WO2018212077A1 - Générateur d'ions - Google Patents

Générateur d'ions Download PDF

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Publication number
WO2018212077A1
WO2018212077A1 PCT/JP2018/018204 JP2018018204W WO2018212077A1 WO 2018212077 A1 WO2018212077 A1 WO 2018212077A1 JP 2018018204 W JP2018018204 W JP 2018018204W WO 2018212077 A1 WO2018212077 A1 WO 2018212077A1
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WIPO (PCT)
Prior art keywords
electrode
arc
discharge
current
ion generator
Prior art date
Application number
PCT/JP2018/018204
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English (en)
Japanese (ja)
Inventor
正義 佐竹
賢吾 福永
登 前田
かほり 石田
四方　一史
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from JP2018027838A external-priority patent/JP6766834B2/ja
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2018212077A1 publication Critical patent/WO2018212077A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere

Definitions

  • the present disclosure relates to an ion generator that generates ions by inducing corona discharge.
  • a discharge unit that generates ions by applying a voltage from a power supply unit to a discharge unit having a discharge electrode and a counter electrode to form a discharge circuit and causing corona discharge.
  • a discharge unit there is a discharge unit having a needle-like discharge electrode and a flat counter electrode, and a resistor is arranged in series in the discharge circuit (see, for example, Patent Document 1).
  • the current flowing in the discharge circuit is suppressed by the resistors arranged in series in the discharge circuit, and the spark of the discharge can be suppressed.
  • the resistance value of the resistor arranged in the discharge circuit is increased, it becomes impossible to secure a current necessary for corona discharge, and sufficient ions cannot be generated.
  • An object of the present disclosure is to stably generate corona discharge between the discharge electrode and the reference electrode and to prevent arc discharge generated in the discharge electrode.
  • an ion generator includes a reference electrode, a discharge electrode disposed apart from the reference electrode, and a voltage that generates a corona discharge between the discharge electrode and the reference electrode. And generating a corona discharge in the discharge electrode to generate ions.
  • the ion generator includes an arc electrode disposed apart from the reference electrode, and generates an arc discharge preferentially at the arc electrode over the discharge electrode.
  • the ion generator according to the first embodiment will be described with reference to FIGS.
  • this ion generator is used, for example, in an ion wind sending device that ejects a wind containing ions toward the face of a vehicle occupant.
  • the ion generator includes a discharge electrode 10, an arc electrode 20, a reference electrode 30, and a power source 40.
  • the reference electrode 30 has a first reference electrode 31 and a second reference electrode 32.
  • the discharge electrode 10 is an electrode for generating corona discharge between the reference electrode 31 and is disposed apart from the reference electrode 31.
  • the discharge electrode 10 has a needle shape, and the tip portion 10a is arranged so as to face the reference electrode 31 side.
  • the discharge electrode 10 is arranged such that the shortest distance between the tip 10a and the reference electrode 31 is a predetermined distance D1.
  • the arc electrode 20 is an electrode for generating an arc discharge between the arc electrode 20 and the reference electrode 32, and is disposed apart from the reference electrode 32.
  • the arc electrode 20 is arranged side by side with the discharge electrode 10 with respect to the reference electrode 30.
  • the arc electrode 20 has a needle shape, and is arranged so that the tip 20a faces the reference electrode 32 side.
  • the arc electrode 20 is disposed such that the shortest distance between the tip 20a and the reference electrode 32 is a predetermined distance D2 shorter than the predetermined distance D1.
  • the arc electrode 20 and the discharge electrode 10 are connected to the negative terminal of the power source 40 via the connection line 2.
  • the discharge electrode 10 and the arc electrode 20 of the present embodiment have the same shape. That is, the angles of the tip 10a of the discharge electrode 10 and the tip 20a of the arc electrode 20 are the same.
  • the reference electrodes 31 and 32 each have a plate shape and are connected to the positive terminal of the power source 40 via the connection line 3.
  • the reference electrodes 31 and 32 are arranged in parallel.
  • the first reference electrode 31 is disposed so as to correspond to the discharge electrode 10
  • the reference electrode 32 is disposed so as to correspond to the arc electrode 20.
  • the discharge electrode 10, the arc electrode 20, and the reference electrodes 31, 32 are each fixed to a support member (not shown).
  • the power supply 40 outputs a predetermined voltage from the positive terminal and the negative terminal.
  • the power source 40 can output a DC voltage of about 6 kV or less.
  • the power supply 40 can change the output voltage in accordance with an operation of an operation unit (not shown) and a control signal input from the outside.
  • the power source 40 of the present embodiment outputs a predetermined voltage (for example, ⁇ 5 kV) that causes the discharge electrode 10 to generate corona discharge.
  • Discharge is a phenomenon in which an electric current flows as a result of a dielectric breakdown occurring in a gas existing between electrodes due to a potential difference applied between the electrodes, whereby electrons are emitted.
  • the corona discharge is a discharge that is continuously generated when a non-uniform electric field is generated around the needle-like electrode.
  • An arc discharge is a discharge mainly for thermionic emission and is accompanied by strong light emission.
  • the present ion generator induces ions by causing corona discharge in the discharge electrode 10.
  • the current flowing through the discharge circuit increases, such as when the environment becomes a high humidity environment or when the distance between the discharge electrode 10 and the reference electrode 31 is shortened due to foreign matter adhering to the discharge electrode 10, arc discharge from corona discharge It will move to. Once an arc discharge occurs in the discharge electrode 10, the discharge electrode 10 and the reference electrode 31 are damaged, and in some cases, corona discharge cannot be performed to generate ions.
