CN1468666A - Supersonic cleaning method with supersonic wave distributed in fluid - Google Patents

Abstract

Supersonic wave is made to distribute inside fluid, and the supersonic vibration board with vibration region and isolation region is used to produce in fluid a supersonic moving region and a rest region, which produce relative action to matter to be cleaned. The present invention reaches excellent detergent effect with its supersonic wave. The supersonic vibration regions and the isolating regions may be arranged repeatedly and the vibrating regions may be in concave surface to collect supersonic wave, and these increases the size of the relative action area and the strength of transmitted supersonic wave.

Description

Ultrasonic wave is distributed in and realizes ultrasonic cleaning in the fluid

The present invention relates to the technical field of in fluid, utilizing ultrasonic wave that object is cleaned.

Usually ultrasonic wave clean principle in fluid ultrasonic wave by emission source to around even propagate ultrasound waves, or it is consistent to make that by various reflections ultrasonic intensity obtains size, each position of cleaning workpiece can reach promising result like this.

In this ultrasonic wave cleaned, water or cleaning fluid were made fluid, and it can only clean metal or boardy product such as handicraft, just were fit to the article that cleaning and the water or the cleaning fluid velocity of sound differ greatly, and were 2-3 times of the velocity of sound of water as metal.During ultrasonic wave is propagated like this, produce a velocity of sound difference formation relativity at fluid and clean metal surface, this acts on existing mechanical function and has the acoustics effect simultaneously, and it produces relativity power and metal surface cavitation cavitation impacts, can reach a desirable cleaning performance.

When cleaning the velocity of sound near cleaning fluid object or flexible material with ultrasonic wave, during daily especially dress material, the upper and lower elastic vibration of ultrasonic wave is cleaned thing also along with upper and lower elastic vibration.Scavenger surface or cleaning thing inside do not form relativity, both there be not mechanical function, there is not the acoustics effect yet, have only a small amount of cavitation bubble to impact, do not destroy how many scavenger surface dirts, thing lacks and the relativity of cleaning fluid because clean, and cleans the upper and lower surface of thing simultaneously and is subjected to tiing up approximately of cleaning fluid surface pressure, be difficult to peel off dirt, so ultrasonic wave cleans above-mentioned object poor effect at present.

Ultrasonic wave is evenly distributed on and is difficult in the fluid realize and the cleaning of fluid sound speed near object or flexible material (the not daily dress material of thing).

This technology is to utilize the ultrasonic wave high directivity, and it can form certain intensity at subsection very, and it can be distributed in fluid according to certain rules, and the ultrasonic wave motor area can reach maximum in fluid like this, and the quiescent centre is near zero, and power has obvious line of demarcation.Ultrasonic wave is distributed in the inner a lot of strong and weak relativities district that forms automatically of fluid, and its existing mechanical function also has the acoustics effect, will clean thing and be placed on and produce better cleaning effect in the fluid.

The object of the invention is utilized ultrasonic wave different distributions in fluid, realizes cleaning near fluid sound speed object or soft object, and ultrasonic wave location mode in fluid is provided.

Ultrasonic wave is distributed in the fluid, mainly forms vibrating area and isolated area realization vibration by the ultrasonic vibration plate.The ultrasonic vibration plate is connected with ultrasonic plate transducer by machinery, and transducer is directly delivered to oscillating plate with acoustic energy.

The ultrasonic vibration plate with the transducer connected mode can be with bolt, bravely connect or be cast in, also can stick in together with having certain intensity glue.Transducer is with one or more, and a plurality of transducers must frequency, amplitude is identical, and a plurality of transducers are connected an oscillating plate.In order to guarantee that ultrasonic vibration plate centre and edge amplitude amount error do not surpass 6%, oscillating plate and transducer mechanical structure intensity must be enough, connect firmly reliable.

