CN106300937A - A kind of air exhauster drive system high-pass filtering circuit of air purifier - Google Patents
A kind of air exhauster drive system high-pass filtering circuit of air purifier Download PDFInfo
- Publication number
- CN106300937A CN106300937A CN201610854527.XA CN201610854527A CN106300937A CN 106300937 A CN106300937 A CN 106300937A CN 201610854527 A CN201610854527 A CN 201610854527A CN 106300937 A CN106300937 A CN 106300937A
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- China
- Prior art keywords
- amplifier
- pole
- resistance
- positive pole
- outfan
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
Abstract
The invention discloses the air exhauster drive system high-pass filtering circuit of a kind of air purifier, main by amplifier P1, amplifier P2, amplifier P3, audion VT, diode D2, diode D3, polar capacitor C6, positive pole negative pole with amplifier P3 after resistance R12 is connected, the polar capacitor C7 of minus earth, and the composition such as Zener diode D4.Present configuration is simple, practical, and input voltage can be carried out multiple times of filtration, can effectively carry out suppressing or eliminating by the low-order harmonic in the DC voltage of input, and the surge current in input voltage can also be suppressed or eliminate, ensure that the effect that the low-order harmonic in the DC voltage of input can be suppressed or eliminate by the present invention.
Description
Technical field
The present invention relates to a kind of filter circuit, specifically, be the air exhauster drive system of a kind of air purifier
Use high-pass filtering circuit.
Background technology
Air purifier is mainly made up of the system such as air exhauster, airstrainer, and its operation principle is: in air purifier
Air exhauster make circulating internal air, the air of pollution by various pollutant being removed after the airstrainer in machine or
Absorption, constantly ionizes air, produces a large amount of anion, sent by gentle breeze fan, forms anion air-flow, reaches cleaning, purifies
The purpose of air.The air exhauster of air purifier the most then needs drive system to provide stable driving electric current for it,
To guarantee the stabilization of speed of air exhauster, even if the effect of circulating internal air is more preferable, air purifier is made preferably to reach
Cleaning, the purpose of purification air.
But, the air exhauster drive system of existing air purifier exists the low-order harmonic electric current in input voltage
Rejection ability is poor, causes the stabilization of speed weak effect of air exhauster, causes air purifier to promoting circulating internal air
Poor effect so that the air purifier cleaning to room air, the poor effect of purification, it is impossible to well meet people
Demand.
Effectively the low-order harmonic electric current in the air exhauster drive system of air purifier can be carried out therefore it provides a kind of
The circuit of suppression is the task of top priority.
Summary of the invention
The air exhauster drive system that it is an object of the invention to overcome existing air purifier exists in input voltage
The poor defect of the rejection ability of low-order harmonic electric current, it is provided that the air exhauster drive system high pass of a kind of air purifier
Filter circuit.
The present invention is achieved through the following technical solutions: the air exhauster drive system high-pass filtering of a kind of air purifier
Circuit, mainly by amplifier P1, amplifier P2, amplifier P3, audion VT, positive pole is connected with the positive pole of amplifier P2, bears
Pole as the polar capacitor C3 of the input of second-order filter circuit, positive pole positive pole with amplifier P2 after resistance R6 is connected,
The polar capacitor C4 of minus earth, positive pole is connected with the negative pole of amplifier P2 after resistance R8, negative pole is defeated with amplifier P2's
Go out after polar capacitor C5, the P pole that is connected of end is connected with the negative pole of amplifier P2 ground connection, N pole after resistance R9 with amplifier
The diode D2 that the outfan of P2 is connected, one end is connected with the positive pole of amplifier P2, the output of the other end and amplifier P2
The resistance R7 that end is connected, one end is connected with the positive pole of amplifier P3, the resistance R10 of other end ground connection, positive pole and amplifier
Polar capacitor C2, the N pole that the positive pole of P2 is connected, negative pole outfan with amplifier P1 after resistance R2 is connected and polarity electricity
Holding the diode D1 that negative pole is connected, P pole base stage with audion VT after resistance R4 is connected of C2, positive pole is after resistance R1
Be connected with the outfan of amplifier P1, polar capacitor C1 that negative pole is connected with the positive pole of amplifier P1, one end and amplifier
The outfan phase of resistance R3, the N pole that the positive pole of P1 is connected, the other end is connected with the outfan of amplifier P3 and amplifier P3
Connect, diode D3 that P pole positive pole with amplifier P3 after resistance R5 is connected, one end is connected with the negative pole of amplifier P3
Connect, inductance L that the other end is connected with the outfan of amplifier P3, positive pole after resistance R11 with the outfan phase of amplifier P3
Connect, the polar capacitor C6 that is connected with the negative pole of amplifier P3 of negative pole, positive pole after resistance R12 with the negative pole phase of amplifier P3
Connect, the polar capacitor C7 of minus earth, and P pole is connected with the outfan of amplifier P3, N pole is as second-order filter circuit
Outfan Zener diode D4 composition；The outfan of described amplifier P2 also positive pole with amplifier P3 is connected；Described
The grounded collector of audion VT, its emitter stage are connected with the negative pole of amplifier P1.
