WO2010013570A1 - イオン発生装置および電気機器 - Google Patents
イオン発生装置および電気機器 Download PDFInfo
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- WO2010013570A1 WO2010013570A1 PCT/JP2009/061909 JP2009061909W WO2010013570A1 WO 2010013570 A1 WO2010013570 A1 WO 2010013570A1 JP 2009061909 W JP2009061909 W JP 2009061909W WO 2010013570 A1 WO2010013570 A1 WO 2010013570A1
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- Prior art keywords
- electrode
- induction electrode
- ion
- discharge
- tip
- Prior art date
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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
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
- B03C3/383—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames using radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/06—Ionising electrode being a needle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
Definitions
- the present invention relates to an ion generator and an electric device, and more particularly to an ion generator that includes an induction electrode and a discharge electrode having a needle-like tip and generates ions by discharge, and an electric device including the ion generator. is there.
- ion generators using the discharge phenomenon have been put into practical use. These ion generators usually include an ion generating element for generating ions, a high voltage transformer for supplying a high voltage to the ion generating element, a high voltage generating circuit for driving the high voltage transformer, a connector, and the like. And a power input unit.
- Examples of ion generators that have been put into practical use include metal wires, metal plates with sharp corners, needle-shaped metals, etc. as discharge electrodes, and ground potential metal plates or grids as induction electrodes (counter electrodes). Or the induction electrode as a ground, and the induction electrode is not particularly arranged.
- air serves as an insulator.
- this ion generating element when a high voltage is applied to the electrode, electric field concentration occurs at the tip of the electrode having a sharp angle, such as a needle shape, which becomes the discharge electrode, and the air in the immediate vicinity of the tip breaks down. In this method, the discharge phenomenon is obtained.
- An example of this type of ion generating element is an apparatus disclosed in, for example, Japanese Patent Laid-Open No. 10-199653.
- This publication discloses a device having a discharge electrode provided with a needle-like metal and a cylindrical electrode provided opposite to the discharge electrode, and taking out negative ions generated by corona discharge to the outside of the device. ing.
- Japanese Patent Laid-Open No. 2003-308947 describes a configuration in which the induction electrode is disposed rearward (side surface position) from the tip of the discharge electrode needle.
- the shape of the induction electrode may be a rod shape, a plate shape, a net shape, or the like, and that the arrangement is important rather than the shape of the induction electrode.
- Positive ions and negative ions generated by the discharge recombine and disappear at the moment they are generated, or ions of opposite polarity are attracted and neutralized by positively or negatively applied electrodes. It disappears by colliding with negative ions and neutralizing.
- the position of the discharge electrode and induction electrode should be fixed, the creeping discharge of the induction electrode and discharge electrode should be prevented, the tip of the discharge electrode should be protected, and the degree of freedom when mounting the device. It is to realize an ion generation device that integrates an ion generation element and a drive circuit in a thin and compact shape.
- the present invention has been made in view of the above problems, and one object of the present invention is to provide an ion generator capable of improving the ion emission efficiency and an electric device including the ion generator.
- Another object of the present invention is to provide an ion generator that can improve the ion emission efficiency and is suitable for compactness and thickness reduction, and an electric device equipped with the ion generator.
- One ion generator of the present invention is an ion generator for generating ions by discharge, and includes a discharge electrode and an induction electrode.
- the discharge electrode has a needle-like tip.
- the induction electrode has a flat plate portion, and the flat plate portion has a circular through hole. The tip of the discharge electrode passes through the through hole of the induction electrode and protrudes above the upper surface of the flat plate portion of the induction electrode.
- the tip of the discharge electrode passes through the circular through hole of the induction electrode, and the periphery of the discharge electrode is surrounded by the induction electrode. For this reason, it is possible to generate an electric field over the entire circumference of 360 degrees in a plan view from the needle-like tip of the discharge electrode toward the induction electrode, and it is possible to suppress a deviation in the directionality of the electric field distribution. Therefore, the deviation of the ion movement direction due to the deviation of the electric field distribution can be suppressed, the ion emission efficiency can be increased, and a stable discharge can be generated at the tip of the discharge electrode, thereby improving the ion generation efficiency. Can do.
- the tip of the discharge electrode passes through the through hole of the induction electrode and protrudes above the upper surface of the flat plate portion of the induction electrode. For this reason, the rate at which ions generated by the discharge at the tip of the discharge electrode are trapped by the induction electrode and neutralized can be reduced, and the amount of ions released can be increased.
- Another ion generation apparatus of the present invention is an ion generation apparatus for generating ions by discharge, and includes an ion generation element, a high voltage transformer, a high voltage generation circuit, a power input connector, and a case.
- the ion generating element includes a discharge electrode having a needle-like tip and an induction electrode having a flat plate portion and a circular through hole in the flat plate portion.
- the high voltage transformer is for supplying a high voltage to the ion generating element.
- the high voltage generation circuit is for driving a high voltage transformer.
- the power input connector is electrically connected to the high voltage generation circuit.