Water or cleaning fluid are made fluid, and the ultrasonic vibration plate is positioned at fluid bottom or bottom.The ultrasonic vibration plate is formed the vibration plate vibrates district and is higher than isolated area 1-2 millimeter when the bottom.Ordinary circumstance, the vibrating area width is identical with the isolated area width.Vibrating area and isolated area can be carried out various forms and be repeated to arrange that vibrating area and fluid contact-making surface are concave curved surface.Main ultrasonic wave is decayed in fluid or is met the cleaning thing and reduce hyperacoustic energy, and vibrating area is concave curved surface can measure certain aggtegation in propagate ultrasound waves, and it is identical to guarantee that the cleaning thing bears ultrasonic intensity in the fluid upper and lower position, and it is identical to reach wash degree.It is different with liquid height and supersonic frequency, amplitude different curvature that vibrating area is concave curved surface curvature.Normal design curvature is from the liquid bottom to the liquid level, and liquid level ultrasonic wave effect width is a vibrating area width 2/3rds.Ultrasonic vibration panel vibration district and isolated area width are in 1-50 millimeter scope.Vibrating area and isolated area width increase with ultrasonic frequency, and amplitude increases, and liquid level reduces, and width diminishes: on the contrary frequency is low more, amplitude is more little, liquid level is high more, and it is big that width becomes.Energy density when center ultrasonic energy density reached emission when ultrasonic vibration panel vibration district and isolated area width dimensions limited and guarantee that ultrasonic wave passes to liquid level, isolated area center ultrasonic energy density is lower than launch site ultrasonic energy density 5%.Ultrasonic vibration panel vibration district height is higher than isolated area, and the isolated area height is decided by isolated material and supersonic frequency, amplitude size.The isolated area height is enough to guarantee be delivered on the oscillating plate isolated area ultrasonic energy density and is no more than 4%.Isolated area is made up of soft elastomeric material and porous material, and its interception power of soft elastomeric material is transmitted, and porous material absorbs ultrasonic energy.During not in the bottom, isolated area can hollow out oscillating plate the ultrasonic vibration plate, forms to isolate the ultrasonic wave district in that fluid is following, and vibrating area is the same.Ultrasonic vibration panel vibration district is made up of rigid material, and it directly will vibrate transfer of ultrasonic energy in fluid.

After ultrasonic vibration panel vibration district, isolated area height, width draw, can carry out various forms of arrangements to vibrating area and isolated area.

Ultrasonic vibration panel vibration district, isolated area directly drive fluid and form ultrasonic wave motor area and quiescent centre.Ultrasonic vibration panel vibration district and isolated area be what arrangement make ultrasonic wave motor area and quiescent centre in the fluid according to the arranged distribution of vibration plate vibrates district and isolated area in fluid.

Ultrasonic wave motor area and quiescent centre are filled in the whole fluid in fluid.Form a relativity district between ultrasonic wave motor area and the quiescent centre.The relativity district is filled between whole motor area and the quiescent centre.Ultrasonic wave is distributed in and mainly relies on ultrasonic wave to clean in the relativity district that fluid forms in the fluid.Relativity district range size and what, relativity intensity size directly influences cleaning performance.Relativity district scope is big more many more, and relativity intensity great purge effect more is good more.

Ultrasonic wave is distributed in realizes in the fluid that the ultrasonic cleaning velocity of sound is near fluid object and flexible material (daily cloth).Ultrasonic wave forms the relativity district in fluid, a cleaning material part is in the ultrasonic wave motor area, a part is in the quiescent centre, and a material internal part is vibrated, and a part is static, material internal forms strong relativity, produce the impact of relativity power, shearing force (rubbing power) and cavitation bubble, remove dirt, cooperate slow rotating fluid or oscillating plate again, it is even to make that material internal is subjected to relativity, and the cleaning spot is totally even.

The ultrasonic vibration plate is in fluid bottom or fluid, and folk prescription is to upwards effect, and the object of cleaning is placed in the fluid above the oscillating plate.

But ultrasonic vibration plate continuous operation vibration also can be carried out pulse operation.Sometimes ultrasonic continuous work sound wave is met and is cleaned obvious diffraction of deposits yields and scattering, causes weakening relativity district intensity, at this moment adopts pulsed operation.Pulse can be extenuated acoustic interference, and the burst length must be a unit to finish one-period.The work of ultrasonic vibration plate must guarantee relativity district intensity, and it is good that cleaning performance just can reach.

