US3694675A - Cooled ultrasonic transducer - Google Patents
Cooled ultrasonic transducer Download PDFInfo
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- US3694675A US3694675A US118797A US3694675DA US3694675A US 3694675 A US3694675 A US 3694675A US 118797 A US118797 A US 118797A US 3694675D A US3694675D A US 3694675DA US 3694675 A US3694675 A US 3694675A
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- 239000013078 crystal Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims description 10
- 239000012809 cooling fluid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- 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'
-
- 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
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
Definitions
- a housing can 3 555 297 1/1971 Pierson ..310/8.3 surmund the transducer externally it with 2 831 295 4/1958 Weiss ..3 l0/8.2 x a
- the transducer can be mmmted 3:283:l82 11/1966 Jones et al. ..3 lO/8.7 husmg by a Perfmte Plate flange- 3,563,086 2/1971 Reed, Jr ..310/8.3 X 8 Chims, 3 Drawing Figures 3,495,104 2/1970 Burgo et al. ..3l0/8.3 X v v s PATENTEDSEP26 I972 3.694.675
- the present invention relates to a novel ultrasonic transducer construction having provision for improved cooling of the vibration producing elements.
- Ultrasonic transducers have been well known for a number, of years and have found extensive applications in industry for the welding of plastics and the like. The most commonly used ultrasonic transducers depend upon piezoelectric crystals for generating the desired vibrations when oscillating electrical currents are applied thereto. An example of such an ultrasonic transducer is described in U.S. Pat. No. 3,328,610. When transducers are used continuously, the crystals tend to become quite hot and it has been found necessary to cool them as by passing a flow of air around the outside of the transducer. While this is effective, I have found that substantial heat still tends to build up in the crystals and the efficiency of cooling should be improved if possible.
- the efficiency of cooling a centrally bolted ultrasonic transducer is improved by providing for the flow of cooling fluid, such as air, through passage means in a metal back mass to the interior of the transducer, and then forward through the interior in contact with the piezoelectric crystals to the front mass, from which the airis discharged to the outside through second passage means.
- cooling fluid such as air
- FIG. 1 is a vertical sectional view through a transducer apparatus embodying the novel cooling construction of the present invention
- FIG. 2 is a cross sectional view taken along the line 2-2 in FIG. 1;
- FIG. 3 is a cross sectional view taken along the line 3-3 in FIG; 1.
- a central retaining bolt 19 extends through axially aligned bolt holes 20 and 21 in the masses 11 and 13, respectively, and in the crystal means C, and is threaded at its end into the front mass 13.
- the head of bolt 19 bears against the top of back mass 1 l to hold all elements tightly together.
- the crystal means C comprises upper and lower piezoelectric crystals discs 23 and 25, and an intermediate electrically conductive metal spacer disc 27 to which conductor 28 is secured.
- Spacer 27 has opposite faces in intimate contact with the faces of the crystal discs, all three elements being annularly spaced from bolt 19 so that no electrical contact is made with the bolt.
- Discs 23 and 25 can be any desired piezoelectric crystal material, but the well known PZT crystal (lead-zirconate-titanate) is preferred.
- Bolt hole 20 is a cylindrical bore in its upper portion to fit tightly with the shank of bolt 19.
- a lower portion of bolt hole 20 is enlarged on opposite sides thereof at 22 and 24, thus having a generally oval cross sectional shape, to provide passages for cooling fluid.
- the wall at the minor axis of the oval engages the bolt 19, while the wall at the major axis is spaced from the bolt.
- Two oppositely extending radial bores or ducts 37 and 39 extend transversely from passages 22 and 24 to the outside of the transducer where they are connected to a pair of air supply conduits 41 and 43.
- Bolt hole 21 in front mass.
- the construction and arrangement is such that continuous passage means for conducting cooling fluid through the interior of the transducer is formed, comprising the radial passage means, the axially aligned bolt holes, and the central holes in crystal means C.