For guaranteeing the practical effect of the present invention, described amplifier P1 and amplifier P2 and amplifier P3 the most preferentially adopts
Realize with OP364 amplifier；The most described audion VT the most preferentially have employed 3AX81 audion and realizes；Described voltage stabilizing
Diode D4 the most preferentially have employed 1N5221B Zener diode and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present configuration is simple, practical, and input voltage can be carried out multiple times of filtration, can be effectively by input
DC voltage in low-order harmonic carry out suppressing or eliminating, and the present invention can also make the intensity of pulse current in electric current increase
By force, ensure that the effect that the low-order harmonic in the DC voltage of input can be suppressed or eliminate by the present invention, can be effective
Guarantee the stability that air exhauster is driven by drive system, make air purifier to the cleaning of room air, purification effect more
Good, make air purifier well meet the demand of people.
(2) surge current in input voltage can be suppressed by the present invention, makes input voltage more steady, thus improves
The effect that DC voltage is processed by the present invention, can effectively guarantee the stability of the DC voltage that the present invention exports.
Accompanying drawing explanation
Fig. 1 is the integrated circuit structural representation of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
As it is shown in figure 1, the present invention is mainly by amplifier P1, amplifier P2, amplifier P3, audion VT, resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12,
Polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, polar capacitor C6, polar capacitor C7,
Diode D1, diode D2, diode D3, Zener diode D4, and inductance L form.
For guaranteeing the practical effect of the present invention, described amplifier P1 and amplifier P2 and amplifier P3 the most preferentially adopts
Realize with OP364 amplifier；The most described audion VT the most preferentially have employed 3AX81 audion and realizes；Described voltage stabilizing
Diode D4 the most preferentially have employed 1N5221B Zener diode and realizes.Meanwhile, the resistance of resistance R1 is 10k Ω, resistance R2～
The resistance of R4 is 100 Ω, and the resistance of resistance R5 is 15k Ω, and the resistance of resistance R6 is 10 Ω, resistance R7, resistance R8 and electricity
The resistance of resistance R9 is 50 Ω, and the resistance of resistance R10 is 15k Ω, and the resistance of resistance R11 is 100k Ω, the resistance of resistance R12
For 1k Ω；It is 10000 μ F that polar capacitor C1, polar capacitor C3 and polar capacitor C6 are its capacitance of filter capacitor, polar capacitor
The capacitance of C2 be 100 μ F, polar capacitor C4 and polar capacitor C7 be its capacitance of charging capacitor be the polar capacitor of 1000 μ F/25V,
The capacitance of polar capacitor C5 is 470 μ F；Diode D1 and diode D3 is 1N5401 diode, and diode D2 is 1N5,408 bis-
Pole is managed；Inductance L is the filter inductance of 100 μ h.
During connection, the positive pole of polar capacitor C3 is connected with the positive pole of amplifier P2, and negative pole is as second-order filter circuit
Input the control current output terminal with the controller of air purifier are connected, and the control electric current of controller output is
12V DC voltage.The positive pole of polar capacitor C4 positive pole with amplifier P2 after resistance R6 is connected, minus earth.Polarity electricity
The positive pole negative pole with amplifier P2 after resistance R8 holding C5 is connected, and negative pole is connected with the outfan of amplifier P2.Two poles
The P pole of pipe D2 be connected with the negative pole of amplifier P2 after ground connection, N pole outfan with amplifier P2 after resistance R9 is connected.
One end of resistance R7 is connected with the positive pole of amplifier P2, and the other end is connected with the outfan of amplifier P2.The one of resistance R10
End is connected with the positive pole of amplifier P3, other end ground connection.The positive pole of polar capacitor C2 is connected with the positive pole of amplifier P2, negative
Pole outfan with amplifier P1 after resistance R2 is connected.
Wherein, the N pole of diode D1 is connected with the negative pole of polar capacitor C2, P pole after resistance R4 with audion VT's
Base stage is connected.The positive pole of polar capacitor C1 outfan with amplifier P1 after resistance R1 is connected, negative pole and amplifier P1
Positive pole be connected.One end of resistance R3 is connected with the positive pole of amplifier P1, and the other end is connected with the outfan of amplifier P3
Connect.The N pole of diode D3 is connected with the outfan of amplifier P3, and P pole positive pole with amplifier P3 after resistance R5 is connected.