  • the ion generator of the present embodiment includes an arc electrode 20 arranged side by side with the discharge electrode 10, and generates an arc discharge in the arc electrode 20 in preference to the discharge electrode 10. Avoid the arcing that occurs.
  • the output voltage of the power supply 40 is between the discharge electrode 10 and the reference electrode 31 and between the arc electrode 20 and the reference electrode 32. Applied. As a result, a strong electric field is generated in the vicinity of the distal end portion 10 a of the discharge electrode 10, and corona discharge is generated around the discharge electrode 10. Similarly, corona discharge also occurs between the arc electrode 20 and the reference electrode 32.
  • a predetermined output voltage for example, ⁇ 5 kV
  • the air around the discharge electrode 10 is ionized and air ions are generated. Specifically, a part of the gas around the discharge electrode 10 and the arc electrode 20 is ionized to generate positive and negative ions.
  • discharge electrode 10 When the discharge electrode 10 is a cathode as in the present ion generator, negative ions move to the reference electrode 31 side by an electric field formed between the discharge electrode 10 and the reference electrode 31. In the process, the surrounding neutral air molecules are involved to generate ionic wind.
  • the voltage between the arc electrode 20 and the reference electrode 32 is the same as the predetermined voltage between the discharge electrode 10 and the reference electrode 31, and the distance D ⁇ b> 2 between the arc electrode 20 and the reference electrode 32. Is configured to be shorter than the distance D1 between the discharge electrode 10 and the reference electrode 31.
  • the arc electrode 20 is set to have a low arc withstand voltage determined by the impedance between the electrodes and the like with respect to the discharge electrode 10, and arc discharge is likely to occur.
  • the present ion generator generates a corona discharge in the discharge electrode 10 between the reference electrode 30, the discharge electrode 10 disposed away from the reference electrode 30, and the discharge electrode 10 and the reference electrode 30. And a power source 40 that outputs a voltage to be generated. Then, ions are generated by generating corona discharge in the discharge electrode 10.
  • the present ion generator further includes an arc electrode 20 disposed away from the reference electrode 30, and causes the arc discharge to be preferentially generated in the arc electrode 20 over the discharge electrode 10.
  • the arc electrode 20 is provided apart from the reference electrode 30, and arc discharge is preferentially generated in the arc electrode 20 over the discharge electrode 10, and therefore, between the discharge electrode and the reference electrode. Corona discharge can be generated stably, and arc discharge generated at the discharge electrode can be prevented.
  • the power supply 40 outputs a predetermined voltage between the arc electrode 20 and the reference electrode 32 in addition to the discharge electrode 10 and the reference electrode 31.
  • the distance between the arc electrode 20 and the reference electrode 32 is configured to be shorter than the distance between the discharge electrode 10 and the reference electrode 31.
  • the impedance of the second discharge circuit composed of the arc electrode 20 and the reference electrode 32 is lower than the impedance of the first discharge circuit composed of the discharge electrode 10 and the reference electrode 31.
  • the arc discharge is more likely to occur than the discharge electrode 10, and the arc discharge can be preferentially generated in the arc electrode 20 over the discharge electrode 10.
  • the ion generator of the present embodiment further includes a distance adjusting mechanism 50 that adjusts the distance between the arc electrode 20 and the reference electrode 31 as compared with the ion wind sending device of the first embodiment. Is different.
  • the distance adjusting mechanism 50 adjusts the position of the arc electrode 20.
  • the distance adjusting mechanism 50 includes a cylindrical member (not shown) that supports the arc electrode 20 so as to be slidable in the axial direction. The operator can slide the arc electrode 20 supported by the cylindrical member in the axial direction to move the position of the arc electrode 20 closer to or away from the reference electrode 32. .
  • the ion generator of this embodiment has the distance adjustment mechanism 50 which adjusts the distance of the electrode 20 for arcs, and the reference
  • standard electrode 32 is provided.
  • the tip 20 a of the arc electrode 20 is worn by arc discharge, the tip 20 a of the arc electrode 20 is easily brought close to the reference electrode 32 and the arc 20 is preferentially arced over the discharge electrode 10. The discharge can be adjusted to occur.
  • the ion generator of the second embodiment includes the distance adjustment mechanism 50 that adjusts the position of the arc electrode 20, but the ion generator of the present embodiment replaces the distance adjustment mechanism 50 with the reference electrode 32. Is provided with a distance adjusting mechanism 51 for adjusting the position.
  • the distance adjustment mechanism 51 adjusts the position of the reference electrode 32.
  • the distance adjusting mechanism 51 is configured by a support member (not shown) that supports the reference electrode 32 so as to be movable in the axial direction of the arc electrode 20.
  • the support member is configured to sandwich the reference electrode 32.
  • the operator can slide the reference electrode 32 supported by the support member in the axial direction of the arc electrode 20 to move the position of the arc electrode 20 closer to or away from the reference electrode 32. ing.
  • the ion generator of this embodiment has the distance adjusting mechanism 51 that adjusts the distance between the arc electrode 20 and the reference electrode 31, the distance D2 between the arc electrode 20 and the reference electrode 32 is provided. Can be easily adjusted, and conditions for generating arc discharge in the arc electrode 20 can be easily changed.
  • the ion generator which concerns on 4th Embodiment is demonstrated using FIG.
  • the ion generator of the present embodiment further suppresses the current flowing through the discharge electrode 10 in the first discharge circuit composed of the discharge electrode 10 and the reference electrode 31 as compared with the ion wind sending device of the first embodiment.
