CN106076450A - A kind of particle suspension dynamic focusing heating system and heating means thereof - Google Patents
A kind of particle suspension dynamic focusing heating system and heating means thereof Download PDFInfo
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- CN106076450A CN106076450A CN201610391971.2A CN201610391971A CN106076450A CN 106076450 A CN106076450 A CN 106076450A CN 201610391971 A CN201610391971 A CN 201610391971A CN 106076450 A CN106076450 A CN 106076450A
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Abstract
The invention belongs to materials processing technology field, disclose a kind of particle suspension dynamic focusing heating system, including computer control module, Temperature Feedback module, position feedback module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module, computer control module communication link position feedback module, Temperature Feedback module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module；Ultrasonic standing wave suspending module includes ultrasonic generator, ultrasonic transducer and reflection end, ultrasonic generator electrical connection ultrasonic transducer, and the spoke side of ultrasonic transducer and reflection end constitute resonator cavity；Ultrasonic dynamic focusing heating module includes multichannel signal ultrasonic generator and ultrasound transducer array, multichannel signal ultrasonic generator electrical connection ultrasound transducer array；Also disclose the heating means of this heating system.This heating system is pollution-free to microgranule, microgranule is not had conductive magneto-conductive requirement, do not have soliqueous restriction, do not have the transparency requirement, heating means are simple.
Description
Technical field
The invention belongs to materials processing technology field, be specifically related to a kind of particle suspension based on composite ultraphonic technology dynamic
Focal heat system and heating means thereof.
Background technology
Along with deepening continuously of condensed state matter research, people are more and more harsh for the requirement of experiment condition, its hollow
Between environment be such a kind of special environment, its microgravity, without container and ultrahigh vacuum effect, solidification phenomenon and fluid are showed
It it is ideal experiment condition for the research of elephant.In in the past few decades, aeronautical and space technology has obtained fast development, but
Being that the space resources that people are obtained so far is the most extremely limited, therefore in space environmental simulation, the surface process of various effects should
Transport and give birth to.Utilize acoustic levitation technique can with in space environmental simulation without container state, on the ground material is carried out without container
Melting, is possible to prevent the crucible material contact stain to melting material, and this has important reality for the analysis and research of material
Meaning.It addition, be to study hydrodynamics and the high accuracy of liquid material physicochemical properties on drop surface without container technique
Measure and provide good experiment condition.
For the heating means aspect of suspension material, existing heating means focus primarily upon by LASER HEATING, electromagnetism
In the methods such as heating, but these methods exist clearly disadvantageous.The method using LASER HEATING can only be right for transparent material
In non-transparent material, laser is difficult to penetrate, and energy cannot be transferred to specific region；Material is had by the method using Electromagnetic Heating
Special requirement, i.e. material to have the restriction of conduction, magnetic conductivity.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the invention provides a kind of microgranule based on composite ultraphonic technology and hang
Floating state focal heat system and heating means thereof.This heating system is by ultrasonic standing wave suspension technology and ultrasound phase-control focusing technology
Being compounded to form ULTRASONIC COMPLEX field technology, ultrasonic standing wave suspension technology is the piston utilizing the spoke side of ultrasonic transducer to produce high frequency
Formula is vibrated, and forms sound field in media as well, places reflection end, make acoustic reflection return and incident acoustic wave phase on sound-wave path
Superposition mutually, the distance between regulation radiation end face and reflection end face, it is allowed to the integral multiple into ultrasound wave half-wavelength, incidence wave is with anti-
Ejected wave repeated multiple times superposition in sound field space forms high intense standing wave field, and forms sound radiation pressure, is placed in standing-wave sound field
Microgranule, under the effect of sound radiation pressure, reaches suspended state；Focus ultrasonic technology converts acoustic energy into heat energy, its essence is sound wave
With the process of the form from the close-by examples to those far off Propagation of Energy of vibration, the intervention of ultrasonic energy causes the fierceness of each infinitesimal part in medium to shake
Move and friction each other so that part acoustic energy is converted into heat energy, medium local temperature can be made to raise rapidly, when multi beam sound wave
Converge in medium local time simultaneously, medium local temperature can be made to raise at short notice faster；In conjunction with standing wave suspension technology to material
Capturing without container of material suspends, and does not has conductive magneto-conductive requirement, soliqueous restriction to material, and also can for non-transparent material
Heating so that use field more extensive, for condensed state physics and to the hydrodynamics on research drop surface and
The high-acruracy survey of the physico character of liquid material provides good experiment condition.