- continuous passage means for conducting cooling fluid through the interior of the transducer comprising the radial passage means, the axially aligned bolt holes, and the central holes in crystal means C.
- cylindrical counterbores can be used instead of using oval shapes.
- the oval shapes provide certain important advantages.
- the oval shape of portions of bolt holes 20 and 21 provides for rigidity and better support of all transducer elements, with less possibility of flexing and distortion, than when cylindrical counterbores are provided.
- a cylindrical counterbore in the front mass also would leave a longer length of the bolt free from contact with the interior,
- the transducer is supported by an external cylindrical housing 51 which surrounds the transducer T in annularly spaced relation thereto, and is connected thereto by a transversely extending support plate 53 constituting a part of front mass 13.
- Plate 53 has perforations 54 for the passage of fluid out of housing 51 and for interrupting the transmission of vibrations from the transducer to the cylindrical housing.
- Plate 53 is shown as a separate metal flange which is clamped between one end of crystal disc 25 and the rest of front mass 13, but it can also constitute an integral part of a unitary front mass.
- Plate 53 has a central aperture 55 therein to permit air to flow into passages 45 and 46. At its periphery, plate 53 is bolted or otherwise secured to housing 51. Cooling air is introduced into housing 51 through an inlet 57 and flows over the outside of the transducer and out through the apertures 54 in support plate 53.
- radial discharge passages 47 and 49 in the front mass 13 are located on the outside of housing 51, spaced from plate 53, so as to avoid mixing of the heated air from the interior of the transducer with the air circulating over the outside of the transducer.
- Ultrasonic apparatus comprising an ultrasonic transducer comprising, in combination,
- a metal back mass having a first longitudinal bolt hole
- a metal front mass having a second longitudinal bolt hole aligned with said first bolt hole
- annular piezoelectric responsive means sandwiched between said front and back masses, and having 4 central passagemeans therethrough aligned with said first and second bolt holesyand a central retaining bolt passing through said first bolt hole, through said central passage means in spaced relation to the wall thereof, and into said second bolt hole;
- said first and second bolt holes being enlarged transversely over only portions thereof adjacent said piezoelectric responsive means to space the walls thereof from said bolt;
- said apparatus also comprising a housing surrounding said transducer in annularly spaced relation thereto, and conduit means extending between the inside and the outside of said housing and connected into said first passage means in said back mass for supplying cooling fluid thereto.
- said first and second passage means being a plurality of radial passages in each of said back and front masses.
- each of said back and front masses having two of said radial passages aligned axially with one another, the passages of said back mass being displaced from those of said front mass.
- each of said first and second bolt holes comprising portions of generally oval cross section at the ends thereof toward said crystal means, and portions of cylindrical cross section at the ends thereof away from said crystal means, the walls of said cylindrical portions and the walls at the ends of the minor axes of said oval portions engaging said bolt, the walls at the ends of the major axes of said oval portions being spaced from said bolt, said first and second passage means opening into said bolt holes at the ends of said major axes.
- Ultrasonic apparatus in accordance with claim 1, also comprising a perforate supporting device connecting said transducer to said housing, and means for introducing cooling fluid into said housing to flow around the outside of said transducer and out through the perforations in said supporting device, said second passage means being located outside of said housing and spaced from said supporting device.
- said supporting device being a metal flange clamped against said piezoelectric responsive means, said flange having a central bore provided with a wall spaced annularly from said bolt and aligned with said central passage means, and with said bolt holes.
- said first passage means being a plurality of individual radial passages in said back mass
- said conduit means comprises a plurality of individual conduits severally extending from said radial passages between the inside and the outside of said housing.
Abstract
Ultrasonic apparatus comprises a centrally bolted ultrasonic transducer having passages for internal cooling by a stream of fluid such as air. Radial ducts in a metal back mass open into an enlarged portion of a first bolt hole adjacent the bolt for supplying air. Air then flows forward through an annular passage in the piezoelectric crystal means and enters an enlarged portion of a second bolt hole in a metal front mass from which it is discharged through radial ducts in the front mass. Both enlarged portions should be of oval shape to assure strength and rigidity. A housing can surround the transducer for externally cooling it with a stream of air. The transducer can be mounted on the housing by a perforate plate or flange.
