CN105562397A - Complex-frequency ultrasonic cleaning device - Google Patents
Complex-frequency ultrasonic cleaning device Download PDFInfo
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- CN105562397A CN105562397A CN201610092157.0A CN201610092157A CN105562397A CN 105562397 A CN105562397 A CN 105562397A CN 201610092157 A CN201610092157 A CN 201610092157A CN 105562397 A CN105562397 A CN 105562397A
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- 238000004506 ultrasonic cleaning Methods 0.000 title claims abstract description 37
- 239000000919 ceramic Substances 0.000 claims abstract description 74
- 239000004065 semiconductor Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
Abstract
The invention relates to the field of household appliance cleaning equipment and in particular relates to a complex-frequency ultrasonic cleaning device which comprises a processor, a first push-pull circuit, a second push-pull circuit, a third push-pull circuit, a first piezoelectric ceramic piece, a second piezoelectric ceramic piece and a third piezoelectric ceramic piece, wherein the processor is respectively connected with the first piezoelectric ceramic piece through the first push-pull circuit, connected with the second piezoelectric ceramic piece through the second push-pull circuit, and connected with the third piezoelectric ceramic piece through the third push-pull circuit. The complex-frequency ultrasonic cleaning device generates three ways of non-interfering ultrasonic waves with different frequencies through the processor, and the ultrasonic wave with the first frequency, the ultrasonic wave with the second frequency and the ultrasonic wave with the third frequency mutually coincide, so that the ultrasonic waves with different frequencies can furthest utilize respective wave crests to compensate for wave troughs of each other so as to avoid the standing wave phenomenon, thereby improving the cleaning efficiency and the cleaning effect; and the piezoelectric ceramic pieces are adopted, so that the product volume can be effectively reduced.
Description
Technical field
The present invention relates to household electrical appliances cleaning equipment field, particularly relate to combination frequency ultrasonic cleaning equipment.
Background technology
Ultrasonic wave (Ultrasound) refers to any sound wave or vibration, and its frequency exceedes the most high threshold 20kHz that human ear can hear.Ultrasonic wave is widely used in various fields due to its high frequency characteristics, such as metal defect detection, workpiece cleaning etc.Power ultrasonic can be divided into according to watt level and detect ultrasonic wave.
The clean principle of power ultrasonic: the dirt of ultrasonic wave energy to body surface propagated in a liquid cleans, its principle can be explained by " cavitation " phenomenon." cavitation " intensity that cleaning performance and ultrasonic wave produce in a liquid has close relationship.
Ultrasonic wave is propagated in a liquid by vibration, and when its pressure of sound wave reaches an atmospheric pressure, hyperacoustic power density is about 0.35W/cm, and the hyperacoustic pressure of sound wave peak value at this moment propagated in a liquid just can reach vacuum or negative pressure easily; But be actually and exist without negative pressure appearance, thus produce a very large power in a liquid, fluid molecule drawing crack is become cavity (cavitation nucleus), this cavity is vacuum or closely vacuum.
In addition, this cavity is when signal voltage (or ultrasonic wave pressure) value reaches maximum at next half cycle, crushed due to the increase of ambient pressure, now fluid molecule fierceness collision produces very powerful impulsive force, is clashed into by the dirt of cleaned material surface.
The phenomenon producing shock wave during these countless tiny and intensive bubbles burst is referred to as " cavitation " effect.This cavitation is very easy to produce at the intersection of solid and liquid, thus has unusual cleaning action for the object in the liquid immersed under ultrasonication.
In addition, because ultrasonic wave has the very strong effect penetrating solid, the opposite side surface of cleaned material can be penetrated into, and inner chamber, blind hole, the slit in all immersion media, the dirt of cleaned material surface attachment is peeled off, reaches preferably cleaning performance.
Meanwhile, ultrasonic wave also has emulsification neutralization, can more effectively prevent from being re-attached on cleaned material part by the greasy dirt washed.So this " cavitation " effect is to object surfaces externally and internally in the liquid immersed under ul-trasonic irradiation, such as pipe fitting, casing part etc. all can be cleaned, and this is the importance that Ultrasonic Cleaning is better than other cleaning means.