  • the first resistor 61 is arranged, and the second discharge circuit composed of the arc electrode 20 and the reference electrode 32 is provided with a second resistor 62 that suppresses the current flowing through the arc electrode 20.
  • the distance D1 between the discharge electrode 10 and the first reference electrode 31 is equal to the distance D2 between the arc electrode 20 and the reference electrode 32.
  • the first resistor 61 is disposed between the negative electrode terminal of the power source 40 and the discharge electrode 10.
  • the second resistor 62 is disposed between the negative electrode terminal of the power supply 40 and the arc electrode 20.
  • the voltage applied to the first discharge circuit composed of the discharge electrode 10 and the reference electrode 31 is the same as the voltage applied to the second discharge circuit composed of the arc electrode 20 and the reference electrode 32.
  • the resistance value of the second resistor 62 of the present embodiment is configured to be smaller than that of the first resistor 61, and the impedance of the second discharge circuit composed of the arc electrode 20 and the reference electrode 32 is the discharge electrode 10. And the impedance of the first discharge circuit composed of the reference electrode 31 is lower. For this reason, the arc electrode 20 is more susceptible to arc discharge than the discharge electrode 10. In other words, the arc electrode 20 is set to have a low arc withstand voltage determined by the impedance between the electrodes and the like with respect to the discharge electrode 10, and arc discharge is likely to occur.
  • the resistance value of the second resistor 62 is configured to be smaller than that of the first resistor 61, arc discharge is generated in the arc electrode 20 in preference to the discharge electrode 10. It is configured as follows.
  • the second resistor 62 has a knob (not shown), and its resistance value is changed by rotating this knob.
  • the operator can easily change the resistance value of the second resistor 62, and arc discharge is applied to the arc electrode 20. Conditions to be generated can be easily changed.
  • FIGS. 6 An ion generator according to a sixth embodiment will be described with reference to FIGS.
  • the ion generator of this embodiment is further provided with a current measuring unit 71, a control unit 72, and a distance adjusting mechanism 70 in addition to the ion generator of the first embodiment.
  • the current measuring unit 71 measures the current flowing through the arc electrode 20 and outputs a signal corresponding to the measured current to the control unit 72.
  • the current measuring unit 71 can be configured using a Rogowski coil type current sensor, a Hall element type current sensor, or the like.
  • the control unit 72 is configured as a computer including a CPU, RAM, ROM, flash memory, I / O, and the like, and the CPU performs various processes according to programs stored in the ROM.
  • the flash memory of the control unit 72 corresponds to a storage unit.
  • These CPU, RAM, ROM, and flash memory are non-transitional physical storage media.
  • the distance adjusting mechanism 70 adjusts the distance between the arc electrode 20 and the reference electrode 32.
  • the distance adjusting mechanism 70 of the present embodiment includes a shaft that supports the arc electrode 20, a cylindrical member (not shown) that supports the shaft so as to be slidable in the axial direction, and a rack formed on a side surface of the shaft. It has a pinion that engages and an electric actuator (none of which is shown) that rotationally drives the pinion. When the electric actuator is driven by the controller 72, the pinion rotates and the shaft moves in the axial direction.
  • the controller 72 of the ion generator of the present embodiment when the ion generator is in an operating state, specifies a current flowing through the arc electrode 20 based on a signal output from the current measuring unit 71 for each fixed period ⁇ t. Perform specific processing. Further, in parallel with the current specifying process, the control unit 72 determines whether or not the integrated value of the current flowing through the arc electrode 20 is equal to or greater than the threshold value, and the integrated value of the current flowing through the arc electrode 20 is the threshold value. When it determines with it being above, the process which controls the distance adjustment mechanism 70 is implemented so that the distance of the electrode 20 for arcs and the reference electrode 32 may be lengthened more.
  • FIG. 8 shows a flowchart of this process.
  • the control unit 72 periodically performs the process shown in FIG. Note that each control step in the flowchart of each drawing constitutes various function realizing means possessed by the control unit 72.
  • the distance adjusting mechanism 70 is set so that the distance between the arc electrode 20 and the reference electrode 32 is shorter than the distance between the discharge electrode 10 and the reference electrode 31.
  • control unit 72 specifies the integrated value of the current flowing through the arc electrode 20 in S100. Specifically, the integrated value of the current flowing through the arc electrode 20 is specified by integrating the period ⁇ t during which the current flows through the arc electrode 20 with respect to the current flowing through the arc electrode 20 specified by the current specifying process. .
  • the distance between the arc electrode 20 and the reference electrode 32 is adjusted in S104. Specifically, the distance adjusting mechanism 70 is controlled so as to shorten the distance between the arc electrode 20 and the reference electrode 32. In other words, the electric actuator of the distance adjusting mechanism 70 is controlled so that the distance between the arc electrode 20 and the reference electrode 32 becomes shorter.
  • the current integrated value is reset, and this process ends.
  • the present ion generator includes the current measuring unit 71 that measures the current flowing through the arc electrode 20. Further, the present ion generator determines whether or not the integrated value of the current flowing through the arc electrode 20 is equal to or greater than a threshold based on the measurement result of the current measuring unit 71 (S100), and the current flowing through the arc electrode 20 When it is determined that the integrated value is equal to or greater than the threshold value, the distance adjusting mechanism 70 is controlled to shorten the distance between the arc electrode 20 and the reference electrode 32 (S104).
