JP2003123940A - Ion generator and air conditioner having this generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion generator for stably generating cation and anion. SOLUTION: This ion generator has in a case an ion generating element for generating the cation and the anion by impressing drive voltage, a voltage impressing means for generating the drive voltage impressed on the ion generating element, and an installing part for installing the ion generating element. Volume specific resistance of the case is set to 16 power of 10 Ω/cm or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ion generator for generating ions in the air and an air conditioner provided with the ion generator. Examples of those that correspond to the air conditioning device here include an air conditioner, a dehumidifier, a humidifier, an air purifier, a fan heater, etc., which are mainly in a house, a room in a building, a hospital room, a car, Used on airplanes and ships.

[0002]

2. Description of the Related Art In recent years, with the increasing airtightness of living spaces, the development of a technique for realizing a clean and comfortable living space, in particular, a technique for cleaning the air in the living space has been earnestly desired.
For such cleaning of air, conventionally, the air in a target space is sucked in, a circulating air flow generated through an appropriate filter is generated, and suspended matter existing in the circulating air flow is sequentially captured by the filter. The configured air conditioner is widely used.

However, in this type of air conditioner, suspended solids are only removed from the air sucked into the main body, and it is difficult to exert a cleaning effect on the entire living space. , For example, there is a problem that air stagnation is likely to occur in the back side of furniture arranged in the room, the corner of the living room, etc., and it is not possible to expect a sufficient effect in the part that needs to be cleaned. In order to maintain the above, cleaning and replacement of the filter are indispensable, and there is a problem that complicated maintenance work including these is forced.

Further, the suspended matter in the living space contains fine particles such as dust and smoke particles as well as bacteria such as mold fungi and Escherichia coli. The air conditioner using the filter as described above is Although it is effective for (fine particles) and a predetermined removal effect is obtained, for the latter (bacteria), which is harmful to the human body, they propagate while being captured by the filter and enter the living space together with the circulating air flow. Since it is returned, there is a problem that a sufficient removal effect cannot be obtained. In recent years, an air conditioner that uses a filter made of an antibacterial material to enhance the effect of removing bacteria has been put into practical use, but in reality, satisfactory performance has not been obtained.

In order to solve such a problem, the applicant of the present application has proposed a cleaning method based on a new idea, in which ions in the space are discharged to clean the air in the space. There is. In this method, an ion generator that generates approximately the same amount of positive ions and negative ions is arranged in the middle of a ventilation path that discharges an air flow into the target space, and the ion flow device discharges the air into the target space together with the air flow. Is.

The positive ion and the negative ion are
Are those produced by ionized by plasma discharge vapor in the air, the hydrogen ions (H ⁺⁾ or oxygen ions (O ₂ ^-) form a plurality of water molecules surround the accompanying so-called cluster ions It has a form. These ions released into the air are aggregated in suspended particles and chemically react with each other, resulting in hydrogen peroxide H ₂ O ₂ as an active substance.
Alternatively, it becomes a hydroxyl radical / OH, performs an oxidation reaction to remove hydrogen from suspended particles, inactivates suspended particles, and kills suspended bacteria.

The above-mentioned cleaning of the air is carried out by the action of ions that are released into the target space and spread throughout the space, and these ions act on airborne bacteria to sterilize them. Furthermore, since it acts on odorous molecules and harmful molecules to make them odorless and harmless, a satisfactory cleaning effect can be obtained over the entire target space. Also, the cluster ions released into the space are ions that are harmless to the human body existing in nature.

[0008]

As described above, the ion generator used for cleaning the air has a function of sterilizing airborne bacteria, deodorizing odorous substances, and detoxifying harmful substances. Not only purifiers, air conditioners,
It has been earnestly desired to be applied to all electric appliances that handle airflow, such as refrigerators and vacuum cleaners.

This ion generator has a discharge electrode and an induction electrode which are arranged to face each other across a dielectric and has a structure in which a high-voltage AC drive voltage is applied between these electrodes to cause plasma discharge. The ion generating element is provided.

In order to miniaturize the ion generator, the ion generating element is provided on both sides of a cylindrical or flat plate-shaped dielectric body in which both electrodes are arranged on the axial center and the peripheral surface of the cylindrical dielectric body. A flat plate with both electrodes is arranged, and a boosting means for boosting an input voltage from a commercial power source and a driving voltage having a predetermined driving waveform and a circuit board are attached and housed in one container (case). It can be made compact by unitizing.

In this case, however, even if the electrodes, the boosting means and the circuit board are installed in the unit while keeping them insulated from each other, the assembled container (case)
There is a problem that it is difficult to obtain a stable ratio of the generated amounts of both ions, because the generated amount of ions varies depending on the material (composition).

