CN106621732B - Ion purifier and its control method and device - Google Patents
Ion purifier and its control method and device Download PDFInfo
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- CN106621732B CN106621732B CN201611254675.4A CN201611254675A CN106621732B CN 106621732 B CN106621732 B CN 106621732B CN 201611254675 A CN201611254675 A CN 201611254675A CN 106621732 B CN106621732 B CN 106621732B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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Abstract
The invention discloses a kind of ion purifier and its control method and device, the ion purifier includes the rectification module being sequentially connected, high drive module and ion generator, it the described method comprises the following steps: obtaining the input current of high drive module in real time, and calculate the realtime power of ion generator according to input current；The absolute value of the power difference between realtime power and the goal-setting power of ion generator is calculated, and judges whether the absolute value of power difference is greater than the first preset threshold；If the absolute value of power difference is greater than the first preset threshold, directly by the duty cycle adjustment of the driving signal of high drive module to zero, so that ion purifier stops working.This method can stop in time the output of high voltage direct current in ion generator failure problem, and ion generator is prevented to be damaged and occur unsafe condition.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to a kind of control method of ion purifier, a kind of ion
The control device of clarifier and a kind of ion purifier with the control device.
Background technique
Currently, substantially using plasma cleaning technology on no material consumption air purifier, principle is to pass through high-voltage electricity
Source loads superelevation DC voltage to ion generator, so that the air ionization in ion generator is flowed through, the impurity band in air
Electricity, then pass through the collecting plate adsorbing contaminant of opposite voltage, thus clean air.
According to above-mentioned principle, ion generator can be abstracted as capacity load, wherein high-voltage end is capacitance pole, is flowed into
Air be dielectric.It follows that in the case where electrode structure is constant, the temperature of air, relative humidity, air pressure, containing miscellaneous
Amount and flow velocity can all cause the variation of capacitor leakage current, so as to cause ion generator power swing, or even in extreme case
Under phenomena such as will appear breakdown, arcing.
In addition to above-mentioned failure problems under normal use, it is also possible to which there are the events in the case of following non-normal use
Barrier problem, for example, if be not correspondingly processed, easily causing ion into insect, sucking hair, water inlet etc.
Device damage, air purification efficiency reduce, and under serious situation, may jeopardize the safety of user.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, can occur in ion an object of the present invention is to provide a kind of control method of ion purifier
When device failure problem, stop the output of high voltage direct current in time, ion generator is prevented to be damaged and occur dangerous shape
Condition.
It is another object of the present invention to the control devices for proposing a kind of ion purifier.
Yet another object of the invention is that proposing a kind of ion purifier.
To achieve the above object, a kind of control method for ion purifier that one aspect of the present invention embodiment proposes, it is described
Ion purifier includes the rectification module being sequentially connected, high drive module and ion generator, and the method includes following steps
It is rapid: to obtain the input current of the high drive module in real time, and the ion generator is calculated according to the input current
Realtime power；Calculate the absolute of the power difference between the realtime power and the goal-setting power of the ion generator
Value, and judge whether the absolute value of the power difference is greater than the first preset threshold；If the absolute value of the power difference is big
In first preset threshold, then directly by the duty cycle adjustment of the driving signal of the high drive module to zero, so that institute
Ion purifier is stated to stop working.
The control method of ion purifier according to an embodiment of the present invention, firstly, obtaining the defeated of high drive module in real time
Enter electric current, and calculate the realtime power of ion generator according to input current, then, calculates realtime power and ion generator
The absolute value of power difference between goal-setting power, and judge whether the absolute value of power difference is greater than the first default threshold
Value, if it is greater, then directly by the duty cycle adjustment of the driving signal of high drive module to zero, so that ion purifier stops
Work.This method can stop in time the output of high voltage direct current, prevent ion from sending out in ion generator failure problem
Raw device is damaged and occurs unsafe condition.
According to one embodiment of present invention, if the absolute value of the power difference is less than or equal to the described first default threshold
Value is then believed according to the driving that the difference between the goal-setting power and the realtime power calculates the high drive module
Number duty ratio adjustment amount；The duty ratio of the driving signal is adjusted according to the duty ratio adjustment amount, and according to tune
Duty ratio after section controls the high drive module, so that the ion generator output-constant operation.
According to one embodiment of present invention, the driving that increment type PID algorithm calculates the high drive module can be used
The amount of duty cycle adjustment of signal.
According to one embodiment of present invention, according to the amount of duty cycle adjustment to the duty ratio of the driving signal into
Before row is adjusted, further includes: judge whether the absolute value of the amount of duty cycle adjustment of the driving signal is greater than the second preset threshold；
If the absolute value of the amount of duty cycle adjustment is greater than second preset threshold, directly by the drive of the high drive module
The duty cycle adjustment of dynamic signal is to zero, so that the ion purifier stops working.
