JP2009016288A - High-voltage generating circuit, ion generator, and electric device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-voltage generation circuit which can be made compact in size, can adjust an output voltage, and can adjust a frequency, at which high voltage to be output is generated, for each plurality of voltage output sections. <P>SOLUTION: The high-voltage generation circuit includes: a first and second boosters each of which boosts voltage supplied to a primary coil by means of mutual induction so as to output the boosted voltage at a secondary coil; a first switching portion which switches on/off of DC power supplied from a DC power supply to the first booster, in accordance with a state of a given first pulse signal; a second switching portion which switches on/off of DC power supplied from a DC power supply to the second booster, in accordance with a state of a given second pulse signal; and a control section which generates a first and second pulse signals to perform switching operation in the first and second switching sections. The control section can adjust individual pulse width and pulse interval for each pulse signal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a high voltage generation circuit that generates a high voltage, an ion generation device, and an electrical apparatus.

  In general, in a sealed room with little ventilation, such as an office or a meeting room, if there are many people in the room, air pollutants exhausted by breathing, cigarette smoke, dust, and other air pollutants increase. The negative ions, which have the effect of relaxing, decrease from the air. In particular, when tobacco smoke is present, the negative ions may be reduced to about 1/2 to 1/5 of the normal amount. Therefore, various ion generators have been commercially available to replenish negative ions in the air.

  However, all of the conventional ion generators generate only negative ions by a direct current high voltage method. Therefore, in such an ion generator, negative ions can be replenished in the air, but airborne bacteria and the like in the air cannot be positively removed.

In view of such problems, the present applicant has determined that H ⁺ (H ₂ O) _{m that} is a positive ion and O ₂ ⁻ (H ₂ O) _n that is a negative ion (m and n are natural numbers) in the air. By generating approximately the same amount, both ions adhere to airborne bacteria etc. in the air, and the active species hydrogen peroxide (H ₂ O ₂ ) and / or hydroxyl radicals (.OH) are decomposed. The ion generator which can remove the said floating bacteria with an effect | action was proposed (for example, refer patent document 1, 2).

  The above-mentioned ion generator has already been put into practical use by the present applicant, and as a practical machine, an ion generator having a structure in which a discharge electrode is disposed on the outside and an induction electrode is disposed on the inside, with a ceramic dielectric interposed therebetween, And air cleaners and air conditioners equipped with the same.

  However, the ion generator that can inactivate the above-mentioned floating molds and the like generates both positive ions and negative ions at the same time. There was a problem that ions could not be efficiently released into the room. In view of this problem, the present inventors have already made an invention related to an ion generator capable of efficiently discharging ions into a room (see Patent Document 3).

  The ion generator disclosed in Patent Document 3 is not a system in which positive ions and negative ions are alternately generated at a predetermined period in a single discharge unit, but a single unit having a plurality of discharge units that generate ions. By separately generating positive ions and negative ions with a plurality of ion generating elements, or separately generating positive ions and negative ions with a plurality of ion generating elements, each bipolar ion is independently released into the room. The structure is adopted. By adopting such a configuration, the generated positive ions and negative ions are prevented from neutralizing and disappearing near the electrode of the ion generating element, and the generated bipolar ions are efficiently released in a well-balanced space. It is possible.

  Here, the waveform of the voltage applied between the electrodes of the ion generator disclosed in Patent Document 3 is shown in FIG. A voltage waveform E1 in FIG. 15 is a waveform of a voltage applied between electrodes of a discharge part that generates positive ions, and a voltage waveform E2 is a waveform of a voltage applied between electrodes of a discharge part that generates negative ions. is there.

According to Patent Document 4, positive ions and negative ions are alternately generated by separate discharge parts (needle-like), so that even when used under a condition where the amount of air to send ions into the air is small, it is possible to efficiently An ion generator capable of diffusing positive ions and negative ions in air has been proposed.
JP 2002-319472 A JP 2003-47651 A JP 2004-363088 A JP 2005-243288 A

  According to the ion generators disclosed in Patent Documents 1 to 3, since airborne bacteria and the like in the air can be positively removed, the indoor environment can be made more comfortable. However, since these ion generators generate positive ions and negative ions at the same time, if they are used in a condition where the air volume for sending ions into the air is small, both ions are immediately combined. Therefore, it was necessary to diffuse ions into the wind by blowing air.

  Furthermore, since the ion generator shown in Patent Document 3 uses a commercial AC power supply as an input power supply, the discharge energy is temporarily stored in a capacitor, and charging / discharging of the capacitor is switched by a semiconductor switch element. It has become. Therefore, a high withstand voltage, large capacity capacitor and a high withstand voltage semiconductor switching element are required, and there is a problem that downsizing of the product is hindered.

  Furthermore, the ion generator shown in Patent Document 3 has a problem that discharge energy is temporarily stored in a capacitor, and the number of discharges per unit time of the capacitor, that is, the amount of generated ions cannot be arbitrarily controlled. ing.

  Furthermore, although the ion generator shown by patent document 4 produces | generates positive ion and negative ion alternately, it cannot change freely each generation frequency, ie, the generation amount of positive ion and negative ion is changed arbitrarily. It has the problem that it cannot be done.

  In view of the above-described problems, the present invention provides a high voltage generation circuit that can be reduced in size, an ion generation device that includes the high voltage generation circuit, and an electrical device that includes the ion generation device. The first purpose.

  Furthermore, a high voltage generation circuit capable of adjusting the value of the high voltage to be output, an ion generator equipped with the high voltage generation circuit, which can prevent the destruction of the discharge portion, and the ion generation apparatus are mounted. A second object is to provide an electrical device.

  Furthermore, a high voltage generation circuit capable of separately adjusting the frequency of generation of the high voltage to be output for each of the plurality of voltage output units, an ion generator capable of arbitrarily controlling the amount of ions generated by installing the high voltage generation circuit, A third object of the present invention is to provide an electric device equipped with the ion generator.

  In order to achieve the above object, a high voltage generating circuit according to the present invention has a primary side coil and a secondary side coil, boosts the voltage supplied to the primary side coil by mutual induction, and At least two boosting units (referred to as “first boosting unit” and “second boosting unit”) output from the secondary coil, and intermittent supply of DC power from a DC power source to the first boosting unit. , Switching according to the state of the predetermined first pulse signal, switching between the first switching unit and the intermittent supply of DC power from the DC power source to the second boosting unit according to the state of the predetermined second pulse signal A high voltage generation circuit comprising: a second switching unit; and a control unit that controls the switching in the first switching unit and the second switching unit by generating the first pulse signal and the second pulse signal. And the control unit includes the first pulse signal and the second pulse. For each signal, separately, a configuration can adjust the pulse width and the pulse interval (first configuration).