The present invention has been made in view of the above circumstances, and provides an ion generator for stably generating positive ions and negative ions, and an air conditioner using the ion generator. The purpose is to do.

[0013]

In order to achieve the above object, the present invention provides an ion generating element for generating positive ions, negative ions and negative ions by applying a driving voltage, and to the ion generating element. In an ion generator provided with a case in which a voltage applying means for generating a drive voltage and a mounting portion for mounting the ion generating element are provided, a volume resistivity of the case is 10 16 Ω · c.
Ion generator with m or more. According to this structure, the insulating property of the case is secured well, and the problem of electrical insulation is solved.

Further, an ion generating element for generating positive ions, negative ions and negative ions by applying a driving voltage, voltage applying means for generating a driving voltage applied to the ion generating element, and the ion generating element are provided. An ion generating device provided with a mounting portion to be mounted in a case, wherein the case is formed of a resin material containing no carbon. According to this structure, the insulating property of the case is secured well, and the problem of electrical insulation is solved.

The voltage applying means comprises a voltage boosting means for boosting the voltage and a circuit board having a circuit for controlling the input to the ion generating element, and the voltage boosting means is provided in the case as a first circuit. Insulation molding is performed with a filling material, and insulation between the circuit board and the ion generating element is performed with a second filling material.
The ion generating device is characterized in that the volume resistivity of the filling material and the second filling material is 10 13 Ω · cm or more. According to this structure, the insulation property in the case is further ensured, and the problem of electrical insulation is solved.

Further, an ion generating element for generating positive ions, negative ions and negative ions by applying an alternating driving voltage, a boosting means and a circuit board for generating a driving voltage applied to the ion generating element, A case in which a chamber for boosting means and a supporting portion for the circuit board are provided, a mounting portion for mounting the ion generating element, and a rectifying means having an anode and a cathode,
An opening / closing means connected in series to the rectifying means, a capacitance section connected in parallel to the rectifying means, the anode side is connected to one of the electrodes, and the cathode side is grounded in the voltage applying means. In the ion generator connected to the wire, the rectifying means and the opening / closing means are different substrates other than the substrate on which the voltage applying means is mounted, and the ion generator is formed outside the case. According to this configuration, by forming it outside the case, a board provided with the rectifying means and the opening / closing means,
It is possible to sufficiently separate the substrate on which the voltage applying means is mounted, so that the insulation distance can be kept long.

[0017]

DETAILED DESCRIPTION OF THE INVENTION The first embodiment of the present invention will be described in detail below. 1 is a main circuit diagram used in the ion generator according to the present invention, FIG. 2 is a voltage application waveform diagram when a voltage is applied to an ion generating element using the circuit of FIG. 1, and FIG. 3 is an ion diagram shown in FIG. FIG. 4 is an external perspective view of the ion generator as seen from the ion generating element side, FIG. 4 is an external perspective view as seen from the side opposite to the ion generating element side of the ion generating device shown in FIG. 1, and FIG. 5 is the ion generating device according to the present invention. FIG. 3 is an exploded perspective view showing the embodiment of FIG.

FIG. 6 is a perspective view from the back side of the cover plate 54 holding the ion generating element 10, FIG. 7 is an external perspective view of the ion generating element 10, and FIG. 8 is an ion generating element 10. 9 is a plan view of FIG. 9, and FIG. 9 is an enlarged cross-sectional view taken along the line CC of FIG.

In FIG. 1, reference numeral 30 is an AC commercial power source, which is connected via an SSR (solid state relay) to a point A which is one input end of a high voltage applying means 40 as a voltage applying means. For point A where the SSR is connected,
A point B, which is the other input end of the high voltage applying means 40, is directly connected to the AC commercial power source 30, and here, the point B is a ground point, that is, a ground line.

The SSR is controlled to be opened / closed by a control signal SS from the control unit 33C of the microcomputer 33. The control signal SS may be directly input by separately providing a direct input means such as an input button without depending on the microcomputer control. The SSR is connected to the anode side of the diode D3 via the resistor R1. The cathode side of the diode D3 is connected to the positive side of the capacitor C2. Also,
The negative electrode side of the capacitor C2 is connected to the AC commercial power supply 30 via the diode D1. When the SSR is turned on, the high voltage applying means 40 is supplied with electric power from the AC commercial power source 30 and the ion generating element 10 is applied with a high voltage (which is a voltage necessary for ion generation) to generate ions. . When the SSR is off, no electric power is supplied to the high voltage applying means 40 from the AC commercial power source 30 and no high voltage is applied to the ion generating element 10, so that no ions are generated.

