JP4195622B2 - Power supply circuit for ion generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power supply circuit used in an ion generator that generates ions from a pair of electrodes to which a high voltage is applied.
[0002]
[Prior art]
When a pair of electrodes are opposed to each other and a high voltage is applied between the electrodes, a corona discharge is generated between the electrodes. When this corona discharge is generated, oxygen molecules in the air are ionized, and positive ions such as ozone and negative ions are generated.
[0003]
Negative ions have the effect of removing tension and relaxing, and ozone has the effect of neutralizing off-flavor substances and bacteria in the air because it has strong oxidizing properties. Further, it is known that when the same amount of negative ions and positive ions are generated, both ions become a mass in the air and form an ion cluster. When this ion cluster is formed, it has become clear that both ions surround and confine bacteria and fine dust within the ion cluster.
[0004]
A conventional circuit that generates negative ions continuously supplies high-voltage power to electrodes, and can continuously generate a large amount of negative ions (for example, see Patent Document 1). Note that positive ions are generated when the polarity of the voltage applied to the electrodes is reversed.
[0005]
On the other hand, in order to generate an ion cluster, it is necessary to make the generation amount of negative ions and the generation amount of positive ions the same. Therefore, it is known that a negative ion and a positive ion are alternately generated by resonating with the capacitance of the electrode and the leakage inductance of the secondary coil, and both generation amounts are equal (for example, Patent Document 2). reference).
[0006]
[Patent Document 1]
Japanese Patent Laying-Open No. 2003-28435 (FIG. 4)
[0007]
[Patent Document 2]
JP 2003-7427 A (FIGS. 1 and 2)
[0008]
[Problems to be solved by the invention]
Since the circuit described in Patent Document 2 discharges by resonance on the secondary side, compared to the circuit in which high-voltage power is forcibly generated on the secondary side as in the circuit described in Patent Document 1, the discharge is performed. Therefore, very little energy can be supplied to the electrode. Therefore, the amount of ions that can be generated using the circuit described in Patent Document 2 is extremely smaller than the amount of ions generated by other circuits as described in Patent Document 1.
[0009]
It is also conceivable to generate negative ions and positive ions by using two circuits described in Patent Document 1. With this configuration, both negative ions and positive ions can be generated in a large amount, but it is difficult to control the generation amounts of negative ions and positive ions to be the same.
[0010]
In view of the above problems, an object of the present invention is to provide a power supply circuit for an ion generator that can generate a large amount of the same amount of negative ions and positive ions.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a power supply circuit for an ion generator according to the present invention is a power supply circuit for generating a high voltage to be applied between a pair of electrodes built in an ion generator and corresponding to each other. In the case of having a step-up transformer having a primary coil connected to form an oscillation circuit and a secondary coil connected to the pair of electrodes, two secondary coils having different polarities that operate synchronously are provided. A step-up transformer having two secondary coils having a common magnetic path is provided to generate positive ions and negative ions from electrodes connected to each of the secondary coils. characterized in that it had.
[0012]
An electrode for generating negative ions and an electrode for generating positive ions are connected to each of the two secondary coils, and negative ions and positive ions are separately generated from both electrodes. Both can be generated in large quantities. In addition, since both secondary coils operate | move synchronously, the generation amount of a negative ion and the generation amount of a positive ion can mutually be made the same.
[0014]
It is use a step-up transformer having two secondary coils of the magnetic path common.
[0015]
In addition, if a switch means for intermittently generating positive ions is provided, ion clusters and negative ions can be generated alternately, and a sterilization effect and a relaxation effect can be obtained simultaneously.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, reference numeral 1 denotes a step-up transformer, which includes two primary coils 3 and 4 that share a magnetic path with a primary coil 11. The secondary coils 3 and 4 are wound so that their polarities are opposite to each other, and positive ions are generated from the electrode connected between the terminal 12 and the terminal 31, and between the terminal 12 and the terminal 41. The negative electrode is generated from the electrode connected to. Reference numeral 2 denotes an AC power source that supplies AC power to the primary coil 11 via the switch 21.
