KR20030075705A - Electric dust collecting filter of air cleaner - Google Patents

Abstract

PURPOSE: An electric dust collecting filter of an air cleaner is provided to apply a voltage to a metal collector, and to collect dust in entire parts of the collector, thereby improving absorbing efficiency. CONSTITUTION: An ionizing unit(51) electrifies fine dust included in the air by using a high voltage. A collector(52) is installed in a back direction of the ionizing unit(51), and is connected to a ground or absorbs the electrified fine dust by being applied with a high voltage. A metal mesh(53) is installed between the ionizing unit(51) and the collector(52), and is connected to the ground. A case supports each unit(51,52,53). The ionizing unit(51) comprises as follows. A wire-shaped discharge electrode(51a) has plus polarity when a high voltage is applied. Many discharge corresponding electrodes(51b) form ionized lines(51c) on a space with the discharge electrode(51a).

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 an electric force, and in particular, dust collection is made over the entire surface of the collecting unit, thereby providing air cleaning efficiency. It relates to a dust filter of an air purifier to improve the quality.

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 unit 932 is in a state where the 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 adsorption efficiency is low because the configuration of the collecting unit is complicated, the manufacturing process is long, and charged dust is adsorbed only on the collecting electrode.

The present invention has been made in order to solve the above problems of the prior art, by applying a negative voltage to the metal-collecting portion formed in the metal collection portion to collect the dust from all the collection portion to improve the adsorption efficiency and manufacturing process The object is to provide an electric dust collecting filter of this simplified air purifier.

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 52 ': aluminum foam

53: metal mesh

The present invention for solving the above technical problem and the ionizing unit for charging the fine dust contained in the air passed by using a high voltage, the collecting unit is installed in the rear of the ionizing unit and connected to the ground and adsorbs the charged dust; The metal mesh is installed between the ionizing part and the collecting part and is connected to the ground.

In addition, instead of being connected to the ground, the collector is characterized in that a high voltage of (-) polarity is applied or the collector is formed in the form of a conductive foam.

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 part 52 which is connected to the ground or is applied with a high voltage of -3.5 kV to absorb charged dust, and a metal mesh 53 installed between the ionizing part 51 and the collecting part 52 and connected to the ground. ) And a case for supporting them, respectively.

The ionizing part 51 is connected to a voltage generating part and is disposed at regular intervals such that the wire-shaped discharge electrode 51a and the discharge electrode 51a are interposed when a high voltage of 5 to 7kv is applied. And an ionization line 51c formed between the discharge electrode 51a and the discharge electrode 51a.

In addition, the collecting portion 52 is formed in the form of a conductive foam so as to increase the surface area in order to increase the adsorption area of dust, which must be formed of a conductive foam when connected to ground or a negative voltage is applied (+). This is because the dust charged with polarity can be adsorbed. The conductive foam is preferably formed of an aluminum material which is light and can expect a foaming effect due to diffusion. However, the conductive foam may be formed of a ceramic material if the conductivity is maintained. Of course, the metal mesh connected to the ground induces a flow of dust that is positively polarized, but does not adsorb dust due to the mesh shape.

The electric dust collecting filter of the air cleaner according to the present invention configured as described above can adsorb charged dust without forming a separate electrode in the collecting unit.

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, after air is charged while passing through the ionizing portion 51, dust is adsorbed while passing through the collecting portion 52. Since the high voltage of 5-7kv is applied to the discharge electrode 51a of the ionizing part 51, and the discharge corresponding electrode 51b is connected to the ground, between the discharge electrode 51a of the ionizing part 51 and the discharge corresponding electrode 51b. An electric field is formed by the ionization line 51c, and fine dust contained in the air passing through the electric field is charged to the positive electrode by the electric field.

The air containing the dust charged to the positive electrode moves to the collecting part 52. Since the aluminum foam of the collecting part is connected to the ground or a high voltage of -3.5 kV is applied, the dust charged to the positive electrode Is adsorbed to the collecting portion by the electric adsorption force. Here, since the collecting part is formed of an aluminum foam material, dust is collected over the entire collecting part and its performance is improved by the collecting effect due to diffusion due to the characteristics of the aluminum material.

As described above, the electric dust collecting filter of the air purifier of the present invention does not need to have an electrode installed in the collecting unit, thereby simplifying the manufacturing process and collecting dust over the entire collecting unit, thereby improving the air cleaning efficiency.

Claims (4)

An ionization unit for charging the fine dust contained in the air passed by using a high voltage, a collecting unit installed at the rear of the ionizing unit and connected to the ground to adsorb charged dust, and installed between the ionizing unit and the collecting unit, An electric dust collecting filter of an air purifier, characterized in that it comprises a metal mesh connected to ground. The method of claim 1, The collector is connected to the ground, instead of being applied to the high voltage of the negative polarity electric dust filter of the air cleaner. The method according to claim 1 or 2, The collection unit is an electric dust collecting filter of the air cleaner, characterized in that formed in the form of a conductive foam to maximize the adsorption area of dust. The method of claim 3, The conductive foam is an electric dust collecting filter of the air cleaner, characterized in that the aluminum foam formed of an aluminum material is used.