One end of the primary winding 31P of the switching transformer 31 is connected to the positive side of the capacitor C2. The other end of the primary winding 31P of the switching transformer 31 is connected to the SCR. Capacitor C1, resistance R
3, R4 and R5 form a gate control circuit of the SCR. The resistor R2 divides the AC commercial power supply 30 with the resistor R1 and applies an appropriate voltage to the capacitor C2. The diodes D2 and D4 are for backflow prevention. The switching transformer 31 includes a secondary winding 31S on the secondary side, and the secondary winding 3S
The ion generating element 10 is connected to 1S. The ion generating element 10 has a dielectric 11 and a pair of electrodes (an internal electrode 12 and a surface electrode 13) facing each other with the dielectric 11 sandwiched therebetween.

A series circuit composed of a rectifying means and an opening / closing means is connected between one of the pair of electrodes of the ion generating element 10 (here, the surface electrode 13) and the ground line (that is, point B). The rectifying means includes an anode and a cathode, and is constituted by a diode D5 here, and the anode is connected to the surface electrode 13 side and the cathode is connected to the ground line side. The opening / closing means is composed of the relay 32. The rectifying means, that is, the diode D5, includes the capacitor C3 of the electrostatic capacity section.
Are connected in parallel.

The relay 32 is a microcomputer 33.
Opening / closing control (on / off control) is performed by a relay control signal 32S from the control unit 33C. Relay control signal 32S
Is appropriately processed and determined and output various input information IN to the input unit 34 of the microcomputer 33. Input unit 34
The various input information IN to the is, for example, operation mode designation information from the operation unit that allows the user to select the operation mode, and is the measurement result of the pollution degree of the surrounding environment by the environment sensor (for example, the pollution degree sensor). 33 C of control parts are comprised by the control circuit etc. which output a control signal etc. still,
The calculation unit and the like in the microcomputer 33 are omitted.

In such a configuration, when the SSR is turned on, an alternating current is applied between the points A and B, but the capacitor C2 is charged (SCR when the potential at the point A is higher than the potential at the point B). Keeps off). Next, when the alternating current is reversed (the period at which the potential at the point B is higher than the potential at the point A), the gate control circuit operates to apply a voltage equal to or higher than the threshold voltage between the gate and the cathode of the SCR, and the SCR is turned on.
When the SCR is turned on, the capacitor C2 is discharged, and the capacitor C2 → switching transformer 31 (primary winding 31
P) → SCR → current flows through the path of the diode D1, and as a result, the secondary winding 31S of the switching transformer 31
Also induced voltage is generated.

Since the ion generating element 10 is a capacity load and a resistance load in a pseudo manner, the secondary side circuit of the switching transformer 31 is equivalently an LCR oscillating circuit, and the energy charged in the primary side capacitor C2. The vibration stops after the energy corresponding to is released and consumed also on the secondary side.

FIG. 2 is a potential waveform diagram in the ion generating element. The vertical axis represents voltage V and the horizontal axis represents time T. The voltage is about 5 to 7 kV in the value from the peak (positive) to the peak (negative) of the maximum amplitude, and the vibration period of the vibration waveform is about 0.
1 to 0.2 ms. This vibration waveform is generated in a cycle corresponding to the frequency of the AC commercial power supply 30. The same figure (a)
Shows a potential waveform when the relay 32 in the circuit of FIG. 1 is turned off (that is, the state where the diode D5 is not connected), and the negative ions and the positive ions are generated in substantially the same amount.

FIG. 2B shows the potential waveform when the capacitor C3 is removed and the relay 32 is turned on (that is, the diode D5 is connected) in the circuit of FIG. In order to cut off the current in one direction, the diode D5 is viewed from the potential at the point B, and the surface electrode 1
The potential of 3 has a waveform shifted in the negative direction. Therefore, the ratio of positive ions is small and the number of negative ions is large.

FIG. 3C shows the case where the relay 32 in the circuit of FIG. 1 is turned on (that is, the diode D5 is connected and the capacitor C3 is added in parallel to the diode D5). A potential waveform is shown. The potential of the surface electrode 13 shifts in the positive direction as compared with the case of FIG. 7B, and a small amount of positive ions are generated. When the capacitance of the capacitor C3 was 200 pF, the number of positive ions was 140,000 / cc and the number of negative ions was 380,000 / cc.

As shown in FIG. 3, the ion generator 1 includes a plate-shaped ion generating element 10 and a boosting coil (boosting means).
51 and the circuit board 52, a case 53 that holds them together, and a cover plate 54 that holds the ion generating element 10 and closes the case 53.

The ion generating element 10 is shown in FIGS.
, The lower dielectric 11b stacked in the thickness direction as shown in FIG.
7 and 8, a grid-shaped discharge electrode 13 is formed on one surface of the dielectric 11 formed by integrating the upper dielectric 11a and the upper dielectric 11a, and the lower dielectric 11b and the upper dielectric 11a are formed. 9, a planar internal electrode 12 is embedded so as to face the discharge electrode 13 as shown in FIG.
Further, as shown in FIG. 9, the upper part of the discharge electrode 13 is covered with a protective layer 11c made of a dielectric material.

