CN101773894B - Phase-controlled ultrasonic wave atomizing nozzle - Google Patents
Phase-controlled ultrasonic wave atomizing nozzle Download PDFInfo
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- CN101773894B CN101773894B CN201010122838XA CN201010122838A CN101773894B CN 101773894 B CN101773894 B CN 101773894B CN 201010122838X A CN201010122838X A CN 201010122838XA CN 201010122838 A CN201010122838 A CN 201010122838A CN 101773894 B CN101773894 B CN 101773894B
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Abstract
The invention relates to a phase-controlled ultrasonic wave atomizing nozzle, comprising a front cover, an end cover and a phase-controlled high frequency ultrasonic transducer array; wherein the phase-controlled high frequency ultrasonic transducer array comprises a supporting piece, a plurality of array elements and a phase-controlled exciting bank for driving the array elements; the element array is distributed with a plurality of holes, each hole is provided with an array element, the array elements are distributed at equal interval in a ring-array manner, the supported embedded with array elements, the front cover and the end cover form a sandwich structure, a top end of an amplitude transformer is a liquid atomization surface, the liquid to be atomized passes through a central channel to reach the liquid atomization surface. As the phase-controlled ultrasonic transducer array scheme is adopted, size of a single array element piezoelectric piece is reduced, so that relatively high ultrasonic atomization frequency can be provided; and based on the same amplitude transformer structure, amplitude of the atomization surface can meet atomization requirements on liquid with relatively large viscosity and atomization degree of liquid drop can be improved.
Description
Technical field
The present invention relates to a kind of atomizer of liquid medium, particularly relate to the ultrasonic atomizing nozzle that a kind of phased transducer arrays that is used for big viscous liquid activates, belong to atomization of liquid field.
Background technology
Spraying is that liquid is passed through nozzle ejection in gas medium, makes it to disperse and be broken into the process of granule drop.Because liquid phase is for the high-speed motion of air or gas, perhaps since mechanical energy apply rotation or the vibration with injection apparatus, liquid can be atomized into the fine particle of various sizes scope.
Since eighties of last century end of the eighties, the beginning of the nineties, ultrasonic atomizatio causes people's attention gradually as a novel atomization technique.When atomization surface that flow of liquid activates through ultrasonic transduction, will form the wavy fluid film of one deck at atomization surface, along with the increase of vibration amplitude, the liquid surface wave amplitude also increases.When liquid film surface wave amplitude increased to certain value, the top of liquid surface wave will become unstable and break, and sprayed from atomization surface to throw away a large amount of tiny vaporific drops.Because ultrasonic atomizatio can obtain splendid atomization quality under very low liquid transmission speed, The droplet sizes is tiny evenly, and atomizing effect is controlled easily, so in every field general application is arranged.At present, the ultrasonic atomizatio technology has been widely used in aspects such as air wetting, medicament nebulae inhalation, semiconductor etching, electronic product salt spray test and spectrum analysis.
Ultrasonic nozzle shown in the U.S. Pat 4978067 is to obtain a kind of piezoelectric actuated ultrasonic atomizing nozzle widely applied at present; This nozzle is actually a resonance device; It is made up of a pair of piezoelectric disc that is clipped in the titanium shell, and atomization surface is positioned at nozzle exit.Two utmost points that the piezoelectric disc that compresses is imported as power supply, metal shell is as another utmost point.When the polarity at the two poles of the earth back and forth changed with high-frequency input signal, piezoelectric disc will vibrate with the frequency identical with input signal, and the pressure waves that vibration produces to propagation, causes that nozzle-end takes place and the vibration of input signal same frequency along nozzle shaft.Designed nozzle length just in time equals the wavelength of a pressure wave, and pressure wave forms the standard wave pattern in the stack and the resonance that come back reflective build-up of pressure ripple of two end faces of nozzle.Because free-ended boundary condition restriction, crest is positioned at two ends of nozzle.The size of resonance amplitude is relevant with the diameter of cover plate, because the diameter of nozzle exit end protecgulum diminishes, thereby the amplitude of resonance is exaggerated, and port of export amplitude is far longer than the arrival end amplitude, and the amplitude of increase equates with the variation of nozzle diameter.
