS57110357A (en) 1982-07-09
NO813763L (no) 1982-05-11

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