EP0479070A2 - Dispositif pour le montage d'un transducteur d'ultrason sur un bain de lavage - Google Patents
Dispositif pour le montage d'un transducteur d'ultrason sur un bain de lavage Download PDFInfo
- 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
Links
- 238000005406 washing Methods 0.000 title claims abstract description 30
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 230000005684 electric field Effects 0.000 claims abstract 2
- 238000003466 welding Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
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)
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 (fr) | 1992-04-08 |
EP0479070A3 EP0479070A3 (en) | 1992-04-15 |
EP0479070B1 EP0479070B1 (fr) | 1994-07-27 |
Family
ID=11187003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910116058 Expired - Lifetime EP0479070B1 (fr) | 1990-09-21 | 1991-09-20 | Dispositif pour le montage d'un transducteur d'ultrason sur un bain de lavage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0479070B1 (fr) |
DE (1) | DE69103113T2 (fr) |
ES (1) | ES2057698T3 (fr) |
IT (1) | IT220168Z2 (fr) |
Cited By (7)
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 (fr) * | 2000-06-15 | 2006-07-12 | Seiko Epson Corporation | Procédé de chargement de liquide, conteneur de liquide, et procédé de fabrication |
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 (fr) * | 2014-12-31 | 2016-07-07 | 简伟杰 | Sous-ensemble d'élément couvrant avant de transducteur ultrasonique de type sandwich et transducteur ultrasonique de type sandwich équipé dudit sous-ensemble |
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)
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)
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 (fr) * | 1988-05-10 | 1989-11-15 | Martin Walter Ultraschalltechnik GmbH | Dispositif à ultrasons |
-
1990
- 1990-09-21 IT IT2179990U patent/IT220168Z2/it active IP Right Grant
-
1991
- 1991-09-20 ES ES91116058T patent/ES2057698T3/es not_active Expired - Lifetime
- 1991-09-20 EP EP19910116058 patent/EP0479070B1/fr not_active Expired - Lifetime
- 1991-09-20 DE DE1991603113 patent/DE69103113T2/de not_active Expired - Fee Related
Patent Citations (7)
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 (fr) * | 1988-05-10 | 1989-11-15 | Martin Walter Ultraschalltechnik GmbH | Dispositif à ultrasons |
Cited By (8)
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 (fr) * | 2000-06-15 | 2006-07-12 | Seiko Epson Corporation | Procédé de chargement de liquide, conteneur de liquide, et procédé de fabrication |
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 (fr) * | 2014-12-31 | 2016-07-07 | 简伟杰 | Sous-ensemble d'élément couvrant avant de transducteur ultrasonique de type sandwich et transducteur ultrasonique de type sandwich équipé dudit sous-ensemble |
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 (fr) | 1994-07-27 |
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