It according to one embodiment of present invention, can be by being connected on the noninductive resistance of the input terminal of the high drive module
Amplifying circuit in parallel obtains the input current of the high drive module with the noninductive resistance.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of control device of ion purifier, institute
Stating ion purifier includes the rectification module being sequentially connected, high drive module and ion generator, and described device includes: electric current
Module is obtained, for obtaining the input current of the high drive module in real time；Control module, for according to the input current
The realtime power of the ion generator is calculated, and calculates the goal-setting power of the realtime power Yu the ion generator
Between power difference absolute value, and judge whether the absolute value of the power difference is greater than the first preset threshold, wherein
If the absolute value of the power difference is greater than first preset threshold, directly by the high drive if control module
The duty cycle adjustment of the driving signal of module is to zero, so that the ion purifier stops working.
The control device of ion purifier according to an embodiment of the present invention obtains module by electric current and obtains high pressure drive in real time
The input current of dynamic model block, control module calculate the realtime power of ion generator according to input current, and calculate realtime power
Then the absolute value of power difference between the goal-setting power of ion generator judges that the absolute value of power difference is
It is no to be greater than the first preset threshold, if it does, control module is then directly by the duty ratio tune of the driving signal of high drive module
Section is to zero, so that ion purifier stops working.The device can stop in time high in ion generator failure problem
The output of straightening galvanic electricity prevents ion generator to be damaged and occur unsafe condition.
According to one embodiment of present invention, if the absolute value of the power difference is less than or equal to the described first default threshold
Value, the control module then calculate the high drive according to the difference between the goal-setting power and the realtime power
The duty ratio adjustment amount of the driving signal of module, and carried out according to duty ratio of the duty ratio adjustment amount to the driving signal
It adjusts, and the high drive module is controlled according to the duty ratio after adjusting, so that the ion generator perseverance function
Rate operation.
According to one embodiment of present invention, the control module can be used increment type PID algorithm and calculate the high pressure drive
The amount of duty cycle adjustment of the driving signal of dynamic model block.
According to one embodiment of present invention, according to the amount of duty cycle adjustment to the duty ratio of the driving signal into
Before row is adjusted, it is pre- that the control module also judges whether the absolute value of the amount of duty cycle adjustment of the driving signal is greater than second
If threshold value, wherein if the absolute value of the amount of duty cycle adjustment is greater than second preset threshold, control module if is straight
It connects the duty cycle adjustment of the driving signal of the high drive module to zero, so that the ion purifier stops working.
According to one embodiment of present invention, the electric current acquisition module can be by being connected on the high drive module
The noninductive resistance of input terminal and the amplifying circuit in parallel with the noninductive resistance obtain the input current of the high drive module.
In addition, the embodiment of the present invention also proposed a kind of ion purifier comprising above-mentioned control device.
The ion purifier of the embodiment of the present invention can be broken down by above-mentioned control device in ion generator
When problem, stop the output of high voltage direct current in time, ion generator is prevented to be damaged and occur unsafe condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ion purifier according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of ion purifier in accordance with another embodiment of the present invention；
Fig. 3 is the flow chart of the control method of ion purifier according to an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the ion purifier of another embodiment according to the present invention；And
Fig. 5 is the block diagram of the control device of ion generator according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings come describe the embodiment of the present invention ion purifier control method, ion purifier control
Device and ion purifier with the control device.
In an embodiment of the present invention, ion purifier may include the rectification module being sequentially connected, high drive module and
Ion generator.
Specifically, as shown in Figure 1, the input terminal of rectification module is connected with electric main, the output end of rectification module with
The input terminal of high drive module is connected, and the output end of high drive module is connected with ion generator.
When ion purifier works on power, the rectified module of electric main is converted into low-voltage DC, high drive mould
Block converts the low-voltage DC, to export high voltage direct current, driving ion generator work.Wherein, high voltage direct current
Size mainly with the output voltage of rectification module, high drive module parameter (such as high-low pressure no-load voltage ratio, control signal duty
Than) related.And when hardware circuit determine after, for example, rectification module using Switching Power Supply or can not control rectifying circuit, high straightening
The size of galvanic electricity and the power of ion generator are only related with the control duty ratio of signal of high drive module, and duty ratio is got over
The voltage of height, high voltage direct current is higher, and corresponding ion generator power also can be higher.
