JPH0260382B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a filter having a high dielectric constant that has the ability to adsorb dust and other particles in the atmosphere by installing the filter in a strong electric field. This invention relates to an electrostatic air purifying device.

Conventional technology The dust collection section of a conventional electrostatic air purifier is shown in Figure 1.
As shown in FIG. 2, it is composed of a U-shaped ground electrode 101, a high dielectric constant filter 102 installed inside the ground electrode 101, and a plurality of conductive wires 103 installed inside the ground electrode 101.

When a high voltage is applied to the conductive filament 103 in the above configuration, the dust in the inhaled air is charged by the conductive filament, and then the conductive filament 103
The air is attracted to the high dielectric constant filter 102 provided in the electric field between the ground electrode 101 and the ground electrode 101, and the air is purified.

Problems to be Solved by the Invention However, in the conventional configuration described above, since a high voltage is applied to all of the conductive wires 103, the distribution of electric lines of force 104 from each of the conductive wires 103 toward the ground electrode 101 is As shown in Figure 2,
Electric lines of force 104 are located in the portion 102a of the high permittivity filter 102 that corresponds between each conductive filament 103.
no longer exists, and the electric field becomes non-uniform as a whole. Therefore, there is a drawback that clogging occurs slowly in the portion 102a of the filter 102 locally, and clogging occurs in other portions in a relatively short period of time.

The present invention solves the above-mentioned conventional drawbacks by uniformizing the electric field applied to a filter having a high dielectric constant, thereby eliminating local clogging of the filter.

Means for Solving the Problems In order to achieve this object, the electrostatic air purifying device of the present invention includes a ground electrode having air permeability formed in a U-shape or V-shape, and an air intake of this ground electrode. A high-permittivity filter of the same shape is installed in close contact with the inner side, and a plurality of conductive conductors are placed in the longitudinal center of this high-permittivity filter and to which a high voltage is applied by a high-voltage generator. A conductive wire is provided at an intermediate position between the conductive wires, and the conductive wire is electrically insulated without applying a high voltage.

Effect In this configuration, when a high voltage is applied to the plurality of conductive wires by the high voltage generator, lines of electric force generated from the conductive wires to which high voltage is applied toward the ground electrode are as follows: It is attracted to the conductive line provided at an intermediate position between the conductive lines to which no high voltage is applied, and the electric field distribution of the high dielectric constant filter becomes almost uniform.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

As shown in the figure, a device main body 1 is provided with an inlet 2 and an outlet 3, and the inside is made up of a blower 4 that takes in air from the inlet 2 and blows it out from the outlet 3, and a conductive fiber or filament. A U-shaped, air permeable ground electrode 5 has an opening corresponding to the suction port 2, and a high dielectric constant filter 6 of the same shape is closely attached to the inside of the ground electrode 5. A plurality of conductive wires 8 connected to the poles of a high voltage generator 7 provided in the device main body 1 are provided in the center in the longitudinal direction of the dielectric constant filter 6. A conductive wire 8' which is not connected to the high voltage generator 7 and is electrically insulated is located at an intermediate position.
is provided, and the pole of the high voltage generator 7 is connected to the ground electrode 5, so that lines of electric force 9 are generated from the conductive filament 8 toward the ground electrode 5.

To explain the operation in the above configuration, the blower 4
The dust in the air taken in from the suction port 1 is
The conductive wire 8 to which a high voltage is applied by the high voltage generator 7 is charged, and the conductive wire 8 and the ground electrode 5 are charged.
The air is purified by being attracted to a high dielectric constant filter 6 installed in an electric field between the two. The lines of electric force 9 generated from the conductive filaments 8 toward the ground electrode 5 are the conductive filaments 8' to which no high voltage is applied, which are provided at an intermediate position between the conductive filaments 8.
As shown in Figure 4, electric lines of force 9
is distributed, the electric field distribution of the high dielectric constant filter 6 is almost uniform, the dust is almost uniformly attracted to the high dielectric constant filter 6, and local clogging of the high dielectric constant filter 6 is alleviated.

In the drawings used to explain the above embodiment, two conductive wires 8 to which a high voltage is applied are used, and one conductive wire 8' to which a high voltage is not applied is provided in the middle position. However, depending on the size of the air purifying device, even if two or more conductive wires 8 to which high voltage is applied are provided, conductive wires 8' to which high voltage is not applied may be replaced by conductive wires 8' to which high voltage is applied. If it is provided at an intermediate position between the conductive filaments 8, the same effects as described above can be obtained. Further, the shape of the ground electrode 5 is not limited to the U-shape, and it goes without saying that it may be V-shape.

Effects of the Invention As described above, according to the present invention, it is possible to simply provide a conductive wire that is electrically insulated without applying a high voltage at an intermediate position between a plurality of conductive wires to which a high voltage is applied. With this configuration, the electric field distribution of the high dielectric constant filter can be made uniform, local clogging of the high dielectric constant filter can be alleviated, and an efficient electrostatic air purifying device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional dust collection section, FIG. 2 is an enlarged sectional view of the same dust collection section, FIG. 3 is a side sectional view of an electrostatic air purifier according to an embodiment of the present invention, and FIG. The figure is an enlarged sectional view of the dust collecting part. 5... Ground electrode, 6... High dielectric constant filter, 7... High voltage generator, 8... Conductive line to which high voltage is applied, 8'... Conductive line to which high voltage is not applied.

Claims (1)

[Claims] 1. A ground electrode with air permeability formed in a U-shape or V-shape, a high-permittivity filter of the same shape installed closely on the inside of this ground electrode on the air intake side, and this high-permittivity filter. a plurality of conductive filaments arranged in the center in the longitudinal direction and to which a high voltage is applied by a high voltage generator; An air purifying device equipped with electrically insulated conductive wires.