  • the control unit 72 of the ion generator of the present embodiment determines whether or not arc discharge has occurred in the arc electrode 20 based on the current flowing through the arc electrode 20 and determines that arc discharge has occurred in the arc electrode 20. If so, a process for shortening the distance between the arc electrode 20 and the reference electrode 32 is performed.
  • FIG. 9 is a flowchart of the control unit 72 of the present embodiment. When the ion generator is in an operating state, the control unit 72 performs the process shown in FIG.
  • the controller 72 specifies the voltage X between the arc electrode 20 and the reference electrode 32 in S200.
  • the voltage X between the arc electrode 20 and the reference electrode 32 can be specified based on a control signal output to the power supply 40.
  • the current flowing through the arc electrode 20 is specified.
  • the current flowing through the arc electrode 20 can be specified based on the signal output from the current measuring unit 71.
  • step S206 the distance between the arc electrode 20 and the reference electrode 32 is adjusted. Specifically, the distance adjusting mechanism 70 is controlled so as to make the distance between the arc electrode 20 and the reference electrode 32 longer. That is, the electric actuator of the distance adjusting mechanism 70 is controlled so that the distance between the arc electrode 20 and the reference electrode 32 becomes longer, and this process is terminated.
  • the distance between the arc electrode 20 and the reference electrode 32 is greater. Since it is controlled to be longer, the distance between the arc electrode 20 and the reference electrode 32 can be changed to a distance suitable for the humidity around the ion generator.
  • the ion generator of the present embodiment includes a second resistor 62 a configured by a variable resistor instead of the distance adjusting mechanism 70. Different points.
  • the control part 72 of the ion generator of this embodiment implements the process of S300 of FIG. 11 instead of the process of S104 of FIG.
  • the second resistor 62 a is connected to the arc electrode 20 and limits the current flowing through the arc electrode 20.
  • the resistance value of the second resistor 62a changes according to a control signal from the control unit 72.
  • control unit 72 ends the present process without performing the process in S300.
  • the second resistor 62a When the integrated value of the current flowing through the arc electrode 20 is equal to or greater than the threshold value, the second resistor 62a is set so that the potential difference between the arc electrode 20 and the reference electrode 32 becomes larger in S300. Adjust the resistance value. Specifically, the variable resistor constituting the second resistor 62a is controlled so as to make the resistance value of the second resistor 62a smaller, and the process proceeds to S106.
  • the resistance value of the second resistor 62a is increased. Since it is made smaller, arc discharge can be preferentially generated in the arc electrode 20 than the discharge electrode 10.
  • the control unit 72 causes the arc to flow in S204. It is determined that arc discharge has occurred in working electrode 20, and in S400, the resistance value of second resistor 62a is adjusted so that the potential difference between arcing electrode 20 and reference electrode 32 becomes smaller. Specifically, the second resistor 62a is controlled to increase the resistance value of the second resistor 62a, and the process proceeds to S106.
  • the resistance value of the second resistor 62a is increased even when the ambient humidity of the ion generator becomes high and arc discharge frequently occurs in the arc electrode 20. Therefore, the resistance value of the second resistor 62a can be changed to a condition suitable for the humidity around the ion generator.
  • the process ends without performing the process of S400.
  • FIG. 13 shows a flowchart of the control unit 72 of the ion generator of this embodiment.
  • the control unit 72 periodically performs the process shown in FIG. In the present embodiment, the distance between the arc electrode 20 and the reference electrode 32 is shorter than the distance between the discharge electrode 10 and the reference electrode 31 by the distance adjusting mechanism 70.
  • the control unit 72 first controls the output voltage of the power supply 40 to the predetermined voltage X in S500. Specifically, a control signal is output to the power supply 40 so that the output voltage of the power supply 40 becomes the predetermined voltage X.
  • the control unit 72 determines whether or not the measurement value of the current measurement unit 71 is greater than the threshold value IA.
  • the increased voltage ⁇ x can be set to 0.1 kV, for example.
  • the output voltage of the power supply 40 gradually increases.
  • the voltage ⁇ x for the decrease can be set to 0.1 kV, for example.
  • the output voltage of the power source 40 before the decrease is 4.7 kV
  • the output voltage of the power supply 40 is maintained until arc discharge occurs in the arc electrode 20 and the measured value of the current measuring unit 71 becomes larger than the threshold value IA.
  • the present ion generator includes the current measuring unit 71 that measures the current flowing through the arc electrode 20. Further, the output voltage of the power source 40 is increased stepwise until it is determined that arc discharge has occurred in the arc electrode 20 based on the measurement result of the current measurement unit 71, and the arc voltage is determined based on the measurement result of the current measurement unit. When it is determined that arc discharge has occurred in the electrode, control is performed so as to reduce the output voltage of the power source.
  • the ion generator of the eighth embodiment has the same configuration, and the resistance value of the second resistor 62 constituting the variable resistor is configured to be smaller than the resistance value of the first resistor 61.
  • the processing of the control unit 72 can also be performed in the same manner as that shown in FIG.
  • the potential difference between the discharge electrode 10 and the reference electrode 31 can be maintained at the maximum voltage that does not cause an arc discharge in the discharge electrode 10, and corona discharge is caused. Ion generation can be achieved with maximum efficiency.
  • the reference electrode 30 is configured by the two reference electrodes 31 and 32.
  • the number of the reference electrodes 30 is one. That is, the discharge electrode 10 and the arc electrode 20 are arranged corresponding to one reference electrode 30.
