JP6581618B2 - Discharge device and electrical equipment using the same - Google Patents

Description

  The present invention relates to a discharge device and an electric device using the same, and more particularly to a discharge device including a discharge electrode and an electric device using the same.

  Conventionally, an ion generator includes a substrate, two sets of induction electrodes and needle electrodes. Each induction electrode is formed in an annular shape and mounted on the surface of the substrate. The base end portion of each needle-like electrode is provided on the substrate, and the tip end portion thereof is disposed at the center portion of the corresponding induction electrode. When a positive high voltage is applied between one pair of needle electrodes and the induction electrode, corona discharge occurs at the tip of the needle electrodes, and positive ions are generated. When a negative high voltage is applied between the other pair of needle electrodes and the induction electrode, corona discharge is generated at the tip of the needle electrodes, and negative ions are generated. The generated positive ions and negative ions are sent out indoors by a blower, surround mold fungi and viruses floating in the air, and decompose them (for example, see Patent Document 1).

JP 2010-044917 A

  By the way, when a substrate on which an induction electrode and a needle-like electrode are mounted is housed in a housing and an ion generator is commercialized, it is necessary to efficiently release ions generated at the tip of the needle-like electrode to the outside of the housing. It is also necessary to prevent the user from getting injured by touching the tip of the needle electrode.

  Therefore, a main object of the present invention is to provide a discharge device that has a high discharge effect and is safe, and an electric device using the discharge device.

The discharge device according to the present invention includes a discharge electrode and a conductive cap that covers the tip of the discharge electrode.

Preferably, the cap part is made of resin and is detachably attached to the discharge electrode.

  Preferably, the cap portion has a fitting portion into which one end is a pointed portion and the other end is fitted with the tip of the discharge electrode.

  Moreover, the electric equipment which concerns on this invention is provided with the said discharge device.

Preferably, a duct for sending wind in a predetermined direction is further provided, and the tip of the cap part is provided so as to be exposed in the duct.

  As described above, according to the present invention, the discharge effect is high and the user can be prevented from being injured.

It is sectional drawing which shows the structure of the ion generator by Embodiment 1 of this invention. It is a perspective view of the ion generator shown in FIG. It is a perspective view which shows the state which removed the cover member from the ion generator shown in FIG. It is a circuit diagram which shows the structure of the ion generator shown in FIG. It is sectional drawing which shows the structure of the ion sending apparatus using the ion generator shown in FIG. It is sectional drawing which shows the structure of the ion generator by Embodiment 2 of this invention. It is sectional drawing which shows the structure of the ion generator by Embodiment 3 of this invention. It is sectional drawing which shows the structure of the ion generator by Embodiment 4 of this invention.

[Embodiment 1]
Embodiment 1 of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.

  FIG. 1A is a top view of an ion generator according to Embodiment 1 of the present invention, and FIG. 1B is a cross-sectional view taken along line AA in FIG. 2 is a perspective view of the ion generator, and FIG. 3 is a perspective view showing a state in which the lid member 11 is removed from the ion generator shown in FIG.

  1 to 3, this ion generator includes two metal cores 1 and 2, a cap portion 7 attached to the metal core 1 for generating positive ions, and attached to the metal core 2 for negative ions. A cap portion 8 for generating, an annular induction electrode 3 for forming an electric field between the cap portion 7, an annular induction electrode 4 for forming an electric field between the cap portion 8, and 2 A plurality of rectangular printed circuit boards 5 and 6.

  The printed boards 5 and 6 are arranged in parallel in the vertical direction in FIG. The induction electrode 3 is formed on the surface of one end portion in the longitudinal direction of the printed circuit board 5 by using the wiring layer of the printed circuit board 5. Inside the induction electrode 3, a hole 5a penetrating the printed circuit board 5 is opened. Further, the induction electrode 4 is formed on the surface of the other end portion in the longitudinal direction of the printed circuit board 5 by using the wiring layer of the printed circuit board 5. Inside the induction electrode 4, a hole 5 b penetrating the printed circuit board 5 is opened.

  Each of the metal cores 1 and 2 is provided perpendicular to the printed circuit boards 5 and 6. That is, the base end portion of the metal core 1 is inserted into the hole of the printed circuit board 6, and the distal end portion passes through the center of the hole 5 a of the printed circuit board 5. Further, the base end portion of the metal core 2 is inserted into the hole of the printed circuit board 6, and the distal end portion passes through the center of the hole 5 b of the printed circuit board 5. The base ends of the metal cores 1 and 2 are fixed to the printed circuit board 5 with solder. The tip of each of the metal cores 1 and 2 has a cylindrical shape obtained by cutting a thin round bar with a cross section perpendicular to the axis. In addition, each front-end | tip part of the metal cores 1 and 2 may be sharply sharpened.