- the case has an ion generating element, a high voltage transformer, a high voltage generating circuit, and a power input connector arranged therein.
- the tip of the discharge electrode penetrates the through hole of the induction electrode and protrudes above the upper surface of the flat plate portion of the induction electrode.
- Each of the ion generating element, the high voltage transformer, the high voltage generating circuit, and the power input connector is arranged in a planar manner and is integrally arranged in the case.
- the tip of the discharge electrode passes through the circular through hole of the induction electrode, and the periphery of the discharge electrode is surrounded by the induction electrode. For this reason, it is possible to generate an electric field over the entire circumference of 360 degrees in a plan view from the needle-like tip of the discharge electrode toward the induction electrode, and it is possible to suppress a deviation in the directionality of the electric field distribution. Therefore, the deviation of the ion movement direction due to the deviation of the electric field distribution can be suppressed, the ion emission efficiency can be increased, and a stable discharge can be generated at the tip of the discharge electrode, thereby improving the ion generation efficiency. Can do.
- the tip of the discharge electrode passes through the through hole of the induction electrode and protrudes above the upper surface of the flat plate portion of the induction electrode. For this reason, the rate at which ions generated by the discharge at the tip of the discharge electrode are trapped by the induction electrode and neutralized can be reduced, and the amount of ions released can be increased.
- the ion generator, high voltage transformer, high voltage generator, and power input connector are arranged in a plane and integrated with each other in the case, so that the ion generator can be made thinner and more compact. Is possible.
- the one and other ion generators described above further include a case in which a discharge electrode and an induction electrode are arranged inside.
- the case has a top plate in which a hole for ion emission leading to the through hole of the induction electrode is formed.
- the tip of the discharge electrode is disposed so as not to protrude above the top surface of the top plate.
- the length of the tip of the discharge electrode protruding above the upper surface of the plate portion of the induction electrode is smaller than the radius of the through hole.
- the one and other ion generators described above further include a support substrate that supports the induction electrode.
- the induction electrode has a bent portion that is bent from the flat plate portion and supported by the support substrate.
- the induction electrode is supported on the support substrate so that a gap is formed between the flat plate portion of the induction electrode and the support substrate.
- An electric device is a blower for sending any of the ion generators described above and at least one of positive ions and negative ions generated by the ion generators to the outside of the electric device in an air flow. Department.
- ions generated by the ion generator can be sent on the airflow by the blower, so that, for example, ions can be released to the outside in the air conditioner, and in the refrigerator equipment. Ions can be released inside or outside.
- the tip of the discharge electrode penetrates the through hole of the induction electrode and protrudes above the upper surface of the induction electrode, the ion emission efficiency can be improved.
- FIG. 1 is a schematic plan view schematically showing a configuration of an ion generator according to an embodiment of the present invention, and is a partially broken plan view showing a part of a top plate of a case in a broken view and a perspective view of a mold resin. It is.
- FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1. It is a disassembled perspective view which shows the structure of the ion generating element shown to FIG. It is an assembly perspective view which shows the structure of the ion generating element shown to FIG. It is a functional block diagram of the ion generator in one embodiment of the present invention, and is a figure showing electrical connection of each functional element.
- FIG. 1 It is a perspective view which shows roughly the structure of the air cleaner using the ion generator shown in FIG. 1 and FIG. It is an exploded view of the air cleaner which shows a mode that the ion generator was arrange
- (A) is sectional drawing for demonstrating the electric field which can be formed between the discharge electrode and induction
- (B) is a figure. It is the figure seen from the arrow S1 direction of 8 (A).
- (A) is sectional drawing for demonstrating the electric field formed between the discharge electrode and induction
- (B) is the arrow S2 direction of FIG. 9 (A). It is the figure seen from.
- (A) is a schematic diagram for explaining the behavior of ions when the needle-like tip of the discharge electrode is deeper than the induction electrode, and (B) is the needle-like tip of the discharge electrode than the induction electrode. It is a schematic diagram for demonstrating the behavior of the ion in the case of protruding.
- (A) is a schematic sectional drawing which shows the structure of the ion generating element from which the protrusion length of a discharge electrode differs, and is a figure which shows the state which the front-end
- (B) is discharge It is a figure which shows the state where the protrusion length from the induction electrode of an electrode is larger than the radius of a through-hole
- (C) is a figure which shows the state where the protrusion length from the induction electrode of a discharge electrode is smaller than the radius of a through-hole.
- (A) is a schematic sectional drawing of the ion generating element which shows a state in case the distance e between the flat plate part of an induction electrode and a support substrate is 0,
- (B) shows a state in case there exists the distance e. It is a schematic sectional drawing of an ion generating element.
- FIG. 1 is a schematic plan view schematically showing a configuration of an ion generator according to an embodiment of the present invention, in which a part of a top plate of a case is cut away and a part is shown through a mold resin.
