KR101904939B1 - Electrode structure for ion generation, method for production same and ion generator using same - Google Patents

Abstract

TECHNICAL FIELD The present invention relates to an ion generating electrode structure, a method of manufacturing the ion generating electrode structure, and an ion generating device including the same.
Wherein the ion generating electrode structure comprises a ceramic substrate; And two electrodes respectively printed on both surfaces of the ceramic substrate. A discharge electrode is printed on one surface of the ceramic substrate, and a ground electrode is printed on the other surface of the ceramic substrate The discharge electrode includes a pattern frame, an electrode portion, and at least one discharge needle, and the ground electrode includes a pattern frame and an electrode portion.

Description

TECHNICAL FIELD The present invention relates to an electrode structure for generating ions, a method of manufacturing the same, and an ion generating device using the same. BACKGROUND OF THE INVENTION Field of the Invention [0001]

The present invention relates to an electrode structure for generating ions, a method of manufacturing the same, and an ion generating device using the same.

As the environmental pollution becomes serious, there is an increasing number of people who show various respiratory diseases or allergic reactions due to contaminated air. Accordingly, various attempts have been made to purify contaminated air by generating ions as means for increasing the quality of air, and a variety of household appliances that can be used at home are being mass-produced.

On the other hand, an ion has an anion and a cation, and the anion means a state where molecules such as oxygen or nitrogen in the air have a negative charge. It has been reported that the anion is not only very beneficial to the human body but also is effective in removing dust and odor. 2. Description of the Related Art In recent years, anion generating devices are attached to various home appliances such as air cleaners, hair dryers, and water purifiers.

The ion generating apparatuses known so far mainly use a corona discharge method, an electron emission method, a Leonard method, and an alpha ray method. Among them, the Leonard method and the alpha ray method are expensive in equipment, does not apply.

The corona discharge method is a phenomenon of discharge caused by unbalanced electric field (acupuncture plate, line-plate, etc.), which causes deterioration of the insulator in association with the action of ions during discharging and causes ions to collide with the metal, . In addition, harmful substances such as ozone and NO _x and SO _x , which are harmful by the corona discharge, are generated.

The electron emission type ion generating device emits electrons directly in the air by applying a pulsed high voltage to a needle (or tip) having a sharp end portion. The emitted electrons combine with surrounding air molecules to generate anions. The electron emission system is advantageous in that the amount of anion generated is much larger than the corona discharge system, and the amount of generated ozone can be suppressed by reducing the discharge area.

On the other hand, as described above, in the electron emission type ion generating device or the like, the sharp portion of the tip is often used because a higher voltage is applied to the tip of the needle even if the same voltage is applied. However, there are physical limitations to making the radius smaller to sharpen the needle. That is, due to the physical limitation of reducing the radius in the manufacture of needles, the amount of ions that can be generated with respect to the acupuncture area is small, and when the volume is increased in order to increase this amount, the power consumed in generating ions also becomes large.

In addition, the conventional negative ion generator has a problem in that ozone is inevitably generated as a by-product. On the other hand, in order to reduce the above-described generation of ozone, a low voltage should be used. In this case, however, the amount of generated negative ions is rather insufficient, so that the effect of purifying air originally intended can not be sufficiently achieved.

On the other hand, Japanese Patent Application Laid-Open No. 2005-71715 discloses that a negative / positive ion generator for purifying air by generating cations in addition to anions based on the fact that airborne bacteria in the air can not be effectively removed only by generating negative ions An air conditioning device is disclosed.

The present invention relates to an electrode structure for generating ions, which reduces the amount of ozone generated as a by-product during use, and prevents oxidation of the ion generating electrode to increase its service life, a method for manufacturing the same, and an ion generating device using the same.

The present invention relates to a ceramic substrate; And a discharge electrode on one side of the ceramic substrate, and a ground electrode on the other side of the ceramic substrate, the discharge electrode being formed on one surface of the ceramic substrate, And an electrode structure for ion generation is provided. The discharge electrode includes a pattern frame, an electrode portion, and at least one discharge needle, and the ground electrode includes a pattern frame and an electrode portion.

