KR20030075704A - Electric dust collecting filter of air cleaner - Google Patents

Abstract

PURPOSE: An electric dust collecting filter of an air cleaner is provided to reduce entire size of a collector and the dust collecting filter without forming another insulation layers in metal meshes and forming another ground electrode within the collector, thereby easily setting a layout of the air cleaner. CONSTITUTION: An ionizing unit(51) electrifies fine dust included in the air by using a high voltage. A collector(52) installed in back direction of the ionizing unit(51) absorbs the electrified dust by using an electric repulsive force. Metal meshes(53) installed on both sides of the collector(52) are connected to a ground. The ionizing unit(51) comprises as follows. Wire-shaped discharge electrodes(51a) have plus polarity when a high voltage is applied. Many discharge corresponding electrodes(51b) form ionizing lines(51c) between the discharge electrodes(51a), by being connected to the ground.

Description

Electric dust collecting filter of air cleaner {Electric dust collecting filter of air cleaner}

The present invention relates to an electric dust collecting filter installed inside the air purifier to ionize fine dust and then to collect the ionized dust by using the repulsive force of the charge. In particular, the collecting unit and the ionizing unit without installing a separate insulating layer The present invention relates to a dust collecting filter of an air purifier that can insulate between collection sections.

In general, the air purifier is coupled to the cabinet 1 having a discharge opening 1 'formed at an upper surface thereof and having an open front surface as shown in FIGS. 1 and 2, and a front opening portion of the cabinet 1. A suction grill (2) having a suction port (2 ') through which the air is sucked, a blower (7) mounted inside the cabinet (1) for forcibly circulating outside air into the cabinet (1), and the suction An air filter 3 disposed on the rear surface of the grill 2 to filter out bulky dust in the sucked air, and a dust collector to ionize and collect dust in the air sucked into the rear of the air filter 3 at a high voltage. A filter 4, a voltage generator 8 for applying a high voltage to the dust collecting filter 4, and titanium oxide disposed at the rear of the dust collecting filter 4 and activated by light energy are applied to the net body to deodorize. Photocatalyst filter 5 and an inner space of the cabinet 1 The filter chamber is divided into a blowing chamber in which the blower 7 is arranged, a filter chamber in which the dust collecting filter 4 and the photocatalyst filter 5 are arranged, and a barrier 6 in which a blowing hole 6 'is formed in the center.

The air cleaner configured as described above allows external air to be sucked in accordance with the operation of the blower to be discharged into clean air by various filters.

When power is applied to the blower 7 and the dust collecting filter 4 installed inside the cabinet 1, the blower 7 is driven to suck the outside air. The outside air is introduced through the intake port 2 'formed in the suction grill 2, and then a relatively large dust is filtered through the air filter 3, and then the dust is filtered through the dust collecting filter 4. do.

Here, the dust collecting filter 4 forms an electric field as power is applied to ionize the fine dust passing therethrough, and then removes the fine dust contained in the air by adsorbing the ionized dust using electrical repulsive force. Therefore, the dust content of the air passing through the dust collecting filter 4 becomes extremely lean. The air passing through the dust collecting filter 4 passes through the photocatalyst filter 5, and the photocatalyst filter 5 deodorizes by using titanium oxide activated by the light energy generated by the dust collecting filter 4. .

Through this process, the air from which the dust and the odor have been removed is introduced into the cabinet 1 through the ventilation holes 6 'formed in the barrier 6, and then discharged again to the outside of the apparatus through the discharge port 1'. . In other words, after introducing the outside polluted air into the inside of the apparatus, by using the filters (3, 4, 5) to remove dust and odors to create a clean air to discharge again.

As a result, the most important part of the air purifier is the filter (3, 4, 5) part, the air filter (3) is not technically significant because it only serves to filter out large dust, the photocatalyst filter (5) also There is no technical difficulty other than photocatalyst technology because it only performs the function of removing odor. However, only the dust collecting filter 4 which adsorbs fine dust by using electricity can be applied to various techniques in its structure and the like.

As shown in FIG. 3, the conventional dust collecting filter 30 is provided with an ionizing unit 31 which charges fine dust contained in air that is passed using a high voltage, and is installed at the rear of the ionizing unit 31 so as to have electrical repulsive force. And an collecting mesh 32 for adsorbing charged dust by using suction force, and an insulating mesh 34 interposed between the ionizing portion 31 and the collecting portion 32 to insulate the two.

