US3392916A - Ultrasonic atomizer - Google Patents

Ultrasonic atomizer Download PDF

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US3392916A
US3392916A US596175A US59617566A US3392916A US 3392916 A US3392916 A US 3392916A US 596175 A US596175 A US 596175A US 59617566 A US59617566 A US 59617566A US 3392916 A US3392916 A US 3392916A
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liquid
ultrasonic atomizer
vibrating
vibrating surface
tube
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US596175A
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Engstrom Carl-Gunnar Daniel
Herzog Paul
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CARL GUNNAR DANIEL ENGSTROM
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Carl Gunnar Daniel Engstrom
Herzog Paul
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/18—Vaporising devices for anaesthetic preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0085—Inhalators using ultrasonics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/147—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase the respiratory gas not passing through the liquid container
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/48—Sonic vibrators

Definitions

  • the present invention relates to an ultrasonic atomizer for atomizing liquids and forming an aerosol.
  • the atomization of liquids by means of an ultrasonic vibrator is associated with several problems. Among the most important of these are the damping effect when supplying excess of liquid to the vibrating body, the difiiculty of controlling the amount of liquid atomized per unit of time and the problem of insulating the current supply lead in those cases, where the vibrating body is wholly or partly surrounded by liquid. These problems have not been acceptably solved in known ultrasonic atomizers, in view of which the atomizers have not gained a desired broad application.
  • the present invention aims at solving said problems, whereby an ultrasonic atomizer is obtained which in view of its reliability and simple design has a many-facetted use.
  • the ultrasonic atomizer according to the invention for atomizing liquids and forming an aerosol comprises an atomizing chamber having a gas inlet and a gas outlet, and a vibrating body arranged in the atomizing chamber and having a vibrating surface, which is adapted to receive liquid for atomization from liquid supply means, the vibrating surface being arranged inclined, preferably essentially vertically, and the liquid supply means being so arranged relative to the vibrating surface, that the liquid in the supply means is in continuous liquid contact with the liquid atomized at the vibrating surface.
  • the liquid supply means may comprise a liquid supply tube opening adjacent to the vibrating surface and the mouth of which is bevelled so as to be essentially parallel with the vibration surface and possible engages same with its outmost tip, the liquid supply tube suitably being elastically suspended.
  • the liquid supply means comprises a device, for instance a displacement pump, giving a controllable constant flow of liquid to the vibrating surface.
  • FIG. 1 shows, partly in section, an embodiment of the ultrasonic atomizer according to the invention
  • FIG. 2 shows, on an enlarged scale, a detail of the ultrasonic atomizer of FIG. 1.
  • the ultrasonic atomizer shown in FIG. 1 comprises a container, generally designated 1, having side walls 3, one end wall 5 integral therewith and one removable end wall 7 attached to the side walls 3 by means of screws 9.
  • a gasket 11 is clamped between the removable end wall 7 and the side walls 3 of the container.
  • the container has a gas inlet 13 arranged in the end wall 5 and a gas outlet 15 centrally positioned in the removable end wall. 7.
  • a drain tube 17 having a shut-01f cock 19 is provided in the lower part of the container 1 .
  • An ultrasonic vibrator 21 is arranged in the removable end wall 7 and extends inwardly into the container 1 and ends in a vertical vibrating surface 23, the vibrator being supplied with high frequency current through a coaxial cable 25.
  • the liquid to be atomized is stored in a bottle 27, which is suspended in a bracket 29 upside down.
  • the bottle can be an ordinary hospital drop flask, used for instance when giving blood transfusions.