Wherein the pattern frame of the discharge electrode comprises a closed outer shape; And a closed inner figure connected to and located within said figure, said outer figure and said inner figure each comprising at least one discharge needle. Also, the ratio (K1 / K2) of the number of discharge needles (K1) placed in the external figure to the number (K2) of discharge needles located in the internal figure is 4 to 5.

The plasma display apparatus may further include a discharge barrier on a space between the outer and inner graphics forming the pattern frame of the discharge electrode on the ceramic substrate.

The electrode portion of the ground electrode and the electrode portion of the discharge electrode may be located at both extremes.

The present invention also provides a method of manufacturing a ceramic substrate, comprising the steps of: printing a discharge electrode and a ground electrode with metal oxide paste on both surfaces of a ceramic substrate, respectively; And firing at 800 to 850 占 폚. The metal oxide paste may be an oxidized silver paste.

The present invention relates to a device comprising: a housing having at least one opening; A high voltage generating unit disposed in the housing; And an ion generating portion disposed in the housing and electrically connected to the high voltage generating portion, wherein the ion generating portion may include the ion generating electrode structure described above.

The ion generating device including the ion generating electrode structure according to the present invention can prevent oxidation of the electrode, minimize the amount of generated ozone, and reduce the size of the power source pack. Further, the discharge is uniformly generated during the discharge, and the power consumption can be minimized.

1 is an exemplary schematic diagram of an electrode structure according to the present invention.
2 is an exemplary schematic view of a discharge electrode of the electrode structure.
3 is an exemplary schematic diagram of a ground electrode of the electrode structure.
4 is a graph of ozone concentration occurring over time during use of the ion generating device.
5 is a graph comparing the sterilizing performance of an air conditioner including the ion generating device manufactured according to Example 1 with a control group.

The ion generating electrode structure

According to the present invention, there are provided a ceramic substrate; And a discharge electrode on one side of the ceramic substrate and a ground electrode on the other side of the ceramic substrate, wherein the discharge electrode is formed on one surface of the ceramic substrate, ) Is printed on the surface of the electrode structure. In the present invention, the ceramic substrate may be replaced with an insulating dielectric substrate usable in the ion generating electrode structure.

The discharge electrode includes a pattern frame, an electrode portion, and at least one discharge needle, and the ground electrode includes a pattern frame and an electrode portion.

FIG. 1 illustrates a structure in which a ceramic substrate is omitted as an electrode structure for generating ions according to the present invention. Fig. 2 illustrates a discharge electrode printed on one side of a ceramic substrate, and Fig. 3 illustrates a ground electrode printed on the other side of a ceramic substrate. The numerical values shown in Figs. 2 and 3 are exemplary values in mm, and those having ordinary skill in the art can make changes within the scope of the present invention.

Referring to FIG. 1, the ion generating electrode structure 1 according to the present invention is characterized in that the pattern frame 12 of the discharge electrode 10 has a closed external shape; And a closed inner figure connected to and positioned within the figure, wherein the outer figure and the inner figure each include at least one discharge needle (16). The figure refers to a circle, an ellipse, a polygon, and the like, and is illustrated as a circle in Figs. 1 and 2. The external figure and the internal figure are arranged so as not to overlap each other. It is preferable that the external figure and the internal figure have the same shape for the arrangement.

(K1 / K2) of the number of discharge needles (K1) positioned in the outer shape to the number of discharge needles (K2) located in the inner figure is 4 To 5. When the ratio of the number of the discharge needles is within the above range, the amount of ions generated becomes maximum at the same applied voltage.

The discharge electrode of the above-described electrode structure for generating an ion is produced by printing a metal oxide paste. In the metal oxide paste, the metal material may be selected from the group consisting of tungsten, iron, copper, platinum and silver. Among these metal materials, silver is preferable. The discharge electrode can be printed with silver oxide paste. Since the silver oxide paste has a resistance value of 10 to 20 OMEGA, the discharge is easy due to the low resistance value, and the discharge can be uniformly generated in the entire electrode.