Further, according to one embodiment of present invention, as shown in Fig. 2, high drive module can include: transformer,
Switching tube and voltage doubling rectifier module, wherein after the primary coil of transformer is connected with switching tube, be connected in parallel on the output of rectification module
Between end, the secondary coil of transformer and the input terminal of voltage doubling rectifier module are corresponding connected.Wherein, switching tube can be three poles
Pipe, IGBT, metal-oxide-semiconductor etc., transformer can be step-up transformer.
Specifically, as shown in Fig. 2, rectification module exports fixed low-voltage direct when ion purifier works on power
Electricity to transformer primary coil, meanwhile, control chip (such as MCU) output control signal (such as pwm signal) is to switching tube, driving
Switching tube carries out turn-on and turn-off, to generate alternating voltage on the primary coil of transformer, the secondary wire of transformer at this time
Circle will induce the high-voltage electricity of pulsation, is then converted through voltage doubling rectifier module, exports required high voltage direct current, so that from
Electronic generator work.Wherein, the size of high voltage direct current mainly with the output voltage of rectification module, transformer no-load voltage ratio, switch
Manage the duty ratio of signal processed, the relating to parameters of voltage doubling rectifier module.And after hardware circuit determines, the size of high voltage direct current
Only related with the control duty ratio of signal of switching tube with the power of ion generator, duty ratio is higher, and high voltage direct current is bigger,
The power of corresponding ion generator also can be higher.
In the related technology, ion generator is driven using constant duty ratio control, that is, export the control of default duty ratio
Signal is to switching tube, to obtain corresponding high voltage direct current in the output end of voltage doubling rectifier module.When using which, stablize
It is able to maintain that constant High voltage output and power under environment, but when air dielectric changes, capacitor leakage current can be caused
Variation, lead to ion generator power swing, in extreme circumstances, it may appear that breakdown, arcing phenomena such as, safety is relatively low.
Alternatively, driving ion generator using constant voltage feedback control, that is, connected by multiple high pressure resistant big resistance
Then partial pressure passes through feedback control, the duty ratio of the signal of adjustment control in real time, so that high direct voltage to extrapolate high direct voltage
Output can be stablized.But it since divider resistance error itself is larger, drifts about in use process more serious, and the inductance of resistance
External interference can be introduced, therefore voltage acquisition inherently has very big uncertainty, Reliability comparotive is low.
In addition, in the ion purifier course of work, it is also possible to the failure problems of non-normal use situation, example occur
Such as, into insect, sucking hair, water inlet etc., if be not correspondingly processed, it is easy to cause ion generator to damage, air
Purification efficiency reduces, and under serious situation, may jeopardize the safety of user.
For this purpose, in an embodiment of the present invention, ion generator is driven using Feedback of Power control, and according to power
Fluctuation judges whether ion generator breaks down problem, and in ion generator failure problem, by having taken
Effect measure prevents ion generator to be damaged.
Fig. 3 is the flow chart of the control method of ion purifier according to an embodiment of the present invention.As shown in figure 3, the ion
The control method of clarifier can comprise the following steps that
S1 obtains the input current of high drive module in real time, and calculates the real-time of ion generator according to input current
Power.
According to one embodiment of present invention, can by be connected on the input terminal of high drive module noninductive resistance and with
The amplifying circuit of noninductive resistance parallel connection obtains the input current of high drive module.
Specifically, noninductive resistance refers to the very small resistance of induction reactance value, induction reactance value be can be ignored, and carry out electricity
When stream acquisition, external interference will not be introduced, sampling precision is high.Noninductive resistance can be metalfilmresistor, wire resistor etc..
As shown in figure 4, noninductive resistance is connected on the one of the first output end of rectification module and the primary coil of transformer
Between end, when the operating current (input current) of high drive module flows through noninductive resistance, generated in noninductive resistance two sides micro-
Small pressure drop, amplifying circuit amplifies the small pressure drop, and is connected to the AD thief hatch of control chip, by detecting AD value, in real time
Obtain the input current I of high drive module.Then, the low-voltage DC VDC phase electric current I of input exported with rectification module
Multiply, the realtime power of ion generator can be obtained.
S2, calculates the absolute value of the power difference between realtime power and the goal-setting power of ion generator, and sentences
Whether the absolute value of disconnected power difference is greater than the first preset threshold.
Wherein, the first preset threshold can be demarcated according to the actual situation, for example, the first preset threshold can be maximum work
Rate undulating value Δ PMAX, that is, refer to the power bracket of the ion generator of permission.
S3 directly believes the driving of high drive module if the absolute value of power difference is greater than the first preset threshold
Number duty cycle adjustment to zero so that ion purifier stops working.
