EP1916037B1 - Flüssigkeitszerstäuber - Google Patents

Flüssigkeitszerstäuber Download PDF

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Publication number
EP1916037B1
EP1916037B1 EP20070004419 EP07004419A EP1916037B1 EP 1916037 B1 EP1916037 B1 EP 1916037B1 EP 20070004419 EP20070004419 EP 20070004419 EP 07004419 A EP07004419 A EP 07004419A EP 1916037 B1 EP1916037 B1 EP 1916037B1
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EP
European Patent Office
Prior art keywords
spray plate
liquid
hole
liquid atomizer
vibrating element
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.)
Active
Application number
EP20070004419
Other languages
English (en)
French (fr)
Other versions
EP1916037A2 (de
EP1916037A3 (de
Inventor
Liang-De Wang
Tai-Feng Wu
Yi-Cheng Chen
Yu-Ran Wang
Chien-Shien Yeh
Sheng-Chih Shen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrial Technology Research Institute ITRI
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Industrial Technology Research Institute ITRI
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Publication date
Application filed by Industrial Technology Research Institute ITRI filed Critical Industrial Technology Research Institute ITRI
Publication of EP1916037A2 publication Critical patent/EP1916037A2/de
Publication of EP1916037A3 publication Critical patent/EP1916037A3/de
Application granted granted Critical
Publication of EP1916037B1 publication Critical patent/EP1916037B1/de
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06Apparatus 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
    • B05B17/0607Apparatus 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
    • B05B17/0638Apparatus 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 by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • B05B17/0646Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto

