CN1106890C - Ultrasonic atimizing device with liquid circulating line - Google Patents
Ultrasonic atimizing device with liquid circulating line Download PDFInfo
- Publication number
- CN1106890C CN1106890C CN98807715A CN98807715A CN1106890C CN 1106890 C CN1106890 C CN 1106890C CN 98807715 A CN98807715 A CN 98807715A CN 98807715 A CN98807715 A CN 98807715A CN 1106890 C CN1106890 C CN 1106890C
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- Prior art keywords
- liquid
- unit
- transducer
- liquid pool
- power supply
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- 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 - Fee Related
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- 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
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- 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
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- 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
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
Invention field
The present invention relates generally to ultrasonic device for atomizing liquids.The present invention is specifically related to a kind of like this ultrasonic device for atomizing liquids, and this device has: at least one atomization unit; Be connected in the liquid pool of all unit; The device that keeps liquid level in each unit; Be connected in the high frequency electric source of each transducer; EGR, be used to make liquid circulation (acceleration), liquid flowed out, from liquid pool through each transducer, flow back to liquid pool then, wherein each unit is characterised in that to have and is respectively applied for the lower part outlet (10) and the top outlet (9) of removing sedimentation impurity and swimming impurity.
Background of invention
The standard ultrasound device of atomized liquid is made up of single atomization unit usually, and wherein the orientation ultrasonic transducer by the liquid covering up is configured in the bottom of unit, and the top of unit is open (being covered by gas).These known devices have many operation shortcomings, and these shortcomings have hindered the application of these devices aspect a lot.Each parts that these shortcomings originate from the standard known devices have distinctive operation limitation.
At first, if ultrasonic transducer is exposed to air (or gas) during operation, then this transducer is almost overheated in the moment generation.Mobile standard set-up may make the liquid level above the transducer tilt, thereby makes transducer be exposed to air or gas.Above transducer, form sufficiently high fluid column and help solving device to move problem, but this operating efficiency to transducer produces adverse influence.
The second, the aggregate and precipitate thing and the impurity cover layer that are caused by liquid environment of living in will produce disadvantageous effect to the vibration surface of ultrasonic transducer.These cover layers have reduced transducer efficient usually, and form one deck heat insulation layer, and it is overheated that this layer heat insulation layer causes transducer to take place at last.
Impurity in the liquid has a lot of sources.Usually have impurity in liquid at the very start, impurity can enter liquid by the contact of liquid-to-air (or gas).Impurity is results of interaction between liquid and the bulking block (for example pump, packing ring etc.) sometimes.In addition, the interaction process (for example ultrasonic wave effect, chemical action or electrolysis) with transducer also may produce impurity.These impurity often concentrate at together, impel and assemble one deck cover layer (sedimentary deposit) on transducer.
The 3rd, in same atomization unit, adopt a plurality of transducers (to increase atomization speed and output) will cause liquid turbulence to act on transducer (comprising destructive galvanic corrosion phenomenon).
Apparatus of the present invention can overcome above-mentioned shortcoming, and the equipment that makes can move position (not having the danger that exposes transducer) and can prevent accumulation of impurities.
In addition, the droplet granularity that produces of most of known atomising devices has very wide statistical distribution curve.This is a shortcoming in the application of the super accurate induction system of needs (for example medicine, disinfectant, bactericide etc.).An embodiment of apparatus of the present invention can produce very narrow statistical distribution curve especially, and its mist particle diameter is between 0.5～5.0 μ m.
A kind of ultrasonic ultrasonic delay line memory of U.S. Patent No. 3901443 explanations, this atomizer comprises the spray chamber that comprises liquid, the PZT (piezoelectric transducer) that is contained in the spray chamber bottom and a pair of transistor that makes transducer that vibration take place.This spray chamber has the device that the liquid levels height is adjusted to predetermined value.Although this patent No.3901443 solves and overcome some above-mentioned shortcomings, it does not have to solve the major issue about impurity.In addition, 3901443 of U.S. Patent No.s relate to a transducer in the spray chamber, do not relate to the possibility that many unit are operated simultaneously.For device, need more complicated solution more than an operating unit.