In order to reach foregoing invention purpose, the present invention by the following technical solutions:
A kind of particle suspension dynamic focusing heating system, including computer control module, Temperature Feedback module, position feedback
Module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module, described computer control module communication connects described position
Feedback module, Temperature Feedback module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module；
Described ultrasonic standing wave suspending module includes ultrasonic generator, ultrasonic transducer and reflection end, described ultrasonic generator
Electrical connection ultrasonic transducer, the spoke side of described ultrasonic transducer and reflection end constitute resonator cavity；
Described ultrasonic dynamic focusing heating module includes multichannel signal ultrasonic generator and ultrasound transducer array, described many
Road signal ultrasonic generator electrical connection ultrasound transducer array.
Further, described computer control module includes input block, data storage cell, data processing unit, defeated
Going out unit, controller and display, described input block uses interface to be connected with data storage cell, described data storage cell
Interface is used to be connected with data processing unit, output unit, controller, display.
Further, described output unit uses USB to connect described ultrasonic generator.
Further, described output unit uses CAN to connect described multichannel signal ultrasonic generator.
Further, described Temperature Feedback module includes that infrared temperature sensor, the first AD conversion unit and first are single
Sheet machine 80C51, described first single-chip microcomputer 80C51 use USB to connect described input block.
Further, described position feedback module includes ultrasonic position sensor, the second AD conversion unit and second
Single-chip microcomputer 80C51, described second singlechip 80C51 use USB to connect described input block.
Further, the end face of described reflection end is plane or concave spherical surface.
The invention also discloses a kind of heating means based on particle suspension dynamic focusing heating system, including following step
Rapid:
(1) computer control module is utilized to start ultrasonic standing wave suspending module, described ultrasonic generator and ultrasonic transducer
The first ultrasound wave launched after resonance matching forms standing wave in resonator cavity, is placed in resonator cavity by microgranule, makes particle suspension；
(2) after microgranule stable suspersion, described position feedback module and Temperature Feedback module are to the position of microgranule and temperature
Monitor in real time, then position and temperature signal are transmitted to computer control module；
(3) computer control module is utilized to start ultrasonic dynamic focusing heating module, according to position and the temperature of described microgranule
Degree, based on phased delay and focusing technology, the second ultrasound wave launched with ultrasound transducer array by multichannel signal ultrasonic generator
Focus on described microgranule, thus described microgranule is carried out dynamic focusing heating；
(4) when Temperature Feedback module monitors to microgranule is heated to temperature required, described computer control module controls
Ultrasonic dynamic focusing heating module is out of service.
The present invention compared with prior art, provides the benefit that:
(1) ultrasonic standing wave suspension technology is focused on skill with ultrasound phase-control by the particle suspension dynamic focusing heating system of the present invention
Art is compounded to form ULTRASONIC COMPLEX field technology and microgranule carries out the heating that suspends, pollution-free to microgranule, and microgranule is not had conductive magneto-conductive
Requiring, do not have soliqueous restriction, do not have transparent requirement, application is more extensive.
(2) the particle suspension dynamic focusing heating system of the present invention can with reflection line position by regulation resonator cavity radiating surface
Suspend at standing wave node controlling one or more objects, utilize the ultrasound phase-control dynamic focusing heating technique can be simultaneously to multiple
Object heats.
(3) present invention heating means based on particle suspension dynamic focusing heating system, use the phase-control focusing skill optimized
Art, can carry out overall heating to diameter less than the material of half wavelength, it is possible to heat material internal regional dynamics scan-type, shape
Become heating track.
Accompanying drawing explanation
Fig. 1 is particle suspension dynamic focusing heating system frame diagram of the present invention.
Fig. 2 is the single axle plane standing wave suspension-phase-control focusing heat particles schematic diagram in the embodiment of the present invention one.
Fig. 3 is the connection diagram of each parts in the embodiment of the present invention one Computer control module.
Fig. 4 is the single axle concave spherical surface standing wave suspension-phase-control focusing multiparticulates heating schematic diagram in the embodiment of the present invention two.
Fig. 5 is that the single axle plane standing wave suspension-phase-control focusing interparticle regional dynamics in the embodiment of the present invention three is bent
Line heating schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Embodiment one:
As Figure 1-3, the particle suspension dynamic focusing heating system of the present embodiment, including computer control module, position
Put feedback module, Temperature Feedback module, ultrasonic standing wave suspending module and ultrasonic dynamic focusing heating module.