At present, the main devices of the ultrasonic cleaning apparatus on market is the ultrasonic oscillator be glued at bottom clean container, it produces the ultrasonic wave vibration of fixed frequency under the effect of drive circuit, produces the bubbles of vacuum of cavitation, to clean body surface at the ultrasonic wave of water transmission.
But existing ultrasonic cleaning apparatus often has following defect:
1, single fixed frequency, the vibration frequency that transducer is fixing, cavitation not and easily go into standing wave, causes cleaning effect not good.
2, adopt the powerful ultrasonic transducer of large volume, transformer adopts magnetic core framework structure, affects whole ultrasonic cleaning apparatus, makes its volume bigger than normal.
3, cleaning efficiency is low, is difficult to keep same cleaning efficiency in the different depth of water.
Summary of the invention
Based on this, be necessary, for how to improve cleaning efficiency and cleaning performance and how to reduce the problems such as small product size, to provide a kind of combination frequency ultrasonic cleaning equipment.
A kind of combination frequency ultrasonic cleaning equipment, comprising: processor, the first push-pull circuit are to the 3rd push-pull circuit, the first piezoelectric ceramic piece to the 3rd piezoelectric ceramic piece;
Described processor is connected with described first piezoelectric ceramic piece respectively by described first push-pull circuit, is connected with described second piezoelectric ceramic piece by described second push-pull circuit, is connected with described 3rd piezoelectric ceramic piece by described 3rd push-pull circuit;
Described first piezoelectric ceramic piece is for generation of the ultrasonic wave of first frequency, and described second piezoelectric ceramic piece is for generation of the ultrasonic wave of second frequency, and described 3rd piezoelectric ceramic piece is for generation of the ultrasonic wave of the 3rd frequency.
Wherein in an embodiment, also comprise the first feedback circuit to the 3rd feedback circuit;
Described processor is connected with described first piezoelectric ceramic piece respectively by described first feedback circuit, is connected with described second piezoelectric ceramic piece by described second feedback circuit, is connected with described 3rd piezoelectric ceramic piece by described 3rd feedback circuit;
Described processor adjusts hyperacoustic power of described first frequency respectively according to described first feedback circuit, hyperacoustic power of described second frequency is adjusted, according to hyperacoustic power of described 3rd frequency of described 3rd feedback circuit adjustment according to described second feedback circuit.
Wherein in an embodiment, also comprise rectification circuit, the output of described rectification circuit is connected with described processor, described first push-pull circuit, described second push-pull circuit, described 3rd push-pull circuit respectively.
Wherein in an embodiment, described first push-pull circuit comprises the first totem-pote circuit, the second totem-pote circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor and the first transformer;
Described first totem-pote circuit connects described processor and described first metal-oxide-semiconductor respectively, and described second totem-pote circuit connects described processor and described second metal-oxide-semiconductor respectively;
Described first metal-oxide-semiconductor is connected with the direct-flow input end of described first transformer, and described second metal-oxide-semiconductor is connected with another direct-flow input end of described first transformer, and described first transformer is also connected with described first piezoelectric ceramic piece.
Wherein in an embodiment, described first transformer comprises two direct-flow input ends, ac input end and two ac output ends,
Described first metal-oxide-semiconductor is connected with direct-flow input end described in, and described second metal-oxide-semiconductor is connected with direct-flow input end described in another, described ac input end for connecting external communication electricity,
Described in described first piezoelectric ceramic piece and two, ac output end forms loop.
Wherein in an embodiment, described in described first piezoelectric ceramic piece and two, between ac output end, be also in series with the first inductance.
Wherein in an embodiment, also comprise body, described body is provided with groove and installation cavity, and described groove is used for accommodating aqueous water,
Described processor, described first push-pull circuit are arranged in described installation cavity to described 3rd push-pull circuit, described first piezoelectric ceramic piece to described 3rd piezoelectric ceramic piece.
