EP0479070A2 - Vorrichtung zum Montieren eines Ultraschallwandlers auf einen Waschkasten - Google Patents

Vorrichtung zum Montieren eines Ultraschallwandlers auf einen Waschkasten Download PDF

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Publication number
EP0479070A2
EP0479070A2 EP91116058A EP91116058A EP0479070A2 EP 0479070 A2 EP0479070 A2 EP 0479070A2 EP 91116058 A EP91116058 A EP 91116058A EP 91116058 A EP91116058 A EP 91116058A EP 0479070 A2 EP0479070 A2 EP 0479070A2
Authority
EP
European Patent Office
Prior art keywords
wall plate
washing tank
resonance
disks
pair
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.)
Granted
Application number
EP91116058A
Other languages
English (en)
French (fr)
Other versions
EP0479070A3 (en
EP0479070B1 (de
Inventor
Ettore Alagna
Giuseppe Marolda
Daniel Guerinat
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0479070A2 publication Critical patent/EP0479070A2/de
Publication of EP0479070A3 publication Critical patent/EP0479070A3/en
Application granted granted Critical
Publication of EP0479070B1 publication Critical patent/EP0479070B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
    • B06B1/0618—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile of piezo- and non-piezoelectric elements, e.g. 'Tonpilz'

Definitions

  • the ultrasound transducers used for this purpose fundamentally comprise a pair of piezoelectric ceramic side-by-side disks, and two metallic resonance bodies applied on the opposite sides of said pair of disks.
  • An electrically conductive lamina is interposed between the two disks; an oscillating electric potential, produced by an electronic oscillator, is applied between said lamina and the two metallic resonance bodies - possibly with the interposition of two further conductive laminae between each disk and the metallic resonance body adjacent thereto - said oscillating electric potential being and apt to cause in the disks, due to their piezoelectric nature, a vibration phenomenon which is transmitted to the metallic resonance bodies.
  • the oscillation frequency is determined by said electronic oscillator circuit at a preset value, included in the ultrasound field, for instance between 20 and 40 KHz, and the dimension and shape of the metal bodies is determined so that they may resonate at that frequency.
  • one of the two resonance bodies is normally applied against the wall of the washing tank and is fixed onto said wall by glueing, as shown in figure 1.
  • the wall which is of thin plate, thus vibrates together with the resonance body of the transducer and transmits the vibration to the washing liquid.
  • EP-A2-0.341.505 provides moreover for a support ring being fixedly connected, on one hand, to one of the resonance bodies of the transducer - and precisely, to a frustoconical body projecting into the washing tank and acting as ultrasound emitter - and on the other hand, to the wall of the washing tank.
  • Said support ring is, on one side, formed in one piece with the resonance body or else welded on said body and, on the other side, it is welded onto the wall of the washing tank (see diagram of figure 3).
  • EP-A2-0.341.505 has the advantage - in respect of the previous one in which the resonance body is directly welded onto the wall of the washing tank - that the support ring facilitates mounting as well as welding and, at the same time, it forms an element apt to damp the vibrations transmitted from the transducer to the wall; nevertheless, it simply reduces the probabilities of breakage without definitively solving the problem.
  • the object of the present invention is to realize an arrangement for mounting an ultrasound transducer onto the wall plate of a washing tank, which is apt to fully eliminate the above mentioned drawbacks, which is easy to assemble and which is very reliable in the long run.