One end of inductance L is connected with the negative pole of amplifier P3, and the other end is connected with the outfan of amplifier P3.
Meanwhile, the positive pole of polar capacitor C6 outfan with amplifier P3 after resistance R11 is connected, negative pole and amplifier
The negative pole of P3 is connected.The positive pole of polar capacitor C7 negative pole with amplifier P3 after resistance R12 is connected, minus earth.Surely
The P pole of pressure diode D4 is connected with the outfan of amplifier P3, N pole as second-order filter circuit outfan also and drivetrain
The power supply input pole of system is connected.The outfan of described amplifier P2 also positive pole with amplifier P3 is connected；Described audion
The grounded collector of VT, its emitter stage is connected with the negative pole of amplifier P1.
During work, the controller output 12V of air purifier controls electric current, and this control electric current is through the pole as filter capacitor
Low-order harmonic electric current in input voltage is suppressed by property electric capacity C3, and repressed low-order harmonic electric current is then through the electricity of low resistance
The discharge circuit that resistance R6 and polar capacitor C4 is formed is discharged.By the DC voltage after filtering through high-impedance resistors R7, amplifier P2,
The rejector circuit that polar capacitor C5, diode D2, resistance R8 and resistance R9 are formed, this circuit is to the wave in the voltage of input
Gushing electric current eliminate and suppress, the voltage making input is more steady, and the outfan of the voltage amplified device P2 after process is transferred to
The feedback circuit formed by resistance R5 and diode D3 and resistance R3, the voltage of input is then transferred to amplify by this feedback circuit
Device P1, audion VT, polar capacitor C1, polar capacitor C2, diode D1, resistance R1, resistance R2 and the first of resistance R4 formation
Bandpass filtering amplifying circuit, the amplifier that the amplifier P1 and audion VT of this filter amplification circuit the is formed unidirectional current to input
The pulsewidth of pressure is amplified, and the pulse frequency making voltage is higher, even if the frequency of the low-order harmonic being mixed in DC voltage is simultaneously
Being exaggerated, the filter circuit that the voltage after being amplified by amplifier is then formed through polar capacitor C2 and resistance R2 is filtered, energy
Effectively leaching the low-order harmonic of residual after polar capacitor C3 filters, the most filtered DC voltage is through polar capacitor C2's
It is transferred to after high-impedance resistors R7 carries out current limliting by amplifier P3, inductance L, polar capacitor C6, polar capacitor after positive pole output
The second bandpass filtering amplifying circuit that C7, resistance R11 and resistance R12 are formed, the polar capacitor in this second filter amplification circuit
The low-order harmonic filter that C6 and resistance R11 and inductance L-shaped become carries out filtration again to the DC voltage of input, and will
Filter out after low-order harmonic passes through polar capacitor C7 and resistance R12 current limliting and discharge, finally, after low-order harmonic filter remains
DC voltage amplified device P3 is transferred to drive system after being amplified its pulse current.
Can be seen that present configuration is simple from above-mentioned structure, practical, and can low in input direct voltage
Subharmonic carries out multiple times of filtration, it is thus possible to the low-order harmonic effectively eliminated in voltage, and the first logical filter of band in the present invention
Ripple amplifying circuit and the second bandpass filtering amplifying circuit can also make the pulse in electric current while eliminating low-order harmonic
The intensity enhancing of electric current；Meanwhile, the surge current in input voltage can be suppressed by the present invention, makes input voltage more flat
Surely, thus the present invention can ensure that the effect suppressing the low-order harmonic in DC voltage and surge current or eliminating, and can have
Effect really breaks even and invents the stability of the DC voltage exported, and can effectively improve the effect that air exhauster is driven by drive system
Really, make air purifier to promoting the better of circulating internal air, make air purifier to the cleaning of room air,
The effect purified is more preferable, makes air purifier well meet the demand of people.
According to above-described embodiment, can well realize the present invention.