  In addition, the ion generator includes a rectangular parallelepiped casing 10 having a rectangular opening slightly larger than the printed boards 5 and 6, a lid member 11 that closes the opening of the casing 10, a circuit board 16, and a circuit. A component 17 and a transformer 18 are provided.

The housing 10 is formed of an insulating resin. The lower portion of the housing 10 is formed slightly smaller than the upper portion, and a step is formed at the boundary between the upper portion and the lower portion of the housing 10 on the inner wall of the housing 10. Moreover, the lower part of the housing | casing 10 is divided into 2 in the longitudinal direction by the partition plate 10a. The transformer 18 is accommodated in the bottom on one side of the partition plate 10a. The circuit board 16 is provided on the step with the partition plate 10a so as to close the space on the other side of the partition plate 10a. The circuit component 17 is mounted on the lower surface of the circuit board 16 and accommodated in the space on the other side of the partition plate 10a.

  The printed boards 5 and 6 are accommodated horizontally in the upper part of the housing 10. The circuit board 16, the transformer 18, and the printed boards 5 and 6 are electrically connected by wiring. The high voltage portion in the housing 10 is filled with an insulating resin 19. The resin 19 is filled up to the lower surface of the printed circuit board 6. In the first embodiment, since the circuit component 17 connected to the primary side of the transformer 18 does not need to be insulated by the resin 19, the space on the other side of the partition plate 10a is filled with the resin 19. Absent.

  The lid member 11 is made of an insulating resin. Grooves are formed in the upper end portion of the inner wall of the housing 10, and engaging portions that are engaged with the grooves of the housing 10 protrude from both ends in the longitudinal direction of the lid member 11. A cylindrical boss 11 a is formed on the lower surface of the lid member 11 at a position corresponding to the hole 5 a and the metal core 1. A cylindrical boss 11 b is formed on the lower surface of the lid member 11 at a position corresponding to the hole 5 b and the metal core 2.

  The inner diameters of the bosses 11a and 11b are larger than the outer diameters of the metal cores 1 and 2, respectively. The outer diameters of the bosses 11a and 11b are smaller than the inner diameters of the holes 5a and 5b of the printed circuit board 5, respectively. Boss 11a, 11b has penetrated holes 5a, 5b of printed circuit board 5, respectively. A slight gap is formed between the front end surfaces (lower end surfaces) of the bosses 11 a and 11 b and the surface of the printed circuit board 6. The metal cores 1 and 2 pass through the bosses 11 a and 11 b, respectively, and the tip ends of the metal cores 1 and 2 protrude above the lid member 11 by about 5 mm.

  Cap portions 7 and 8 are attached to the tip ends of the metal cores 1 and 2, respectively. Each of the cap parts 7 and 8 has a cylindrical shape with one end pointed, and holes 7a and 8a are provided as fitting parts for inserting the metal cores 1 and 2 into the other end. The inner diameters of the holes 7a and 8a are slightly smaller than the outer shapes of the discharge electrodes 1 and 2, respectively. Therefore, the cap parts 7 and 8 can be detachably attached to the discharge electrodes 1 and 2 by inserting the holes 7a and 8a of the cap parts 7 and 8 into the distal ends of the discharge electrodes 1 and 2, respectively. . As shown in FIG. 1 (b), the cap portions 6 and 7 are formed with a gap between the root portion and the lid portion 11 when attached to the metal cores 1 and 2.

The cap portions 7 and 8 are each formed of conductive rubber. In Embodiment 1, it is formed from natural rubber, which is conductive rubber, but nitrile rubber (NBR), chloroprene rubber (CR), or the like may be used. Further, a conductive thermoplastic resin such as a conductive polyacetal resin (POM) may be used. The conductive rubber and the conductive thermoplastic resin are collectively referred to as a conductive resin. The volume resistance of these conductive resins is, for example, 10 ⁰ Ω · cm to 10 ⁵ Ω · cm. Since the cap parts 7 and 8 have conductivity, the tip part of the cap part is electrically connected to the discharge electrodes 1 and 2.

  FIG. 4 is a circuit diagram showing the configuration of the ion generator. In FIG. 4, the ion generator includes a power terminal T 1, a ground terminal T 2, diodes 32 and 33, and a step-up transformer 31 in addition to the metal cores 1 and 2 and the induction electrodes 3 and 4. In the circuit of FIG. 4, the portions other than the metal cores 1 and 2 and the induction electrodes 3 and 4 are composed of a circuit board 16, a circuit component 17, a transformer 18 and the like in FIG. Note that the cap portions 7 and 8 are omitted.