  • the discharge electrode 10 and the arc electrode 20 can be arranged corresponding to the reference electrode 30 in one.
  • the discharge electrode 10 and the arc electrode 20 each having a needle shape and the reference electrodes 31 and 32 having a plate shape are provided.
  • the ion generator of the present embodiment includes the discharge electrode 10.
  • the arc electrode 20 and the reference electrodes 31 and 32 are each composed of a conductive plate member (for example, stainless steel).
  • the ion generator of this embodiment has the discharge electrode 10 which has five acute angle parts, and the electrode 20 for arcs which has one acute angle part.
  • the discharge electrode 10 and the arc electrode 20 are formed by cutting or shearing the same flat plate into a sawtooth shape.
  • the discharge electrode 10 and the arc electrode 20 are physically and electrically connected to each other.
  • the discharge electrode 10 and the arc electrode 20 have the same plate thickness of about 0.5 mm. Further, the tip of the arc electrode 20 has an acute angle with respect to the tip of the discharge electrode 10.
  • the discharge electrode 10, the arc electrode 20, and the reference electrodes 31, 32 are each composed of a conductive plate member. For this reason, the discharge electrode 10, the arc electrode 20, and the reference electrodes 31, 32 can be efficiently formed, and productivity can be improved.
  • the discharge electrode 10 and the arc electrode 20 are integrally formed, the number of parts can be reduced as compared with the case where the discharge electrode 10 and the arc electrode 20 are configured as separate bodies, and further the production. Can be improved.
  • the ion generator of this embodiment includes an arc power switch 73 for cutting off the application of voltage between the arc electrode 20 and the reference electrode 32.
  • the arc power switch 73 is provided between the negative terminal of the power supply 40 and the distance adjusting mechanism 70.
  • the arc power switch 73 is switched to an on state or an off state in accordance with a control signal from the control unit 72.
  • control unit 72 of the ion generator of the present embodiment is different from the process shown in FIG. 13 in that S508 is performed after step S506.
  • the control unit 72 periodically performs the process shown in FIG.
  • the distance between the arc electrode 20 and the reference electrode 32 is shorter than the distance between the discharge electrode 10 and the reference electrode 31 by the distance adjusting mechanism 70.
  • the control unit 72 first controls the arc power switch 73 to be in the ON state and controls the output voltage of the power source 40 to the predetermined voltage X in S500. Specifically, a control signal is output to the power supply 40 so that the output voltage of the power supply 40 becomes the predetermined voltage X.
  • the control unit 72 determines whether or not the measurement value of the current measurement unit 71 is greater than the threshold value IA.
  • the increased voltage ⁇ x can be set to 0.5 kV, for example.
  • the controller 72 controls the arc power switch 73 to be turned off in S508.
  • the control unit 72 controls the arc power switch 73 to be in the OFF state, and then causes corona discharge to occur in the discharge electrode 10 for a predetermined period in a state where the output voltage of the power source 40 is decreased in S506, and for a predetermined period. When elapses, this process is terminated.
  • the ion generator of the present embodiment has three arc electrodes 21 to 23 as the arc electrode 20. Further, the ion generator of the present embodiment includes a selection switch 74 that switches voltage application at each of the arc electrodes 21 to 23.
  • the arc electrodes 21 to 23 each have a needle shape and are disposed to face the reference electrode 32.
  • the selection switch 74 selects the voltage output from the power supply 40 to be applied to any one of the plurality of arc electrodes.
  • the selection switch 74 is disposed between the current measurement unit 71 and each of the arc electrodes 21 to 23.
  • the selection switch 74 is switched by a control signal input from the control unit 72.
  • control part 72 of this embodiment implements the process shown in FIG. 23 regularly.
  • the distance between the arc electrode 20 and the reference electrode 32 is shorter than the distance between the discharge electrode 10 and the reference electrode 31 by the distance adjusting mechanism 70.
  • the control unit 72 controls the arc power switch 73 to be turned on, and the selection switch is applied so that the output voltage of the power source 40 is applied to one of the arc electrodes 21 to 23. 74 is controlled.
  • the selection switch 74 is controlled so that the output voltage of the power source 40 is applied to the arc electrode 21.
  • the output voltage of the power supply 40 is controlled to a predetermined voltage X. Specifically, a control signal is output to the power supply 40 so that the output voltage of the power supply 40 becomes the predetermined voltage X for a predetermined time.
  • control unit 72 specifies the discharge current flowing through the arc electrode 21 based on the signal output from the current measurement unit 71 in S602.
  • control unit 72 stores the current value specified in S602 in the flash memory.
  • control unit 72 determines whether or not the current values have been specified for all the arc electrodes 21 to 23.
  • the determination in S606 is NO, and then, in S608, the output voltage of the power source 40 is applied to the arc electrode whose current value is not measured.
  • the selection switch 74 is controlled so that is applied.
  • the selection switch 74 is controlled so that the output voltage of the power source 40 is applied to the arc electrode 22.
  • the output voltage of the power supply 40 is controlled to a predetermined voltage X. Specifically, a control signal is output to the power supply 40 so that the output voltage of the power supply 40 becomes the predetermined voltage X for a predetermined time, and the process returns to S602.
  • control unit 72 specifies the discharge current flowing through the arc electrode 21 based on the signal output from the current measurement unit 71 in S602.
  • control unit 72 stores the current value specified in S602 in the flash memory.
  • control unit 72 determines whether or not the current value of the discharge current has been specified for all the arc electrodes 21 to 23.