Specifically, when the difference power between the realtime power of ion generator and the goal-setting power of ion generator
When the absolute value of value is greater than the first preset threshold, judges that ion generator breaks down, need to stop exporting high straightening immediately at this time
Galvanic electricity, that is, by the duty cycle adjustment of driving signal to zero, so that switching tube is in an off state, the output of high drive module
No-voltage is held, ion purifier stops working, to effectively prevent ion purifier to be damaged and to occur other unnecessary
Risk.
Further, according to one embodiment of present invention, it is preset if the absolute value of power difference is less than or equal to first
Threshold value then calculates the duty ratio of the driving signal of high drive module according to the difference between goal-setting power and realtime power
Adjustment amount；It is adjusted according to duty ratio of the duty ratio adjustment amount to driving signal, and according to the duty ratio after adjusting to high pressure
Drive module is controlled, so that ion generator output-constant operation.
According to one embodiment of present invention, the driving signal that increment type PID algorithm calculates high drive module can be used
Amount of duty cycle adjustment.
Specifically, when the power swing value of ion generator is less than or equal to maximum power fluctuation, then according to increment type
The calculation formula of pid algorithm calculates the amount of duty cycle adjustment of driving signal:
Wherein, KpFor proportionality coefficient, T is sampling period, TiFor the time of integration, TdFor derivative time, ekFor kth time sampling
When ion generator goal-setting power and realtime power between power difference.
Above-mentioned formula (1) is adjusted, is enabled
It can obtain:
Δ D=Aek-Bek-1+Cek-2 (2)
By adjusting the value of A, B, C in above-mentioned formula (2), the regulated quantity Δ D of duty ratio is calculated, according to duty cycle adjustment
The duty ratio of driving signal is adjusted in amount, for example, then reducing the duty of driving signal automatically when relative air humidity increases
Than, i.e. D '=D- Δ D, and drive control is carried out according to the duty ratio switch tube of the driving signal after adjusting, so that repoussage again
Flow module exports high voltage direct current, stablizes the realtime power of ion generator in goal-setting power.
But when using invariable power feedback control driving ion generator, when relative humidity is very high, or occur into
Water, foreign matter, insect etc. cause the power swing of ion generator very big, and may cause increment type PID algorithm at this time can not restrain
Possibility, cause system control get muddled, therefore, when power swing is very big, i.e., the absolute value of power difference be greater than first
Preset threshold directly controls high drive module and stops output high voltage direct current, to prevent ion generator to be damaged.
Therefore, the control method of ion purifier according to an embodiment of the present invention, using invariable power feedback control drive from
Electronic generator, and judge whether ion generator breaks down according to the power swing of ion generator, if power swing
Very big, then illustrate that ion generator is likely to occur causes to hit because high humidity, water inlet, foreign matter, insect etc. occurs in ion generator
Wear, arcing, short circuit phenomena such as, at this time rapidly shutdown High voltage output, effectively avoid hardware damage and other unnecessary danger.
According to another embodiment of the invention, it is adjusted according to duty ratio of the amount of duty cycle adjustment to driving signal
Before, further includes: judge whether the absolute value of the amount of duty cycle adjustment of driving signal is greater than the second preset threshold；If duty ratio
The absolute value of regulated quantity be greater than the second preset threshold, then directly by the duty cycle adjustment of the driving signal of high drive module extremely
Zero, so that ion purifier stops working.
Wherein, the second preset threshold can be demarcated according to the actual situation, and the second preset threshold can be maximum duty cycle
Adjustment amount Δ DMAX, that is, the duty ratio adjusting range that allows.The corresponding basic duty ratio of the duty cycle adjustment range refers to, air
Medium temperature is when 25 DEG C, relative humidity are 50%, the duty ratio of driving signal when ion generator consumes goal-setting power,
Duty ratio ideally can also be regarded as.
Specifically, when the difference power between the realtime power of ion generator and the goal-setting power of ion generator
When the absolute value of value is greater than the first preset threshold, judge that ion generator breaks down, stops output high voltage direct current immediately at this time
Electricity, ion purifier stop working.
It is absolute when the power difference between the realtime power of ion generator and the goal-setting power of ion generator
When value is less than or equal to the first preset threshold, the regulated quantity Δ D of the duty ratio of driving signal is calculated by increment type PID algorithm, so
Afterwards, judge whether the regulated quantity Δ D of duty ratio is greater than the second preset threshold (such as Δ DMAX).If Δ D > Δ DMAX, then judge from
Electronic generator breaks down, and stops output high voltage direct current immediately at this time, that is, high by the duty cycle adjustment of driving signal to zero
Drive module output end no-voltage is pressed, ion purifier stops working；If Δ D≤Δ DMAX, then according to Δ D to driving signal
Duty ratio be adjusted, and high drive module is controlled according to the duty ratio after adjusting, so that ion generator is permanent
Power operation.To further judge whether ion generator breaks down problem by the regulated quantity of the duty ratio of calculating,
To realize to the duplicate protection of ion generator, unsafe condition is avoided the occurrence of.