  A positive electrode and a negative electrode of a DC power supply are connected to the power supply terminal T1 and the ground terminal T2, respectively. A DC power supply voltage (for example, + 12V or + 15V) is applied to the power supply terminal T1, and the ground terminal T2 is grounded. The power supply terminal T1 and the ground terminal T2 are connected to the step-up transformer 31 via the power supply circuit 30.

  Step-up transformer 31 includes a primary winding 31a and a secondary winding 31b. One terminal of the secondary winding 31 b is connected to the induction electrodes 3 and 4, and the other terminal is connected to the anode of the diode 32 and the cathode of the diode 33. The cathode of the diode 32 is connected to the proximal end portion of the metal core 1, and the anode of the diode 33 is connected to the proximal end portion of the metal core 2.

  Next, the operation of this ion generator will be described. When a DC power supply voltage is applied between the power supply terminal T1 and the ground terminal T2, a capacitor (not shown) included in the power supply circuit 30 is charged. The electric charge charged in the capacitor is discharged through the primary winding 31a of the step-up transformer 31, and an impulse voltage is generated in the primary winding 31a.

  When an impulse voltage is generated in the primary winding 31a, positive and negative high voltage pulses are generated in the secondary winding 31b while being attenuated alternately. A positive high voltage pulse is applied to the metal core 1 via the diode 32, and a negative high voltage pulse is applied to the metal core 2 via the diode 33. Thereby, corona discharge is generated at the tips of the metal cores 1 and 2, and positive ions and negative ions are generated, respectively.

The positive ion is a cluster ion in which a plurality of water molecules are clustered around a hydrogen ion (H ⁺ ), and is represented as H ⁺ (H ₂ O) _m (where m is an arbitrary natural number). . The negative ions are cluster ions in which a plurality of water molecules are clustered around oxygen ions (O ₂ ⁻ ), and O ₂ ⁻ (H ₂ O) _n (where n is 0 or an arbitrary natural number). It is expressed as Moreover, when positive ions and negative ions are released into the room, both ions surround mold fungi and viruses floating in the air and cause a chemical reaction with each other on the surface. Suspended fungi and the like are removed by the action of the active species hydroxyl radical (.OH) generated at that time.

  FIG. 5 is a cross-sectional view showing a configuration of an ion delivery device using the ion generator shown in FIGS. 5, in this ion delivery device, a suction port 40a is provided on the lower back surface of the main body 40, and air outlets 40b and 40c are provided on the upper upper surface and front surface of the main body 40, respectively. Further, a duct 41 is provided inside the main body 40, an opening at the lower end of the duct 41 is provided to face the suction port 40a, and an upper end of the duct 41 is connected to the outlets 40b and 40c.

  A cross flow fan 42 is provided as a blower fan at the opening at the lower end of the duct 41, and an ion generator 43 is provided near the center of the duct 41. The ion generator 43 is shown in FIGS. The casing 10 of the ion generator 43 is fixed to the outer wall surface of the duct 41. The pointed ends of the cap portions 7 and 8 of the ion generator 43 penetrate the wall of the duct 41 and protrude into the duct 41. The two cap parts 7 and 8 are arranged in a direction orthogonal to the direction in which the air in the duct 41 flows.

  In addition, a lattice grill 44 made of resin is provided in the suction port 40 a, and a thin mesh filter 45 is attached to the inside of the grill 44. A lattice-shaped fan guard 46 is provided at the back of the filter 45 so that foreign matter and a user's finger do not enter the cross flow fan 42. A drop prevention net 47 is provided slightly below the position where the ion generator 43 of the duct 41 is provided. The drop-off prevention net 47 receives the cap portions 7 and 8 when the cap portions 7 and 8 have fallen off the metal cores 1 and 2, so that the cap portions 7 and 8 drop off and are caught in the cross flow fan 42. To prevent.

When the cross flow fan 42 is driven to rotate, indoor air is sucked into the duct 41 through the suction port 40a. Ions generated by the ion generator 43 in the duct 41 are released into the sucked air. The air containing ions is discharged into the room through the air outlets 40b and 40c.