Summary of the invention
The present invention relates to ultrasonic device for atomizing liquids.This device comprises: (wherein, the approximate ultrasonic transducer up of orientation is configured in the bottom of each unit at least one atomization unit, and the top of each unit is open (being covered by gas); Be connected in the liquid pool of all unit; The device that in atomization period each unit of chien shih, keeps the minimum fluid height; Be connected in the high frequency electric source of each transducer; EGR, be used for circulation (to be atomized) liquid, make liquid flow out liquid pool, each transducer of flowing through, and then get back to liquid pool, wherein each unit is characterised in that and has the lower part outlet (10) and the top outlet (9) of removing sedimentation impurity respectively and swimming impurity.Detailed description of the invention
Within the scope of the invention, " transducer " means transducer, mechanical part, electric component or the electronic unit in any immersion liquid, and by these parts, the above vibration of 800KHz can be led and produce droplet, or the atomizing immersion liquid, or produces aerosol.In addition, within the scope of the present invention, the ultrasonic transducer of " orientation up " is relevant with institute fog grain, spraying or aerocolloidal main course bearing.Within the scope of the invention, " being similar to up " relates to the real low-angle of direction up departed from, and said herein low-angle will not be zero.
The present invention relates to ultrasonic device for atomizing liquids, this device is effective especially for producing very narrow statistical distribution curve, and its mist particle diameter is about 0.5～5.0 μ m.This device comprises at least one atomization unit, and wherein the approximate ultrasonic transducer up of orientation is configured in the bottom of each unit, and the top of each unit is open (being covered by gas).
Make transducer be configured to approximate up direction and the direction that is not configured to accurately up can get some benefits.Main benefit relates to the track that returns of effusion heavy fog grain, and these heavy fog grains do not have enough momentum to continue to stay for a long time up (air bearing) direction, and it will turn back on the liquid level of unit.When transducer orientation accurately up the time, the returning track and will make a lot of droplets directly turn back to the liquid level zone of sending droplet from transducer of heavy fog grain.This falling has influenced the emission of new droplet for the moment, thereby generation (atomizing) efficient of particulate is produced adverse influence.
When transducer was positioned at the direction (tilting a little) that is similar to up, the falling track of heavy fog grain was just different with these emission tracks with like-particles.Thereby the efficient of transducer only is subjected to minimum loss, and this loss is relevant with approximate inclination angle up.
The embodiment of apparatus of the present invention has an atomization unit to about 100 atomization units.The preferred embodiment of apparatus of the present invention has about 12～36 atomization units.
Within the scope of the invention, " pipe " means pipeline, socket, conduit, tunnel, passage etc.
Apparatus of the present invention are characterised in that to have: the liquid pool that is connected in all unit with pipe; At the device that in each unit, keeps the minimum fluid height between atomization period; Be connected in the high frequency electric source of each transducer; And make liquid circulation flow to be atomized cross the device of liquid pool, pipe and each transducer.
According to the preferred embodiment of apparatus of the present invention, the operating frequency range of power supply that is transported to transducer is more than 800kHz.Found that this frequency range is more efficiently for producing ultra-fine aerosol atomizing droplet (particle size diameter is 0.5～5.0 μ m).
The working life of transducer depends on the degree that reduces accumulation of impurities and deposit buildup on its vibration plane.Also cause these impurity and precipitation in operational interaction between transducer and the liquid.The present invention prevents to be to make liquid circulation flow to cross each transducer (preventing that impurity is deposited on the transducer) in the dominant mechanism that forms the cover layer of assembling (sedimentary deposit) on the transducer face.
In the preferred embodiment of apparatus of the present invention, but the impurity of the impurity that swims in the liquid, sedimentation impurity, sediment or filtering all can be removed in liquid pool.Removing the sort of impurity or remove being chosen in of how many kinds of impurity (or precipitation) (and their method of removing) should be according to the characteristic decision of liquid to be atomized in the operation.
Physical absorption and adhesion characteristics that liquid carries impurity (residue) and precipitation depend on flow rate of liquid consumingly.(do not have horizontal liquid flow) in fixed liquid pool, it is best adopting the method, sedimentation and the floatation that reduce solubility.
In the preferred embodiment of apparatus of the present invention, liquid pool is divided into two parts in operation, makes any (from the atomization unit liquid pool of flowing through) liquid all flow through this two parts, and make that the flow rate of liquid that enters various piece is different.Use two kinds of different flow rate of liquid and improved that impurity is removed technology and precipitation is removed technology, because can carry out each technology in only liquid pool portion.
For keeping the minimum level height in each unit during operation, can adopt a lot of available methods.These methods comprise and adopt liquid height sensor (for example float, electrode etc.) and to the flow-controllable valve of each unit application liquid make-up.