- FIG. 2 is a schematic sectional view taken along line II-II in FIG. 3 and 4 are an exploded perspective view and an assembled perspective view showing the configuration of the ion generating element used in the ion generating apparatus shown in FIGS.
- an ion generator 30 of the present embodiment includes an outer case 21, an ion generator 10a for generating positive ions, an ion generator 10b for generating negative ions, a high-voltage transformer 11, High voltage circuits 12a and 12b, a power supply circuit (high voltage generation circuit) 23, and a power input connector 22 are mainly included.
- the ion generating element 10a is arranged on one end side (left side in FIG. 1) in the outer case 21 and the ion generating element 10b is arranged on the other end side (right side in FIG. 1) in the outer case 21. Further, the ion generating elements 10a and 10b, the high voltage transformer 11, the high voltage circuits 12a and 12b, the power supply circuit 23 and the power input connector 22 are integrally disposed in the outer case 21, and a space between the ion generating elements 10a and 10b. If the high-voltage transformer 11, the high-voltage circuits 12a and 12b, the power supply circuit 23, and the power input connector 22 are arranged, the arrangement efficiency is good and the ion generator 30 can be made compact.
- the ion generating device 30 is thinned by planarly arranging the ion generating elements 10a and 10b, the high voltage transformer 11, the high voltage circuits 12a and 12b, the power circuit 23, and the power input connector 22 in the outer case 21. It becomes possible.
- Both the positive high voltage circuit 12 a and the negative high voltage circuit 12 b are supported on the same substrate 14.
- the positive high voltage circuit 12a is arranged on one end side (left side in FIG. 1) in the case 21 so as to be adjacent to the ion generating element 10a for generating positive ions.
- the negative high voltage circuit 12b is arranged on the other end side (right side in FIG. 1) in the case 21 so as to be adjacent to the ion generating element 10b for generating negative ions.
- a part of the substrate 14 supporting the high voltage circuits 12a and 12b is located between the ion generating elements 10a and 10b. Note that the substrate supporting the positive high voltage circuit 12a and the substrate supporting the negative high voltage circuit 12b may be separated from each other.
- each of ion generating elements 10a and 10b is for generating positive ions and negative ions by corona discharge, for example, induction electrode 1, discharge electrode 2, and support substrate. 3.
- the induction electrode 1 is made of an integral metal plate and has a plurality of (for example, two) substantially circular through-holes 1 a provided in the flat plate portion corresponding to the number of discharge electrodes 2. This through hole 1a can generate a 360-degree uniform electric field at the tip of the discharge electrode 2 to generate a stable corona discharge.
- the flat plate portion of the induction electrode 1 is made of a perforated sheet metal, and the flat plate portion other than the through hole 1a has a uniform thickness.
- the induction electrode 1 has, for example, bent portions 1b obtained by bending a part of the metal plate at a substantially right angle with respect to the flat plate portion at both ends.
- the bent portion 1b has a wide support portion and a narrow insertion portion. One end of the support portion is connected to the flat plate portion, and the other end is connected to the insertion portion.
- the discharge electrode 2 has a needle-like tip.
- the support substrate 3 has a through hole 3a for inserting the discharge electrode 2 and a through hole 3b for inserting the insertion portion of the bent portion 1b.
- the needle-like discharge electrode 2 is supported by the support substrate 3 in a state of being inserted or press-fitted into the through hole 3 a and penetrating the support substrate 3. Thereby, one end of the needle-like shape of the discharge electrode 2 protrudes to the front surface side (ion generation part side) of the support substrate 3, and the other end protrudes to the back surface side (solder surface side) of the support substrate 3, Lead wires and wiring patterns can be electrically connected by solder (not shown).
- the insertion portion of the induction electrode 1 is supported by the support substrate 3 in a state of being inserted into the through hole 3b and penetrating the support substrate 3.
- a lead wire or a wiring pattern can be electrically connected to the tip of the insertion portion protruding to the back side of the support substrate 3 by solder (not shown).
- the discharge electrode 2 has a needle-like tip positioned substantially at the center of a substantially circular through hole 1a in a plan view shown in FIG. Thereby, the distance between the needle-like tip of the discharge electrode 2 and the outer peripheral portion of the circular through hole 1a is equal to the entire circumference of the through hole 1a.
- the discharge electrode 2 of the ion generation element 10a for generating positive ions serves as a positive electrode discharge electrode, and constitutes a positive ion generation part (positive electrode pair) together with the induction electrode 1 of the ion generation element 10a.
- the discharge electrode 2 of the ion generation element 10b for generating negative ions is a negative electrode discharge electrode, and constitutes a negative ion generation part (negative electrode pair) together with the induction electrode 1 of the ion generation element 10b.
- a common induction electrode 1 is provided for a plurality of discharge electrodes 2 for generating positive or negative ions of the same polarity.
- a common induction electrode 1 is provided for two positive electrode discharge electrodes 2, and the induction electrode 1 includes the positive electrode discharge electrode 2.
- Two through holes 1a are provided corresponding to the number.