Description
United States Patent Loveday 14 1 Sept. 26, 1972 COOLED ULTRASONIC TRANSDUCER 3,394,274 7/1968 Jacke et al. ..3l0/8.2 X [72] Inventor: Thomm E. Loveday, Rochester,
Primary Examiner-J. D. Miller *'"f'"""" Assistant Examiner-Mark O. Budd Asslgnee: Eastman Kodak Company Roch Attorney-William T. French, Robert F. Crocker and esters Henry M. Chapin App! l18797 Ultrasonic apparatus comprises a centrally bolted ultrasonic transducer having passages for internal cool- 52 US. Cl. ..310/8.9, 3l0/8.2, 310/8.7, g by a Stream of fluid Such as air Radial ducts in a 310/91, 310/26 metal back mass open into an enlarged portion of a 51 Int. Cl. ..n04|--17/00 first bolt hole adjacent the bolt for pp y Air [58] Field of Search ..3l0/8.2-8.9, 9.1, then flows forward through an annular passage in the 31()/9 4,26 piezoelectric crystal means and enters an enlarged portion of a second bolt hole in a metal front mass [55 Rgf mn e Cit d from which it is discharged through radial ducts in the front mass. Both enlarged portions should be of oval UNITED STATES PATENTS shape to assure strength and rigidity. A housing can 3 555 297 1/1971 Pierson ..310/8.3 surmund the transducer externally it with 2 831 295 4/1958 Weiss ..3 l0/8.2 x a The transducer can be mmmted 3:283:l82 11/1966 Jones et al. ..3 lO/8.7 husmg by a Perfmte Plate flange- 3,563,086 2/1971 Reed, Jr ..310/8.3 X 8 Chims, 3 Drawing Figures 3,495,104 2/1970 Burgo et al. ..3l0/8.3 X v v s PATENTEDSEP26 I972 3.694.675
THOMAS E LOVEDAY INVENTOR.
ATTORNEY BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel ultrasonic transducer construction having provision for improved cooling of the vibration producing elements.
2. Description of the Prior Art Ultrasonic transducers have been well known for a number, of years and have found extensive applications in industry for the welding of plastics and the like. The most commonly used ultrasonic transducers depend upon piezoelectric crystals for generating the desired vibrations when oscillating electrical currents are applied thereto. An example of such an ultrasonic transducer is described in U.S. Pat. No. 3,328,610. When transducers are used continuously, the crystals tend to become quite hot and it has been found necessary to cool them as by passing a flow of air around the outside of the transducer. While this is effective, I have found that substantial heat still tends to build up in the crystals and the efficiency of cooling should be improved if possible.
U.S. Pat. No. 3,555,297, in the name of Charles W. Pierson, describes a novel cooled transducer wherein air is blown down through a central clamping bolt, up around the outside of the bolt, and then radially out ward through passages between the piezoelectric crystals and the adjoining metal parts, such as radially grooved front and backmasses and an intermediate metal spacer plate. This construction is excellent for its cooling effect, but suffers from the disadvantage that the surfaces of the crystals are not fully supported where the adjoining metal parts have grooves for the passage of air, thus subjecting the crystals to possible fracture when they are energized.
In U.S. Pat. No. 3,495,104 of RA. Burgo et al. an ultrasonic transducer is externally cooled by maintaining it within a surrounding pool of liquid such as oil. This construction is excellent for many operations, but is relative'lycomplex construction, and the possibility of an .oil leakv onto the work, or onto internal crystal surfaces, makes it undesirable for use' where oil'can damage such work as photographic film or paper. Moreover, there is no internal cooling of the transducer crystals.
