CN207478928U - Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer - Google Patents
Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer Download PDFInfo
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- CN207478928U CN207478928U CN201721635896.6U CN201721635896U CN207478928U CN 207478928 U CN207478928 U CN 207478928U CN 201721635896 U CN201721635896 U CN 201721635896U CN 207478928 U CN207478928 U CN 207478928U
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Abstract
The utility model provides a kind of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer, the double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer includes piezoelectric ceramics crystalline substance heap, external metallization block and Sharing Center's coupling metal derby, and it sequentially coaxially connects, and both horizontally and vertically together constituting decussate texture.The utility model largely solves smaller power capacity existing for extensional vibration sandwich piezoelectric ultrasonic transducer of the prior art, unidirectional ultrasonic radiation and the smaller shortcoming of ultrasonic radiation area, while has many advantages, such as double frequency, two-dimentional four-way ultrasonic radiation.
Description
Technical field
The utility model is related to ultrasonic transducer technical field, more particularly, to a kind of double excitation two dimension coupled longitudinal vibration
Sandwich piezoelectric ultrasonic transducer.
Background technology
Power ultrasonic is to be changed the structure of substance tissue, state, function using ultrasonic vibrational energy or these is accelerated to change
The process of change.Compared with other treatment technologies, power ultrasonic technology can often increase substantially processing speed and efficiency, promotion processing
Quality completes general technology and is difficult to the processing work completed.In the application of power ultrasonic technology, ultrasonic transducer is ultrasonic place
The core component of equipment is managed, the quality of performance directly decides the application effect of power ultrasonic.At present, it is led in power ultrasonic
Domain, extensional vibration sandwich piezoelectric ultrasonic transducer are most widely used, and reason is that such energy converter has simple in structure, machine
The advantages that photoelectric transformation efficiency height, high mechanical strength and power adjustable section.
However, with the deep development of power ultrasonic technology, particularly wastewater treatment, metal smelt, Chinese herbal medicine extraction,
Extensive use in ultrasonic coagulation and Ultrasonic machining field, to the ultrasonic power, ultrasound intensity, Ultrasonic Radiation of ultrasonic transducer
Direction and acoustic radiation area propose higher requirement.Therefore, traditional extensional vibration sandwich piezoelectric ultrasonic transducer is not
The new demand of power ultrasonic technology development can be met, be mainly shown as:
1st, by the longitudinal size of energy converter (be usually half-wavelength oscillator), lateral dimension (being less than quarter-wave), dissipate
The limitations such as heat and the mechanical strength of composition material, the power of traditional single extensional vibration sandwich piezoelectric ultrasonic transducer hold
Amount is difficult to be made big.
2nd, there are the single harmony swept areas in ultrasonic radiation direction for traditional extensional vibration sandwich piezoelectric ultrasonic transducer
In place of the deficiencies of smaller, its extensive use will be restricted.
Based on this, the utility model provides a kind of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric supersonic transducing
Device largely solves above-mentioned technical problem, while has many advantages, such as double frequency, two-dimentional four-way ultrasonic radiation.
Utility model content
The purpose of this utility model is to provide double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer, with
The power capacity for solving traditional single extensional vibration sandwich piezoelectric ultrasonic transducer in the prior art is smaller, tradition
Extensional vibration sandwich piezoelectric ultrasonic transducer there are the single smaller problem of harmony swept area in ultrasonic radiation direction, and this
The double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer that utility model provides, while there is double frequency, two dimension four
To the advantages that ultrasonic radiation, largely solves above-mentioned technical problem.
Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model, the double excitation two
It ties up coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer and includes piezoelectric ceramics crystalline substance heap, external metallization block and Sharing Center's coupling
Metal derby；Wherein,
The piezoelectric ceramics crystalline substance heap includes left end piezoelectric ceramics crystalline substance heap and right end piezoelectric ceramics crystalline substance heap；
The external metallization block includes metal derby on external left metal derby, external right metal derby, outside and outer subordinate gold
Belong to block；
The external left metal derby, left end piezoelectric ceramics crystalline substance heap, Sharing Center's coupling metal derby, right end piezoelectric ceramics are brilliant
Heap, external right metal derby sequentially coaxially connect in the horizontal direction, form a half-wavelength oscillator；
Metal derby, Sharing Center couple metal derby and outer subordinate's metal derby in vertical direction sequentially coaxially on the outside
Connection, forms another half-wavelength oscillator.
