JP4407174B2 - Negative ion / ozone generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a negative ion / ozone generator and an electrode used therefor.
[0002]
[Prior art]
It is said that negative ions can be expected not only to clean and deodorize air but also to relax, and in recent years, devices such as air purifiers and deodorizers having a function of generating negative ions have become widespread.
[0003]
As means for generating negative ions, a corona discharge method, a water ionization method, an electron emission method, and the like are known, but the corona discharge method that is easy to manufacture and easy to handle is most often used.
[0004]
In the corona discharge type, a high voltage is applied to the positive electrode and the negative electrode to generate a corona discharge between the electrodes, thereby generating negative ions. In the corona discharge type, ozone can be generated at the same time, and sterilization and deodorization can be performed using an appropriate amount of ozone.
[0005]
The shape of the corona discharge positive electrode is generally flat, cylindrical, or linear, and the shape of the negative electrode is generally needle-shaped.
[0006]
The flat electrode has the advantage that it can be easily fixed in the apparatus and has a long life, but it has a problem that it is difficult to diffuse the generated negative ions and ozone.
[0007]
An electrical air current is generated by corona discharge, but it is difficult to generate an air current with a flat electrode. If the voltage applied to the electrode is increased, an air flow with a certain wind speed can be generated. However, a large amount of ozone is generated. Since ozone has a bactericidal effect, it is useful for air purification if it is in an appropriate amount, but if the amount is too large, it is said that it has an undesirable effect on the human body, and a large amount of ozone is not preferred.
[0008]
Therefore, in a negative ion / ozone generator using flat electrodes, a blower using a fan, a motor or the like is incorporated in the apparatus to generate wind and diffuse negative ions.
[0009]
However, electric power required for operating the blower is required separately, and noise such as fan rotation noise is generated. Furthermore, there is a problem that a space for installing a fan and a motor is required and it is difficult to reduce the size of the apparatus.
[0010]
In the case of a cylindrical electrode, the air flow necessary for diffusion can be obtained unlike a flat electrode, but the diameter of the cylinder is constant for mass production, so the design of the device and the amount of generated negative ions and ozone Adjustment becomes difficult. Of course, it is sufficient to make cylindrical electrodes with different diameters, but the cost increases.
[0011]
Furthermore, in order to attach the cylindrical electrode, a holding member made of synthetic resin, ceramic, or the like is separately required in the apparatus, which increases the number of parts, and also requires time and effort to attach the holding member to the holding member by means such as welding or adhesion. . There is also a problem that it is difficult to clean the electrode when dust is collected due to its shape.
[0012]
In addition, a linear electrode such as a tungsten wire has a problem that it has a short life and it is difficult to clean the dust collection.
[0013]
[Patent Document 1]
JP-A-11-19201.
[0014]
[Problems to be solved by the invention]
Therefore, the present invention eliminates the problems of the conventional electrodes, can cope with diversification of design, can be manufactured inexpensively and easily, and can generate negative ions and ozone that can sufficiently diffuse generated negative ions and ozone. It is an object to provide a generator. Furthermore, it is an object of the present invention to provide an electrical apparatus including such a negative ion / ozone generator.
[0015]
[Means for Solving the Problems]
The negative ion / ozone generator according to claim 1, wherein the positive electrode (1) is made of a metal plate having one or a plurality of holes (2) each having an upright portion (3) formed by burring in the periphery. The tip of the negative electrode is located near the hole (2) of the positive electrode (1).
[0016]
According to this, since the basic shape of the positive electrode (1) is a flat plate, it has a long life and is easy to manufacture and clean. In addition, since the positive electrode (1) can be directly attached to the apparatus without using a separate holding member, it is easy to manufacture the apparatus.
[0017]
In addition, it is possible to generate an air flow that can sufficiently diffuse negative ions and ozone generated during discharge due to the presence of the upright portion (3) provided around the hole (2) of the positive electrode (1). Therefore, it is not necessary to separately provide a blowing means such as a fan or a motor in the apparatus, and the apparatus can be downsized and noise can be prevented.
[0018]
In addition, it is easy to change the external shape of the positive electrode (1) and the position, number, size, etc. of the positive electrode (1) according to the design and performance of the device to be used. Is easy to deal with.
[0019]
The negative ion / ozone generator according to claim 2 has the negative electrode (5) in which one or a plurality of tip portions (6) are formed by bending a part of the metal plate. The tip of the tip (6) is sharp.
