CN103182354A - Low voltage-driven ultrasonic atomization sheet - Google Patents
Low voltage-driven ultrasonic atomization sheet Download PDFInfo
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- CN103182354A CN103182354A CN201110454918XA CN201110454918A CN103182354A CN 103182354 A CN103182354 A CN 103182354A CN 201110454918X A CN201110454918X A CN 201110454918XA CN 201110454918 A CN201110454918 A CN 201110454918A CN 103182354 A CN103182354 A CN 103182354A
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Abstract
The invention discloses a low voltage-driven ultrasonic atomization sheet, and belongs to the field of ultrasonic. The low voltage-driven ultrasonic atomization sheet comprises piezoelectric layers and electrode layers, wherein two layers or more than two layers of piezoelectric layers are stacked together, the electrode layers are arranged between the surfaces of the piezoelectric layers and the piezoelectric layers, and are connected together at interval of one electrode layer, and the directions of polarization of every two adjacent piezoelectric layers are opposite. According to the low voltage-driven ultrasonic atomization sheet, the structure is simple, the problem that the driving voltage of the current ultrasonic atomization sheet is higher can be effectively solved, thus the dependence of ultrasonic humidifiers on mains supply is reduced, and the carry-on performance and the carry-on use of the ultrasonic humidifiers become possible.
Description
Technical field
A kind of low-voltage driving ultrasonic atomization of the present invention sheet belongs to art of ultrasound.
Background technology
Present existing ultrasonic atomization sheet is made up of a piezoelectric layer and two electrode layers, electrode layer is arranged on the two sides of piezoelectric layer, when being applied in the alternation driving voltage on the electrode layer, piezoelectric layer will produce distortion and vibration under the influence of voltage, send ultrasonic wave to the external world.The driving voltage that the ultrasonic atomization sheet of this structure needs generally between 70～110V, can't adopt the power supply of battery or USB power supply.Because the ultrasonic atomization sheet is the core component of ultrasound waves humidifier, therefore present ultrasonic humidifier must adopt mains-supplied, has influenced convenience and portability that ultrasonic humidifier uses.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art part, provide a kind of and can reduce driving voltage, with the ultrasonic atomization sheet of low voltage driving, thereby make ultrasonic humidifier can adopt battery or the power supply of USB power supply, increase convenience and portability that ultrasonic humidifier uses.
The objective of the invention is to reach by following measure, a kind of low-voltage driving ultrasonic atomization sheet comprises piezoelectric layer and electrode layer composition, two-layer or two-layer above piezoelectric laminated putting together, between piezoelectric layer surface and piezoelectric layer, electrode layer is arranged, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.Because the deformation rate of piezoelectric ceramics is relevant with the electric-field intensity on being applied to piezoelectric ceramics, and the electric-field intensity between two electrode layers of atomizing piece be applied to two voltages on the electrode layer and be directly proportional, and the distance between two electrode layers is inversely proportional to, therefore, in the thickness that reduces piezoelectric layer, can reduce the driving voltage of atomizing piece on year-on-year basis, and keep the deformation rate of piezoelectric layer thickness direction constant.Resonant frequency is the important parameter of ultrasonic atomization sheet, the size of this parameter and the integral thickness of atomizing piece are inversely proportional to, therefore, and when reducing ultrasonic atomization sheet driving voltage, constant for the resonant frequency that keeps atomizing piece, just need correspondingly increase the number of plies of ultrasonic atomization sheet piezoelectric layer.Such as, adopt double-deck ultrasonic atomization chip architecture, can make the driving voltage of atomizing piece reduce half.If adopt the ultrasonic atomization sheet of ten layers of structure, just can make driving voltage be reduced to 1/10th of former driving voltage.
When ultrasonic atomization sheet of the present invention applied driving voltage, the voltage swing on two adjacent piezoelectric layers was identical, and direction of an electric field is opposite.Because the distortion of piezoelectric layer is not only relevant with direction of an electric field, also relevant with the polarised direction of piezoelectric layer, therefore, produces expansion or the contraction distortion of thickness direction simultaneously in order to guarantee each piezoelectric layer, just need make the polarised direction of adjacent each layer of piezoelectric layer opposite.
Of the present inventionly can protective layer be set in upper surface or the upper and lower surface of ultrasonic atomization sheet, prevent oxide etch and the fouling of ultrasonic atomization sheet surface electrode.
