JP2002110312A - Ion generating device and power adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion generating device capable of controlling ion emission volume and a power adapter for the ion generating device. SOLUTION: Ion emission volume is controlled by detecting current flowing through emission resistance of electric charge connected between primary and secondary sides of a power circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved ion generator for generating positive or negative ions by corona discharge and to a power adapter for the ion generator.

[0002]

2. Description of the Related Art Conventionally, an ion generator as shown in FIG. 7 has been known. In this device, a DC voltage 4 is generated from a commercial power supply 1 by a switching power supply 2 and used as a power supply for an oscillation circuit 5. The primary side and the secondary side of the switching power supply 2 are electrically insulated. A pulse voltage is applied to the step-up transformer 6 from the oscillation circuit 5. The applied pulse voltage is stepped up by the step-up transformer 6 to generate a high-voltage pulse, which is converted to a negative DC high voltage by the rectifying and smoothing circuit 7 and applied to the discharge electrode 8. A corona discharge occurs, in which case negative ions are generated and released.

When negative ions are emitted from the discharge electrode 8, the amount of charge is the same as that of the negative ions, and positive charges remain on the secondary side of the switching power supply 2 and gradually become positively charged. Is reduced, the electric field near the discharge electrode 8 is weakened, and the amount of ion emission is reduced.

In order to prevent the secondary power of the switching power supply 2 from being positively charged, for example, Japanese Unexamined Patent Publication No. Hei 10-199655 discloses a circuit for discharging electric charges, in which a primary side and a secondary side are connected to a resistor 9.
There was a way to connect.

In Japanese Patent Application Laid-Open No. Hei 10-199655, as shown in FIG. 8, a means for connecting a capacitor 18 and a neon lamp 24 to a discharge circuit, blinking the neon lamp 24, and displaying the state of generation of negative ions. It is shown. The positive charge generated by the release of the negative ions is charged in the capacitor 18, and the charged voltage of the capacitor 18 is changed to the neon lamp 2.
When the discharge voltage reaches 4, the neon lamp 24 discharges and emits light. In this way, the capacitor 18 is charged with a positive charge,
The neon lamp 24 is turned on and off by repeating the discharge with the neon lamp 24.

[Problems to be solved by the invention]

However, Japanese Patent Application Laid-Open No. 10-199655
As described above, it is not possible to stabilize the ion emission amount or adjust the ion emission amount depending on the surrounding environment only by providing the charge discharging circuit.

[0007] In addition, there is a problem that the neon lamp has a dark brightness and is hard to see because the neon lamp has a dark brightness using a neon lamp for the charge discharging circuit.

An object of the present invention is to provide an ion generator capable of adjusting and stabilizing an ion emission amount and a power adapter for the ion generator. Another object of the present invention is to provide a display means of the ion generation amount which is easy to realize and easy to see.

[0009]

In order to solve the above-mentioned problems, according to the present invention, the amount of charge of ions released per unit time and the amount of charge connected between the primary side and the secondary side of the power supply unit are determined. Utilizing the fact that the current flowing through the discharging resistor is proportional, the current flowing through this resistor is detected and fed back to the control means to control the amount of ions released.

According to a second aspect of the present invention, the current flowing through the resistor connecting the primary side and the secondary side of the power supply unit and the resistance value cause the potential on the secondary side to rise or fall with respect to the primary side. The absolute value of the potential of the discharge electrode with respect to the surrounding ground potential is reduced, and the amount of ion emission is limited. Therefore, the present invention is to adjust the amount of ion emission by changing the resistance value of the resistor connecting the primary side and the secondary side of the power supply unit and changing the potential of the secondary side.

According to a third aspect of the present invention, the whole or a part of the current flowing through the resistor connecting the primary side and the secondary side of the power supply section is charged to the capacitor, and the charge charged in the capacitor is discharged by the trigger means. It is an invention of extracting a pulse signal having a period corresponding to the ion emission amount.

A fourth aspect of the present invention is to output a signal insulated from an ion generator corresponding to the amount of emitted ions by applying the pulse signal to a photocoupler.

According to a fifth aspect of the present invention, the pulse signal is applied to the light emitting means so that the light emitting means blinks in a cycle corresponding to the ion emission amount.