[0017]
Referring also to FIG. 2, in the present embodiment, an intermediate tap is provided on the primary coil 11, and the switch 11 can short-circuit the half 11 a of the primary coil 11. When generating the same amount of positive ions and negative ions, the switch 32 is turned off. Then, the same voltage is applied to the half 11 a and the other half 11 b of the primary coil 11, and electromotive forces of the same magnitude are generated in the secondary coils 3 and 4.
[0018]
Next, when the switch 32 is turned on and the half 11a is short-circuited, all the power from the power source 2 is supplied to the half 11b. Therefore, a high voltage is generated in the secondary coil 4, but almost no electromotive force is generated in the secondary coil 3. As shown in FIG. 2, since the interval is provided between the secondary coil 3 and the secondary coil 4, the coupling between the two is weak and no large electromotive force is generated in the secondary coil 3.
[0019]
In order to generate corona discharge between the gaps of the electrodes connected between the terminals 31 and 12, electric power of a predetermined voltage or more must be supplied. However, when the switch 32 is turned on, no power higher than the predetermined voltage is generated in the secondary coil 3, so that no ions are generated from the electrode connected between the terminals 31 and 12. Since the electrode that does not generate ions is set for positive ions, only negative ions can be generated by turning on the switch 32. Reference numeral 10 denotes a ferrite core.
[0020]
Referring to FIG. 3, P is a waveform of high voltage power supplied to terminal 31, and N is a waveform of high voltage power supplied to terminal 41. Since the secondary coils 3 and 4 share one primary coil 11, the high voltage power supplied to both terminals 31 and 41 is completely synchronized with no phase shift. Therefore, the same amount of positive ions and negative ions are generated from the electrodes connected to both terminals 31 and 41.
[0021]
When the switch 32 is turned off, the generation of positive ions is stopped and only negative ions are generated. The switch 32 may be continuously turned off to generate only negative ions, but the switch 32 may be intermittently turned on and off to simultaneously generate ion clusters and negative ions.
[0022]
Next, referring to FIG. 4, in the embodiment shown in this figure, two circuits using a step-up transformer 5 having one primary coil 51 and one secondary coil 52 are combined into one AC power source. 2 connected in parallel. An electrode for generating positive ions is connected between the terminal 6 and the terminal 12, and an electrode for generating negative ions is connected between the terminal 7 and the terminal 12.
[0023]
In the circuit configuration according to the present embodiment, as shown in FIG. 5, the waveforms are the same when inverted, but the phase is shifted by 180 degrees. However, since the amount of positive ions generated is the same as the amount of negative ions generated, there is no problem in generating ion clusters. Alternatively, the switch 21 may be turned off to generate only negative ions. Alternatively, as shown in FIG. 6, the switch 5 may be intermittently turned on and off to generate ion clusters and negative ions simultaneously. Good. Furthermore, the switch 21 may be turned on and the switch 22 may be turned off to generate only positive ions.
[0024]
【The invention's effect】
As is clear from the above explanation, the present invention can generate a large amount of positive ions and negative ions in the same amount and in a large amount, so that a large amount of ion clusters can be generated.
[Brief description of the drawings]
FIG. 1 is a circuit diagram according to a first embodiment. FIG. 2 is a diagram illustrating a structure of a step-up transformer. FIG. 3 is a diagram illustrating an output waveform of the circuit of FIG. FIG. 5 is a diagram showing an output waveform of the circuit of FIG. 3. FIG. 6 is a diagram showing an output waveform when the plus side is intermittently operated.
1 Booster Transformer 2 AC Power Supply 3 Secondary Coil 4 Secondary Coil 5 Booster Coil 11 Primary Coil 51 Primary Coil 52 Secondary Coil

Claims (2)

A power supply circuit for generating a high voltage to be applied between a pair of electrodes corresponding to each other built in an ion generator, wherein a capacitor is connected to a primary coil forming an oscillation circuit and connected to the pair of electrodes And having a step-up transformer provided with a secondary coil, two secondary coils having different polarities that operate synchronously are provided, and positive ions and negative ions are connected to electrodes connected to each of the secondary coils. A power supply circuit for an ion generator , wherein a step-up transformer having two secondary coils that share a magnetic path is used . 2. The ion generator power supply circuit according to claim 1, further comprising switch means for intermittently generating positive ions.

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