Further, the left end piezoelectric ceramics crystalline substance heap and right end piezoelectric ceramics crystalline substance heap are by the identical ring of even number plate shape
Shape piezoelectric ceramic wafer stacks together, and endless metal is mounted between ring-shaped piezo ceramic chip described in the two panels of arbitrary neighborhood
Electrode slice is also separately installed with the circular metal electrode positioned at the outside on top and the ring-shaped piezo ceramic chip of bottom end
Piece；Wherein,
Circular metal electrode piece connects opposite polarity electrode respectively described in the two panels of arbitrary neighborhood.
Further, Sharing Center's coupling metal derby is formed for cube structure or two short cylindrical square crossings.
Specifically, Sharing Center's coupling metal derby center is provided with to make energy converter and external mechanical structure
Connect the threaded hole of fixed perforation.
Specifically, the external left metal derby, left end piezoelectric ceramics crystalline substance heap and Sharing Center's coupling metal derby pass sequentially through
Double threaded screw is coaxially connected, to apply prestressing force to left end piezoelectric ceramics crystalline substance heap；
The external right metal derby, right end piezoelectric ceramics crystalline substance heap and Sharing Center's coupling metal derby pass sequentially through double threaded screw
It is coaxially connected, to apply prestressing force to right end piezoelectric ceramics crystalline substance heap.
Further, metal derby and outer subordinate's metal derby couple metal by double threaded screw with Sharing Center on the outside
Block connects.
Alternatively, metal derby, outer subordinate's metal derby and Sharing Center's coupling metal derby are integrated chemical conversion type knot on the outside
Structure.
Specifically, the external metallization block is cylindrical metal block.
Alternatively, centered on the external metallization block trepanning cylindrical metal block.
Alternatively, the external metallization block is conical metal block.
Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model has following excellent
Point：
1st, double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model, utilizes Poisson
Effect and coupled resonance principle realize the two-dimentional coupled resonance of horizontally and vertically two half-wavelength oscillators, and this
The half-wave coupled resonance of both direction is not independent from each other, but couples what metal derby connected each other by Sharing Center,
It is embodied in two kinds of coupled vibrations modes：A kind of is the Vertical Square when the half-wavelength oscillator of horizontal direction is along its longitudinal elongation
To half-wavelength oscillator then longitudinally shortened along it, vice versa, due to the half-wavelength oscillator vibration opposite in phase of both direction, therefore
This vibration mode is referred to as the single order reverse phase mode of oscillation of energy converter described in the utility model；Another is horizontal and vertical
The half-wavelength oscillator in direction elongates or shortens simultaneously, and the two is in phase vibration, and this vibration mode is referred to as the utility model institute
State the single order in phase vibration mode of energy converter.
2nd, double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model has reverse phase
With same two kinds of resonance modes of phase, and the corresponding resonant frequency of both modalities is different, therefore the energy converter of the utility model has
Two resonant frequencies are, it can be achieved that two-frequency operation.
3rd, double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model uses two groups
Piezoelectric ceramics crystalline substance heap encourages, and has larger power capacity.
4th, double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model, reverse phase and same
Two kinds of resonance modes of phase are single order longitudinal vibration modes, therefore energy converter works under reverse phase or in the same direction resonance mode
When, higher electro-acoustic conversion efficiency is respectively provided with, this uses single order harmonics and high-order with traditional sandwich extensional vibration energy converter
Harmonics realizes that the two-frequency operation of energy converter has essential distinction (electro-acoustic conversion efficiency of the energy converter under high-order harmonics under normal conditions
Far below the electro-acoustic conversion efficiency under its single order harmonics).