Ultrasonic wave is distributed in and realizes ultrasonic cleaning in the fluid, remedied even distributed ultrasound cleaning function deficiency, and have unique advantage, be fit to cleaning object close and flexible elongated object and comprise textiless such as cloth commonly used, can reach a reasonable effect with fluid sound speed.

Oscillating plate and vibrating area are made by metal material or alloy rigid material.

Isolated area is made by soft elastomeric material and porous material, (as other soft materials such as rubber, sponges) or hollow out oscillating plate.

Fluid refers generally to liquid, main water or special-purpose cleaning fluid.

Ultrasonic wave operating frequency 〉=20KHz.

Realize to reach satisfied cleaning performance in the ultrasonic wave distribution fluid, be decided by frequency of ultrasonic and amplitude.Frequency high directivity more is good more, and generous more tropism is strong more for amplitude, and motor area and quiescent centre unit are more little, and is good more to cleaning the thing effect.But when noticing that ultrasonic frequency is high, its decay is very big, and thing is cleaned in damage easily simultaneously.

Fig. 1 ultrasonic wave distribution schematic diagram

1-ultrasonic vibration plate 2-fluid 3-ultrasonic wave motor area

5-relativity district, 4-ultrasonic wave quiescent centre

Fig. 2 a ultrasonic vibration plate generalized section

6-vibrating bottom plate 7-vibrating area 8-isolated area

Fig. 2 b ultrasonic vibration plate generalized section

7-vibrating area 9-isolated area

Fig. 2 c ultrasonic vibration panel vibration district generalized section

Fig. 3 (a, b, c, d, e) ultrasonic vibration panel vibration district's distribution floor map

Fig. 3 a roundlet millet cake shape layout drawing

Fig. 3 b linear layout drawing

Fig. 3 c mutually perpendicular lines layout drawing

Fig. 3 d annular layout drawing

Fig. 3 e oblique straight line figure

Ultrasonic wave takes place by ultrasonic vibration plate 1 in Fig. 1 ultrasonic wave distribution schematic diagram, is delivered to fluid 2, forms ultrasonic wave motor area 3 and ultrasonic wave quiescent centre 4 in fluid 2, cleans thing by ultrasonic wave motor area 3 and 4 pairs of ultrasonic wave quiescent centres and forms a relativity district 5.

Fig. 2 a, b ultrasonic vibration plate generalized section.When ultrasonic vibration plate 1 during at fluid 2 base plates, the ultrasonic vibration plate is Fig. 2 a.Ultrasonic vibration plate 1 is made up of vibrating bottom plate 6, vibrating area 7, isolated area 8.Vibrating bottom plate 6, vibrating area 7 usefulness rigid materials are formed, and isolated area 8 is made up of soft elastomeric material and porous material.Rigid material directly transmits ultrasonic wave, and soft elastomeric material weakens the power transmission, and porous material absorbs ultrasonic wave.When ultrasonic vibration plate 1 was positioned at the bottom in fluid 2, ultrasonic vibration plate 1 was Fig. 2 b, was made up of vibrating area 7, isolated area 9.Isolated area 9 hollows out oscillating plate, and fluid 2 does not form ultrasonic vibrations in isolated area 9, does not directly form isolated area.The vibrating area 7 contacting with fluid faces of ultrasonic vibration plate 1 are concave curved surface, as Fig. 2 c vibrating area 7 generalized sections.

Fig. 3 is a ultrasonic vibration panel vibration district layout drawing.Ultrasonic vibration plate 1 is made up of vibrating area 7 and isolated area 8 or 9.Vibrating area 7 and isolated area 8 or 9 repeat to arrange that this just forms vibrating area 7 can be arranged to various figures successively.Fig. 3 (a, b, c, d, e) black matrix position is a vibrating area, and all the other are isolated area.Fig. 3 only lists several frequently seen figure, and actual 1 a kind of figure of use of ultrasonic vibration plate that uses, and there is no need to use several figures simultaneously at an oscillating plate.Fig. 3 a roundlet millet cake shape layout drawing, but point-like is arranged vibrating area 7 also quadrate, rhombus, polygon or petal-shaped.Fig. 3 b linear layout drawing, Fig. 3 c mutually perpendicular lines layout drawing, Fig. 3 d figure figure that is circular layout, Fig. 3 e oblique straight line figure.Ultrasonic vibration plate 1 vibrating area 7 and isolated area 8 or 9 are formed various figures, and with the width sizing of exceeding, disc is that diameter limits size, when limiting minimum dimension and guaranteeing that ultrasonic wave passes to liquid level, and energy density when centre of oscillation ultrasonic energy density reaches emission.Isolated area center ultrasonic energy is lower than launch site energy density 5%.When oscillating plate 1 is that isolated area 9 hollows out oscillating plate under Fig. 2 b isolated area 9 situations, consider that like this 7 of vibrating areas are connected to each other and guarantee vibrating area 7 intensity, so composite figure selects to consider the connection of vibrating area 7.When ultrasonic frequency vibratory was high, the ultrasonic wave propagation attenuation was big, selected figure vibrating area area greater than this class figure of isolated area area.When ultrasonic frequency was low, acoustic interference was big, should select the figure of isolated area area greater than the vibrating area area.

