AU726589B2 - An ultrasonic device for atomizing liquids - Google Patents
An ultrasonic device for atomizing liquids Download PDFInfo
- Publication number
- AU726589B2 AU726589B2 AU82399/98A AU8239998A AU726589B2 AU 726589 B2 AU726589 B2 AU 726589B2 AU 82399/98 A AU82399/98 A AU 82399/98A AU 8239998 A AU8239998 A AU 8239998A AU 726589 B2 AU726589 B2 AU 726589B2
- Authority
- AU
- Australia
- Prior art keywords
- reservoir
- liquid
- unit
- transducer
- liquid 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
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- 239000007788 liquid Substances 0.000 title claims abstract description 109
- 238000000889 atomisation Methods 0.000 claims abstract description 30
- 239000012535 impurity Substances 0.000 claims description 34
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000006199 nebulizer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000276 sedentary effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- 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
- B05B17/0615—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 spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
-
- 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
Landscapes
- Special Spraying Apparatus (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to an ultrasonic device for atomizing liquids. This device is comprised of at least one atomization unit (1) wherein an approximately upward directed ultrasonic transducer (2) is located at the bottom of each unit (1) and the top of each unit (1) is open (covered by gas), and is characterized by a reservoir (3) connected to all of the units (1), means for maintaining a minimum liquid level in each unit during atomization, a high frequency electric supply connected to each transducer (2), and means (6) for circulating the liquid to be atomized through the reservoir (3), across each transducer (2), and back to the reservoir (3).
Description
1 Amended AN ULTRASONIC DEVICE FOR ATOMZING LIQUIDS FIELD OF THE INVENTION The present invention generally relates to an ultrasonic device for atomizing liquids. More specifically the present invention relates to an ultrasonic device for atomizing liquids having at least one atomization unit a reservoir connected to all of the units, means for maintaining the liquid level in each unit, a high frequency electric supply connected to each transducer, and means for circulating (accelerating) the liquid from the reservoir, across each transducer, and back to the reservoir, wherein each unit is characterized by having a lower (10) and an upper outlets for removing setteling impurities and floating impurities respectively.
BACKGROUND OF THE INVENTION The standard ultrasonic devices for atomizing liquids are normally comprised of a single atomization unit wherein an upward directed liquid covered ultrasonic transducer is located at the bottom of the unit and the top of the unit is open (covered by a gas). These known devices have numerous operational problems which prevent them from being used in many applications. These problems exist because each element of the standard known device presents specific operational limitations.
Firstly, ultrasonic transducers will almost instantaneously thermally over heat if exposed to air (or gas) during operation. Movement of the standard devices may result in tipping of the liquid level above the transducer such that the transducer may become exposed to air or gas. Placing of a sufficient (taller) column of liquid AMENDED SHEET WO 99/04907 PCT/IL98/00331 2 above the transducer may help to solve the device mobility problem, but it adversely effects the operational efficiency of the transducers.
Secondly, the vibrating surface of ultrasonic transducers are adversely effected by accumulated percipitates and impurity coatings (deposits) caused by the liquid environment. These coatings often deteriorate transducer efficiency and create a thermal insulation layer which eventually results in the transducer thermally overheating.
Impurities in liquids have many sources. Often impurities may be initially present in the liquid. Impurities may enter into the liquid through contact with the air (or gas). Sometimes impurities are a result of interactions between the liquid and components of the device pumps, gaskets, etc.). Furthermore impurities may be produced by the interaction process with the transducer from the ultrasonic waves, chemical interactions, or electrolysis). These impurities often aggregate, and further contribute to the accumulation of coatings (deposits) on the transducers.
Thirdly, use of multiple transducers within the same atomization unit (to increase the atomization rate and output) results in liquid turbulence effects on the transducers (including destructive electrical etching phenomena).
The device of the present invention overcomes the above mentioned disadvantages, allows device location transfer (without risking transducer exposure), and prevents impurity- accumulation.
Furthermore, most known atomization devices produce a broad statistical distribution of droplet sizes. This has disadvantages in applications requiring ultraaccurate delivery systems medicines, disinfectants, fungicides, etc.). One embodiment of the device of the present invention is especially for allowing 3 Amended production of a narrow statistical distribution of about 0.5 to 5.0 micron diameter droplets.