5th, double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model, no matter anti-
During mutually or with working under phase resonance pattern, four direction can be used as ultrasonic output terminal, not only increase ultrasonic radiation face
Product, while realize two-dimentional four-way ultrasonic radiation.
Above-mentioned setting so that the utility model has that two-frequency operation, power is big, efficient and two-dimentional multi-direction ultrasonic radiation
The advantages of, it can be widely applied to the fields such as dry Ultrasonic machining, ultrasonic welding, ultrasound, ultrasound defoaming, ultrasonic liquid processing.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
Under the premise of labour, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment one
Structure schematic diagram；
Fig. 2 is vibrated for the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer single order reverse phase
The corresponding distribution of amplitudes schematic diagram of mode；
Fig. 3 is the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer single order in phase vibration
The corresponding distribution of amplitudes schematic diagram of mode；
Fig. 4 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment two
Structure schematic diagram；
Fig. 5 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment three
Structure schematic diagram.
Reference numeral：
11- left end piezoelectric ceramics crystalline substance heaps；12- right end piezoelectric ceramics crystalline substance heaps；
21- external left metal derbies；22- external right metal derbies；Metal derby on 23- outsides；
The outer subordinate's metal derbies of 24-；
31- Sharing Centers couple metal derby；32- threaded holes；
41- left part pre-stressed bolts；42- right part pre-stressed bolts；43- tops connect bolt；
44- lower parts connect bolt.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected range.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on can understanding as the case may be
State concrete meaning of the term in the utility model.
Fig. 1 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment one
Structure schematic diagram；Fig. 2 shakes for the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer single order reverse phase
The corresponding distribution of amplitudes schematic diagram of dynamic model state；Fig. 3 surpasses for the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectricity
The corresponding distribution of amplitudes schematic diagram of sonic transducer single order in phase vibration mode；Fig. 4 is the longitudinal coupling of the utility model double excitation two dimension
Close the structure diagram of vibration sandwich piezoelectric ultrasonic transducer embodiment two；Fig. 5 is the utility model double excitation two dimension longitudinal direction
The structure diagram of coupled vibrations sandwich piezoelectric ultrasonic transducer embodiment three.
Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model, the double excitation two
It ties up coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer and includes piezoelectric ceramics crystalline substance heap, external metallization block and Sharing Center's coupling
Metal derby 31；Wherein, above-mentioned piezoelectric ceramics crystalline substance heap includes left end piezoelectric ceramics crystalline substance heap 11 and right end piezoelectric ceramics crystalline substance heap 12；It is above-mentioned
External metallization block includes metal derby 23 and outer subordinate's metal derby 24 on external left metal derby 21, external right metal derby 22, outside；
The left metal derby 21 of said external, left end piezoelectric ceramics crystalline substance heap 11, Sharing Center's coupling metal derby 31, right end piezoelectric ceramics crystalline substance heap
12nd, external right metal derby 22 sequentially coaxially connects in the horizontal direction, forms a half-wavelength oscillator；Metal derby in said external
23rd, Sharing Center's coupling metal derby 31 and outer subordinate's metal derby 24 sequentially coaxially connect in vertical direction, form another half-wave
Long oscillator.Further, above-mentioned left end piezoelectric ceramics crystalline substance heap 11 and right end piezoelectric ceramics crystalline substance heap 12 are identical by even number plate shape
Ring-shaped piezo ceramic chip stack together, be mounted on endless metal between the two panels annular piezoelectric ceramic wafer of arbitrary neighborhood
Electrode slice is also separately installed with circular metal electrode piece positioned at the outside on top and the ring-shaped piezo ceramic chip of bottom end；Wherein,
The two panels annular metal electrode film of arbitrary neighborhood connects opposite polarity electrode respectively.Further, above-mentioned Sharing Center's coupling
Metal derby 31 is formed for cube structure or two short cylindrical square crossings.Specifically, in above-mentioned Sharing Center's coupling metal derby 31
Heart position is provided with the threaded hole 32 for energy converter to be made to connect with external mechanical structure fixed perforation.Further, it is above-mentioned
External left metal derby 21, left end piezoelectric ceramics crystalline substance heap 11 and Sharing Center's coupling metal derby 31 pass sequentially through double threaded screw and coaxially connect
It connects, to apply prestressing force to left end piezoelectric ceramics crystalline substance heap 11；The right metal derby 22 of said external, right end piezoelectric ceramics crystalline substance heap 12 and altogether
Enjoying center coupling metal derby 31, to pass sequentially through double threaded screw coaxially connected, to apply prestressing force to right end piezoelectric ceramics crystalline substance heap 12.