Computer control module, including input block, data storage cell, data processing unit, output unit, controller
And display, input block uses interface to be connected with data storage cell, and input block completes the input of signal and is stored in number
According to memory element, data storage cell uses interface to be connected with controller, data processing unit, output unit, display, controls
Device control data storage cell complete the signal to output unit, display, data processing unit transmission, data storage cell with
Data processing unit completes the transmitted in both directions of signal, and data storage cell transmits a signal to output unit, data storage cell
Transmit a signal to display, thus the input of complete pair signals, store, process, export and by being converted to numeral or figure
Shape is shown in display.
Temperature Feedback module 41 includes infrared temperature sensor, the first single-chip microcomputer 80C51 and the first AD conversion unit, logical
Cross infrared temperature sensor the analogue signal of temperature is acquired, then believed by the simulation to gathering of first AD conversion unit
Number carry out analog digital conversion, the digital signal being converted to is delivered to the first single-chip microcomputer 80C51, and by the first single-chip microcomputer
The USB port of 80C51 is connected with the input block of computer control module, by the computer control module process to signal,
Temperature information is shown on display at last, monitors the variations in temperature of microgranule 31 in real time.
Position feedback module 21 includes ultrasonic position sensor, second singlechip 80C51 and the second AD conversion unit,
By ultrasonic position sensor, the analogue signal of position is acquired, then by second AD conversion unit mould to gathering
Intend signal and carry out analog digital conversion, the digital signal being converted to is delivered to second singlechip 80C51, and passes through second singlechip
The USB port of 80C51 is connected with the input block of computer control module, by the computer control module process to signal,
Positional information is shown on display at last, and microgranule 31 is carried out real-time positioning.
Ultrasonic standing wave suspending module includes ultrasonic generator, ultrasonic transducer and reflection end, the spoke side of ultrasonic transducer
Constituting resonator cavity with reflection end, ultrasonic generator is connected to the output unit of computer control module, ultrasonic generator by USB
Electrically connect with ultrasonic transducer, utilize the spoke side of ultrasonic transducer to produce the piston type vibration of high frequency, formation sound in media as well
, and on sound-wave path place reflection end, make acoustic reflection return and incidence wave be overlapped mutually, regulation radiation end face with
Distance between reflection end face, is allowed to the integral multiple into ultrasound wave half-wavelength, and incidence wave is the most in resonator cavity with echo
Secondary superposition forms high intense standing wave field, and forms radiated sound field, the object being placed in standing-wave sound field under the effect of sound radiation pressure,
Reach suspended state.The resonator cavity of the present embodiment is ultrasonic transducer radiation end face 11 and the space of reflection end 51 composition.Ultrasonic
Generator is tuned mating with ultrasonic transducer, and the ultrasound wave launched after coupling is in radiation end face 11 and reflection end face 51 shape
Form standing wave in the resonator cavity become, according to standing wave suspension technology, diameter is less than the microgranule stable suspersion of half wavelength.Wherein surpass
Acoustic generator power is 1000W, and frequency is 45KHz, and transducer spoke side 11 and reflection end 51 are plane.
Ultrasonic dynamic focusing heating module is made up of multichannel signal ultrasonic generator and ultrasound transducer array 61, and multiple tracks is believed
Number ultrasonic generator realizes communication by CAN with the output unit of computer control module and is connected, ultrasonic of multichannel signal
Raw device electrical connection ultrasound transducer array, the piezoelectricity array element of multichannel signal ultrasound transducer array 61 is distributed as 16 × 16 plane squares
Shape is distributed, and single array element is size 3 × 3mm rectangle, array element distance 2mm, and single array element power is 2W, frequency 1.5MHz.According to
The position of microgranule and temperature, based on phased delay and focusing technology, control multichannel signal ultrasonic generator and ultrasound transducer array
Voice segment is heated by the ultrasound wave launched to the region at microgranule place.