  • This result is obtained - in a mounting arrangement according to the introductory part of Claim 1 - thanks to the fact that the wall plate of the washing tank is provided with a hole of diameter substantially corresponding to that of the bolt, that this latter crosses in succession, starting from the external part, a first resonance body and the pair of piezoelectric disks mounted on the outer side of said wall plate, then the hole in the wall plate, and finally screws into a threaded dead hole formed in the second resonance body mounted on the inner side of said wall plate, and that a sealing ring gasket is interposed between said second resonance body and the inner surface of said wall plate.
  • An additional characteristic of the present invention lies moreover in the fact that the shape of the resonance bodies is planned and determined so that the ultrasonic frequency mechanical oscillations - of maximum amplitude in correspondence of the ends of the resonance bodies, particularly in correspondence of the free surface of the body on the inner side of the washing tank - have a flow such that, as their amplitude reduces towards the innermost transversal sections, they result of no amplitude at all just in correspondence of the section coinciding with the wall plate of the washing tank.
  • the piezoelectric disks and the resonance bodies oscillate in contraposition, leaving the central position - namely the position of connection to the wall plate of the washing tank - in still conditions.
  • the ultrasound transducer used in the arrangement according to the invention is formed - in a substantially known manner - of a pair of side-by-side piezoelectric ceramic disks 2 and 3, and of a pair of metallic resonance bodies 4 and 5.
  • a lamina 6 of electrically conductive material is interposed between the disks 2 and 3, while two further conductive laminae 7 and 8 are interposed between the disks 2, 3, and the resonance bodies 4, 5, positioned at the respective sides of said disks.
  • the body 4 has an axial threaded dead hole 4a, and the body 5 has an axial through hole 5a; also the disks 2 and 3 have central holes, equally as the laminae 6, 7 and 8. Said holes are crossed by a bolt 9, the threaded end 9a of which screws into the dead hole 4a of the body 4, and which is apt to lock all these pieces together.
  • the lateral wall plate 1 of the washing tank is provided with a hole, which is just sufficient to allow the passage of the bolt 9.
  • mount the transducer one therefore proceeds by mounting the resonance body 4 against the inner surface of the wall plate 1, while the disks 2, 3, and the body 5 are mounted externally to said wall plate; the bolt 9 is then introduced through the hole 5a and into the axial holes of the disks 2, 3, as well as into the hole of the wall plate 1, and is then thoroughly screwed into the threaded hole 4a.
  • a circular groove is formed on the surface of the body 4 mounted against the inner surface of the wall plate 1, said groove housing a sealing gasket 10, of the O-ring type, apt to also perform a vibration damping action.
  • the excitation of the disks 2 and 3 is carried out in phase contraposition - thanks to a proper adjustment of the feed voltage of the laminae 6, 7, 8 - and on the other hand the size and shape of the resonance bodies 4 and 5 is determined in such a way that the central, nodal, vibration plane coincides with the contact surface between the body 4 and the disk 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transducers For Ultrasonic Waves (AREA)
EP19910116058 1990-09-21 1991-09-20 Vorrichtung zum Montieren eines Ultraschallwandlers auf einen Waschkasten Expired - Lifetime EP0479070B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2179990U 1990-09-21
IT2179990U IT220168Z2 (it) 1990-09-21 1990-09-21 Disposizione di montaggio di un trasduttore di ultrasuoni su di una vasca di lavaggio.

Publications (3)

Publication Number Publication Date
EP0479070A2 true EP0479070A2 (de) 1992-04-08
EP0479070A3 EP0479070A3 (en) 1992-04-15
EP0479070B1 EP0479070B1 (de) 1994-07-27

Family

ID=11187003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910116058 Expired - Lifetime EP0479070B1 (de) 1990-09-21 1991-09-20 Vorrichtung zum Montieren eines Ultraschallwandlers auf einen Waschkasten

Country Status (4)