Wherein in an embodiment, described first piezoelectric ceramic piece, described second piezoelectric ceramic piece and described 3rd piezoelectric ceramic piece are uniformly distributed and abut described bottom portion of groove.
Wherein in an embodiment, described body is the hollow circuit cylinder body structure of a side opening.
Wherein in an embodiment, described body is the cube structure of hollow one side opening.
Above-mentioned combination frequency ultrasonic cleaning equipment, produced by processor that three tunnels do not interfere with each other, the ultrasonic wave of different frequency, and the ultrasonic wave of the ultrasonic wave of the ultrasonic wave of first frequency, second frequency and the 3rd frequency overlaps, make the trough that can compensate the other side between three to greatest extent with respective crest, to avoid standing wave phenomena, thus improve cleaning efficiency and cleaning performance, and adopt piezoelectric ceramic piece effectively can reduce small product size.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention combination frequency ultrasonic cleaning equipment;
Fig. 2 is the waveform schematic diagram that the independent waveform schematic diagram of the ultrasonic wave of one embodiment of the invention first frequency, second frequency and the 3rd frequency and three overlap;
Fig. 3 is the structural representation of another embodiment of the present invention combination frequency ultrasonic cleaning equipment;
Fig. 4 is the electrical block diagram of one embodiment of the invention combination frequency ultrasonic cleaning equipment;
Fig. 5 is the structural representation of another embodiment of the present invention combination frequency ultrasonic cleaning equipment.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
It should be noted that, when element is called as " being fixed on ", " being arranged at " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Refer to Fig. 1, it is the structural representation of one embodiment of the invention combination frequency ultrasonic cleaning equipment, and combination frequency ultrasonic cleaning equipment 10 comprises: processor 100, first push-pull circuit 210, second push-pull circuit 220, the 3rd push-pull circuit 230, first piezoelectric ceramic piece 310, second piezoelectric ceramic piece 320, the 3rd piezoelectric ceramic piece 330.
Processor 100 is connected with the first piezoelectric ceramic piece 310 respectively by the first push-pull circuit 210, is connected with the second piezoelectric ceramic piece 320 by the second push-pull circuit 220, is connected with the 3rd piezoelectric ceramic piece 330 by the 3rd push-pull circuit 230.
First piezoelectric ceramic piece 310 is for generation of the ultrasonic wave of first frequency, and the second piezoelectric ceramic piece 320 is for generation of the ultrasonic wave of second frequency, and the 3rd piezoelectric ceramic piece 330 is for generation of the ultrasonic wave of the 3rd frequency.
The ultrasonic wave of the ultrasonic wave of first frequency, the ultrasonic wave of second frequency and the 3rd frequency overlaps, and hyperacoustic crest of hyperacoustic crest of second frequency and the 3rd frequency is different, and between hyperacoustic adjacent two crests of first frequency.
Produced by processor that three tunnels do not interfere with each other, the ultrasonic wave of different frequency, and the ultrasonic wave of the ultrasonic wave of the ultrasonic wave of first frequency, second frequency and the 3rd frequency overlaps, make the trough that can compensate the other side between three to greatest extent with respective crest, to avoid standing wave phenomena, thus improve cleaning efficiency and cleaning performance, and adopt piezoelectric ceramic piece effectively can reduce small product size.
It should be noted that, being used in the present invention cleaning the ultrasonic wave produced is power ultrasonic, only needs to send, and does not need to receive echo.
For producing high-precision PWM (pulse width modulation) waveform, such as, processor 100 is pulse width modulation generation control chip.So, by pulse width modulation generation control chip to produce multiple high-precision ultrasonic frequency.
Refer to Fig. 2, it is the waveform schematic diagram that the independent waveform schematic diagram of the ultrasonic wave of one embodiment of the invention first frequency, second frequency and the 3rd frequency and three overlap, known, the ultrasonic wave of 25K ~ 28KHz frequency has the advantages such as cavitation intensity is high, cleansing power is strong.