The heating means of particle suspension dynamic focusing heating system based on the present embodiment, heating microgranule 31 is sphere diameter 3mm
Room temperature solid tin bismuth alloy, fusing point is 58 degree, specifically comprises the following steps that
(1) computer control module controls ultrasonic generator and ultrasonic transducer, ultrasonic generator and ultrasonic transducer tune
Give off the first ultrasound wave after humorous coupling, be ultrasound wave half by the distance adjusting transducer radiation end face 11 and reflection end face 51
The integral multiple of individual wavelength, the first ultrasound wave forms standing wave in resonator cavity, places in resonator cavity by sn-bi alloy microgranule 31, pass through
Vertical radiation power in resonator cavity and horizontal restoring force by sn-bi alloy particle suspension in standing wave point position；
(2) temperature-measuring module 21 and the temperature of position measuring module 41 real time scan sn-bi alloy microgranule 31 and position are believed
Breath sends computer control module to；
(3) computer control module controls multichannel signal transducer according to temperature and the positional information of sn-bi alloy microgranule 31
Array 61 sends the second ultrasound wave, and sn-bi alloy microgranule 31 is focused heating, and when temperature reaches 60 degree, computer controls
Module cuts off multichannel signal transducer array 61 control signal, and heating stops, when needs suspend stopping, by computer control
Module cuts off the control signal of ultrasonic transducer, and stopping is suspended by microgranule.
Embodiment two:
As shown in Figure 4, the particle suspension dynamic focusing heating system of the present embodiment is with the difference of embodiment one:
Transducer spoke side 12 is plane, and reflection end 52 is concave spherical surface, and radiation end face 12 increases with the distance of reflection end face 52；Multiple tracks
The piezoelectricity array element of signal ultrasound transducer array 62 is distributed as 32 × 32 planar rectangular distributions, and single array element is size 3 × 3mm square
Shape, array element distance 2mm, single array element power is 2W, frequency 1.5MHz, and other structure is with reference to embodiment one.
The heating means of particle suspension dynamic focusing heating system based on the present embodiment, two heating microgranules 32 are sphere diameter
The room temperature solid tin bismuth alloy of 3mm, fusing point is 58 degree, specifically comprises the following steps that
(1) computer control module controls ultrasonic generator and ultrasonic transducer, ultrasonic generator and ultrasonic transducer tune
Give off the first ultrasound wave after humorous coupling, be ultrasound wave half by the distance adjusting transducer spoke side 12 and reflection end face 62
The integral multiple of wavelength, the first ultrasound wave forms standing wave in resonator cavity, and two sn-bi alloy microgranules 32 are placed resonator cavity respectively
In, by the vertical radiation power in resonator cavity and horizontal restoring force, sn-bi alloy microgranule 32 is suspended in respectively different standing wave points
Position；
(2) temperature-measuring module 22 and the temperature of position measuring module 42 real time scan sn-bi alloy microgranule 32 and position are believed
Breath sends computer control module to；
(3) computer control module controls multichannel signal transducer according to temperature and the positional information of sn-bi alloy microgranule 32
Array 62 sends the second ultrasound wave, and sn-bi alloy microgranule 32 is focused heating, when temperature reaches 60 degree, computer control respectively
Molding block cuts off multichannel signal transducer array 62 control signal, and heating stops, when needs suspend stopping, by computer control
Molding block cuts off the control signal of ultrasonic transducer, and stopping is suspended by microgranule.
Embodiment three:
As it is shown in figure 5, the difference of the particle suspension dynamic focusing heating system of the present embodiment and embodiment one is:
Ultrasonic generator power is 2000W, and frequency is 45KHz, and transducer spoke side 13 and reflection end 53 are plane；Multichannel signal surpasses
The piezoelectricity array element of acoustic transducer array 63 is distributed as 64 × 64 planar rectangular distributions, and single array element is size 3 × 3mm rectangle, battle array
Unit's spacing 2mm, single array element power is 3W, frequency 5MHz, and other structure is with reference to embodiment one.