  According to this configuration, the intermittent supply of DC power from a DC power source such as a battery to each booster can be switched to cause mutual induction in each booster. For this reason, it is not necessary to use a commercial AC power source as a power source. As a result, a high withstand voltage such as a switching element or a capacitor with a high withstand voltage and a large capacity is not required, and the product can be easily downsized.

  In addition, it is possible to control the voltage output from each booster through adjustment of the state of the first pulse signal and the second pulse signal. Therefore, for example, even when this output voltage is applied to the ion generating element, it is easy to prevent a situation in which an excessive voltage is applied to the ion generating element and to avoid damage to the ion generating element. Become.

  Further, since the pulse width and the pulse interval can be adjusted separately for each of the first pulse signal and the second pulse signal, the voltage output from the first booster and the voltage output from the second booster are separately set. It is possible to adjust to. Therefore, for example, when the output voltage of the first booster is used to generate positive ions and the output voltage of the second booster is used to generate negative ions, the generation amount of positive ions and negative ions can be adjusted separately. It becomes possible.

  Further, in this case, by shifting the pulse generation timing in the first pulse signal and the second pulse signal, the generation timing of the positive ions and the negative ions is shifted, and as a result, both ions can be prevented from being immediately combined. It becomes possible.

  More specifically, as the first configuration, the first booster and the second booster may be configured to include a transformer or a trigger coil (second configuration).

  Further, in the first or second configuration, a first rectifying element that biases the output voltage of the first boosting unit positively, and a second rectifying element that biases the output voltage of the second boosting unit negatively. It is good also as a structure (3rd structure) provided.

  According to this configuration, the output voltage of the first booster can be biased to a positive voltage, and the output voltage of the second booster can be biased to a negative voltage. As a result, it becomes easy to generate both positive ions and negative ions.

  In the third configuration, more specifically, the first rectifier element is a diode having an anode connected to the first booster side, and the second rectifier element has a cathode that is the second booster. A configuration (fourth configuration) that is a diode connected to the portion side may be employed.

  As any one of the first to fourth configurations, more specifically, the first switching element and the second switching element are each configured by a MOSFET or a bipolar transistor (fifth configuration). It is good.

  Further, as any one of the first to fifth configurations, more specifically, the control unit includes a microcomputer that controls generation of the first pulse signal and the second pulse signal by software, or the first The generation of the one pulse signal and the second pulse signal may be configured as a dedicated LSI that is controlled by hardware (sixth configuration).

  More specifically, as the first configuration, the first booster outputs an AC impulse voltage in response to arrival of a pulse of the first pulse signal, and the second booster An AC impulse voltage may be output in response to the arrival of the pulse of the second pulse signal (seventh configuration), and the voltage output from the first booster and the second booster may be The value may be configured to vary according to the value of the DC voltage supplied from the DC power supply (eighth configuration).

  The high voltage generation circuit according to the present invention has a primary side coil and a secondary side coil, boosts the voltage supplied to the primary side coil by mutual induction, and outputs the boosted voltage from the secondary side coil. , Intermittent supply of DC power to at least two boosting units (referred to as “first boosting unit” and “second boosting unit”) and the primary side coil related to the first boosting unit, A first switching unit that switches according to the first signal, and a second switching unit that switches between intermittently supplying DC power to the primary coil of the second boosting unit according to a predetermined second signal And a control unit that generates the first signal and the second signal and controls switching in the first switching unit and the second switching unit, wherein the control unit includes: A configuration in which each of the first signal and the second signal is generated independently of each other (ninth Configuration) to.

  The ion generator according to the present invention generates ions by applying a high voltage generation circuit according to any one of the first to ninth configurations and an output voltage of the first boosting unit. A configuration (tenth configuration) is provided that includes an electrode and a second electrode that generates ions by applying an output voltage of the second booster.

  According to this configuration, ions can be generated through the first electrode and the second electrode using the high voltage generated by the high voltage generation circuit having the above configuration.

  In the tenth configuration, the first electrode generates positive ions when a positive voltage is applied, and the second electrode generates negative ions when a negative voltage is applied. The positive ion generation amount varies according to the pulse interval of the first pulse signal, and the negative ion generation amount varies according to the pulse interval of the second pulse signal (eleventh configuration). ).

  In the tenth or eleventh configuration, the voltage applied to the first electrode varies in accordance with the pulse width of the first pulse signal, and the voltage applied to the second electrode is the second voltage. A configuration that varies according to the pulse width of the pulse signal (a twelfth configuration) may be employed.

  In any of the tenth to twelfth configurations, the first electrode or the second electrode has a needle-like shape, and ions are generated by performing air discharge from the needle-like needle tip. It is good also as a structure (13th structure) to generate.

  In any one of the tenth to thirteenth configurations, the positive ion is provided with a counter electrode that is grounded and is disposed so as to face the first electrode or the second electrode with outside air interposed therebetween. Alternatively, a configuration in which negative ions are diffused toward the counter electrode (fourteenth configuration) may be employed. According to this configuration, it is possible to further promote the diffusion of ions in the outside air.

  Further, in any one of the tenth to thirteenth configurations, a counter electrode disposed so as to face the first electrode or the second electrode across the outside air is provided, and the counter electrode, The first electrode or the second electrode is electrically connected to each other to form a circuit, and the circuit may be in a floating configuration (fifteenth configuration).

  According to this configuration, since the charge amount of the circuit including the counter electrode and the first electrode or the second electrode is preserved except for the air discharge, the potential state of the counter electrode is set to the first electrode or the second electrode. It becomes easy to reverse the potential state. Therefore, it becomes easy to diffuse ions generated in the vicinity of the first electrode or the second electrode toward the counter electrode.

  As the fourteenth or fifteenth configuration, more specifically, the counter electrode may have a cylindrical shape (sixteenth configuration), and the counter electrode may have a mesh shape. It is good also as a structure (17th structure) which has this shape.

In any of the tenth to seventeenth aspects, more specifically, the positive ion is H ⁺ (H ₂ O) _m (where m is a natural number), and the negative ion is O _2. ^- (H ₂ O) _n (where n is a natural number). According to this configuration, it is possible to remove floating bacteria by ions.

  In addition, if the electric device includes the ion generation device according to any one of the tenth to eighteenth configurations, the electric device that can enjoy the advantages of the above configuration can be obtained.

  Further, in the first configuration, the control unit outputs the first pulse signal and the second pulse signal so that a pulse period in the first pulse signal and a pulse period in the second pulse signal do not overlap each other. It is good also as a structure to generate.