  • the determination in S606 is NO, and the control unit 72 then determines that the output voltage of the power supply 40 is applied to the arc electrode 23 in S608.
  • the selection switch 74 is controlled to be applied.
  • the output voltage of the power supply 40 is controlled to a predetermined voltage X. Specifically, a control signal is output to the power supply 40 so that the output voltage of the power supply 40 becomes the predetermined voltage X for a predetermined time.
  • the control unit 72 specifies the current value of the discharge current in all the arc electrodes 21 to 23, the determination in S606 becomes YES, and then the control unit 72 determines the failure arc for S610. It is determined whether or not there is an electrode. Specifically, when the ratio of the current value of one of the arc electrodes 21 to 23 and the current value of the other electrode is larger than a predetermined threshold value, the control unit 72 determines the failure electrode. Judge that there is.
  • the ratio between the current value of the arc electrode 21 and the current value of the arc electrode 22 is greater than a predetermined threshold value. Further, it is determined whether or not the ratio between the current value of the arc electrode 22 and the current value of the arc electrode 23 is greater than a predetermined threshold value. Further, it is determined whether or not the ratio between the current value of the arc electrode 21 and the current value of the arc electrode 23 is greater than a predetermined threshold value. Then, it is determined whether or not there is one in which the ratio between the current value of the arc electrode 21 and the current value of the arc electrode 22 is larger than a predetermined threshold value.
  • the control unit 72 specifies the faulty arc electrodes 21 to 23 in S612.
  • the arc electrodes 21 to 23 are worn and the distance from the reference electrode 32 is shortened, the current value of the discharge current decreases, so that it can be specified that the electrode having the smaller current value has failed. .
  • step S614 the control unit 72 excludes the faulty arc electrode from being used. Specifically, it is registered as a fault arc electrode in the flash memory of the control unit 72, and this process ends. Thereafter, the control unit 72 performs discharge control by excluding the fault arc electrode in the flash memory of the control unit 72.
  • control unit 72 ends this process without proceeding to S614.
  • the ion generator selects the plurality of arc electrodes 21 to 23 and the voltage output from the power source to be applied to any one of the plurality of arc electrodes 21 to 23.
  • the plurality of arc electrodes 21 to 23 are provided, even if any of the plurality of arc electrodes 21 to 23 fails, arc discharge is generated by the other normal arc electrodes 21 to 23. Can be made. Further, it is possible to recognize whether or not a failure has occurred in any of the plurality of arc electrodes 21 to 23 based on the current measured by the current measuring unit 71.
  • the ion generator sequentially switches the arc electrodes 21 to 23 selected by the selection switch 74 and stores the current value of the current flowing through the arc electrodes 21 to 23 measured by the current measuring unit 71 in the storage unit.
  • a storage control unit is provided.
  • the storage control unit includes a failure determination unit that determines whether there is a faulty arc electrode 21 to 23 based on the current value stored in the storage unit.
  • a limiting unit is provided that restricts the selection switch 74 from selecting the failed arc electrodes 21 to 23 when it is determined by the failure determination unit that there are failed arc electrodes 21 to 23.
  • the discharge electrode 10, the arc electrode 20, and the reference electrodes 31, 32 are each composed of a conductive plate member (for example, stainless steel), and the discharge electrode 10 and the arc electrode 20 are Are physically and electrically connected to each other.
  • the discharge electrode 10, the arc electrode 20, and the reference electrodes 31, 32 are the same in that each is formed of a conductive plate member (for example, stainless steel).
  • the electrode 10 and the arc electrode 20 are configured as separate bodies.
  • the discharge electrode 10 and the arc electrode 20 can be configured as separate bodies.
  • each said embodiment does not have the housing
  • the discharge electrode 10, the electrode 20 for arcs, and a reference electrode You may provide the housing
  • an injection port may be provided in the housing, and an ion wind containing ions generated by corona discharge may be injected from the injection port.
  • a rectangular wave pulse signal is output from the power source 40 to the first discharge circuit composed of the discharge electrode 10 and the reference electrode 31 and the second discharge circuit composed of the arc electrode 20 and the reference electrode 32, A vortex ring containing ions generated by corona discharge may be ejected from the mouth.
  • the ion generator of each said embodiment showed the example which produces ion by generating corona discharge in the discharge electrode 10, it is equipped with the air blower which ventilates the produced
  • the resistance value of the second resistor 62a is adjusted in S300 so that the potential difference between the arc electrode 20 and the reference electrode 32 becomes larger. You may comprise so that the output voltage of the power supply 40 may be enlarged so that the electric potential difference between the electrode 20 and the reference electrode 32 may become larger.
  • the resistance value of the second resistor 62a is adjusted in S400 so that the potential difference between the arc electrode 20 and the reference electrode 32 becomes smaller.
  • the output voltage of the power supply 40 may be further reduced so that the potential difference between the electrode 20 and the reference electrode 32 becomes smaller.
  • the arc electrode 20 and the discharge electrode 10 are connected to the negative terminal of the power supply 40, and the reference electrodes 31 and 32 are connected to the positive terminal of the power supply 40.
  • the arc electrode 20 and the discharge electrode 10 may be connected to the positive terminal of the power source 40, and the reference electrodes 31 and 32 may be connected to the negative terminal of the power source 40.
  • a power source that outputs a voltage to the discharge electrode 10 and the reference electrode 31 and a power source that outputs a voltage to the arc electrode 20 and the reference electrode 32 may be provided separately. Good.
  • the discharge electrode 10, the arc electrode 20, and the reference electrode 30 are each composed of a conductive plate member, but at least the discharge electrode 10, the arc electrode 20, and the reference electrode 30 are included.
