KR0184228B1 - Deodorizing apparatus of electrostatic collector - Google Patents

Abstract

The present invention relates to an electrostatic precipitating deodorizing device to solve the problem that the existing insulation distance has to be widened by performing the dust collection deodorization using a low voltage, and to expand the application range by reducing the size and size of the product.

In the conventional electrostatic precipitating deodorizer, high voltage is applied to the ionizing part and the collecting part, so that the distance between the ionizing part and the collecting part needs to be widened to remove the electric field interference phenomenon between the ionizing part and the collecting part. Since the distance must be secured, there is a problem that it is difficult to apply to various models because of the difficulty in thinning, and there is a problem that the insulation of the high voltage part is difficult even in a high voltage power supply.

In order to solve this problem, the ionizing part of the present invention is opposed to a power supply electrode arranged in a plurality of pairs with a predetermined interval between electrodes on the ceramic substrate so as to cause discharge due to a low voltage, and a ceramic substrate in which power supply electrodes are arranged in pairs. It consists of a ground electrode installed on the surface and a dielectric coated on the power supply electrode, and a non-woven fabric with multiple layers of the same length wires electrically insulated by a thin insulation coating on a thin copper wire to collect charged dust from the ionizing unit. It consists of a collection of shapes.

Description

Electric Dust Collector Deodorizer

The present invention relates to an electrostatic precipitating deodorization apparatus, and in particular, by performing a dust precipitating deodorization using a low voltage, to solve the problem that the existing insulation distance should be widened, to reduce the size of the product and to reduce the size of the product to expand the scope of application It relates to an electrostatic precipitating deodorizer.

In the conventional electrostatic precipitating deodorizing apparatus, as shown in FIG. 1, when a high frequency pulse high voltage is applied from a power supply DC, an ionization unit 1 configured to discharge dust 1a and a discharge corresponding electrode 1b charges dust particles. When the high frequency pulse high voltage is applied from the power source DC, the collecting electrode 2a comprises a collecting electrode 2a and a collecting corresponding electrode 2b to collect particles charged in the ionizing unit 1.

Referring to Figures 1 and 2 attached to the operation of the conventional electrostatic precipitating deodorizing device configured as described above are as follows.

First, when a high-frequency pulse high voltage of 5-5 kV is applied to the discharge line 1a in the ionizing unit 1, corona discharge is generated and an ionization line is formed between the discharge line 1a and the discharge corresponding electrode 1b. This will occur.

In this state, when the dust particles pass through the ionization line, the dust particles and the electrons generated in the ionizing unit 1 collide with each other and are charged, and the charged particles are transferred to the collecting unit 2.

Then, the collecting unit 2 collects the charged dust particles by the Coulomb force in the collecting electrode 2a formed of the flat plate electrode.

At this time, the charge rate of the dust particles flowing into the dust collecting filter is proportional to the particle radius, and the Coulomb force acting on the charged particles is proportional to the charge amount of the particles.

In addition, it is proportional to the electric field applied to the ionizing unit discharge electrode 1a and the discharge corresponding electrode 1b, and the dust collection rate of charged dust particles is also applied to the collecting electrode 2a and the collecting corresponding electrode 2b in the collecting unit 2. Is proportional to the electric field being

However, in the conventional electrostatic precipitating deodorizer, since high voltage is applied to the ionizing part and the collecting part, the distance between the ionizing part and the collecting part needs to be widened to remove the electric field interference phenomenon between the ionizing part and the collecting part. Since the distance between the electrodes must be secured, it is difficult to reduce the thickness, which makes it difficult to apply to products of various models. In addition, there is a problem that insulation of the high voltage part is difficult even in a high voltage power supply.

Accordingly, the present invention solves the problem that the existing insulation distance has to be widened by performing dust collection and deodorization using low voltage, and provides an electrostatic precipitating deodorization device which is intended to expand the application range by reducing the size and size of the product. There is a purpose.

1 is a block diagram of a conventional electric dust collecting device.

2 is a graph of Paschen's for explaining the present invention.

3 is a structure diagram of an ionizing unit of the electrostatic precipitating deodorizing apparatus according to the present invention.

Figure 4 is a state diagram of the influence of polarity inversion represented by the charge of the collecting portion according to the present invention.

5 is a graph showing the effect of polarity reversal on the electric field, (a) is a Without Reversal graph, (b) is a With Reversal graph.

* Explanation of symbols for main parts of the drawings

101: ionizing portion 101a: ceramic substrate

101b: power supply electrode 101c: ground electrode

101d: dielectric

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows the configuration of the electrostatic precipitating deodorizing apparatus according to the present invention, the ionizing portion for charging the dust by applying an electrode, and a thin insulator coating on the thin copper wire to collect the dust charged from the ionizing portion It is divided into a collection of nonwoven fabrics that are attached with multiple layers of the same length.

The ionizing portion 101 is formed on the ceramic substrate 101a to cause discharge due to a low voltage.