  According to this configuration, for example, when generating positive ions using the output voltage of the first booster and generating negative ions using the output voltage of the second booster, the timing of generating both ions can be shifted. It becomes possible. Therefore, it is possible to avoid the situation where both ions are immediately combined.

  As described above, according to the high voltage generation circuit and the ion generator of the present invention, the intermittent supply of DC power from a DC power source such as a battery to each booster is switched, and mutual induction is generated in each booster. It is possible. For this reason, it is not necessary to use a commercial AC power source as a power source. As a result, a high withstand voltage such as a switching element or a capacitor with a high withstand voltage and a large capacity is not required, and the product can be easily downsized.

  In addition, it is possible to control the voltage output from each booster through adjustment of the state of the first pulse signal and the second pulse signal. Therefore, for example, even when this output voltage is applied to the ion generating element, it is easy to prevent a situation in which an excessive voltage is applied to the ion generating element and to avoid damage to the ion generating element. Become.

  Further, since the pulse width and the pulse interval can be adjusted separately for each of the first pulse signal and the second pulse signal, the voltage output from the first booster and the voltage output from the second booster are separately set. It is possible to adjust to. Therefore, for example, when the output voltage of the first booster is used to generate positive ions and the output voltage of the second booster is used to generate negative ions, the generation amount of positive ions and negative ions can be adjusted separately. It becomes possible.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram showing a configuration example of an ion generator (circuit) according to the present invention. As shown in this figure, the ion generator 1 includes a first ion generating element 21 having a discharge part, a second ion generating element 22, and a high voltage generating apparatus (a high voltage generator that applies a high voltage to these ion generating elements ( Circuit) 100. The “high voltage” means a voltage that is high enough to allow generation of ions when applied to the ion generating element.

  In the high voltage generator 200, the first boosting unit 13, the second boosting unit 14, the first switching element 15, the second switching element 16, the control unit 9, and the like are connected as shown in FIG. Configured.

  The first booster 13 boosts a DC voltage output from a DC power source 20 such as a battery and outputs a high voltage to the first ion generating element 21 connected to the secondary side (downstream side). . Similarly, the second booster 14 boosts the DC voltage output from the DC power supply 20 and outputs a high voltage to the second ion generating element 22 connected to the secondary side (downstream side).

  The first switching element 15 switches ON / OFF of the supply of DC power from the DC power supply 20 to the first booster 13. This switching is performed according to the first pulse signal output from the control unit 9. The second switching element 16 switches ON / OFF of the supply of DC power from the DC power supply 20 to the second booster unit 14. This switching is performed according to the second pulse signal output from the control unit 9.

  The control unit 9 generates a first pulse signal and a second pulse signal, for example, in response to an instruction from the user, and outputs the first pulse signal and the second pulse signal to each switching element (15, 16). Thereby, the switching operation in each switching element (15, 16) is controlled.

  With the configuration described above, the ion generator 1 generates ions by generating a positive or negative high voltage in each ion generating element (21, 22) based on the power supplied from the DC power supply 20. . Moreover, as the DC power source 20, a power source smaller than a commercial AC power source (usually about 100V to 200V) is applicable. Therefore, the switching elements (15, 16) do not need to be high breakdown voltage components, and it is not necessary to provide a high breakdown voltage and large capacity capacitor for temporarily storing discharge energy.

  As a result, the high voltage generator 200 can be miniaturized as much as possible. However, if the DC voltage supplied from the DC power supply 20 is too large, it is necessary to increase the withstand voltage performance of the switching elements (15, 16). Therefore, the magnitude of the DC voltage output from the DC power supply 20 is necessary. It is desirable that the voltage is suppressed to a minimum (for example, 24 V or less).

  Next, a more specific configuration of the ion generator shown in FIG. 1 will be described with reference to FIG. As shown in the figure, the ion generation apparatus 1 applies a high voltage to the needle-like first ion generation element 21 having the discharge portion, the second second ion generation element 22, and these ion generation elements. It is comprised by the high voltage generator 200 etc. to apply.

  The high voltage generator 200 includes a trigger coil 23, a trigger coil 24, a diode 28, a diode 29, a MOSFET [Metal Oxide Semiconductor FET] 25, a MOSFET 26, an arithmetic processing unit 27, and the like. The high voltage generator 200 is assumed to be connected to a DC power supply (30, 31).

  More specifically, the positive electrode of the DC power supply 31 is connected to the power supply terminal of the arithmetic processing unit 27. The positive electrode of the DC power supply 30 is connected to one end of the primary winding (L1) of the trigger coil 23 and one end of the secondary winding. The negative electrode of the DC power source 30 and the negative electrode of the DC power source 31 are grounded.

  On the other hand, in the ion generator 1, the GND (ground) terminal of the arithmetic processing unit 27 is grounded. The other end of the primary winding (L1) of the trigger coil 23 is connected to the drain terminal of the MOSFET 25. The source terminal of the MOSFET 25 is grounded. The gate terminal of the MOSFET 25 is connected to the output side of the first pulse generator 27 </ b> B of the arithmetic processing unit 27.

  The other end of the secondary winding of the trigger coil 23 is connected to the anode of the diode 28. The cathode of the diode 28 is connected to the first ion generating element 21. The other end of the primary winding of the trigger coil 24 is connected to the drain terminal of the MOS FET 26. The source terminal of the MOS FET 26 is grounded. The gate terminal of the MOS FET 25 is connected to the output side of the second pulse generator 27C of the arithmetic processing unit 27. The other end of the secondary winding of the trigger coil 24 is connected to the cathode of the diode 29. The anode of the diode 29 is connected to the second ion generating element 22.

  The trigger coil 23 performs the function of the first booster 13 described above. More specifically, the voltage supplied from the DC power supply 30 to the primary coil (L1) is boosted by mutual induction and output from the secondary coil (L2). As will be described later, the DC voltage input to the primary coil is interrupted by the switch means (thus changing the voltage), and electromagnetic induction occurs in the trigger coil 23. The trigger coil 24 fulfills the function of the second booster 14 described above. More specifically, the voltage supplied from the DC power supply 30 to the primary coil is boosted by mutual induction and output from the secondary coil.

  The diode 28 suppresses the negative voltage of the AC impulse signal generated on the secondary side of the trigger coil 23 by a rectifying action and biases it to a positive voltage. In the present application, such biasing to a positive voltage (generating a positive voltage as a whole) is appropriately expressed as “bias positively”.