Two-layer or two-layer above ultrasonic atomization sheet of the present invention is fitted on the substrate, thereby can also further reduce driving voltage when saving energy.Substrate can be metal material or nonmetallic materials, and it has only one side to be connected with the multilayer atomizing piece, and another side is free and do not have an electrode layer.In general, the thickness of substrate of the present invention is 0.3～3 times of ultrasonic atomization sheet thickness.
A kind of method of low-voltage driving ultrasonic atomization sheet, the ultrasonic atomization sheet comprises piezoelectric layer and electrode layer composition, two-layer or two-layer above piezoelectric laminated putting together, between piezoelectric layer surface and piezoelectric layer, electrode layer is arranged, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite, when the ultrasonic atomization sheet applies driving voltage, voltage swing on two adjacent piezoelectric layers is identical, and direction of an electric field is opposite.
The present invention is simple in structure, can effectively solve the ultrasonic atomization sheet to the driving voltage problem of higher, thereby reduces ultrasonic humidifier to the dependence of mains supply, make ultrasonic humidifier carry and use becomes possibility.
Description of drawings
Accompanying drawing 2 is structural representations of ultrasonic atomization sheet of the present invention.
Accompanying drawing 3 is embodiments of the invention structural representations.
Accompanying drawing 4 is embodiments of the invention structural representations.
Accompanying drawing 5 is embodiments of the invention structural representations.
Accompanying drawing 6 is embodiments of the invention structural representations.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Among the figure: piezoelectric layer 1, electrode layer 2, protective layer 3, metal substrate 4, non-metal base 5.
As shown in Figure 1, existing ultrasonic atomization sheet is made of a piezoelectric layer 1 and the electrode layer 2 that is positioned at the piezoelectric layer upper and lower surface.
As shown in Figure 2, a kind of low-voltage driving ultrasonic atomization of the present invention sheet is made up of four piezoelectric layers 1 and the electrode layer between piezoelectric layer surface and piezoelectric layer 2, four layers piezoelectric laminated putting together, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.
Shown in accompanying drawing 3, accompanying drawing 4, a kind of low-voltage driving ultrasonic atomization of the present invention sheet is made up of four piezoelectric layers 1 and the electrode layer between piezoelectric layer surface and piezoelectric layer 2, four layers piezoelectric laminated putting together, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.Increase protective layer 3 on the surface, can prevent metal anodes oxidize or the fouling on surface.
As shown in Figure 5, a kind of low-voltage driving ultrasonic atomization of the present invention sheet is made up of three piezoelectric layers 1 and the electrode layer between piezoelectric layer surface and piezoelectric layer 2, three layers piezoelectric laminated putting together, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.At end face metal substrate 4 is set, metal substrate can substitute this surface electrode layer, so no longer needs electrode layer between metal substrate and the piezoelectric layer that is attached thereto.
As shown in Figure 6, a kind of low-voltage driving ultrasonic atomization of the present invention sheet is made up of three piezoelectric layers 1 and the electrode layer between piezoelectric layer surface and piezoelectric layer 2, three layers piezoelectric laminated putting together, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.At end face non-metal base 5 is set, between non-metal base and the piezoelectric layer that is attached thereto electrode layer is arranged.Use metal or non-metal base can adjust the resonant frequency of ultrasonic atomization sheet, improve the distribution of atomizing piece vibrational energy simultaneously, also have an energy-conservation effect what reduce the atomizing piece driving voltage.
Claims (6)
1. low-voltage driving ultrasonic atomization sheet, comprise piezoelectric layer and electrode layer composition, it is characterized in that two-layer or two-layer above piezoelectric laminated putting together, between piezoelectric layer surface and piezoelectric layer, electrode layer is arranged, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite.
2. a kind of low-voltage driving ultrasonic atomization sheet according to claim 1 is characterized in that in upper surface or the upper and lower surface of ultrasonic atomization sheet protective layer being set.
3. a kind of low-voltage driving ultrasonic atomization sheet according to claim 1 is characterized in that two-layer or two-layer above ultrasonic atomization sheet is fitted on the substrate.
4. a kind of low-voltage driving ultrasonic atomization sheet according to claim 3 is characterized in that substrate is metal material or nonmetallic materials.
5. a kind of low-voltage driving ultrasonic atomization sheet according to claim 3, the thickness that it is characterized in that substrate is 0.3～3 times of ultrasonic atomization sheet thickness.