- the ion generating element 10a for generating positive ions is configured to be able to generate positive ions by a plurality (for example, two) of positive ion generating units.
- the ion generating element 10b for generating negative ions for example, a common induction electrode 1 is provided for the two negative electrode discharge electrodes 2, and the induction electrode 1 corresponds to the number of the negative electrode discharge electrodes 2. Two through holes 1a are provided.
- the ion generating element 10b for generating negative ions is configured to generate negative ions by a plurality of (for example, two) negative ion generating units.
- One ion generating element may have one discharge electrode 2 or may have three or more discharge electrodes 2.
- the needle-like tip of discharge electrode 2 penetrates through hole 1 a of induction electrode 1 and protrudes above upper surface 1 c of the flat plate portion of induction electrode 1.
- a length f at which the needle-like tip of the discharge electrode 2 protrudes above the upper surface 1c of the flat plate portion of the induction electrode 1 is smaller than the radius r of the through hole 1a.
- the needle-like tip of the discharge electrode 2 is arranged so as not to protrude above the top surface of the top plate 21b of the outer case 21, and the needle-like tip of the discharge electrode 2 is arranged from the top surface of the top plate 21b. For example, it is located at a location that is recessed by a distance g. Thereby, it is suppressed that the ion generation performance of the discharge electrode 2 falls by mechanical impact, and it can prevent that a hand touches the discharge electrode 2 used as a high voltage part directly, and can prevent an electric shock.
- the induction electrode 1 is supported on the support substrate 3 so that a gap with a dimension e is generated between the flat plate portion of the induction electrode 1 and the support substrate 3. Thereby, the occurrence of creeping discharge between the induction electrode 1 and the discharge electrode 2 along the surface of the support substrate 3 can be suppressed.
- a space of a dimension h is provided on the solder surface side of the support substrate 3 so that the soldering part of the component does not contact the outer case 21.
- the solder surface side of the support substrate 3 (the space of the dimension h in FIG. 2) is molded with a mold resin (for example, epoxy resin) 31.
- a mold resin for example, epoxy resin
- the high voltage transformer, the high voltage circuit, and the power supply circuit are also molded with a molding resin.
- an ion emission hole 21 a is provided in the top plate 21 b of the outer case 21.
- an electric field is generated from the needle-shaped tip of the discharge electrode 2 toward the induction electrode 1, and the electric field spreads outside the ion emission hole 21 a.
- positive and negative ions can be released into the space outside the ion generator 30 by being put on the air.
- the overall size of the ion generator 30 is as small and thin as possible, which is advantageous for mounting on a wide variety of electrical devices. Therefore, the thickness T (FIG. 2) of the ion generator 30 is preferably 10 mm or less, and the area L ⁇ W (FIG. 1) is preferably about 100 mm ⁇ 20 mm to 150 mm ⁇ 40 mm.
- FIG. 5 is a functional block diagram of the ion generator according to one embodiment of the present invention, and is a diagram showing electrical connection of each functional element.
- the ion generator 30 includes the outer case 21, the ion generating elements 10 a and 10 b, the high voltage transformer 11, the high voltage circuits 12 a and 12 b, the power input connector 22, And a power supply circuit 23. Note that a part of the power input connector 22 is disposed in the outer case 21, and the other part is exposed to the outside of the outer case 21, so that a power source can be connected to the connector from the outside.
- the power input connector 22 is a part that receives supply of DC power or commercial AC power as input power.
- the power input connector 22 is electrically connected to the power circuit 23.
- the power supply circuit 23 is electrically connected to the primary side of the high voltage transformer 11.
- the high-voltage transformer 11 boosts the voltage input to the primary side and outputs it to the secondary side.
- One of the secondary sides of the high-voltage transformer 11 is electrically connected to the induction electrode 1 of the ion generating elements 10a and 10b.
- the other side of the secondary side of the high voltage transformer 11 is electrically connected to the positive electrode discharge electrode 2 of the ion generating element 10a for generating positive ions through a positive high voltage circuit 12a, and is negatively connected through a negative high voltage circuit 12b. It is electrically connected to the negative electrode discharge electrode 2 of the ion generating element 10b for generating ions.
- the induction electrodes 1 of the ion generating elements 10a and 10b are electrically connected to each other and have the same
- the positive high voltage circuit 12 a applies a positive high voltage to the induction electrode 1 to the positive electrode 2 and applies a negative high voltage to the induction electrode 1 to the negative electrode 2. It is configured. Thereby, positive and negative bipolar ions can be generated.
- the above-described ion generator 30 can emit unipolar ions, but in the present embodiment, it is premised on that positive ions and negative ions are emitted.
- Positive ions are generated by generating a positive corona discharge at the tip of the positive electrode discharge electrode 2
- negative ions are generated by generating a negative corona discharge at the tip of the negative electrode discharge electrode 2.
- the applied waveform is not particularly limited here, and is a high voltage such as a direct current, an alternating current waveform biased positively or negatively, or a pulse waveform biased positively or negatively.