  • the present disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily indispensable except for the case where it is clearly indicated that the element is essential and the case where the element is clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case.
  • the present ion generator includes a reference electrode, a discharge electrode arranged away from the reference electrode, and a discharge electrode and a reference electrode. And a power source that outputs a voltage for generating a corona discharge in the discharge electrode. Then, ions are generated by generating corona discharge in the discharge electrode.
  • the present ion generator further includes an arc electrode disposed apart from the reference electrode, and causes arc discharge to be preferentially generated in the arc electrode over the discharge electrode.
  • the power source outputs a predetermined voltage between the arc electrode and the reference electrode in addition to the discharge electrode and the reference electrode, and the distance between the arc electrode and the reference electrode is The distance between the discharge electrode and the reference electrode is shorter.
  • the impedance of the second discharge circuit composed of the arc electrode and the reference electrode is lower than the impedance of the first discharge circuit composed of the discharge electrode and the reference electrode. Therefore, arc discharge is more likely to occur, and arc discharge can be preferentially generated in the arc electrode than the discharge electrode.
  • the output of the power source until it is determined that an arc discharge has occurred in the arc electrode based on the measurement result of the current measurement unit and the current measurement unit that measures the current flowing through the arc electrode is decreased.
  • the voltage control part to control is provided.
  • the potential difference between the discharge electrode and the reference electrode can be maintained at the maximum voltage that does not cause arc discharge at the discharge electrode, and the generation of ions by corona discharge can be realized with maximum efficiency. is there.
  • a distance adjusting mechanism for adjusting the distance between the arc electrode and the reference electrode is provided. Therefore, the distance between the arc electrode and the reference electrode can be easily adjusted, and the conditions for generating arc discharge in the arc electrode can be changed.
  • the current measuring unit that measures the current flowing through the arc electrode, and whether the integrated value of the current flowing through the arc electrode based on the measurement result of the current measuring unit is equal to or greater than a threshold value.
  • a current integrated value determination unit Further, a distance control that controls the distance adjustment mechanism to shorten the distance between the arc electrode and the reference electrode when the integrated value of the current flowing through the arc electrode is determined to be greater than or equal to the threshold value by the current integrated value determination unit. And a section.
  • a current measuring unit that measures the current flowing through the arc electrode, and an arc determination unit that determines whether or not arc discharge has occurred in the arc electrode based on the measurement result of the current measuring unit And.
  • a distance control unit that controls the distance adjusting mechanism to increase the distance between the arc electrode and the reference electrode is provided.
  • the distance between the arc electrode and the reference electrode 32 becomes longer. Therefore, the distance between the arc electrode and the reference electrode can be changed to a distance suitable for the humidity around the ion generator.
  • the first resistor is arranged in series with the first discharge circuit composed of the discharge electrode and the reference electrode and limits the current flowing through the discharge electrode, and the first resistor composed of the arc electrode and the reference electrode. And a second resistor that is arranged in series with the two-discharge circuit and restricts a current flowing through the arc electrode.
  • the power source outputs a predetermined voltage between the arc electrode and the reference electrode in addition to the discharge electrode and the reference electrode, and the resistance value of the second resistor is smaller than the resistance value of the first resistor.
  • the resistance value of the second resistor smaller than the resistance value of the first resistor, arc discharge can be preferentially generated in the arc electrode over the discharge electrode.
  • a current measuring unit that measures a current flowing through the arc electrode and an output of the power source until it is determined that arc discharge has occurred in the arc electrode based on the measurement result of the current measuring unit.
  • a voltage increase unit that increases the voltage stepwise.
  • a voltage control unit is provided for controlling the output voltage of the power source to be lowered.
  • the potential difference between the discharge electrode and the reference electrode can be maintained at the maximum voltage that does not cause arc discharge at the discharge electrode, and the generation of ions by corona discharge can be realized with maximum efficiency. is there.
  • the second resistor is a variable resistor capable of changing a resistance value.
  • the second resistor can also be configured as a variable resistor whose resistance value can be changed.
  • the current measuring unit for measuring the current flowing through the arc electrode is provided. Further, based on the measurement result of the current measuring unit, it is determined whether or not the integrated value of the current flowing through the arc electrode is equal to or greater than a threshold, and the integrated value of the current flowing through the arc electrode is determined to be equal to or greater than the threshold. In this case, the resistance value of the variable resistor constituting the second resistor is controlled to be smaller.
  • the resistance value of the second resistor is made smaller.
  • the arc discharge can be preferentially generated in the arc electrode over the discharge electrode.
  • a current measuring unit for measuring a current flowing through the arc electrode. Further, it is determined whether or not arc discharge has occurred in the arc electrode based on the measurement result of the current measuring unit, and when it is determined that arc discharge has occurred in the arc electrode, the variable resistance constituting the second resistor is determined. Control to increase the resistance value.
  • the resistance value of the second resistor is made smaller.
  • the resistance value of the resistor can be changed to a condition suitable for the humidity around the ion generator.
  • each of the discharge electrode and the arc electrode has a needle-like tip portion, the tip portion is disposed toward the reference electrode, and the tip portion of the arc electrode is The angle is more acute than the tip of the electrode.
  • the tip of the arc electrode by configuring the tip of the arc electrode to have an acute angle with respect to the tip of the discharge electrode, it is possible to preferentially cause arc discharge to the arc electrode over the discharge electrode.