In conjunction with the gravity frequency of the ultrasonic oscillator of main flow on market, in the present embodiment, the ultrasonic wave f1 of first frequency adopts 26KHz, namely by processor die draw up 26KHz dominant frequency sound wave propagate in liquid medium time, form standing wave waveform at depth direction.
It is pointed out that crest represents sound pressure amplitudes maximum, namely cavitation is the strongest; Trough then represents the minimum place of sound pressure amplitudes, i.e. cavitation the weakest point.When utilizing single ultrasonic frequency to clean, what be in trough place just be can not get effective cleaning by cleaning workpiece.
Therefore, guaranteeing that the horizontal range of dominant frequency sound wave crest opposed valleys is constant, when namely sonic wave amplitude is constant, the ultrasonic wave of second frequency, the 3rd frequency is produced again by processor, and the ultrasonic wave of first frequency, second frequency and the 3rd frequency is coincided together, make the trough that can compensate the other side between three to greatest extent with respective crest.
So, by the mode of software simulation by three kinds of frequency compounding together after, almost there is no standing wave phenomena, the uniformity that greatly even ultrasonic sound field distributes in media as well, improve cleaning efficiency and cleaning performance.
Refer to Fig. 3, it is the structural representation of another embodiment of the present invention combination frequency ultrasonic cleaning equipment 20, and in the present embodiment, combination frequency ultrasonic cleaning equipment 20 also comprises the first feedback circuit 410, second feedback circuit 420 and the 3rd feedback circuit 430.
Processor 100 is connected with the first piezoelectric ceramic piece 310 respectively by the first feedback circuit 410, is connected with the second piezoelectric ceramic piece 320 by the second feedback circuit 420, is connected with the 3rd piezoelectric ceramic piece 330 by the 3rd feedback circuit 430.
Processor 100 adjusts hyperacoustic power of first frequency respectively according to the first feedback circuit 410, adjust hyperacoustic power of second frequency according to the second feedback circuit 420, adjusts hyperacoustic power of the 3rd frequency according to the 3rd feedback circuit 430.
The PWM dutycycle being appreciated that conventional ultrasound wave circuit is fixed value, and in Ultrasonic Cleaning, the load current of the degree of depth on ultrasonic cleaning equipment of water has impact, and namely water is darker, and load is larger.Therefore, when keeping same cavitation and cleaning efficiency, the load current of needs is larger.
In the present embodiment, sample to load current, processor according to the dutycycle of the feedback quantity adjustment PWM of each feedback circuit, thus achieves the adjustment of load current size, makes cleaning device can produce stable ultrasonic wave under all types of situations.
For ease of power supply, combination frequency ultrasonic cleaning equipment also comprises rectification circuit.The input of rectification circuit connects external communication electricity.The output of rectification circuit is connected with processor 100, first push-pull circuit 210, second push-pull circuit 220, the 3rd push-pull circuit 230 respectively.
So, by rectification circuit be processor 100, first push-pull circuit 210, second push-pull circuit 220, the 3rd push-pull circuit 230 powers, and improves the stability of ultrasonic cleaning equipment work.
In the present embodiment, by the control of control processor 100, first piezoelectric ceramic piece produces the ultrasonic wave of the first frequency of 26KHz, and the second piezoelectric ceramic piece produces the ultrasonic wave of the second frequency of 47KHz, and the 3rd piezoelectric ceramic piece produces the ultrasonic wave of the 3rd frequency of 88KHz.
Refer to Fig. 4, it is the electrical block diagram of one embodiment of the invention combination frequency ultrasonic cleaning equipment, and the first push-pull circuit 210 comprises the first totem-pote circuit 211, second totem-pote circuit 212, first metal-oxide-semiconductor M11, the second metal-oxide-semiconductor M12 and the first transformer T1.
First totem-pote circuit 211 is connection handling device 100 and the first metal-oxide-semiconductor M11 respectively, and the second totem-pote circuit 212 is connection handling device 100 and the second metal-oxide-semiconductor M12 respectively.