In conclusion the control method of ion purifier according to an embodiment of the present invention, firstly, obtaining high drive in real time
The input current of module, and according to the realtime power of input current calculating ion generator, then, calculate realtime power and ion
The absolute value of power difference between the goal-setting power of generator, and judge whether the absolute value of power difference is greater than first
Preset threshold, if it is greater, then directly by the duty cycle adjustment of the driving signal of high drive module to zero, so that ion cleaning
Device stops working.This method can stop in time the output of high voltage direct current, prevent in ion generator failure problem
Ion generator is damaged and occurs unsafe condition.
Fig. 5 is the block diagram of the control device of ion purifier according to an embodiment of the present invention.
In an embodiment of the present invention, as shown in Figure 1, ion purifier may include the rectification module 10 being sequentially connected, height
Press drive module 20 and ion generator 30.
Specifically, as shown in Figure 1, the input terminal of rectification module 10 is connected with electric main, the output of rectification module 10
End is connected with the input terminal of high drive module 20, and the output end of high drive module 20 is connected with ion generator 30.
When ion purifier works on power, the rectified module 10 of electric main is converted into low-voltage DC, high drive
Module 20 converts the low-voltage DC, and to export high voltage direct current, driving ion generator 30 works.Wherein, high pressure
Mainly (such as high-low pressure no-load voltage ratio controls the size of direct current with the parameter of the output voltage of rectification module 10, high drive module 20
The duty ratio of signal) it is related.And after hardware circuit determines, for example, rectification module 10 uses Switching Power Supply or uncontrollable whole
The power of current circuit, the size of the high voltage direct current and ion generator 30 only duty with the control signal of high drive module 20
Than related, duty ratio is higher, and the voltage of high voltage direct current is higher, and corresponding 30 power of ion generator also can be higher.
Further, according to one embodiment of present invention, as shown in Fig. 2, high drive module 20 can include: transformer
21, switching tube 22 and voltage doubling rectifier module 23, wherein after the primary coil of transformer 21 is connected with switching tube 22, be connected in parallel on whole
Between the output end of flow module 10, the secondary coil of transformer 21 is corresponding with the input terminal of voltage doubling rectifier module 23 to be connected.Wherein,
Switching tube 22 can be triode, IGBT, metal-oxide-semiconductor etc., and transformer 21 can be step-up transformer.
Specifically, as shown in Fig. 2, rectification module 10 exports fixed low-pressure direct when ion purifier works on power
Galvanic electricity to transformer 21 primary coil, meanwhile, control chip (such as MCU) output control signal (such as pwm signal) is to switching tube
22, driving switch pipe 22 carries out turn-on and turn-off, to generate alternating voltage on the primary coil of transformer 21, transformation at this time
The secondary coil of device 21 will induce the high-voltage electricity of pulsation, then be converted through voltage doubling rectifier module 23, and required height is exported
Straightening galvanic electricity, so that ion generator 30 works.Wherein, the size of high voltage direct current is mainly electric with the output of rectification module 10
Pressure, the no-load voltage ratio of transformer 21, switching tube 22 control the relating to parameters of the duty ratio of signal, voltage doubling rectifier module 30.And in hardware
After circuit determines, the power of the size of the high voltage direct current and ion generator 30 only duty ratio with the control signal of switching tube 22
Related, duty ratio is higher, and high voltage direct current is bigger, and the power of corresponding ion generator 30 also can be higher.
In the related technology, ion generator 30 is driven using constant duty ratio control, that is, export the control of default duty ratio
Signal processed is to switching tube 22, to obtain corresponding high voltage direct current in the output end of voltage doubling rectifier module 23.Using which
When, constant High voltage output and power are able to maintain that under stable environment, but when air dielectric changes, can cause capacitor
Leakage current variation, lead to 30 power swing of ion generator, in extreme circumstances, it may appear that breakdown, arcing phenomena such as, safety
It is relatively low.
Alternatively, driving ion generator 30 using constant voltage feedback control, that is, pass through multiple high pressure resistant big resistance strings
Then connection partial pressure passes through feedback control, the duty ratio of the signal of adjustment control in real time, so that direct current is high to extrapolate high direct voltage
The enough stable output of pressure energy.But it since divider resistance error itself is larger, drifts about in use process more serious, and the inductance of resistance
Amount can introduce external interference, therefore voltage acquisition inherently has very big uncertainty, and Reliability comparotive is low.
