JPH0824711A - Air purifier - Google Patents

Abstract

PURPOSE:To provide an air purifier not soiled on the surface of a case, in the air purifier collecting dust by electrifying dust. CONSTITUTION:Since the surface of case 2 of the air purifier has electrical conductivity, electric charge is not accumulated on the surface of case (electrification on the surface of case is prevented), and an electrical attraction action is not generated between the electrically charged dust and the surface of case 2 not electrically charged and then the dust does not stick on the surface of case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning device used for cleaning a space to be cleaned such as a room in a building and for collecting dust floating in the space to be cleaned.

[0002]

2. Description of the Related Art As an air cleaning device of this kind, the product name "cLearv" manufactured by Kankyo Corporation
An air purifier that does not use a blower is known as "eiL (clear bale)".

As shown in FIG. 2, a conventional air purifying apparatus 50 has a main body case 51 composed of a front side case 51 'and a rear side case (not shown), and a DC high-voltage power supply 52 in the main body case 51. And this DC high voltage power supply 5
2, for example, a charging electrode 53 connected to the positive electrode side, a dust collecting electrode 54 facing the charging electrode 53 and connected to the negative electrode side of the DC high-voltage power supply 52, and between the charging electrode 53 and the dust collecting electrode 54. And a dust collecting paper 55 that is in contact with the dust collecting electrode 54. Air inlets and outlets 57 and 58 are formed in the front case 51 '.

Therefore, when a high voltage is applied from the DC high voltage power source 52, corona discharge is generated between the charging electrode 53 and the dust collecting electrode 54, and the dust 59 is positively charged by this corona discharge. The dust 59 which is positively charged is electrically attracted to the dust collecting electrode 54 which is negatively charged.

Immediately before reaching the dust collecting electrode 54, the positively charged dust 59 contacts the dust collecting electrode 54 and reaches the negatively charged dust collecting paper 55, and the dust 59 reaches the dust collecting paper 55. It is attached and collected.

[0006]

However, since the charged range of dust in the above-described device extends not only between the electrodes but also around the charged electrode centering around the charged electrode, the charged dust is
Not all of them are collected on the dust collecting paper, and a part of them goes out of the device through the air inlet / outlet port. Therefore, if the case of the air purifier is made of non-conductive plastic material, etc., the surface of the case will be easily charged and dust will adhere to the case, and it can be used for 2-3 weeks. There is a problem that the case becomes dirty.

In view of the above, the present invention provides an air cleaning apparatus that charges and collects dust without polluting the surface of the case.

[0008]

SUMMARY OF THE INVENTION In the air cleaning apparatus according to the present invention, however, a charging electrode communicating with one end of a DC power source and a dust collecting electrode communicating with the other end are housed in a case, and the charging electrode and the collecting electrode are collected. The dust collecting paper is arranged between the dust electrode and the dust electrode so that the case surface has conductivity.

Here, the surface of the case may be made conductive by a resin containing carbon (claim 2) or made conductive by a silicon-based moisturizing material (claim 3).

Further, a metal layer may be formed on the surface of the case by sputtering or vapor deposition so as to have conductivity (claim 4).

[0011]

Therefore, in the present invention, since the surface of the case of the air cleaning device is made conductive, no charge is accumulated on the surface of the case (charging of the surface of the case is prevented), and charged dust is present. Since an electric attraction action does not occur between the case and the surface of the case which is not charged, dust does not adhere to the surface of the case, and therefore the above-mentioned problem can be achieved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

The air purifying apparatus 1 shown in FIG. 1 is constructed by disposing an electrostatic precipitator 3 and a DC high-voltage power source 4 in a main body case 2 formed by fitting a front case 2'and a rear case (not shown). Has been done.

The front case 2'of the main body case 2 is formed with air inlets and outlets 5 and 6 below and above it. Therefore, the dust 20 flowing in from the air inlets / outlets 5 and 6 is
It is collected by the electric dust collector 3.