Definitions

  • the present invention relates to a liquid atomizer, more particularly a kind of liquid atomizer capable of reducing noise, improving the service life of spray plate, preventing working frequency drift, and enhancing the atomization efficiency.
  • Liquid atomizer currently available on the market comes in pressure type and mechanical oscillation type.
  • the former atomizes liquid using pressure gradient and is able to atomize large amount of liquid.
  • pressure-type atomizer requires machine for pressurization, and generates greater noise.
  • medical atomizer only small amount of liquid needs to be atomized, but the size of droplet produced is an important consideration. Thus the medical application of pressure-type atomizer gradually loses its appeal.
  • Mechanical oscillation type atomizer has been the dominant type of medical atomizer in recent years that largely uses ultrasonic vibration generated by piezoelectric material to atomize liquid.
  • US 2006/0226253 entitled “Spraying Device” published October 12, 2006, discloses one such atomizer. But it also has the drawbacks of consuming too much power and requiring fans to direct the flow of droplet mist.
  • piezoelectric atomizers that use spray plate to generate droplet mist.
  • WO 2006/066671 entitled “Device for Atomizing a Product, Particularly a Perfume” published June 29, 2006, discloses one such piezoelectric atomizers.
  • the use of spray plate greatly reduces the consumption of electric energy and better controls the droplet sizes through the working of pore size.
  • Related patents or products of such atomizer can be generally categorized into two types: using the vibration of piezoelectric material to push the liquid through the spray holes to form mist, or using piezoelectric material to vibrate a spray plate causing it to push out the liquid, which turns into mist form after passing through the spray holes.
  • the former requires greater energy to drive the piezoelectric maternal in order to atomize the liquid and generate smaller droplets, and is less efficient as compared to the latter.
  • the latter contains spray plate, which is an active vibration component prone to fatigue.
  • Other problems associated with the latter type of piezoelectric atomizers include noise during liquidless air vibration, reduced service life of spray plate in case of large-area vibration, working frequency drift following air vibration, and low atomization efficiency.
  • the liquid atomizer 60 in a typical atomizing device that uses active vibration component includes a vibrating element 70 and a spray plate 80. As shown in Fig. 6 , the spray plate 80 vibrates under the driving of vibrating element 70 and generates squeeze pressure to push the liquid out of spray holes 81 and form droplet mist.
  • the entire spray plate would vibrate under the driving of vibrating element for it is adhered to the vibrating element. Because of increase in its vibration area, the spray plate tends to fatigue easily, and increase in the spray plate load reduces the atomization efficiency.
  • the object of the present invention is to provide a liquid atomizer that reduces noise.
  • Another object of the present invention is to provide a liquid atomizer that enhances the service life of spray plate.
  • a further object of the present invention is to provide a liquid atomizer that prevents the working frequency drift.
  • Yet another object of the present invention is to provide a liquid atomizer that improves atomization efficiency.
  • the present invention provides a liquid atomizer for atomizing liquid and applied in an atomizing device having an accommodating space and a through hole.
  • the liquid atomizer includes a vibrating element having a first hole corresponding to the through hole; a spray plate having a plurality of spraying holes corresponding to the first hole and being connected with the vibrating element; and a structure element having a second hole corresponding to the plurality of spraying holes of the spray plate and being connected with the spray plate so that the spray plate is secured between the vibrating element and the structure element.
  • the vibrating element, the spray plate and the structure element are assembled in the accommodating space of the atomizing device. Under the vibration energy generated by the vibrating element, liquids are atomized via the spraying holes of spray plate.
  • the present invention provides another liquid atomizer for atomizing liquid and applied in an atomizing device having an accommodating space and a through hole.
  • the liquid atomizer includes a vibrating element having an elastic body and a first hole corresponding to the through hole; a spray plate having a plurality of spraying holes corresponding to the first hole and being connected with the vibrating element so that the elastic body is disposed between the vibrating element and the spray plate; and a structure element having a second hole corresponding to the plurality of spraying holes of the spray plate and being connected with the spray plate so that the spray plate is disposed between the vibrating element and the structure element.
  • the vibrating element, the spray plate and the structure element are assembled in the accommodating space of the atomizing device. Under the vibration energy generated by the vibrating element, liquids are atomized via the spraying holes of the spray plate.
  • the liquid atomizer can further include an inlet for the injection of liquid to be atomized into a cavity.
  • the vibrating element is a piezoelectric plate.
  • the structure element is made of plastic material.
  • the elastic body is made of plastic material.
  • the spray plate is secured between the vibrating element and the structure element with adhesive.
  • the vibrating element is configured with a first hole corresponding to the through hole.
  • the spray plate is configured with a plurality of spraying holes corresponding to the first hole.
  • the structure element is configured with a second hole corresponding to the plurality of spraying hole. The diameter of the second hole is smaller than that of the first hole.
  • the second hole is in one of shapes of bowl, fillet or chamfer.
  • Fig. 1 shows the exploded perspective view of a liquid atomizer of the present invention applied in an atomizing device.
  • the liquid atomizer 20 of the present invention comprises a vibrating element 30, a spray plate 40, and a structure element 50.