Claims (4)
1. the air exhauster drive system high-pass filtering circuit of an air purifier, it is characterised in that main by amplifier P1,
Amplifier P2, amplifier P3, audion VT, positive pole is connected with the positive pole of amplifier P2, negative pole is as second-order filter circuit
The polar capacitor C3 of input, positive pole positive pole with amplifier P2 after resistance R6 is connected, the polar capacitor C4 of minus earth,
Positive pole polar capacitor that negative pole is connected, negative pole is connected with the outfan of amplifier P2 with amplifier P2 after resistance R8
C5, P pole be connected with the negative pole of amplifier P2 after ground connection, N pole outfan with amplifier P2 after resistance R9 be connected two
Pole pipe D2, the resistance R7 that one end is connected with the positive pole of amplifier P2, the other end is connected with the outfan of amplifier P2, one end
Be connected with the positive pole of amplifier P3, the resistance R10 of other end ground connection, positive pole is connected with the positive pole of amplifier P2, negative pole warp
Polar capacitor C2, the N pole that after resistance R2, outfan with amplifier P1 is connected is connected with the negative pole of polar capacitor C2, P pole
The diode D1 that base stage with audion VT is connected after resistance R4, positive pole after resistance R1 with the outfan phase of amplifier P1
The polar capacitor C1 that connection, negative pole are connected with the positive pole of amplifier P1, one end is connected with the positive pole of amplifier P1, the other end
Resistance R3, the N pole being connected with the outfan of amplifier P3 is connected with the outfan of amplifier P3, P pole after resistance R5 with
The diode D3 that the positive pole of amplifier P3 is connected, one end is connected with the negative pole of amplifier P3, the other end and amplifier P3
The inductance L that outfan is connected, positive pole outfan with amplifier P3 after resistance R11 is connected, negative pole is with amplifier P3's
The polar capacitor C6 that negative pole is connected, positive pole negative pole with amplifier P3 after resistance R12 is connected, the polarity electricity of minus earth
Hold C7, and P pole is connected with the outfan of amplifier P3, N pole is as the Zener diode of the outfan of second-order filter circuit
D4 forms；The outfan of described amplifier P2 also positive pole with amplifier P3 is connected；The grounded collector of described audion VT,
Its emitter stage is connected with the negative pole of amplifier P1.
The air exhauster drive system high-pass filtering circuit of a kind of air purifier the most according to claim 1, its feature
Being, described amplifier P1 and amplifier P2 and amplifier P3 is OP364 amplifier.
The air exhauster drive system high-pass filtering circuit of a kind of air purifier the most according to claim 2, its feature
Being, described audion VT is 3AX81 audion.
The air exhauster drive system high-pass filtering circuit of a kind of air purifier the most according to claim 3, its feature
Being, described Zener diode D4 is 1N5221B Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854527.XA CN106300937A (en) | 2016-09-27 | 2016-09-27 | A kind of air exhauster drive system high-pass filtering circuit of air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854527.XA CN106300937A (en) | 2016-09-27 | 2016-09-27 | A kind of air exhauster drive system high-pass filtering circuit of air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106300937A true CN106300937A (en) | 2017-01-04 |
Family
ID=57715226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610854527.XA Pending CN106300937A (en) | 2016-09-27 | 2016-09-27 | A kind of air exhauster drive system high-pass filtering circuit of air purifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN106300937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567061A (en) * | 2018-05-20 | 2019-12-13 | 同祥科技(北京)股份有限公司 | Dust collecting unit of intelligent air purification system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021978A1 (en) * | 2007-05-10 | 2008-11-20 | Compact Dynamics Gmbh | Active compensation filter |
| CN102255610A (en) * | 2010-05-20 | 2011-11-23 | 鸿富锦精密工业（深圳）有限公司 | Signal filtering circuit with compensating property |
| CN104410313A (en) * | 2014-11-19 | 2015-03-11 | 成都措普科技有限公司 | Inverter system based on low-pass filtering |
| CN105978335A (en) * | 2016-06-14 | 2016-09-28 | 成都卡诺源科技有限公司 | Active filter circuit based surge protection type direct current voltage conversion system |
| CN206180835U (en) * | 2016-09-27 | 2017-05-17 | 四川万康节能环保科技有限公司 | Air purifier takes out fan drive high -pass filter circuit for system |
-
2016
- 2016-09-27 CN CN201610854527.XA patent/CN106300937A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021978A1 (en) * | 2007-05-10 | 2008-11-20 | Compact Dynamics Gmbh | Active compensation filter |
| CN102255610A (en) * | 2010-05-20 | 2011-11-23 | 鸿富锦精密工业（深圳）有限公司 | Signal filtering circuit with compensating property |
| CN104410313A (en) * | 2014-11-19 | 2015-03-11 | 成都措普科技有限公司 | Inverter system based on low-pass filtering |
| CN105978335A (en) * | 2016-06-14 | 2016-09-28 | 成都卡诺源科技有限公司 | Active filter circuit based surge protection type direct current voltage conversion system |
| CN206180835U (en) * | 2016-09-27 | 2017-05-17 | 四川万康节能环保科技有限公司 | Air purifier takes out fan drive high -pass filter circuit for system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567061A (en) * | 2018-05-20 | 2019-12-13 | 同祥科技(北京)股份有限公司 | Dust collecting unit of intelligent air purification system |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170104 |