- the high voltage waveform may be any form such as an alternating current, a direct current, a pulse, and a combined waveform thereof, and means a voltage that generates an electric field strength that can generate a discharge phenomenon.
- a voltage region that is sufficient to generate a discharge and that generates a predetermined ion species is selected as the voltage value.
- the positive ion intended by the inventor is a cluster ion in which a plurality of water molecules are attached around a hydrogen ion (H + ), and is expressed as H + (H 2 O) m (m is a natural number).
- Negative ions are cluster ions in which a plurality of water molecules are attached around oxygen ions (O 2 ⁇ ), and are expressed as O 2 ⁇ (H 2 O) n (n is a natural number).
- H + (H 2 O) m (m is a natural number) that is a positive ion in the air and O 2 ⁇ (H 2 O) n (n is a natural number) that are negative ions are generated in substantially the same amount.
- Both ions attach to and surround the fungi and viruses floating in the air, and the floating fungi and the like are removed by the action of hydroxyl radicals (.OH) of the active species generated at that time. Is possible.
- a fan mounted on the electrical equipment is used for blowing air.
- the air purifier purifies the air taken in from the air inlet through a filter and then supplies the air from the outlet through the fan casing.
- FIG. 6 is a perspective view schematically showing a configuration of an air cleaner using the ion generator shown in FIGS.
- FIG. 7 is an exploded view of the air cleaner showing an ion generator arranged in the air cleaner shown in FIG.
- the air purifier 60 has a front panel 61 and a main body 62.
- a blow-out port 63 is provided at the rear upper part of the main body 62, and clean air containing ions is supplied into the room from the blow-out port 63.
- An air intake 64 is formed at the center of the main body 62. The air taken in from the air intake port 64 on the front surface of the air cleaner 60 is cleaned by passing through a filter (not shown). The purified air is supplied to the outside from the outlet 63 through the fan casing 65.
- the ion generator 30 shown in FIG. 1 and FIG. 2 is attached to a part of the fan casing 65 that forms a passage of purified air.
- the ion generator 30 is arranged so that ions can be discharged from the hole 21a serving as the ion discharge portion into the air flow.
- positions such as a position P1 and a position P2 that are relatively close to the air outlet 63 in the air passage route are considered. In this way, by allowing the air to pass through the ion release hole 21a of the ion generator 30, ions can be supplied to the outside together with clean air from the outlet 63.
- the ions generated in the ion generator 30 can be sent on an air current by a blower (air passage route), so that the ions are supplied together with clean air to the outside. Can be released.
- the air purifier can have an ion generation function.
- the ion generator 30 of this Embodiment is thin, even if it is a case where it mounts in the above electric devices, it does not interfere with ventilation and therefore suppresses noise generation and air volume reduction. It can also be applied to a wide variety of products.
- an air purifier has been described as an example of an electric device.
- the electric device includes an air conditioner (air conditioner), a refrigerator, A vacuum cleaner, a humidifier, a dehumidifier, etc. may be sufficient, and what is necessary is just an electric equipment which has a ventilation part for carrying an ion on airflow.
- the tip of the discharge electrode 2 passes through the circular through hole 1 a of the induction electrode 1, and the periphery (the entire outer peripheral surface) of the discharge electrode 2 is surrounded by the induction electrode 1. Therefore, ion emission efficiency and generation efficiency can be increased. This will be described below.
- FIGS. 8A and 8B are schematic diagrams for explaining the electric field generated between the discharge electrode and the induction electrode of the corona discharge mechanism disclosed in Patent Document 2 (Japanese Patent Laid-Open No. 2003-308947). is there. 8A is a cross-sectional view, and FIG. 8B is a view as seen from the direction of arrow S1 in FIG. 8A.
- the induction electrode 101 is disposed on the side surface behind the needle-like tip of the discharge electrode 102, so the needle of the discharge electrode 102 An electric field is generated from the leading end toward the induction electrode 101 on the rear side surface.
- the directionality of the electric field distribution can be biased with respect to the discharge electrode 102, and the bias of the electric field can bias the ion movement direction, which can reduce the ion emission efficiency and reduce the tip of the discharge electrode 102.
- Discharge becomes unstable and ion generation efficiency decreases.
- FIGS. 9A and 9B are schematic diagrams for explaining the electric field formed between the discharge electrode and the induction electrode of the ion generating element in one embodiment of the present invention. Note that FIG. 9A is a cross-sectional view, and FIG. 9B is a diagram viewed from the direction of arrow S2 in FIG. 9A. FIG. 9A is a schematic cross-sectional view taken along line IX-IX in FIG. 9B.
- the tip of discharge electrode 2 passes through circular through hole 1a of induction electrode 1, and around discharge electrode 2 (outer periphery) The entire circumference of the surface is surrounded by the induction electrode 1. For this reason, an electric field is generated over the entire circumference of 360 degrees in plan view from the needle-like tip of the discharge electrode 2 toward the induction electrode 1.