Preferred embodiment according to apparatus of the present invention, between atomization period, keep the device of minimum fluid height in each unit to consist of a number, these unit have the height of being proofreaied and correct by liquid pool (thereby the liquid level that keeps in the liquid pool forms the predetermined level height in all unit), and utilize inlet valve to keep liquid level in the liquid pool, this inlet valve (makes following general who has surrendered's start sensor of liquid level in the liquid pool by liquid surface height sensor control, this sensor makes this valve open again, thereby make the liquid that adds join liquid pool, until the liquid level that recovers liquid pool).
Within the scope of the invention, " calibrated altitude " relates to the fluid pressure that makes between liquid pool and the unit and equates.Realize this equal method or liquid level is adjusted to sustained height, perhaps come compensate for height poor with pump with physical method.
According to the preferred embodiment of apparatus of the present invention, the power supply that is connected in each transducer has the sensor that is connected in this power supply.Only when sensor detected liquid level in the liquid pool and is lower than predetermined altitude, this sensor just made power supply cut off automatically.
In addition, the power supply that is connected in each transducer also has a kind of sensor that is connected in this power supply.As long as this sensor detects the angle of liquid pool liquid level when surpassing preset range, this sensor just makes power supply cut off automatically.
Another parts of apparatus of the present invention preferred embodiment are inertia separate hydrocyclone (being used for removing the droplet of diameter greater than about 5.0 μ m from the atomizing fog that produces).This cyclone (parts) is made of shared moist chambers, air pump and open vertical cylinder that occupy the top or cone, this moist chambers is connected in the top of all atomization units, this air pump connects moist chambers (so that sending and sent high-speed air (or gas) to moist chambers continuously), and this vertical cylinder or cone are connected in moist chambers (making air (or gas) and fog can tangentially enter the bottom of this cylinder or cone).
Droplet in the fog of producing in operation by the top of high-speed air (gas) band from atomization unit.When these droplets entered spiral path in the cylinder (or cone), heavier (bigger) droplet just bumped with cylinder (or cone), and along eddy flow wall reflux (so that being back to liquid pool at last).
Below further with reference to figure 1～3 explanation the present invention.These figure only are used for the selected embodiment of the invention of illustration and sets forth in detail, limit the scope of the invention by any way unintentionally.
Fig. 1 is the profile cross-sectional view that passes the liquid circulating passage footpath of basic model embodiment partial devices;
Fig. 2 is the profile cross-sectional view that passes the liquid circulating passage footpath of preferred type embodiment partial devices;
Fig. 3 is the profile cross-sectional view that passes the liquid circulating passage footpath of another preferred type embodiment partial devices.
Fig. 1 illustrates the profile cross-sectional view through the liquid circulating passage footpath of basic model embodiment partial devices.The ultrasonic device for atomizing liquids parts are shown, comprise many atomization units (1), wherein, the approximate ultrasonic transducer (2) up of orientation is configured in the bottom of each unit, the top of each unit is open (being covered by gas), this Vltrasonic device is characterised in that liquid pool (3) and pump (6), and the former is connected in all unit by pipe (4) (5), and the latter is used to make liquid circulation flow to be atomized to cross liquid pool, pipe and each transducer.
In operation, liquid distributes pipe (4) from central area (all minimum regardless of swim impurity or sedimentation impurity in this zone) pumping liquid of liquid pool.Each unit of the flow direction that pumps, the surface of crossing each transducer.The impurity that this kinetic energy that pumps liquid can reduce sedimentation type as far as possible rests on transducer.The impurity of these sedimentation types can be taken away by liquid flow flowing.The type that swims impurity then rises on the liquid level simultaneously.
What determine (in each unit) liquid level is the outlet of fluid over-flow pipe (5).Overflow fluid and both taken away the impurity of the type that swims, take away again and be carried those sedimentation type impurity that enter in the streaming flow stream.This liquid that overflows returns liquid pool and finishes circulation.These impurity trend towards assembling in liquid pool rather than in the unit or on the transducer.
Fig. 2 illustrates the profile cross-sectional view of the liquid circulating path of the partial devices of passing preferred type embodiment.Ultrasonic device for atomizing liquids shown in the figure, this device comprises many atomization units (1), wherein the approximate ultrasonic transducer (2) up of orientation is configured in the bottom of each unit, the top of each unit is open (being covered by gas, this device is characterised in that liquid pool (3) (7) and pump (6), the former is connected in all unit by pipe (4) (5), and the liquid to be atomized and latter is used to circulate makes it flow through liquid pool, pipe and across each transducer.
Each unit comprises that liquid enters (anti-backflow) mouthful (8), surperficial overflow outlet (9) and outlet at bottom (10), this inlet port makes the fluid that pumps facing to transducer face, this surface overflow outlet is used for discharging the type impurity that swims, and outlet at bottom is used to discharge sedimentation type impurity.The diameter of inlet port (8) is greater than the diameter of outlet at bottom (10).