  The diode 29 suppresses a positive voltage by an rectifying action and biases it to a negative voltage with respect to an AC impulse signal generated on the secondary side of the trigger coil 24. In the present application, such biasing to a negative voltage (generating a negative voltage as a whole) is appropriately expressed as “bias negatively”.

  The MOS FET 25 performs the function of the first switching element 15 described above. More specifically, the direct current voltage from the direct current power source 30 is supplied to the primary coil of the trigger coil 23 only when the pulse of the first pulse signal input to the gate arrives. The MOS FET 26 fulfills the function of the second switching element 16 described above. More specifically, the DC voltage from the DC power supply 30 is supplied to the primary coil of the trigger coil 24 only when the pulse of the second pulse signal input to the gate arrives.

  The arithmetic processing unit 27 performs the function of the control unit 9 described above, and includes a pulse signal generation unit 27B that generates a first pulse signal, a pulse signal generation unit 27C that generates a second pulse signal, and these pulses. A timer 27A for adjusting the pulse width and pulse interval of the signal is provided.

  Thereby, for example, a first pulse signal and a second pulse signal having a pulse width and a pulse interval corresponding to a user instruction (button operation or the like) are generated. And these pulse signals are output to each MOSFET (25, 26), and the switching operation | movement in these is controlled. As will be described later, the pulse width and pulse interval of the first pulse signal and the second pulse signal can be set or changed separately (independently from each other). For example, if the user presets the pulse width of the first pulse signal to 0.2 μsec, the pulse interval is also 1.5 msec, the pulse width of the second pulse signal is 0.5 μsec, and the pulse interval is also set to 1.8 msec. Each pulse signal is generated so as to satisfy these setting contents.

  As the arithmetic processing unit 27, for example, a microcomputer that controls the generation of the pulse signal and the adjustment of the pulse width and the pulse interval of the pulse signal by software may be adopted. The generation of the pulse signal, the pulse width of the pulse signal, A dedicated LSI that controls the adjustment of the pulse interval by hardware may be employed. If adjustment of the value of the high voltage output from the high voltage generator 200 and adjustment of the frequency of generation of the high voltage output from the high voltage generator 200 are not necessary, the timer 19 is removed and the first pulse is removed. The waveform of the pulse signal generated by the signal generator 17 and the second pulse signal generator 18 may be fixed.

  Next, operation | movement of the ion generator 1 mentioned above is demonstrated. When a pulse in the first pulse signal output from the arithmetic processing unit 27 arrives, the MOSFET 25 is temporarily turned on. As a result, when a current flows through the primary winding of the trigger coil 23, a high voltage determined by the turn ratio between the primary side and the secondary side is generated in the secondary winding of the trigger coil 23 by mutual induction. . This high voltage is biased positively by the diode 28 and applied to the first ion generating element 21.

  Thereafter, the MOS FET (25, 26) is in an OFF state until the next pulse is output at an interval controlled by the timer 27A of the arithmetic processing unit 27, and the discharge electrode of the first ion generating element 21 High voltage is not applied. These high voltage generation operations are repeated according to a pulse signal output at an interval controlled by the timer 27A of the arithmetic processing unit 27.

  On the other hand, when the pulse in the second pulse signal output from the arithmetic processing unit 27 arrives, the MOSFET 26 is temporarily turned on. As a result, when a current flows through the primary winding of the trigger coil 24, a high voltage determined by the turn ratio between the primary side and the secondary side is generated in the secondary winding of the trigger coil 24 by mutual induction. . This high voltage is negatively biased by the diode 29 and applied to the second ion generating element 22.

  Thereafter, until the next pulse is output at an interval controlled by the timer 27A of the arithmetic processing unit 27, the MOSFET 26 is in an OFF state, and no high voltage is applied to the discharge electrode of the second ion generating element 22. These high voltage generation operations are repeated according to a pulse signal output at an interval controlled by the timer 27A of the arithmetic processing unit 27.

  Here, FIG. 3A shows an example of the waveform of the first pulse signal output from the first pulse generator 27B, that is, the gate signal of the MOSFET 25. FIG. An example of the waveform of the second pulse signal output from the second pulse generator 27C, that is, the gate signal of the MOSFET 26 is shown in FIG.

  By switching between conduction / non-conduction between the source and the drain in the MOSFET (25, 26) by such each pulse signal, the power state in the primary coil of each trigger coil (23, 24) is also changed to the pulse signal. Equivalent waveforms (current does not flow when no pulse arrives, current flows when pulse arrives). Therefore, the secondary coil of the trigger coil 23 is in a voltage state as shown in FIG. 3C (actually, it has a higher frequency than that shown in the figure), and this voltage is output from the trigger coil 23. become. Further, the secondary coil of the trigger coil 24 is in a voltage state as shown in FIG. 3D (actually, a higher frequency than that shown in the figure), and the voltage is output from the trigger coil 24. Become.

  Since the voltage output from the trigger coil 23 is positively biased by the diode 28, the first ion generating element 21 is approximately in a voltage state as shown in FIG. Since the voltage output from the trigger coil 24 is negatively biased by the diode 29, the second second ion generating element 22 is in a voltage state as shown in FIG. 4B.

At this time, if the voltage in the first ion generating element 21 has reached the discharge start voltage of the first ion generating element 21 (for example, the voltage indicated by + V _BD in the drawing), the first ion generating element 21 Positrons are emitted from the tip of the needle into the air (so-called electron emission type). As a result, the air around the first ion generating element 21 is ionized to generate positive ions H ⁺ (H ₂ O) _m (m is a natural number). Note that positive ions may be generated when electrons are taken into the first ion generating element 21 from the air.

Further, if the voltage at the second ion generating element 22 reaches the discharge start voltage of the second ion generating element 22 (for example, the voltage indicated by −V _BD in the drawing), the second ion generating element 22 is reached. Negative electrons are emitted from the tip of the needle into the air. As a result, the air around the second ion generating element 22 is ionized, and negative ions O ₂ ⁻ (H ₂ O) _n (n is a natural number) are generated. In this way, every time the pulse of the first pulse signal or the second pulse signal arrives, positive ions H ⁺ (H ₂ O) _m or negative ions O ₂ ⁻ (H ₂ O) _n are changed. , Generate approximately equal amount.

  Moreover, the peak value of the high voltage generated in the secondary winding of each trigger coil (23, 24) can be adjusted through adjustment of the pulse width of the first pulse signal or the second pulse signal. That is, as the pulse width is increased, the peak value of the high voltage is increased. Conversely, as the pulse width is decreased, the peak value of the high voltage is decreased. On the other hand, the peak value of the high voltage can also be adjusted by adjusting the electromotive force in the DC power supply 30. Therefore, for example, by preventing the peak value of the high voltage from exceeding the rated value, it is possible to prevent the ion generating elements (21, 22) from being damaged.

