JPH0353981B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust collector that cleans the air by removing dust mixed in the air by electrostatic action.

Conventionally, this type of dust collector has either physically filtered the air by using a material with minute pores, such as glass wool, as a filter, or collected dust electrostatically, such as by generating static electricity. Electrostatic precipitators have been provided that filter air using the particle-attracting properties of static electricity.

However, in the former case, the dust collection performance varies depending on the material of the filter used, that is, the number and size of pores in the material, and therefore in some cases it may not be possible to collect ultrafine particulate dust. In the latter case, the manufacturing cost is high because static electricity is generated by the high voltage generator, and the high voltage generator itself is dangerous to handle.

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

The device of the present invention will be explained below with reference to the drawings. Fig. 1 is a vertical side view showing an embodiment of the device of the present invention, and in the figure, 1 is an exterior frame, 2 is a fan as a flow means, and 3 is a drive fan 2. A motor serves as a driving unit, 4, 4 is a filtering mechanism, and 5 is an auxiliary filtration mechanism.

The exterior frame 1 has an air suction port 11 opened on one side facing the fan 2, and an air discharge port 12 on the other side facing the suction port 11.

That is, the dust collector of the present invention directs air to the exterior frame 1.
The air is caused to flow from left to right in FIG. 1 by the fan 2, and in the meantime, it is passed through the filtration mechanisms 4 and 5 to filter out contaminant particles, such as dust, mixed in the air.

In the embodiment, a filter 11' is provided on the side of the suction port 11, and the filter 11' may be a commonly used one, such as a mesh filter, or a basket-type fan may be used as the fan 2. However, other means may be freely used, and the fan 2 may also be provided on the outlet 12 side.

FIG. 2 is a perspective view showing an embodiment of the filtering mechanisms 4, 4, in which reference numerals 41 and 41 indicate bases 42 and 42 are filtering members.

The bases 41, 41 are provided inside the exterior frame 1 to face each other, and may be made of, for example, a metal plate or a resin plate. When polyurethane foam is used, contaminant particles such as dust mixed in the air can be physically collected within the polyurethane foam by allowing air to pass through the micropores in the polyurethane foam. There are advantages.

The above-mentioned polyurethane foam usually did not have sufficient filtration properties because the foam membrane remained in the product, but in recent years, polyurethane foams with only a three-dimensional skeleton structure by removing the foam membrane have been provided. An example of this type of tire is the product name "Everlight Scotto" (manufactured by Bridgestone Tire Co., Ltd.).

The filter members 42, 42 are made by planting a large number of dielectric materials, such as polyethylene terephthalate made by processing polyester into linear shapes, in the shape of brushes inside the bases 41, 41, and in the embodiment, they are bonded with adhesive. The tips are formed so that they face each other and come into contact with each other.

That is, the tips of the filter members 42, 42 are rubbed by the air blown by the fan 2, and are thereby charged with static electricity, thereby removing contaminant particles, such as dust, in the air passing through the exterior frame 1. Therefore, if the Everlight Scotto is used as the bases 41, 41 as described above, the device of the present invention physically collects the dust by attracting the dust using static electricity. In addition to being able to collect dust, the above filter member 4
Since dust can be collected electrostatically by 2 and 42, it is possible to construct a double structure.

Furthermore, when the filter members 42, 42 are charged and an electrostatic field is generated, it is thought that the bases 41, 41 are also charged due to electrostatic induction.
When Everlite Scotto is used for the bases 41 and 41, both physical dust collection and electrostatic dust collection can be performed on the bases 41 and 41.