Therefore, the ion generating device including the electrode structure has a much higher ion generation amount than that of the conventional ion generating device, and specifically about 4 to 8 times that of the conventional needle electrode. In addition, the power consumption of the ion generating device including the electrode structure can be minimized to the range of 2 to 5 W because of the characteristics described above. Further, by using the silver oxide paste, since the silver oxide paste plays a role of suppressing the generation of ozone mainly generated around the discharge electrode, the amount of ozone generation is much smaller than that of the conventional ion generating device.

The discharge electrode also includes an electrode portion (14).

The discharge electrode may further include a discharge obstacle 18. The discharge obstacle may be printed by printing the same metal oxide paste as the discharge electrode and printed simultaneously with the discharge electrode. The discharge obstacle serves to prevent discharge interference between the discharge needle of the external shape and the discharge needle of the internal shape in the pattern portion at the time of discharge.

1 and 3, the ground electrode 20 of the ion generating electrode structure according to the present invention includes a pattern portion and an electrode portion 24. [ The ground electrode is manufactured by screen printing in the same manner as the metal oxide paste which is the same as the discharge electrode described above. The metal material of the metal oxide paste may be selected from the group consisting of tungsten, iron (Fe), copper (Cu), platinum and silver (Ag). Also in the ground electrode, the metal oxide paste is preferably an oxidized silver paste.

The electrode part (14) of the ground electrode and the electrode part (24) of the discharge electrode are opposed to each other and located at both extremes. Since the electrode portion of the ground electrode and the electrode portion of the discharge electrode are located at both ends, an interval between the electrodes can be maximized to prevent an abnormal discharge that may occur between the discharge electrode and the ground electrode.

Method of manufacturing electrode structure

A method of manufacturing an ion-generating electrode structure according to the present invention includes the steps of: printing a discharge electrode and a ground electrode with metal oxide paste on both surfaces of a ceramic substrate; And firing the obtained printed substrate at 800 to 850 캜.

The pattern printing step is manufactured by manufacturing a screen having shapes of a discharge electrode and a ground electrode, and printing the pattern on a ceramic substrate. A discharge electrode and a discharge obstacle are printed with a metal oxide paste on one surface (one surface) of the ceramic substrate, and a ground electrode is printed on the other surface (the other surface) of the ceramic substrate. The metal material of the metal oxide paste may be selected from the group consisting of tungsten, iron (Fe), copper (Cu), platinum and silver (Ag). The metal oxide paste is preferably an oxidized silver paste.

After the above-mentioned screen printing is completed, the ceramic substrate is fired at a temperature of about 800 to 850 ° C for 1 hour to 2 hours in a firing furnace, and after the firing is completed, the temperature is cooled in an air atmosphere,

The ion generating device including the electrode structure according to the present invention

An ion generating device comprising an electrode structure according to the present invention comprises: a housing having at least one opening; A high voltage generating unit disposed in the housing; And an ion generating part disposed in the housing and electrically connected to the high voltage generating part. The ion generating portion includes the ion generating electrode structure described above.

The housing may be integrally formed or may include a separate upper housing and a lower housing, and a high-voltage generating unit and an ion generating unit may be disposed in a predetermined space in the housing, respectively.

The ion generating portion includes a ceramic substrate and discharge electrodes and ground electrodes printed on both surfaces of the ceramic substrate, respectively. A discharge electrode is printed on one surface of the ceramic substrate, and a ground electrode is printed on another surface. In addition, discharge obstacles may be included. When the discharge obstacle is included, it is printed between the discharge electrodes. In addition, the electrode portions of the ground electrode and the discharge electrode are located at opposite ends in order to maximize a gap between the electrode portions. Since the description of the electrode structure including the ground electrode, the discharge electrode, and the discharge obstacle is the same as that described above, repeated description will be omitted.