- inclination of the directionality of electric field distribution can be suppressed. Therefore, the deviation of the ion movement direction due to the deviation of the electric field distribution can be suppressed, the ion emission efficiency can be increased, and a stable discharge can be generated at the tip of the discharge electrode 2 to improve the ion generation efficiency. be able to.
- the distance between the needle-like tip of the discharge electrode 2 and the outer periphery of the circular through-hole 1a passes through. It becomes equidistant in the perimeter of the hole 1a.
- the electric field generated between the needle-shaped tip of the discharge electrode 2 and the induction electrode 1 can be made uniform by 360 degrees, and the bias of the electric field distribution can be further suppressed.
- the ion emission efficiency can be increased. This will be described below.
- FIG. 10 is a schematic diagram (A) for explaining the behavior of ions when the needle-like tip of the discharge electrode is deeper than the induction electrode, and the needle-like tip of the discharge electrode protrudes from the induction electrode. It is a schematic diagram (B) for demonstrating the behavior of the ion in case of being.
- the needle-like tip of discharge electrode 2 protrudes upward by a distance f with respect to the upper surface of induction electrode 1. For this reason, even if the ion generated by the discharge does not pass through the through-hole 1a of the induction electrode 1, it can be put on the airflow of the air blown in the direction indicated by the arrow in the figure. For this reason, positive or negative ions generated in the vicinity of the needle-like tip of the discharge electrode 2 are attracted to the induction electrode 1 side by the force of the electric field, but are not captured by the induction electrode 1 by riding on the wind by the force of blowing air. Are released into space.
- positive or negative ions before positive or negative ions are attracted to the induction electrode 1 and neutralized, they can be discharged into the space by being blown, so that the amount of ions released into the space is increased and the space of the ions is increased.
- the release efficiency can be improved.
- the inventor also examined the length of the needle-like tip of the discharge electrode 2 protruding from the top surface 1c of the induction electrode 1 (hereinafter referred to as “projection length”). The contents and results will be described below.
- the result of FIG. 11 is that the protrusion length is changed in three stages of “large”, “medium”, and “small”, and the radius r of the through-hole 1a is also three stages of “large”, “medium”, and “small”. It shows the ion concentration ratio at a certain point in the space when changed by.
- the relationship between the projection length f and the radius r of the through hole 1a is summarized in a table form as shown in FIG. Referring to FIG. 12, the discharge at the tip of the discharge electrode is the strongest when the radius r of the through hole 1a is small and the protrusion length f is small (upper left direction in the table). If both the radius r and the protrusion length f of the through hole 1a are too small, the discharge becomes too strong and spark discharge may occur. Conversely, the combination of the through-hole 1a having a large radius r and a large protruding length f (lower right in the table) has the weakest discharge at the tip of the discharge electrode. If both the radius r and the protruding length f of the through hole 1a are too large, there may be no discharge.
- the fact that the radius r of the through hole 1a is increased is related to the intensity of discharge at the tip of the discharge electrode 2 as described above because the distance between the discharge electrode 2 and the induction electrode 1 is increased. At the same time, the amount of ions generated at the tip of the discharge electrode 2 is captured by the induction electrode 1 is also reduced.
- the fact that the protruding length f is increased (downward in the table) is that the distance between the tip of the discharge electrode 2 and the induction electrode 1 is increased, and thus the intensity of the discharge at the tip of the discharge electrode 2 as described above. In addition, the amount of ions generated at the tip of the discharge electrode 2 is captured by the induction electrode 1 is also reduced.
- the protrusion length f and the radius r of the through hole 1a are both effective for increasing the ion concentration.
- the radius r of the through hole 1a is large, the amount of ions captured by the induction electrode 1 is also small. Therefore, when the radius r is large, the effect of increasing the protrusion length f is small.
- the ion concentration tends to increase when the protruding length f is increased.
- the needle-like tip of the discharge electrode 2 jumps out of the outer case 21 of the ion generator 30 as shown in FIG. In this case, the ion generation performance of the discharge electrode 2 decreases due to mechanical impact. Therefore, it is preferable that the needle-like tip of the discharge electrode 2 protrudes with respect to the surface of the induction electrode 1 and does not protrude from the upper surface of the top plate 21 b of the outer case 21 of the ion generator 30.
- the protrusion length f is shorter than the radius r of the through-hole 1a.
- the discharge phenomenon is simply determined by the applied voltage and the distance between the electrodes. For this reason, if there is no acute angle portion at the tip of the discharge electrode 2, discharge occurs at the shortest distance between the induction electrode 1 and the discharge electrode 2. However, when the tip of the discharge electrode 2 is needle-shaped and sharp, the electric field concentrates on the tip of the discharge electrode 2 and corona discharge occurs between the tip and the induction electrode 1. That is, by making the tip of the discharge electrode 2 an acute angle, the potential gradient (electric field strength) at the tip becomes stronger, so even if the distance between the tip of the discharge electrode 2 and the induction electrode 1 is not the shortest distance, Corona discharge can be generated between the tip and the induction electrode 1.
