CN106463915B - Self balancing micropulse ionizes blower - Google Patents

Abstract

In one embodiment of the invention, a kind of method of the air stream of ionization that autobalance is formed in bipolar corona discharge is provided.The described method includes: providing the air moving device of at least one ion emitters and reference electrode with the AC power supplies for being connected to micropulse, and the control system at least one ionic equilibrium monitor and corona discharge adjustment control；Generate the ionization micropulse of short duration can Variable Polarity group: wherein the micropulse the amplitude of two polar voltages and in the duration it is mainly asymmetric, and the size of at least one polar ionization pulse is made to be more than corona threshold.

Description

Self balancing micropulse ionizes blower

The cross reference of related application

The application is that on 2 6th, 2012 U. S. application submitted the 13/367,369th parts continue application.U.S. Shen Please No. 13/367,369 be incorporated herein by reference completely herein.

Background technique

1. technical field

The embodiment of the present invention relates generally to ionization blower.

2. background technique

Electrostatic charge averager is designed electrostatic charges accumulated to remove or minimize.Electrostatic charge averager by generate air from Son and those ion transports are made a return journey to target is charged and destatic lotus.

One specific kind of electrostatic charge averager is ionization blower.Ionize blower usually with corona electrode generate air from Son, and using fan (or multiple fans) by air ion towards interested goal directed.

The performance of monitoring or control blower utilizes two measurements.

First is measured as balancing.It is ideal balanced-out when the number of positive air ion is equal to the number of negative air ion It is existing.On charge plates monitor, ideal reading is zero.In practice, static averager is controlled in the minizone of zero surrounding. For example, the balance of static averager can be defined as to substantially ± 0.2 volt.

Second is measured as air ion electric current.Higher air ion electric current is useful, because can be in week short period It is interim that electrostatic charge is discharged.Higher air ion electric current and the low discharge time correlation measured with charge plates monitor.

Summary of the invention

In an embodiment of the present invention, a kind of air stream of ionization that autobalance is formed in bipolar corona discharge is provided Method.The described method includes: providing at least one ion emitters with the AC power supplies for being connected to micropulse and with reference to electricity The air moving device of pole, and the control system at least one ionic equilibrium monitor and corona discharge adjustment control；It produces Raw short duration ionization micropulse can Variable Polarity group: wherein the micropulse two polar voltages amplitude and continue It is mainly asymmetric in time, and the size of at least one polarity ionization pulse is made to be more than corona threshold.

In another embodiment of the invention, a kind of equipment for self balancing ionization blower is provided.The equipment It include: air moving device and at least one ion emitters and reference electrode, they are all connected to high voltage source；It is flat with ion Weigh monitor；Wherein the transformer of the high voltage source, the ion emitters and reference electrode are arranged in AC current circuit In closed loop, and the loop is grounded by high level sensitive resistor.

Brief description

It will be referring to the various embodiments for describing the disclosure recommended as example in detail using the following figure, wherein Like mark Note mark similar components, and in the accompanying drawings:

Figure 1A is the block diagram according to the general view of the ionization blower of the embodiment of the present invention.

Figure 1B is the cross-sectional view of the blower of Figure 1A.

Fig. 1 C is the block diagram according to the sensor for including in the ionization blower of the embodiment of the present invention.

Fig. 2A is the frame according to the air stream of the ionization blower and ionization from blower of Figure 1A of the embodiment of the present invention Figure.

Fig. 2 B is the electrical diagram of the system in the ionization blower according to the embodiment of the present invention.

Fig. 3 is the flow chart according to the feedback algorithm 300 of the embodiment of the present invention.

Fig. 4 is the flow chart of the micropulse generator algorithm controlled according to the micropulse generator of the embodiment of the present invention.

Fig. 5 A is the flow chart according to the system operatio during the formation of negative pulse train of the embodiment of the present invention.

Fig. 5 B is the flow chart according to the system operatio during the formation of positive pulse train of the embodiment of the present invention.

Fig. 6 is the flow chart according to the system operatio during current impulse phase of the embodiment of the present invention.

Fig. 7 is the flow chart according to the system operatio during sensor input measurement of the embodiment of the present invention.

Fig. 8 is the waveform diagram according to the micropulse of the embodiment of the present invention.

Fig. 9 is the flow chart according to the system operatio during balancing alarm of the embodiment of the present invention.

Specific embodiment

The following specifically describes in, for purposes of explanation, numerous details are illustrated to provide to of the invention various The thorough understanding of embodiment.One of ordinary skill in the art are it will be recognized that these various embodiments of the invention are only said Bright property and be never intended to be restrictive.The other embodiment of the present invention be readily able to emerge be benefited in this article disclosed in In the brain of these technicians.

The embodiment of the present invention can be applied to the air ionizer of many types, they be configured as (for example) ionization bar, Blower or embedded ionization device.

The ionization blower of broad covered area needs efficient air ionization and short discharge time and stringent ionic equilibrium to control Combination.Figure 1A be according to the embodiment of the present invention ionization blower 100 general view block diagram, and Figure 1B be Figure 1A blower 100 along line A-A cross-sectional view.Efficient air ionization is by the array in transmitting pole 102 (that is, emitter lattice array 102) what is formed between two reference electrodes 104,105 (being illustrated as top reference electrode 104 and lower part reference electrode 105) is double Pole corona discharge is realized.Transmitting pole 102 is installed on protectiveness panel 106 (that is, ventilating duct 106), the protectiveness Panel 106 also comparably helps speed up the flowing of ionized air.

Fan 103 (Figure 1A) is in emitter lattice array 102 (ion emitters 102) and two reference electrodes 104,105 Between space 130 in provide alterable height air stream 125 air moving device.Ventilating duct 106 concentrates air stream 125 and will Air stream 125 is distributed in the space of corona discharge 130.The positive and negative ion that corona generates is between electrode 102,104 and 105 It is mobile.Air flowing 125 can obtain and take away the only relatively small part in the positive and negative ion formed by corona discharge.

