JP5808568B2 - Ion generator and ion generation method - Google Patents

Description

  The present invention relates to an ion generator and an ion generation method, and more particularly to an ion generator and an ion generation method for generating positive ions and negative ions.

  As a conventional ion generator, a positive voltage is applied to a positive electrode to generate positive ions, and a negative voltage is applied to a negative electrode to generate negative ions. The positive ions and negative ions in the air There are those that remove airborne bacteria, fungi, viruses, etc.

  Also, there is an ion generator that increases the generation efficiency of positive ions and negative ions by arranging positive electrodes and negative electrodes in the air passage of the blower to alternately generate positive ions and negative ions (for example, patents) Reference 1).

  There is also an ion generation device that enables ion emission in a windless environment by generating ion wind due to a potential difference between the needle electrode and the counter electrode and sending the generated ions to the outside (see, for example, Patent Document 2). ).

JP 2005-243288 A Japanese Patent No. 4551977

  However, since the ion generator of Patent Document 1 includes a blower and an air passage, there is a problem that power consumption and device dimensions increase.

  Further, in the ion generator of Patent Document 2, when both positive ions and negative ions are generated, the positive ions and the negative ions are recombined, and it is difficult to supply ions far (positions separated by 1 m or more). There's a problem. Further, since the diffusion rates of positive ions and negative ions are different, the balance between the positive ion concentration and the negative ion concentration is also deteriorated.

  Therefore, a main object of the present invention is to provide an ion generation apparatus and an ion generation method capable of generating positive ions and negative ions with high efficiency and well-balanced and supplying ions far away.

An ion generator according to the present invention includes a positive electrode that generates positive ions when a positive voltage is applied, a negative electrode that generates negative ions when a negative voltage is applied, and a positive voltage applied to the positive electrode. It has a first mode to be applied and a second mode to apply a negative voltage to the negative electrode, and a voltage application control unit that alternately performs the first and second modes. The first time for performing the first mode is set shorter than the second time for performing the second mode. The voltage application control unit further includes a short cycle mode for switching the first and second modes at a first cycle, and a long cycle for switching the first and second modes at a second cycle longer than the first cycle. Mode, and the short cycle mode and the long cycle mode are alternately performed.

  Preferably, the voltage application control unit further includes a third mode in which a positive voltage is applied to the positive electrode and a negative voltage is applied to the negative electrode, and between the first and second modes and between the second and second modes. The third mode is performed in at least one of the first modes.

  Preferably, the voltage application control unit continuously changes the positive voltage within the first time and continuously changes the negative voltage within the second time.

In addition, an ion generation method according to the present invention includes a positive electrode that generates positive ions when a positive voltage is applied, and a negative electrode that generates negative ions when a negative voltage is applied. In which a first mode in which a positive voltage is applied to a positive electrode and a second mode in which a negative voltage is applied to a negative electrode are alternately performed to perform the first mode. 1 time is shorter than the second time for performing the second mode, and the short period mode for switching the first and second modes at the first period, and the first and second modes for the first time And a long cycle mode in which switching is performed in a second cycle longer than the first cycle .

  Further preferably, a positive voltage is applied to the positive electrode and a negative voltage is applied to the negative electrode between at least one of the first and second modes and between the second and first modes. The third mode is performed.

  Preferably, the positive voltage is continuously changed within the first time, and the negative voltage is continuously changed within the second time.

  In the ion generating apparatus and the ion generating method according to the present invention, the first mode for generating positive ions by applying a positive voltage to the positive electrode, and the first mode for generating negative ions by applying a negative voltage to the negative electrode. The second mode is alternately performed so that the first time for performing the first mode is shorter than the second time for performing the second mode. Therefore, since the diffusion rate of positive ions is faster than the diffusion rate of negative ions, positive ions and negative ions can be distributed uniformly. Therefore, positive ions and negative ions can be generated with high efficiency and good balance, and ions can be supplied far away.

It is a block diagram which shows the structure of the ion generator by Embodiment 1 of this invention. It is a time chart which shows operation | movement of the voltage application control part shown in FIG. It is a time chart which shows operation | movement of the voltage application control part of the ion generator by Embodiment 2 of this invention. It is the A section enlarged view of FIG. It is a time chart which shows operation | movement of the voltage application control part of the ion generator by Embodiment 3 of this invention. It is a time chart which shows operation | movement of the voltage application control part of the ion generator by Embodiment 4 of this invention. It is a time chart which shows operation | movement of the voltage application control part of the ion generator by Embodiment 5 of this invention.

