CN108787299A - A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula - Google Patents
A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula Download PDFInfo
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- CN108787299A CN108787299A CN201810618367.8A CN201810618367A CN108787299A CN 108787299 A CN108787299 A CN 108787299A CN 201810618367 A CN201810618367 A CN 201810618367A CN 108787299 A CN108787299 A CN 108787299A
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- low
- weibull
- parameter weibull
- formula
- frequency ultrasonic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0653—Details
Landscapes
- Special Spraying Apparatus (AREA)
Abstract
The present invention provides a kind of gas to help three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, and it is axial direction that nozzle, which integrally shakes direction,.Atomizer amplitude transformer is three parameter Weibull shaped form amplitude transformers to the three parameter Weibull shaped form low frequency ultrasounds of the present invention three times.Metal volume is small used in three parameter Weibull shaped form amplitude transformers, and fever is few, overcomes the disadvantage that other shapes amplitude transformer metal volume is big, fever is more.The gas of the present invention helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, is acted on by the high pressure draught of the air compressor at intake stack, makes droplet that third time occur in sheet metal right side and is atomized.The shortcomings that low-frequency ultrasonic atomizing is difficult to generate ultra-fine droplet is breached, the fields such as atomising cultivation and ultrasound spraying are can be used for.
Description
Technical field
The present invention relates to the invention belongs to atomising cultivation fields, and in particular to a kind of gas helps three parameter Weibull low frequency of formula super
Sound atomizer.
Background technology
Ultrasonic atomizer is since the advantages such as its droplet sizes fine uniform are before agricultural engineering field has a wide range of applications
Scape.Ultrasonic atomizatio refers to being broken up aqueous water minor structure by the high-frequency resonant of ceramic atomizing piece using the electronics higher-order of oscillation
And the elegant water mist of nature is generated, it is not required to heat or add any chemical reagents.The master of the amplitude transformer of ultrasonic atomizatio shower nozzle at present
Shape is wanted to have cone, Bessel type and step type etc..Conical horn, it is simple in structure, it is readily designed and produced, but its
Amplification coefficient is low；Horn,stepped has high amplification coefficient, but also has high stress concentration, easily snaps off.Circular cone
Its amplitude transformer metal volume of shape amplitude transformer, horn,stepped is big, and fever is more, leads to short life.
Ultrasonic secondary atomized spray head is the most critical component of ultrasonic atomizer, by ultrasonic transducer, amplitude transformer, nozzle and steel
Four part of suspension ball forms, and one end of amplitude transformer connects ultrasonic transducer, and the other end connects nozzle, sets up separately in nozzle front and set steel
Ball.The electric signal of the higher-order of oscillation is converted to ultrasonic mechanical vibration, the sound that amplitude transformer generates ultrasonic transducer by ultrasonic transducer
Wave-amplitude amplifies, and cavitation effect is generated at the atomization face before nozzle, is atomized the liquid into, while generating focusing acoustic field and hanging steel ball
It floats, droplet and the suspension ball collision of generation generate fine mist；Secondary-atomizing can only occur for this ultrasonic nozzle.
Invention content
The present invention is directed to overcome above-mentioned the deficiencies in the prior art, a kind of three compound luffings of parameter Weibull shaped form are provided
Bar, metal volume used in the structure amplitude transformer is small, to reduce metal fever, so that droplet generation is atomized three times, can generate ultra-fine
Droplet.
In order to solve the above technical problems, the specific technical solution that the present invention uses is as follows：
A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, including is from left to right sequentially connected by fastening bolt
Back shroud, thin electrodes, piezoelectric ceramics and front shroud together, the piezoelectric ceramics, thin electrodes quantity be 2 or 4, piezoelectricity pottery
Porcelain setting alternate with thin electrodes, is arranged dead ring between thin electrodes, piezoelectric ceramics and fastening bolt；It is characterized in that：Front shroud
End face on be fixed with three parameter Weibull shaped form complex horns,
The three parameters Weibull shaped form complex horn is three parameters by the part A and cross section contour of cylindrical shape
The part B of Weibull curve is combined；The three parameter Weibull curve of cross section contour of the part B is：
The three parameters Weibull shaped form complex horn be equipped with input duct, intake stack, intake stack into
Air port is connected by blast pipe with compressor；
The right end end face of the three parameters Weibull shaped form complex horn is equipped with counterbore, and input duct goes out liquid
Mouthful, the air outlet of intake stack is respectively positioned on the bottom surface of the counterbore；The sheet metal is fixed on the atomization end face of amplitude transformer
It is upper to seal the counterbore, there is mist through-hole on the sheet metal.