According to one embodiment of present invention, air 125 is forced to leave ventilating duct (106) outlet or output end 131, and empty Gas 125 passes through air ionization voltage sensor 101.The details of one embodiment of the design of sensor 101 is showed in Fig. 1 C. The flowing of fan offer air 125.Air ionization voltage sensor 101 has the blinds being unfolded in the overall with of ventilating duct 106 The thin dielectric sheet 109 of window type.The thin dielectric sheet 109 of flap type guides the air of the ionization from ventilating duct 106 and upper electrode 104 A part of 125a (or sample 125a) (see also Fig. 2A) for flowing 125b (one air 125b of ionization), so that sensor 101 can sense and collect it is some in the ionic charge in a part of 125a of the air stream 125b of ionization.The ion-conductance of collection Lotus is subsequently formed control signal 250 (Fig. 2), and the control signal 250 is used by algorithm 300 (Fig. 3) to balance ionization blower 100 In ion.The top side 132 of the thin dielectric sheet 109 of flap type has the narrow metal strip for serving as sensitive electrode 108, and bottom Side 133 has wider ground connection simple electrode 110.This electrode 110 is usually shielded, so that air ionization voltage sensor 101 shield with the high electric field of emitter lattice array 102.It is some in the charge of 108 collection of ions of electrode, so as to cause with electricity From air stream 125b in the proportional voltage/signal 135 (Fig. 2A) of ionic equilibrium.Voltage/signal from sensor 101 135 use the ion in the air stream 125b to monitor and adjust ionization by control system 107 (being shown as system 200 in Fig. 2) Balance.This signal 135 is also indicated that the signal 250 is input into sampling as will be further discussed and protects by signal 250 It holds in circuit 205.The other configurations of ion balance sensor are (for example, in the conductibility panel or metal that are immersed in ion stream The form of net) it can also be used in the other embodiment of the present invention.

According to another embodiment of the present invention, using the ionization monitoring ionization mobile equilibrium of return current sensor 204.Therefore, One embodiment of the present of invention provides system 200 (Fig. 2) comprising the ionization for monitoring the air mobile equilibrium of ionization returns to electricity Flow sensor 204.In another embodiment of the invention, system 200 includes the air for monitoring the air mobile equilibrium of ionization Ionization voltage sensor 101.

In another embodiment of the present invention, system 200 includes dual sensor, and the dual sensor includes air ionization electricity Pressure sensor 101 and ionization current Returning sensor 204, sensor 101 and 204 are both configured to monitoring ionization Air mobile equilibrium.

Ionizing return current sensor 204 includes capacitor C2 and capacitor C1 and resistor R1 and R2.Capacitor C2 provides the AC current path to ground connection around overcurrent sensing circuit.Ionic current is converted into voltage (Ii*R2) by resistor R2, And resistor R1 and R2 and capacitor C2 forms low-pass filter to filter out the induced current formed by micropulse.It is returned from ionization The return current 210 that current sensor 204 flows out is represented as I2.

The electric current 254 for flowing to transmitting pole 102 is electric current summation Σ (Ii (+), Ii (-), I2, Ic1, Ic2), wherein Electric current Ic1 and Ic2 are respectively the electric current for flowing through capacitor C1 and C2.

Fig. 2A shows the ionic current 220 flowed between emitter 102 and reference electrode 104,105.From ventilating duct A part of the two ionic currents 220 in the air stream 125b of the 106 conversion ionization of air stream 125, the air stream of ionization 125b is moved to the charging neutrality target outside blower 100.The target is totally shown as block 127 in fig. ib, it can be opposite Different positions is arranged in ionization blower 100.

Fig. 2 B shows the electrical diagram of the system 200 in the ionization blower 100 of embodiment according to the present invention.System 200 Including ionization return current sensor 204, micropulse high-voltage power power supply unit 230 (AC power supplies 230 of micropulse) (its by Pulse driver 202 and high voltage (HV) transformer 203 formation) and ionize blower control system.In embodiment, control system System is microcontroller 201.Microcontroller 201 receives the electric power from voltage bias 256, and voltage bias 256 can be at (for example) Under about 3.3DC voltage, and microcontroller 201 is grounded at route 257.

Power converter 209 can be optionally used in system 200 to provide the various voltage (examples used by system 200 Such as, -12VDC, 12VDC or 3.3VDC).Voltage source value 258 (for example, 24VDC) can be converted into various by power converter 209 Voltage 256 is to be biased microcontroller 201.

Micropulse high-voltage power power supply unit 230 has the pulse driver 202 controlled by microcontroller 201.Pulse is driven Dynamic device 202 is connected to a liter rank pulse transformer 203.Transformer 203 generates short duration pulse (musec order) positive and negative Polarity, these polarity have the amplitude for being enough to generate corona discharge.The secondary coil of transformer 203 is to grounding point Relative Floating. The high voltage terminal 250 of transformer 203 is connected to emitter lattice array 102, and the low voltage terminal 251 of transformer 203 connects To reference electrode 104,105.

Short duration high voltage AC pulse (being generated by high-voltage power power supply unit 230) cause electrode 102 and 104, The significant capacitive character or displacement current Ic1 and Ic2 flowed between 105.For example, electric current Ic1 is in electrode (transmitting pole) It is flowed between 102 and top reference electrode 104, and electric current Ic2 flows between electrode 102 and lower part reference electrode 105.Mark The relatively small positive and negative corona of ions electric current for being denoted as Ii (+) and Ii (-) leaves this ion generating system 200 and enters blower 100 It is in outer environment and mobile to target.

In order to which capacitive current and ionic current are separated, ion generating system 200 is arranged for labeled as Ic1 and The closed loop circuit of the high-frequency AC capacitive current of Ic2, because of the secondary coil of transformer 203 and corona electrode 102,104 and 105 Substantially with respect to ground connection point floating and ionic current Ii (+) and Ii (-) have the return path (and transmission) to grounding point. AC electric current has resistance significantly more lower than these AC electric currents for being transferred to grounding point in this loop internal circulation.

System 200 includes ionic equilibrium monitor, passes through the AC voltage source 230 in pulse, the ion emitters 102 Arrange that closed loop current path provides the separation ion convection current of the AC electric current from pulse between reference electrode 104 or 105 Electric current.