US 3901443 describes an ultrasonic wave nebulizer comprising a nebulizer chamber containing a liquid, a piezoelectric transducer mounted at the chamber base and a pair of transistors that oscillate the transducer. The nebulizing chamber has means for adjusting the surface level of the liquid to a predetermined value. However, although US 3901443 solves overcomes some of the disadvantages mentioned above, it does not provide a solution for the critical problem associated with impurities. Moreover US 3901443 relates to only one transducer in one nebulizing chamber and not to the posibility of a number of units operating simultaneously. For devices of more than one operating unit, more complicated solutions are needed.
SUMMARY OF THE INVENTION The present invention relates to an ultrasonic device for atomizing liquids. This device is comprised of at least one atomization unit (wherein an approximately upward directed ultrasonic transducer is located at the bottom of each unit and the top of each unit is open (covered by gas), a reservoir connected to all of the units, means for maintaining a minimum liquid level in each unit during atomization, a high frequency electric supply connected to each transducer, and means for circulating the liquid (to be atomized) through the reservoir, across each transducer, and back to the reservoir, wherein each unit is characterized by having a lower (10) and an upper outlets for removing setteling impurities and floating impurities respectively.
DETAILED DESCRIPTION OF THE INVENTION In the context of the present invention a "transducer" relates to any immersed transducer, mechanical component, electrical component, or electronic component whereby vibrations of above 800 KHz result in the production of droplets, or in the atomization of the imersion liquid, or in the production of an aerosal. Furthermore, in the context of the present invention, an "upward directed" ultrasonic transducer relates to the essential trajectory ection of the resultant droplets, atomization, or aerosal. In the context of the present AMENDED
SHEET
4 Amended 4fr invention "apoimtl upad reae to* sml nlweiton rmtu pad whevein anapproximately upward rete tosmllranle devatnsues oted upardh wherem thesesall angle arte nevfer c ull.oen(ovrd yga) Theft preeivetioretsg te anutrasonuc dicte fpormatiln liquid espectiall unsteful fprdn a nre eactrwatia ditribtion f aboueft 0.5atos5.0 microtn taetry fecp ev droplets. Thisdc otise teat oet mzton ntv whericent anmeapproximan idetely na upward (ibre directedutaoiirndcri oe anth Benis aredie bynh olientdin the uiWhtetransducer int thopriatey upardl upwards, the fall back trajectory of the heavy droplets returns the droplets directly back to the area of the liquid sun-face from where transducer pressured droplets emerge. This fall back temporarily interferes with the emergence of new droplets, thus adversely effecting the efficiency of aerosol particle production (atomnization).
When the transducer is oriented in the approximately upward direction (slightly skew), the fall back trajectory of the heavy droplets is not identical to the emergence trajectory of these same particles. Thus the efficiency of the transducer is only effected by nominal losses associated with the oblique angle of approximately upward.
Embodiments of the device of the present invention have from one atomization unit to about 100 atomization units. The preferred embodiment of the device of the present invention has from about 12 to about 36 atomization units.
In the context of the present invention "pipes" relates to tubes, ducts, conduits, tunnels, passages, or the like.
AMENDED SHEET WO 99/04907 PCT/IL98/00331 The device of the present invention is characterized by a reservoir connected to all of the units by pipes, means for maintaining a minimum liquid level in each unit during atomization, a high frequency electric supply connected to each transducer, and means for circulating the liquid to be atomized through the reservoir and through the pipes and across each transducer.
According to the preferred embodiment of the device of the present invention, the operational frequency range of the electricity supplied to the transducers is above 800 KHz. This frequency range has been found to be much more effective for the production of ultra-small aerosol atomization droplets (0.5 to 5.0 micron diameter).
Transducer operating life is dependent on the minimization of accumulated impurity and percipitate buildup on it's vibrating surface. These impurities and percipatates may also be caused by operational interactions between the transducer and the liquid. The primary mechanism of the present invention for preventing the accumulation of coatings (deposits) on the transducer surface is by circulating the liquid across each transducer (preventing impurities from settling on the transducer).