Along with frequency of ultrasonic is high more, the yardstick of atomized drop is also thin more.Low-viscosity (mobile) liquid average atomizing yardstick under 20KHz is 90 microns, and the average atomizing yardstick is 30 microns under 90KHz.For the big more liquid of viscosity, viscous drag is big more, and surface tension is generally also big more, and the liquid ultrasonic atomizatio must provide enough amplitudes to make liquid under the effect of surface wave on the basis that forms the good fluid film, is broken into tiny vaporific drop.Yet supersonic frequency is high more, and the size of corresponding piezoelectric chip is more little, and the amplitude of atomization surface is also corresponding thereupon reduces, and therefore, the liquid viscosity that can atomize also can be more little.The nozzle of similar patent US4978067 structure, operating frequency 100KHz, to desirable atomizing effect, the liquid viscosity value can not surpass 60 centipoises, and solid matter content should be lower than 30%.
The technical problem that (one) will solve
The object of the invention is to the deficiency of prior art; A kind of ultrasonic atomizing nozzle that can utilize surface wave atomization mechanism is provided; Adopt a control battle array high-frequency transducer array to activate, form bigger amplitude at the atomization surface place, the liquid-sheet atomization of atomization surface is become meticulous drop; For the bigger drop of viscosity, also can atomize preferably.
(2) technical scheme
For realizing above-mentioned purpose; Technical scheme of the present invention is to adopt a kind of phase-controlled ultrasonic wave atomizing nozzle; Comprise: cylindrical protecgulum, bonnet and phased high-frequency transducer array, said phased high-frequency transducer array comprise a support member, some array element of the same size and are used to drive the phased exciting bank of said array element, be distributed with some holes on the said support member; Be provided with a said array element in the hole; And a ring battle array mode distributes all array elements to divide into groups equidistantly, and the support member that is inlaid with array element is clamped between said protecgulum and the bonnet through the screwed pipe and the bonnet of protecgulum rear side, and the front end of said protecgulum has been the horn of amplitude amplification; The tip of horn is atomization of liquid surface, runs through to be covered with the centre gangway that supplies liquid to be atomized to pass before said.
Preferably, in said array element, array element distance is less than or equal to spacing between group in the group.
Preferably, be provided with the support member that screwed hole and the screwed pipe of protecgulum rear side are connected and are inlaid with array element to grip in the said bonnet.
Preferably, said array element comprises a pair of ring piezoelectric sheet with an input electrode sheet and become sandwich type structural, and said input electrode sheet is connected with phased exciting bank.
(3) beneficial effect
Compare with ultrasonic atomizing nozzle of the prior art, the present invention has reduced the size of single piezoelectric patches owing to adopted above-mentioned phase-controlled ultrasonic wave transducer array scheme; Higher ultrasonic atomizatio frequency can be provided, and based on same horn structure, the amplitude of atomization surface can satisfy the atomizing requirement of big viscous liquid; Improve the finer atomization degree of drop simultaneously, thereby can satisfy the requirement of various liquid uniform atomizing better, increased the accommodation of atomizing; And novel structure of the present invention is compact; Function admirable, work has broad application prospects flexibly.
Description of drawings
Fig. 1 is the section of structure of phase-controlled ultrasonic wave atomizing nozzle of the present invention;
Fig. 2 is the 3D entity sketch map of phase-controlled ultrasonic wave atomizing nozzle of the present invention;
Fig. 3 is the 3D entity structure sketch map of circular transducer array element cylindrical support member of the present invention;
Fig. 4 is the 3D structural representation of circular transducer array element cylindrical support member of the present invention.
Fig. 5 is the 3D structural representation of square support member of the present invention.
Among the figure: 1, protecgulum; 1a, horn; 1b, screwed pipe; 1c, centre gangway; 2, piezoelectric patches; 3, electrode slice; 4, support member; 4a, hole; 5, bonnet.
The specific embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Shown in Fig. 1 to 3, the support member 4 that the phased piezoelectric patches array atomizer of present embodiment comprises some array elements, is used to drive the phased exciting bank of each array element and is distributed with some hole 4a.