The ionizing part 31 is connected to the voltage generating part 40 and is fixed so that the wire-shaped discharge electrode 31a and the discharge electrode 31a are respectively interposed when a high voltage of 5 to 7kv is applied. It is composed of a plurality of discharge-responsive electrodes 31b disposed at intervals and connected to ground to form an ionization line 31c between the discharge electrodes 31a. In addition, the collecting unit 32 collects dust (A) charged in the ionizing unit 31 and connected to the ground and the collecting electrode (32a), and the dust charged in the ionizing unit (31) When a high voltage of 2 to 3kv is applied from the voltage generator 40 so as to accelerate to 32a), it has a positive polarity and consists of an acceleration electrode 32b coated with an insulator 32c on its outer surface.

By the way, since the discharge electrode 31a of the ionizing part 31 and the acceleration electrode 32b of the collecting part 32 exhibit positive polarity, the distance between the ionizing part 31 and the collecting part 32 is If it is narrow, electrical interference may occur between the discharge electrode 31a and the acceleration electrode 32b. In order to avoid such electrical interference, an insulating mesh 33 is provided between the ionizing part 31 and the collecting part 32.

In the conventional dust collecting filter configured as described above, the fine dust contained in the air passing through the ionizing unit is charged, and then the charged dust is adsorbed using the repulsive force and the adsorptive force of the charge in the collecting unit.

The air passing through the air filter contains only fine dust, which is charged while passing through the ionizing unit 31. That is, an electric field formed by the ionization line 31c is formed between the discharge electrode 31a of the ionizing portion 31 and the discharge counter electrode 31b. The fine dust contained in the air passing through the electric field is formed by the ionization line. It is charged to the positive pole.

The air containing the dust charged to the (+) pole passes through the insulating mesh 33 and then moves to the collecting part 32. Fine dust contained in the air moved to the collecting unit 32 is adsorbed to the collecting electrode 32a connected to the ground. This is based on the adsorption force between charges. Since the collecting electrode 32a connected to the ground has a negative polarity, the dust charged to the positive electrode is adsorbed. In addition, since the accelerating electrode 32b of the collecting portion 32 has a (+) polarity, a repulsive force is generated against the fine dust charged to the (+) pole, whereby the fine dust is pushed away from the accelerating electrode 32b. And it is adsorbed by the collection electrode 32a.

Therefore, the air passing through the collecting part 32 is in a state in which fine dust is almost removed, and when the odor component contained in the air is removed by the photocatalyst filter, the air becomes a very clean state and is discharged to the outside of the apparatus.

However, the conventional electric dust collecting filter configured as described above has a problem in that the installation area is increased due to the coating of the insulator as well as the insulator on the acceleration electrode of the collecting unit separately from the insulating mesh installed between the ionizing unit and the collecting unit.

The present invention has been made to solve the above-mentioned problems of the prior art, the electric dust collecting filter of the air purifier to expand the collecting area by making dust collection by diffusion without coating the insulator on the acceleration electrode of the collecting unit The purpose is to provide.

1 is a perspective view of a general air purifier,

2 is an exploded perspective view of a general air purifier;

3 is a cross-sectional view schematically showing the internal structure of a conventional dust collecting filter,

4 is a cross-sectional view schematically showing an electric dust collecting filter of the air purifier according to the present invention.

<Explanation of symbols on main parts of the drawings>

51: ionizing part 51a: discharge electrode

51b: discharge electrode 51c: ionization wire

52: collecting portion 52a: acceleration electrode

52b: absorbent 53: metal mesh

The present invention for solving the above technical problem is an ionizing unit for charging the fine dust contained in the air passing through the use of high voltage, and the collecting unit which is installed in the rear of the ionizing unit adsorbs the charged dust by using the electric repulsive force And, characterized in that the metal mesh is installed on both sides of the collecting unit and connected to the ground.

In addition, the collecting part is characterized by consisting of a wire-shaped acceleration electrode to which a high voltage of (+) polarity is applied, and an adsorption material of electrostatic material which is installed on both sides of the acceleration electrode and adsorbs charged dust.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 4, the electric dust collecting filter of the air purifier according to the present invention is provided with an ionizing unit 51 which charges fine dust contained in the air passing by using a high voltage, and is installed at the rear of the ionizing unit 51. And a collecting unit 52 for adsorbing charged dust using electrical repulsive force, a metal mesh 53 installed at both sides of the collecting unit 52 and connected to ground, and a case for supporting them, respectively.