In the preferred embodiment of the device of the present invention, floating impurities, settling impurities, percipatates, or filterable impurities are removed from the liquid at the reservoir. The choice of which type or how many types of impurities (or percipatates) are removed (and also their method of removal) is functionally determined according to the nature of the liquid being atomized.
The physical adsorption and adhesion properties of liquid borne impurities (residues) and percipatates are strongly dependent on the flow rate of the liquid.
Insolubility, settling and floating processes are optimal in sedentary reservoirs (having no traversing liquids).
WO 99/04907 PCT/IL98/00331 6 Operationally, in the preferred embodiment of the device of the present invention the reservoir is divided into two sections such that any liquid (passing from a unit and through the reservoir) passes through both sections, and such that the flow rates of the liquid entering each section are different. The using of two liquid velocities at different speeds improves the impurity and percipatate removal processes by allowing each process to be performed in the reservoir section most appropriate.
There are many possible means for maintaining a minimum liquid level in each unit during atomization. These means include the use of liquid level sensors floats, electrodes, etc.) and controlled refilling liquid flow valves for each unit.
According to the preferred embodiment of the device of the present invention, the means for maintaining a minimum liquid level in each unit during atomization is comprised of the plurality of units having aligned heights with the reservoir (such that a maintained liquid level in the reservoir provides a predetermined liquid level in the units), and maintaining the liquid level in the reservoir by a inlet valve controlled by a liquid level sensor (such that lowering of the liquid level in the reservoir activates the sensor which in turn causes the valve to open whereby additional liquid is added to the reservoir until the reservoir's liquid level is restored).
In the context of the present invention "aligned heights" relates to the equalization of the hydrostatic pressure between the reservoir and the units. This equalization may be performed either by physically matching the liquid levels at the same elevation, or by using a pump to compensate for differences in elevation.
According to the preferred embodiment of the device of the present invention the electric supply connected to each transducer has a sensor connected to the electric WO 99/04907 PCT/IL98/00331 7 supply. This sensor is for automatically turning off the electric supply whenever it is detected that the liquid level in the reservoir is below a predetermined height.
Furthermore, the electric supply connected to each transducer has a sensor connected to the electric supply. This sensor is for automatically turning off the electric supply whenever a sensor detected that the angle of reservoir's surface is outside of predetermined limits.
Another feature of the preferred embodiment of the device of the present invention is an inertia separation cyclone (for removing droplets of greater than about micron diameter from the produced (atomized) vapor). This cyclone (feature) is comprised of a common vapor chamber attached to the top of all of the atomization units, an air pump attached to the chamber (for continuously providing a supply of high velocity air (or gas) into and through the chamber), and an open topped vertical cylinder or cone connected to the chamber (such that the air (or gas) and the vapor in the chamber tangentially enters into the bottom of the cylinder or cone).
Operationally the droplets in the produced vapor are carried away from the top of the atomization units by the high velocity air (or gas). When these droplets enter into the spiral path in the cylinder (or cone), the heavier (larger) droplets collide with the cylinder (or cone) and fall back along the cyclone wall (for eventual return to the reservoir).
The present invention will be further described by Figures 1 through 3. These figures are solely intended to illustrate and clarify in detail selected embodiments of the invention and are not intended to limit the scope of the invention in any manner.
WO 99/04907 PCT/IL98/00331 8 Figure 1 illustrates a profile cross section view of a liquid circulation path through a partial device of a basic embodiment type.
Figure 2 illustrates a profile cross section view of a liquid circulation path through a partial device of the preferred embodiment type.
Figure 3 illustrates a profile cross section view of a liquid circulation path through another partial device of the preferred embodiment type.
Figure 1 illustrates a profile cross section view of a liquid circulation path through a partial device of a basic embodiment type. Parts of an ultrasonic device for atomizing liquids are shown, including a plurality of atomization units wherein an approximately upward directed ultrasonic transducer is located at the bottom of each unit and the top of each unit is open (covered by gas), and characterized by a reservoir connected to all of the units by pipes and a pump for circulating the liquid to be atomized through the reservoir and through the pipes and across each transducer.