- the inventor when the tip of the discharge electrode 2 has a needle-like shape and has an acute angle portion, the inventor has a needle-like tip of the discharge electrode 2 as long as the protruding length f is shorter than the radius r of the through hole 1a. It has been found that corona discharge occurs between the induction electrode 1 and the induction electrode 1. For this reason, corona discharge can be generated between the needle-shaped tip of the discharge electrode 2 and the induction electrode 1 by making the protrusion length f shorter than the radius r of the through hole 1a. Generation of electric discharge between the body portion and the induction electrode 1 can be prevented.
- the protruding length is, for example, 0.5 mm to 4.0 mm, and preferably 1 mm to 2 mm.
- the diameter of the through hole 1a of the induction electrode 1 is, for example, ⁇ 12 mm to ⁇ 13 mm (the radius of the through hole 1a is 6 mm to 6.5 mm).
- the present inventor examined the distance e (see FIG. 2) between the flat plate portion of the induction electrode 1 and the support substrate 3. The contents and results will be described below.
- FIG. 14 is a schematic cross-sectional view of the ion generating element showing a state when the distance e between the flat plate portion of the induction electrode and the support substrate is 0 (A) and when the distance e exists (B). .
- the induction electrode 1 and the discharge electrode 2 In order to arrange the induction electrode 1 and the discharge electrode 2 on the same support substrate 3, project the tip of the discharge electrode 2 above the upper surface 1c of the flat plate portion of the induction electrode 1, and make the ion generator 30 thin. The most efficient is that the induction electrode 1 is brought into close contact with the surface of the support substrate 3 as shown in FIG.
- the creepage distance j1 along the surface of the support substrate 3 between the discharge electrode 2 and the induction electrode 1 is substantially equal to the radius r of the through hole 1a. Since a high voltage is applied between the discharge electrode 2 and the induction electrode 1, there is a concern about creeping discharge if the creeping distance j1 is small. For this reason, it is necessary to secure a sufficient distance between the discharge electrode 2 and the induction electrode 1 arranged on the same support substrate 3.
- bent portions 1b are provided at both ends of the induction electrode 1, and the induction electrode 1 is supported by the support substrate 3 at the bent portions 1b.
- a gap of dimension e is secured between the flat plate portion and the support substrate 3.
- the creeping distance j2 along the surface of the support substrate 3 between the discharge electrode 2 and the induction electrode 1 is larger than the distance j1 shown in FIG. In this way, by always ensuring a certain distance between the flat plate portion of the induction electrode 1 and the support substrate 3, unnecessary creeping discharge can be suppressed.
- the dimension e of the air gap is, for example, 0.5 mm to 2.0 mm.
- the induction electrode 1 and the discharge electrode 2 are arranged on the same support substrate 3, the deviation in the height direction is minimized while restricting the planar positional deviation between the induction electrode 1 and the discharge electrode 2. be able to. Thereby, the error factor of the positional relationship between the induction electrode 1 and the discharge electrode 2 can be reduced.