  • the reference electrode has a first reference electrode arranged corresponding to the discharge electrode, and a second reference electrode arranged corresponding to the discharge electrode.
  • the reference electrode can also be configured with a first reference electrode arranged corresponding to the discharge electrode and a second reference electrode arranged corresponding to the discharge electrode.
  • At least one of the discharge electrode, the arc electrode, and the reference electrode is composed of a conductive plate member.
  • the ion generator includes an arc electrode switch for interrupting voltage application between the arc electrode and the reference electrode.
  • the ion generator includes a current measuring unit that measures a current flowing through the arc electrode.
  • the voltage increase part which increases the output voltage of a power supply in steps until it determines with arc discharge having arisen in the electrode for arcs based on the measurement result of an electric current measurement part is provided.
  • the voltage control part which controls to reduce the output voltage of a power supply is provided.
  • a voltage application blocking unit that controls the arc electrode switch so as to block the application of the voltage between the arc electrode and the reference electrode, I have.
  • the voltage increasing unit gradually increases the output voltage of the power source until it is determined that arc discharge has occurred in the arc electrode based on the measurement result of the current measuring unit, and the voltage control unit performs the current measurement.
  • the output voltage of the power supply is controlled to be lowered, so that no arc discharge occurs between the discharge electrode and the reference electrode. Since voltage can be applied, ion generation efficiency can be increased.
  • the voltage application cutoff unit controls the arc electrode switch to cut off the voltage application between the arc electrode and the reference electrode when the voltage control unit controls the output voltage of the power supply to decrease.
  • the discharge between the arc electrode and the reference electrode can be prevented, and the ion generation efficiency can be further increased.
  • the ion generator includes a plurality of arc electrodes, and a selection switch that selects a voltage output from the power source to be applied to any one of the plurality of arc electrodes. It is equipped with. And a current measuring unit that measures a current flowing through the arc electrode selected by the selection switch.
  • the ion generator sequentially switches the arc electrode selected by the selection switch, and stores the current value of the current flowing through the arc electrode measured by the current measurement unit in the storage unit.
  • a storage control unit is provided.
  • the storage control unit includes a failure determination unit that determines whether there is a broken arc electrode based on the current value stored in the storage unit.
  • a limiting unit configured to limit the selection of the failed arc electrode by the selection switch when it is determined by the failure determination unit that there is a failed arc electrode.
  • the process of S100 corresponds to the current integrated value determination unit
  • the process of S104 corresponds to the distance control unit
  • the process of S204 corresponds to the arc determination unit
  • the process of S206 corresponds to the distance control unit
  • S300 The process of S400 corresponds to a resistance control unit
  • the processes of S502 and S504 correspond to a voltage increase unit
  • S506 corresponds to a voltage control unit.
  • S508 corresponds to a voltage application cut-off unit
  • S602 to S608 correspond to a storage control unit
  • S610 corresponds to a failure determination unit
  • S604 corresponds to a restriction unit.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

L'invention concerne un générateur d'ions qui comprend : une électrode de référence (30) ; une électrode de décharge (10) qui est disposée à une certaine distance de l'électrode de référence ; et une alimentation électrique (40) qui applique une tension entre l'électrode de décharge et l'électrode de référence, amenant ainsi l'électrode de décharge à générer une effluve électrique. Ce générateur d'ions produit des ions en amenant l'électrode de décharge à générer l'effluve électrique. Ce générateur d'ions est également pourvu d'une électrode (20) pour arc, qui est disposée à une certaine distance de l'électrode de référence, et amène de préférence l'électrode pour arc par rapport à l'électrode de décharge à générer une décharge en arc.
PCT/JP2018/018204 2017-05-15 2018-05-10 Générateur d'ions WO2018212077A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017-096627 2017-05-15
JP2017096627 2017-05-15
JP2018027838A JP6766834B2 (ja) 2017-05-15 2018-02-20 イオン発生装置
JP2018-027838 2018-02-20

Publications (1)

Publication Number Publication Date
WO2018212077A1 true WO2018212077A1 (fr) 2018-11-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114719387A (zh) * 2022-03-28 2022-07-08 青岛海信日立空调系统有限公司 空气处理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004178812A (ja) * 2002-09-30 2004-06-24 Sunx Ltd 除電装置
JP2004335134A (ja) * 2003-04-30 2004-11-25 Nippon Pachinko Buhin Kk イオン発生装置
JP2014121424A (ja) * 2012-12-21 2014-07-03 Panasonic Corp 放電ユニットおよびこれを用いた空気清浄装置
WO2017030078A1 (fr) * 2015-08-19 2017-02-23 株式会社日本自動車部品総合研究所 Dispositif de génération d'écoulement en jet, et système de génération d'écoulement en jet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004178812A (ja) * 2002-09-30 2004-06-24 Sunx Ltd 除電装置
JP2004335134A (ja) * 2003-04-30 2004-11-25 Nippon Pachinko Buhin Kk イオン発生装置
JP2014121424A (ja) * 2012-12-21 2014-07-03 Panasonic Corp 放電ユニットおよびこれを用いた空気清浄装置
WO2017030078A1 (fr) * 2015-08-19 2017-02-23 株式会社日本自動車部品総合研究所 Dispositif de génération d'écoulement en jet, et système de génération d'écoulement en jet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114719387A (zh) * 2022-03-28 2022-07-08 青岛海信日立空调系统有限公司 空气处理系统
CN114719387B (zh) * 2022-03-28 2023-06-20 青岛海信日立空调系统有限公司 空气处理系统

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