SUMMARY OF THE INVENTION In accordance with the present invention the efficiency of cooling a centrally bolted ultrasonic transducer is improved by providing for the flow of cooling fluid, such as air, through passage means in a metal back mass to the interior of the transducer, and then forward through the interior in contact with the piezoelectric crystals to the front mass, from which the airis discharged to the outside through second passage means.
With this construction the piezoelectric crystal discs are fully supported over their entire flat surfaces by adjoining metal parts.
Provision is' also made for externally cooling the transducer by surrounding it with a cylindrical housing to which the transducer is connected by a perforate support which is clamped between elements of the transducer. Air is introduced into the housing and flows over the outside of the transducer and out through perforations in the support.
THE DRAWING FIG. 1 is a vertical sectional view through a transducer apparatus embodying the novel cooling construction of the present invention;
FIG. 2 is a cross sectional view taken along the line 2-2 in FIG. 1; and
FIG. 3 is a cross sectional view taken along the line 3-3 in FIG; 1.
THE PREFERRED EMBODIMENT propriate function, such as splicing.
A central retaining bolt 19 extends through axially aligned bolt holes 20 and 21 in the masses 11 and 13, respectively, and in the crystal means C, and is threaded at its end into the front mass 13. The head of bolt 19 bears against the top of back mass 1 l to hold all elements tightly together. I The crystal means C comprises upper and lower piezoelectric crystals discs 23 and 25, and an intermediate electrically conductive metal spacer disc 27 to which conductor 28 is secured. Spacer 27 has opposite faces in intimate contact with the faces of the crystal discs, all three elements being annularly spaced from bolt 19 so that no electrical contact is made with the bolt. Insulation from the bolt can additionally be assured by positioning a cylindrical insulator (not shown) within the annular space 33, with a sufficiently loose fit to permit the flow of air. Discs 23 and 25 can be any desired piezoelectric crystal material, but the well known PZT crystal (lead-zirconate-titanate) is preferred.
It is thus seen that the construction and arrangement is such that continuous passage means for conducting cooling fluid through the interior of the transducer is formed, comprising the radial passage means, the axially aligned bolt holes, and the central holes in crystal means C. Thus, adequate cooling is provided during operation while avoiding both the problem of potentially inadequate crystal support, and the possibility of oil leaks. Instead of using oval shapes, cylindrical counterbores can be used. However, the oval shapes provide certain important advantages. For example, the oval shape of portions of bolt holes 20 and 21 provides for rigidity and better support of all transducer elements, with less possibility of flexing and distortion, than when cylindrical counterbores are provided. A cylindrical counterbore in the front mass also would leave a longer length of the bolt free from contact with the interior,
thus affecting the resonant frequency and performance adversely.
The structure described above is advantageous regardless of how the transducer is supported. However, generally the transducer is supported by an external cylindrical housing 51 which surrounds the transducer T in annularly spaced relation thereto, and is connected thereto by a transversely extending support plate 53 constituting a part of front mass 13. Plate 53 has perforations 54 for the passage of fluid out of housing 51 and for interrupting the transmission of vibrations from the transducer to the cylindrical housing. Plate 53 is shown as a separate metal flange which is clamped between one end of crystal disc 25 and the rest of front mass 13, but it can also constitute an integral part of a unitary front mass. Plate 53 has a central aperture 55 therein to permit air to flow into passages 45 and 46. At its periphery, plate 53 is bolted or otherwise secured to housing 51. Cooling air is introduced into housing 51 through an inlet 57 and flows over the outside of the transducer and out through the apertures 54 in support plate 53.
It should be noted that the radial discharge passages 47 and 49 in the front mass 13 are located on the outside of housing 51, spaced from plate 53, so as to avoid mixing of the heated air from the interior of the transducer with the air circulating over the outside of the transducer.
The simple construction described in detail above effectively cools an ultrasonic transducer which is being used continuously for splicing or sealing plastic materials, and avoids the drawbacks of the prior art such as potential oil leakage, and potential breakage of inadequately supported crystals. My transducer at low power runs about 30 percent cooler than a transducer having no internal cooling. Moreover it is capable of operating continuously at 150 watts input for periods as long as 2 hours.