The lower dielectric 11b and the upper dielectric 11a constituting the dielectric 11 together with the protective layer 11c are resin materials such as polyimide and epoxy, or ceramic materials such as alumina, crystallized glass, forsterite and steatite. However, it is preferable to use a ceramic material having excellent heat resistance and strength, particularly alumina.

The discharge electrode 13 and the internal electrode 12 can be formed of a metal material usually used for electrode formation. When the dielectric material 11 and the protective layer 11c are made of a ceramic material, the firing temperature of these materials is not limited. In order to withstand the above, it is desirable to use a metal material having a high melting point such as tungsten or molybdenum.

In the ion generating element 10 as described above, the internal electrodes 12 are formed by pattern-printing a tungsten material on the surface of the lower dielectric 11b made of, for example, an alumina sheet, and then the alumina sheet is formed so as to cover the entire formation surface. The upper dielectric 11a made of is placed and pressure-bonded, and the discharge electrode 13 is formed on the surface of the upper dielectric 11a by pattern printing of the same tungsten material. Furthermore,
A protective layer 11c made of alumina is formed by coating so as to cover the entire formation area of the discharge electrode 13, and finally, these are baked in a non-oxidizing atmosphere at 1400 to 1600 ° C.

As shown in FIG. 9, the discharge electrode 13 is formed by the electrode contact 15 penetrating the upper dielectric body 11a and the lower dielectric body 11b, and the internal electrode 12 is formed in the lower dielectric body 11a.
Electrode contacts 14 penetrating b are made to communicate with the back surface of the dielectric 11 respectively, and a high-voltage AC drive voltage is applied between the discharge electrode 13 and the internal electrode 12 via the electrode contacts 14 and 15. It is designed to be done. The electrode contacts 14 and 15 can be integrally formed by filling the through holes formed at the corresponding positions with the electrode material in the process of forming the electrodes 12 and 13.

Further, as shown in FIGS. 7 and 8, the discharge electrode 13 is formed as a grid electrode in order to increase the amount of ions generated by applying the drive voltage as much as possible.

Further, as shown in FIG. 8, the internal electrode 12 is
The discharge electrode 13 is formed so as to be centered with the discharge electrode 13.
As a strip-shaped electrode whose length and width are smaller than 3, respectively,
The projection area of the discharge electrode 13 is made larger than the projection area of the internal electrode 12 to contribute to the balance of ion generation.

As a specific example of the ion generating element 10, about 15 mm × 37 m formed by stacking an upper dielectric body 11a and a lower dielectric body 11b each having a thickness of about 0.45 mm.
On the surface of the dielectric 11 having a size of m × 0.9 mm, 0.
Lines of 25 mm are arranged vertically and horizontally at a pitch of 0.8 mm to form a grid-shaped discharge electrode 13 having a size of about 10.4 mm × 28 mm, and between the upper dielectric body 11a and the lower dielectric body 11b. A planar internal electrode 12 having a size of about 6 mm × 24 mm is formed.

When a high-voltage AC drive voltage having a frequency of about 4.6 kV (peak value) and 22 kHz was applied between them, the plasma discharge generated between both electrodes 12 and 13 caused the action of the ion generating element. 10 to 25
It was confirmed that positive ions and negative ions exceeding 200,000 pieces / cc were generated at positions separated by cm. This amount of generated ions is an amount sufficient to function as an air conditioner for a living room of a general size.

It should be noted that the amount of generated ions is the same as that of the ion generating element 1.
It is increased by increasing the size of 0 and is also increased by increasing the driving voltage. However, when the drive voltage is increased, the amount of ozone generated also increases, so it is not desirable to excessively increase the drive voltage.

Further, the shapes of the discharge electrode 13 and the internal electrode 12 and the dielectric (the upper dielectric 1
The size and thickness of 1a) are not limited to those in the above embodiment, and can be changed appropriately.

The ion generating device 1 using the ion generating element 10 as described above has the booster coil 51,
A circuit board 52, a case 53, and a cover plate 54 are provided. As shown in FIG. 5, the booster coil 51 has a configuration in which a pair of high-voltage terminals 55, 55 and a pair of input terminals 56, 56 are provided on one side of a resin case so as to project.

The circuit board 52 has the high voltage applying means 40 of the ion generating element 10 formed on one surface (the lower surface in FIG. 5). The high voltage applying means 40 is configured as shown in FIG. 1 as described above, is a board on which the SSR, the capacitor C2, etc. are mounted, and the boosting coil 51 is provided on one side in the longitudinal direction thereof. Connection holes 5 for connecting the high voltage terminals 55, 55 and the input terminals 56, 56 of the
, And a connecting portion 59 for connecting the ion generating element 10 are provided corresponding to the drive waveform generating circuit formed on the lower surface, and the connecting holes 58, 58 ,.
A window hole 60 is formed penetrating the inside of the formation position on the front and back. Further, on the other side of the circuit board 52, four connection pins 61 for external connection are provided on the one surface side so as to project, as shown in FIG.