Liquid pool is divided into two parts on function, make any liquid of (flowing through liquid pool from the unit) all flow through this two parts, and the feasible speed that enters the liquid of each several part is different.Liquid pool herein is divided into the proprietary liquid pool portion (7) of common liquid pool portion (3) and unit.
The proprietary liquid pool portion in unit comprises two entrance and exits (11), and this inlet is the extension of unit middle outlet (9) (10), leads to common liquid pool portion and export (11).The proprietary liquid pool in unit play a part on the function a kind of in atomization period each unit of chien shih liquid level remain on a kind of device of minimum constructive height, together with unit inlet (8) together, this effect as can be seen.For the unit, this minimum fluid height is positioned at the height of outlet (11).In addition, new liq, will not cause liquid to reflux through inlet (10) from liquid pool portion (7) and enter unit (1) when entering the unit through inlet (8).
Fig. 3 illustrates the profile cross-sectional view in the liquid circulating passage footpath of passing another preferred type embodiment partial devices.Ultrasonic device for atomizing liquids shown in the figure, comprise a unit in many atomization units (1), wherein the approximate ultrasonic transducer upwards of orientation is configured in the bottom of unit, the top of unit is open (being covered by gas), this device is characterised in that liquid pool (3) (7) and pump (6), the former is connected in all unit by pipe (4) (5), and the latter makes liquid circulation flow to be atomized cross liquid pool, pipe and crosses each transducer.
The unit comprises liquid inlet (preventing refluxing opening) (8), surperficial overflow outlet (9) and outlet at bottom (10), this inlet (8) makes the liquid that pumps face toward the surface of transducer, this outlet (9) is used to discharge the impurity of float type, and exports the impurity that (10) are used to discharge sedimentation type.The diameter of inlet (8) is much larger than the diameter of outlet (10).
Liquid pool is divided into two parts on function, make that (flowing through liquid pool from the unit) any liquid all flows through two parts, and the feasible liquid velocity that enters various piece is different.Liquid pool herein is divided into the proprietary liquid pool portion (7) of shared liquid pool portion (3) and unit.
The proprietary liquid pool portion in unit comprises two inlets and two outlets (11) (12), and the former is unit middle outlet (9) (10) extension, and the latter is led to shared liquid pool portion.Outlet (12) diameter is very little, and this outlet (12) just influences the liquid level of liquid pool portion (7) when apparatus of the present invention are cut off the power supply for a long time, is discharged in the shared liquid pool (3) by the big portion remaining liq in this outlet (12) unit.
Top outlet (11) plays a part a kind of device on function, this device can make the liquid in each unit remain on a kind of liquid level of minimum between atomization period, similar top together with other unit (not shown) exports together, can find out this effect more, the total public top overflow wall (13) of these similar top outlets.For the unit, this minimum fluid height is positioned at the height of outlet (11).This common upper overflow wall is around all atomization units or a part of unit in many atomization units.Therefore as long as the overflow condition occurs in some unit in these unit, just can be on shared liquid pool the atomization unit of all total common upper overflow wall of valid function.Not introducing new liq in the unit will cause the liquid in the liquid pool portion (7) to be back to the unit through outlet (10).
Claims (8)
1. ultrasonic device for atomizing liquids comprises: its at least one atomization unit (1) it is characterized in that the approximate ultrasonic transducer (2) up of orientation is configured in the bottom of each unit, and the top of each unit is open; Be connected in the liquid pool (3) of all unit; The device that in atomization period each unit of chien shih, keeps the minimum level height; Be connected in the power supply of each transducer; EGR is used to make liquid to flow out liquid pool (6), and each transducer of flowing through flows back to liquid pool then; Each atomization unit has lower part outlet (10) and the top outlet (9) that can remove sedimentation impurity respectively and swim impurity.
2. device as claimed in claim 1 is characterized in that, the operational frequency range of supplying with the power supply of transducer is more than 800kHz.
3. device as claimed in claim 1 is characterized in that, liquid pool is divided into two parts (7) and (3), makes any liquid that flows through liquid pool that flows out from the unit all flow through this two parts, and the feasible flow velocity that flows into the aforesaid liquid of various piece is different.
4. device as claimed in claim 1, it is characterized in that, keep the device of minimum fluid height to consist of a number in atomization period each unit of chien shih, these unit have the height of being proofreaied and correct by liquid pool, make the liquid level that keeps in the liquid pool form the predetermined level height in the unit, and the liquid level in the liquid pool is kept by inlet valve, this valve is controlled by liquid surface height sensor, thereby the reduction of liquid level will start the sensor in the liquid pool, this sensor makes above-mentioned valve open again, can add liquid make-up to liquid pool thus, until the liquid level that recovers above-mentioned liquid pool.