- the present invention can be applied particularly advantageously to an ion generator that includes an induction electrode and a discharge electrode having a needle-like tip, and generates ions by discharge, and an electrical apparatus including the ion generator.
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Abstract
Description
図1は本発明の一実施の形態におけるイオン発生装置の構成を概略的に示す概略平面図であって、ケースの天板の一部を破断して示すとともにモールド樹脂を透視して示す一部破断平面図である。また図2は図1のII-II線に沿う概略断面図である。また図3および図4は図1、2に示すイオン発生装置に用いられるイオン発生素子の構成を示す分解斜視図および組立て斜視図である。
図5は、本発明の一実施の形態におけるイオン発生装置の機能ブロック図であり、各機能素子の電気的接続を示す図である。図5を参照して、イオン発生装置30は、上述したように、外装ケース21と、イオン発生素子10a、10bと、高圧トランス11と、高電圧回路12a、12bと、電源入力コネクタ22と、電源回路23とを有している。なお、電源入力コネクタ22は一部が外装ケース21内に配置されており、また他の一部が外装ケース21の外部に露出しており、外部から電源をコネクタ接続できる構造となっている。
まず本実施の形態によれば、放電電極2の先端が誘導電極1の円形の貫通孔1aを貫通しており、放電電極2の周囲(外周面全周)が誘導電極1により取り囲まれているため、イオンの放出効率および発生効率を高めることができる。以下、そのことを説明する。
Claims (10)
- 放電によりイオンを発生させるためのイオン発生装置(30)であって、
針状の先端を有する放電電極(2)と、
平板部を有し、かつ前記平板部に円形の貫通孔(1a)を有する誘導電極(1)とを備え、
前記放電電極の前記先端が前記誘導電極の前記貫通孔を貫通して前記誘導電極の前記平板部の上面(1c)よりも上側に突出している、イオン発生装置。 - 前記放電電極(2)と前記誘導電極(1)とを内部に配置されたケース(21)をさらに備え、
前記ケースは、前記誘導電極の前記貫通孔(1a)に通じるイオン放出用の孔(21a)が形成された天板(21b)を有し、
前記放電電極の前記先端は、前記天板の天面よりも上側には突出しないように配置されている、請求の範囲第1項に記載のイオン発生装置。 - 前記放電電極(2)の前記先端が前記誘導電極(1)の前記平板部の前記上面(1c)よりも上側に突出する長さは、前記貫通孔(1a)の半径よりも小さい、請求の範囲第1項に記載のイオン発生装置。
- 前記誘導電極(1)を支持する支持基板(3)をさらに備え、
前記誘導電極は、前記平板部から屈曲されて前記支持基板に支持された屈曲部(1b)を有し、
前記誘導電極の前記平板部と前記支持基板との間には空隙が生じるように前記誘導電極は前記支持基板に支持されている、請求の範囲第1項に記載のイオン発生装置。 - 請求の範囲第1項に記載のイオン発生装置(30)と、
前記イオン発生装置で生じた正イオンおよび負イオンの少なくともいずれかを送風気流に乗せて電気機器(60)の外部に送るための送風部とを備えた、電気機器。 - 放電によりイオンを発生させるためのイオン発生装置(30)であって、
針状の先端を有する放電電極(2)と、平板部を有し、かつ前記平板部に円形の貫通孔(1a)を有する誘導電極(1)とを含むイオン発生素子(10a,10b)と、
前記イオン発生素子に高電圧を供給するための高圧トランス(11)と、
前記高圧トランスを駆動するための高電圧発生回路(23)と、
前記高電圧発生回路に電気的に接続される電源入力コネクタ(22)と、
前記イオン発生素子、前記高圧トランス、前記高電圧発生回路および前記電源入力コネクタのそれぞれを内部に配置されたケース(21)とを備え、
前記放電電極の前記先端が前記誘導電極の前記貫通孔を貫通して前記誘導電極の前記平板部の上面(1c)よりも上側に突出しており、
前記イオン発生素子、前記高圧トランス、前記高電圧発生回路および前記電源入力コネクタのそれぞれが互いに平面的に配置され、かつ前記ケース内に一体化して配置されている、イオン発生装置。 - 前記ケース(21)には、前記放電電極(2)と前記誘導電極(1)とが内部に配置されており、
前記ケースは、前記誘導電極の前記貫通孔(1a)に通じるイオン放出用の孔(21a)が形成された天板(21b)を有し、
前記放電電極の前記先端は、前記天板の天面よりも上側には突出しないように配置されている、請求の範囲第6項に記載のイオン発生装置。 - 前記放電電極(2)の前記先端が前記誘導電極(1)の前記平板部の前記上面(1c)よりも上側に突出する長さは、前記貫通孔(1a)の半径よりも小さい、請求の範囲第6項に記載のイオン発生装置。
- 前記誘導電極(1)を支持する支持基板(3)をさらに備え、
前記誘導電極は、前記平板部から屈曲されて前記支持基板に支持された屈曲部(1b)を有し、
前記誘導電極の前記平板部と前記支持基板との間には空隙が生じるように前記誘導電極は前記支持基板に支持されている、請求の範囲第6項に記載のイオン発生装置。 - 請求の範囲第6項に記載のイオン発生装置(30)と、
前記イオン発生装置で生じた正イオンおよび負イオンの少なくともいずれかを送風気流に乗せて電気機器(60)の外部に送るための送風部とを備えた、電気機器。
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US13/002,752 US8624476B2 (en) | 2008-07-31 | 2009-06-30 | Ion-generating device and electrical apparatus |
KR1020117004433A KR101245433B1 (ko) | 2008-07-31 | 2009-06-30 | 이온 발생 장치 및 전기 기기 |
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JP2008053000A (ja) * | 2006-08-23 | 2008-03-06 | Sharp Corp | 放電電極、誘導電極、イオン発生素子、イオン発生装置および電気機器 |
JP2008123917A (ja) * | 2006-11-14 | 2008-05-29 | Sharp Corp | イオン発生装置及びイオン発生装置の製造方法 |
Cited By (2)
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US20140077701A1 (en) * | 2011-05-18 | 2014-03-20 | Sharp Kabushiki Kaisha | Ion generation apparatus and electric equipment using the same |
CN104006456A (zh) * | 2014-06-10 | 2014-08-27 | 宁波市蕾蒙电器有限公司 | 一种室内空气净化器 |
Also Published As
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JP4747328B2 (ja) | 2011-08-17 |
US8624476B2 (en) | 2014-01-07 |
RU2480878C2 (ru) | 2013-04-27 |
KR20110050473A (ko) | 2011-05-13 |
CN201360100Y (zh) | 2009-12-09 |
US20110115362A1 (en) | 2011-05-19 |
KR101245433B1 (ko) | 2013-03-19 |
MY147302A (en) | 2012-11-30 |
RU2011107318A (ru) | 2012-09-10 |
JP2010040173A (ja) | 2010-02-18 |
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