JP2835480B2 - Gas purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cleaning apparatus, and more particularly, to a gas purifying apparatus which utilizes an electrochemical phenomenon such as electric wind and electrostatic attraction force more actively and more efficiently. The present invention relates to a gas cleaning device capable of improving dust collection efficiency with stable operation and, in particular, improving deodorization efficiency to a very high level.

[0002]

2. Description of the Related Art Conventionally, this type of gas purifying apparatus has
There is one disclosed in JP-A-63-59963.

That is, as shown in FIG. 3, the gas purifying apparatus disclosed in the above-mentioned publication discloses a pair of positive and negative ionizing electrodes 11 and a ground 1.
And a platinum-impregnated honeycomb-shaped ceramic is used as the negative electrode 11a of the ionization electrode 11,
The positive electrode 11b has a configuration using a comb-shaped electrode.

[0004] The gas cleaning apparatus 13 having the above-described structure is used.
When a high DC voltage 14 is applied to the pair of positive and negative ionization electrodes 11, a corona discharge occurs between the pair of positive and negative ionization electrodes 11, and the gas near the ionization electrodes 11 is ionized.

Further, the gas ionized as described above is:
Move as an ion stream toward the negative electrode 11a (arrow A)
Gas convection is induced via the ion flow,
In addition, a gas flow passes through the inside of the negative electrode 11a, and fine particles such as fine dust and odor contained in the gas flow are charged to positive electricity by the electric field of the positive electrode 11b. Then, the negative electrode 11a is attracted to the negative electrode 11a by the negative electric force.

Accordingly, by the above series of repetitions, gas containing fine particles such as fine dust and odor is filtered and discharged (arrow B) while passing through the negative electrode 11a, thereby being cleaned. It becomes.

[0007]

However, the gas cleaning apparatus having the above-described structure has the following problems.

That is, the ionizing electrode 11 of the gas cleaning apparatus having the above-described structure applies a negative voltage to a so-called dust collecting electrode for adsorbing fine particles such as fine dust and odor in the gas. In addition, a positive voltage is applied to an electrode for corona discharge for generating electric wind.

Therefore, a large amount of secondary electrons are emitted by the collision of ion particles and electrons with the positive electrode for discharge having a high current density, so that a so-called electron avalanche phenomenon easily occurs.

For this reason, the pair of positive and negative ionization electrodes 11
In addition to the unstable corona discharge that occurs between them, spark discharge is likely to occur, making it difficult not only to increase the electric field strength of each electrode unit to improve dust collection efficiency, but also to be affected by electron flow and the like. Some of the fine particles are difficult to be adsorbed because the dust collecting electrode is applied with a negative voltage, and the dust collecting efficiency of the dust collecting electrode is also reduced.

Accordingly, in order to improve the dust collection efficiency of the fine particles in the gas, it is necessary to reduce the size of the through-hole 15 in the honeycomb portion or the like through which the gas flow of the dust collecting electrode passes. In addition, there has been a very serious problem that it is difficult to maintain a highly stable and highly efficient dust collecting operation due to various restrictions in terms of electrical and structural aspects.

However, the present invention solves all of the above problems, and does not cause any avalanche phenomenon, and the structure of the electrode for dust collection is highly stable and high without any particular restrictions. It is an object of the present invention to provide an extremely excellent gas purifying apparatus capable of maintaining an efficient dust collection operation.

[0013]

That is, according to the present invention, there is provided a needle-shaped electrode 2 and at least one through-hole 6 which is opposed to the needle-shaped electrode 2 and extends along the tip direction of the needle-shaped electrode 2. In the gas cleaning apparatus provided with the provided dust collecting electrode 3, the needle electrode 2 is negatively applied and the dust collecting electrode main body 3 is applied.
a comprises a positive electrode portion 4 positively applied to the surface facing the needle electrode 2 and a dust collecting portion 5 integrally provided with the positive electrode portion 4; 3a is provided in the gas cleaning device main body 1a in a detachable manner.

