CN104577725B - Ion generator and control method thereof - Google Patents

Abstract

Polarity Control portion has: indicate storage part, stores some in each mark being assigned with of the second polar mode applying first polar mode of DC voltage of negative polarity and the DC voltage of the spray point applying negative polarity to the first group the spray point applying positive polarity to the second group for the spray point applying positive polarity to the first group the spray point to the second group；Mark update section, on and off switch from OFF to ON or from ON to the switching of OFF time, the mark of a side of storage in mark storage part is rewritten as the mark of the opposing party；And instruction department, from the polar mode that the output of polarity output unit is corresponding with the mark of storage mark storage part.

Description

Ion generator and control method thereof

Technical field

The present invention relates to for utilize spray point is applied that high voltage occurred just and negative Ion generator (ionaizer) that charged workpiece etc. is electrically neutralized by ion and control thereof Method processed.

Background technology

In the past, in order to prevent the obstacle caused by the electrostatic gas such as electrostatic breakdown, Electrostatic Absorption, use Spray point is applied high voltage and just occurring by corona discharge and negative ion except electric Device i.e. ion generator.Such ion generator is mainly classified into and applies spray point directly Flow the mode (set forth below for DC mode) of voltage and spray point is applied alternating voltage Mode (set forth below for AC mode).

Wherein, described DC mode refers to, have release the spray point of cation and releasing bear from The spray point of son, by each spray point is applied positive and negative DC voltage, positive and negative from these The mode of positive and negative ion released by each spray point simultaneously.Therefore, apply to hand over compared to spray point The described AC mode of stream voltage, it is possible to suppression just and negative ion in conjunction with, its result, Have and more positive and negative each ion can be made to fly at a distance, it is possible to make except electricity speed is the most such Advantage.

However, it is known that in the ion generator of such corona discharge type, with the use time Long life, spray point deteriorates due to burn into abrasion etc., but now, the electric discharge of special positive pole Pin is easier to deterioration compared to the spray point of negative pole.Accordingly, there exist and put from positive and negative each spray point The ionic equilibrium gone out through time collapse, except electrical property reduce such problem.

Therefore, in order to prevent such ionic equilibrium through time deviation, patent documentation 1, In patent documentation 2, it is proposed that be configured to release the polarity of a side from the spray point of the first group Ion, meanwhile, releases the ion of the polarity of the opposing party, and pin from the spray point of the second group To each regular between, make the neutralizer of polarity inversion of the ion released from described each group.

But, neutralizer disclosed in this patent documentation 1, patent documentation 2 makes described each group The polarity of spray point with below 0.05s such short cycle (certain period) reversion, institute , while needing to give full play to the strong point of DC mode as described above, to prevent ionic equilibrium Through time deviation in the case of, it is impossible to say it must is optimal solution countermeasure.

Patent documentation 1: Japanese Unexamined Patent Publication 2008-153132 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2008-288072 publication

Summary of the invention

The problem of the present invention is to provide a kind of ion generator and control method thereof, is fully sending out While the strong point of the ion generator waving DC mode as described above, make and use the time The degree of the caused deteriorations such as the burn into abrasion of long life spray point together each spray point it Between homogenization such that it is able to prevent ionic equilibrium through time deviation, whole simultaneously as spray point Body can also improve the life-span.

In order to solve described problem, the present invention provides a kind of ion generator, possesses: discharge part, There is 2n electric discharge of the ion just released according to the polarity of the DC voltage applied or bearing Pin, is grouped into the first group and the second group by every n of these spray points, and wherein, n is Natural number；Polarity output unit, it is possible to by certain in the first polar mode and the second polar mode One is selectively output to described discharge part, and this first polar mode is to described first group Spray point to described second group while the DC voltage that the spray point of group applies positive polarity Applying the pattern of the DC voltage of negative polarity, this second polar mode is to described first group Spray point apply negative polarity DC voltage while the spray point of described second group is executed Add the pattern of the DC voltage of positive polarity；Polarity Control portion, controls defeated from described polarity output unit The polar mode gone out；And power supply, it is connected with described polarity output unit, it is possible to make for this pole The power supply of property output unit becomes ON/OFF, and described ion generator is characterised by: described pole Property control portion have: mark storage part, storage to described first polar mode and described second Some in each mark being assigned with of polar mode；And mark update section, described Power supply from OFF to ON or from ON to OFF switch time, will be at described mark storage part The mark of one side of middle storage is rewritten as the mark of the opposing party, will make from described polarity output unit Export the command signal of the polar mode corresponding with the mark of storage in described mark storage part Output is to this polarity output unit.