Country Link
EP (1) EP0479070B1 (de)
DE (1) DE69103113T2 (de)
ES (1) ES2057698T3 (de)
IT (1) IT220168Z2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2110341A1 (es) * 1994-09-16 1998-02-01 Consejo Superior Investigacion Sistema ultrasonico para lavado de textiles.
EP1679196A1 (de) * 2000-06-15 2006-07-12 Seiko Epson Corporation Verfahren zur Flüssigkeitszufuhr, Flüssigkeitsbehälter und Verfahren zu seiner Herstellung
CN103041977A (zh) * 2012-12-28 2013-04-17 刘细宝 水密封装型超声清洗换能器
CN103230866A (zh) * 2013-04-11 2013-08-07 镇江畅信超声电子有限公司 一种超声换能器及其制备工艺
CN103331251A (zh) * 2013-06-04 2013-10-02 常州大学 一种在强酸性环境中使用的超声波换能器
WO2016107521A1 (zh) * 2014-12-31 2016-07-07 简伟杰 一种夹心式超声波换能器前盖板组件及装有该组件的夹心式超声波换能器
CN109277364A (zh) * 2018-09-07 2019-01-29 杭州瑞利科技有限公司 一种球冠型嵌入式超声换能器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113663897B (zh) * 2021-07-21 2022-09-09 陕西师范大学 矩形通孔前盖板宽频带纵振换能器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1447064A (fr) * 1965-02-05 1966-07-22 Blackstone Corp Transducteurs à ultra-sons
GB1044879A (en) * 1964-07-18 1966-10-05 Ultrasonics Ltd Transducer mounting
FR1516218A (fr) * 1967-01-19 1968-03-08 Piezo Ceram Electronique Montage piézoélectrique perfectionné
US3524085A (en) * 1968-05-09 1970-08-11 Branson Instr Sonic transducer
US3772538A (en) * 1973-01-08 1973-11-13 Kane Corp Du Center bolt type acoustic transducer
DE2809820A1 (de) * 1977-03-07 1978-09-21 Toyoda Chuo Kenkyusho Kk Ultraschallwandler
EP0341505A2 (de) * 1988-05-10 1989-11-15 Martin Walter Ultraschalltechnik GmbH Ultraschall-Vorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1044879A (en) * 1964-07-18 1966-10-05 Ultrasonics Ltd Transducer mounting
FR1447064A (fr) * 1965-02-05 1966-07-22 Blackstone Corp Transducteurs à ultra-sons
FR1516218A (fr) * 1967-01-19 1968-03-08 Piezo Ceram Electronique Montage piézoélectrique perfectionné
US3524085A (en) * 1968-05-09 1970-08-11 Branson Instr Sonic transducer
US3772538A (en) * 1973-01-08 1973-11-13 Kane Corp Du Center bolt type acoustic transducer
DE2809820A1 (de) * 1977-03-07 1978-09-21 Toyoda Chuo Kenkyusho Kk Ultraschallwandler
EP0341505A2 (de) * 1988-05-10 1989-11-15 Martin Walter Ultraschalltechnik GmbH Ultraschall-Vorrichtung

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2110341A1 (es) * 1994-09-16 1998-02-01 Consejo Superior Investigacion Sistema ultrasonico para lavado de textiles.
EP1679196A1 (de) * 2000-06-15 2006-07-12 Seiko Epson Corporation Verfahren zur Flüssigkeitszufuhr, Flüssigkeitsbehälter und Verfahren zu seiner Herstellung
US7156506B2 (en) * 2000-06-15 2007-01-02 Seiko Epson Corporation Liquid charging method, liquid container, and method for manufacturing the same
CN103041977A (zh) * 2012-12-28 2013-04-17 刘细宝 水密封装型超声清洗换能器
CN103230866A (zh) * 2013-04-11 2013-08-07 镇江畅信超声电子有限公司 一种超声换能器及其制备工艺
CN103331251A (zh) * 2013-06-04 2013-10-02 常州大学 一种在强酸性环境中使用的超声波换能器
WO2016107521A1 (zh) * 2014-12-31 2016-07-07 简伟杰 一种夹心式超声波换能器前盖板组件及装有该组件的夹心式超声波换能器
CN109277364A (zh) * 2018-09-07 2019-01-29 杭州瑞利科技有限公司 一种球冠型嵌入式超声换能器

Also Published As

Publication number Publication date
DE69103113T2 (de) 1994-12-08
ES2057698T3 (es) 1994-10-16
IT9021799V0 (it) 1990-09-21
IT220168Z2 (it) 1993-06-24
EP0479070A3 (en) 1992-04-15
DE69103113D1 (de) 1994-09-01
IT9021799U1 (it) 1992-03-21
EP0479070B1 (de) 1994-07-27

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