The positive electrode part 4 and the dust collecting part 5 are joined alternately to form the dust collecting electrode body 3a.

[0015]

In the gas cleaning apparatus having the above-mentioned structure, the needle-shaped electrode 2 is opposed to the needle-shaped electrode 2, and
And a dust-collecting electrode 3 having at least one through-hole 6 formed along the tip direction of the dust-collecting device. The electrode body 3a includes a positive electrode portion 4 positively applied to a surface facing the needle electrode 2 and a dust collecting portion 5 provided integrally with the positive electrode portion 4. Since the electrode main body 3a is detachably provided on the gas cleaning apparatus main body 1a, the electron current and the ion current generated between the needle-shaped electrode 2 and the dust collecting electrode main body 3a are set in the same direction, and By using the needle-shaped electrode 2 on the electron emission side, which is the negative electrode, the current density at the tip can be sufficiently increased, so that not only a stable and wide electric field region can be created, but also the stable and strong electric field region. Dust and smell without using any special dust filter The collected dust such as particles can be collected through the dust collecting electrode main body 3a, and even when the dust collecting electrode main body 3a is contaminated with the collected dust, the dust collecting electrode can be instantaneously collected. The main body 3a can be detached from the gas purifying apparatus main body 1a to remove dust particles, attached to the gas purifying apparatus main body 1a again, and used repeatedly.

Further, by increasing the area of the positive electrode portion 4 facing the needle electrode 2 of the above-mentioned dust collecting electrode body 3a, the receiving area of the electron flow is widened and the electron inrush density is lowered, so that the electron inrush density is reduced. A stable corona discharge is maintained without avalanche.

Further, since the dust collecting electrode body 3a, which performs the action of sucking electric wind and adsorbing fine particles such as dust and odor, is positively applied, the fine particles such as dust and odor are affected by the electron current. Is more strongly adsorbed to the dust collecting electrode main body 3a, and particularly, the odorous fine particles are removed through the chemical properties of the zeolite, activated carbon or the dust collector containing the activated carbon used in the dust collecting part 5. Can deodorize more strongly.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a gas purifying apparatus according to an embodiment of the present invention, in which zeolite is used for a dust collecting portion and a dust collecting surface.

In FIG. 1, reference numeral 1 denotes a gas cleaning device formed in a substantially rectangular shape via a molding material such as a synthetic resin.
Denotes a gas cleaning device main body.

Reference numeral 2 denotes a needle-shaped electrode provided near the gas inlet 1b formed in the gas cleaning device main body 1a and having a sharp tip.

The needle-shaped electrode 2 is erected on the negative electrode face member 9a to which a high voltage is applied negatively, and the negative electrode face member 9a
Is provided integrally on at least one side of a dust collecting surface body 9b formed of zeolite mainly composed of silicic acid and aluminum oxide, and furthermore, the negative electrode surface body 9a near the needle electrode 2 and the dust collecting surface body 9b. Each of the face bodies 9b is provided with a through-hole 10 for gas introduction penetrating therethrough to form a dust collection negative electrode 9.

Reference numeral 3 denotes a dust collecting electrode 3 which is opposed to the needle-shaped electrode 2 and has four through holes 6 formed along the tip direction of the needle-shaped electrode 2. Is positioned at a predetermined distance from the needle electrode 2 so as to have the best electrolysis range (arrow C).

The dust collecting electrode body 3 of the dust collecting electrode 3
a is integrally formed by a positive electrode portion 4 positively applied to a surface facing the needle electrode 2 and a dust collecting portion 5 formed of the zeolite having the positive electrode portion 4, and The positive electrode portion 4 and the dust collecting portion 5 are alternately and integrally joined to form a dust collecting electrode main body 3a, and a predetermined attaching means (not shown) to the gas cleaning device main body 1a. It is detachably attached via the.