5. device as claimed in claim 1 is characterized in that the power supply that is connected in each transducer has the sensor that is connected in power supply, as long as just the sensor detects liquid level in the liquid pool is lower than predetermined altitude power supply is cut off automatically.
6. device as claimed in claim 1 is characterized in that the power supply that is connected in each transducer has the sensor that is connected in power supply, and when sensor detected liquid level in the liquid pool and tilts to exceed preset range, the sensor cut off above-mentioned power supply automatically.
7. device as claimed in claim 1, this device have 12～36 atomization units.
8. device as claimed in claim 1, this device has the inertia separate hydrocyclone, and this cyclone is used for separating the droplet of fog diameter greater than 5.0 μ m that produce, and this cyclone comprises: shared moist chambers, this moist chambers is contained in the top of all atomization units; Air pump is contained on the above-mentioned moist chambers, is used for continuously high-speed air being sent into and being sent above-mentioned moist chambers; Open vertical cylinder that occupy the top or cone, this cylinder or cone are connected in above-mentioned moist chambers, make that air and the fog in the above-mentioned moist chambers can tangentially enter in this cylinder or the cone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL121414 | 1997-07-28 | ||
| IL12141497A IL121414A (en) | 1997-07-28 | 1997-07-28 | Ultrasonic device for atomizing liquids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1265610A CN1265610A (en) | 2000-09-06 |
| CN1106890C true CN1106890C (en) | 2003-04-30 |
Family
ID=11070440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98807715A Expired - Fee Related CN1106890C (en) | 1997-07-28 | 1998-07-15 | Ultrasonic atimizing device with liquid circulating line |
Country Status (13)
| 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) |
| HK (1) | HK1028749A1 (en) |
| PT (1) | PT999899E (en) |
Families Citing this family (4)
| 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 |
| CN110756375B (en) * | 2019-11-01 | 2020-12-01 | 江南大学 | Double-layer continuous ultrasonic atomization grading device and grading method |
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 |
| EP0332740A2 (en) * | 1988-03-18 | 1989-09-20 | Ernst Hohnerlein | Process and device for applying a flux |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55124565A (en) * | 1979-03-20 | 1980-09-25 | Toshiba Corp | Ultrasonic atomizer |
-
1998
- 1998-07-15 PT PT98932495T patent/PT999899E/en unknown
- 1998-07-15 DE DE69803679T patent/DE69803679T2/en not_active Expired - Fee Related
- 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 KR KR10-2000-7000972A patent/KR100517404B1/en not_active IP Right Cessation
- 1998-07-15 EP EP98932495A patent/EP0999899B1/en not_active Expired - Lifetime
- 1998-07-15 DK DK98932495T patent/DK0999899T3/en active
- 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 ES ES98932495T patent/ES2170509T3/en not_active Expired - Lifetime
- 1998-07-15 AT AT98932495T patent/ATE212567T1/en not_active IP Right Cessation
- 1998-07-15 CN CN98807715A patent/CN1106890C/en not_active Expired - Fee Related
-
2000
- 2000-11-08 HK HK00107114A patent/HK1028749A1/en not_active IP Right Cessation
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 |
| EP0332740A2 (en) * | 1988-03-18 | 1989-09-20 | Ernst Hohnerlein | Process and device for applying a flux |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69803679D1 (en) | 2002-03-14 |
| EP0999899B1 (en) | 2002-01-30 |
| ES2170509T3 (en) | 2002-08-01 |
| HK1028749A1 (en) | 2001-03-02 |
| AU726589B2 (en) | 2000-11-09 |
| AU8239998A (en) | 1999-02-16 |
| EP0999899A1 (en) | 2000-05-17 |
| KR20010022393A (en) | 2001-03-15 |
| JP2001510731A (en) | 2001-08-07 |
| KR100517404B1 (en) | 2005-09-28 |
| BR9815894A (en) | 2001-01-16 |
| JP4065366B2 (en) | 2008-03-26 |
| DE69803679T2 (en) | 2002-06-13 |
| DK0999899T3 (en) | 2002-05-13 |
| ATE212567T1 (en) | 2002-02-15 |
| PT999899E (en) | 2002-05-31 |
| CA2297796C (en) | 2008-04-15 |
| CA2297796A1 (en) | 1999-02-04 |
| CN1265610A (en) | 2000-09-06 |
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