A power supply electrode 101b disposed in plural pairs at a predetermined interval between the electrodes, a ground electrode 101c provided on an opposite surface of the ceramic substrate 101a in which the power supply electrode 101b is disposed in pairs, It is composed of a dielectric 101d coated on the power applying electrode 10b.

Referring to the accompanying drawings, the operation and effect of the present invention configured as described above are as follows.

First, the conditions for causing the low voltage discharge will be described based on the law of Patschen as shown in FIG.

The dielectric breakdown voltage of the gas is a function of only the voltage p and the distance between the electrodes d as shown in the following equation (1), which has been experimentally identified by the partition and is called the law of partition.

The limit of the partition's law is not clear, but in most gases it is at 0.1 (pd) _min pd100 (pd) _min .

In particular, the upper limit in air can be pd = 200 to 5000torr˙cm, and the lower limit is 0.4torr 0.4cm by Germer.

The above logic can be used to determine the conditions for causing low voltage discharge.

First, when the electrode spacing for generating a discharge at 600V voltage at atmospheric pressure (1 atm = 706 torr) is obtained, the dielectric breakdown characteristic curve for air in FIG. 2 corresponds to point A, which is about 7 torr˙cm.

Therefore, 7 (torr˙cm) = 760 (torr) * d (cm)

∵ d = 7 (torr˙cm) / 760 (torr) ≒ 0.01 (cm).

That is, in order to generate a discharge at a voltage of 600 V under atmospheric pressure conditions, as shown in FIG. 3, a plurality of pairs are arranged on the ceramic substrate 101a in the ionizing unit 101 with a distance of at least 100 μm therebetween. After that, an electrode protective dielectric 101d is coated on the power applying electrode 101b in a thickness of Å unit.

In addition, a ground electrode 101c is formed on the lower side of the ceramic substrate 101a so that electrons or ions generated on the surface of the dielectric 101d of the ceramic substrate 101a are attracted upwards to widen the ionization region.

Applying alternating pulses (+) and (-) as shown in FIG. 4 on the electrode in the ionizing portion 101 configured as described above causes discharge to occur on the surface of the dielectric 101d, and dust passing through the surface. Is charged, and the odor gas is decomposed.

The reason why the alternating pulses are applied to (+) and (-) is that the application of pulses of one polarity or direct current causes charges to accumulate on the dielectric surface, which acts as a factor that inhibits discharge.

Meanwhile, as shown in FIG. 5, when the collector is coated with an insulating material having a thickness of about 10 μm on a copper wire having a diameter of about 100 μm, the two wires are electrically insulated, and then the DC wire is applied by attaching two wires. The electric field between the two wires will be zero due to the charge attached to the surface of the wire, as shown in Fig. 6A.

However, when a voltage of opposite polarity is applied as shown in Fig. 6B, the electric field is restored to a higher value according to the amount of charge attached to the surface.

Therefore, if the polarity reversal period is 0.5 times / minute and the two wires are made of a nonwoven fabric, a higher efficiency can be obtained than the electrostatic nonwoven fabric of the prior art, which is used as a collecting portion.

When the ionizing part and the collecting part constituted by the above technique are made into the dust collecting deodorizing device, the thickness of 10 to 15 mm is sufficient, so that the ultra thin device capable of performing the electric dust collecting and deodorizing.

As described above, since the present invention uses a low voltage, the insulation distance to be secured is shortened, thereby making it possible to reduce the size and size of the product, and also to easily drive the output voltage in terms of power supply.

Claims (5)

In the electric dust collecting deodorizing device comprising an ionizing unit consisting of a discharge electrode and a discharge-adaptive electrode to charge dust particles, and a collecting unit consisting of a collecting electrode and a collecting counter electrode to collect dust particles charged in the ionizing unit, the ionizing unit 101 ) Is a plurality of pairs of power applying electrodes 101b arranged on the ceramic substrate 101a at predetermined intervals so as to cause discharge due to low voltage, and the ceramics in which the power applying electrodes 101b are arranged in pairs. Electrode precipitating deodorizing device, characterized in that the ground electrode (101c) is provided on the opposite side of the substrate (101a), and a dielectric (101d) is coated on the power applying electrode (10b). The electrostatic precipitating deodorizing apparatus according to claim 1, wherein the ionizing unit (101) is arranged in plural pairs on the ceramic substrate (101a) with an interval between electrodes of 100 mu m. The dedusting apparatus of claim 1, wherein a pulse or an alternating voltage in which (+) and (−) are alternated is applied between the power applying electrodes (101b) of the ionizing unit (101). The electrostatic precipitating deodorizing apparatus according to claim 1, wherein the collecting unit comprises a thin insulator coating on a thin copper wire and attaches a wire of the same length electrically inverted to form a collecting unit. 5. The electrostatic precipitating deodorizing apparatus according to claim 4, wherein the polarity of the voltage applied to the thin copper wire is inverted at a predetermined cycle.

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