The ionizing unit 51 is connected to the voltage generating unit 60 and is fixed so that the wire-shaped discharge electrode 51a and the discharge electrode 51a are respectively interposed when a high voltage of 5 to 7kv is applied. It is composed of a plurality of discharge corresponding poles (51b) disposed at intervals and connected to ground to form an ionization line (51c) between the discharge electrode (51a). In addition, the collecting part 52 is formed of a wire-shaped acceleration electrode 52a to which a high voltage of (+) polarity is applied, and an electrostatic material that adsorbs charged dust on both sides of the acceleration electrode 52a, respectively. It consists of the adsorption material 52b.

In this case, the absorbent material 52b may be formed of an electrostatic polyurethane foam material, and the metal mesh 53 may be formed of an aluminum material. The use of aluminum as the material of the metal mesh is because the conductivity is light and cheap.

The electric dust collecting filter of the air cleaner according to the present invention configured as described above is to be insulated in the collecting portion without using a separate insulating layer.

Air passing through the air filter on the suction grill side passes through the electric dust collecting filter, and fine dust is adsorbed. That is, air is charged while passing through the ionizing portion 51, and dust is adsorbed while passing through the collecting portion 52. An electric field formed by the ionization line 51c is formed between the discharge electrode 51a of the ionizing portion 51 and the discharge counter electrode 51b, and the fine dust contained in the air passing through the electric field is positively induced by the electric field. It is charged to the pole.

The air containing the dust charged to the (+) pole is moved to the collecting unit 52, in which the electrical repulsive force is formed against the dust charged to the (+) pole due to the acceleration electrode 52a Therefore, dust is adsorbed by the adsorption material 52b on both sides of the acceleration electrode 52a. That is, since the metal mesh 53 connected to the ground is installed at both sides of the collecting unit 52, and the acceleration electrode 52a to which a DC voltage of +3.5 V is applied at the center of the collecting unit 52, the acceleration electrode ( The periphery of 52a) is charged to the (+) pole to generate electrical repulsion force against the dust having a (+) polarity. Therefore, dust is adsorbed by the adsorption material 52b of the electrostatic material provided in the both sides of the said acceleration electrode 52a.

However, since a high voltage of +5 to 7kv is applied to the discharge electrode 51a of the ionizing portion 51 and a DC voltage of + 3.5V is applied to the acceleration electrode 52a of the collecting portion 52, the discharge-responsive electrode 51b And despite the presence of the metal mesh 53 may be a minute current flow from the ionizing portion 51 to the collecting portion 52 by the voltage difference between both. Such a phenomenon is unavoidable as long as there is a potential difference between them, but since the adsorption material 52b formed of a polyurethane foam of electrostatic material is provided on both sides of the acceleration electrode 52a of the collecting portion 52, The fine current flow in is blocked. Therefore, it is not necessary to form an insulating material on the metal mesh 53 as in the conventional art, and since the metal mesh 53 is directly connected to the ground, there is no need to form a separate ground electrode in the collecting portion.

As described above, the electric dust collecting filter of the air purifier of the present invention does not have to form a separate insulating layer on the metal mesh and does not have to form a separate ground electrode in the collecting unit, thereby reducing the area of the collecting unit and the entire dust collecting filter. There is an advantage that it is easy to set the layout of the air purifier.

Claims (4)

An ionizing unit for charging the fine dust contained in the air passed by using a high voltage, a collecting unit which is installed at the rear of the ionizing unit and adsorbs the charged dust using electrical repulsive force, respectively installed on both sides of the collecting unit and grounded The electric dust collecting filter of the air purifier, characterized in that it includes a metal mesh connected with. The method of claim 1, The collection unit is configured to be composed of a wire-shaped acceleration electrode to which a high voltage of (+) polarity is applied, and an electrostatic dust collector of an air cleaner, characterized in that it is installed on both sides of the acceleration electrode, and an adsorbent material of electrostatic material adsorbs charged dust. filter. The method of claim 2, The adsorption material is an electrostatic precipitating filter of the air cleaner, characterized in that the electrostatic polyurethane foam material is used. The method of claim 1, The metal mesh is an electric dust collecting filter of the air cleaner, characterized in that formed of aluminum material.