In addition, executing ionic equilibrium monitoring in system 200 during time cycle between micropulse.In addition, passing through Ionic equilibrium monitoring is executed to just quadraturing with the differential signal of negative convection current.

Transformer 203, ion emitters 102 and the reference electrode 104 or 105 of high voltage source 230 are arranged for AC The closed loop of current circuit, and closed loop is connected to grounding point by high level sensitive resistor R2.

Charge conservation theorem states, when the output (via transformer 203) of AC voltage source 230 is floated, ionic current etc. In the summation of positive Ii (+) and negative Ii (-) ionic current.These electric currents Ii (+) and Ii (-) must pass through the ionization in system 200 The circuit of return current sensor 204 returns.The amount of each polar ion electric current are as follows:

Ii (+)=Q (+) * N (+) * U and Ii (-)=Q (-) * N (-) .*U

Wherein Q is positive or the charge of anion, and N is ion concentration, and U is air velocity.If positive Ii (+) and negative Ii The absolute value of (-) electric current is identical, then being up to ionic equilibrium.Two polarity of air ion known in the art carry about the same The charge (being equal to an electronics) of amount.Therefore, another condition of ionic equilibrium is the equal concentrations of two polar ions.With it is right Ionic current changes sensitive ionization return current sensor 204 (ionic equilibrium monitor) and compares, air ionization voltage sensor Device 101 (ionic equilibrium monitor) is more sensitive to the variation of ion concentration.Therefore, 101 (capacitor of air ionization voltage sensor Sensor) response speed usually than ionize return current sensor 204 response faster.

The cation of the greater number detected by sensor 101 causes the generation of sensor 101 to be input into sampling and guarantor Hold the positive output voltage of circuit 205 (and being handled by sampling with holding circuit 205).The greater number detected by sensor 101 Anion cause the generation of sensor 101 to be input into sampling and holding circuit 205 (and by sampling and holding circuit 205 Reason) negative output voltage.In contrast, as described in like abovely, the absolute value of positive Ii (+) and negative Ii (-) are returned by ionizing 204 use of telegram in reply flow sensor is with output signal 250, for being input in sampling and holding circuit 205 to determine and reach electricity From the ionic equilibrium in blower 100.

Time between micropulse string, sample signal 215 is by closure switch 216, so that amplifier 218 is connected to Capacitor C3 is then charged to a certain value based on the response to input signal 250 by capacitor C3.

The ionic current to float in air stream is characterized by low-down frequency, and can be by flowing through high megaohm resistive electricity Road R1 and R2 is until grounding point monitors.In order to minimize capacitive character and the influence of parasitic high-frequency current, return current is ionized Sensor 204 has two shunt capacitance paths including C1 and C2.

The difference of electric current Ii (+) and Ii (-) is continuously measured by ionization return current sensor 204.Flow through resistance circuit The result electric current of R1, R2 generate one voltage/signal, and the voltage/signal integrates in time with the air stream for leaving blower/is asked Average ionic equilibrium is proportional.As a result the electric current obtained is illustrated as by the electric current of summation Σ (Ii (+), Ii (-)) expression 214。

By the voltage output of measurement ionization return current sensor 204, or pass through measurement air ionization voltage sensor 101 output, or by measuring the voltage from sensor 101 and 204, reach ionic equilibrium monitoring.For the sake of clarity, electric By same in each leisure Fig. 2 of the voltage output of voltage output and air ionization voltage sensor 101 from return current sensor 204 One signal 250 is shown.The signal 250 is applied to the input terminal of sampling and holding circuit 205 (sample circuit 205), described to adopt Sample and holding circuit 205 are controlled via sampled signal 215 by microcontroller 201, the sampled signal 215 turn on the switch 216 with It triggers the sampling to signal 250 and keeps operating.

In some cases or embodiment for corona system, comparable examining from two sensors 101 and 204 Break signal.These diagnostic signals are input into sampling and holding circuit 205 as signal 250.

Then, signal 250 is being applied to the input for residing at the analog-digital converter inside microcontroller 201 (ADC) It is adjusted before end by low-pass filter 206 and is amplified by amplifier 207.Sampling and holding circuit 205 are right between the burst length Signal 250 is sampled the noise minimization so that in the signal 250 restored.Capacitor C3 keeps last between the sampling time Signal value.Signal 250 is amplified to the more available level of microcontroller 201 by amplifier 207, and from amplifier 207 The signal of this amplification is illustrated as balanced signal 252.

Balanced signal 252 and set point signal 253 are compared by microcontroller 201, the set point signal 253 be by The reference signal that balanced adjustment potentiometer 208 generates.Set point signal 253 is the variable signal that can be adjusted by potentiometer 208.

Adjustable settings point signal 253 ionizes the varying environment of blower 100 to compensate.For example, blower 100 is ionized The neighbouring reference level (grounding point) of output end 131 (Figure 1B) can be essentially a zero, and in the reference level of ionization target proximity It can be not zero.For example, it if the position of ionization target has strong above earth potential value, may be lost at the position Remove more anions.Therefore, adjustable settings point signal 253 so as to compensate ionization target position at reference level it is non- Zero.Set point signal 253 can be reduced in the case, so that microcontroller 201 can the control of driving pulse driver 202 HV Transformer 230 to generate HV output 254, HV output 254 generated at transmitting pole 102 more cations (because compared with The generation that low set-point value 253 is used as comparing to lead to more cations), to compensate at the position of ionization target The loss of anion.

Referring now to Fig. 2 and Fig. 8.In an embodiment of the present invention, ionization blower 100 can based in following operation at least One or more operation realize ionization blowers in ionic equilibriums: (1) by increase and or reduce positive pulse width value and/or Negative pulse width value, (2) are by increase and/or reduce the time between positive pulse and/or the time between negative pulse, and/or (3) by increasing and/or reducing the number of positive pulse and/or negative pulse, as described below.Microcontroller 201 exports just Pulse output 815 and negative pulse export 816 (Fig. 2 and Fig. 8), these outputs 815,816 are driven to pulse driver 202 and control Pulse driver 202 processed.In response to output 815 and 816, transformer 230 generates the ionization wave for being applied to transmitting pole 102 Shape 814 (HV output 814), to generate a certain amount of cation and a certain amount of anion based on ionization waveform 814.