Numeral 8 is provided near the opening of the through-hole 6 of the dust-collecting electrode main body 3a which does not face the needle-like electrode 2, and removes gas discharged through the through-hole 6 from the gas cleaning device 1. And a zeolite having the positive electrode face body 8a and a positive electrode face body 8a positively applied to the gas discharge port 1c provided at the end of the upper surface of the first electrode. It is formed integrally with the dust collecting surface body 8b, and has two upper and lower stages to receive the gas discharged from each of the two upper and lower through holes 6 separately.
3 shows an exhaust gas guide dust collecting electrode plate inclined at an angle of degrees;

The gas cleaning apparatus of the present embodiment has the above-described configuration. Next, the case where such a gas cleaning apparatus is used will be described.

First, as shown in FIG. 1, in the gas cleaning apparatus having the above structure, the needle-shaped electrode 2 is negatively applied,
The dust collecting electrode main body 3a is integrally formed by a positive electrode portion 4 positively applied to a surface facing the needle electrode 2 and a dust collecting portion 5 formed of zeolite having the positive electrode portion 4. Therefore, the electron flow and the ion current generated between the needle electrode 2 and the dust collecting electrode main body 3a are set in the same direction, and the electron emission side, which is the negative electrode, is set as the needle electrode 2. As a result, the current density at the tip can be sufficiently increased, and not only can a stable, strong and wide electric field region be created.
The stable and wide electric field allows dust and fine particles such as odors to be collected through the dust collecting electrode main body 3a without using any special dust collecting filter or the like. Even when the dust collecting electrode main body 3a is contaminated with dust, the dust collecting electrode main body 3a is instantaneously removed from the gas cleaning device main body 1a to remove the dust collecting material, and attached again to the gas cleaning device main body 1a. Can be used repeatedly.

Further, by increasing the area of the positive electrode portion 4 facing the needle electrode 2 of the above-mentioned dust collecting electrode main body 3a, the area for receiving the electron flow is widened and the electron inrush density is lowered, so that the electron inrush density is reduced. A stable corona discharge is maintained without avalanche.

Further, since the dust collecting electrode body 3a, which performs the action of sucking electric wind and adsorbing fine particles such as dust and odor, is positively applied, the fine particles such as dust and odor are affected by the electron current. Is more strongly adsorbed to the dust collecting electrode main body 3a, and particularly, odorous fine particles can be deodorized more strongly through the chemical properties of zeolite.

In the above embodiment, the needle-shaped electrodes are erected on the negative electrode surface applied with a high voltage negative, and the negative electrode surface is formed of zeolite mainly composed of silicic acid and aluminum oxide. At least on one side of the dust collecting surface member, and the negative electrode surface member and the dust collecting surface member in the vicinity of the needle electrode are respectively provided with through holes for gas introduction penetrating each other. By constructing the dust collecting negative electrode with a hole formed, not only fine dust in the gas, but also particularly odorous fine particles can be captured through the dust collecting surface body formed of zeolite, but not necessarily. It is not limited to zeolite, and may be formed of activated carbon or a dust collector containing the activated carbon, and may be a rubbery or foamed elastic body further containing activated carbon. Contains carbon At best, the specific material of the applied needle electrodes Matamake, shape, thickness, distribution 設箇 plants, is not limited in any way be the quantity or the like.

Further, in the above embodiment, the dust collecting electrode facing the needle-like electrode and having four through holes formed along the tip direction of the needle-like electrode is the needle-like electrode in advance. The needle electrode is positioned at a predetermined distance from the needle electrode so as to have the best electrolysis range with the electrode, and the electrode body for dust collection of the electrode for dust collection has a positive surface on the surface facing the needle electrode. The positive electrode portion and the dust collecting portion provided with the positive electrode portion are integrally formed with the applied positive electrode portion, and the positive electrode portion and the dust collecting portion are alternately and integrally joined to form the gas cleaning part. Although it is provided detachably on the main body of the apparatus, the point is that if it can have the best electrolysis range with the needle electrode, for example, as shown in FIG. The electrode body for dust collection is composed of two layers, a positive electrode part positively applied to the surface and a dust collecting part having the positive electrode part. And only one through-hole may be formed. Further, the through-hole may have a rectangular lattice shape as shown in FIG. It is not limited in any way. Further, as shown in FIG. 3 (c), a part 4a of the positive electrode portion 4 is formed along the guide through hole 7 formed in the dust collecting electrode main body 3a. Although it is possible to have a greater electrostatic effect by being inserted into the portion 5, the dust collecting portion does not necessarily need to be formed of zeolite, but is formed of activated carbon or a dust collector containing the activated carbon. Needless to say, the dust collecting portion may be a rubbery or foamed elastic body containing activated carbon, and the presence or absence of carbon is not limited.