Now, in above-mentioned ion generator, described polarity output unit has: the first positive electrical Road, the DC voltage to the spray point applying positive polarity of described first group；First cathode traces, Spray point to described first group applies the DC voltage of negative polarity；Second cathode circuit, right The spray point of described second group applies the DC voltage of positive polarity；Second cathode traces, to institute The spray point stating the second group applies the DC voltage of negative polarity；First switch, makes described power supply And the electrical connection between described first cathode circuit becomes ON/OFF；Second switch, makes described Electrical connection between power supply and described first cathode traces becomes ON/OFF；3rd switch, makes Electrical connection between described power supply and described second cathode circuit becomes ON/OFF；And the 4th Switch, makes the electrical connection between described power supply and described second cathode traces become ON/OFF, By the command signal from described Polarity Control portion, described first switch and the described 4th is made to open Pass becomes ON, and makes described second switch and described 3rd switch become OFF, thus defeated Go out described first polar mode, make described first switch and described 4th switch become OFF, and And make described second switch and described 3rd switch become ON, thus export described second polarity Pattern.

It addition, in order to solve above-mentioned problem, the present invention provides the controlling party of a kind of ion generator Method, this ion generator possesses: discharge part, has the polarity according to the DC voltage applied 2n spray point of the ion just released or bear, is grouped into every n of these spray points First group and the second group, wherein, n is natural number；Polarity output unit, it is possible to by first Some in polar mode and the second polar mode is selectively output to described discharge part, This first polar mode is the unidirectional current in the spray point applying positive polarity to described first group While pressure, the spray point of described second group is applied the pattern of the DC voltage of negative polarity, should Second polar mode is the DC voltage in the spray point applying negative polarity to described first group While the spray point of described second group applied the pattern of DC voltage of positive polarity；And Power supply, is connected with described polarity output unit, it is possible to make to become for the power supply of this polarity output unit ON/OFF, described control method is characterised by: at described power supply from becoming ON to becoming During the work of OFF, from described polarity output unit to described discharge part, export institute continuously State the polar mode of one party in the first polar mode and described second polar mode, in institute State power supply when OFF switches to ON, output with during the work of last time in output one The polar mode of the opposing party that square polar mode is different.

According to the present invention, arrange and the spray point of the first group can will applied the straight of positive polarity While stream voltage, the spray point of the second group is applied the first pole of the DC voltage of negative polarity Sexual norm and the spray point of described first group is being applied DC voltage same of negative polarity Time the spray point of described second group applied second polar mode of DC voltage of positive polarity In some be selectively output to the polarity output unit of discharge part, by power supply from OFF When switching to ON, by the described first and second polar mode and in the work of last time The polar mode of the side exported (i.e. during power supply ON to be become) in period is different The polar mode of the opposing party export discharge part from described polarity output unit, if so making electricity Source becomes ON from OFF and makes ion generator work, then can be for described discharge part Each spray point, the DC voltage of the polarity of middle contrary during applying the work with last time respectively.Cause This, it is possible to while playing the strong point of ion generator of DC mode fully, make and make The degree of the caused deteriorations such as the burn into abrasion with the long life of time spray point together is respectively Homogenization between spray point such that it is able to prevent ionic equilibrium through time deviation, simultaneously can also Enough life-spans improved as the spray point entirety belonging to Liang Ge group.