6. the method for a low-voltage driving ultrasonic atomization sheet, the ultrasonic atomization sheet comprises piezoelectric layer and electrode layer composition, two-layer or two-layer above piezoelectric laminated putting together, between piezoelectric layer surface and piezoelectric layer, electrode layer is arranged, electrode layer phase alternating floor links together, and the polarised direction of every adjacent two piezoelectric layers is opposite, when the ultrasonic atomization sheet applies driving voltage, voltage swing on two adjacent piezoelectric layers is identical, and direction of an electric field is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110454918XA CN103182354A (en) | 2011-12-30 | 2011-12-30 | Low voltage-driven ultrasonic atomization sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110454918XA CN103182354A (en) | 2011-12-30 | 2011-12-30 | Low voltage-driven ultrasonic atomization sheet |
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| CN103182354A true CN103182354A (en) | 2013-07-03 |
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| CN201110454918XA Pending CN103182354A (en) | 2011-12-30 | 2011-12-30 | Low voltage-driven ultrasonic atomization sheet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797286A (en) * | 2014-12-31 | 2016-07-27 | 上海形状记忆合金材料有限公司 | Ultrasonic assembly for mutually backward emission of multiple acoustic beams |
| CN107185766A (en) * | 2017-07-31 | 2017-09-22 | 苏州雾联医疗科技有限公司 | A kind of piezoelectric ceramics ultrasound atomizer plate |
| CN111318407A (en) * | 2020-04-21 | 2020-06-23 | 湖南嘉业达电子有限公司 | Novel piezoelectric ceramic atomizing sheet |
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| CN1270705A (en) * | 1997-09-30 | 2000-10-18 | 西门子公司 | Piezo-electric element |
| JP2007158056A (en) * | 2005-12-06 | 2007-06-21 | Seiko Instruments Inc | Piezoelectric element and electronic equipment using the same |
| KR100846052B1 (en) * | 2006-06-26 | 2008-07-11 | 재단법인서울대학교산학협력재단 | Multilayer Type 2-2 Piezo-Composite Ultrasonic Transducer and Method for the same |
| CN101288185A (en) * | 2005-08-19 | 2008-10-15 | 物理设备（Pi）两合公司 | Piezoelectric actuator for an ultrasonic motor |
| CN101490418A (en) * | 2006-07-11 | 2009-07-22 | 株式会社村田制作所 | Piezoelectric pump |
| US20090289526A1 (en) * | 2008-02-25 | 2009-11-26 | Resonance Semiconductor Corporation | Devices having a tunable acoustic path length and methods for making same |
| CN202419840U (en) * | 2011-12-30 | 2012-09-05 | 广州市番禺奥迪威电子有限公司 | Low-voltage driven ultrasonic atomization sheet |
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2011
- 2011-12-30 CN CN201110454918XA patent/CN103182354A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270705A (en) * | 1997-09-30 | 2000-10-18 | 西门子公司 | Piezo-electric element |
| CN101288185A (en) * | 2005-08-19 | 2008-10-15 | 物理设备（Pi）两合公司 | Piezoelectric actuator for an ultrasonic motor |
| JP2007158056A (en) * | 2005-12-06 | 2007-06-21 | Seiko Instruments Inc | Piezoelectric element and electronic equipment using the same |
| KR100846052B1 (en) * | 2006-06-26 | 2008-07-11 | 재단법인서울대학교산학협력재단 | Multilayer Type 2-2 Piezo-Composite Ultrasonic Transducer and Method for the same |
| CN101490418A (en) * | 2006-07-11 | 2009-07-22 | 株式会社村田制作所 | Piezoelectric pump |
| US20090289526A1 (en) * | 2008-02-25 | 2009-11-26 | Resonance Semiconductor Corporation | Devices having a tunable acoustic path length and methods for making same |
| CN202419840U (en) * | 2011-12-30 | 2012-09-05 | 广州市番禺奥迪威电子有限公司 | Low-voltage driven ultrasonic atomization sheet |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797286A (en) * | 2014-12-31 | 2016-07-27 | 上海形状记忆合金材料有限公司 | Ultrasonic assembly for mutually backward emission of multiple acoustic beams |
| CN105797286B (en) * | 2014-12-31 | 2019-02-22 | 上海形状记忆合金材料有限公司 | It is a kind of mutually to emit more acoustic beam ultrasonic assemblies backwards |
| CN107185766A (en) * | 2017-07-31 | 2017-09-22 | 苏州雾联医疗科技有限公司 | A kind of piezoelectric ceramics ultrasound atomizer plate |
| CN111318407A (en) * | 2020-04-21 | 2020-06-23 | 湖南嘉业达电子有限公司 | Novel piezoelectric ceramic atomizing sheet |
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Application publication date: 20130703 |