The heating means of particle suspension dynamic focusing heating system based on the present embodiment, heating microgranule 32 is sphere diameter 8mm
Room temperature solid tin bismuth alloy, fusing point is 58 degree, specifically comprises the following steps that
(1) computer control module controls ultrasonic generator and ultrasonic transducer, ultrasonic generator and ultrasonic transducer tune
Give off the first ultrasound wave after humorous coupling, be ultrasound wave half by the distance adjusting transducer spoke side 13 and reflection end face 53
The integral multiple of wavelength, the first ultrasound wave forms standing wave in resonator cavity, is positioned in resonator cavity by sn-bi alloy microgranule 33, passes through
Vertical radiation power in resonator cavity and horizontal restoring force by sn-bi alloy particle suspension in standing wave point position,
(2) temperature-measuring module 23 and the temperature of position measuring module 43 real time scan sn-bi alloy microgranule 33 and position are believed
Breath sends computer control module to,
(3) computer control module controls multiterminal signal transducers according to temperature and the positional information of sn-bi alloy microgranule 33
Array 63 sends scan-type sinusoidal signal, and the second focusing ultrasonic wave realizes stannum bismuth respectively through p1, p2, p3, p4, p5 position
The sinusoidal focal heat of alloy particle 33 interior zone, when temperature reaches 60 degree, computer control module cuts off multiple tracks
Signal transducers array 63 control signal, heating stops.
Above-mentioned input block, data storage cell, data processing unit, output unit, controller, display, phased prolong
Time focusing technology and second singlechip 80C51 belong to prior art.
Above the preferred embodiments of the present invention and principle are described in detail, to those of ordinary skill in the art
Speech, the thought provided according to the present invention, detailed description of the invention will change, and these changes also should be regarded as the present invention
Protection domain.
Claims (8)
1. a particle suspension dynamic focusing heating system, it is characterised in that include computer control module, Temperature Feedback mould
Block, position feedback module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module, described computer control module communication
Connect described position feedback module, Temperature Feedback module, ultrasonic standing wave suspending module, ultrasonic dynamic focusing heating module；
Described ultrasonic standing wave suspending module includes that ultrasonic generator, ultrasonic transducer and reflection end, described ultrasonic generator are electrically connected
Connect ultrasonic transducer, the spoke side of described ultrasonic transducer and reflection end and constitute resonator cavity；
Described ultrasonic dynamic focusing heating module includes multichannel signal ultrasonic generator and ultrasound transducer array, and described multiple tracks is believed
Number ultrasonic generator electrical connection ultrasound transducer array.
Particle suspension dynamic focusing heating system the most according to claim 1, it is characterised in that described computer controls mould
Block includes input block, data storage cell, data processing unit, output unit, controller and display, described input block
Use interface to be connected with data storage cell, described data storage cell and data processing unit, output unit, controller, show
Show that device uses interface to connect.
Particle suspension dynamic focusing heating system the most according to claim 2, it is characterised in that described output unit uses
USB connects described ultrasonic generator.
Particle suspension dynamic focusing heating system the most according to claim 2, it is characterised in that described output unit uses
CAN is used to connect described multichannel signal ultrasonic generator.
Particle suspension dynamic focusing heating system the most according to claim 2, it is characterised in that described Temperature Feedback module
Including infrared temperature sensor, the first AD conversion unit and the first single-chip microcomputer 80C51, described first single-chip microcomputer 80C51 uses
USB connects described input block.
Particle suspension dynamic focusing heating system the most according to claim 2, it is characterised in that described position feedback module
Including ultrasonic position sensor, the second AD conversion unit and second singlechip 80C51, described second singlechip 80C51 adopts
Described input block is connected with USB.
7. according to the particle suspension dynamic focusing heating system according to any one of claim 1-6, it is characterised in that described instead
The end face penetrating end is plane or concave spherical surface.
8. heating means based on the particle suspension dynamic focusing heating system described in claim 7, it is characterised in that include with
Lower step:
(1) utilizing computer control module to start ultrasonic standing wave suspending module, described ultrasonic generator tunes with ultrasonic transducer
The first ultrasound wave launched after coupling forms standing wave in resonator cavity, is placed in resonator cavity by microgranule, makes particle suspension；
(2) after microgranule stable suspersion, position and the temperature of microgranule are carried out by described position feedback module and Temperature Feedback module
Monitoring in real time, then transmits position and temperature signal to computer control module；
(3) computer control module is utilized to start ultrasonic dynamic focusing heating module, according to position and the temperature of described microgranule, base
In phased delay and focusing technology, the second focusing ultrasonic wave that multichannel signal ultrasonic generator and ultrasound transducer array are launched in
Described microgranule, thus described microgranule is carried out dynamic focusing heating；
(4) when Temperature Feedback module monitors to microgranule is heated to temperature required, described computer control module controls ultrasonic
Dynamic focusing heating module is out of service.
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| CN108897265A (en) * | 2018-09-29 | 2018-11-27 | 吉林大学 | Based on concave surface supersonic array without container suspension control device |
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