  • the atomizing device includes a body 10 having a cavity 11 for storing liquid to be atomized (not shown in the figure) and an accommodating space 12 and a through hole 13 provided on one side of the body 10.
  • the liquid atomizer 20 is disposed inside the accommodating space 12 of body 10.
  • the body 10 further includes an inlet 14 for the injection of liquid to be atomized into the cavity 11.
  • the inlet 14 can be connected to the source of continuous liquid supply for atomizing device 100 to work for long period of time.
  • the space of cavity 11 can be adjusted according to needs for storing the liquid to be atomized.
  • the atomizing device 100 can be used as a detached device in medical application for patients to carry around.
  • the vibrating element 30 is configured with a first hole 31 corresponding to the through hole 13.
  • the vibrating element 30 is a piezoelectric material for providing vibration energy.
  • the spray plate 40 is configured with a plurality of spraying holes 41 corresponding to the first hole 31 and connected with the vibrating element 30.
  • the structure element 50 is configured with a second hole 51 corresponding to the plurality of spraying holes 41 of the spray plate 40 and connected with the spray plate 40 so that the spray plate 40 is secured between the vibrating element 30 and structure element 50.
  • the assembled vibrating element 30, spray plate 40 and structure element 50 are disposed in the accommodating space 12 of body 10. Under the vibration energy generated by the vibrating element 30, liquids are atomized via the spraying holes 41 of spray plate 40.
  • the structure element 50 is made of plastic material.
  • Fig. 2 is the side sectional view of a liquid atomizer applied in an atomizing device according to the present invention.
  • the liquid atomizer 20 is secured in the accommodating space 12 of body 10, while spray plate 40 is secured between vibrating element 30 and structure element 50 with adhesive.
  • the diameter of the first hole 31 of vibrating element 30 is bigger than that of the second hole 51 of structure element 50, so that when liquid atomizer 20 works, the vibration area of spray plate 40 is reduced and the atomization area is confined to the center portion where vibration amplitude is the biggest.
  • vibration of the spray plate 40 in unnecessary area is effectively eliminated, and the load of spray plate 40 is reduced, thereby prolonging its service life.
  • vibration energy is confined to the center of spray plate 40, unnecessary energy consumption is reduced, thereby achieving the object of enhancement.
  • liquid to be atomized is first injected into the cavity 11 of body 10 via the inlet 14 and flows through the through hole 13 of body 10 into the liquid atomizer 20, and then through the first hole 31 of vibrating element 30 to the spray plate 40.
  • the vibration energy generated by the vibrating element 30 drives the spray plate 40 to vibrate, which produces squeeze pressure on liquid and forces it out of the spray holes 41 to form mist.
  • Figs 3A - 3C are embodiments of the structure element of liquid atomizer according to the present invention.
  • the second hole 51 of structure element 50 tapers in correspondence to the spray plate 40 to produce a diffusional atomization effect.
  • the second hole 51 of structure element 50 tapers in a bowel, fillet or chamfer shape as shown in Fig. 3A, Fig. 3B and Fig. 3C respectively.
  • Fig. 4A shows the recovery waveform of a liquid atomizer following air vibration according to the present invention.
  • Fig. 4B shows the recovery waveform of a conventional liquid atomizer following air vibration.
  • the liquid atomizer according to the present invention has a structure element to secure the spray plate, thereby stabilizing the vibration frequency, reducing the occasion of low-frequency vibration and reducing the generation of noise. This feature is important for liquid atomizer used in medical applications, for it can help sooth the mood of patient and improve the therapeutic effect.
  • the liquid atomizer according to the invention has better recovery curve.
  • the vibration frequency of liquid atomizer of the invention does not exhibit drift with the addition of liquid after it vibrates in air for a period of time.
  • its atomization rate reverts back to the initial state almost instantaneously.
  • the working frequency of conventional liquid atomizer would recover slowly when liquid is added after it vibrates in air for a period of time.
  • the working frequency drift results in slowdown of atomization rate.
  • the liquid atomizer of the invention helps improve the quality of atomizing device significantly as it is not necessary to adjust the working frequency each time the device is in use, making the use of atomizing device more convenient.
  • Fig. 5 is the side sectional view of a liquid atomizer applied in an atomizing device according to another embodiment of the present invention. Elements in this embodiment identical or similar to those of the embodiment in Fig. 1 are expressed by identical or similar symbols and detailed descriptions are omitted to render the description of the present invention clearer and easily comprehensible.
  • the liquid atomizer 20 in this embodiment has basically the same elements as the liquid atomizer presented in Fig. 1 .
  • the main difference is that vibrating element 30 of liquid atomizer 20 here has an elastic body 60, which is disposed between the vibrating element 30 and spray plate 40.
  • the elastic body 60 works to buffer the oscillating force present between vibrating element 30 and spray plate 40.
  • elastic body is made of plastic material.
  • the liquid atomizer of the present invention can confine the vibration area of spray plate when it is in action, so that the vibration of peripheral area that does not aid the atomization can be stopped and energy can be concentrated in the center area. As such, atomization rate is increased and more energy is saved.
  • the spray plate of the present invention has stronger structure so that its periphery will not become detached from a structure it is adhered to after repeated vibration, which also addresses the liquid seepage problem. Furthermore, less area of the spray plate is subject to fatigue effect, and breakage of spray plate during air vibration is less likely to occur, thereby prolonging its service life.