The case 53 is a box body having a rectangular opening into which the circuit board 52 can be inserted on the entire surface on one side and a bottom having a semicircular cross section on the other side, and the bottom is substantially in the longitudinal direction. A partition wall 62 having a predetermined height which is horizontally installed so as to be orthogonal to each other is divided into a coil housing chamber 63 and a circuit component receiving chamber 64. A support edge 65 is provided on the inner surface of the case 53 at a height position corresponding to the upper edge of the partition wall 62 and extends inward over the entire circumference to serve as a support portion for the circuit board 52. Recesses 66, 66 ... (Only one side is shown) for engaging the cover plate 54 are formed at two locations on the periphery of the opening of the case 53, which are spaced apart from each other on opposite long sides.

As the material of the case 53, it is preferable to select a resin material having excellent electrical insulation. For example, when a resin material is mixed with a pigment such as when the color tone of the case is black, carbon is generally added as the pigment. In such a case, the volume resistivity of the case is about 10 9 Ω · cm, and the insulation of each component in the ion generator 1 cannot be sufficiently secured. At this time, as for the amount of generated ions, the amount of generated positive ions and the amount of negative ions should be approximately the same amount if the insulation is sufficiently secured. , Negative ion amount 20 ~
There arises a problem that an extremely large amount of negative ions is generated at 430,000 / CC.

Therefore, when molded with a resin material containing no pigment carbon, the volume resistivity of the case is about 10
16 Ω · cm or more, and the insulation of each component in the ion generator 1 can be sufficiently maintained. The amount of generated ions at this time is approximately 190,000 positive ions / CC and 180,000 negative ions / CC, which are approximately the same number. Examples of the resin material having a volume resistivity of the case of about 10 16 Ω · cm or more include PPE and PPS.

As shown in FIG. 6, the cover plate 54 is a flat plate made of a resin material, and on one side in the longitudinal direction thereof, a rectangular recess 67 corresponding to the ion generating element 10 is provided. At the place 67, the discharge electrode contact 1 of the ion generating element 10 is provided.
5 and oval window holes 68, 68 penetrating the front and back are formed so as to correspond to the formation positions of 5 and the internal electrode contact 14, respectively. Further, on the other side in the longitudinal direction of the cover plate 54, a rectangular window hole 69 penetrating the front and back is formed.
4 are formed with locking claws 70, 70 ... (Only one side is shown) at positions corresponding to the recesses 66, 66 ... Formed on the peripheral edge of the opening of the case 53, respectively. There is.

In the lid plate 54 constructed as described above, the ion generating element 10 can be fitted in the recess 67 and held integrally. The ion generating element 10 can be fixed by an appropriate means such as adhesion to the bottom surface of the recess 67 and engagement of the peripheral edge of the ion generating element 10 with a locking claw (not shown) provided around the recess 67. .

The window 6 formed in the recess 67 as described above.
Reference numerals 8 and 68 correspond to the exposed portions of the discharge electrode contact 15 and the internal electrode contact 14 on the back surface of the ion generating element 10, and the ion generating element 10 includes these electrode contacts 15 and 1.
4 are connected to the circuit board 52 by the lead wires 15a and 14a separately welded. In the periphery of the window holes 68, 68,
A pair of hook-shaped projections 71, 71 are provided so as to project in the width direction, and the lead wires 15a, 14a are locked by these hook-shaped projections 71 and are spaced apart from each other in the width direction of the window hole 69. It is guided to the formation side and is used for connection with the circuit board 52 as described later.

Since the hook-shaped projections 71, 71, ... Provided on the peripheral edges of the window holes 68, 68 act as a stopping portion for the lead wires 15a, 14a, the lead wires 15 are formed.
It is possible to maintain a sufficient insulation distance between a and 14a, and it is possible to easily handle the connection with the circuit board 52.

The ion generator according to the present invention is constructed by assembling the booster coil 51, the circuit board 52, and the case 53, which are constructed as described above, and the lid plate 54 to which the ion generating element 10 is fixed as follows. To be done.

First, the booster coil 51 is inserted into the coil accommodating chamber 63 provided at the bottom of the case 53 so that the projecting sides of the high voltage terminal 55, the ground terminal and the input terminals 56, 56 face upward, and the coil accommodating chamber 63 is filled. The material 72 is filled by vacuuming while preventing air bubbles from being mixed, and is insulation-molded. As the filler 72, it is desirable to use a resin material such as an epoxy resin having excellent dielectric strength. The epoxy resin filler 72 has a volume resistivity of 10 13 Ω · c.
m is a resin material having excellent insulation properties.