[Embodiment 1]
As shown in FIG. 1, the ion generator according to Embodiment 1 of the present invention includes a high voltage generator 1, a voltage application controller 2, a positive electrode 3, and a negative electrode 4. The high voltage generator 1 generates positive and negative high voltages Va and Vb for generating ions.

  As shown in FIG. 2, the voltage application control unit 2 is generated by the first mode in which the positive high voltage Va generated by the high voltage generation unit 1 is applied to the positive electrode 3 and the high voltage generation unit 1. And a second mode in which the negative high voltage Vb is applied to the negative electrode 4 and the first and second modes are alternately performed. The time Ta for performing the first mode is set shorter than the time Tb for performing the second mode (Ta <Tb).

  The positive electrode 3 is configured to generate positive ions by corona discharge when a positive high voltage Va is applied. The negative electrode 4 is configured to generate negative ions by corona discharge when a negative high voltage Vb is applied.

  Here, the reason and effect of performing the first and second modes alternately and setting Ta <Tb will be described. Under a windless environment, the time Ta for energizing the positive electrode 3 is equal to the time for generating and diffusing positive ions, and the time Tb for energizing the negative electrode 4 is equal to the time for generating and diffusing negative ions. When positive ions and negative ions are generated at the same time, positive ions and negative ions are recombined, and the amount of generated ions decreases. Therefore, by alternately performing the first and second modes and generating positive ions and negative ions separately, recombination of positive ions and negative ions can be suppressed and the amount of generated ions can be increased.

  Moreover, the diffusion rate of positive ions is faster than the diffusion rate of negative ions. Therefore, if Ta ≧ Tb, the concentration of positive ions is higher than the concentration of negative ions around the ion generator. When positive ions and negative ions become non-uniform in this way, the efficiency of removing airborne bacteria, molds, viruses, etc. in the air by positive ions and negative ions decreases. On the other hand, in the present invention, since Ta <Tb, the concentration of positive ions and the concentration of negative ions are substantially equal around the ion generator, and airborne bacteria, mold fungi, Viruses can be removed with high efficiency.

  In the first embodiment, it is possible to efficiently generate positive ions and negative ions and diffuse them uniformly over a wide range without generating an air flow for delivering ions. Thereby, it is possible to reduce the power and size of the ion generator, and to increase the usage of the ion generator.

  In addition, although it does not specifically limit about the time range of Ta and Tb, It is preferable that Tb is longer than Ta and is 3 times or less of Ta. Specifically, when Ta is 5 seconds, Tb is preferably longer than 5 seconds and 15 seconds or less (5 seconds <Tb ≦ 15 seconds). This is because if Tb is made extremely longer than Ta, negative ions are increased more than positive ions, and the efficiency of removing airborne bacteria, mold fungi, viruses, etc. in the air is reduced by positive ions and negative ions. .

  Moreover, although the electrodes 3 and 4 generate | occur | produced ion by corona discharge, it is not restricted to this, You may generate | occur | produce ion by dielectric barrier discharge, and you may generate | occur | produce ion by radiation, water fracture, etc. When an ion generation method other than corona discharge is used, the control method of the ion generator may be configured in accordance with the generation method.

  Further, the high voltage generator 1 may incorporate the voltage application controller 2. Further, the voltage application control unit 2 may switch the voltage application to the electrodes 3 and 4, or the voltage application control unit 2 may switch the voltage application to the electrodes 3 and 4 in accordance with a control signal from the outside of the ion generator. Good.

[Embodiment 2]
FIG. 3 is a time chart showing the operation of the voltage application controller 2 of the ion generator according to Embodiment 2 of the present invention. FIG. 4 is an enlarged view of a portion A in FIG. 3 and is compared with FIG. 3 and 4, the voltage control application unit 2 has a short cycle mode in which the voltage application to the electrodes 3 and 4 is switched in a short cycle and a long cycle mode in which the voltage application to the electrodes 3 and 4 is switched in a long cycle. The short cycle mode and the long cycle mode are alternately performed. A period in which the short cycle mode is performed is Tx, and a period in which the long cycle mode is performed is Ty.