[0014] Claims 6 and 7 relate to the primary side and the secondary side of the power supply section.
The present invention is to adjust the amount of ions to be emitted with respect to the temperature by forming all or a part of the resistor connected to the secondary side with a resistance element having a positive or negative temperature coefficient.

An eighth aspect of the present invention is an invention of a means for controlling the amount of emitted ions when the power supply section is constituted by a switching power supply.

A ninth aspect of the present invention is an invention of a means for controlling an ion emission amount when the power supply section is constituted by a power transformer of a commercial frequency.

A tenth aspect of the present invention is an invention of a means for controlling the amount of ion emission when the high voltage generating section is constituted by a piezoelectric transformer.

The eleventh aspect is an invention of a power supply adapter for an ion generator in which the primary side and the secondary side are connected by a resistor to prevent the secondary side from being charged.

A twelfth aspect of the present invention is an invention in the case where a commercial frequency power transformer is used as a means for realizing the power adapter.

According to a thirteenth aspect of the present invention, a switching power supply is used as a means for realizing the power adapter. Hereinafter, the contents of the present invention will be described in detail with reference to Examples in order to facilitate understanding.

[0021]

FIG. 1 shows an embodiment of the present invention. FIG.
Is an example applied to a negative ion generator. In this negative ion generator, a switching power supply 2 generates a DC voltage 4 from a commercial power supply 1 on the secondary side of a switching transformer 3, and further generates a high voltage with an oscillation circuit 5 and a step-up transformer 6, and a rectifying / smoothing circuit 7. A high DC voltage is applied to the discharge electrode 8 via the power supply to generate and release negative ions.

A resistor 8 and a resistor 9 are connected between the primary and secondary sides of the switching transformer 3 so as to discharge positive charges accumulated on the secondary side with the release of negative ions. The resistor 9 feeds back the current flowing due to the discharge of the positive charges as a voltage to the control circuit of the switching power supply 2 to control the DC voltage 4 on the secondary side of the switching power supply 2. The control circuit is configured to lower the DC voltage 4 as the voltage fed back increases. The output voltage of the oscillation circuit 5 used here is configured to be proportional to the DC voltage 4.

The high DC voltage applied to the discharge electrode 8 is proportional to the DC voltage 4. However, as the amount of negative ions released increases, the current flowing through the resistor 9 increases, and the voltage fed back to the control circuit increases. Become. At this time, since the DC voltage 4 is controlled so as to be lower, the voltage applied to the discharge electrode 8 is reduced so that the increased amount of the released negative ions is controlled so as to stabilize the amount of the released negative ions. It becomes possible.

FIG. 2 shows an example of application to a negative ion generator as in FIG. This negative ion generator generates a DC voltage 4 from a commercial power supply 1 to a secondary side of a switching transformer 3 by a switching power supply 2, and further generates a high voltage by an oscillation circuit 5 and a step-up transformer 6.
A high DC voltage is applied to the discharge electrode 8 via the rectifying and smoothing circuit 7 to generate and release negative ions.

Between the primary and secondary sides of the switching transformer 3, the resistors 11 and 12 are connected so that they can be switched by a switch 13. The discharge of the positive charges accumulated on the secondary side with the release of the negative ions is performed through either the resistor 11 or the resistor 12. If the resistance 11 is set to a resistance value larger than the resistance 12, the voltage generated at both ends of the resistance due to the current due to the discharge of the positive charges is larger in the case of the resistance 12 than in the case of the resistance 11.

The fact that the voltage at both ends of the resistor is large means that the potential on the secondary side rises with respect to the surrounding ground potential, so that the magnitude of the negative potential of the discharge electrode 8 becomes small. The amount of negative ions released is reduced. That is,
The amount of negative ions emitted when the resistor 12 is selected by the switch 13 is lower than that when the resistor 11 is selected, and the amount of the negative ions emitted can be switched by the switch.

FIG. 3 also shows an example in which the present invention is applied to a negative ion generator. In this negative ion generator, a DC voltage 4 is supplied from a commercial power supply 1 to a secondary side through a rectifying / smoothing circuit 15 by a commercial power supply transformer 14. Then, a high voltage is generated by the oscillation circuit 5 and the step-up transformer 6, and a high DC voltage is applied to the discharge electrode 8 via the rectifying and smoothing circuit 7 to generate and release negative ions.