As example, if sensor 101 and/or sensor 204 detect that the ion in ionization blower 100 is uneven, Wherein the amount of cation is more than the amount of anion in blower 100, then the balanced signal 252 entered in microcontroller 201 will Indicate this ion imbalance.Microcontroller 201 will extend the negative pulse width (duration) 811 of negative pulse 804.Due to width Degree 811 is extended, therefore the amplitude of negative micropulse 802 increases.Positive micropulse 801 and negative micropulse 802 are to be driven to transmitting The high voltage of pole 102 exports.The amplitude of the increase of negative micropulse 802 will increase the anion generated from transmitting pole 102.Electricity From waveform 814 generated short duration ionization micropulse 801 and 802 can Variable Polarity group.Micropulse 801 and 802 is two The amplitude of a polar voltages and on the duration it is mainly asymmetric, and the size of at least one polarity ionization pulse is made to be more than electricity Dizzy threshold value.

Once maximum pulse is had reached for negative pulse width 811, if in blower 100 cation amount still above The amount of anion, then microcontroller 201 will shorten the positive pulse width (duration) 810 of positive pulse 803.Due to shortening Width 810, therefore reduce the amplitude of positive micropulse 801.The reduced amplitude of positive micropulse 801 will be reduced from transmitting pole 102 cations generated.

As additional or alternative, if the amount of cation is more than the amount of anion, microcontroller 201 in blower 100 The time between extension negative cycle 813 (time interval between negative pulse 804) Lai Yanchang negative pulse 804 will be passed through.Due to prolonging Negative cycle 813 is grown, therefore the time between negative micropulse 802 also increases.As a result, extended or longer negative cycle 813 The time between negative micropulse 802 will be increased, this will increase the time quantum that anion is generated from transmitting pole 102 in turn.

Once minimum negative cycle is had reached for negative cycle, if the amount of cation is still above anion in blower 100 Amount, then microcontroller 201 will shorten positive pulse 803 by shortening positive period 812 (time interval between positive pulse 803) Between time.Due to shortening positive period 812, the time between positive micropulse 801 is decreased.As a result, shorten Or shorter positive period 811 will reduce the time between positive micropulse 803, this will reduce generate just from transmitting pole 102 in turn The time quantum of ion.

As additional or alternative, if the amount of cation is more than the amount of anion, microcontroller 201 in blower 100 The number of the negative pulse 804 in negative pulse output 816 will be increased.Microcontroller 201 has negative counting device, can increase meter It counts to increase the number of the negative pulse 804 in negative pulse output 816.Since the number of negative pulse 804 increases, in negative arteries and veins In punching output 816, negative pulse train increases, and which increase the numbers of the negative micropulse 802 in HV output, and the HV output is quilt It is applied to the ionization waveform 814 of transmitting pole 102.

Once maximum quantity negative pulse is added to negative pulse output 816, if the amount of cation is still super in blower 100 The amount of anion is crossed, then microcontroller 201 will reduce the number of the positive pulse 803 in positive pulse output 815.Microcontroller 201 have position counting device, can reduce and count to reduce the number of the positive pulse 803 in positive pulse output 815.Due to The number of positive pulse 803 is reduced, therefore the positive pulse train in positive pulse output 815 is reduced, and which reduce in HV output The number of positive micropulse 801, the HV output is the ionization waveform 814 for being applied to transmitting pole 102.

It is flat that following instance is related to the ion reached in blower 100 when the amount of anion in blower is more than the amount of cation Weighing apparatus.

If sensor 101 and/or sensor 204 detect that the ion in ionization blower 100 is uneven, wherein blower In 100 the amount of anion be more than cation amount, then the balanced signal 252 entered in microcontroller 201 will indicate this from It is sub uneven.Microcontroller 201 will extend the positive pulse width 812 of positive pulse 803.It is just micro- since width 810 extends The amplitude of pulse 801 increases.The amplitude of the increase of positive micropulse 801 will increase the cation generated from transmitting pole 102.

Once maximum pulse is had reached for positive pulse width 812, if in blower 100 anion amount still above The amount of cation, then microcontroller 201 will shorten the negative pulse width 811 of negative pulse 804.Due to shortening width 811, Therefore the amplitude of negative micropulse 802 is reduced.The reduced amplitude of negative micropulse 802 will be reduced to be generated from transmitting pole 102 Anion.

Alternatively or additionally, if amount of the amount of anion still above cation, microcontroller in blower 100 201 times that will be extended between positive pulse 803 by extending positive period 812.It is just micro- since positive period 812 extends Time between pulse 801 also increases.As a result, extended or longer positive period 812 will increase between positive micropulse 801 Time, this increases the time quantum that cation is generated from transmitting pole 102 in turn.

Once minimum positive period is had reached for positive period 812, if the amount of anion is still above cation in blower 100 Amount, then microcontroller 201 will be by extending negative cycle 813 time for extending between negative pulse 804.It is negative due to extending Period 813, therefore the time between negative micropulse 802 also increases.As a result, extended or longer negative cycle 813 will increase Time between negative micropulse 802, this reduces the time quantum that anion is generated from transmitting pole 102 in turn.

Alternatively or additionally, if the amount of anion is more than the amount of cation, microcontroller 201 in blower 100 The number of the positive pulse 803 in positive pulse output 815 will be increased.Microcontroller 201 has position counting device, can increase meter It counts to increase the number of the positive pulse 803 in positive pulse output 815.Since the number of positive pulse 803 increases, in Zheng Mai Punching exports the positive pulse train in 815 and extends, and the number of the positive micropulse 801 in HV output increases, and the HV output is to be applied It is added to the ionization waveform 814 of transmitting pole 102.