Operationally, liquid is pumped from the central region of the reservoir (where both floating and settling impurities are minimum) through the liquid dispersion pipe This pumped liquid is directed in each unit across the surface of each transducer.
The kinetic energy of this pumped liquid minimizes settling type impurities from resting on the transducer. These settling type impurities are carried away with the flowing liquid's current. The floating type impurities simultaneously rise to the surface of the liquid.
Defining the surface of the liquid (in each unit) is a liquid overflow pipe outlet.
The overflow liquid carries both the floating type impurities and those settling type WO 99/04907 PCT/IL98/00331 9 impurities which have been carried this far in the flowing liquid's current. This overflow liquid completes the circulation by returning to the reservoir. Thus impurities tend to concentrate in the reservoir rather than in the unit or on the transducer.
Figure 2 illustrates a profile cross section view of a liquid circulation path through a partial device of the preferred embodiment type. Parts of an ultrasonic device for atomizing liquids are shown, including a plurality of atomization units wherein an approximately upward directed ultrasonic transducer is located at the bottom of each unit and the top of each unit is open (covered by gas), and characterized by a reservoir connected to all of the units by pipes and a pump for circulating the liquid to be atomized through the reservoir and through the pipes and across each transducer.
Each unit contains a liquid inlet (back flow preventing) orifice which directs the pumped liquid at the transducer's surface, a surface overflow outlet for draining floating type impurities, and a bottom outlet (10) for draining settlement type impurities. Orifice has a much larger diameter than orifice Functionally, the reservoir is divided into two sections such that any liquid (passing from a unit and through the reservoir) passes through both sections, and such that the velocities of the liquid entering each section are different. Here the reservoir is divided into a common reservoir section and a unit specific reservoir section The unit specific reservoir section contains two inlets being the extension of the outlets (10) from the unit, and an outlet (11) to the-common reservoir section.
Functionally the unit specific reservoir serves as a means for maintaining a minimum liquid level in each unit during atomization, when seen in conjunction WO 99/04907 PCT/IL98/00331 with unit inlet orifice This minimum liquid level is at the height of outlet (11) with respect to the unit. Furthermore, failure of new liquid to enter into the unit through orifice results in a back flow of liquid from reservoir section (7) through orifice (10) into unit Figure 3 illustrates a profile cross section view of a liquid circulation path through another partial device of the preferred embodiment type. Parts of an ultrasonic device for atomizing liquids are shown, including one of a plurality of atomization units wherein an approximately upward directed ultrasonic transducer is located at the bottom of the unit and the top of the unit is open (covered by gas), and characterized by a reservoir connected to all of the units by pipes (4) and a pump for circulating the liquid to be atomized through the reservoir and through the pipes and across each transducer.
The unit contains a liquid inlet (back flow preventing) orifice which directs the pumped liquid at the transducer's surface, a surface overflow outlet for draining floating type impurities, and a bottom outlet (10) for draining settlement type impurities. The diameter of orifice is much larger than the diameter of orifice Functionally, the reservoir is divided into two sections such that any liquid (passing from a unit and through the reservoir) passes through both sections, and such that the velocities of the liquid entering each section are different. Here the reservoir is divided into a common reservoir section and a unit specific reservoir section The unit specific reservoir section contains two inlets -being the extension of the outlets (10) from the unit, and two outlets (11) (12) to the common reservoir section. Outlet (12) is of very small diameter, and only effects the liquid level in WO 99/04907 PCT/IL98/00331 11 reservoir section when the device of the present invention is turned off for a long time whereby most of the residual liquid in the unit will drain to the common reservoir Functionally the upper outlet (11) serves as a means for maintaining a minimum liquid level in each unit during atomization, even when seen in conjunction with similar upper outlets for other units (not shown) which share the common upper overflow wall This minimum liquid level is at the height of outlet (11) with respect to the unit. The common upper overflow wall is around all or part of the plurality of atomizing units. Thus all of the atomizing units sharing a common upper overflow wall are effectively operating in a common liquid reservoir whenever the overflow condition from some of these units is occurring. In the unit, failure of new liquid to enter will result in liquid in the reservoir section back flowing through outlet (10) into the unit.