  Furthermore, by adjusting the pulse interval of the pulse signal output from the arithmetic processing unit 27, the number of occurrences per unit time of the high voltage applied to the discharge electrode of each ion generating element (21, 22), that is, each The number of discharges per unit time of the ion generating elements (21, 22) can be adjusted separately.

  Here, a specific configuration of the first ion generating element 21 will be described with reference to FIG. As shown in FIG. 5, the shape of the first ion generating element 21 is basically preferably a needle shape. In this case, the needle tip may be the discharge electrode 212. The curvature of the needle tip is preferably as small as possible, and is preferably, for example, φ0.05 mm or less. By setting the curvature to φ0.05 mm or less, positive ions can be generated effectively.

  The first ion generating element 21 can be made of a metal material such as tungsten, stainless steel, or carbon steel. The first ion generating element 21 emits positrons from the tip of the needle (or takes in electrons) when a positive (plus) high voltage is applied. Thereby, charge transfer occurs in molecules such as water in the air, and positive ions can be generated.

  At this time, if the voltage applied to the first ion generating element 21 is 1500 V or higher, preferably 3000 V or higher, positrons can be effectively emitted. Further, the amount of positive ions generated from the first ion generation element 21 increases as the voltage applied to the first ion generation element 21 increases, and the number of discharges increases as the number of times of application increases. The amount of generation increases.

  The second ion generating element 22 is also the same as the first ion generating element 21, and emits negative electrons from the tip of the needle by applying a negative (minus) high voltage, such as water in the air. Charge transfer occurs in the molecule, and negative ions can be generated. At this time, if the voltage applied to the second ion generating element 22 is −1500 V or less, preferably −3000 V or less, negative electrons can be effectively emitted. Further, the negative ions generated from the second ion generating element 22 are more generated per unit time as the voltage applied to the second ion generating element 22 is higher, and the number of discharges is increased as the number of times of application increases. The amount of generation increases.

  Here, in the ion generator 1, for example, by changing the type of the ion generating elements (21, 22), the discharge start voltage of the discharge unit may vary. Even in this case, according to the ion generator of the present embodiment, the value of the output high voltage can be adjusted to exceed the current discharge start voltage (so that ions are generated). It has become. Therefore, even if the discharge start voltage fluctuates, it is not necessary to change the specifications of the high voltage generator.

  A mechanism for adjusting the value of such a high voltage will be described below with a specific example.

  First, the first ion generation element 21 is changed from the ion generation element A (discharge start voltage is ± 1.5 kV) shown in Table 1 to the same ion generation element B (discharge start voltage is ± 2.0 kV). The case to be performed (first case) will be described.

  The voltage applied to the trigger coil 23 from the DC power supply 30 (input voltage of the trigger coil 23) is 5V as shown in FIG. 6A, the pulse width of the first pulse signal is 1 shown in FIG. 6B. When 0.5 μsec is set as in the first pulse, the voltage generated in the secondary winding of the trigger coil 23 (the output voltage of the trigger coil 23) is the same as the first AC impulse shape in FIG. Like the high voltage, the peak value becomes ± 1.6 kV. This high voltage is positively biased by the diode 28, and a voltage having a peak voltage of +1.6 kV as shown on the left side of FIG. 7B is applied to the first ion generating element 21.

  For this reason, when the ion generating element A is used as the first ion generating element 21, the overvoltage exceeds the discharge start voltage, so that the first ion generating element 21 is discharged at a positive potential to generate positive ions. Can be generated. However, when the first ion generating element 21 is the ion generating element B, since the overvoltage does not exceed the discharge start voltage, the first ion generating element 21 is discharged at a positive potential to generate positive ions. I can't let you.

  Therefore, in this case, the voltage applied to the trigger coil 23 from the DC power supply 30 (the input voltage of the trigger coil 23) remains at 5 V as shown in FIG. 6A, and the pulse width of the first pulse signal is As in the second pulse shown in FIG. 6 (B), the pulse is enlarged to 1.0 μsec. As a result, the voltage generated in the secondary winding L2 of the trigger coil 23 (the output voltage of the trigger coil 23) has a peak value of ± like the second AC impulse high voltage shown in FIG. Increase to 2.1 kV.

  Therefore, a voltage having a peak voltage of approximately +2.1 kV as shown on the right side of FIG. 7B is applied to the first ion generating element 21. As a result, the first ion generating element 21 (ion generating element B) can be discharged at a positive potential to generate positive ions. Here, the amount of expansion of the pulse width is an example, and it is assumed that the voltage applied to the first ion generating element 21 is appropriately set so as to exceed the discharge start voltage.

  Note that the output voltage of the trigger coil 23 varies depending on the number of turns in the primary coil and the secondary coil of the trigger coil 23, the ON time of the MOSFET 25, and the like. That is, by adjusting the pulse width according to the component to be used, the voltage generated in the secondary winding L2 of the trigger coil 23 (output voltage of the trigger coil 23) can be arbitrarily controlled.

  In the first case, the case where the type of the first ion generating element 21 is changed has been described. However, the second ion generating element 22 can be similarly considered. That is, negative ions can be generated by appropriately setting the pulse width of the second pulse signal in accordance with the discharge start voltage in the second ion generating element 22.

  The pulse width of the first pulse signal and the pulse width of the second pulse signal can be set separately. Therefore, since the output voltages of the trigger coil 23 and the trigger coil 24 can be adjusted separately, even if the first ion generating element 21 and the second ion generating element 22 have different discharge start voltages, each is appropriate. It is possible to apply various voltages.

  Furthermore, the pulse interval of the first pulse signal and the pulse interval of the second pulse signal can be set separately. Therefore, since the output interval between the trigger coil 23 and the trigger coil 24 can be adjusted separately, the amount of positive ions generated by the first ion generating element 21 and the minus generated by the second ion generating element 22 are reduced. The amount of ions generated can be controlled separately.

  Next, the first ion generating element 21 is changed from the ion generating element A shown in Table 1 (discharge start voltage is ± 1.5 kV) to the same ion generator element B (discharge start voltage is ± 2.0 kV). Another case (second case) will be described.

  As shown on the left side of FIG. 8A, the voltage applied to the trigger coil 23 from the DC power supply 30 is 5 V, the pulse width of the first pulse signal is shown in FIG. 8B. When set to 0.5 μsec as in the pulse shown, the voltage generated in the secondary winding of the trigger coil 23 (the output voltage of the trigger coil 23) is the first AC impulse-like high voltage shown in FIG. Like voltage, the peak value is ± 1.6 kV. This high voltage is positively biased by the diode 28, and a voltage having a peak voltage of +1.6 kV as shown on the left side of FIG. 9B is applied to the first ion generating element 21.