Ultrasonic vibration plate 1 vibrating area 7 and isolated area 8 or 9 produce ultrasonic wave, form ultrasonic wave motor area 3 and quiescent centre 4 at fluid 2, and ultrasonic wave motor area 3 and ultrasonic wave quiescent centre 4 form relativity district 5.Relativity district 5 what, range size, the effect power directly has influence on the cleaning of objects ability.Select vibrating area 7 and isolated area 8 or 9 to form the situation that figure must be considered the active region.

Fluid 2 is a water, operating frequency 40KHz, 0.5 watt/cm of vibrating area 7 ultrasonic energy density ², 30 centimetres of water surface elevations, vibrating area 7 with every height district 8 linear layout drawing 3b, vibrating area 7 is wide 3 centimetres, long 20 centimetres, isolated area 8 is wide 3 centimetres, long 20 centimetres, repeats to arrange 4 successively, water temperature 20 degree Celsius, 100 centimetres of vibrating area 7 sag vertical curve radius of curvature.The ultrasonic continuous vibration, dying the calico that ink is arranged with one carries out cleaning in 2-3 minute, motor area 3 and 4 of quiescent centres at water form relativity district 5, and relativity district 5 forms 20 centimetres of inks of a wide 0.3-0.5 centimeter length with calico every wide about 3 centimetres and thoroughly cleans up.As seen there is fine cleaning performance in relativity district 5.Again a calico that speckles with greasy dirt is cleaned, find to dissolve in very soon in the water, form 20 centimetres of cleaning areas of a plurality of 0.3 centimeter length, along with time lengthening is cleaned the width increase at relativity district 5 greasy dirts.If will slowly turn round 5 minutes from cloth, greasy dirt thoroughly can be cleaned up.

Ultrasonic wave is distributed in the fluid 2, mainly cleans near fluid 2 velocity of sound objects or the daily dress material of flexible material.Ultrasonic vibration plate 1 is made up of vibrating area 7 and isolated area, drives fluid 2, forms ultrasonic wave motor area 3 and ultrasonic wave quiescent centre 4 in fluid 2.When the cleaning thing was placed in the whole fluid 2, object is subjected to motor area 3 and quiescent centre 4 forms 5 effects of relativity districts, and object is in relativity district 5, be subjected to the ultrasonic vibration effect on one side, on one side static, interior of articles and outside are subjected to strong relativity, existing mechanical function has the acoustics effect again.Very fast the disengaging with object of interior of articles and outside dirt enters in the fluid 2, reaches the purpose of cleaning.

Claims (5)

1, ultrasonic wave is distributed in and is used in the fluid cleaning, it is characterized in that taking place ultrasonic wave is made up of vibrating area and isolated area, be delivered to and produce ultrasonic wave motor area and quiescent centre in the fluid, in fluid, form a relativity district between ultrasonic wave motor area and the quiescent centre.

2, according to claim 1: ultrasonic vibration district and isolated area repeat to arrange successively.

3, according to claim 1: ultrasonic wave motor area and quiescent centre repeat to be distributed in the fluid.

4, according to claim 2: the ultrasonic vibration district is made by rigid material, and isolated area is made or vibrating area is hollowed out by soft elastomeric material and porous material.

5, according to claim 2: ultrasonic vibration district contacting with fluid face is concave curved surface.

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