Claims (8)
1. An ultrasonic device for atomizing liquids, comprising at least one atomization unit wherein an approximately upward directed ultrasonic transducer is located at the bottom of each unit and the top of each unit is open, a reservoir connected to all of the units means for maintaining a minimu liquid level in each unit during atomization, an electric supply connected to each transducer, and means for circulating the liquid from the reservoir across each transducer, and back to the reservoir, wherein each atomizing unit is characterized by having a lower (10) and an upper outlets for removing setteling impurities and floating impurities respectively.
2. A device according to claim 1 wherein the operational frequency range of the electricity supplied to the transducers is above 800 KHz.
3. A device according to claim 1 wherein the reservoir is divided into two sections and such that any liquid passing from a unit and through the reservoir passes through both sections, and such that the flow rates of said liquid entering each section are different.
4. A device according to claim 1 wherein the means for mitnnga minimum liquid level in each unit during atomization is comprised of the plurality of units having aligned heights with the reservoir such that a maintained liquid level in the reservoir provides a predeternined liquid level in the units, and the liquid level in the reservoir is maintained by a inlet valve controlled by a liquid level sensor, such that lowering of the liquid level in the reservoir activates said sensor which in turn causes said valve to open whereby additional liquid is added to e oir until said reservoirs liquid level is restored.
AMENDED SHEET 4 0 4 0 0 o S o• 13 Amended A device according to claim 1 wherein the electric supply connected to each transducer has a sensor connected to the electric supply, and said sensor is for automatically turning off electric supply whenever the detects that the liquid level in the reservoir is below a predetermined height.
6. A device according to claim 1 wherein the electric supply connected to each transducer has a sensor connected to the electric supply, and said sensor is for automatically turning off said electric supply whenever the sensor detects that the angle of liquid in the reservoir is outside of predetermined limits.
7. A device according to claim 1 having from about 12 to about 36 atomization units.
8. A device according to claim 1 having an inertia separation cyclone for removing droplets of greater than about 5.0 micron diameter from the produced vapor, comprising a common vapor chamber attached to the top of all of the atomization units, an air pump attached to said chamber for continuously providing a supply of high velocity air into and through said chamber, and an open topped vertical cylinder or cone connected to said chamber such that the air and vapor in said chamber tangentially enters into the bottom of the cylinder or cone. AMENDED SHEET
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL12141497A IL121414A (en) | 1997-07-28 | 1997-07-28 | Ultrasonic device for atomizing liquids |
| IL121414 | 1997-07-28 | ||
| PCT/IL1998/000331 WO1999004907A1 (en) | 1997-07-28 | 1998-07-15 | Ultrasonic atomizing device with liquid circulating line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU8239998A AU8239998A (en) | 1999-02-16 |
| AU726589B2 true AU726589B2 (en) | 2000-11-09 |
Family
ID=11070440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU82399/98A Ceased AU726589B2 (en) | 1997-07-28 | 1998-07-15 | An ultrasonic device for atomizing liquids |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0999899B1 (en) |
| JP (1) | JP4065366B2 (en) |
| KR (1) | KR100517404B1 (en) |
| CN (1) | CN1106890C (en) |
| AT (1) | ATE212567T1 (en) |
| AU (1) | AU726589B2 (en) |
| BR (1) | BR9815894A (en) |
| CA (1) | CA2297796C (en) |