First metal-oxide-semiconductor M11 is connected with the direct-flow input end of the first transformer T1, and the second metal-oxide-semiconductor M12 is connected with another direct-flow input end of the first transformer T1, and the first transformer T1 is also connected with the first piezoelectric ceramic piece 310.
As shown in Figure 4, specific in the present embodiment, the first totem-pote circuit 211 comprises NPN type triode Q11, Q13, PNP type triode Q12, Q14.The base stage of Q11 with Q12 is connected and is connected with processor, and the emitter stage of Q11 is connected with the emitter stage of Q12 and is connected with the G pole of M11.The colelctor electrode of Q11 connects 12V dc source.The grounded collector of Q12.
The base stage of Q13 with Q14 is connected and is connected with processor, and the emitter stage of Q13 is connected with the emitter stage of Q14 and is connected with the G pole of M12.The colelctor electrode of Q13 connects 12V dc source.The grounded collector of Q14.
The D pole of M11 is connected with the first transformer T1, S pole ground connection.The D pole of M12 is connected with the first transformer T1, S pole ground connection.First transformer T1 is also connected with the live wire L of outside.
Specific in the present embodiment, first transformer T1 comprises two direct-flow input ends, ac input end and two ac output ends, first metal-oxide-semiconductor M11 is connected with a direct-flow input end, and the second metal-oxide-semiconductor M12 is connected with another direct-flow input end, and ac input end is for connecting external communication electricity.First piezoelectric ceramic piece 310 and two ac output ends form loop.In one embodiment, between the first piezoelectric ceramic piece 310 and two ac output ends, be also in series with the first inductance L 11.
It should be noted that, due to the second push-pull circuit 220 and the circuit structure of the 3rd push-pull circuit 230 and the circuit structure of the first push-pull circuit 210 similar, therefore the concrete annexation of the circuit of the second push-pull circuit 220 and the 3rd push-pull circuit 230 can refer to Fig. 4, repeats no more herein.
Refer to Fig. 5, it is the structural representation of another embodiment of the present invention combination frequency ultrasonic cleaning equipment, and combination frequency ultrasonic cleaning equipment also comprises body 400.Such as, body 400 is provided with groove 410 and installation cavity 420.In the present embodiment, groove 410 is equipped with aqueous water 50.
Processor 100, first push-pull circuit 210 is arranged in installation cavity 420 to the 3rd push-pull circuit 230, first piezoelectric ceramic piece 310 to the 3rd piezoelectric ceramic piece 330.
First piezoelectric ceramic piece 310, second piezoelectric ceramic piece 320 and the 3rd piezoelectric ceramic piece 330 are uniformly distributed and abut bottom groove 410.In one embodiment, body 400 is the hollow circuit cylinder body structure of a side opening.In one embodiment, body 400 is the cube structure of hollow one side opening.
Below for a concrete cleaning process, the present invention is further illustrated:
First, groove loads appropriate moisture, and will the home appliance of cleaning be needed to place in a groove, preferably, the part of being cleaned by the needs of home appliance immerses in aqueous water completely.
Then, switch on power, start treatment device to make the first piezoelectric ceramic piece, the second piezoelectric ceramic piece, the 3rd piezoelectric ceramic piece produces that three tunnels do not interfere with each other respectively, the ultrasonic wave of different frequency to be to clean home appliance.
Finally, after exceeding default conduction time, deenergization, takes out home appliance, and cleaning completes.