  For this reason, when the ion generating element A is used as the first ion generating element 21, the overvoltage exceeds the discharge start voltage, so that the first ion generating element 21 is discharged at a positive potential to generate positive ions. Can be generated. However, when the first ion generating element 21 is the ion generating element B, since the overvoltage does not exceed the discharge start voltage, the first ion generating element 21 is discharged at a positive potential to generate positive ions. I can't.

  Therefore, in this case, the pulse width of the first pulse signal remains 0.5 μsec as shown in FIG. 8B, and the voltage applied from the DC power supply 30 to the trigger coil 23 (input voltage of the trigger coil 23). Is increased to 10 V as shown on the right side of FIG. As a result, the voltage generated in the secondary winding of the trigger coil 23 (the output voltage of the trigger coil 23) has a peak value of ± 2.P as shown in the second alternating impulse-like high voltage in FIG. Increase to 1 kV.

  Therefore, a voltage having a peak voltage of approximately +2.1 kV as shown on the right side of FIG. 9B is applied to the first ion generating element 21. As a result, the first ion generating element 21 (ion generating element B) can be discharged at a positive potential to generate positive ions. Here, the amount of increase in the output voltage in the DC power source 30 is an example, and it is assumed that the voltage applied to the first ion generating element 21 is appropriately set so as to exceed the discharge start voltage.

  Note that the output voltage of the trigger coil 23 varies depending on the number of turns in the primary coil and the secondary coil of the trigger coil 23, the ON time of the MOSFET 25, and the like. That is, by adjusting the output of the DC power supply 30 according to the component to be used, the voltage generated in the secondary winding L2 of the trigger coil 23 (output voltage of the trigger coil 23) can be arbitrarily controlled.

  In the second example, the case where the type of the first ion generating element 21 is changed has been described. However, the second ion generating element 22 can be similarly considered. That is, negative ions can be generated by appropriately setting the output voltage of the DC power supply 30 according to the discharge start voltage in the second ion generating element 22.

  Next, the first ion generation element 21 is changed from the ion generation element A shown in Table 1 (discharge start voltage is ± 1.5 kV) to the same ion generation element C (discharge start voltage is ± 3.0 kV). An example (third example) will be described.

  As shown on the left side of FIG. 10A, the voltage applied to the trigger coil 23 from the DC power supply 30 is 5 V, the pulse width of the first pulse signal is shown in FIG. 10B. When 0.5 μsec is set as in the first pulse shown, the voltage generated in the secondary winding of the trigger coil 23 (the output voltage of the trigger coil 23) is the first AC shown in FIG. Like an impulse-like high voltage, the peak value is ± 1.6 kV. This voltage is positively biased by the diode 28, and a voltage having a peak voltage of +1.6 kV as shown on the left side of FIG. 11B is applied to the first ion generating element 21.

  For this reason, when the ion generating element A is used as the first ion generating element 21, the overvoltage exceeds the discharge start voltage, so that the first ion generating element 21 is discharged at a positive potential to generate positive ions. Can be generated. However, when the first ion generating element 21 is the ion generating element C, since the overvoltage does not exceed the discharge start voltage, the first ion generating element 21 is discharged at a positive potential to generate positive ions. I can't.

  Therefore, the voltage applied to the trigger coil 23 from the DC power supply 30 (input voltage of the trigger coil 23) is increased to 10V as shown on the right side of FIG. 10A, and the pulse width of the first pulse signal is As in the second pulse shown in FIG. 10 (B), the pulse is enlarged to 1.0 μsec.

  In this way, the voltage generated in the secondary winding of the trigger coil 23 (the output voltage of the trigger coil 23) has a peak value of ± as in the second AC impulse high voltage in FIG. Increase to 3.1 kV. This output voltage is positively biased by the diode 28, and a voltage having a peak voltage of +3.1 kV as shown on the right side of FIG. 11B is applied to the first ion generating element 21.

  As a result, the first ion generating element 21 can be discharged at a positive potential to generate positive ions. Here, the amount of expansion of the pulse width is an example, and it is assumed that the voltage applied to the first ion generating element 21 is appropriately set so as to exceed the discharge start voltage.

  Note that the output voltage of the trigger coil 23 varies depending on the number of turns in the primary coil and the secondary coil of the trigger coil 23, the ON time of the MOSFET 25, and the like. That is, the voltage generated in the secondary winding L2 of the trigger coil 23 (the output voltage of the trigger coil 23) can be arbitrarily controlled by adjusting the pulse width and the output of the DC power supply 30 according to the components to be used. Can do.

  In the third example, the case where the type of the first ion generating element 21 is changed has been described. However, the second ion generating element 22 can be similarly considered. That is, negative ions can be generated by appropriately setting the pulse width of the second pulse signal and the output voltage of the DC power supply 30 in accordance with the discharge start voltage in the second ion generating element 22.

  As described above, in the ion generator 1, by adjusting the pulse width of each pulse signal and the output voltage of the DC power supply 30, a high voltage applied to the ion generating elements (21, 22). The value is adjusted.

  Moreover, in the ion generator 1, it is possible to adjust the amount of generated ions through adjustment of the pulse interval (period of pulse arrival) of the first pulse signal and the second pulse signal. For example, the pulse interval of the first pulse signal is changed from the interval between the first and second pulses (2 msec) shown in FIG. 12A to the interval between the second and third pulses (1 msec). As a result, the amount of ions generated by the first ion generating element 21 can be increased.

That is, by changing the pulse interval in this way, the generation period of the voltage (output voltage of the trigger coil 23) generated in the secondary winding L2 of the trigger coil 23 is the first shown in FIG. From the second AC impulse high voltage generation cycle (2 msec), the second and third AC impulse high voltage generation cycles (1 msec) are also obtained. Therefore, the frequency at which this high voltage is positively biased by the diode 28 (the voltage applied to the first ion generating element 21) exceeds the discharge start voltage V _BD of the first ion generating element 21 is also roughly shown in FIG. As shown in 12 (C), the period changes from a period of 2 msec to a period of 1 msec.

  That is, by changing the pulse interval in this way, the number of discharges in the discharge part of the first ion generating element 21 is doubled, and the amount of positive ions generated theoretically doubles. In the fourth example, the case where the generation amount of positive ions is adjusted has been described. However, the case where the generation amount of negative ions is adjusted can be considered similarly. That is, it is possible to adjust the amount of negative ions generated by the second ion generating element 22 by adjusting the pulse interval of the second pulse signal.