Between the primary and secondary sides of the power transformer 14, a resistor 16 and a capacitor 18 are connected in series with the resistor 16,
Further, a resistor 17, a trigger element 19, and a photocoupler 20 are connected in series with the capacitor 18.

The positive charges accumulated with the release of negative ions are charged in the capacitor 18 through the resistor 16, and the voltage of the capacitor 18 rises. When the voltage of the capacitor 18 reaches the breakover voltage of the trigger element 19, the trigger element 19 turns on, and the charge stored in the capacitor 18 is passed through the resistor 17 to the photocoupler 20.
And the photocoupler 20 outputs an ON signal.

When the discharge of the charge stored in the capacitor 18 is completed, the trigger element 19 is turned off, the photocoupler 20 is turned off, and the capacitor 18 starts charging again. By repeating this, the photocoupler 2
0 outputs an on / off signal.

At this time, since the ON / OFF cycle of the photocoupler 20 becomes shorter as the emission amount of the negative ions increases, the signal output insulated from the ion generator of the cycle corresponding to the increase or decrease of the emission amount of the negative ions is obtained. Obtainable.

FIG. 4 shows an example in which a light emitting diode 21 is used instead of the photocoupler 20 in the ion generator of FIG. The operation principle is almost the same as that of FIG. 3, but instead of obtaining the ON / OFF signal output of the photocoupler 20, the light emitting diode 21 is made to blink, and the magnitude of the negative ion emission amount is displayed in the blinking state. It is something to do. In this case, the shorter the blinking cycle, the greater the amount of negative ion emission. The light of the light emitting diode is
Compared to a discharge lamp such as a neon lamp, the lamp is brighter, is easier to see, and has various emission colors, and is more suitable for display.

FIG. 5 is also an example applied to a negative ion generator. This negative ion generator generates a DC voltage 4 from a commercial power supply 1 to a secondary side of a switching transformer 3 by a switching power supply 2, and further generates an oscillation circuit 5.
Then, a high voltage is generated by the piezoelectric transformer 22 and a high DC voltage is applied to the discharge electrode 8 via the rectifying and smoothing circuit 7 to generate and release negative ions.

A resistor 9 and a negative temperature coefficient thermistor 23 are connected in series between the primary and secondary sides of the switching transformer 3. The discharge of the positive charges accumulated on the secondary side with the release of the negative ions is performed through the resistor 9 and the negative characteristic thermistor 23. When the temperature rises, the resistance value of the negative characteristic thermistor 23 decreases, so that the secondary potential generated at the time of discharging positive charges decreases as the temperature rises, and the amount of negative ions released increases.

The piezoelectric transformer 22 is used to reduce the size of the ion generator. Generally, the output voltage of the piezoelectric transformer 22 tends to decrease as the temperature increases, and the amount of negative ions emitted also decreases. In this case, the negative-characteristic thermistor 23 suppresses the increase in the secondary-side potential due to the discharge of the positive charges, so that the decrease in the amount of negative ions released due to the temperature increase can be suppressed.

FIG. 6 shows an example in which the portion of the ion generator of FIG. 4 up to the point where the DC voltage 4 is generated is extracted and used as a power adapter for the ion generator. In this case, the power supply adapter that supplies power to the ion generator has the function of discharging positive ions and the function of displaying the state of discharging negative ions, thereby simplifying the configuration of the ion generator.

[0037]

As described above, the present invention has the following effects. Controlling the power supply by detecting, as the current flowing through the discharge resistor, the amount of charge having a polarity opposite to that of the discharged ions discharged from the secondary side to the primary side of the power supply circuit as the ions are discharged from the discharge electrode. By feeding back to the circuit, stabilization of the ion emission amount for various conditions,
Alternatively, an ion generator capable of performing various controls can be provided.

Further, according to the present invention, it is possible to realize a display means in which the amount of emitted ions is easy to see.

Further, according to the present invention, it is possible to suppress a decrease in the amount of ion emission due to the charging of the secondary side of the power adapter, which is conventionally seen in the ion generator using the power adapter. Also becomes simple. Further, a failure due to insulation deterioration caused by charging of the secondary side of the power adapter can be eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an ion generator according to an embodiment of the present invention, in which a positive discharge charge amount is detected and a negative ion emission amount is stabilized.