[0020]
According to this, since the basic shape of the negative electrode (5) is also plate-shaped, it becomes easier to attach the electrode in the apparatus. Further, the number of parts can be reduced as compared with the case of using a needle-like electrode as in the prior art, and the manufacture is easy.
[0021]
The negative ion / ozone generator according to claim 3 is the apparatus according to claim 2, wherein the positive electrode (1) and the negative electrode (5) are fixed via a spacer (8).
[0022]
According to this, since the positive electrode (1) can be carried on the negative electrode (5) via the spacer (8), the attachment to the apparatus is further facilitated. In addition, an appropriate distance between the positive electrode (1) and the negative electrode (5) can be easily maintained by the spacer (8).
[0023]
The negative ion / ozone generator according to claim 4 is the apparatus according to claim 3, wherein the positive electrode (1) is detachably attached to the spacer (8).
[0024]
Since the positive electrode (1) having a dust collecting function can be easily detached from the apparatus, even if the positive electrode (1) is contaminated by dust collection, it can be removed from the apparatus and easily cleaned by means such as washing and wiping.
[0025]
The negative ion / ozone generator electrode (1) according to claim 5 comprises a metal plate having one or a plurality of holes (2) each having an upright portion (3) formed by burring in the periphery. It is characterized by that.
[0026]
If this is used, the negative ion ozone generating apparatus according to claims 1 to 4 can be manufactured. Since the basic shape is a flat plate, it is easy to manufacture, mount and clean, and has a long life. The presence of the upright portion (3) can generate an air flow that can sufficiently diffuse negative ions and ozone during discharge. Further, since it is easy to change the outer shape, the position of the hole (2), etc., it is easy to make the shape suitable for the design of the apparatus.
[0027]
According to a sixth aspect of the present invention, there is provided an electrical apparatus comprising the negative ion / ozone generator according to the first to fourth aspects.
[0028]
According to this, since the negative ion / ozone generator of claims 1 to 4 can be miniaturized, has a high degree of freedom in design, and is easy to attach to the device, it is simply used as an air cleaner or deodorizer. Not only is it used, but it is also suitable for use in electrical equipment such as air conditioners, refrigerators, washing machines, lighting equipment, speakers, dehumidifiers, humidifiers, copiers, vacuum cleaners, and training equipment.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to preferred embodiments.
[0030]
[Example 1]
FIG. 1 is a plan view of the positive electrode (1) used in this embodiment, and FIG. 2 is an end view taken along the line aa ′.
[0031]
The positive electrode (1) is made of a steel plate having a thickness of 0.5 mm and has a titanium oxide coating on the surface to prevent oxidation. In the present embodiment, the planar shape of the positive electrode (1) is circular, but the shape is not limited to this, and is appropriately determined according to the design of the negative ion / ozone generator and the arrangement inside the device. That's fine. That is, it can be a plane shape such as a quadrangle, a triangle, an ellipse, a hexagon, a fan, or a star.
[0032]
The positive electrode (1) is provided with four holes (openings) (2), and an upright portion (3) is formed around the hole (2). Burring is suitable as a means for producing such a hole having the upright portion (3).
[0033]
The burring process is a process of forming a raised hole by punching a flat plate by means such as punching and stretching it into a cylindrical shape, but the raised part (3) is formed around the hole (2). As a means, a turret punch press may be used.
[0034]
The number, size, and arrangement of the holes (2) can be determined as appropriate in consideration of the size, design, negative ion, ozone generation amount, etc. of the negative ion / ozone generator. Since processing is easy even when positive electrodes having different positions, sizes, numbers, etc. of the holes (2) are made, it is possible to easily cope with design changes and function changes.
[0035]
The height of the upright part (3) was set to about 3 mm. If the rise is small (for example, about 1 mm), the generation of negative ions and ozone can be confirmed, but it is difficult to generate sufficient airflow, and a fan and a motor are separately required to send out negative ions and ozone. It will become. However, the fan is not preferable because it causes noise and enlargement of the apparatus as described above.
[0036]
Therefore, as a result of examining to generate a sufficient air flow without using a fan, it was found that an air flow with a sufficient wind speed can be obtained if the startup height is 3 mm.
[0037]
Theoretically, the higher the elevation (3), the easier it is to generate airflow. Moreover, if it is too high, the tip of the upright portion (3) may break in burring, so it is practically desirable to set it to 5 mm or less.
[0038]
In addition, instead of providing an upright part, it is conceivable to use a steel plate with a thickness of 3 mm or more to make a hole, but not only is the material cost high, but the weight of the steel plate makes it difficult to reduce the weight of the device. End up.