  • the bottle 27 is sealed by means of a plug 30 penetrated by a liquid discharge tube 31 and an air inlet tube 33 extending above the free surface of the liquid in the bottle.
  • a flexible hose 35 provided with a hose clamp 37 is connected to the tube 31.
  • the hose 35 leads to the inlet of a pump P, the outlet of which is connected to a liquid supply tube 39.
  • This tube 39 is received in an aperture in the upper side of the container 1, the tube being arranged in a plug 41, for instance made of rubber.
  • the mouth 43 of the liquid supply tube 39 is bevelled so as to be adapted to the vibrating surface 23, adjacent to which it opens.
  • the inclination oz of the tube 39 relative to the vertical plane coinciding with the vibrating surface 23 should be small as possible and suitably less than 30.
  • FIG. 2 shows, on an enlarged scale, a section through the pump P.
  • the pump is a so-called displacement pump and consists of a pump housing 51 having an inlet 53 and an outlet 55, and pump elements 57, 59, having opposite rotational directions.
  • a continuous flow of carrier gas is supplied to the container 1 through the gas inlet 13, the gas outlet 15 being connected to a device to which an aerosol is to be supplied, for instance a respirator, an oil burner or the like.
  • a device to which an aerosol is to be supplied for instance a respirator, an oil burner or the like.
  • the ultrasonic vibrator 21 and the pump P is started after opening the hose clamp 37.
  • the pump speed is adjusted to provide a suitable liquid flow and a predetermined amount of liquid per unit of time is now supplied to the vibrating surface 23, where it is successively atomized when leaving the mouth 43 of the tube 39, and the atomized liquid is then carried by the carrier gas out through the outlet 15.
  • the present invention thus provides an ultrasonic atomizer which, in view of its ability to generate an aerosol having a well defined composition, has a multifarious use. It may for instance be used in respirators for the supply of moisture, anaesthetica, etc., in flame spectrometry for the generation of an aerosol containing the element to be analyzed for the supply of fuels in diesel engines, oil burners, jet motors, etc.
  • the pump P may be removed, the supply of liquid being controlled by changing the height of the flask 27 or contracting the hose clamp 37.
  • the pump P can be of any type but is preferably a displacement pump giving a continuous flow of liquid.
  • the pump can be supplied with liquid from a iquid container of any design and can be supplied with iquid under pressure or operate with self-suction.
  • the vibrating surface is positioned Iertically. The important thing is that said surface has [11 inclination which gives an efiicient runoff from the Iibrating body so as to prevent damping of the vibrations )f said body.
  • the angle between the vibrating :urface and the vertical should be less than 45".
  • Ultrasonic atomizer for atomizing liquids and formng an aerosol, comprising an atomizing chamber having t gas inlet and a gas outlet, and a vibrating body arranged n the atomizing chamber and having a vibrating surace, which is adapted to receive liquid for atomization rom liquid supply means, in which the vibrating surface 5 arranged inclined, preferably essentially vertically, and he liquid supply means are so arranged relative to the 'ibrating surface, that the liquid in the supply means s in continuous liquid contact with the liquid atomized .t the vibrating surface.
  • Ultrasonic atomizer according to claim 1, in which he liquid supply means comprises a liquid supply tube 4 opening adjacent to the vibrating surface and the mouth of which is bevelled so as to be essentially parallel with the vibration surface and possibly engages same with its outmost tip, the liquid supply tube suitably being elastically suspended.
  • Ultrasonic atomizer according to claim 1 or 2 in which the liquid supply means comprises a device, for instance a displacement pump, giving a controllable constant flow of liquid to the vibrating surface.
  • Ultrasonic atomizer according to any of the preceding claims, in which a liquid drain means is positioned in the lower part of the atomizing chamber.