A part of the filling material 72 is part of the booster coil 5.
If the coil housing chamber 63 is filled prior to the insertion of No. 1, the outside of the boosting coil 51 can be favorably molded at the time of insertion, and the occurrence of insulation failure due to the inclusion of bubbles can be effectively avoided. It will be possible. The filling material 72 is filled only in the coil housing chamber 63, and the partition wall 62
So that it does not leak into the adjacent circuit component receiving chamber 64 via.

After that, the drying and solidification of the filling material 72 is waited, and the circuit board 52 is inserted into the case 53 through the upper opening. In this insertion, the mounting surface of the circuit components 57, 57 ...
Are connected to the step-up coil 51, and four connecting holes 58, 58 for connecting to the boosting coil 51 are aligned, and the lower surface of the circuit board 52 is abutted against the partition wall 62 and the support edge 65. After this insertion, the high voltage terminal 55 protruding from the connection holes 58, 58, the ground terminal and the input terminal 56,
The tip of 56 is welded to the corresponding position from the upper surface of the circuit board 52.

By this welding, the circuit board 52 is supported from below by the support edge 65 and the upper edge of the partition wall 62, and the high voltage terminal 55, the ground terminal and the high voltage terminal 55 are fixed by the booster coil 51 fixed by the filling material 72. Input terminal 5
6,56 are fixed as supporting legs. At this time, the circuit components 57, 57, ... Mounted on the circuit board 52 are received in the circuit component receiving chamber 64 arranged in parallel in the coil accommodating chamber 63, and the four component parts projecting on one edge of the same side. Connection pin 61,
61 are projected to the outside of the case 53 through the openings provided at the corresponding positions, and constitute connection terminals 73 and 74 (see FIG. 4) for connection with an external power source and an external control circuit. It should be noted that each two connection pins 6 in the connection terminals 74 and 75
The intervals between the juxtaposed portions 1 and 61 are different from each other in order to avoid the occurrence of a connection error.

After the circuit board 52 has been attached in this manner, the lid plate 54 holding the ion generating element 10 is attached as described above. This attachment is performed by aligning the window hole 52 formed on one side in the longitudinal direction with the formation position of the window hole 33 formed on the circuit board 52 previously fixed in the case 53, and holding the ion generating element 10 upward. As the case 53
The lid plate 54 is aligned with the upper side opening of the ion generating element 10, and the lead wires 15a and 14a of the ion generating element 10 along the back surface of the lid plate 54 are provided on the upper surface of the circuit board 52 as described above. , 73 separately, and then the cover plate 54
Is fitted into the upper opening of the case 53. At this time, the locking claws 70 provided on both side edges of the cover plate 54,
70 are flexibly deformed, and are engaged with corresponding recesses 66, 66 provided in the peripheral edge of the opening of the case 53 by elastic return, and the lid plate 54 is separated from the upper surface of the substrate 52 by an appropriate length. Is attached so as to cover the opening of the case 53.

After this attachment, the filling material 74 is introduced through the window hole 69 formed in the cover plate 54, and the space between the filling material 74 and the substrate 52 is filled to generate ions with the substrate 52. The element 10 and the element 10 are insulation-molded, and after waiting for the drying and solidification of the filler 74, the ion generator according to the present invention is constructed as shown in FIGS. 3 and 4.

As the filling material 74, it is desirable to use a resin having excellent fluidity such as urethane resin in order to ensure the filling through the window 69. The filling material 74
Is partially filled also in the upper part of the coil housing chamber 63 in which the booster coil 51 is housed through the window hole 60 of the substrate 52 which is opened below the window hole 69 to assist the insulation by the filler 72. To act. At this time, the filler 74
Is a circuit component receiving chamber 64 provided in parallel with the coil accommodating chamber 63.
I try to invade the room, but this invasion is in both chambers 63 and 64.
It is blocked by the partition wall 62 in between. Therefore, the mounting components of the substrate 52 received in the circuit component receiving chamber 64 are
The stress due to the shrinkage of the filling material 74 at the time of solidification is not applied, and it is possible to prevent the occurrence of troubles such as disconnection and dropping.

On the other hand, the stress caused by the contraction of the filling material 74 causes the ion generating element 10 extracted to the lower surface of the lid plate 54.
Of the lead wires 15a, 14a, the lead wires 15a, 14a are locked to the hook-shaped projections 71, 71 ... Therefore, the welded portions on the ion generating element 10 and the substrate 52 are not affected by the stress, and a reliable connection state can be maintained.