Further, in the above embodiment, the gas discharged through the through-hole is provided near the opening of the through-hole of the dust-collecting electrode main body which is not opposed to the needle-shaped electrode. A positive electrode face body that can be guided to a gas discharge port at an upper end of the main body and is positively applied to a surface facing the through hole, and a dust collecting face body formed of zeolite including the positive electrode face body An exhaust gas guide dust collecting electrode plate integrally formed is provided, and the dust collecting surface body may be formed of activated carbon or a dust collecting body containing the activated carbon. May be a rubber-like or foam-like elastic body containing activated carbon, and it is needless to say that the presence or absence of carbon is by no means limited, and further, the exhaust gas guide dust collecting electrode plate corresponds to each of the through holes. The exhaust gas guide The positive electrode face body and the dust collection face body constituting the dust collection electrode plate may be joined alternately to form a plurality of layers, and the shape, arrangement quantity, and inclination of the exhaust gas guide dust collection electrode plate may be different. It goes without saying that the presence / absence is not limited at all, and it goes without saying that the presence / absence of the exhaust gas guide dust collecting electrode plate is not necessarily an essential requirement in the present invention.

However, the configuration of the driving circuit constituting the gas cleaning apparatus according to the present invention, the devices used, the types and functions thereof, and the type of power source for driving each circuit, etc., are also batteries, rechargeable, AC, DC Regardless of the type, the specific type, material, and shape of each electrode except the needle-shaped electrode are not necessarily limited to solids such as metal, and may be, for example, a liquid containing a conductive material. The bonding of each electrode to the dust collecting portion or the dust collecting surface body may be any of vapor deposition, baking, coating, etc., and other locations and numbers of gas inlets and gas outlets provided in the gas cleaning device. The shape, shape, and specific configuration such as the shape of the gas cleaning device can all be freely changed within the intended range of the present invention.

[0033]

As described above, the present invention relates to a collecting electrode having a needle-like electrode and at least one through hole formed along the tip of the needle-like electrode and facing the needle-like electrode. In a gas cleaning apparatus provided with a dust electrode, the needle electrode is negatively applied and the dust collection electrode body is positively applied to a surface facing the needle electrode. And a dust collecting portion integrally provided with the positive electrode portion, and furthermore, since the dust collecting electrode body is detachably provided on the gas cleaning device main body, the dust collecting electrode body and the dust collecting portion are detachably provided. By making the electron flow and the ion flow generated between the dust electrode main body and the ion flow in the same direction, and making the electron emission side, which is the negative electrode, a needle-like electrode, the current density at the tip can be sufficiently increased and, therefore, stable. Not only can a strong and wide electric field be created, but also the special It is possible to collect dust and fine particles such as odors through the dust collecting electrode body without using a filter or the like at all, and when the dust collecting electrode body becomes dirty with the dust collecting substance. In addition, the dust collecting electrode main body can be instantaneously removed from the gas purifying apparatus main body to remove the dust collected, and attached again to the gas purifying apparatus main body to be used repeatedly.

Further, by increasing the area of the positive electrode portion facing the needle-shaped electrode of the above-mentioned dust collecting electrode body, the area for accepting the electron flow is increased and the electron intrusion density is reduced, thereby reducing the avalanche phenomenon. A stable corona discharge can be maintained without causing.