Specifically, metal derby 23 and outer subordinate's metal derby 24 couple metal derby by double threaded screw with Sharing Center respectively in said external
31 tops, bottom end are connected.Alternatively, metal derby 23, outer subordinate's metal derby 24 and Sharing Center's coupling metal derby 31 in said external
Being integrated molding structure.Wherein, double threaded screw can also be replaced with bolt or be other structures, just not illustrated one by one herein.
For ultrasonic vibrator, single order extensional vibration have many advantages, such as that electro-acoustic conversion efficiency is high, displacement amplitude is big and
It is most widely used.The single order of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer provided by the utility model
Extensional vibration is combined by the single order extensional vibration of both direction (both horizontally and vertically), and the single order in the two directions is indulged
It is not independent from each other to vibration, but the coupled vibrations that metal derby 31 is coupled by Sharing Center forms energy converter entirety
Two-dimentional coupled longitudinal vibration.By vibration-mode analysis it is found that the two dimension coupled longitudinal vibration is again comprising two kinds of vibration modes
Coupling：Reverse phase vibration mode (as shown in Figure 2) and in phase vibration pattern (as shown in Figure 3).As shown in Figure 2, mould is vibrated in reverse phase
Under formula, the length of horizontal direction and the length of vertical direction of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer
Degree is half-wavelength, and both ends displacement amplitude both horizontally and vertically is maximum, and crossing center both horizontally and vertically is displacement
Amplitude node, along the horizontal and vertical corresponding position of energy converter at displacement amplitude on the contrary, i.e. energy converter is in reverse phase vibration mode
During lower vibration, another part shortens when forming part elongation between two parts both horizontally and vertically of energy converter, on the contrary
It is as the same, it is vibrated between two parts in reverse phase.From the figure 3, it may be seen that under in phase vibration pattern, double excitation two dimension coupled longitudinal vibration folder
The length of the horizontal direction of core type piezoelectric ultrasonic transducer and the length of vertical direction are similarly half-wavelength, both horizontally and vertically
Both ends displacement amplitudes it is maximum, both horizontally and vertically crossing center is displacement amplitude node, along the horizontal and vertical of energy converter
Displacement amplitude is identical (the displacement amplitude curve of both direction is completely superposed) at corresponding position, i.e., energy converter is in phase vibration mould
When being vibrated under formula, form between two parts both horizontally and vertically of energy converter while elongate or shorten, be between two parts
In phase vibration.In practical applications, when transducer application is in Ultrasonic machining, such as ultrasonic cutting, ultrasonic drilling, ultrasonic welding
Deng two kinds of vibration modes can be applied；When transducer application is when to gas or liquid medium supersound process, such as ultrasound is dry,
Ultrasound defoaming, ultrasonic sewage disposal etc., cause acoustic irradiation to occur " acoustic short circuit " in the medium, together when being vibrated in order to avoid reverse phase
Phase vibration mode is more suitable for.