The ion generator thus constructed is
Case 53 with built-in boost coil 51 and circuit board 52
It is a compact structure in which the ion generating element 10 is attached to the outside of the, and the ion generating operation can be performed by connecting the connection terminals 74 and 75 to the external power source and the external control circuit, thereby cleaning the air. It can be easily incorporated and used in various electric devices that require. Needless to say, the electric devices include devices such as air purifiers and air conditioners that require cleaning of air sent to the outside.
It can be used for a wide range of electric devices, including electric devices that require cleaning of the air circulating therein, and electric devices for which cleaning of the air discharged to the outside is desired, such as vacuum cleaners.

Next, a second embodiment according to the present invention will be described. A second embodiment of the present invention is a circuit board including the relay 32, a diode D5 and a capacitor C3 in the circuit shown in FIG. 1 in which the circuit of FIG. 1 described in the first embodiment described above is included. 39 (hereinafter referred to as the relay substrate 39) and the high voltage applying means 40 are configured as separate substrates, and the relay substrate 39 is disposed outside the case 53.

The high voltage applying means 40 is provided on the circuit board 52 inside the case 53. The term “outside the case 53” used herein means that the relay board 39 is provided outside the case 53.
And a case where the relay substrate 39 is not held in the case 53 and the relay substrate 39 is mounted in a configuration different from the case 53, for example, a part of the air conditioner in which the ion generator 1 is mounted. Is.

FIG. 10 shows an air purifier as an example of the air conditioner having the above structure. FIG. 10 is a front sectional view of the air purifier.

As shown in FIG. 10, the air purifier 80 is provided with a suction port covered with a filter 82 inside the main body housing 81, and a blower fan (not shown) is provided inside the filter 82. Is installed. A spiral ventilation passage 83 is formed in front of the filter 82 and communicates with an air outlet 84 formed in an upper portion of the main body housing 81. Air is sucked from the air inlet by rotation of a blower fan,
The suspended matter contained in the air is captured by the filter 82,
The spiral ventilation passage 83 is ventilated and sent out from the air outlet 73.

Then, the circuit board 39 and the high voltage applying means 40 are formed as separate boards, the relay board 39 is not held in the case 53, and the relay board 39 is not attached to a part of the air cleaner. is there.

In such an air purifier 80, in the ion generator according to the present invention, the mounting surface of the ion generating element 10 is attached to a part of the peripheral wall of the air passage 83 in the air flow flowing in the air passage 83. They are installed so that they face each other. After this attachment, the connection terminals 74 and 75 outside the case 53 (see FIG.
If the control circuit of the air purifier 80 is connected to the external power source, the ion generator ionizes the water vapor in the air flowing in the air passage 83 by plasma discharge to generate approximately the same amount of positive ions and negative ions. These ions are sent out from the air outlet 84 together with the air, and as described above, they act to inactivate suspended particles in the delivery space and to kill suspended bacteria. Therefore, the interior of the living room in which the air purifier 80 is installed can be cleaned by a synergistic effect with the dust trapped by the filter 82.

Further, the circuit board 39 and the high voltage applying means 4
0 is configured as another substrate, the relay substrate 39 is provided outside the case 53, and the high voltage applying means 40 is provided inside the case 53. Can be generated at substantially the same amount. At this time, when the amount of generated ions was measured, it was 240,000 positive ions / CC and 240,000 negative ions / CC.

[0067]

As described above, according to the configuration of the present invention, the insulating property of the case is secured well and the problem of electrical insulation is solved, so that the generation amount of positive ions and negative ions is stabilized. It is possible to generate approximately the same number.

Further, an ion generating element for generating positive ions, negative ions and negative ions by applying an alternating driving voltage, boosting means and a circuit board for generating a driving voltage applied to the ion generating element, A case provided with a chamber for the boosting means and a supporting portion for the circuit board, a mounting portion for mounting the ion generating element, and a rectifying means having an anode and a cathode, and a rectifying means connected in series to the rectifying means. In an ion generator in which an opening / closing means, a capacitance section connected in parallel to the rectifying means, the anode side is connected to one of the electrodes, and the cathode side is connected to a ground wire provided in the voltage applying means. ,
The rectifying means and the opening / closing means are provided on another substrate other than the board on which the voltage applying means is mounted, and the ion generating device is formed outside the case, and the rectifying means and the opening / closing means are provided outside the case. The substrate and the substrate on which the voltage applying means is mounted can be sufficiently separated from each other, and thus the insulation distance can be maintained at a large distance, so that it is possible to stably generate approximately the same number of positive and negative ions. is there.

[Brief description of drawings]

FIG. 1 is a main circuit diagram of an ion generator according to the present invention.

FIG. 2 is a potential waveform diagram in the ion generating element of FIG.

FIG. 3 is an external perspective view of the ion generating device shown in FIG. 1 as viewed from the mounting side of the ion generating element.