Accompanying drawing explanation

Fig. 1 is the block diagram of the structure of the ion generator illustrating the present invention.

Fig. 2 is the flow chart of the first embodiment illustrating the present invention.

Fig. 3 is the sequential chart in first embodiment of the present invention.

Fig. 4 is the flow chart illustrating second embodiment of the present invention.

Fig. 5 is the sequential chart in second embodiment of the present invention.

Detailed description of the invention

Hereinafter, the embodiment of the ion generator of the present invention is described in detail.As it is shown in figure 1, Ion generator 1 includes: power supply 2, output high voltage；Discharge part 10, to not shown Except electricity object is just being released and negative ion；Direct voltage output portion (polarity output unit) 20, Described discharge part 10 is just being applied and negative DC high voltage；And Polarity Control portion 30, Control from described direct voltage output portion 20 DC high voltage that described discharge part 10 applies Polarity.

Described power supply 2 is connected with described direct voltage output portion 20, has and can make for this The power supply in direct voltage output portion 20 becomes ON/OFF and makes ion generator 1 work/stop On and off switch 2a.It addition, this power supply 2 have detect described on and off switch 2a from OFF To ON or from ON to the switching of OFF, to described Polarity Control portion 30 output signal Power detecting portion 2b.

Described discharge part 10, by the polarity according to the DC high voltage applied, passes through corona discharge 2n (n: natural number) the individual spray point 11,12 that the ion just made or bear occurs is constituted.Separately Outward, these 2n spray points 11,12 are divided into n the spray point 11 and of the first group The n of two groups (i.e. identical with the first group quantity) spray point 12.To these first group The spray point 11,12 of group and the second group applies the DC high voltage of mutual antipolarity, from The spray point of the group being applied in the DC high voltage of positive polarity releases cation, from being applied in Anion released by the spray point of the group of the DC high voltage of negative polarity.

The described direct voltage output portion 20 spray point 11 and described second to described first group The spray point 12 of group exports the DC high voltage of mutual antipolarity, including: the first unidirectional current Voltage follower circuit 21, applies the direct current height electricity of positive polarity to the spray point 11 of described first group Pressure；Second DC voltage output circuit 22, applies negative to the spray point 11 of described first group The DC high voltage of polarity；3rd DC voltage output circuit 23, puts described second group Acusector 12 applies the DC high voltage of positive polarity；And the 4th DC voltage output circuit 24, Spray point 12 to described second group applies the DC high voltage of negative polarity.

Described first and the 3rd DC voltage output circuit 21,23 possess respectively: first with And the 3rd booster transformer 21a, 23a, make the high frequency voltage boosting from the output of described power supply 2； First and second cathode circuit 21b, 23b, will be by these booster transformers 21a, 23a liter The high frequency voltage transformation pressed is the DC high voltage of positive polarity, be respectively outputted to described first with And second spray point 11,12 of group；And first and the 3rd switch 21c, 23c, it is possible to The electrical connection between described power supply 2 with these cathode circuits 21b, 23b is made the most individually to become For ON/OFF.

It addition, described second and the 4th DC voltage output circuit 22,24 have similarly Standby: second and the 4th booster transformer 22a, 24a, make the high frequency from the output of described power supply 2 Boost in voltage；First and second cathode traces 22b, 24b, will be by these booster transformers The high frequency voltage transformation that 22a, 24a have boosted is the DC high voltage of negative polarity, is respectively outputted to The spray point 11,12 of the described first and second group；And second and the 4th switch 22c, 24c, makes the electrical connection between described power supply 2 and these cathode traces 22b, 24b the most indivedual Ground becomes ON/OFF.