  Moreover, in the ion generator 1, as shown in FIG. 13, you may make it provide a counter electrode (41, 42). Here, the first counter electrode 41 is provided so as to face the first ion generating element 21 with outside air interposed therebetween. The second counter electrode 42 is provided so as to face the second second ion generating element 22 with outside air interposed therebetween. The first counter electrode 41 and the second counter electrode 42 are both connected to GND (grounded). In addition, as a shape of a counter electrode (41, 42), it is possible to adopt a cylindrical shape, a mesh shape, or the like.

  Thereby, positive ions generated in the first ion generating element 21 are released toward the counter electrode 41, and negative ions generated in the second ion generating element are discharged toward the counter electrode 42. That is, each ion is attracted to the counter electrode (41, 42) by Coulomb force, and an ion wind can be generated. As a result, each ion can be easily diffused in the air.

  Further, in the ion generator 1 shown in FIG. 13, as shown in FIG. 14, the trigger coil 23 may be replaced with a transformer 23T, and the trigger coil 24 may be replaced with a transformer 24T.

  Here, one end of the secondary winding of the transformer 23T is connected to the anode of the diode 28. The cathode of the diode 28 is connected to the first ion generating element 21. The other end of the secondary winding of the transformer 23T is connected to the first counter electrode 41. One end of the secondary winding of the transformer 24T is connected to the cathode of the diode 29. The anode of the diode 29 is connected to the second ion generating element 22. The other end of the secondary winding of the transformer 24T is connected to the second counter electrode 42.

  The high voltage boosted by the transformer 23T is positively biased by the diode 28 and applied to the first ion generating element 21. Then, corona discharge occurs between the needle tip of the first ion generating element 21 and the first counter electrode 41, the surrounding air is ionized, and positive ions are generated.

  At this time, the first counter electrode 41 has a negative potential, and positive ions are attracted to the first counter electrode 41 by the Coulomb force, and an ion wind is generated. In other words, the positive ions can be easily diffused in the air by being put on the ion wind.

  On the other hand, the high voltage boosted by the transformer 24T is negatively biased by the diode 29 and applied to the second ion generating element 22. Then, corona discharge occurs between the needle tip of the second ion generating element 22 and the second counter electrode 42 to generate negative ions.

  At this time, the second counter electrode 42 is at a positive potential, and negative ions are attracted to the second counter electrode 42 by the Coulomb force, and an ion wind is generated. In other words, the negative ions can be easily diffused in the air by being put on the ion wind.

  Thus, the 1st counter electrode 41 is arrange | positioned so that the 1st ion generating element 21 may be opposed on both sides of external air. The second counter electrode 42 is disposed so as to face the second ion generating element 22 with outside air interposed therebetween. The first counter electrode 41 and the first ion generating element 21 are electrically connected to each other to form a floating (not grounded) circuit. Similarly, the second counter electrode 42 and the second ion generating element 22 are electrically connected to each other to form another floating circuit.

  For this reason, the entire charge amount of each of these circuits, except for air discharge, is substantially preserved. It is easy to reverse the state. Therefore, it is easy to diffuse ions generated in the vicinity of each ion generating element (21, 22) toward the counter electrode (41, 42).

  In the ion generator 1 described above, a MOSFET is used as a switching element for intermittently supplying power from the DC power source to each booster (13, 14). Instead, a bipolar transistor is used. The same effect can be obtained.

  In the ion generator 1 described above, one AC impulse-like high voltage is generated corresponding to one pulse in the first pulse signal and the second pulse signal. A single AC impulse-like high voltage may be generated corresponding to this pulse.

  In the control unit 9 (the arithmetic processing unit 27), each pulse signal may be generated so that the pulse period of the first pulse signal and the pulse period of the second pulse signal do not overlap each other. In other words, during the period in which a pulse arrives in one pulse signal, no pulse may be generated in the other pulse signal. In this way, the generation timings of positive ions and negative ions are shifted from each other, and it is possible to avoid as much as possible that positive ions and negative ions are immediately combined.

  As described above, the ion generator 1 according to the present embodiment has a primary side coil and a secondary side coil, and boosts the voltage supplied to the primary side coil by mutual induction, so that the secondary side The at least two boosting units (first boosting unit 13 and second boosting unit 14) output from the coil, and the intermittent supply of DC power from the DC power source 20 to the first boosting unit 13, The first switching element 15 that is switched according to the state of the one pulse signal and the intermittent supply of DC power from the DC power source 20 to the second booster 14 are switched according to the state of the second pulse signal. 2 switching elements 16.

  Furthermore, the control part 9 which generates a 1st pulse signal and a 2nd pulse signal, and controls switching in the 1st switching element 15 and the 2nd switching element 16 is provided. And the control part 9 can adjust a pulse width and a pulse space | interval separately about each of a 1st pulse signal and a 2nd pulse signal.

  Therefore, according to the ion generator 1, the intermittent supply of DC power from the DC power source such as a battery to each booster (13, 14) is switched to cause mutual induction in each booster (13, 14). It is possible. For this reason, it is not necessary to use a commercial AC power source as a power source. As a result, a high breakdown voltage such as a switching element, a high breakdown voltage large capacity capacitor, or the like is not necessary, and it is easy to reduce the size of the product.

  Further, it is possible to control the voltage output from each booster (13, 14) through adjustment of the state of the first pulse signal or the second pulse signal. Therefore, while this output voltage is applied to the ion generating elements (21, 22), an excessive voltage is prevented from being applied to the ion generating elements (21, 22), and the ion generating elements (21, 22) are prevented. 22) etc. can be easily avoided.

  Further, since the pulse width and the pulse interval can be adjusted separately for each of the first pulse signal and the second pulse signal, the voltage output from the first booster 13 and the voltage output from the second booster 14 are set. Can be adjusted separately. Therefore, while the output voltage of the first booster 13 is used for generating positive ions and the output voltage of the second booster 14 is used for generating negative ions, the generation amount of positive ions and negative ions is adjusted separately. It is possible to do.

  The ion generator according to the present invention described above may be mounted on an electric device such as an air conditioner, a dehumidifier, a humidifier, an air cleaner, a refrigerator, a fan heater, a microwave oven, a washing dryer, a vacuum cleaner, or a sterilizer. . And it is good to equip such an electric equipment with the sending means (for example, ventilation fan) which sends out the ion which generate | occur | produced with the ion generator in the air.

  If it is such an electric device, in addition to the original function of the device, it suppresses its growth by inactivating mold and fungi in the air by the action of positive ions and negative ions released from the installed ion generator. The indoor environment can be brought into a desired atmosphere state.