The invention has the advantages that: produced by processor that three tunnels do not interfere with each other, the ultrasonic wave of different frequency, and the ultrasonic wave of the ultrasonic wave of the ultrasonic wave of first frequency, second frequency and the 3rd frequency overlaps, make the trough that can compensate the other side between three to greatest extent with respective crest, to avoid standing wave phenomena, thus improve cleaning efficiency and cleaning performance, and adopt piezoelectric ceramic piece effectively can reduce small product size.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a combination frequency ultrasonic cleaning equipment, is characterized in that, comprising: processor, the first push-pull circuit are to the 3rd push-pull circuit, the first piezoelectric ceramic piece to the 3rd piezoelectric ceramic piece;
Described processor is connected with described first piezoelectric ceramic piece respectively by described first push-pull circuit, is connected with described second piezoelectric ceramic piece by described second push-pull circuit, is connected with described 3rd piezoelectric ceramic piece by described 3rd push-pull circuit;
Described first piezoelectric ceramic piece is for generation of the ultrasonic wave of first frequency, and described second piezoelectric ceramic piece is for generation of the ultrasonic wave of second frequency, and described 3rd piezoelectric ceramic piece is for generation of the ultrasonic wave of the 3rd frequency.
2. combination frequency ultrasonic cleaning equipment according to claim 1, is characterized in that, also comprises the first feedback circuit to the 3rd feedback circuit;
Described processor is connected with described first piezoelectric ceramic piece respectively by described first feedback circuit, is connected with described second piezoelectric ceramic piece by described second feedback circuit, is connected with described 3rd piezoelectric ceramic piece by described 3rd feedback circuit;
Described processor adjusts hyperacoustic power of described first frequency respectively according to described first feedback circuit, hyperacoustic power of described second frequency is adjusted, according to hyperacoustic power of described 3rd frequency of described 3rd feedback circuit adjustment according to described second feedback circuit.
3. combination frequency ultrasonic cleaning equipment according to claim 2, it is characterized in that, also comprise rectification circuit, the output of described rectification circuit is connected with described processor, described first push-pull circuit, described second push-pull circuit, described 3rd push-pull circuit respectively.
4. combination frequency ultrasonic cleaning equipment according to claim 3, is characterized in that, described first push-pull circuit comprises the first totem-pote circuit, the second totem-pote circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor and the first transformer;
Described first totem-pote circuit connects described processor and described first metal-oxide-semiconductor respectively, and described second totem-pote circuit connects described processor and described second metal-oxide-semiconductor respectively;
Described first metal-oxide-semiconductor is connected with the direct-flow input end of described first transformer, and described second metal-oxide-semiconductor is connected with another direct-flow input end of described first transformer, and described first transformer is also connected with described first piezoelectric ceramic piece.
5. combination frequency ultrasonic cleaning equipment according to claim 1, is characterized in that, described first transformer comprises two direct-flow input ends, ac input end and two ac output ends,
Described first metal-oxide-semiconductor is connected with direct-flow input end described in, and described second metal-oxide-semiconductor is connected with direct-flow input end described in another, described ac input end for connecting external communication electricity,
Described in described first piezoelectric ceramic piece and two, ac output end forms loop.
6. combination frequency ultrasonic cleaning equipment according to claim 5, is characterized in that, is also in series with the first inductance described in described first piezoelectric ceramic piece and two between ac output end.
7. combination frequency ultrasonic cleaning equipment according to claim 1, is characterized in that, also comprise body, and described body is provided with groove and installation cavity, and described groove is used for accommodating aqueous water,
Described processor, described first push-pull circuit are arranged in described installation cavity to described 3rd push-pull circuit, described first piezoelectric ceramic piece to described 3rd piezoelectric ceramic piece.
8. combination frequency ultrasonic cleaning equipment according to claim 7, is characterized in that, described first piezoelectric ceramic piece, described second piezoelectric ceramic piece and described 3rd piezoelectric ceramic piece are uniformly distributed and abut described bottom portion of groove.
9. combination frequency ultrasonic cleaning equipment according to claim 7, is characterized in that, described body is the hollow circuit cylinder body structure of a side opening.
10. combination frequency ultrasonic cleaning equipment according to claim 7, is characterized in that, described body is the cube structure of hollow one side opening.
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| CN105871224A (en) * | 2016-06-07 | 2016-08-17 | 深圳市智水小荷技术有限公司 | Ultrasonic power circuit and ultrasonic cleaning equipment |
| CN106269694A (en) * | 2016-09-05 | 2017-01-04 | 西北农林科技大学 | Variable ratio frequency changer portable supersonic washer |
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