In this ion generator 1, it is configured to by the finger from described Polarity Control portion 30 Make signal, switch the combination of the described first～the 4th ON/OFF switching 21c～24c.Thus, Described direct voltage output portion 20 can be by n the spray point 11 belonging to described first group All apply the DC high voltage of positive polarity and to n the spray point belonging to described second group First polar mode of 12 DC high voltages all applying negative polarity and to belonging to described first N the spray point 11 of group all applies the DC high voltage of negative polarity and to belonging to described N the spray point 12 of two groups all applies the second polarity mould of the DC high voltage of positive polarity Some in formula is selectively output to described discharge part 10.That is, with by described first pole When sexual norm exports described discharge part 10, first and the 4th switchs 21c, 24c becomes ON, second and the 3rd switchs 22c, 23c becomes OFF, and its another aspect, by described When second polar mode exports described discharge part 10, second and the 3rd switchs 22c, 23c Becoming ON, first and the 4th switchs 21c, 24c becomes the mode of OFF, by described Command signal, controls each switch 21c～24c.

Described Polarity Control portion 30 includes: instruction circuit 31, exports and makes described DC voltage The signal corresponding to polar mode of output unit 20 output；And logic inversion circuit 32, make Invert from the output signal of this instruction circuit 31, the signal that this has been inverted as command signal, Output switchs 22c, 23c to described second and the 3rd.It addition, open for first and the 4th Close 21c, 24c, do not make the output signal from described instruction circuit 31 invert, and as former state Export as command signal.

Described instruction circuit 31 has: mark storage part 31a, time normal, storage is to described first Some in each mark i being assigned with of polar mode and described second polar mode； Mark update section 31b, switches to ON or from ON at described on and off switch 2a from OFF When switching to OFF, by the signal from power detecting portion 2b, will be in described mark storage The mark i that in portion 31a, the polar mode with a side of storage is corresponding is rewritten as the pole with the opposing party The mark i that sexual norm is corresponding；And instruction department 31c, export and at described mark storage part 31a The signal that the mark i (i.e. polar mode) of middle storage is corresponding.

Thus, such as, the mark i corresponding with the first polar mode is set to " ON (i=1) ", When the mark i corresponding with the second polar mode is set to " OFF (i=0) ", at described mark In the case of in storage part 31a, the mark i of storage is " ON (i=1) ", from described instruction department The signal that 31c output is corresponding with the first polar mode, according to this signal, from described Polarity Control Portion 30 to described direct voltage output portion 20 output make described first and the 4th switch 21c, 24c become ON, make second and the 3rd switch 22c, 23c become the command signal of OFF. Contrary ground, in described mark storage part 31a, the mark i of storage is " OFF (i=0) " In the case of, from the signal that described instruction department 31c output is corresponding with the second polar mode, according to this Signal, makes described the from described Polarity Control portion 30 to the output of described direct voltage output portion 20 Two and the 3rd switch 22c, 23c becomes ON, makes first and the 4th to switch 21c, 24c Become the command signal of OFF.

Then, whenever switching to ON to make ion occur from OFF described on and off switch 2a Device 1 when halted state starts or, whenever on and off switch 2a is switched to OFF from ON And make ion generator 1 when duty stops, the mark i of described mark storage part 31a It is written over by mark update section 31b.Its result, whenever making ion generator 1 start, Each spray point 11,12 to discharge part 10, the pole of middle contrary during applying the work with last time The DC high voltage of property.Therefore, the ion that just can suppress and bear is being played again fully In conjunction with, make more positive and negative each ion fly to the such DC mode in distant place (direct current mode) While strong point, make and use the institute such as burn into abrasion of the long life of time spray point together The degree of the deterioration caused is between spray point 11 and the spray point 12 of the second group of the first group Homogenization such that it is able to prevent ionic equilibrium through time deviation, simultaneously, additionally it is possible to improve make For belonging to the longevity of the life-span of these spray point 11,12 entirety of Liang Ge group, i.e. discharge part 10 Life.

It follows that according to the flow chart of Fig. 2, illustrate the control of described ion generator 1 First embodiment of method.In this control method, in described ion generator 1, Described on and off switch 2a is when OFF switches to ON, and described mark update section 31b will be in institute State the mark i corresponding to the polar mode with a side of storage in mark storage part 31a be rewritten as with The mark i that the polar mode of the opposing party is corresponding.