Description

y 16, 1968 CARL-GUNNAR D. ENGSTR'O'M ETAL 3,392,916
ULTRASONI C AT OMI ZER Filed Nov. 22, 1966 Fig.1
I NVENTOR 1 w m 1U R S Fm W vi M z ar e H DL TU a P W a f I: m m C 3,392,916 ULTRASONIC ATOMIZER Carl-Gunnar Daniel Engstriim, Aluddsvagen 3, Stockholm, Sweden, and Paul Herzog, Nybodagatan 7, Solna, Sweden Filed Nov. 22, 1966, Ser. No. 596,175 Claims priority, application Sweden, Dec. 8, 1965, 15,903/ 65 4 Claims. (Cl. 239102) ABSTRACT OF THE DISCLOSURE An ultrasonic atomizer to form aerosols having a chamber through which a current of gas flows and in which an ultrasonic vibrator is located. The liquid to be atomized is fed to the vibrating face of the vibrator.
The present invention relates to an ultrasonic atomizer for atomizing liquids and forming an aerosol.
The atomization of liquids by means of an ultrasonic vibrator is associated with several problems. Among the most important of these are the damping effect when supplying excess of liquid to the vibrating body, the difiiculty of controlling the amount of liquid atomized per unit of time and the problem of insulating the current supply lead in those cases, where the vibrating body is wholly or partly surrounded by liquid. These problems have not been acceptably solved in known ultrasonic atomizers, in view of which the atomizers have not gained a desired broad application.
The present invention aims at solving said problems, whereby an ultrasonic atomizer is obtained which in view of its reliability and simple design has a many-facetted use.
The ultrasonic atomizer according to the invention for atomizing liquids and forming an aerosol comprises an atomizing chamber having a gas inlet and a gas outlet, and a vibrating body arranged in the atomizing chamber and having a vibrating surface, which is adapted to receive liquid for atomization from liquid supply means, the vibrating surface being arranged inclined, preferably essentially vertically, and the liquid supply means being so arranged relative to the vibrating surface, that the liquid in the supply means is in continuous liquid contact with the liquid atomized at the vibrating surface. The liquid supply means may comprise a liquid supply tube opening adjacent to the vibrating surface and the mouth of which is bevelled so as to be essentially parallel with the vibration surface and possible engages same with its outmost tip, the liquid supply tube suitably being elastically suspended.
In a particular embodiment of the invention the liquid supply means comprises a device, for instance a displacement pump, giving a controllable constant flow of liquid to the vibrating surface.
The invention will now be described by an example with reference to the appended drawing, wherein FIG. 1 shows, partly in section, an embodiment of the ultrasonic atomizer according to the invention, and FIG. 2 shows, on an enlarged scale, a detail of the ultrasonic atomizer of FIG. 1.
The ultrasonic atomizer shown in FIG. 1 comprises a container, generally designated 1, having side walls 3, one end wall 5 integral therewith and one removable end wall 7 attached to the side walls 3 by means of screws 9. In order to obtain sealing a gasket 11 is clamped between the removable end wall 7 and the side walls 3 of the container. The container has a gas inlet 13 arranged in the end wall 5 and a gas outlet 15 centrally positioned in the removable end wall. 7. In the lower part of the container 1 a drain tube 17 having a shut-01f cock 19 is provided.
nited States Patent 0 3,392,916 Patented July 16, 1968 An ultrasonic vibrator 21 is arranged in the removable end wall 7 and extends inwardly into the container 1 and ends in a vertical vibrating surface 23, the vibrator being supplied with high frequency current through a coaxial cable 25.
The liquid to be atomized is stored in a bottle 27, which is suspended in a bracket 29 upside down. The bottle can be an ordinary hospital drop flask, used for instance when giving blood transfusions. The bottle 27 is sealed by means of a plug 30 penetrated by a liquid discharge tube 31 and an air inlet tube 33 extending above the free surface of the liquid in the bottle. A flexible hose 35 provided with a hose clamp 37 is connected to the tube 31. The hose 35 leads to the inlet of a pump P, the outlet of which is connected to a liquid supply tube 39. This tube 39 is received in an aperture in the upper side of the container 1, the tube being arranged in a plug 41, for instance made of rubber. The mouth 43 of the liquid supply tube 39 is bevelled so as to be adapted to the vibrating surface 23, adjacent to which it opens. The inclination oz of the tube 39 relative to the vertical plane coinciding with the vibrating surface 23 should be small as possible and suitably less than 30.