The place ahead of protecgulum 1 is horn 1a, and the diameter of this horn 1a runs through said horn 1a and protecgulum 1 and is provided with the centre gangway 1c that supplies liquid to be atomized to pass less than the diameter of protecgulum 1.The rear of protecgulum 1 is screwed pipe 1b, is provided with screwed hole in the bonnet 5, and screwed pipe 1b is connected and fixed with it.
The array element of present embodiment adopts planar rondure, sandwich type structural, and the diameter of each array element, thickness are all identical, and available PZT-8 piezoelectric ceramics is processed, and device outer surface gummed has matching layer.Array element comprises that a pair of ring piezoelectric sheet 2 is with an input electrode sheet 3 and become sandwich type structural.Wherein each array element is connected with a phased ultrasound exciting bank, and phased exciting bank makes the same-phase work simultaneously of each array element, activates ultrasonic amplitude transformer 1a jointly, makes it to produce the enough amplitudes that make the atomization of liquid at the most advanced and sophisticated to be atomized surperficial 1d place of horn 1a.
The horn part that plays the ultrasonic amplitude amplification on the protecgulum can be taper shape, index shape or notch cuttype as shown in Figure 1.
Each array element of present embodiment all is independent controlled, and the phase place that the phase place of adjusting driving signal has also just been regulated the array element surface vibration makes it same-phase work, activates atomization surface work jointly.
During work, the array element driving frequency equates therefore, high-frequency bigger amplitude vibration is arranged at the atomization surface place with ultrasonic nozzle higher order resonances frequency.Arrive the most advanced and sophisticated to be atomized surperficial 1d of horn 1a when liquid to be atomized passes centre gangway 1c, on this atomization surface, be atomized into meticulous drop.
More than support member 4 is illustrated for circular structure; But support member 4 of the present invention can also be for like Fig. 4, be square shown in 5, and hole 4a also can be for square, at this moment; Array element is that linear array is equidistantly arranged, its quantity can be selected the various supports part for use according to the characteristic requirements of atomized liquid.
In sum; The invention provides a kind of novel phased transducer arrays ultrasonic atomizing nozzle; This nozzle not only satisfies the uniform atomizing requirement of existing low-viscosity (mobile) liquid; Can satisfy simultaneously the atomizing requirement of the high frequency ultrasound of the liquid of viscosity greatly, form meticulous uniform atomizing drop, increase the accommodation of the atomization of liquid.
Claims (4)
1. phase-controlled ultrasonic wave atomizing nozzle; It comprises cylindrical protecgulum and bonnet; The front end of said protecgulum has been the horn of amplitude amplification, and the tip of horn is atomization of liquid surface, runs through said protecgulum and horn and is provided with the centre gangway that supplies liquid to be atomized to pass;
It is characterized in that said phase-controlled ultrasonic wave atomizing nozzle also comprises: phased high-frequency transducer array,
Said phased high-frequency transducer array comprises a support member, some array element of the same size and is used to drive the phased exciting bank of said array element, is distributed with some holes on the said support member,
Be provided with a said array element in the hole, and all array elements a ring battle array mode distributes to divide into groups equidistantly,
The support member that is inlaid with array element is clamped between said protecgulum and the bonnet through the screwed pipe and the bonnet of protecgulum rear side.
2. phase-controlled ultrasonic wave atomizing nozzle as claimed in claim 1 is characterized in that, in said array element, array element distance is less than or equal to spacing between group in the group.
3. phase-controlled ultrasonic wave atomizing nozzle as claimed in claim 1 is characterized in that, is provided with the support member that screwed hole and the screwed pipe of protecgulum rear side are connected and are inlaid with array element to grip in the said bonnet.