Further, a diameter of 30mm-35mm of the part A of the cylindrical shape；The right side circular diameter of the part B
For 3-5mm.
Further, the input duct is on plane XOY and bent relative to the three parameters Weibull with intake stack
The axis mn of line style complex horn is symmetrical.
Further, the length in the gap between the liquid outlet and sheet metal of the input duct is 15mm-20mm.
Further, the mist through-hole diameter that goes out on sheet metal is 3.5um-5um.
Further, the thin electrodes, piezoelectric ceramics quantity be 4 pieces, and two pieces of radial polarizations, two pieces of radial poles
Change；And 4 pieces of piezoelectric ceramics polarization directions rotate clockwise 90 °, 180 °, 270 ° successively, the top half of piezoelectric ceramics connects successively
Connect the anode of power supply, lower half connects the cathode of power supply successively；4 thin electrodes are sequentially connected anode, cathode.
Further, the thin electrodes, piezoelectric ceramics quantity be 2 pieces, and one piece of radial polarization, one piece of radial pole
Change；2 thin electrodes are sequentially connected anode, cathode.
Further, the length of the low-frequency ultrasonic atomizing nozzle is a pressure waves wavelength.
Further, the centre of 2 or 4 blocks of piezoelectric ceramics is nodal section 1, apart from the ultrasonic atomizatio shower nozzle left end at nodal section 1
Face, front shroud right side length be quarter-wave；Midpoint for the ring flange for fixing the ultrasonic atomizatio shower nozzle
For nodal section 2, the length at nodal section 2 apart from front shroud right side, the ultrasonic atomizatio shower nozzle right side is quarter-wave.
The course of work of the present invention is as follows：Liquid is flowed into from the inlet on three parameter Weibull shaped form complex horns
In ultrasonic atomizatio shower nozzle, from the liquid outlet outflow on three parameter Weibull shaped form complex horns, liquid enters in resonant cavity,
Under being acted on due to the high pressure draught of air compressor in resonant cavity, liquid occurs to be atomized for the first time.In the height of air compressor
Droplet velocities after the lower atomization for the first time of pressure gas stream effect increase, and the left end in sheet metal, droplet hair are beaten with higher speed
Raw second of atomization, the mist droplet particle size after second of atomization are less than the mist droplet particle size after atomization for the first time.After second is atomized
Droplet projects under the high pressure draught effect of air compressor from the laser via of sheet metal, since sheet metal is with amplitude transformer
The ultrasonic vibration of same frequency is done, so third time atomization occurs for the outer end face in sheet metal.
The invention has the advantages that：
1. the present invention uses three parameter Weibull shaped form complex horns, three parameter Weibull shaped form complex horns
Metal volume used is small, and cross section contour is smooth infinitely, compared with conical horn, horn,stepped, has stress
Collect medium and small, long working life is small, and fever is few, and half wave resonances length is big, and resonance frequency range is wide, can transmit relatively high power
The features such as
2. compared with exponential type curve amplitude transformer, the present invention is because use three parameter Weibull curves, to make the song
Line flexibility will be got well, and can be obtained curve of different shapes after changing parameter therein, be better met different atomizations and want
It asks.
3. compared with exponential type curve amplitude transformer, the present invention can obtain amplification coefficient bigger when lossless, and by
When load, amplitude decaying is small, and work more stable, impedance variations smaller.
Description of the drawings
Fig. 1 is the structure chart that gas of the present invention helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula.
Fig. 2 is the structure chart of the three parameter Weibull shaped form complex horns of the present invention.
