JPH03101B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic precipitator in which a filter body is implanted with charged bristles.

As this kind of dust collector, for example, Utility Model Publication No. 51-3098
As disclosed in Japanese Utility Model Publication No. 59-20359, a base fabric such as non-woven fabric is spread over a wire mesh used as a ground electrode, and fibers are implanted in this base fabric to construct a filter body. There is something. In a filter body with such a structure, the charged hairs vibrate to minutely cross the contaminated air, or the long and short charged hairs concentrate lines of electric force, thereby removing contaminated particles in the circulating air. For example, it is said that the dust trapping effect can be improved.

However, in such conventional devices, the contaminated air only passes through a thin base fabric, so the length of the electrostatic field that acts on the contaminated air is short, so there is a problem that the contaminated air cannot be purified sufficiently. In addition, since the contaminant particles are ionized by corona discharge in order to capture the contaminant particles, it is necessary to use a high voltage generator, which increases the manufacturing cost.
There was also the problem that handling high-voltage power supplies was dangerous.

The present invention aims to provide a dust collector that eliminates the above-mentioned drawbacks.

The device of the present invention will be explained below with reference to the accompanying drawings. Fig. 1 is a vertical sectional side view showing the dust collector of the present invention. In the figure, 1 is an exterior frame, 2 is a fan as an air flow means, and 3 is the fan 2. A motor serves as a driving section, 4, 4 is a filter, and 5 is an auxiliary filtration section. In the embodiment, the exterior frame 1 has air inlets 11 on opposite sides, and air inlets 11 on each side.
It has an exhaust port 12 for discharging air introduced into the interior from the exterior frame 1.

The fan 2 and the motor 3 are connected to the air supply port 1.
The fan 2 may be provided on the side of the exhaust port 12 to allow air to flow into the exterior frame 1, but it may also be provided on the exhaust port 12 side, or the fan 2 may be provided on the outside using a cage-type fan as in the embodiment. , an appropriate configuration can be adopted.

The air inlet 11 is provided with a filter 11', and if a commonly used mesh filter, for example, is used as the filter 11', coarse contaminant particles sucked from the air inlet 11 are removed from the outer frame. It has the advantage that it can be filtered before flowing into the water.

As shown in FIG. 2, each of the filter bodies 4 includes a dielectric block 42 having a large number of through holes 41, electrodes 43 and 44 formed on opposing surfaces of the dielectric block 42, and electrodes 43 and 44 inside the through holes. It is composed of charged bristles 45 that are implanted into the bristles.

The dielectric block 42 of this filter body 4 is made of a mesh block having a three-dimensional three-dimensional structure with a large thickness in the direction of air flow. As shown in FIG. 2, it has a mesh-like through hole 41 formed in a stray pattern with a mesh skeleton 47 inside.

As such a dielectric block 42, a mesh block made of synthetic resin may be used as is.
In addition, an electrostatic flocking method may be used to flock the dielectric blocks 42.

The charged bristles 45 are usually connected to the dielectric block 4.
For example, hairs may be implanted at about 5 m/m into the dielectric block from the opposing surface where the electrodes 43 and 44 of No. 2 are not provided.
The entire interior of 2 may be implanted with hair.

The charging bristles 45 may be made of a material with good dielectric properties, such as nylon or polyester.

The electrodes 43 and 44 are made of aluminum foil or the like, and are usually set so that one of them is connected to the negative electrode of the power source and the other to the positive electrode of the power source, as shown in FIG. As shown in FIG. 3, inside the dielectric block 42,
For example, by providing a third electrode 46 made of copper wire,
It may be configured to apply an electrostatic voltage between this electrode 46 and the external electrodes 43, 44. In this case, the external electrodes 43, 44 are connected to one electrode of the power source, and the internal electrode 46 is connected to the power source. is connected to the other electrode.

In the above, as the mesh block constituting the dielectric block 42, a polyurethane foam having a three-dimensional skeleton structure by completely removing the foam film is suitable. Scotto" (manufactured by Bridgestone Tire Co., Ltd.).

As shown in FIG. 4, the through hole 41 may be opened so as to filter the air a flowing through the exterior frame 1, and the charged bristles 45 may be inserted into the through hole 41.
It may be upright or inclined as long as it protrudes into the hole space.

Further, in the above embodiment, the filter body 4 is provided in two stages within the exterior frame 1, but when used in a factory or the like where high dust collection performance is required, it may be provided in three or more stages. On the other hand, for household use, it is sufficient to provide only one stage.

Also, although one filter body 4 may be used, in some cases, a plurality of filter bodies 4 may be stacked horizontally and arranged in parallel on the exterior frame 1.

In the embodiment, the auxiliary filtration section 5 is constituted by a metal mesh filter made by molding a conductive metal material, such as copper, into a mesh shape. By applying this, there is an advantage that contaminant particles that are not collected by the filter body 4 can be collected in the auxiliary filter section 5.

Since the dust collector of the present invention is as described above, the following effects can be expected by using it.

Since the through hole 41 is formed in the dielectric block 42 which has a large thickness in the air flow direction, that is, in a mesh-like three-dimensional structure, the through hole 41 is bent within the dielectric block to lengthen the flow path of contaminated air. I can do things,
Therefore, it is possible to purify contaminated air in a narrow and long space where a strong electrostatic field acts, and this through hole 4
Since the charged bristles 45 are flocked inside the through hole 1, static electricity can be concentrated therein to improve the dust collection effect in the through hole 41.

Therefore, the device of the present invention can perform electrostatic dust collection well without using a high-voltage ionization device such as a corona discharge device, so the above-mentioned problems associated with the use of a high-voltage generator can be easily solved. effective.

[Brief explanation of the drawing]

FIG. 1 is a vertical plan view of the device of the present invention, FIGS. 2 and 3 are perspective views showing examples of filter bodies used in the device of the present invention, and FIG. 4 is an enlarged view of a part of the filter body. FIG. In the figure, 1 is an exterior frame, 4 is a filter body, 41 is a through hole,
42 is a dielectric block, 43, 44, 46 are electrodes, and 45 is a charged hair.

Claims (1)

[Claims] 1. A filter body for filtering the circulating air is provided in an exterior frame that allows air to flow from one air supply port to the other outlet, and the filter body is a mesh-like three-dimensional structure with a large thickness in the direction of air flow. The dielectric block has a made dielectric block and an electrode that generates an electrostatic field in the dielectric block, and the dielectric block has a mesh-like through hole formed by a mesh skeleton inside the dielectric block, and A dust collector characterized by having charged bristles made of dielectric material implanted in a mesh skeleton.