The high-voltage generating unit includes a piezo ceramic transformer, an auto transformer, and the like. A cathode high voltage or an anode high voltage should be applied to the substrate electrically connected to the electrode structure, and the piezoelectric ceramic transformer performs the function of outputting such a high voltage.

In the above-described ion generating device, when a high voltage is applied to the electrode structure, a high electric field is formed around the electrode structure and free electrons passing around the electrode structure are accelerated by the electric field to collide with neutral molecules (oxygen, nitrogen, etc.) Thereby ionizing the molecule. In addition, ionized molecules act as condensation nuclei to form cluster ions after binding with moisture in the air. They form OH radicals by colliding at the surface of bacteria or viruses. The OH radical formed at this time combines with the hydrogen ion on the surface of the bacteria or virus to form a water molecule and performs a function of inactivating it. In addition, odorous substances such as cigarette smoke can be removed. Odorous substances such as cigarette smoke can be decomposed and removed by H ₂ O and CO ₂ harmless to human body through chemical reaction with generated OH radicals.

The ion generating device according to an embodiment of the present invention can simultaneously emit positive ions or negative ions, and the released ions act as nuclei for forming a cluster and prevent generation of secondary pollutants such as ozone and nitrogen oxides In addition to the deodorizing and sterilizing effect, it can continuously provide the air which is beneficial for the metabolism activity of the human body.

The driving principle of the ion generating device according to the present invention is that a DC 12 V input voltage is converted into a pulse type output voltage by a ceramic piezoelectric irradiation and a high voltage circuit and then is applied to an ion generating electrode to generate positive and negative ions. The input voltage of DC 12V provides a first boost to the ceramic transformer through the auto transformer and a high voltage of several kV through the second boost of the oscillated ceramic transformer. The output high voltage is applied to the ceramic discharge electrode to generate positive and negative ions.

The ion generating device according to the present invention as described above may be used alone or may be used by being attached to an air conditioner or the like. The air conditioner includes an air conditioner for a vehicle, a home air conditioner, and the like.

The ion generating device according to the present invention uses an existing ion generating device to generate ozone generated as a byproduct at the time of ion generation by controlling the surface resistance of the discharge electrode and ozone There is an advantage in that the amount of the gas can be reduced.

Further, the ion generating device according to the present invention can minimize power consumption. That is, as described in the description of the electrode structure according to the present invention, since the surface resistance between the ground electrode and the discharge electrode printed on the ceramic substrate is minimized and the discharge obstacle suppresses the discharge interference, So that the amount of generated ions is increased and the power consumption is minimized to within about 2W.

On the other hand, the ion generating device according to the present invention improves the durability of the electrode structure because it is resistant to abrasion of the electrode and external impact due to discharge due to strong bonding force with the ceramic substrate by firing the ceramic substrate printed with the metal oxide paste at high temperature. Effect.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

Example

Example  One

A silver oxide paste was produced, and a discharge electrode was formed on one surface of the ceramic substrate, and a ground electrode was printed on the other surface to produce an electrode structure. The external figures are circles of approximately 7 to 8 mm in size, and the internal figures are circles of 2 to 3 mm in size and arranged so that they do not overlap like concentric circles, but are electrically connected. There were 28 discharging needles on the outside and inside of the external figure and 6 discharging needles on the inside figure. The ratio of the discharge needle is about 4.67.

An ion generating device was manufactured using the electrode structure.

Comparative Example  One

A commercially available plasma ion generator (Samsung) was obtained as Comparative Example 1.

Comparative Example  2

A commercially available Nano-e ion generator (Panasonic) was obtained and used as Comparative Example 2.

Comparative Example  3

A commercially available Plasma Cluster Ion ion generator (Sharp Corp.) was obtained and used as Comparative Example 3.

Test Example  One

Experiment of ion generation

The ion generating device manufactured according to Example 1 and Comparative Examples 1 to 3 was operated in a chamber having a size of 6.6 square meters to measure the amounts of negative ions and positive ions. The results obtained are shown in Table 1.