Fig. 3 is the three parameter Weibull curves of the present invention.
Fig. 4 is the enlarged drawing that the gas of the present invention helps the right end of three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula.
In figure：
1, back shroud, 2, thin electrodes, 3, piezoelectric ceramics, 4, dead ring, 5, fastening bolt, 6, front shroud, 7, miniature fastening
Bolt, 8, three parameter Weibull shaped form complex horns, 9, inlet, 10, input duct, 11, sheet metal, 12, cathode
Lead, 13, positive wire, 14, ring flange, 15, blast pipe, 16, air inlet, 17, air compressor, 18, intake stack.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, the gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, including from left to right by fastening spiral shell
Back shroud 1, thin electrodes 2, piezoelectric ceramics 3 and front shroud 6 that bolt 5 is connected in turn, the piezoelectric ceramics 3, thin electrodes 2
Quantity is 2, and dead ring is arranged between thin electrodes 2, piezoelectric ceramics 3 and fastening bolt 5 in the setting alternate with thin electrodes 2 of piezoelectric ceramics 3
4.Several thin electrodes 2 are sequentially connected anode, cathode；The top half of piezoelectric ceramics is sequentially connected the anode of power supply, lower half successively
Connect the cathode of power supply.Three parameter Weibull shaped form complex horns 8, the right end of front shroud 6 are fixed on the end face of front shroud 6
It is linked together by 4 miniature fastening bolts 7 with the left end of three parameter Weibull shaped form complex horns 8.Entire ultrasound mist
Change jet size is a pressure waves wavelength.The centre of piezoelectric ceramics 3 is nodal section 1, apart from ultrasonic atomizatio shower nozzle at nodal section 1
Left side is quarter-wave, apart from front shroud right side is quarter-wave at nodal section 1.14 midpoint of ring flange is nodal section
2, apart from front shroud right side be quarter-wave at nodal section 2, at nodal section 2 apart from ultrasonic atomizatio shower nozzle right side be four/
One wavelength.
As shown in Fig. 2, the three parameters Weibull shaped form complex horn 8 is taken turns by the part A of cylindrical shape and section
Profile is that the part B of three parameter Weibull curves is combined；The three parameter Weibull curve of cross section contour of the part B
For：
Three parameter Weibull curves represented by above-mentioned formula are as shown in Figure 3.
The part A of three parameter Weibull shaped form complex horns 8 is cylinder, cylinder diameter 30mm-35mm.Three
The right side circular diameter of the part B of parameter Weibull shaped form complex horn 8 is 3-5mm.
As shown in figure 4, the three parameters Weibull shaped form complex horn 8 is equipped with input duct 10, intake stack
18, input duct 10 has inlet 9 and liquid outlet；Intake stack 18 has air inlet 16 and air outlet.Air compressor 17
Mounted in the inlet of intake stack 18, the air inlet of intake stack 18 is connected by blast pipe 15 with compressor 17.The feed liquor
Pipeline 10 is with intake stack 18 on plane XOY and relative to the axis of the three parameters Weibull shaped form complex horn 8
Mn is symmetrical.
The right end end face of the three parameters Weibull shaped form complex horn 8 is equipped with counterbore, and input duct 10 goes out
Liquid mouth, intake stack 18 air outlet be respectively positioned on the bottom surface of the counterbore；The sheet metal 12 is fixed on the mist of amplitude transformer 8
Change and seal the counterbore on end face, there is mist through-hole on the sheet metal 12.The three compound luffings of parameter Weibull shaped form
It is gap between liquid outlet 10 on bar 8 and sheet metal 11.Between the liquid outlet and sheet metal 11 of the input duct 10
Gap length be 15mm-20mm.The mist through-hole diameter that goes out on sheet metal 12 is 3.5um-5um.