First, if on and off switch 2a is switched to ON (S1), the most described mark from OFF Will update section 31b judges that the mark i of storage is and described the in described mark storage part 31a " ON (i=1) " that one polar mode is corresponding or corresponding with described second polar mode " OFF (i=0) " (S2).Now, in the case of mark i is " ON (i=1) ", (i.e. at the on and off switch 2a of last time in meaning during the work of the ion generator 1 of last time During becoming ON) discharge part 10 is applied with the DC high voltage of the first polar mode, In the case of mark i is " OFF (i=0) ", it is meant that discharge part 10 is applied with second The DC high voltage of polar mode.

Then, in described step S2, in mark storage part 31a, the mark i of storage is In the situation (being i.e. the situation of " no " in the result judged) of " OFF (i=0) ", this mark I is rewritten as " ON (i=1) " (S3) by described mark update section 31b, according at this The mark i of new storage in mark storage part 31a, from instruction department 31c, exports and indicates that i=1 is i.e. " ON " signal (S4) that first polar mode is corresponding.Thus, by according to should " ON " believe Number from Polarity Control portion 30 output command signal, in direct voltage output portion 20, described First and the 4th switch 21c, 24c become ON, meanwhile, second and the 3rd switch 22c, 23c becomes OFF (S5), its result, from each to the first group of the first cathode circuit 21b Spray point 11 applies the DC high voltage of positive polarity, meanwhile, from the second cathode traces 24b pair Each spray point 12 of the second group applies the DC high voltage (S6) of negative polarity.That is, pass through Whole period in during the work of ion generator 1, from described direct voltage output portion 20 Discharge part 10 is exported continuously the DC high voltage of described first polar mode, from first group Positive ion released by the spray point 11 of group, meanwhile, releases negative from the spray point 12 of the second group Ion.

On the other hand, in described step S2, the mark of storage in mark storage part 31a I is that in the situation (being i.e. the situation of " yes " in the result judged) of " 1 ", this mark i passes through Described mark update section 31b is rewritten as " 0 " (S7), according at this mark storage part 31a In the mark i of new storage, from instruction department 31c output with indicate that i=0 that is second polar mode is corresponding " OFF " signal (S8).Thus, by the command signal exported from Polarity Control portion 30, In direct voltage output portion 20, described second and the 3rd switchs 22c, 23c becomes ON, Meanwhile, first and the 4th switch 21c, 24c become OFF (S9), its result, from the One cathode traces 22b applies the DC high voltage of negative polarity to spray point 11, meanwhile, from Two cathode circuit 23b apply the DC high voltage (S10) of positive polarity to spray point 12.That is, By the whole period in during the work of ion generator 1, from described direct voltage output portion 20 pairs of discharge parts 10 export the DC high voltage of described second polar mode continuously, from first Negative ion released by the spray point 11 of group, releases from the spray point 12 of the second group meanwhile Positive ion.

If it follows that on and off switch 2a switches to OFF (S11) from ON, then from institute State power supply 2 to be cut off for the power supply in direct voltage output portion 20, thus from described first, The ion of the spray point 11,12 of the second group is released and is terminated.It addition, now, at described mark In will storage part 31a, the mark i of storage is kept as former state.

Fig. 3 is shown through when the first embodiment shown in Fig. 2 controls ion generator 1 Sequential chart.

First, at moment t1, if the mark i of storage in described mark storage part 31a On and off switch 2a is made to become ON under the state being " OFF (i=0) ", then by described mark Update section 31b, in mark storage part 31a, the mark i of storage is to described second polarity mould " OFF (i=0) " that formula is assigned with is rewritten as being assigned with described first polar mode " ON (i=1) ".Then, by according to the mark i of storage in this mark storage part 31a The command signal that (=1) exports from Polarity Control portion 30, described first and the 4th switch 21c, 24c becomes ON, and described second and the 3rd switchs 22c, 23c becomes OFF.Its result, Discharge part 10 is applied the DC high voltage of the first polar mode, from putting of described first group Acusector 11 releases positive ion, simultaneously from the spray point 12 of described second group release negative from Son.