The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications can be effected within the spirit and scope of the invention.
I claim:
1. Ultrasonic apparatus comprising an ultrasonic transducer comprising, in combination,
a metal back mass having a first longitudinal bolt hole;
a metal front mass having a second longitudinal bolt hole aligned with said first bolt hole;
annular piezoelectric responsive means sandwiched between said front and back masses, and having 4 central passagemeans therethrough aligned with said first and second bolt holesyand a central retaining bolt passing through said first bolt hole, through said central passage means in spaced relation to the wall thereof, and into said second bolt hole;
said first and second bolt holes being enlarged transversely over only portions thereof adjacent said piezoelectric responsive means to space the walls thereof from said bolt;
and said back mass and said front mass having first and second passage means therein, respectively, extending transversely from the outside thereof into the enlarged portions of the bolt holes therein, the construction and arrangement being such that continuous passage means for cooling fluid is formed comprising said transverse passage means, said enlarged portions, and said central passage means; said apparatus also comprisinga housing surrounding said transducer in annularly spaced relation thereto, and conduit means extending between the inside and the outside of said housing and connected into said first passage means in said back mass for supplying cooling fluid thereto.
2. Ultrasonic apparatus in accordance with claim 1, said first and second passage means being a plurality of radial passages in each of said back and front masses.
3. Ultrasonic apparatus in accordance with claim 2, each of said back and front masses having two of said radial passages aligned axially with one another, the passages of said back mass being displaced from those of said front mass.
4. Ultrasonic apparatus in accordance with claim 1, each of said first and second bolt holes comprising portions of generally oval cross section at the ends thereof toward said crystal means, and portions of cylindrical cross section at the ends thereof away from said crystal means, the walls of said cylindrical portions and the walls at the ends of the minor axes of said oval portions engaging said bolt, the walls at the ends of the major axes of said oval portions being spaced from said bolt, said first and second passage means opening into said bolt holes at the ends of said major axes.
5. Ultrasonic apparatus in accordance with claim 4, the major axes of said oval portions being displaced 90 from one another.
6. Ultrasonic apparatus in accordance with claim 1, also comprising a perforate supporting device connecting said transducer to said housing, and means for introducing cooling fluid into said housing to flow around the outside of said transducer and out through the perforations in said supporting device, said second passage means being located outside of said housing and spaced from said supporting device.
7. Ultrasonic apparatus in accordance with claim 7, said supporting device being a metal flange clamped against said piezoelectric responsive means, said flange having a central bore provided with a wall spaced annularly from said bolt and aligned with said central passage means, and with said bolt holes.
8. Ultrasonic apparatus in accordance with claim 1, said first passage means being a plurality of individual radial passages in said back mass, said conduit means comprises a plurality of individual conduits severally extending from said radial passages between the inside and the outside of said housing.
' I UNHE D STATES EATENT OFFICE CERNHCATE @l? QQRREQHON Patnt No. 359M575 Dated September .1972 Inv ntofls) T o s Lcveday I l It is certified that erro r appears in the above-idextified patent I and that said Letters Patent are hereby corrected asshown below: r.
Column A, line 57; claim 7" should read" "claim 6--.
Signed and sealed this 15th day of My 1973.
SEAL) Attest:
EDWARD 'M.FLETCHER,JR; 3 ROBERT GOTTSCHALK Attestlng Officer Commissioner of Patents (5/69) "UNITED STATES PATENT OFFHIE smmwmrs or asssmios Patent No. -7 Dated Septeamb'er 1972 Inventor) Thomas E. Loveday It is certified that error appears in the above-identified petent and that said Letters Patent are hereby corrected as shown below: 7
Column L, line 57, "claim 7" should read" --claim 6--.
Signed and sealed this 15th day of May 1973.