4. phase-controlled ultrasonic wave atomizing nozzle as claimed in claim 1 is characterized in that, said array element comprises a pair of ring piezoelectric sheet with an input electrode sheet and become sandwich type structural, and said input electrode sheet is connected with phased exciting bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122838XA CN101773894B (en) | 2010-03-11 | 2010-03-11 | Phase-controlled ultrasonic wave atomizing nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122838XA CN101773894B (en) | 2010-03-11 | 2010-03-11 | Phase-controlled ultrasonic wave atomizing nozzle |
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| Publication Number | Publication Date |
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| CN101773894A CN101773894A (en) | 2010-07-14 |
| CN101773894B true CN101773894B (en) | 2012-06-20 |
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| CN201010122838XA Expired - Fee Related CN101773894B (en) | 2010-03-11 | 2010-03-11 | Phase-controlled ultrasonic wave atomizing nozzle |
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Families Citing this family (11)
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| TWI548462B (en) * | 2012-05-30 | 2016-09-11 | 陳文賓 | Brush wheel type nebulizer |
| CN102861366B (en) * | 2012-09-13 | 2014-07-02 | 童自国 | Wound sterilizing and cleaning device for mixing ozone gas and liquid by applying ultrasonic technique |
| CN103212508A (en) * | 2013-04-11 | 2013-07-24 | 南京长辉机电科技有限公司 | Piezoelectric ultrasonic atomizer |
| CN105268589A (en) * | 2014-05-28 | 2016-01-27 | 闫冬 | Microporous atomizer and adjusting method of atomization amount thereof |
| CN104043527B (en) * | 2014-06-30 | 2017-05-24 | 山东大学 | Surface membrane coagulation technology and device for efficiently removing fire coal flying ash microspheres |
| CN108348698B (en) | 2015-10-30 | 2020-12-15 | 强生消费者公司 | Sterile aerosol atomization device |
| MX2018005333A (en) * | 2015-10-30 | 2018-05-17 | Johnson & Johnson Consumer Inc | Aseptic aerosol misting device. |
| RU2721063C2 (en) | 2015-10-30 | 2020-05-15 | Джонсон энд Джонсон Консьюмер Инк. | Single-dose aseptic aerosol mist projector |
| CN107803297A (en) * | 2017-11-16 | 2018-03-16 | 叶志徐 | A kind of integrated ultrasonic atomizing device |
| US11571222B2 (en) | 2017-11-21 | 2023-02-07 | Qingdao university of technology | Neurosurgical ultrasonic focusing assisted three-stage atomization cooling and postoperative wound film forming device |
| CN114100942B (en) * | 2021-12-30 | 2023-02-24 | 北京科技大学 | Ultrasonic atomizing nozzle for forming rectangular spraying section |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978067A (en) * | 1989-12-22 | 1990-12-18 | Sono-Tek Corporation | Unitary axial flow tube ultrasonic atomizer with enhanced sealing |
| CN1990063A (en) * | 2005-12-30 | 2007-07-04 | 重庆融海超声医学工程研究中心有限公司 | high-intensity focusing ultrasonic transducer array |
| CN101282792A (en) * | 2005-05-02 | 2008-10-08 | 香港功能陶瓷有限公司 | Piezoelectric fluid atomizer apparatuses and methods |
| CN201135950Y (en) * | 2007-12-25 | 2008-10-22 | 昆山攀特电陶科技有限公司 | Sandwich type piezoelectric ceramics ultrasound atomizer plate |
| CN101349014A (en) * | 2007-07-17 | 2009-01-21 | 中国科学院理化技术研究所 | Cooling-down air conditioner facing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100690282B1 (en) * | 2005-12-28 | 2007-03-12 | 한국생산기술연구원 | Ultrasonic nozzle for high frequency application |
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2010
- 2010-03-11 CN CN201010122838XA patent/CN101773894B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978067A (en) * | 1989-12-22 | 1990-12-18 | Sono-Tek Corporation | Unitary axial flow tube ultrasonic atomizer with enhanced sealing |
| CN101282792A (en) * | 2005-05-02 | 2008-10-08 | 香港功能陶瓷有限公司 | Piezoelectric fluid atomizer apparatuses and methods |
| CN1990063A (en) * | 2005-12-30 | 2007-07-04 | 重庆融海超声医学工程研究中心有限公司 | high-intensity focusing ultrasonic transducer array |
| CN101349014A (en) * | 2007-07-17 | 2009-01-21 | 中国科学院理化技术研究所 | Cooling-down air conditioner facing |
| CN201135950Y (en) * | 2007-12-25 | 2008-10-22 | 昆山攀特电陶科技有限公司 | Sandwich type piezoelectric ceramics ultrasound atomizer plate |
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| CN101773894A (en) | 2010-07-14 |
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