It follows that at moment t2, if making on and off switch 2a become OFF, then to described Executing of the DC high voltage of the spray point 11 of one group and the spray point 12 of described second group Adding and become OFF, being stopped so releasing from the ion of these spray points 11,12.Now, In described mark storage part 31a, the mark i of storage is remained " ON (i=1) " as former state, But described first and the 4th switchs 21c, 24c becomes OFF from ON.

It follows that at moment t3, if the mark i of storage in described mark storage part 31a On and off switch 2a is again made to become ON under the state being " ON (i=1) ", then by described Mark update section 31b, in mark storage part 31a, the mark i of storage is from " ON (i=1) " It is rewritten as " OFF (i=0) ".Then, by according to depositing in this mark storage part 31a The command signal that exports from Polarity Control portion 30 of mark i (=0) of storage, described first and the Four switch 21c, 24c become OFF, and described second and the 3rd switchs 22c, 23c becomes ON.Its result, to discharge part 10, this applies the DC high voltage of the second polar mode, from Negative ion released by the spray point 11 of described first group, simultaneously putting from described second group Acusector 12 releases positive ion.

And then, at moment t4, if again making on and off switch 2a become OFF, then from described The ion of the spray point 11 of the first group and the spray point 12 of described second group is released and is stopped Only.Now, in described mark storage part 31a, the mark i of storage is kept " OFF as former state (i=0) ", but described second and the 3rd switch 22c, 23c become OFF from ON.With After, whenever making on and off switch 2a become ON/OFF, the most same action.

It follows that according to the flow chart of Fig. 4, illustrate the control of described ion generator 1 Second embodiment of method.In this control method, in described ion generator 1, Described on and off switch 2a is when ON switches to OFF, and described mark update section 31b will be in institute State the mark i corresponding to the polar mode with a side of storage in mark storage part 31a be rewritten as with The mark i that the polar mode of the opposing party is corresponding.

First, if on and off switch 2a is switched to ON (S21) from OFF, then described Mark update section 31b judges that the mark i of storage is with described in described mark storage part 31a " ON (i=1) " that first polar mode is corresponding or corresponding with described second polar mode " OFF (i=0) " (S22).Now, in the case of mark i is " ON (i=1) ", (i.e. at the on and off switch 2a of last time in meaning during the work of the ion generator 1 of last time During becoming ON) discharge part 10 is applied with the DC high voltage of the second polar mode, In the case of mark i is " OFF (i=0) ", it is meant that discharge part 10 is applied with first The DC high voltage of polar mode.

Then, in described step S22, in mark storage part 31a, the mark i of storage is In the situation of " ON (i=1) " (being i.e. the situation of " yes " in the result judged), according to The mark i of storage in this mark storage part 31a, from instruction department 31c output and mark i=1 that is the " ON " signal (S23) that one polar mode is corresponding.Thus, with described first embodiment Situation similarly, by the command signal exported from Polarity Control portion 30, at DC voltage In output unit 20, described first and the 4th switchs 21c, 24c becomes ON, meanwhile, the Two and the 3rd switch 22c, 23c becomes OFF (S24), and its result, from the first positive electrical Road 21b applies the DC high voltage of positive polarity to each spray point 11 of the first group, meanwhile, From the second cathode traces 24b, each spray point 12 of the second group is applied the direct current height of negative polarity Voltage (S25).