  Next, the ion generation amount of the ion generation device according to the first embodiment was compared with the ion generation amount of the ion generation device that does not have the cap portions 7 and 8. In the ion generator to be compared, the cap parts 7 and 8 are removed from the ion generator in the first embodiment, the metal cores 1 and 2 are exposed, and the metal cores 1 and 2 are sharpened with sharp tips. It has been exchanged. When the amount of ions generated from both ion generators was measured under the same conditions, no difference was found. Therefore, even when the cap portions 7 and 8 were attached to the metal cores 1 and 2, the amount of ions generated did not change.

  In the ion generating apparatus according to the first embodiment, since the cap portions 7 and 8 protrude from the housing 10, the air passing through the duct 41 by the rotation of the cross flow fan 42 directly hits the cap portions 7 and 8. The ions generated around the tip of the cap portions 7 and 8 are carried on the air flow and carried to the downstream side of the duct 41. In this way, the ions generated around the cap portions 7 and 8 can be efficiently guided to the downstream side of the duct 41 and discharged from the outlets 40b and 40c.

  When exchanging the cap parts 7 and 8, the user can access the ion generator 43 installed in the duct 41 by removing the back cover 40 d on the back of the main body 40 of the ion delivery device. At this time, even if the tip portions of the cap portions 7 and 8 protruding from the housing 10 are touched, the cap portions 7 and 8 are made of resin, so that the user will not be injured by the finger. In particular, when the cap parts 7 and 8 are made of conductive rubber, even if the pointed part is sharp due to the elasticity of the rubber, the finger part is not injured by touching the tip part of the cap part 7 or 8.

  There are ion generators that are not exchanged by the user, but even in this case, with the ion generator 43 according to the first embodiment, an operator touches the tip portions of the cap portions 7 and 8 at the time of manufacture. There is no injury to the finger.

  As described above, in the first embodiment, since the tip portions of the cap portions 7 and 8 protrude from the housing 10 and the lid member 11, ions generated at the tip portions of the cap portions 7 and 8 are generated by the housing 10. It can be efficiently discharged to the outside. Moreover, since the cap parts 7 and 8 which cover the front-end | tip part of the metal cores 1 and 2 were provided, it can prevent that a user touches the front-end | tip part of the metal cores 1 and 2, and injures a finger | toe etc.

  When a high voltage is applied to the needle electrodes 1 and 2, an electric field is formed between the cap portions 7 and 8 and the induction electrodes 3 and 4, and corona discharge is generated at the tip portions of the cap portions 7 and 8. Ions are generated. When the corona discharge is generated, the tip portions of the cap portions 7 and 8 are worn by sputtering of ions. When the tip portions of the cap portions 7 and 8 are worn, corona discharge is less likely to occur, and ion generation efficiency may be reduced.

  In the ion generator 43 according to the first embodiment, since the cap portions 7 and 8 are detachable, the cap portions 7 and 8 can be easily replaced. When the cap portions 7 and 8 are replaced with new ones, the ion generation efficiency is restored to the original state, and the ion generator 43 can exhibit the original performance.

  In addition, since the induction electrodes 3 and 4 are mounted on the printed circuit board 5 and the metal cores 1 and 2 are mounted on the printed circuit board 6, the ion generator is placed in a high humidity environment with dust accumulated on the printed circuit boards 5 and 6. Even when placed on the metal core 1, the current can be prevented from leaking between the metal cores 1 and 2 and the induction electrodes 3 and 4, and ions can be generated stably.

Moreover, since the printed circuit boards 5 and 6 are covered with the lid member 11, it is possible to prevent dust from being deposited on the printed circuit boards 5 and 6. Even when dust enters through the bosses 11a and 11b, even if the dust accumulates on the printed circuit board 6, it does not easily accumulate on the printed circuit board 5. Further, since the bosses 11a and 11b of the lid member 11 are inserted into the holes 5a and 5b of the printed board 5, respectively, and the metal cores 1 and 2 are inserted into the bosses 11a and 11b, respectively, the metal cores 1 and 2 and the induction electrode 3, The spatial distance between the four can be increased. Therefore, current leakage between the metal cores 1 and 2 and the induction electrodes 3 and 4 can be more effectively prevented.

  Further, since the pointed ends of the cap portions 7 and 8 pass through the bosses 11a and 11b and project on the lid member 11, even if dust accumulates near the openings of the bosses 11a and 11b, the cap portion 7 , 8 can be prevented from being buried in dust and preventing the discharge of the tips of the cap portions 7, 8 from being hindered. Even when dust adheres to the tip portions of the cap portions 7 and 8, by applying a high voltage to the metal cores 1 and 2 while blowing air to the tip portions of the cap portions 7 and 8, the cap portion 7. , 8 can be blown off from the tip.