FIG. 2 is a configuration diagram of an ion generating apparatus that switches the magnitude of a negative ion emission amount by switching a positive charge discharge resistance according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of an ion generator that outputs an insulated signal corresponding to the amount of negative ions emitted according to an embodiment of the present invention.

FIG. 4 is a configuration diagram of an ion generator that flashes according to the amount of released negative ions according to an embodiment of the present invention;

FIG. 5 is a configuration diagram of an ion generator that corrects temperature characteristics of a piezoelectric transformer according to an embodiment of the present invention.

FIG. 6 is a configuration diagram of a power supply adapter for an ion generator that flashes according to the amount of negative ions emitted according to an embodiment of the present invention.

FIG. 7 is a configuration diagram showing an embodiment of a conventional ion generator.

FIG. 8 is a configuration diagram showing an embodiment of a conventional ion generator that blinks in accordance with the amount of negative ions emitted.

FIG. 9 is a configuration diagram showing an embodiment of a conventional power adapter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Commercial power supply, 2 ... Switching power supply, 3 ... Switching transformer 4 ... DC voltage, 5 ... Oscillation circuit, 6 ... Boosting transformer 7 ... Rectification smoothing circuit, 8 ... Discharge electrode, 9, 10 ... Resistance 11, 12 ... Resistance, DESCRIPTION OF SYMBOLS 13 ... Switch, 14 ... Power transformer 15 ... Rectifier smoothing circuit, 16/17 ... Resistor, 18 ... Capacitor 19 ... Trigger element, 20 ... Photocoupler, 21 ... Light emitting diode 22 ... Piezoelectric transformer, 23 ... Negative thermistor, 2
4: Neon lamp

Claims (13)

[Claims] 1. An ion generator comprising a power supply unit having a primary side and a secondary side connected by a resistor and a high voltage generation unit and a discharge electrode provided on the secondary side, wherein the primary side of the power supply unit is An ion generator characterized by detecting a current flowing through a resistor connected to a secondary side and controlling an amount of ions emitted from a discharge electrode. 2. The ion generator according to claim 1, wherein the amount of emitted ions is controlled by changing a resistance value of a resistor connecting a primary side and a secondary side of the power supply unit. An ion generator characterized by the above-mentioned. 3. The ion generator according to claim 1, further comprising: a resistor connecting a primary side and a secondary side of the power supply unit, a capacitor, and a trigger unit, for responding to an increase / decrease of an ion emission amount. An ion generator characterized in that it can output a pulse signal. 4. The ion generator according to claim 3, further comprising a resistor connecting a primary side and a secondary side of said power supply unit, a capacitor, a trigger means, and a photocoupler, and increasing or decreasing the amount of ion emission. An ion generator which is capable of outputting an electrically insulated pulse signal corresponding to the above. 5. The ion generator according to claim 1, further comprising a resistor connecting a primary side and a secondary side of the power supply unit, a capacitor, a trigger unit, and a light emitting unit.
An ion generator characterized in that a light-emitting means blinks in response to an increase or decrease in the amount of ion emission. 6. The ion generator according to claim 1, wherein all or a part of a resistor connecting a primary side and a secondary side of the power supply unit is formed of a resistance element having a positive or negative temperature coefficient. An ion generator characterized in that: 7. The ion generator according to claim 1, having a positive or negative temperature coefficient in parallel with a resistor connecting a primary side and a secondary side of the power supply unit or in parallel with a part of the resistor. An ion generator to which a resistance element is added. 8. The ion generator according to claim 1, wherein said power supply unit is constituted by a switching power supply, and a current flowing through a resistor connecting a primary side and a secondary side is detected to detect a current flowing through a secondary side of the switching power supply. An ion generator characterized in that the amount of emitted ions is controlled by controlling a power supply voltage. 9. The ion generator according to claim 1, wherein said power supply unit comprises a commercial frequency power supply transformer. 10. The ion generator according to claim 1, wherein said high-voltage generator is constituted by a piezoelectric transformer. 11. A power supply adapter for an ion generator according to claim 1, wherein the primary side and the secondary side are connected by a connected resistor, and an ion generator using the same. apparatus. 12. The ion generator according to claim 1, wherein said power adapter comprises a power transformer of a commercial frequency, and an ion generator using said power adapter. 13. An ion generator according to claim 1, wherein said power adapter is constituted by a switching power supply, and an ion generator using said power adapter.