Thin electrodes 2 described in embodiment illustrated in fig. 1, piezoelectric ceramics 3 quantity be 2 pieces, and one piece of radial polarization, one piece
Radial polarised；2 thin electrodes are sequentially connected anode, cathode.In addition, the quantity of the thin electrodes 2, piezoelectric ceramics 3 can also be equal
It is 4 pieces, two pieces of radial polarizations, two pieces of radial polariseds；And 4 pieces of 3 polarization directions of piezoelectric ceramics rotate clockwise successively 90 °, 180 °,
270 °, the top half of piezoelectric ceramics is sequentially connected the cathode that the anode of power supply, lower half connect power supply successively；4 thin electrodes are successively
Connection anode, cathode.When additional electric current of voltage regulation signal is added to piezoelectric ceramics on piece, piezoelectric ceramics middle and upper part will generate expansion,
Middle and lower part, which will generate, shrinks deformation, therefore will generate a bending moment in piezoelectric ceramics, curved to excite total to generate
Qu Zhendong so that droplet more refines.
Nutrient solution is flowed into from the inlet 9 on three parameter Weibull shaped form complex horns 8 in ultrasonic atomizatio shower nozzle, from
Liquid outlet outflow on three parameter Weibull shaped form complex horns 8 is atomized for the first time in the right side of liquid outlet.For the first time
Droplet velocities after atomization are relatively low for mono- 4m/S of 3m/S.
The wind speed of air compressor 17 is 15m/S-20m/S, is atomized for the first time under the wind-force effect of air compressor 17
Droplet velocities afterwards increase, and in intra resonant cavity, under the action of droplet is by high pressure draught, droplet is further smashed, droplet
Occur second to be atomized.Mist droplet particle size after second of atomization is less than the mist droplet particle size after being atomized for the first time.
Droplet after second of atomization is penetrated under the wind-force effect of air compressor 17 from the mist through-hole that goes out of sheet metal 11
Go out, third time atomization occurs in the right side of sheet metal, after the mist droplet particle size after third time atomization is less than second of atomization
Mist droplet particle size.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (9)
1. a kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, including is from left to right connected successively by fastening bolt (5)
Back shroud (1), thin electrodes (2), piezoelectric ceramics (3) and the front shroud (6) being connected together, the piezoelectric ceramics (3), thin electrodes
(2) quantity is 2 or 4, piezoelectric ceramics (3) and the alternate setting of thin electrodes (2), thin electrodes (2), piezoelectric ceramics (3) and fastening spiral shell
Dead ring (4) is set between bolt (5)；It is characterized in that：It is multiple that three parameter Weibull shaped forms are fixed on the end face of front shroud (6)
Amplitude transformer (8) is closed,
The three parameters Weibull shaped form complex horn (8) is three parameters by the part A and cross section contour of cylindrical shape
The part B of Weibull curve is combined；The three parameter Weibull curve of cross section contour of the part B is：
The three parameters Weibull shaped form complex horn (8) is equipped with input duct (10), intake stack (18), blast pipe
The air inlet in road (18) is connected by blast pipe (15) with compressor (17)；
The right end end face of the three parameters Weibull shaped form complex horn (8) is equipped with counterbore, and input duct (10) go out
Liquid mouth, intake stack (18) air outlet be respectively positioned on the bottom surface of the counterbore；The sheet metal (12) is fixed on amplitude transformer
(8) counterbore is sealed on atomization end face, and there is mist through-hole on the sheet metal (12).
2. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：The circle
A diameter of 30mm-35mm of the part A of bar shape；The right side circular diameter of the part B is 3-5mm.
3. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：It is described into
Liquid pipe road (10) is with intake stack (18) on plane XOY and relative to the three parameters Weibull shaped form complex horn
(8) axis mn is symmetrical.
4. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：It is described into
The length in the gap between the liquid outlet and sheet metal 11 in liquid pipe road 10 is 15mm-20mm.
5. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：Metal foil
The mist through-hole diameter that goes out on piece 12 is 3.5um-5um.
6. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：It is described thin
Electrode (2), piezoelectric ceramics (3) quantity be 4 pieces, and two pieces of radial polarizations, two pieces of radial polariseds；And 4 pieces of piezoelectric ceramics (3)
Polarization direction rotates clockwise 90 °, 180 °, 270 ° successively, and the top half of piezoelectric ceramics is sequentially connected the anode of power supply, lower half
The cathode of power supply is connect successively；4 thin electrodes are sequentially connected anode, cathode.
7. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：It is described thin
Electrode (2), piezoelectric ceramics (3) quantity be 2 pieces, and one piece of radial polarization, one piece of radial polarised；2 thin electrodes connect successively
Connect anode, cathode.
8. gas according to claim 1 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：It is described low
The length of frequency ultrasonic atomizatio shower nozzle is a pressure waves wavelength.
9. gas according to claim 7 helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula, it is characterised in that：2 or 4 pieces
The centre of piezoelectric ceramics (3) is nodal section 1, apart from the ultrasonic atomizatio shower nozzle left side, front shroud (6) right side at nodal section 1
Length is quarter-wave；The midpoint of ring flange (14) for fixing the ultrasonic atomizatio shower nozzle is nodal section 2, nodal section 2
Length of the place apart from front shroud (6) right side, the ultrasonic atomizatio shower nozzle right side is quarter-wave.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618367.8A CN108787299A (en) | 2018-06-15 | 2018-06-15 | A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618367.8A CN108787299A (en) | 2018-06-15 | 2018-06-15 | A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula |
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| CN108787299A true CN108787299A (en) | 2018-11-13 |
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| CN201810618367.8A Pending CN108787299A (en) | 2018-06-15 | 2018-06-15 | A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772670A (en) * | 2019-02-13 | 2019-05-21 | 方兵 | Ultrasonic variable amplitude bar |
| CN112317288A (en) * | 2020-11-09 | 2021-02-05 | 清华大学 | Ultrasonic processing device and ultrasonic processing system |
| CN113977344A (en) * | 2021-11-19 | 2022-01-28 | 南京航空航天大学 | Ultrasonic vibration atomization rotating jet cooling device and operation process thereof |
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| EP0421439A3 (en) * | 1989-10-05 | 1992-03-18 | Firma J. Eberspaecher | Ultrasonic atomiser |
| CN104209222A (en) * | 2014-09-19 | 2014-12-17 | 江苏大学 | Bernoulli twisted-pair low-frequency ultrasonic triple atomizing spray nozzle |
| CN106513232A (en) * | 2016-12-01 | 2017-03-22 | 江苏大学 | Low-frequency ultrasonic superfine straight fog drop flow producing device |
| CN107199148A (en) * | 2017-06-27 | 2017-09-26 | 江苏大学 | A kind of low-voltage driving moves axle Vickers shaped form three atomizers of low frequency ultrasound |
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2018
- 2018-06-15 CN CN201810618367.8A patent/CN108787299A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0421439A3 (en) * | 1989-10-05 | 1992-03-18 | Firma J. Eberspaecher | Ultrasonic atomiser |
| CN104209222A (en) * | 2014-09-19 | 2014-12-17 | 江苏大学 | Bernoulli twisted-pair low-frequency ultrasonic triple atomizing spray nozzle |
| CN106513232A (en) * | 2016-12-01 | 2017-03-22 | 江苏大学 | Low-frequency ultrasonic superfine straight fog drop flow producing device |
| CN107199148A (en) * | 2017-06-27 | 2017-09-26 | 江苏大学 | A kind of low-voltage driving moves axle Vickers shaped form three atomizers of low frequency ultrasound |
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| Title |
|---|
| 王爱民: "《机械可靠性设计》", 31 December 2015, 北京理工大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772670A (en) * | 2019-02-13 | 2019-05-21 | 方兵 | Ultrasonic variable amplitude bar |
| CN109772670B (en) * | 2019-02-13 | 2020-08-28 | 中国海洋大学 | Ultrasonic amplitude transformer |
| CN112317288A (en) * | 2020-11-09 | 2021-02-05 | 清华大学 | Ultrasonic processing device and ultrasonic processing system |
| CN112317288B (en) * | 2020-11-09 | 2021-09-07 | 清华大学 | Ultrasonic processing device and ultrasonic processing system |
| CN113977344A (en) * | 2021-11-19 | 2022-01-28 | 南京航空航天大学 | Ultrasonic vibration atomization rotating jet cooling device and operation process thereof |
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