FIG. 2 shows, on an enlarged scale, a section through the pump P. The pump is a so-called displacement pump and consists of a pump housing 51 having an inlet 53 and an outlet 55, and pump elements 57, 59, having opposite rotational directions.
Briefly, the function of the apparatus is the following:
A continuous flow of carrier gas is supplied to the container 1 through the gas inlet 13, the gas outlet 15 being connected to a device to which an aerosol is to be supplied, for instance a respirator, an oil burner or the like. When the flow of carrier gas has been adjusted to a suitable value the ultrasonic vibrator 21 and the pump P is started after opening the hose clamp 37. The pump speed is adjusted to provide a suitable liquid flow and a predetermined amount of liquid per unit of time is now supplied to the vibrating surface 23, where it is successively atomized when leaving the mouth 43 of the tube 39, and the atomized liquid is then carried by the carrier gas out through the outlet 15.
By using the arrangement suggested several advantages are gained. By means of the displacement pump an ac curate supply of liquid is provided. In view of the vertical arrangement of the vibrating surface there is no risk of damping the vibrations of the vibrating body when supplying excess of liquid, as non-atomized liquid immediately flows off from the vibrating surface, the efficiency of the ultrasonic vibrator thus being unchanged. The liquid flown off from the vibrating surface can be discharged from the container 1 through the tube 17 at regular intervals by opening the cock 19. Thanks to the fact that the ultrasonic vibrator does not come into contact with the liquid, except, of course, at the vibrating surface, the insulating problem at the point of connection of the current supply cable is essentially facilitated.
The present invention thus provides an ultrasonic atomizer which, in view of its ability to generate an aerosol having a well defined composition, has a multifarious use. It may for instance be used in respirators for the supply of moisture, anaesthetica, etc., in flame spectrometry for the generation of an aerosol containing the element to be analyzed for the supply of fuels in diesel engines, oil burners, jet motors, etc.
The invention is, of course, not limited to the embodiment shown in the drawing. Thus, the pump P may be removed, the supply of liquid being controlled by changing the height of the flask 27 or contracting the hose clamp 37. The pump P can be of any type but is preferably a displacement pump giving a continuous flow of liquid. The pump can be supplied with liquid from a iquid container of any design and can be supplied with iquid under pressure or operate with self-suction. Nor s it necessary that the vibrating surface is positioned Iertically. The important thing is that said surface has [11 inclination which gives an efiicient runoff from the Iibrating body so as to prevent damping of the vibrations )f said body. Generally, the angle between the vibrating :urface and the vertical should be less than 45".
What is claimed is:
1. Ultrasonic atomizer for atomizing liquids and formng an aerosol, comprising an atomizing chamber having t gas inlet and a gas outlet, and a vibrating body arranged n the atomizing chamber and having a vibrating surace, which is adapted to receive liquid for atomization rom liquid supply means, in which the vibrating surface 5 arranged inclined, preferably essentially vertically, and he liquid supply means are so arranged relative to the 'ibrating surface, that the liquid in the supply means s in continuous liquid contact with the liquid atomized .t the vibrating surface.
2. Ultrasonic atomizer according to claim 1, in which he liquid supply means comprises a liquid supply tube 4 opening adjacent to the vibrating surface and the mouth of which is bevelled so as to be essentially parallel with the vibration surface and possibly engages same with its outmost tip, the liquid supply tube suitably being elastically suspended.
3. Ultrasonic atomizer according to claim 1 or 2, in which the liquid supply means comprises a device, for instance a displacement pump, giving a controllable constant flow of liquid to the vibrating surface.
4. Ultrasonic atomizer according to any of the preceding claims, in which a liquid drain means is positioned in the lower part of the atomizing chamber.
References Cited UNITED STATES PATENTS 1,939,302 12/1933 Heaney 239-102 3,038,532 6/1962 Eisenkraft 1594 3,200,873 8/1965 Young et al. 158-77 3,214,101 10/1965 Perron 239-102 EVERETT W. KIRBY, Primary Examiner.
US596175A 1965-12-08 1966-11-22 Ultrasonic atomizer Expired - Lifetime US3392916A (en)