(SEAL) Attest:
EQVQARD M.FLETHER JR ROBERT GOTTSCHALK A estlng Offlcer' Commissioner of Patents
Claims (8)
1. Ultrasonic apparatus comprising an ultrasonic transducer comprising, in combination, a metal back mass having a first longitudinal bolt hole; a metal front mass having a second longitudinal bolt hole aligned with said first bolt hole; annular piezoelectric responsive means sandwiched between said front and back masses, and having central passage means therethrough aligned with said first and second bolt holes; and a central retaining bolt passing through said first bolt hole, through said central passage means in spaced relation to the wall thereof, and into said second bolt hole; said first and second bolt holes being enlarged transversely over only portions thereof adjacent said piezoelectric responsive means to space the walls thereof from said bolt; and said back mass and said front mass having first and second passage means therein, respectively, extending transversely from the outside thereof into the enlarged portions of the bolt holes therein, the construction and arrangement being such that continuous passage means for cooling fluid is formed comprising said transverse passage means, said enlarged portions, and said central passage means; said apparatus also comprising a housing surrounding saiD transducer in annularly spaced relation thereto, and conduit means extending between the inside and the outside of said housing and connected into said first passage means in said back mass for supplying cooling fluid thereto.
2. Ultrasonic apparatus in accordance with claim 1, said first and second passage means being a plurality of radial passages in each of said back and front masses.
3. Ultrasonic apparatus in accordance with claim 2, each of said back and front masses having two of said radial passages aligned axially with one another, the passages of said back mass being displaced 90* from those of said front mass.
4. Ultrasonic apparatus in accordance with claim 1, each of said first and second bolt holes comprising portions of generally oval cross section at the ends thereof toward said crystal means, and portions of cylindrical cross section at the ends thereof away from said crystal means, the walls of said cylindrical portions and the walls at the ends of the minor axes of said oval portions engaging said bolt, the walls at the ends of the major axes of said oval portions being spaced from said bolt, said first and second passage means opening into said bolt holes at the ends of said major axes.
5. Ultrasonic apparatus in accordance with claim 4, the major axes of said oval portions being displaced 90* from one another.
6. Ultrasonic apparatus in accordance with claim 1, also comprising a perforate supporting device connecting said transducer to said housing, and means for introducing cooling fluid into said housing to flow around the outside of said transducer and out through the perforations in said supporting device, said second passage means being located outside of said housing and spaced from said supporting device.
7. Ultrasonic apparatus in accordance with claim 7, said supporting device being a metal flange clamped against said piezoelectric responsive means, said flange having a central bore provided with a wall spaced annularly from said bolt and aligned with said central passage means, and with said bolt holes.
8. Ultrasonic apparatus in accordance with claim 1, said first passage means being a plurality of individual radial passages in said back mass, said conduit means comprises a plurality of individual conduits severally extending from said radial passages between the inside and the outside of said housing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11879771A | 1971-02-25 | 1971-02-25 |
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US3694675A true US3694675A (en) | 1972-09-26 |