  Moreover, since the induction electrodes 3 and 4 are formed using the wiring layer of the printed circuit board 5, the induction electrodes 3 and 4 can be formed at low cost, and the cost of the ion generator can be reduced.

  In Embodiment 1, the induction electrodes 3 and 4 are formed using the wiring layer of the printed circuit board 5, but each of the induction electrodes 3 and 4 may be formed of a metal plate. In addition, each of the induction electrodes 3 and 4 may not be annular.

[Embodiment 2]
FIG. 6A is a top view of the ion generator according to Embodiment 2 of the present invention, and FIG. 6B is a cross-sectional view taken along the line AA of FIG. FIG. 2 is a diagram contrasted with FIG. In FIG. 6, the ion generator differs from the ion generator of FIG. 1 in that the base portions of the cap portions 7 and 8 are fitted into the bosses 11 a and 11 b of the lid portion 11.

  In the ion generator according to the second embodiment, the root portions of the cap portions 7 and 8 are longer than those in the ion generator according to the first embodiment. Since the cap parts 7 and 8 are inserted into the bosses 11a and 11b, the cap parts 7 and 8 can be prevented from falling off the metal cores 1 and 2 during use. A slight gap is formed between the base portions of the cap portions 7 and 8 and the printed circuit board 6. The metal cores 1 and 2 may be shorter than those in the second embodiment so as not to protrude from the housing 10 and the lid body 11.

[Embodiment 3]
FIG. 7A is a top view of an ion generator according to Embodiment 2 of the present invention, and FIG. 7B is a cross-sectional view taken along the line AA of FIG. FIG. 2 is a diagram contrasted with FIG. In FIG. 7, this ion generator differs from the ion generator of FIG. 1 in that the tips of the metal cores 1 and 2 have a sharp shape.

  Even when the cap parts 7 and 8 have fallen off the metal cores 1 and 2, the metal cores 1 and 2 function as needle-like electrodes because the tips of the metal cores 1 and 2 are sharp. Corona discharge occurs at the tips of the metal cores 1 and 2, and the same amount of ions as when the caps 7 and 8 are attached can be generated. In addition, when the holes 7a and 8a of the cap portions 7 and 8 are inserted into the distal end portions of the discharge electrodes 1 and 2, the distal end portions of the metal cores 1 and 2 are sharp and easy to insert.

[Embodiment 4]
FIG. 8 (a) is a top view of an ion generator according to Embodiment 4 of the present invention, and FIG. 8 (b) is a cross-sectional view taken along the line AA in FIG. 8 (a). FIG. 2 is a diagram contrasted with FIG. In FIG. 8, the ion generator differs from the ion generator of FIG. 1 in that the cap portions 7 and 8 have annular members 7b and 8b.

  The annular members 7 b and 8 b are ring-shaped members made of a conductive thermoplastic resin, and are inserted into the base portions of the cap portions 7 and 8. The annular members 7 b and 8 b are bonded to the cap portions 7 and 8 by a conductive adhesive so that they do not come off the cap portions 7 and 8. The cap portions 7 and 8 are detachably attached to the discharge electrodes 1 and 2 by inserting the inner peripheral portions of the annular members 7b and 8b into the tip portions of the discharge electrodes 1 and 2, respectively.

  Moreover, in this Embodiment, although the ion delivery apparatus was shown as an electric equipment using the ion generator 43, an air conditioner, a dehumidifier, a humidifier, an air cleaner, a refrigerator, a gas fan heater, a petroleum fan heater It may be mounted on an electric device such as an electric fan heater, a washer / dryer, a vacuum cleaner, a sterilizer, a microwave oven, and a copying machine.

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

1, 2 Metal core 3, 4 Induction electrode 5, 6 Printed circuit board 7, 8 Cap part 7a, 8a Hole (fitting part)
DESCRIPTION OF SYMBOLS 10 Housing | casing 11 Cover member 17 Circuit member 18 Transformer 19 Resin T1 Power supply terminal T2 Grounding terminal 32,33 Diode 31 Boost transformer 31a Primary winding 31b Secondary winding 41 Duct 43 Ion generator

Claims (4)

A discharge electrode;
A conductive cap that covers the tip of the discharge electrode;
The cap unit is made of resin and is detachably attached to the discharge electrode. The cap portion has one end a tip, the other end having a fitting portion the tip of the discharge electrode is fitted, a discharge apparatus according to claim 1.   An electrical apparatus comprising the discharge device according to claim 1. It further includes a duct that sends wind in a predetermined direction,
The electric device according to claim 3, wherein a pointed end portion of the cap portion is provided so as to be exposed in the duct.

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