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Cited By (44)

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US3648929A (en) * 1971-02-08 1972-03-14 Battelle Memorial Institute Atomizer
US3700170A (en) * 1970-11-18 1972-10-24 Ceskoslovenska Akademie Ved Generator of monodisperse aerosols
US3804329A (en) * 1973-07-27 1974-04-16 J Martner Ultrasonic generator and atomizer apparatus and method
US3860173A (en) * 1970-02-03 1975-01-14 Naoyasu Sata Non-polluting combustion engine having ultrasonic fuel atomizer in place of carburetor
US4038348A (en) * 1973-03-26 1977-07-26 Kompanek Harry W Ultrasonic system for improved combustion, emission control and fuel economy on internal combustion engines
US4085893A (en) * 1974-03-20 1978-04-25 Durley Iii Benton A Ultrasonic humidifiers, atomizers and the like
US4109863A (en) * 1977-08-17 1978-08-29 The United States Of America As Represented By The United States Department Of Energy Apparatus for ultrasonic nebulization
US4301093A (en) * 1978-03-15 1981-11-17 Bosch Siemens Hausgerate Gmbh Atomizer for liquid
US4582654A (en) * 1984-09-12 1986-04-15 Varian Associates, Inc. Nebulizer particularly adapted for analytical purposes
US5011632A (en) * 1989-02-07 1991-04-30 Shimizu Construction Co., Ltd. Ultrasonic fragrance generation apparatus
US5030253A (en) * 1988-05-31 1991-07-09 Shimizu Construction Co., Ltd. Fragrant air supplying method and supplying system
US5071621A (en) * 1988-01-20 1991-12-10 Shimizu Construction Co. Ltd. Method of supplying scents to a room of a motor vehicle
US5443059A (en) * 1993-01-15 1995-08-22 Dragerwerk Ag Ultrasonic atomizer with a metering unit
US5950619A (en) * 1995-03-14 1999-09-14 Siemens Aktiengesellschaft Ultrasonic atomizer device with removable precision dosating unit
US5970974A (en) * 1995-03-14 1999-10-26 Siemens Aktiengesellschaft Dosating unit for an ultrasonic atomizer device
US20020103448A1 (en) * 2001-01-30 2002-08-01 Eilaz Babaev Ultrasound wound treatment method and device using standing waves
US6478754B1 (en) 2001-04-23 2002-11-12 Advanced Medical Applications, Inc. Ultrasonic method and device for wound treatment
US6533803B2 (en) 2000-12-22 2003-03-18 Advanced Medical Applications, Inc. Wound treatment method and device with combination of ultrasound and laser energy
US6601581B1 (en) 2000-11-01 2003-08-05 Advanced Medical Applications, Inc. Method and device for ultrasound drug delivery
US6623444B2 (en) 2001-03-21 2003-09-23 Advanced Medical Applications, Inc. Ultrasonic catheter drug delivery method and device
US20030226633A1 (en) * 2002-06-11 2003-12-11 Fujitsu Limited Method and apparatus for fabricating bonded substrate
US20030236560A1 (en) * 2001-01-12 2003-12-25 Eilaz Babaev Ultrasonic method and device for wound treatment
US6761729B2 (en) 2000-12-22 2004-07-13 Advanced Medicalapplications, Inc. Wound treatment method and device with combination of ultrasound and laser energy
US20050016380A1 (en) * 2003-07-25 2005-01-27 Kazuo Matsuura Ultrasonic solution separator
US20050241484A1 (en) * 2002-06-26 2005-11-03 Hinds Glenn W Ii Air filtration system
US6964647B1 (en) 2000-10-06 2005-11-15 Ellaz Babaev Nozzle for ultrasound wound treatment
US20060032935A1 (en) * 2004-08-11 2006-02-16 Kazuo Matsuura Method and apparatus for separating a liquid
US20060227612A1 (en) * 2003-10-08 2006-10-12 Ebrahim Abedifard Common wordline flash array architecture
US20070088245A1 (en) * 2005-06-23 2007-04-19 Celleration, Inc. Removable applicator nozzle for ultrasound wound therapy device
US20070295595A1 (en) * 2004-12-29 2007-12-27 Kazuo Matsuura Ultrasonic Solution Separating Method and Ultrasonic Separating Apparatus Used in This Method
US20080051693A1 (en) * 2006-08-25 2008-02-28 Bacoustics Llc Portable Ultrasound Device for the Treatment of Wounds
US20080177221A1 (en) * 2006-12-22 2008-07-24 Celleration, Inc. Apparatus to prevent applicator re-use
US20080183109A1 (en) * 2006-06-07 2008-07-31 Bacoustics Llc Method for debriding wounds
US20080183200A1 (en) * 2006-06-07 2008-07-31 Bacoustics Llc Method of selective and contained ultrasound debridement
US20080214965A1 (en) * 2007-01-04 2008-09-04 Celleration, Inc. Removable multi-channel applicator nozzle
US7431704B2 (en) 2006-06-07 2008-10-07 Bacoustics, Llc Apparatus and method for the treatment of tissue with ultrasound energy by direct contact
US20090177122A1 (en) * 2007-12-28 2009-07-09 Celleration, Inc. Methods for treating inflammatory skin disorders
US7713218B2 (en) 2005-06-23 2010-05-11 Celleration, Inc. Removable applicator nozzle for ultrasound wound therapy device
US7914470B2 (en) 2001-01-12 2011-03-29 Celleration, Inc. Ultrasonic method and device for wound treatment
US8491521B2 (en) 2007-01-04 2013-07-23 Celleration, Inc. Removable multi-channel applicator nozzle
US9333523B2 (en) 2013-09-09 2016-05-10 Omnimist, Ltd. Atomizing spray apparatus
US10905836B2 (en) 2015-04-02 2021-02-02 Hill-Rom Services Pte. Ltd. Manifold for respiratory device
US11224767B2 (en) 2013-11-26 2022-01-18 Sanuwave Health, Inc. Systems and methods for producing and delivering ultrasonic therapies for wound treatment and healing
US20220243964A1 (en) * 2017-11-07 2022-08-04 Suzhou Invotech Scroll Technologies Co., Ltd. Compressor with oil equalizing pipe, parallel compressor set, and oil equalizing method