On the other hand, in described step S22, the mark of storage in mark storage part 31a I is in the situation (being i.e. the situation of " no " in the result judged) of " 0 ", according at this mark The mark i of storage in storage part 31a, from instruction department 31c output and mark i=0 that is second polarity " OFF " signal (S26) that pattern is corresponding.Thus, by exporting from Polarity Control portion 30 Command signal, in direct voltage output portion 20, described second and the 3rd switch 22c, 23c becomes ON, and meanwhile, first and the 4th switchs 21c, 24c becomes OFF (S27), Its result, applies the DC high voltage of negative polarity from the first cathode traces 22b to spray point 11, Meanwhile, from the second cathode circuit 23b, spray point 12 is applied the DC high voltage of positive polarity (S28)。

It is it follows that if on and off switch 2a switches to OFF (S29) from ON, then described Mark update section 31b judges that the mark i of storage is in described mark storage part 31a again " ON (i=1) " or " OFF (i=0) " (S30).Its result, at mark storage part In 31a storage mark i be " ON (i=1) " situation (i.e. judge result be " yes " Situation) under, this mark i is rewritten as " OFF (i=0) " by described mark update section 31b (S31), in mark storage part 31a, the mark i of storage is the situation of " OFF (i=0) " Under (being i.e. the situation of " no " in the result judged), this mark i is by described mark update section 31b is rewritten as " ON (i=1) " (S32).Then, from described power supply 2 for direct current The power supply of voltage output unit 20 is cut off, so from the spray point of described first, second group 11, the ion of 12 is released and is terminated.It addition, now, store in described mark storage part 31a Mark i kept as former state.

Fig. 5 is shown through when the second embodiment shown in Fig. 4 controls ion generator 1 Sequential chart.

First, at moment t1, if the mark i of storage in described mark storage part 31a On and off switch 2a is made to become ON under the state being " ON (i=1) ", then by according at this The mark i (=1) of storage in mark storage part 31a is (i.e. to described first polar mode distribution The command signal that exports from Polarity Control portion 30 of mark i), described first and the 4th open Closing 21c, 24c and become ON, described second and the 3rd switchs 22c, 23c becomes OFF. Its result, releases positive ion from the spray point 11 of described first group, simultaneously from described the Negative ion released by the spray point 12 of two groups.

It follows that at moment t2, if making on and off switch 2a become OFF, then by described Mark update section 31b, in mark storage part 31a, the mark i of storage is from " ON (i=1) " It is rewritten as " OFF (i=0) " that described second polar mode is assigned with.Then, to institute State the spray point 11 of the first group and the DC high voltage of the spray point 12 of described second group Applying to become OFF, being stopped so releasing from the ion of these spray points 11,12.Now, In described mark storage part 31a, the mark i of storage is remained " OFF (i=0) " as former state, But described first and the 4th switchs 21c, 24c becomes OFF from ON.

It follows that at moment t3, if the mark i of storage in described mark storage part 31a Again make on and off switch 2a become ON under the state being " OFF (i=0) ", then pass through basis The finger that the mark i (=0) of storage exports from Polarity Control portion 30 in this mark storage part 31a Make signal, described first and the 4th switch 21c, 24c become OFF, described second and 3rd switch 22c, 23c becomes ON.Its result, from the spray point 11 of described first group Release negative ion, release positive ion from the spray point 12 of described second group simultaneously.

And then, at moment t4, if again making on and off switch 2a become OFF, then pass through institute Stating mark update section 31b, in mark storage part 31a, the mark i of storage is from " OFF (i=0) " It is rewritten as " ON (i=1) ".Then, from spray point 11 and the institute of described first group The ion of the spray point 12 stating the second group is released and is stopped.Now, in described mark storage In portion 31a storage mark remained as former state " ON (i=1) ", but described second and 3rd switch 22c, 23c becomes OFF.After, become ON/OFF whenever making on and off switch 2a Time, the most same action.

Above, embodiments of the present invention are described in detail, but the invention is not restricted to these, when So can implement various design alteration in the scope without departing from idea of the invention.