  In each of the periods Tx and Ty, the first mode in which the positive high voltage Va is applied to the positive electrode 3 and the second mode in which the negative high voltage Vb is applied to the negative electrode 4 are alternately performed. . In the period Tx, the time Ta for performing the first mode is set shorter than the time Tb for performing the second mode (Ta <Tb). In the period Ty, the time Tc for performing the first mode is set shorter than the time Td for performing the second mode (Tc <Td). Further, Ta <Tc, Tb <Td.

  Here, the reason and effect of performing the short cycle mode and the long cycle mode alternately will be described. When positive ions and negative ions are generated alternately, the longer the time during which a single electrode (electrode 3 or 4) is energized, the more the ions of that polarity are diffused. However, if the time during which one electrode is energized is long, the presence of positive ions and negative ions in the air is not uniform, and there may be a time when only positive ions or negative ions exist.

  Conversely, the shorter the time during which one electrode is energized, the more positive ions and negative ions will be present in the air, but it will approach the state where both electrodes are energized. There is a high possibility that recombination will occur, and ion diffusion cannot be expected. Therefore, a period Tx for energizing the positive electrode and the negative electrode with a short period and a period Ty for energizing with a long period are provided, and in the period Tx, positive ions and negative ions are uniformly present in the air, In the period Ty, ions can be diffused farther.

  The time range of Ta, Tb, Tc, and Td is not particularly limited. Specifically, 1 second <Ta ≦ 10 seconds, 1 second <Tb ≦ 10 seconds, 10 seconds ≦ Tc <60 seconds, 10 seconds. ≦ Td <60 seconds is preferable. At this time, it is preferable that Tc is longer than Tb. As a result, the energization times Tc and Td in the period Ty are longer than the energization times Ta and Tb in the period Tx, and a time difference between the periods Tx and Ty occurs, so that the above effect can be obtained with certainty.

  Further, the energization time in the period Ty is preferably twice or more than the energization time in the period Tx. That is, it is preferable that the energization time Tc in the period Ty is twice or more as long as the energization time Ta in the period Tx, and the energization time Td in the period Ty is twice or more as long as the energization time Tb in the period Tx. preferable.

  Based on the above, specifically, when Ta is 5 seconds and Tb is 10 seconds, Tc and Td are preferably 20 seconds or more. As a result, the effect of the second embodiment becomes clearer, and positive ions and negative ions can be generated more efficiently.

[Embodiment 3]
FIG. 5 is a time chart showing the operation of the voltage application control unit 2 of the ion generator according to Embodiment 3 of the present invention, and is a diagram compared with FIG. In FIG. 5, the voltage application control unit 2 includes a first mode in which a positive high voltage Va is applied to the positive electrode 3, a second mode in which the negative high voltage Vb is applied to the negative electrode 4, A high voltage Va is applied to the positive electrode 3 and a negative high voltage Vb is applied to the negative electrode 4.

  In this ion generator, the period Tx in which the first and second modes are alternately performed and the period Tz in which the third mode is performed are alternately provided. In the period Tx, as in the first embodiment, the time Ta for performing the first mode is set shorter than the time Tb for performing the second mode (Ta <Tb). The energization time of the period Tz is assumed to be Te.

  In the third embodiment, since the period Tz in which both the positive electrode 3 and the negative electrode 4 are energized is provided, the generation amount of positive ions and the generation amount of negative ions in the vicinity of the ion generator are made uniform. In addition, the effect of removing floating bacteria and the like by positive ions and negative ions can be enhanced.

  In addition, when positive ions and negative ions are generated alternately, the outer case of the ion generator is likely to be charged, which may hinder the delivery of ions. However, by providing a period Tz in which positive ions and negative ions are generated simultaneously, charging of the outer case of the ion generator can be reduced, and ions can be easily sent out.

  Note that the time range of Ta, Tb, and Te is not particularly limited. In FIG. 5, the first to third modes are performed once during one period, but the number of times of each of the first to third modes is not particularly limited. For example, the first and second modes may be performed a plurality of times in the period Tx.

  In FIG. 5, the first to third modes are performed in order, but the order of performing the first to third modes is not particularly limited. For example, the order of the first mode, the third mode, and the second mode may be used. In addition to the first embodiment in which the first and second modes are alternately performed, the third mode may be performed in each of the first and second modes and between the second and first modes. Good. In this case, the first mode, the third mode, the second mode, and the third mode are performed within one cycle.