Test Example  2

Comparison experiment of ozone generation

Using the same chamber as in Test Example 1, the ion generating device according to Example 1 and Comparative Examples 1 to 3 was operated, and the amount of generated ozone was measured. The results are shown in Table 1. The amount of ozone generated in the ion generating device according to Example 1 was separately measured and shown in Fig. As can be seen from FIG. 4, the ion generating device according to Example 1 did not exceed the maximum ozone concentration of 2.3 ppb over time.

Test Example  3

Sterilization  Speed test

In the same chamber as in Test Example 1, the ion generating device obtained in Example 1 and Comparative Examples 1 to 3 was installed, and the eradication rate of E. Coli was measured. The initial E. Coli population was approximately 10 ⁴ CFU, and the rate of eradication was expressed as the time at which E. coli was all sterilized after each ion generator operation. The results obtained are shown in Table 1 below.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Eradication rate
(E. Coli) 5 min 10 min 20 min 150 min Ozone concentration (ppb) 2 ppb 20 ppb 110 ppb 112.8 ppb Ion concentration
(counts / cc) (+) 8000K
(-) 10000K (+) 0.5K
(-) 500K 35K
(-) ion only occurs 300K

From Table 1, it can be seen that the ion generating device including the ion generating electrode structure according to the present invention has a significantly higher ion concentration than that of the ion generating device according to Comparative Examples 1 to 3, It can be confirmed that the occurrence is minimized.

Test Example  4

In order to measure the sterilizing performance of the ion generating device, the residual ratio of E. coli was measured for each time period and is shown in FIG. An air conditioner including the ion generating device obtained in Example 1 was prepared and a plate inoculated with E. coli in the same chamber as that used in Test Example 1 was placed. (AC) _On / ion generator (NPi) _On) and control group 1 (air conditioner (AC) _On / ion generator (NPi) _Off) and control group 2 And the remaining percentage of microorganisms was measured. It was confirmed that when both the air conditioner and the ion generating device were operated by the air conditioner including the ion generating device obtained in Example 1, a sterilizing effect of 99.9% was obtained in one hour.

Therefore, from the above-mentioned experiment, it can be confirmed that the ion generating device including the ion generating electrode structure according to the present invention has an excellent increase in the amount of generated ions, excellent sterilizing effect, and minimized ozone generation.

1: Electrode structure for generating ions
10: discharge electrode
12: pattern part of discharge electrode
14: electrode part of discharge electrode
16: discharge needle of discharge electrode
18: discharge obstacle
20: ground electrode
24: electrode portion of the ground electrode

Claims (8)

A ceramic substrate; And an electrode structure for ion generation comprising two electrodes respectively printed on both surfaces of the ceramic substrate,
A discharge electrode is printed on one side of the ceramic substrate and a ground electrode is printed on the other side of the ceramic substrate and the discharge electrode includes a pattern frame, Wherein the ground electrode includes a pattern frame and an electrode portion, and the pattern frame of the discharge electrode comprises a closed outer shape; And a closed inner figure connected to and located within said figure, said outer figure and said inner figure each comprising at least one discharge needle,
Wherein the discharge electrode further comprises a discharge barrier in a space between the outer and inner graphics forming the pattern frame. delete The method according to claim 1,
Wherein the ratio (K1 / K2) of the number of discharge needles (K1) placed in the external figure to the number (K2) of discharge needles located in the internal figure is 4 to 5. delete The method according to claim 1,
Wherein the electrode portion of the ground electrode and the electrode portion of the discharge electrode are located at both ends. Printing a discharge electrode and a ground electrode with metal oxide paste on both surfaces of the ceramic substrate, respectively; And
And firing at 800 to 850 占 폚. The method according to claim 6,
Wherein the metal oxide paste is an oxidized silver paste. A housing having at least one opening;
A high voltage generating unit disposed in the housing; And
And an ion generating part disposed in the housing and electrically connected to the high voltage generating part, wherein the ion generating part comprises the ion generating electrode according to any one of claims 1, 3, and 5, Structure. ≪ / RTI >

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