Claims (3)

1. an ion generator, possesses:

Discharge part, has the ion just released according to the polarity of the DC voltage applied or bearing 2n spray point, every n of these spray points is grouped into the first group and the second group, Wherein, n is natural number；

Polarity output unit, it is possible to by some in the first polar mode and the second polar mode Being selectively output to described discharge part, this first polar mode is to apply described first group The DC voltage of positive polarity and the mould of the DC voltage to described second group's applying negative polarity Formula, this second polar mode is that described first group applies the DC voltage of negative polarity and right Described second group applies the pattern of the DC voltage of positive polarity；

Polarity Control portion, controls the polar mode from the output of described polarity output unit；And

Power supply, is connected with described polarity output unit, it is possible to make the power supply for this polarity output unit Become ON/OFF,

Described ion generator is characterised by:

Described Polarity Control portion has:

Mark storage part, stores described first polar mode and described second polar mode Some in each mark being assigned with；And

Mark update section, described power supply from OFF to ON or from ON to OFF switch Time, the mark of a side of storage in described mark storage part is rewritten as the mark of the opposing party also Store it in described mark storage part,

When starting ion generator, will be used for from described polarity output unit defeated to described discharge part Go out the command signal of polar mode corresponding to mark revised with in described mark update section Output is to this polarity output unit.

Ion generator the most according to claim 1, it is characterised in that:

Described polarity output unit has:

First cathode circuit, the unidirectional current to the spray point applying positive polarity of described first group Pressure；

First cathode traces, the unidirectional current to the spray point applying negative polarity of described first group Pressure；

Second cathode circuit, the unidirectional current to the spray point applying positive polarity of described second group Pressure；

Second cathode traces, the unidirectional current to the spray point applying negative polarity of described second group Pressure；

First switch, makes the electrical connection between described power supply and described first cathode circuit become ON/OFF；

Second switch, makes the electrical connection between described power supply and described first cathode traces become ON/OFF；

3rd switch, makes the electrical connection between described power supply and described second cathode circuit become ON/OFF；And

4th switch, makes the electrical connection between described power supply and described second cathode traces become ON/OFF,

By the command signal from described Polarity Control portion, make described first switch and described the Four switches become ON, and make described second switch and described 3rd switch become OFF, from And export described first polar mode, make described first switch and described 4th switch become OFF, and make described second switch and described 3rd switch become ON, thus output is described Second polar mode.

3. a control method for ion generator, this ion generator possesses:

Discharge part, has the ion just released according to the polarity of the DC voltage applied or bearing 2n spray point, every n of these spray points is grouped into the first group and the second group, Wherein, n is natural number；

Polarity output unit, it is possible to by some in the first polar mode and the second polar mode Being selectively output to described discharge part, this first polar mode is to apply described first group The DC voltage of positive polarity and the mould of the DC voltage to described second group's applying negative polarity Formula, this second polar mode is that described first group applies the DC voltage of negative polarity and right Described second group applies the pattern of the DC voltage of positive polarity；

Polarity Control portion, has: mark storage part, store described first polar mode and Some in each mark being assigned with of described second polar mode；And mark updates Portion, is rewritten as the mark of the opposing party also by the mark of a side of storage in described mark storage part Storing it in described mark storage part, described Polarity Control portion will be used for described discharge part defeated Go out the command signal of polar mode corresponding to mark revised with in described mark update section Output is to described polarity output unit；And

Power supply, is connected with described polarity output unit, it is possible to make the power supply for this polarity output unit Become ON/OFF,

Described control method is characterised by:

At described power supply from becoming ON to during the work becoming OFF, by from institute State the command signal in Polarity Control portion, from described polarity output unit to described discharge part, continuously Export described first polar mode corresponding with the mark of described mark storage part storage and institute State the polar mode of one party in the second polar mode, after described power supply becomes OFF or After the following power supply of person becomes ON, by the mark of a side of storage in described mark storage part It is rewritten as the mark of the opposing party by described mark update section and stores it in described mark and deposit Storage portion, when starting ion generator next time, by rewriting with in described mark update section Polar mode corresponding to mark export described discharge part, at each described power supply from OFF When switching to ON ion generator to start, to the output of described discharge part and the work phase in last time The polar mode of the opposing party that the polar mode of a side of output is different between.