Further, since the dust collecting electrode body which performs the action of sucking electric wind and adsorbing fine particles such as dust and odor is positively applied, the fine particles such as dust and odor which are affected by the electron current are reduced. In addition to being more strongly adsorbed to the dust collecting electrode main body, particularly odorous fine particles are more strongly absorbed through the chemical properties of zeolite, activated carbon or a dust collector containing the activated carbon used in the dust collecting portion. Can be deodorized.

Therefore, a highly stable and highly efficient dust collection operation of fine particles can be maintained without causing an avalanche phenomenon at all and without restricting the structure of the electrode for dust collection. In addition, the present invention has an extraordinary effect that the dust collection efficiency can be improved by a more stable operation than in the past, and an extremely excellent gas cleaning device capable of improving the deodorization efficiency extremely high can be provided.

[Brief description of the drawings]

FIG. 1 shows a gas cleaning apparatus according to an embodiment of the present invention. FIG. 1A is a schematic explanatory view, and FIG.
FIG.

FIGS. 2A and 2B are perspective views and FIGS. 2C and 2C are cross-sectional views showing another embodiment of the dust collecting electrode of the gas cleaning apparatus of the present invention. FIGS.

FIG. 3 is a schematic explanatory view of a conventional gas cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Gas cleaning apparatus 1a ... Gas cleaning apparatus main body 2 ... Needle electrode 3 ... Dust collecting electrode 3a ... Dust collecting electrode main body 4 ... Positive electrode part 5 ... Dust collecting part 6 ... Through hole 7 ... Guide through hole 8 ... Dust collecting electrode for exhaust gas guide 9 ... Negative dust collecting electrode

Claims (7)

(57) [Claims] 1. A needle-shaped electrode (2), and at least one through-hole (6) facing the needle-shaped electrode (2) and extending along a tip end of the needle-shaped electrode (2). In the gas cleaning apparatus provided with the dust collecting electrode (3), the needle electrode (2) is negatively applied, and the dust collecting electrode body (3a) is connected to the needle electrode (3). A positive electrode portion (4) positively applied to the surface opposite to (2) and a dust collecting portion (5) integrally provided with the positive electrode portion (4); (3a) The gas cleaning apparatus characterized by being provided detachably on the gas cleaning apparatus main body (1a). 2. A gas cleaning apparatus according to claim 1, wherein said positive electrode portion and said dust collecting portion are alternately joined to form said dust collecting electrode body. . 3. A part (4a) of the positive electrode part (4) is:
3. The gas cleaning device according to claim 1, wherein the gas purifying device is embedded or inserted into the dust collecting portion (5) along a guide through hole (7) formed in the dust collecting electrode main body (3 a). 4. 4. The gas cleaning device according to claim 1, wherein the dust collecting portion is formed of zeolite. 5. The gas purifying apparatus according to claim 1, wherein the dust collecting portion is formed of activated carbon or a dust collecting body containing the activated carbon. 6. A gas discharged through the through-hole (6) near the opening of the through-hole (6) of the dust-collecting electrode body (3a) that is not opposed to the needle-like electrode (2). Electrode body (8a) and the positive electrode body (8a), which can guide in a predetermined direction, and are positively applied to the surface facing the through hole (6).
A dust collecting electrode plate (8) for guiding exhaust gas integrally formed with a zeolite or activated carbon or a dust collecting surface body (8b) formed of a dust collecting body containing the activated carbon. Item 6. The gas cleaning apparatus according to any one of Items 1 to 5. 7. The needle-like electrode (2) is erected on a negatively applied negative electrode face body (9a), and the negative electrode face piece (9) is erected.
a) is integrally provided on at least one surface side of a dust collecting surface body (9b) formed of zeolite or activated carbon or a dust collecting body containing the activated carbon, and in addition to the vicinity of the needle electrode (2). 7. The dust collecting negative electrode 9 is formed by forming a through hole (10) through which gas is introduced into each of the negative electrode face body (9a) and the dust collecting face body (9b). The gas cleaning device according to any one of the above.