The electric dust collector 3 comprises a charging electrode 10, a dust collecting electrode 11 and a dust collecting paper 12 for collecting and collecting the dust. The charging electrode 10 is arranged in the main body case 2 in the vicinity of the air inlet / outlet 5. , Is connected to the positive electrode side of the DC high-voltage power supply 4.
A high voltage of several KV is applied here.

A dust collecting electrode 11 is arranged on the downstream side of the charging electrode 10 and is connected to the negative electrode side of the DC high voltage power source 4. Between the charging electrode 10 and the dust collecting electrode 11, a dust collecting paper 12 for collecting dust, which is a toilet paper formed by thinly weaving paper fibers or a kitchen towel formed by thinly weaving cloth fibers, is arranged. , In this example,
The dust collecting paper 12 is in contact with the dust collecting electrode 11. As a result, the dust collecting paper 12 has the same potential as the dust collecting electrode 11. Therefore, when a voltage is applied between the electrodes, a potential difference occurs between the charging electrode 10 and the dust collecting electrode 11, corona discharge 13 occurs, and the dust 20 floating in the air cleaning device 1 is positively charged.

The surface of the main body case 2 is coated with a conductive material 15 made of resin containing carbon so as to have conductivity. The resistance value of the conductive material 15 is 10 ⁸ Ω
The following is desirable.

In the air cleaning apparatus 1 having the above structure, when the DC high voltage power source 4 is applied between the charging electrode 10 and the dust collecting electrode 11, a potential difference is generated between the charging electrode 10 and the dust collecting electrode 11, and corona discharge is generated. 13 occurs, and the dust 20 floating in the air cleaning device 1 is positively charged.

Therefore, the dust 20 charged positively
Is electrically attracted to the minus side dust collecting electrode 11, reaches the dust collecting paper 12 which is in contact with the dust collecting electrode 11 immediately before reaching the dust collecting electrode 11, and adheres to the dust collecting paper 12 to be caught. Gathered.

On the other hand, the charged dust 20 that is not collected by the dust collecting paper 12 but goes out of the air cleaning device 1 and floats may contact the body case 2 and be attached thereto. Since the surface 14 is formed of a conductive material containing carbon, the electric charge is easily transferred and the property of storing the electric charge is extremely small, and the electric attraction between the main body case 2 and the non-charged main body case 2 is obtained. Since it does not occur, it does not adhere to the main body case 2.

In the present embodiment, the surface 14 of the body case 2 is made conductive by using a resin containing carbon. However, the present invention is not limited to this, and a silicon-based moisturizing material or a metal layer formed by sputtering or vapor deposition is formed. Even if it does, the same effect can be obtained.

[0022]

As described above, according to the present invention,
The surface of the main body case is less likely to be charged because the surface of the case of the air purifier is made electrically conductive by attaching a resin containing carbon, etc., so that even if charged dust contacts it The surface of the case can be kept clean.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an outline of an air cleaning device of an embodiment according to the present invention.

FIG. 2 is a cross-sectional view of a conventional air cleaning device of an embodiment according to the present invention.

[Explanation of symbols]

 1 Air Cleaner 2 Body Case 3 Electric Dust Collector 4 High Voltage DC Power Supply 5, 6 Air Inlet / Outlet 10 Charging Electrode 11 Dust Collecting Electrode 12 Dust Collecting Paper 15 Conductive Material

Claims (4)

[Claims] 1. A charging electrode communicating with one end of a DC power source and a dust collecting electrode communicating with the other end are housed in a case, and dust collecting paper is arranged between the charging electrode and the dust collecting electrode, and the case surface is provided on the case surface. An air purifier characterized by having conductivity. 2. The air cleaning apparatus according to claim 1, wherein the case surface is made conductive with a resin containing carbon. 3. The air cleaning apparatus according to claim 1, wherein the case surface is made electrically conductive by a silicon-based moisturizing material. 4. The air cleaning apparatus according to claim 1, wherein a metal layer is formed on the surface of the case so as to have conductivity.