In addition, in the ion purifier course of work, it is also possible to the failure problems of non-normal use situation, example occur
Such as, into insect, sucking hair, water inlet etc., if be not correspondingly processed, it is easy to cause ion generator to damage, air
Purification efficiency reduces, and under serious situation, may jeopardize the safety of user.
For this purpose, in an embodiment of the present invention, ion generator 30 is driven using Feedback of Power control, and according to power
Fluctuation judge whether ion generator 30 breaks down problem, and in 30 failure problem of ion generator, pass through
It takes effective measure to that ion generator 30 is prevented to be damaged.
As shown in figure 5, the control device of the ion purifier may include that electric current obtains module 100 and control module 200.
Wherein, electric current obtains module 100 for obtaining the input current of high drive module 20 in real time.Control module 200
For calculating the realtime power of ion generator 30 according to input current, and calculate the target of realtime power Yu ion generator 30
The absolute value of the power difference between power is set, and judges whether the absolute value of power difference is greater than the first preset threshold,
Wherein, if the absolute value of power difference is greater than the first preset threshold, directly by high drive module 20 if control module 200
The duty cycle adjustment of driving signal is to zero, so that ion purifier stops working.
According to one embodiment of present invention, electric current acquisition module 100 can be by being connected on the defeated of high drive module 20
The noninductive resistance 41 and the amplifying circuit 42 in parallel with noninductive resistance 41 that enter end obtain the input current of high drive module 20.
Specifically, noninductive resistance 41 refers to the very small resistance of induction reactance value, induction reactance value be can be ignored, and carried out
When current acquisition, external interference will not be introduced, sampling precision is high.Noninductive resistance 41 can be metalfilmresistor, wire resistor etc..
As shown in figure 4, noninductive resistance 41 to be connected on to the first output end of rectification module 10 and the primary line of transformer 21
Between one end of circle, when the operating current (input current) of high drive module 20 flows through noninductive resistance 41, in noninductive resistance
41 two sides generate small pressure drop, and amplifying circuit 42 amplifies the small pressure drop, and is connected to the AD thief hatch of control chip, pass through
AD value is detected, obtains the input current I of high drive module 20 in real time.Then, by control module 200 by the electric current I of input
The low-voltage DC VDC exported with rectification module 10 is multiplied, and the realtime power of ion generator 30 can be obtained.
When control module 200 calculate ion generator 30 realtime power and ion generator 30 goal-setting power it
Between power difference absolute value be greater than the first preset threshold when, judge that ion generator 30 breaks down, need to stop immediately at this time
Only export high voltage direct current, that is, control module 200 closes the duty cycle adjustment of driving signal to zero so that switching tube 22 is in
Disconnected state, the output end no-voltage of high drive module 20, ion purifier stops working, to effectively prevent ion purifier
It is damaged and other unnecessary risks occurs.
Further, according to one embodiment of present invention, it is preset if the absolute value of power difference is less than or equal to first
Threshold value, control module 200 then calculate the drive of high drive module 20 according to the difference between goal-setting power and realtime power
The duty ratio adjustment amount of dynamic signal, and be adjusted according to duty ratio of the duty ratio adjustment amount to driving signal, and according to tune
Duty ratio after section controls high drive module 20, so that 30 output-constant operation of ion generator.
According to one embodiment of present invention, control module 200 calculates high drive module 20 using increment type PID algorithm
Driving signal amount of duty cycle adjustment.
Specifically, when the power swing value of ion generator 30 is less than or equal to maximum power fluctuation, control module 200
The amount of duty cycle adjustment of driving signal is then calculated according to the calculation formula of increment type PID algorithm:
Wherein, KpFor proportionality coefficient, T is sampling period, TiFor the time of integration, TdFor derivative time, ekFor kth time sampling
When ion generator goal-setting power and realtime power between power difference.
Above-mentioned formula (1) is adjusted, is enabled
It can obtain:
Δ D=Aek-Bek-1+Cek-2 (2)
By adjusting the value of A, B, C in above-mentioned formula (2), the regulated quantity Δ D of duty ratio is calculated, control module 200
It is adjusted according to duty ratio of the amount of duty cycle adjustment to driving signal, for example, when relative air humidity increases, control module 200
The then automatic duty ratio for reducing driving signal, i.e. D '=D- Δ D, and according to the duty ratio switch tube of the driving signal after adjusting
21 carry out drive control, so that voltage doubling rectifier module 23 exports high voltage direct current, stablize the realtime power of ion generator 30
In goal-setting power.
But when using invariable power feedback control driving ion generator 30, when relative humidity is very high, or occur into
Water, foreign matter, insect etc. cause the power swing of ion generator 30 very big, and may cause increment type PID algorithm at this time can not receive
The possibility held back causes system control to get muddled, and therefore, when power swing is very big, i.e., the absolute value of power difference is greater than the
One preset threshold directly controls high drive module 20 and stops output high voltage direct current, to prevent ion generator 30 from damaging
It is bad.