  Although the embodiment of the present invention has been described above, the embodiment is not limited to this content, and various modifications can be made without departing from the gist of the invention.

  The present invention can be used in fields such as ion generators.

It is a schematic block diagram of the ion generator which concerns on embodiment of this invention. It is a block diagram of the ion generator which concerns on embodiment of this invention. It is explanatory drawing regarding the operation | movement content of the ion generator which concerns on embodiment of this invention. It is explanatory drawing regarding the operation | movement content of the ion generator which concerns on embodiment of this invention. It is explanatory drawing regarding the ion generating element which concerns on embodiment of this invention. It is explanatory drawing regarding the 1st example in embodiment of this invention. It is explanatory drawing regarding the 1st example in embodiment of this invention. It is explanatory drawing regarding the 2nd example in embodiment of this invention. It is explanatory drawing regarding the 2nd example in embodiment of this invention. It is explanatory drawing regarding the 3rd example in embodiment of this invention. It is explanatory drawing regarding the 3rd example in embodiment of this invention. It is explanatory drawing regarding the 4th example in embodiment of this invention. It is another block diagram of the ion generator which concerns on embodiment of this invention. It is another block diagram of the ion generator which concerns on embodiment of this invention. It is a graph which shows the voltage waveform of the discharge part in the conventional ion generator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ion generator 9 Control part 13 1st pressure | voltage rise part 14 2nd pressure | voltage rise part 15 1st switching element 16 2nd switching element 20, 30, 31 DC power supply 21 1st ion generating element (1st electrode)
22 Second ion generating element (second electrode)
23, 24 Trigger coil 23T, 24T Transformer 25, 26 MOSFET
27 arithmetic processing unit 27A timer 27B first pulse generator 27C second pulse generator 28, 29 diode 41, 42 counter electrode 200 high voltage generator (high voltage generator circuit)
211 Voltage application unit of ion generation element 212 Discharge unit of ion generation element

Claims (20)

At least two boosting units (“first”, which have a primary side coil and a secondary side coil, boost the voltage supplied to the primary side coil by mutual induction, and output from the secondary side coil. Booster ”and“ second booster ”),
A first switching unit that switches intermittently the supply of DC power from a DC power supply to the first booster unit according to a state of a predetermined first pulse signal;
A second switching unit that switches between intermittent supply of DC power from a DC power source to the second booster unit according to a state of a predetermined second pulse signal;
A high voltage generation circuit comprising: a control unit that generates the first pulse signal and the second pulse signal to control switching in the first switching unit and the second switching unit;
The controller is
A high voltage generation circuit, wherein a pulse width and a pulse interval can be adjusted separately for each of the first pulse signal and the second pulse signal.   The high voltage generation circuit according to claim 1, wherein the first booster and the second booster are provided with a transformer or a trigger coil. A first rectifying element that positively biases the output voltage of the first booster;
3. The high voltage generation circuit according to claim 1, further comprising: a second rectifying element that biases the output voltage of the second booster negatively. 4. The first rectifying element is a diode having an anode connected to the first booster;
4. The high voltage generation circuit according to claim 3, wherein the second rectifier element is a diode having a cathode connected to the second booster side. 5.   5. The high voltage generation circuit according to claim 1, wherein each of the first switching element and the second switching element includes a MOSFET or a bipolar transistor. The controller is
It is a microcomputer that controls the generation of the first pulse signal and the second pulse signal by software, or a dedicated LSI that controls the generation of the first pulse signal and the second pulse signal by hardware. The high voltage generation circuit according to claim 1. The first booster outputs an AC impulse voltage in response to the arrival of the pulse of the first pulse signal,
2. The high voltage generation circuit according to claim 1, wherein the second booster outputs an AC impulse voltage in response to arrival of a pulse of the second pulse signal. 3.   2. The high voltage generation circuit according to claim 1, wherein the value of the voltage output from the first booster and the second booster varies according to the value of the DC voltage supplied from the DC power supply. . At least two boosting units (“first”, which have a primary side coil and a secondary side coil, boost the voltage supplied to the primary side coil by mutual induction, and output from the secondary side coil. Booster ”and“ second booster ”),
A first switching unit that switches intermittently the supply of direct-current power to the primary coil related to the first boosting unit according to a predetermined first signal;
A second switching unit that switches intermittently the supply of direct-current power to the primary side coil related to the second boosting unit according to a predetermined second signal;
A high voltage generation circuit comprising: a control unit that generates the first signal and the second signal and controls switching in the first switching unit and the second switching unit;
The controller is
A high voltage generation circuit, wherein each of the first signal and the second signal is generated independently of each other. A high voltage generation circuit according to any one of claims 1 to 9,
A first electrode for generating ions by applying an output voltage of the first booster;
An ion generator, comprising: a second electrode that generates ions by applying an output voltage of the second booster. The first electrode generates positive ions when a positive voltage is applied;
The second electrode generates negative ions when a negative voltage is applied;
The amount of positive ions generated varies according to the pulse interval of the first pulse signal,
The ion generation apparatus according to claim 10, wherein the generation amount of the negative ions varies according to a pulse interval of the second pulse signal. The voltage applied to the first electrode varies according to the pulse width of the first pulse signal,
The ion generator according to claim 10 or 11, wherein the voltage applied to the second electrode varies according to a pulse width of the second pulse signal. The first electrode or the second electrode has a needle shape,
The ion generator according to any one of claims 10 to 12, wherein ions are generated by performing an air discharge from the needle tip. A counter electrode that is grounded and arranged to face the first electrode or the second electrode with outside air interposed therebetween;
The ion generator according to any one of claims 10 to 13, wherein the positive ions or the negative ions are diffused toward the counter electrode. A counter electrode arranged to face the first electrode or the second electrode across the outside air,
The counter electrode and the first electrode or the second electrode are electrically connected to each other to form a circuit, and the circuit is in a floating state. The ion generator in any one of.   The ion generator according to claim 14 or 15, wherein the counter electrode has a cylindrical shape.   The ion generator according to claim 14 or 15, wherein the counter electrode has a mesh shape. The positive ion is H ⁺ (H ₂ O) _m (where m is a natural number),
The negative _{^{ions, O 2 - (H 2 O}} ) n ( where, n is a natural number) the ion generating device according to claim 17 claim 10, characterized in that a.   An electrical apparatus comprising the ion generator according to any one of claims 10 to 18. The controller is
2. The first pulse signal and the second pulse signal are generated so that a pulse period in the first pulse signal and a pulse period in the second pulse signal do not overlap each other. High voltage generation circuit.

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