Landscapes

  • Special Spraying Apparatus (AREA)
  • Nozzles (AREA)

Claims (8)

  1. Ein Flüssigkeits-Zerstäuber (20) zum Zerstäuben von Flüssigkeit, angewendet in einer Zerstäubervorrichtung (100) mit einem Durchgangsloch (13), umfassend:
    ein Vibrationselement (30) mit einem mit dem Durchgangsloch (13) korrespondierenden ersten Loch (31);
    eine mit dem Vibrationselement (30) verbundene Sprühplatte (40) mit einer Vielzahl von mit dem ersten Loch (31) korrespondierenden Sprühlöchern (41); und
    ein mit der Sprühplatte (40) verbundenes Strukturelement (50) mit einem mit der Vielzahl der Sprühlöcher (41) der Sprühplatte (40) korrespondierenden zweiten Loch (51), so dass die Sprühplatte zwischen dem Vibrationselement (30) und dem Strukturelement (50) gesichert ist; das Vibrationselement (30), die Sprühplatte (40) und das Strukturelement (50) sind in einem Aufnahmebereich (12) der Zerstäubervorrichtung (100) angeordnet, um Flüssigkeit mittels der Sprühlöcher (41) der Sprühplatte (40) zu zerstäuben,
    dadurch gekennzeichnet, dass sich das zweite Loch (51) des Strukturelements (50) in Übereinstimmung mit der Sprühplatte (40) verjüngt, um einen Diffusionszerstäubungseffekt zu erzeugen, und wobei sich das zweite Loch (51) des Strukturelements (50) in Form einer Schüssel, einer Ausrundung oder einer Abkantung verjüngt.
  2. Flüssigkeits-Zerstäuber nach Anspruch 1, dadurch gekennzeichnet, dass die Zerstäubervorrichtung (100) weiter eine Aussparung (11) zur Bevorratung von zu zerstäubender Flüssigkeit und einen Einlass zum Einbringen von zu zerstäubender Flüssigkeit in die Aussparung (11) beinhaltet.
  3. Flüssigkeits-Zerstäuber nach Anspruch 1, dadurch gekennzeichnet, dass das Vibrationselement (30) eine piezoelektrische Platte ist.
  4. Flüssigkeits-Zerstäuber nach Anspruch 1, dadurch gekennzeichnet, dass das Strukturelement (50) aus Kunststoff-Material gemacht ist.
  5. Flüssigkeits-Zerstäuber nach Anspruch 1, dadurch gekennzeichnet, dass die Sprühplatte (40) zwischen dem Vibrationselement (30) und dem Strukturelement (50) mittels eines Klebemittels gesichert ist.
  6. Flüssigkeits-Zerstäuber nach Anspruch 1, dadurch gekennzeichnet, dass der Durchmesser des zweiten Lochs (51) kleiner als der des ersten Lochs (31) ist.
  7. Flüssigkeits-Zerstäuber nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Vibrationselement (30) einen elastischen Körper (60) hat und mit der Sprühplatte (40) derart verbunden ist, dass der elastische Körper (60) zwischen dem Vibrationselement (30) und der Sprühplatte (40) angeordnet ist.
  8. Flüssigkeits-Zerstäuber nach Anspruch 7, dadurch gekennzeichnet, dass die Zerstäubervorrichtung (100) weiter eine Aussparung (11) zur Bevorratung von zu zerstäubenden Flüssigkeit und einen Einlass zum Einbringen von zu zerstäubender Flüssigkeit in die Aussparung (11) beinhaltet.
EP20070004419 2006-10-25 2007-03-03 Flüssigkeitszerstäuber Active EP1916037B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006101375556A CN101168148A (zh) 2006-10-25 2006-10-25 水雾产生器

Publications (3)

Publication Number Publication Date
EP1916037A2 EP1916037A2 (de) 2008-04-30
EP1916037A3 EP1916037A3 (de) 2008-09-10
EP1916037B1 true EP1916037B1 (de) 2012-11-14

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ID=38320772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070004419 Active EP1916037B1 (de) 2006-10-25 2007-03-03 Flüssigkeitszerstäuber

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EP (1) EP1916037B1 (de)
CN (1) CN101168148A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2987564B1 (fr) * 2012-03-02 2014-04-04 Seb Sa Dispositif de rafraichissement portable
TWI549757B (zh) * 2013-02-19 2016-09-21 Microbase Technology Corp 具幾何立體噴孔片之液體霧化模組
CN106583140B (zh) * 2017-01-23 2022-08-26 佛山市科日压电器件有限公司 微孔雾化片安装头
CN106935164B (zh) * 2017-05-10 2019-05-24 深圳瑞捷工程咨询股份有限公司 Vr建筑搭建指导系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2879482B1 (fr) * 2004-12-20 2007-03-30 Oreal Dispositif de pulverisation d'un produit, notamment d'un parfum
TWI268179B (en) * 2005-04-12 2006-12-11 Ind Tech Res Inst Improved structure of atomizing nozzle the plate can be vibrated by the vibrator element to compress the fluid, so that the fluid is jet from the perforations in form of tiny particle

Also Published As

Publication number Publication date
EP1916037A2 (de) 2008-04-30
EP1916037A3 (de) 2008-09-10
CN101168148A (zh) 2008-04-30

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