Therefore, the control device of ion purifier according to an embodiment of the present invention, using invariable power feedback control drive from
Electronic generator, and judge whether ion generator breaks down according to the power swing of ion generator, if power swing
Very big, then illustrate that ion generator is likely to occur causes to hit because high humidity, water inlet, foreign matter, insect etc. occurs in ion generator
Wear, arcing, short circuit phenomena such as, at this time rapidly shutdown High voltage output, effectively avoid hardware damage and other unnecessary danger.
According to another embodiment of the invention, it is adjusted according to duty ratio of the amount of duty cycle adjustment to driving signal
Before, control module 200 also judges whether the absolute value of the amount of duty cycle adjustment of driving signal is greater than the second preset threshold,
In, if the absolute value of amount of duty cycle adjustment is greater than the second preset threshold, directly by high drive module 20 if control module 200
Driving signal duty cycle adjustment to zero so that ion purifier stops working.
Wherein, the second preset threshold can be demarcated according to the actual situation, and the second preset threshold can be maximum duty cycle
Adjustment amount Δ DMAX, that is, the duty ratio adjusting range that allows.The corresponding basic duty ratio of the duty cycle adjustment range refers to, air
Medium temperature is when 25 DEG C, relative humidity are 50%, the duty of driving signal when ion generator 30 consumes goal-setting power
Than duty ratio ideally can also be regarded as.
Specifically, when the function between the realtime power of ion generator 30 and the goal-setting power of ion generator 30
When the absolute value of rate difference is greater than the first preset threshold, judge that ion generator 30 breaks down, it is high to stop output immediately at this time
Straightening galvanic electricity, ion purifier 30 stop working.
When the power difference between the realtime power of ion generator 30 and the goal-setting power of ion generator 30
When absolute value is less than or equal to the first preset threshold, control module 200 calculates the duty ratio of driving signal by increment type PID algorithm
Regulated quantity Δ D, then, control module 200 also needs to judge whether the regulated quantity Δ D of duty ratio is greater than the second preset threshold
(such as Δ DMAX).If Δ D > Δ DMAX, then judge that ion generator 30 breaks down, stop output high voltage direct current immediately at this time
Electricity, that is, control module 200 is by the duty cycle adjustment of driving signal to zero, 20 output end no-voltage of high drive module, and ion is net
Change device to stop working；If Δ D≤Δ DMAX, then control module 200 is adjusted according to duty ratio of the Δ D to driving signal, and
High drive module 20 is controlled according to the duty ratio after adjusting, so that 30 output-constant operation of ion generator.To logical
The regulated quantity of the duty ratio calculated is crossed further to judge whether ion generator breaks down problem, ion is occurred with realizing
The duplicate protection of device, avoids the occurrence of unsafe condition.
The control device of ion purifier according to an embodiment of the present invention obtains module by electric current and obtains high pressure drive in real time
The input current of dynamic model block, control module calculate the realtime power of ion generator according to input current, and calculate realtime power
Then the absolute value of power difference between the goal-setting power of ion generator judges that the absolute value of power difference is
It is no to be greater than the first preset threshold, if it does, control module is then directly by the duty ratio tune of the driving signal of high drive module
Section is to zero, so that ion purifier stops working.The device can stop in time high in ion generator failure problem
The output of straightening galvanic electricity prevents ion generator to be damaged and occur unsafe condition.
In addition, the embodiment of the present invention also proposed a kind of ion purifier comprising above-mentioned control device.
The ion purifier of the embodiment of the present invention event can occurring in ion generator by above-mentioned control device
When barrier problem, stop the output of high voltage direct current in time, ion generator is prevented to be damaged and occur unsafe condition.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of control method of ion purifier, which is characterized in that the ion purifier includes the rectification mould being sequentially connected
Block, high drive module and ion generator, the described method comprises the following steps:
The input current of the high drive module is obtained in real time, and the ion generator is calculated according to the input current
Realtime power；
The absolute value of the power difference between the realtime power and the goal-setting power of the ion generator is calculated, and is sentenced
Whether the absolute value of the power difference of breaking is greater than the first preset threshold；
If the absolute value of the power difference is greater than first preset threshold, directly by the drive of the high drive module
The duty cycle adjustment of dynamic signal is to zero, so that the ion purifier stops working.
2. the control method of ion purifier as described in claim 1, which is characterized in that
If the absolute value of the power difference be less than or equal to first preset threshold, according to the goal-setting power with
Difference between the realtime power calculates the duty ratio adjustment amount of the driving signal of the high drive module；
The duty ratio of the driving signal is adjusted according to the duty ratio adjustment amount, and according to the duty ratio pair after adjusting
The high drive module is controlled, so that the ion generator output-constant operation.