[0039]
In that respect, when the upright portion (3) is formed on a thin steel plate by burring or the like, the weight can be reduced and the processing becomes easy. In this example, the thickness of the positive electrode plate (1) was set to 0.5 mm in consideration of ease of burring, weight, and cost. Thickening makes it easier to process.
[0040]
In this embodiment, the shape of the hole (2) is circular in order to facilitate manufacture, but the shape of the hole (2) is different if the upright part (3) can be formed around the hole (2). For example, it may be a quadrangle or a triangle. In that case, since it is difficult to form the upright part (3) by burring, it is desirable to form it by welding another member.
[0041]
FIG. 4 is a plan view showing a state in which the negative electrode (5) has been punched from the flat steel plate. From this state, the tip (6) is folded at the folding position (6a). FIG. 5 is a front view showing a state where the tip end portion (6) is bent and completed. All four tip portions are bent about 90 ° on the same side.
[0042]
In the embodiment, the thickness of the negative electrode (5) is 0.5 mm. However, in the case where the electrode shape is elongated, a larger thickness, for example, 1 mm or more may be used to ensure the strength of the electrode.
[0043]
The tip (6) of the negative electrode (5) is preferably sharpened so that it can be easily discharged. Although it is easy to sharpen the tip by cutting as in this embodiment, of course, the tip may be sharpened by other means such as polishing.
[0044]
Since the basic shape of the negative electrode (5) is also plate-like, it can be fixed directly to the device. In addition, a plurality of needle-like electrodes, a holding member, and wiring connecting the needle-like electrodes as in the prior art are unnecessary, and the number of parts can be reduced, so that attachment to the apparatus is facilitated. Furthermore, design changes accompanying design changes and improvements are easy, and can be dealt with by simply changing the electrode shape to an appropriate shape.
[0045]
In this embodiment, it is manufactured by punching from one metal flat plate, but it may be manufactured by welding a plurality of metal members. For example, a cross-shaped negative electrode may be manufactured by crossing two members and welding or crimping the intersection.
[0046]
In the figure, (7) is a spacer mounting hole for mounting a spacer (8) described later.
[0047]
FIG. 6 is a diagram for explaining electrode arrangement and wiring. Since any electrode has a plate shape as a basic shape, it can be easily mounted, and can be directly fixed in the apparatus without using another holding member. Moreover, since the number of parts is small and the wiring is simple, the mounting work is easy.
[0048]
The positive electrode (1) can be directly fixed to the apparatus main body, but in this embodiment, the positive electrode (1) is fixed to the spacer (8) attached to the negative electrode (5). The spacer (8) maintains the distance between the positive electrode (1) and the negative electrode (5) so that they do not come into contact with each other, and the positive electrode (1) can be carried on the negative electrode (5). .
[0049]
FIG. 3 is a view showing a state in which a spacer attachment hole (4) used for attaching the spacer (8) to the positive electrode (1) shown in FIG. 1 is provided. Four rod-shaped members were used as the spacer (8), one end of which was inserted into the spacer mounting hole (7) of the negative electrode (5) and the other end was inserted into the spacer mounting hole (4) of the positive electrode (1). Engaged.
[0050]
In this embodiment, the positive electrode (1) is detachably attached to the spacer (8) in consideration of cleaning the positive electrode (1) having a dust collecting function.
[0051]
The spacer (8) is made of an insulating material, and as the material, synthetic resin, elastomer, ceramic or the like can be used. The shape, number and mounting position of the spacer (8) may be appropriately determined according to the shape and size of the electrodes (1) and (5).
[0052]
Regarding the arrangement of each electrode, the tip of the negative electrode (5) was opposed to the center of the hole (2) of the positive electrode (1) when assembled.
[0053]
The closer the distance between the negative electrode tip (6) and the positive electrode (1), the more likely negative ions and ozone are generated. In the case of a normal air cleaner, it is not preferable that the amount of ozone generated is too large. Therefore, in this embodiment, the distance between the two is set to 15 mm so that the amount of ozone generated is appropriate. However, in applications where a strong sterilizing power is required, since it is desired that the amount of ozone generated is large to some extent, the distance between them can be set to about 5 mm.
[0054]
When a high voltage is applied to both electrodes (1) and (5) by the high-voltage generator (10), the area around the tip (6) of the negative electrode (5) and around the hole (2) of the positive electrode (1) Corona discharge occurs between the upper part (3) and negative ions and ozone are generated.