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US118797A Expired - Lifetime US3694675A (en) | 1971-02-25 | 1971-02-25 | Cooled ultrasonic transducer |
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Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50121671U (en) * | 1974-03-20 | 1975-10-04 | ||
US4016436A (en) * | 1975-12-10 | 1977-04-05 | Branson Ultrasonics Corporation | Sonic or ultrasonic processing apparatus |
US4352459A (en) * | 1979-11-13 | 1982-10-05 | Sono-Tek Corporation | Ultrasonic liquid atomizer having an axially-extending liquid feed passage |
EP0245671A1 (en) * | 1986-05-09 | 1987-11-19 | Sono-Tek Corporation | Central bolt ultrasonic atomizer |
US4723708A (en) * | 1986-05-09 | 1988-02-09 | Sono-Tek Corporation | Central bolt ultrasonic atomizer |
WO1990006816A1 (en) * | 1988-12-21 | 1990-06-28 | Grünbeck Wasseraufbereitung GmbH | Ultrasound generator |
WO1990006817A1 (en) * | 1988-12-21 | 1990-06-28 | Grünbeck Wasseraufbereitung GmbH | Ultrasound generator and its use |
US4962330A (en) * | 1989-03-21 | 1990-10-09 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Acoustic transducer apparatus with reduced thermal conduction |
US5143222A (en) * | 1988-11-14 | 1992-09-01 | Russell Finex Limited | Sieving apparatus |
US5319278A (en) * | 1992-06-05 | 1994-06-07 | Nec Corporation | Longitudinal-torsional resonance ultrasonic motor with improved support structure |
US5508580A (en) * | 1990-05-24 | 1996-04-16 | Canon Kabushiki Kaisha | Vibration wave driven motor |
US5546809A (en) * | 1994-12-12 | 1996-08-20 | Houston Industries Incorporated | Vibration monitor mounting block |
US5686776A (en) * | 1989-02-10 | 1997-11-11 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
WO1997045078A1 (en) * | 1996-05-29 | 1997-12-04 | Allergan Sales, Inc. | Ultrasonic handpiece with multiple piezoelectric elements and heat dissipator |
US5929552A (en) * | 1996-12-09 | 1999-07-27 | Aisan Kogyo Kabushiki Kaisha | Ultrasonic vibrator |
US6039059A (en) * | 1996-09-30 | 2000-03-21 | Verteq, Inc. | Wafer cleaning system |
US6177755B1 (en) * | 1999-10-22 | 2001-01-23 | Ben Hur | Air cooled ultrasonic apparatus |
US6434244B1 (en) * | 2000-04-26 | 2002-08-13 | Branson Ultrasonics Corporation | Electroacoustic converter |
WO2004047073A3 (en) * | 2002-11-20 | 2004-09-10 | Hielscher Gmbh | Method and device for cooling ultrasonic transducers |
US8303613B2 (en) | 2007-12-07 | 2012-11-06 | Zevex, Inc. | Ultrasonic instrument using langevin type transducers to create transverse motion |
WO2014059063A1 (en) * | 2012-10-12 | 2014-04-17 | Spraying Systems Co. | Fluidized bed coating apparatus |
CN104148270A (en) * | 2014-08-05 | 2014-11-19 | 曹学良 | Energy converter connecting mode suitable for anti-explosion environment |
US9899592B2 (en) * | 2012-07-27 | 2018-02-20 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Actuating drive and method for cooling a solid body actuator housed in an actuating drive with an actuating element |
CN110052390A (en) * | 2019-04-24 | 2019-07-26 | 德悦超声有限公司 | A kind of ultrasonic transducer |
IT201900014946A1 (en) * | 2019-08-22 | 2021-02-22 | Sonic Italia S R L | FORCED COOLING PIEZOELECTRIC TRANSDUCER |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2831295A (en) * | 1955-09-21 | 1958-04-22 | Gulton Ind Inc | Ultrasonic drill |
US3283182A (en) * | 1965-05-11 | 1966-11-01 | Aeroprojects Inc | Transducer assembly |
US3394274A (en) * | 1964-07-13 | 1968-07-23 | Branson Instr | Sonic dispersing device |
US3495104A (en) * | 1968-05-27 | 1970-02-10 | Eastman Kodak Co | Ultrasonic transducer |
US3555297A (en) * | 1969-10-13 | 1971-01-12 | Eastman Kodak Co | Cooled ultrasonic transducer |
US3563086A (en) * | 1968-10-15 | 1971-02-16 | Littleton Research And Enginee | Fatigue testing machine |
-
1971