3. the control method of ion purifier as claimed in claim 2, which is characterized in that calculated using increment type PID algorithm
The amount of duty cycle adjustment of the driving signal of the high drive module.
4. the control method of ion purifier as claimed in claim 2, which is characterized in that according to the amount of duty cycle adjustment
Before the duty ratio of the driving signal is adjusted, further includes:
Judge whether the absolute value of the amount of duty cycle adjustment of the driving signal is greater than the second preset threshold；
If the absolute value of the amount of duty cycle adjustment is greater than second preset threshold, directly by the high drive module
Driving signal duty cycle adjustment to zero so that the ion purifier stops working.
5. the control method of ion purifier as described in claim 1, which is characterized in that by being connected on the high drive
The noninductive resistance of the input terminal of module and the amplifying circuit in parallel with the noninductive resistance obtain the defeated of the high drive module
Enter electric current.
6. a kind of control device of ion purifier, which is characterized in that the ion purifier includes the rectification mould being sequentially connected
Block, high drive module and ion generator, described device include:
Electric current obtains module, for obtaining the input current of the high drive module in real time；
Control module for calculating the realtime power of the ion generator according to the input current, and calculates described real-time
The absolute value of power difference between power and the goal-setting power of the ion generator, and judge the power difference
Absolute value whether be greater than the first preset threshold, wherein if the absolute value of the power difference be greater than the described first default threshold
Value, the control module then directly by the duty cycle adjustment of the driving signal of the high drive module to zero so that it is described from
Sub- clarifier stops working.
7. the control device of ion purifier as claimed in claim 6, which is characterized in that if the power difference is absolute
Value is less than or equal to first preset threshold, the control module then according to the goal-setting power and the realtime power it
Between difference calculate the high drive module driving signal duty ratio adjustment amount, and according to the duty ratio adjustment amount pair
The duty ratio of the driving signal is adjusted, and is controlled according to the duty ratio after adjusting to the high drive module
System, so that the ion generator output-constant operation.
8. the control device of ion purifier as claimed in claim 7, which is characterized in that the control module uses increment type
Pid algorithm calculates the amount of duty cycle adjustment of the driving signal of the high drive module.
9. the control device of ion purifier as claimed in claim 7, which is characterized in that according to the amount of duty cycle adjustment
Before the duty ratio of the driving signal is adjusted, the control module also judges the duty cycle adjustment of the driving signal
Whether the absolute value of amount is greater than the second preset threshold, wherein if the absolute value of the amount of duty cycle adjustment is greater than described second
Preset threshold, the control module then directly by the duty cycle adjustment of the driving signal of the high drive module to zero so that
The ion purifier stops working.
10. the control device of ion purifier as claimed in claim 6, which is characterized in that the electric current obtains module and passes through
The noninductive resistance and the amplifying circuit in parallel with the noninductive resistance for being connected on the input terminal of the high drive module obtain institute
State the input current of high drive module.
11. a kind of ion purifier, which is characterized in that including the ion purifier as described in any one of claim 6-10
Control device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611254675.4A CN106621732B (en) | 2016-12-30 | 2016-12-30 | Ion purifier and its control method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254675.4A CN106621732B (en) | 2016-12-30 | 2016-12-30 | Ion purifier and its control method and device |
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| Publication Number | Publication Date |
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| CN106621732A CN106621732A (en) | 2017-05-10 |
| CN106621732B true CN106621732B (en) | 2019-08-30 |
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| CN111375493B (en) * | 2020-03-25 | 2021-02-09 | 珠海格力电器股份有限公司 | Power supply control method and device, storage medium, ion generator and purifier |
| CN112815465A (en) * | 2021-01-11 | 2021-05-18 | 海信（山东）空调有限公司 | Negative ion concentration adjusting method and device, air purifying equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096828Y (en) * | 2007-10-16 | 2008-08-06 | 湖州海振电子科技有限公司 | A three-phase current detection circuit for AC frequency converter |
| CN201171810Y (en) * | 2006-10-02 | 2008-12-31 | 西尔马克控股有限公司 | Ion air cleaner of atmospheric current |
-
2016
- 2016-12-30 CN CN201611254675.4A patent/CN106621732B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201171810Y (en) * | 2006-10-02 | 2008-12-31 | 西尔马克控股有限公司 | Ion air cleaner of atmospheric current |
| CN201096828Y (en) * | 2007-10-16 | 2008-08-06 | 湖州海振电子科技有限公司 | A three-phase current detection circuit for AC frequency converter |
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