Furthermore, since the tips of the filter members 42, 42 that contact each other are charged with a large amount of static electricity, the tips of the filter members 42, 42 may be sharpened to further promote static electricity charging. can. In the embodiment, the filtration mechanism 4 is provided at two locations, but if used in a factory or the like where high dust collection performance is required, it may be provided at three or more locations. In some cases, only one location is sufficient. In the embodiment, the auxiliary filtration mechanism 5 is composed of a metal mesh filter made by molding an electrically conductive metal material, such as copper, into a mesh shape, and as shown in FIG. Conductive plates 41a are provided as electrodes on the bases 41, 41, respectively, and when the filter members 42, 42 are charged, negative charges generated on the outside of the filter members 42, 42 by electrostatic induction are transferred to the auxiliary filtration. There is an advantage that the mechanism 5 can be electrically charged, and positively charged particles that pass through the filter members 42, 42 can be attracted by the metal mesh filter.

In the above, the device of the present invention can also be configured as follows.

As shown in FIGS. 4A and 4B, movable means (not shown) is provided to rotate or reciprocate one or both of the bases 41, 41, and the filter members 42, 42
It also has the advantage that it can promote tribostatic charging, thereby improving dust collection performance.

However, when adopting a configuration in which one or both of the above are rotated, as shown in FIG. 4B, the base 4
It is desirable to form it into a circular shape so that it can be easily rotated. Furthermore, a power source is attached to the filtration mechanism 4,
Electrostatic voltages may be applied to the bases 41, 41 separately and with different polarities to each other, and in this way, a lower voltage power source can be used than in the past, and the electrostatic adsorption effect can be efficiently achieved. You can get it.

Since the device of the present invention has the above-described configuration, if the above-described porous synthetic resin plates are used for the bases 41, 41, dust can be physically collected by the bases 41, 41, and the filter member By rubbing the ends of the filter members 42, 42 against each other, the filter members 42, 42 can be charged with static electricity and electrostatic dust collection can also be carried out, resulting in good dust collection efficiency. The high voltage generator for charging the filter members 42, 42 can be omitted, and the filter member 4 can be
Since static electricity is obtained by rubbing the parts 2 and 42 against each other, the manufacturing cost is low and there is no danger.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view showing an embodiment of the dust collector of the present invention, Fig. 2 is a perspective view of a filtration mechanism used in the above device, and Fig. 3 is another embodiment of the filtration mechanism used in the above device. The perspective views shown in FIGS. 4A and 4B are schematic exploded perspective views showing other embodiments of the filtration mechanism used in the above device, respectively. In the figure, 1 is an exterior frame, 2 is a fan as a flow means, 3 is a motor as a drive unit, 4 is a filtration mechanism, 41 is a base, 42 is a filter member, and 5 is an auxiliary filtration mechanism.

Claims (1)

[Claims] 1. An exterior frame having an air suction port and an air discharge port;
The filtration mechanism includes a flow means for causing air to flow from the suction port to the discharge port, and at least one filtration mechanism that filters the air sucked from the suction port, and the filtration mechanism includes an inner side of the exterior frame. A pair of bases are installed facing each other, and a large number of wires are implanted inside these bases and are made of dielectric material and arranged so that their tips abut each other. 1. A dust collector, comprising: a filter member, and is configured to adsorb and collect pollutant particles in the air by static electricity generated by rubbing the filter members against each other by flowing air. 2. The dust collector according to claim 1, wherein the filter member has a sharp tip. 3. The filter according to claim 1, characterized in that a movable means is provided on one or both of the pair of bases, thereby promoting electrostatic charging of the filter member. Dust collector. 4. An exterior frame having an air suction port and an air discharge port;
It has a flow means for flowing air from the suction port to the discharge port, and at least one filtration mechanism that filters the air sucked from the suction port. A pair of bases that physically filter the air by collecting particles with a large number of micropores, and are provided facing each other inside the exterior frame, and a large number of bases are planted inside these bases. and a large number of linear filtration members made of a dielectric material and disposed so that their tips are in contact with each other, and the filtration members are rubbed against each other by flowing air to generate the filtration. A dust collector characterized by being configured to attract and collect pollutant particles in the air using static electricity. 5. The dust collector according to claim 4, wherein the filter member has a sharp tip. 6. The filter according to claim 4, characterized in that one or both of the pair of bases is provided with a movable means, thereby promoting electrostatic charging of the filter member. Dust collector.