Once maximum quantity positive pulse is added to positive pulse output 815, if the amount of anion is still in blower 100 More than the amount of cation, then microcontroller 201 will reduce the number of the negative pulse 804 in negative pulse output 816.Microcontroller 201 have negative counting device, can reduce and count to reduce the number of the negative pulse 804 in negative pulse output 816.Due to The number of negative pulse 804 is reduced, therefore in negative pulse output 816, negative pulse train shortens, and the negative micropulse in HV output 802 number is reduced, and the HV output is the ionization waveform 814 for being applied to transmitting pole 102.

If ion imbalance (it is reflected in balanced balanced current value 252) and set point 253 be not dramatically different, from Small adjustment in sub- imbalance may be enough, and microcontroller 201 can adjust pulse width 811 and/or 810 with reach from Quantum balancing.

If ion imbalance (it is reflected in balanced balanced current value 252) and set point 253 is moderately different, Medium adjustment in ion imbalance may be enough, and the adjustable complete cycle 813 and 812 of microcontroller 201 is flat to reach ion Weighing apparatus.

If ion imbalance (it is reflected in balanced balanced current value 252) is dramatically different with set point 253, ion is not Big adjustment in balance may be enough, and microcontroller 201 can add in output 815 and 816 just and/or negative arteries and veins respectively Punching.

In another embodiment of the present invention, at least one polar duration of the micropulse in Fig. 8, (pulse was wide Degree) it is at least about 100 times shorter than the time interval between micropulse.

In another embodiment of the present invention, the micropulse in Fig. 8 is arranged to group/pulse in a manner of following closely each other String, and one of positive pulse string includes the positive ionization pulse between substantially 2 and 16, and negative pulse string is included in Negative ionization pulse between substantially 2 and 16, wherein the time interval just between negative pulse train is equal to the period of continuous impulse About 2 times.

Flow chart in Fig. 3 shows the feedback algorithm 300 of the system 200 of embodiment according to the present invention.By using anti- The function that feedback algorithm 300 provides ionic equilibrium control is run at the end of ionizing circulation.This algorithm is by the system in (for example) Fig. 2 200 execute.In block 301, start balance control feedback algorithm.

In frame 302,303,304 and 305, the calculating of the controlling value of negative pulse width is executed.In block 302, by from The ionic equilibrium (balancing side magnitude (BalanceMeasurement)) of measurement subtracts desired ionic equilibrium (set point (SetPoint)) error amount (error (Error)) is calculated.In frame 303, by error amount multiplied by loop gain.In frame 304 In, the calculating of controlling value is limited to minimum value or maximum value, so that controlling value is restricted and will not fall in except range.In frame In 305, controlling value is added to the last one negative pulse width value.

In frame 306,307,308 and 309, increasing or decreasing pulse width.In frame 306, by negative pulse width and most Big value (MAX) compares.If negative pulse width be equal to MAX, in block 307, positive pulse width of successively decreasing, and algorithm 300 after It is continuous to proceed to frame 310.If negative pulse width is not equal to MAX, algorithm 300 continues to frame 308.

In frame 308, by negative pulse width compared with minimum value (MIN).If negative pulse width is equal to MIN, In frame 309, positive pulse width of successively decreasing, and algorithm 300 continues to frame 310.If negative pulse width is not equal to MIN, Algorithm 300 continues to frame 310.When negative pulse width hits its control limit, the change of positive pulse width will be with overshoot The mode of equilibrium set-points translates balance, so that negative pulse be forced to reach its limit.

In frame 310,311,312 and 313, when coincidence pulse width limit, (period increasing or decreasing pulse period (Rep-Rate)).In a block 310, by positive pulse width compared with MAX and by negative pulse width compared with MIN.If positive pulse Width is equal to MAX and negative pulse width is equal to MIN, then alternately, being incremented by positive pulse period (period (Rep- in frame 311 Rate)) or successively decrease the negative pulse period.Algorithm 300 continues to frame 314.If positive pulse width is not equal to MAX and negative pulse Width is not equal to MIN, then algorithm 300 continues to frame 312.

In frame 312, by positive pulse width compared with MIN and by negative pulse width compared with MAX.If positive pulse width Equal to MIN and negative pulse width is equal to MAX, then in frame 313, alternately, positive pulse of successively decreasing period (period (Rep- )) or the incremental negative pulse period Rate.Algorithm 300 continues to frame 314.If positive pulse width is not equal to MIN and negative arteries and veins Width is rushed not equal to MAX, then algorithm 300 continues to frame 314.

When balancing close to set point, positive and negative pulse width control is used.With transmitting pole aging or with environment Regulation, positive and negative pulse width control will not have a range, and by " hit " control limit (be positive in its maximum value and Be negative in its minimum value (or vice versa)).When this happens, algorithm changes the positive or negative period, adds deduct to effectively increase The working time amount that Shaozheng or anion generate, and translate balance towards set point.

In frame 314,315,316 and 317, when coincidence pulse width limit, the pulse period (period (Rep-Rate)) Increasing or decreasing.In block 314, by positive pulse period and minimum pulse periodic quantity (minimum period (MIN-Rep-Rate)) ratio Compared with and by the negative pulse period compared with maximum impulse periodic quantity (maximum cycle (MAX-Rep-Rate)).If positive pulse period etc. In MIN-Rep-Rate and the negative pulse period is equal to MAX-Rep-Rate, then being counted by down time will in frame 315 One negative pulse moves to positive pulse, and algorithm 300 then continues to frame 318, in frame 318, balance control feedback algorithm 300 terminate.It is when ionizing waveform closing that down time, which counts,.Down time be the negative of pulse with just and just with negative group Time between (or train of pulse), and be defined herein as being equal to the counting in the pulse duration with the positive or negative period.

If the positive pulse period is not equal to MIN-Rep-Rate and the negative pulse period is not equal to MAX-Rep- Rate, Algorithm 300 continues to frame 316.

In frame 316, by the positive pulse period compared with MAX-Rep-Rate and by negative pulse period and MIN- Rep-Rate Compare.If the positive pulse period is equal to MAX-Rep-Rate and the negative pulse period is equal to MIN- Rep-Rate, in frame 317 In, it is counted by down time and a positive pulse is moved into negative pulse, and algorithm 300 then continues to frame 318, in frame In 318, balance control feedback algorithm 300 terminates.If the positive pulse period is not equal to MAX-Rep-Rate and negative pulse period not Equal to MIN-Rep- Rate, then algorithm 300 continues to frame 318, in frame 318, algorithm 300 terminates.