[0055]
In the present embodiment, a sufficient air flow is generated by the discharge, so that the generated negative ions and ozone can be diffused without separately using a blower such as a fan or a motor. Since no air blower is used, no electric power is required for operating the air blower and no noise is generated. Negative ions and ozone in the air flow are released to the outside of the device through the hole (2), and contribute to air purification in the room.
[0056]
Charged dust, pollen, mold spores and the like adhere to the positive electrode (1). If the amount of attached dust increases, the positive electrode may be washed. The washing may be carried out with a water flow or may be wiped off with a nonwoven fabric or the like. If it is sucked with a vacuum cleaner in advance, cleaning is easy.
[0057]
Although the positive electrode (1) of the present embodiment has a hole (2) and a raised portion (3), but the basic shape is a flat plate, cleaning is easier compared to a cylindrical or linear electrode.
[0058]
Further, as described above, since the positive electrode (1) is detachable from the spacer (8) so as to be easily cleaned, it can be cleaned separately from the apparatus main body to which the negative electrode (5) is fixed. Since the positive electrode having a dust collecting function can be repeatedly used by cleaning, a disposable filter made of a nonwoven fabric is unnecessary and economical.
[0059]
The negative ion / ozone generator of the present embodiment may be used alone as an air purifier or a deodorizer, but is not limited to an air conditioner, refrigerator, washing machine, lighting equipment, speaker, dehumidifier, humidifier, It may be used by being incorporated in an electric device such as a copying machine, a vacuum cleaner, or a training device.
[0060]
[Example 2] (not shown)
In this example, a negative ion / ozone generator similar to that of Example 1 was manufactured except that a needle electrode was used as the negative electrode.
[0061]
Compared to the first embodiment, the same effect can be obtained in terms of the generation of negative ions and ozone. However, since a plurality of needle electrodes, their holding members, and wiring are necessary, the number of parts is inevitably increased. In that respect, the first embodiment is easier to manufacture.
[0062]
Further, since the negative electrode is needle-shaped, the spacer (8) cannot be attached. Therefore, in this embodiment, the spacer (8) can be attached to the member that holds the needle-like negative electrode.
[0063]
The same effects as those of the first embodiment can be obtained in that negative ions and ozone can be diffused without using a separate blower, and that the positive electrode can be easily attached, cleaned, and changed in shape.
[0064]
【The invention's effect】
As described above, by using the present invention, it is possible to easily and inexpensively produce a positive electrode that generates an air flow capable of diffusing generated negative ions and ozone. Moreover, since the basic shape is a flat plate, the life is long, it can be fixed easily without using a dedicated holding member, and cleaning is also easy.
[0065]
In addition, the positive electrode can be easily changed in its outer shape and does not require a blower such as a fan or a motor, so that the degree of freedom in designing the negative ion / ozone generator is improved and the size can be reduced.
[0066]
Furthermore, by taking advantage of such design diversity, miniaturization, and ease of installation, it becomes easy to incorporate negative ion / ozone generators into various electric devices such as air conditioners and dehumidifiers.
[Brief description of the drawings]
FIG. 1 is a plan view of a positive electrode.
FIG. 2 is an end view of a positive electrode.
FIG. 3 is a plan view of a positive electrode (with spacer mounting holes).
FIG. 4 is a plan view of a negative electrode (a state before the tip portion is bent).
FIG. 5 is a front view of a negative electrode.
FIG. 6 is a diagram for explaining electrode arrangement and wiring;
[Explanation of symbols]
(1) Positive electrode
(2) Hole (opening)
(3) Upright
(4) Spacer mounting hole
(5) Negative electrode
(6) Tip
(7) Spacer mounting hole
(8) Spacer
(10) High voltage generator

Claims (5)

A positive electrode holes which have a raised portion formed by burring around consisting single location or multiple locations provided metal plate,
Negative electrode whose tip is located near the hole of the positive electrode
And
A negative ion / ozone generator , wherein corona discharge is generated between the tip of the negative electrode and the upright portion . 2. The negative ion ion of claim 1, wherein one or more tip portions of the negative electrode are formed by bending a part of a metal plate, and the tip of the tip portion is sharp. Ozone generator. The positive electrode and the negative electrode and the negative ion ozone generator according to claim 2, characterized in that it is secured via a spacer 4. The negative ion / ozone generator according to claim 3, wherein the positive electrode is detachably attached to the spacer.   An electrical apparatus comprising the negative ion / ozone generator according to any one of claims 1 to 4.

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