| DE (1) | DE69803679T2 (en) |
| DK (1) | DK0999899T3 (en) |
| ES (1) | ES2170509T3 (en) |
| PT (1) | PT999899E (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645612B2 (en) | 2001-08-07 | 2003-11-11 | Saint-Gobain Ceramics & Plastics, Inc. | High solids hBN slurry, hBN paste, spherical hBN powder, and methods of making and using them |
| JP4922596B2 (en) * | 2004-10-13 | 2012-04-25 | 福助工業株式会社 | Fog generator for air conditioning |
| FR2941378A1 (en) * | 2009-01-23 | 2010-07-30 | Gloster Europe | APPARATUS FOR DECONTAMINATION BY FOGGING |
| CN210935613U (en) * | 2019-04-09 | 2020-07-07 | 小卫（上海）生物科技有限公司 | an atomization system |
| CN110756375B (en) * | 2019-11-01 | 2020-12-01 | 江南大学 | A double-layer continuous ultrasonic atomization classification device and classification method |
| CN111001504A (en) * | 2019-12-19 | 2020-04-14 | 广东纳德新材料有限公司 | Automatic wax spraying system and wax spraying method |
| CN114289237A (en) * | 2022-01-27 | 2022-04-08 | 昆山晟成光电科技有限公司 | Automatic atomizing device of fluid infusion |
| CN119852064B (en) * | 2025-03-19 | 2025-07-18 | 厦门明翰电气股份有限公司 | An energy-saving photovoltaic boost box transformer device and its intelligent terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901443A (en) * | 1973-02-06 | 1975-08-26 | Tdk Electronics Co Ltd | Ultrasonic wave nebulizer |
| JPS55124565A (en) * | 1979-03-20 | 1980-09-25 | Toshiba Corp | Ultrasonic atomizer |
| US5024856A (en) * | 1988-03-18 | 1991-06-18 | Ernst Hohnerlein | Method and apparatus for applying a flux |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122389A1 (en) * | 1991-07-05 | 1993-01-14 | Brita Water Filter Syst Ltd | Ultrasonic humidification appliance for household use with water supply unit - provides water in predetermined vol. or in dish and uses ultrasonic oscillator to produce vapour from water drops |
-
1998
- 1998-07-15 EP EP98932495A patent/EP0999899B1/en not_active Expired - Lifetime
- 1998-07-15 AU AU82399/98A patent/AU726589B2/en not_active Ceased
- 1998-07-15 JP JP2000503941A patent/JP4065366B2/en not_active Expired - Fee Related
- 1998-07-15 CN CN98807715A patent/CN1106890C/en not_active Expired - Fee Related
- 1998-07-15 AT AT98932495T patent/ATE212567T1/en not_active IP Right Cessation
- 1998-07-15 CA CA002297796A patent/CA2297796C/en not_active Expired - Fee Related
- 1998-07-15 BR BR9815894-5A patent/BR9815894A/en not_active IP Right Cessation
- 1998-07-15 DE DE69803679T patent/DE69803679T2/en not_active Expired - Fee Related
- 1998-07-15 ES ES98932495T patent/ES2170509T3/en not_active Expired - Lifetime
- 1998-07-15 KR KR10-2000-7000972A patent/KR100517404B1/en not_active Expired - Fee Related
- 1998-07-15 DK DK98932495T patent/DK0999899T3/en active
- 1998-07-15 PT PT98932495T patent/PT999899E/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901443A (en) * | 1973-02-06 | 1975-08-26 | Tdk Electronics Co Ltd | Ultrasonic wave nebulizer |
| JPS55124565A (en) * | 1979-03-20 | 1980-09-25 | Toshiba Corp | Ultrasonic atomizer |
| US5024856A (en) * | 1988-03-18 | 1991-06-18 | Ernst Hohnerlein | Method and apparatus for applying a flux |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0999899B1 (en) | 2002-01-30 |
| CN1106890C (en) | 2003-04-30 |
| CA2297796A1 (en) | 1999-02-04 |
| BR9815894A (en) | 2001-01-16 |
| DK0999899T3 (en) | 2002-05-13 |
| CA2297796C (en) | 2008-04-15 |
| DE69803679D1 (en) | 2002-03-14 |
| JP2001510731A (en) | 2001-08-07 |
| PT999899E (en) | 2002-05-31 |
| DE69803679T2 (en) | 2002-06-13 |
| KR100517404B1 (en) | 2005-09-28 |
| JP4065366B2 (en) | 2008-03-26 |
| EP0999899A1 (en) | 2000-05-17 |
| ATE212567T1 (en) | 2002-02-15 |
| HK1028749A1 (en) | 2001-03-02 |
| CN1265610A (en) | 2000-09-06 |
| AU8239998A (en) | 1999-02-16 |
| KR20010022393A (en) | 2001-03-15 |
| ES2170509T3 (en) | 2002-08-01 |
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