When controlling the hit limit in the period, then the next adjustment construction quality of algorithm triggers.

Micropulse is moved to the down time pulse group of negative pulse group from positive pulse group, this makes balance negative Side translates up.On the contrary, micropulse is moved to the down time pulse group of positive pulse group from negative pulse group, this Translate balance in the positive direction.Reduce this effect using down time group, and therefore finer control is provided.

Flow chart in Fig. 4 shows the algorithm 400 of micropulse generator control.The waveform of driving pulse and high voltage output It is illustrated in the figure of Fig. 8.This algorithm 400 is executed by the system 200 in (for example) Fig. 2.In frame 401, start timer 1 (Timer1) Interrupt Service Routine.Algorithm 400 for micropulse generator is (for example) run every 0.1 millisecond.

In frame 402, successively decrease micropulse period counter.This counter is the cycle division device counter of Timer1. Timer1 is by the 0.1ms major loop timer run and pulse control timer.Timer1 connects HVPS output, therefore opens Beginning micropulse, and timer 0 (Timer0) disconnects HVPS, to terminate micropulse.Therefore, Timer1 sets period and trigger mode Intend to number converting, Timer0 sets micropulse width.

In frame 403, if micropulse period counter is equal to 2, execution is compared.In other words, execute test with Determine whether the counting of cycle division device is count value 2 since next micropulse.Step in frame 403 will make ADC ( In microcontroller 201) with tightly in next micropulse transmission before time synchronization.If micropulse period counter is equal to 2, then sampling and holding circuit 205 are set to sampling configuration, as shown in frame 404.In block 405, microcontroller 201 In ADC read from sampling and holding circuit 205 sensor input signal.

If micropulse period counter is not equal to 2, algorithm 400 continues to frame 406.

Frame 404 and 405 starts and executes analog-to-digital conversion to permit the measurement of microcontroller 201 from sampling and holding circuit 205 Received simulation input.

When enabling sampling and holding circuit 205, it is generally placed upon frame 403 and is in about 0.2 before a micropulse occurs Millisecond, wherein micropulse 803 and 804 are respectively provided with pulse width 810 and 811, signal 250 (Fig. 2) then be applied to it is resident It is adjusted by low-pass filter 206 and before the input terminal of analog-digital converter (ADC) inside microcontroller 201 by amplifier 207 amplifications.Just after sampling and holding circuit 205 enable (frame 404) sampling and keep operating, signal to ADC to start It converts (frame 405).The gained sample rate of balanced signal is typically about 1.0 milliseconds, and same with micropulse period (rep- rate) Step.However, actual sample rate changes and (shows in such as frame 310,311,312,313 as the period 812,813 (Fig. 8) changes ), but will remain synchronous with micropulse period 812,813.

According to this embodiment, the method for signal sampling allows system 200 to ignore noise and (electricity before next micropulse It is capacitively coupled) current surge and advantageously avoid damage to ionic equilibrium measured value.

In block 406, it executes test and whether next scarcely perceptible pulse has been started with the cycle division device counter for determining Timer1 Punching.If micropulse period counter is equal to zero, execution is compared.If micropulse period counter is not equal to zero, Algorithm 400 continues to frame 412.If micropulse period counter is equal to zero, algorithm 400 continues to frame 417.

In frame 417, micropulse period counter is reloaded from data register.This will be (micro- for next pulse Pulse) start reload time interval.Algorithm 400 then proceeds to frame 408.

It is to start the step of new impulse phase is also to continue with current pulse phase that frame 408,409 and 410, which provides determination,.

In block 408, if micropulse counter is equal to zero (0), execution is compared.

If it is, then algorithm 400 continues to the frame 410 for requiring next pulse phase, and algorithm 400 after It is continuous to proceed to frame 411.

, if it is not, so algorithm 400 continues to the frame 409 for requiring to continue current impulse phase.

In frame 411, start Timer0 (micropulse width counter).Timer0 controls micropulse width, following to refer to Discussed in frame 414 to 417.

In block 412, so that all system breaks.In frame 413, terminate the Interrupt Service Routine of Timer1.

When the Timer0 time expires, practical micropulse width is controlled based on frame 414 to 417.In frame 414, start The Interrupt Service Routine of Timer0.In frame 415, positive micropulse driving is set to pass (that is, disconnecting positive micropulse).In frame In 416, negative micropulse driving is set to pass (that is, disconnecting negative micropulse).In frame 417, terminate the interruption service of Timer0 Routine.

As also shown in the part 450 in Figure 40 0, for micropulse driving signal 452, Timer0 it is lasting when Between be equal to micropulse driving signal 452 micropulse width 454.Micropulse width 454 starts from 456 (its of pulse rising edge Be triggered in the starting of Timer0) and end at pulse falling edge 458 (its Timer0 at the end of be triggered).

The details for the method 700 that ion balance sensor input is averaging is showed in the flow chart in Fig. 7.Frame 701 The ADC conversion of sampling and the operation of holding circuit 205 and the data from sampling and holding circuit 205 is described to 706.? At the end of ADC conversion 701, after about 0.1 millisecond, sampling and holding circuit 205 are deactivated, to prevent noise and current surge broken Bad balancing side magnitude.Gained measured value 703 and Sample Counter 705 are added to previous 704 value of original measurement value summation, and It is saved, waiting is further processed.Frame 707 to 716 is to ask flat for what the measured value to sensor 101 and/or 204 was averaging Equal routine, and obtain ionic equilibrium measure average value, then using finite impulse response (FIR) combined ionic balancing a survey average value with Measuring ion average value and baseline measurement 714 are combined, thus generate balance control loop used in finally put down Weigh measured value.The measured value that calculating in frame 714 is inputted from a series of previous sensors calculates the average value of weighting.In frame In 715, event routine is called to make adjustment based on the calculating in frame 714 to ion generation.