4 is an external perspective view of the ion generator shown in FIG. 1 as viewed from the side opposite to FIG.

5 is an exploded perspective view of the ion generator shown in FIG. 1. FIG.

FIG. 6 is a perspective view from the back surface side of a lid plate holding an ion generating element.

FIG. 7 is an external perspective view of an ion generating element.

FIG. 8 is a plan view of an ion generating element.

9 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 10 is a front sectional view showing an example of use of the ion generator according to the present invention in an air conditioner.

[Explanation of symbols]

1 Ion generator 51 Booster coil (Booster coil) 52 circuit board 53 cases 54 Lid plate 10 Ion generator 12 internal electrodes 13 Discharge electrode 72 (first) filler 74 (Second) filler 63 coil storage chamber 64 circuit component receiving room

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[Procedure amendment]

[Submission date] November 29, 2002 (2002.11.
29)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

[0013]

To achieve the above object, the present invention provides an ion generating element for generating positive ions and negative ions by applying a driving voltage, and a driving voltage applied to the ion generating element. An ion generating device provided with a case in which a voltage applying means for generating and a mounting portion for mounting the ion generating element are provided, wherein the volume resistivity of the case is 10 16 Ω · cm or more. . According to this structure, the insulating property of the case is secured well, and the problem of electrical insulation is solved.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Further, an ion generating element for generating positive ions and negative ions by applying a driving voltage, a voltage applying means for generating a driving voltage applied to the ion generating element, and a mounting for mounting the ion generating element. And an ion generator provided in a case, wherein the case is formed of a resin material containing no carbon. According to this structure, the insulating property of the case is secured well, and the problem of electrical insulation is solved.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

Further, an ion generating element for generating positive ions and negative ions by applying an alternating driving voltage, a boosting means and a circuit board for generating a driving voltage applied to the ion generating element, and the boosting means. A case provided with a housing chamber and a support portion for the circuit board, a mounting portion for mounting the ion generating element integrally provided, a rectifying means having an anode and a cathode, and an opening / closing means connected in series to the rectifying means. An ion generating device in which an electrostatic capacitance portion connected in parallel to the rectifying means, the anode side is connected to one of the electrodes, and the cathode side is connected to a ground line provided in the voltage applying means, The means and the opening / closing means are different boards other than the board on which the voltage applying means is mounted, and the ion generator is formed outside the case. According to this structure, by forming it outside the case, the board having the rectifying means and the opening / closing means and the board having the voltage applying means can be sufficiently separated from each other, thereby keeping the insulation distance far. it can.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B03C 3/40 B03C 3/40 A 3/66 3/66 3/82 3/82 F24F 1/00 F24F 7 / 00 B 7/00 1/00 371B F term (reference) 3L051 BC10 4C058 AA19 BB06 KK06 4C080 AA09 BB02 BB04 BB05 CC01 KK02 LL10 MM40 NN02 NN03 NN22 QQ11 QQ17 4D054 AA11 BA20 CA20 CB10 EA

Claims (5)

[Claims] 1. An ion generating element for generating positive ions, negative ions and negative ions by applying a driving voltage, voltage applying means for generating a driving voltage applied to the ion generating element, and the ion generating element. An ion generator equipped with a mounting part to be mounted on a case, wherein the case has a volume resistivity of 10 16 Ω · cm or more. 2. An ion generating element for generating positive and negative ions and negative ions by applying a driving voltage, a voltage applying means for generating a driving voltage applied to the ion generating element, and the ion generating element. An ion generator equipped with a mounting part to be mounted on a case, wherein the case is molded with a resin material containing no carbon. 3. The voltage applying means comprises a circuit board having a voltage boosting means for boosting a voltage and a circuit for controlling an input to the ion generating element, and the voltage boosting means is provided in a first case in the case. Insulation molding is performed with a filling material, and a space between the circuit board and the ion generating element is insulation molded with a second filling material.
3. The ion generator according to claim 1, wherein the volume resistivity of the first filling material and the second filling material is 10 13 Ω · cm or more. 4. An ion generating element for generating positive ions, negative ions and negative ions by applying an alternating driving voltage, a boosting means and a circuit board for generating a driving voltage applied to the ion generating element, A case provided with a chamber for the boosting means and a supporting portion for the circuit board, a mounting portion for mounting the ion generating element, and a rectifying means having an anode and a cathode, and a rectifying means connected in series to the rectifying means. In an ion generator in which an opening / closing means, a capacitance section connected in parallel to the rectifying means, the anode side is connected to one of the electrodes, and the cathode side is connected to a ground wire provided in the voltage applying means. An ion generating apparatus characterized in that the rectifying means and the opening / closing means are formed on another substrate other than the substrate on which the voltage applying means is mounted and are formed outside the case. 5. An air conditioner comprising the ion generator according to any one of claims 1 to 4.