[Embodiment 4]
FIG. 6 is a time chart showing the operation of the voltage application control unit 2 of the ion generator according to Embodiment 4 of the present invention, and is a diagram compared with FIG. In FIG. 6, in this ion generator, the high voltage generator 1 generates two sinusoidal high voltages having different periods. The voltage application control unit 2 applies a first mode in which a positive voltage of a sine wave-like high voltage with a shorter cycle is applied to the positive electrode 3 and a negative voltage of a sine wave-like high voltage with a longer cycle. The second mode in which a voltage is applied to the negative electrode 4 is alternately performed. The time Ta for performing the first mode is shorter than the time Tb for performing the second mode. In the fourth embodiment, the same effect as in the first embodiment can be obtained.

  In FIG. 6, a high voltage that changes in a sine wave shape is generated. However, the present invention is not limited to this, and any high voltage that continuously changes between a positive high voltage and a negative high voltage can be used. A high voltage with such a waveform may be used. For example, a high voltage that changes in a sawtooth waveform or a high voltage that changes in a triangular waveform may be used.

[Embodiment 5]
FIG. 7 is a time chart showing the operation of the voltage application control unit 2 of the ion generator according to Embodiment 5 of the present invention, and is a diagram compared with FIG. In FIG. 7, in this ion generator, the high voltage generator 1 generates a plurality of sinusoidal high voltages having different phases. The voltage application control unit 2 applies a first mode in which a positive voltage of the sinusoidal high voltage is applied to the positive electrode 3 and a first mode in which a negative voltage of the sinusoidal high voltage is applied to the negative electrode 4. 2 modes. The second mode is started during the execution of the first mode, and the first mode is started during the execution of the second mode. For this reason, there exists a period Tz in which both the first and second modes are performed. The time Ta for performing the first mode is set to a time shorter than the time Tb for performing the second mode.

  Here, since the generation amount of positive ions and negative ions depends on the voltage applied to the electrodes 3 and 4, respectively, the ions applied in time can be generated by continuously changing the voltage applied to the electrodes 3 and 4. The amount can be controlled, and optimal ion generation control can be performed in a windless environment.

  In FIG. 7, a high voltage that changes in a sine wave shape is generated. However, the present invention is not limited to this, and any high voltage that continuously changes between a positive high voltage and a negative high voltage can be used. A high voltage with such a waveform may be used. For example, a high voltage that changes in a sawtooth waveform or a high voltage that changes in a triangular waveform may be used.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 High voltage generator, 2 Voltage application controller, 3 Positive electrode, 4 Negative electrode.

Claims (6)

A positive electrode that generates positive ions when a positive voltage is applied;
A negative electrode that generates negative ions when a negative voltage is applied;
A voltage application having a first mode in which the positive voltage is applied to the positive electrode and a second mode in which the negative voltage is applied to the negative electrode, wherein the first and second modes are alternately performed. A control unit,
Said first time for a first mode, is set shorter than the second time for the second mode,
The voltage application control unit further includes a short cycle mode for switching the first and second modes at a first cycle, and a second cycle longer than the first cycle for the first and second modes. The ion generator has a long-period mode that is switched at the same time, and alternately performs the short-period mode and the long-period mode . The voltage application control unit further includes a third mode in which the positive voltage is applied to the positive electrode and the negative voltage is applied to the negative electrode, and between the first mode and the second mode, The ion generator according to claim 1, wherein the third mode is performed in at least one of the second mode and the first mode. The voltage application control unit, the continuously changing the positive voltage in the first time, the continuously varying the negative voltage in the second period, according to claim 1 or claim 2 Ion generator. A method of generating ions in an ion generator comprising a positive electrode that generates positive ions when a positive voltage is applied and a negative electrode that generates negative ions when a negative voltage is applied,
Alternately performing a first mode in which the positive voltage is applied to the positive electrode and a second mode in which the negative voltage is applied to the negative electrode;
The first time for the first mode shorter than the second time for the second mode,
Further, a short cycle mode in which the first and second modes are switched at a first cycle, and a long cycle mode in which the first and second modes are switched at a second cycle longer than the first cycle. An ion generation method that is performed alternately . Further, the positive voltage is applied to the positive electrode and the negative voltage is applied to the negative electrode during at least one of the first and second modes and between the second and first modes. The ion generation method according to claim 4 , wherein a third mode in which is applied is performed. The ion generation method according to claim 4 or 5 , wherein the positive voltage is continuously changed within the first time period, and the negative voltage is continuously changed within the second time period.

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