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US3738574A (en) * 1971-06-15 1973-06-12 Siemens Ag Apparatus for atomizing fluids with a piezoelectrically stimulated oscillator system
DE2724175C3 (en) * 1977-05-27 1979-11-15 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Inhaler for treating the respiratory tract
FR2485402A1 (en) * 1980-06-27 1981-12-31 Ultrasonic Ind DEVICE FOR SPRAYING LIQUIDS, PARTICULARLY INHALER
FR3043576B1 (en) * 2015-11-18 2020-09-18 Areco Finances Et Tech Arfitec MINIATURIZED SPRAYING DEVICE WITH PIEZOELECTRIC TRANSDUCER

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US1939302A (en) * 1929-04-12 1933-12-12 Edward B Benjamin Apparatus for and art of carburation
US3038532A (en) * 1960-01-12 1962-06-12 Bernard J Eisenkraft Spray process equipment
US3200873A (en) * 1962-06-04 1965-08-17 Exxon Research Engineering Co Ultrasonic burner
US3214101A (en) * 1964-03-31 1965-10-26 Little Inc A Apparatus for atomizing a liquid

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860173A (en) * 1970-02-03 1975-01-14 Naoyasu Sata Non-polluting combustion engine having ultrasonic fuel atomizer in place of carburetor
US3700170A (en) * 1970-11-18 1972-10-24 Ceskoslovenska Akademie Ved Generator of monodisperse aerosols
US3648929A (en) * 1971-02-08 1972-03-14 Battelle Memorial Institute Atomizer
US4038348A (en) * 1973-03-26 1977-07-26 Kompanek Harry W Ultrasonic system for improved combustion, emission control and fuel economy on internal combustion engines
US3804329A (en) * 1973-07-27 1974-04-16 J Martner Ultrasonic generator and atomizer apparatus and method
US4085893A (en) * 1974-03-20 1978-04-25 Durley Iii Benton A Ultrasonic humidifiers, atomizers and the like
US4109863A (en) * 1977-08-17 1978-08-29 The United States Of America As Represented By The United States Department Of Energy Apparatus for ultrasonic nebulization
US4301093A (en) * 1978-03-15 1981-11-17 Bosch Siemens Hausgerate Gmbh Atomizer for liquid
US4582654A (en) * 1984-09-12 1986-04-15 Varian Associates, Inc. Nebulizer particularly adapted for analytical purposes
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DE1475194A1 (en) 1969-01-16
FR1508413A (en) 1968-01-05

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