Embodiment one：
Fig. 1 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment one
Structure schematic diagram.Above-mentioned energy converter mainly includes piezoelectric ceramics crystalline substance heap, external metallization block and Sharing Center's coupling metal derby 31, altogether
Center coupling metal derby 31 is enjoyed to be equipped with for the threaded hole 32 of front and rear perforation of fixing of energy converter and left part pre-stressed bolt
41, right part pre-stressed bolt 42, top connection bolt 43 connects bolt 44 with lower part.Above-mentioned piezoelectric ceramics crystalline substance heap includes two groups,
Respectively left end piezoelectric ceramics crystalline substance heap 11 and right end piezoelectric ceramics crystalline substance heap 12, wherein, left end piezoelectric ceramics crystalline substance heap 11 and right end pressure
Electroceramics crystalline substance heap 12 is full symmetric structure about Sharing Center's coupling metal derby 31.External left metal derby 21, left end piezoelectricity
Ceramic crystalline substance heap 11, Sharing Center's coupling metal derby 31, right end piezoelectric ceramics crystalline substance heap 12 and external right metal derby 22 from left to right according to
Secondary arrangement, so as to form the horizontal direction structure of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer.It is horizontal
Respectively by left part pre-stressed bolt 41 between each section of direction, right part pre-stressed bolt 42 links together and respectively to left end
Piezoelectric ceramics crystalline substance heap 11 and right end piezoelectric ceramics crystalline substance heap 12 apply certain prestressing force, and the size of optimum prestress is counted by theory
It calculates and experiment is coordinated to determine.Metal derby 23, Sharing Center's coupling metal derby 31 and outer subordinate's metal derby 24 pass through respectively on outside
Top connection bolt 43 connects bolt 44 with lower part and is closely joined together, so as to form double excitation two dimension coupled longitudinal vibration folder
The vertical direction structure of core type piezoelectric ultrasonic transducer.Double excitation two dimension coupled longitudinal vibration sandwich pressure provided in this embodiment
Similar " two sticks " square crossing of electric ultrasonic transducer overall structure forms, and the shape of " two sticks " can be circular section bar or square
Tee section stick, and the length of " two sticks " needs to meet half-wavelength, the lateral dimension of " two sticks " is not more than quarter-wave.
Embodiment two：
Fig. 4 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment two
Structure schematic diagram.In the present embodiment, the transducer architecture provided with embodiment one is substantially similar, on the basis of embodiment one,
Difference is external left metal derby 21, external right metal derby 22, metal derby 23 and outer subordinate's metal derby 24 are designed as becoming and cut on outside
The conical structure in face, although this kind of structure, compared with the energy converter of embodiment one, output terminal swept area is smaller, has
The displacement amplitude of bigger and ultrasonic radiation intensity, therefore available for the occasion of high-strength applications of ultrasound.
Embodiment three：
Fig. 5 is the knot of the utility model double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer embodiment three
Structure schematic diagram.In the present embodiment, the transducer architecture provided with embodiment one is substantially similar, on the basis of embodiment one,
Unlike, the center of metal derby 23 and outer subordinate's metal derby 24 is equipped with bellmouth the outside on, and external upper metal derby 23 with outside
Subordinate's metal derby 24 couples metal derby 31 with Sharing Center and is an integral structure design, so as to avoid between each section joint face
Ultrasound-transmissive loss.In the present embodiment, the centre bore of metal derby 23 and outer subordinate's metal derby 24 can also be designed on outside
The hole of other shapes, such as index shape, stretched wire are linear etc., but no matter use the hole of which kind of shape, all should be ensured that on outside
The area of the output terminal cross section of metal derby 23 and outer subordinate's metal derby 24 is by close to one end of Sharing Center's coupling metal derby 31
It tapers into one end far from Sharing Center's coupling metal derby 31, so as to play the role of amplifying transducer displacement amplitude, makes
The output terminal for obtaining external upper metal derby 23 and outer subordinate's metal derby 24 has stronger ultrasonic radiation intensity.The present embodiment energy converter
Operation principle it is identical with embodiment two with embodiment one, but the present embodiment is mainly with metal derby on outside 23 and outer subordinate
Metal derby 24 is as ultrasonic radiation end, it can be achieved that ultrasonic welding is carried out simultaneously in two directions to two annular elements, so as to big
The efficiency of traditional unidirectional ultrasonic welding is improved greatly.Further, since the utility model double excitation two dimension coupled longitudinal vibration presss from both sides
Core type piezoelectric ultrasonic transducer has reverse phase and with two kinds of mode of oscillation of phase, therefore the present embodiment is used for the ultrasonic bond of annular element
Have when connecing there are two working frequency, it can be achieved that double frequency Bi-directional Ultrasonic welds.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer, which is characterized in that including piezoelectric ceramics
Brilliant heap, external metallization block and Sharing Center's coupling metal derby；Wherein,
The piezoelectric ceramics crystalline substance heap includes left end piezoelectric ceramics crystalline substance heap and right end piezoelectric ceramics crystalline substance heap；
The external metallization block includes metal derby and outer subordinate's metal derby on external left metal derby, external right metal derby, outside；
It is the external left metal derby, left end piezoelectric ceramics crystalline substance heap, Sharing Center's coupling metal derby, right end piezoelectric ceramics crystalline substance heap, outer
The right metal derby in portion sequentially coaxially connects in the horizontal direction, forms a half-wavelength oscillator；
Metal derby, Sharing Center's coupling metal derby and outer subordinate's metal derby sequentially coaxially connect in vertical direction on the outside
It connects, forms another half-wavelength oscillator.
2. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 1, feature exist
In the left end piezoelectric ceramics crystalline substance heap and right end piezoelectric ceramics crystalline substance heap are by the identical ring-shaped piezo ceramic chip of even number plate shape
It stacks together, circular metal electrode piece is mounted between ring-shaped piezo ceramic chip described in the two panels of arbitrary neighborhood, positioned at top
The outside of the ring-shaped piezo ceramic chip of end and bottom end is also separately installed with the circular metal electrode piece；Wherein,
Circular metal electrode piece connects opposite polarity electrode respectively described in the two panels of arbitrary neighborhood.
3. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 2, feature exist
In Sharing Center's coupling metal derby is formed for cube structure or two short cylindrical square crossings.
4. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 3, feature exist
In Sharing Center's coupling metal derby center is provided with that energy converter is made to connect fixed pass through with external mechanical structure
Logical threaded hole.
5. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 4, feature exist
In it is coaxial that the external left metal derby, left end piezoelectric ceramics crystalline substance heap and Sharing Center's coupling metal derby pass sequentially through double threaded screw
Connection, to apply prestressing force to left end piezoelectric ceramics crystalline substance heap；
It is coaxial that the external right metal derby, right end piezoelectric ceramics crystalline substance heap and Sharing Center's coupling metal derby pass sequentially through double threaded screw
Connection, to apply prestressing force to right end piezoelectric ceramics crystalline substance heap.
6. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 5, feature exist
In metal derby and outer subordinate's metal derby couple metal derby with Sharing Center by double threaded screw and connect on the outside.
7. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 5, feature exist
In metal derby, outer subordinate's metal derby and Sharing Center's coupling metal derby being integrated molding structure on the outside.
8. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 1, feature exist
In the external metallization block is cylindrical metal block.
9. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 1, feature exist
In the cylindrical metal block of trepanning centered on the external metallization block.
10. double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer according to claim 1, feature exist
In the external metallization block is conical metal block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721635896.6U CN207478928U (en) | 2017-11-30 | 2017-11-30 | Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer |
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| CN201721635896.6U CN207478928U (en) | 2017-11-30 | 2017-11-30 | Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737709A (en) * | 2017-11-30 | 2018-02-27 | 中国计量大学 | Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer |
| CN109226782A (en) * | 2018-10-30 | 2019-01-18 | 河南理工大学 | Double excitation ultrasound with the secondary amplification of torsional oscillation indulges-torsion combined cut method and device |
-
2017
- 2017-11-30 CN CN201721635896.6U patent/CN207478928U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737709A (en) * | 2017-11-30 | 2018-02-27 | 中国计量大学 | Double excitation two dimension coupled longitudinal vibration sandwich piezoelectric ultrasonic transducer |
| CN107737709B (en) * | 2017-11-30 | 2022-09-16 | 中国计量大学 | Double-excitation two-dimensional longitudinal coupling vibration sandwich type piezoelectric ultrasonic transducer |
| CN109226782A (en) * | 2018-10-30 | 2019-01-18 | 河南理工大学 | Double excitation ultrasound with the secondary amplification of torsional oscillation indulges-torsion combined cut method and device |
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