- 1971-02-25 US US118797A patent/US3694675A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2831295A (en) * | 1955-09-21 | 1958-04-22 | Gulton Ind Inc | Ultrasonic drill |
US3394274A (en) * | 1964-07-13 | 1968-07-23 | Branson Instr | Sonic dispersing device |
US3283182A (en) * | 1965-05-11 | 1966-11-01 | Aeroprojects Inc | Transducer assembly |
US3495104A (en) * | 1968-05-27 | 1970-02-10 | Eastman Kodak Co | Ultrasonic transducer |
US3563086A (en) * | 1968-10-15 | 1971-02-16 | Littleton Research And Enginee | Fatigue testing machine |
US3555297A (en) * | 1969-10-13 | 1971-01-12 | Eastman Kodak Co | Cooled ultrasonic transducer |
Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50121671U (en) * | 1974-03-20 | 1975-10-04 | ||
US4016436A (en) * | 1975-12-10 | 1977-04-05 | Branson Ultrasonics Corporation | Sonic or ultrasonic processing apparatus |
US4352459A (en) * | 1979-11-13 | 1982-10-05 | Sono-Tek Corporation | Ultrasonic liquid atomizer having an axially-extending liquid feed passage |
EP0245671A1 (en) * | 1986-05-09 | 1987-11-19 | Sono-Tek Corporation | Central bolt ultrasonic atomizer |
US4723708A (en) * | 1986-05-09 | 1988-02-09 | Sono-Tek Corporation | Central bolt ultrasonic atomizer |
US5143222A (en) * | 1988-11-14 | 1992-09-01 | Russell Finex Limited | Sieving apparatus |
WO1990006817A1 (en) * | 1988-12-21 | 1990-06-28 | Grünbeck Wasseraufbereitung GmbH | Ultrasound generator and its use |
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US5990597A (en) * | 1989-02-10 | 1999-11-23 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
US5686776A (en) * | 1989-02-10 | 1997-11-11 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
US4962330A (en) * | 1989-03-21 | 1990-10-09 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Acoustic transducer apparatus with reduced thermal conduction |
US5508580A (en) * | 1990-05-24 | 1996-04-16 | Canon Kabushiki Kaisha | Vibration wave driven motor |
US5319278A (en) * | 1992-06-05 | 1994-06-07 | Nec Corporation | Longitudinal-torsional resonance ultrasonic motor with improved support structure |
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US6684891B2 (en) | 1996-09-30 | 2004-02-03 | Verteq, Inc. | Wafer cleaning |
US20060180186A1 (en) * | 1996-09-30 | 2006-08-17 | Bran Mario E | Transducer assembly for megasonic processing of an article |
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US7268469B2 (en) | 1996-09-30 | 2007-09-11 | Akrion Technologies, Inc. | Transducer assembly for megasonic processing of an article and apparatus utilizing the same |
US6463938B2 (en) | 1996-09-30 | 2002-10-15 | Verteq, Inc. | Wafer cleaning method |
US6681782B2 (en) | 1996-09-30 | 2004-01-27 | Verteq, Inc. | Wafer cleaning |
US7211932B2 (en) | 1996-09-30 | 2007-05-01 | Akrion Technologies, Inc. | Apparatus for megasonic processing of an article |
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US20060175935A1 (en) * | 1996-09-30 | 2006-08-10 | Bran Mario E | Transducer assembly for megasonic processing of an article |
US8257505B2 (en) | 1996-09-30 | 2012-09-04 | Akrion Systems, Llc | Method for megasonic processing of an article |
US7117876B2 (en) | 1996-09-30 | 2006-10-10 | Akrion Technologies, Inc. | Method of cleaning a side of a thin flat substrate by applying sonic energy to the opposite side of the substrate |
US5929552A (en) * | 1996-12-09 | 1999-07-27 | Aisan Kogyo Kabushiki Kaisha | Ultrasonic vibrator |
US6177755B1 (en) * | 1999-10-22 | 2001-01-23 | Ben Hur | Air cooled ultrasonic apparatus |
US6434244B1 (en) * | 2000-04-26 | 2002-08-13 | Branson Ultrasonics Corporation | Electroacoustic converter |
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US8303613B2 (en) | 2007-12-07 | 2012-11-06 | Zevex, Inc. | Ultrasonic instrument using langevin type transducers to create transverse motion |
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