Flow chart in Fig. 5 A, Fig. 5 B and Fig. 6 illustrates the system operatio during the formation of negative, positive polar impulse string.From Subcycle 531 is made of the following: a series of positive pulses 502,602, is then down time interval 503,603, then It is then down time interval 518,605 for a series of negative pulses 517,604.Occur when specifying number an ionization circulation When 708, calculate ionic equilibrium and measure average value 709, and remove and original measurement value summation 710 and remove Sample Counter value 710、711。

Referring now to Fig. 5 A, Fig. 5 B and Fig. 6.These figures are difference embodiment according to the present invention in negative pulse train and Zheng Mai The flow chart of system operatio during the formation of punching string.In frame 501, start the next pulse phase for being directed to negative pulse train Routine.Frame 502 to 515 describes the step of down time for generating negative pulse series and pulse duration.Frame 517 arrives 532 the step of describing the down time for generating positive pulse series and pulse duration.The description of frame 601 to 613 is used for Generate next pulse phase or if the step of impulse phase continues at present.

Then carry out combination balancing measurement average value by balancing a survey average value and previously using finite impulse response (FIR) calculating Measured value 714 combine, to generate the final balancing side magnitude used in balance control loop.

Control loop 301 is balanced by balancing side magnitude compared with set-point value 302, to obtain error amount.Error signal It is multiplied by loop gain 303, checks whether and overruns 304/ under range 304, and is added to current negative pulse width value.

In micropulse HV supply system 202,203, the pulse width of micropulse is driven to change gained high voltage (HV) wave 814,801,802 peak amplitude.In the case, change negative amplitude pulse to realize the change of ionic equilibrium.If error Signal value is greater than zero, then up-regulation negative pulse width, therefore increase negative HV pulse amplitude, as a result, change in a negative direction flat Weighing apparatus.On the contrary, lowering negative pulse width if balance is negative, therefore change balance in the positive direction.

During the continuous adjustment of negative pulse width and when condition guarantees, negative pulse width can hit its control limit. In this case, for just 307 positive pulse widths of unbalance downward, or for 309 positive pulse widths of unbalance up-regulation are born, until negative Pulse width can be restored to control again.The mean equilibrium of about 10V is generated using this method of negative, positive pulse width control Adjusting range is controlled, there is the stability less than 3V.

According to another embodiment, under the conditions of big unbalance, for example, a large amount of pollutant is tired when ionizing blower and starting Long-pending or emitter is corroded with its aging, and negative pulse width and positive pulse width are up to its control limit 310,312.Herein Under situation, positive pulse period and negative pulse period 311,313 are adjusted, so that balance reaches a point, in the point, positive pulse width It is fallen in again with negative pulse width in its corresponding control range.Therefore, for big just unbalance condition, increase negative pulse week Phase 313, so as to cause the negative translation of balance.If there are still reduce the positive pulse period 313, to also cause to put down to condition The negative translation of weighing apparatus.This alternated process for changing the positive/negative period 313 continues, until negative pulse width and positive pulse width again It falls in its control range.Similarly, for big unbalance condition of bearing, the increase positive pulse period 311 alternately reduces negative arteries and veins The period 311 is rushed, so as to cause the positive translation of balance.This operation continues as described above, until negative pulse width and positive pulse Width is fallen in again in its control range.

In the case where there is extremely unbalance condition, positive negative pulse width and positive/negative period modulation may all hit it Corresponding control limit 310,312,314,316, position counting and negative counting will then be adapted so that and equilibrate to one A, in the point, the positive/negative period is fallen in again in its corresponding control range.Therefore, for extremely just unbalance condition, just Step-by-step counting will reduce 317, and down time step-by-step counting 317 will increase a step-by-step counting, so as to cause the negative of balance Change.

If there are still will reduce down time step-by-step counting 317, and negative counting will increase 317 to condition One step-by-step counting changes so as to cause further bearing for balance.One pulse is from negative grouping/string to this of positive grouping/string Translation continues, and is fallen in its control range again until the positive/negative period.Similarly, for extremely bearing unbalance condition, an arteries and veins Being punched in sometime will move to negative pulse grouping 315 from 315 groupings of positive pulse/string by down time step-by-step counting, from And lead to the positive change of balance, it is fallen in its control range again until the positive/negative period.

In parallel procedure, by balancing side magnitude compared with set point.If it is determined that balancing side magnitude is in its specified range Outside, the specified range corresponds to the average CPM (charge plates monitor) of the +/- 15V measured at away from 1 foot of electro-dissociator Reading, then triggering is balanced alarm by the control system of electro-dissociator.

In fig. 9, it shows for providing the method for feedback routine, if there is ion imbalance, then the feedback example Cheng Faqi ionic equilibrium alarm.Frame 901 to 909 executes measurement, and obtained measured value and threshold value comparison are balanced alarm to determine Whether it is initiated.Frame 910 to 916 determines whether balance alarm is initiated.

Every in 5 seconds fixed time intervals, assessment balancing a survey 903 makes " 1 " to be displaced to police when falling out of this range It reports in register 904, otherwise, is displaced to " 0 " in alarm group register 902.When alarm group register contains value 255 (complete " 1 "), Declaration balancing a survey is in alarm state.Similarly, if alarm group register contains value 0 (complete " 0 "), declare balancing a survey It is not at alarm state.Ignore any value of alarm group register non-255 or 0, and the state of alarm does not change.This filter alert is logical Know, and prevents sporadic notice.As by-product, notice delay allows time enough so that balance control system is from outside Stimulation restores.

It is in another parallel procedure run at the end of every ADC conversion cycle, in Fig. 9, about every 1 millisecond, prison Survey balance control system.This routine 910 checks positive and negative step-by-step counting 911,912 for restrictive condition.As described above, when When being in its corresponding limit there are unbalance condition and positive/negative pulse width and positive/negative period, positive and negative step-by-step counting is adjusted.So And when that balance cannot be made back to normality condition and positive/negative step-by-step counting has reached it and adjusts the limit 911,912, pass through by Alarm group register is set to complete " 1 " value 913, setting warning sign 914 and two alarm state positions 915 of setting to force alarm shape State.

The methods and techniques of balance Control Scheme discussed above are not limited to the ionization blower an of type.It can be used for having There are many different models of emitter electrode to ionize blower.The other application of automatic system includes having micropulse high-voltage power The model of the ionization bar of power supply unit.

The above description (being included in content described in abstract) of the embodiment of explanation of the invention is not intended in detail Or limit the invention to disclosed precise forms.Although specific embodiments of the present invention and example be herein defined as in order to illustrate Property purpose and describe, but as skilled in the art will recognize, within the scope of the invention, various equivalent modifications are can Can.

These modifications can be carried out to the present invention according to description described in detail above.The term used in appended claim It is not necessarily to be construed as limiting the invention to disclosed specific embodiment in the specification and in the claims.On the contrary, this hair Bright range will be determined all by the appended claim for explaining the religious doctrine for the establishment explained according to claims.

Claims (23)

1. a kind of method of the air stream for the ionization that autobalance is formed in bipolar corona discharge, which comprises

There is provided air moving device and be connected to micropulse AC (alternating current) voltage source at least one ion emitters and At least one reference electrode, and at least one ionic equilibrium monitor and corona discharge adjustment control system are provided for control system System；

Generate short duration ionization micropulse can Variable Polarity group:

Wherein the ionization micropulse the amplitude of two polar voltages and in the duration it is asymmetric, and keep polarity ionization micro- The size of at least one of pulse is more than corona threshold；

Wherein the ionization micropulse is arranged to group/train of pulse in a manner of following closely each other, and wherein positive pulse String includes the positive ionization micropulse between 2 and 16；

And negative pulse string includes negative electricity between 2 to 16 from micropulse.

2. according to the method described in claim 1, wherein at least one polar Duration Ratio of the ionization micropulse is electric It is as short as from the time interval between micropulse 100 times few.

3. according to the method described in claim 1, wherein, have between the time between positive pulse string and negative pulse string Every the time interval is equal to 2 times of continuous impulse period.

4. according to the method described in claim 1, wherein in order to balance the air stream of ionization, the corona discharge adjustment control system System changes the number of the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source.

5. according to the method described in claim 1, wherein in order to balance the air stream of ionization, the corona discharge adjustment control system System changes the duration of the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source.

6. according to the method described in claim 1, wherein in order to balance the air stream of ionization, the corona discharge adjustment control system System changes the period of the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source.

7. according to the method described in claim 1, wherein at least one described ionic equilibrium monitor passes through in the micropulse AC voltage source, closed loop electric current road is arranged between at least one described ion emitters and at least one described reference electrode Diameter provides the separation ion convection current from micropulse AC electric current.

8. according to the method described in claim 1, executing ion during including: the time cycle between the ionization micropulse Balance monitoring.

9. according to the method described in claim 1, including: just to execute ion with the differential signal of negative convection current by integration Balance monitoring.

10. equipment of the one kind for self balancing ionization blower (100), comprising:

Air moving device, at least one ion emitters and at least one reference electrode, at least one described ion emitters Voltage source is all connected to at least one described reference electrode；And

Ionic equilibrium monitor；

Wherein the transformer of the voltage source, at least one described ion emitters and at least one described reference electrode are arranged In the closed loop current path of AC (alternating current) current circuit, and the closed loop current path passes through high level sensitivity Resistor is connected to grounding point；

Wherein the voltage source, which is configured as exporting high voltage, is applied at least one described ion emitters, and wherein institute Stating high voltage output includes both positive polarity and negative polarity ionization micropulse；

Wherein the ionization micropulse is arranged to group/train of pulse in a manner of following closely each other, and wherein positive pulse String includes the positive ionization micropulse between 2 and 16；

And negative pulse string includes negative electricity between 2 and 16 from micropulse.

11. equipment according to claim 10, wherein the ionic equilibrium monitor includes high impedance voltage sensor, institute High impedance voltage sensor is stated to be connected to ionic equilibrium control system and be installed in the exit of the air moving device The downstream of at least one ion emitters.

12. equipment according to claim 11, wherein ionic equilibrium control system is configured in the ionization micropulse Between time interval from the sensitive resistor and/or voltage sensor sampled output signal.

13. equipment according to claim 10, wherein the voltage source generates high voltage output, the high voltage output packet It includes:

The ionization micropulse of short duration can Variable Polarity group；

Wherein the ionization micropulse the amplitude of two polar voltages and in the duration it is asymmetric, and polarity is made to ionize scarcely perceptible pulse The size of at least one of punching is more than corona threshold.

14. equipment according to claim 13, wherein the voltage source generates the high voltage output, the high voltage is defeated Out include at least one polar duration of the ionization micropulse, between Duration Ratio ionization micropulse when Between interval be as short as few 100 times.

15. equipment according to claim 13, wherein have the time between positive pulse string and negative pulse string Interval is equal to 2 times of continuous impulse period.

16. equipment according to claim 10 further comprises control system, wherein in order to balance the air stream of ionization, The control system changes the number of the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source Mesh.

17. equipment according to claim 10 further comprises control system, wherein in order to balance the air stream of ionization, The control system changes continuing for the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source Time.

18. equipment according to claim 10 further comprises control system, wherein in order to balance the air stream of ionization, The control system changes the week of the ionization micropulse being located at just and/or in negative pulse string generated by the voltage source Phase.

19. equipment according to claim 10, wherein the ionic equilibrium monitor by the voltage source, it is described extremely Arrange that the closed loop current path comes to provide between few ion emitters and at least one described reference electrode The separation ion convection current of micropulse AC electric current.

20. equipment according to claim 10, wherein time of the ionic equilibrium monitor between ionization micropulse Ionic equilibrium monitoring is executed during period.

21. equipment according to claim 10, including at least one ionic equilibrium monitor.

22. equipment according to claim 21, wherein at least one described ionic equilibrium monitor further includes air ionization Voltage sensor, the air ionization voltage sensor include the thin dielectric sheet of flap type.

23. equipment according to claim 22, wherein the thin dielectric sheet of the flap type includes the top side in the plate Electrode and the bottom side in the plate grounding electrode.