JPH0375220B2 - - Google Patents

Description

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

Conventionally, this type of dust collector uses glass wool or the like as a filter to collect contaminant particles, such as dust, in micropores in the filter to purify the air.A physical dust collector uses a discharge electrode and Voltages are applied to the discharge electrode and the dust collection electrode so that they have different polarities, and the discharge electrode is charged with a corona discharge, thereby charging the contaminant particles. An electrostatic precipitator that adsorbs and collects contaminant particles is provided.

However, the former physical dust collector has the disadvantage that it is often unable to collect ultrafine contaminant particles due to the size and number of micropores in the filter, while the latter electrostatic dust collector In order to widely obtain the corona discharge in the discharge space, a high-voltage generator must be used, which increases manufacturing costs, poses a danger in handling the high-voltage generator, and furthermore causes power loss during the corona discharge. The disadvantage was that it was large.

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 unit, 4, 4 is a filtering unit, and 5 is an auxiliary filtering unit.

In the embodiment, the exterior frame 1 has an air suction port 11 on each opposing side surface, and a discharge port 12 for discharging the air sucked from the suction port 11 from the exterior frame 1.

The fan 2 and the motor 3 are connected to the suction 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 a basket-shaped fan as in the embodiment. In addition, an appropriate configuration can be adopted.

The suction port 11 is provided with a filter 11', and if a commonly used mesh filter is used as the filter 11', large contaminant particles sucked from the suction port 11 will be filtered into the filter 11'. It can be captured by tilting it.
As shown in FIG. 2, each filter section 4 has a pair of electrode plates 41, 41' made of thin aluminum plates or the like.
and dielectric brush-like surfaces 4 implanted on the mutually opposing inner surfaces of each electrode plate 41, 41'.
2 and 42', and a dielectric diaphragm 43 interposed between the brush-like surfaces 42 and 42', and the electrode plates 41 and 41' are respectively connected to respective electrodes of a power source 44 to form an electrode plate. An electrostatic field is generated in the interstitial space, especially around the dielectric diaphragm 43.

The brush-like surfaces 42, 42' may be made by implanting dielectric thin capillaries 42a with sharp tips, such as polyester filaments, onto the electrode plates 41, 41', or may be made by extrusion molding. Electrode plates 41 and 4 are made of a dielectric plate material on which a large number of fimbriae bodies have been formed in advance.
It may also be made by polymerizing and adhering to 1'.

The dielectric diaphragm 43 is formed using a film-like material made of a highly dielectric material, such as an ebonite plate or a polyethylene nonwoven fabric, as shown in FIG.
Each of the fine bristles on the brush-like surface is arranged so as to be in contact with the membrane surface.

The electrode plates 41, 41' are each fixed to a support 13 provided on the exterior frame 1, and this support 13 is normally provided in a removable manner to the exterior body 1.

The support base 13 may accommodate one filtering section 4 that is a combination of a pair of electrode plates 41, 41', but usually accommodates a plurality of filtering sections 4, 4... in parallel. It is configured to do so.

Further, in the embodiment, the group of the filter sections 4 is the suction port 11.
The filtration section group is provided in two places in series between the filtration section and the discharge port 12, but when used in factories that require high dust collection performance, this filtration section group may be provided at three or more locations; In the case of household use, it is sufficient to provide it at only one location.

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 in the filtration part 4 can be collected in the auxiliary filtration part 5.

In the above embodiment, the device of the present invention does not dispose the dielectric diaphragm 43 between the brush-like surfaces 42, 42' as shown in FIG.
The tips of the thin capillary bodies 2' may be configured to abut each other, and in this case, the dust collection performance will be lower than when the dielectric body 43 is provided, but it will not cause any practical problems. We were able to obtain dust collection data.

Since the device of the present invention is as described above, when a power supply voltage is applied to the electrode plates 41, 41', a strong electrostatic field is generated at the tips of the brush-like surfaces 42, 42'.
As a result, minute contaminant particles are sucked and captured.

That is, according to the device of the present invention, the brush-like surfaces 42, 4
Each thin capillary body 42a forming part 2' forms a large number of slits for collecting dust, and an electrostatic field is generated in each slit, thereby enabling efficient dust collection.

As described above, the device of the present invention has electrode plates 41, 41'.
Since the filtration section 4 can be created simply by forming brush-like surfaces 42, 42' on the opposing surfaces of Since this method collects contaminant particles by using the air filter, it has the advantage that it does not require the use of a high-voltage power source.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional side view of the dust collector of the present invention, Fig. 2 is a perspective view showing a filtration section used in the same device, and Fig. 3 is a perspective view showing a filter section used in the same device.
The figure is a front view showing a part of the filtering part as above, and FIG. 4 is a front view of a part showing another embodiment of the filtering part as above. In the figure, 1 is an exterior frame, 2 is a fan as an air flow means, 3 is a motor as a driving part, 4 is a filtration part, 41 and 41' are electrode plates, 42 and 42' are brush-like surfaces, and 43 is a dielectric diaphragm. , 44 indicates a power source.

Claims (1)

[Claims] 1.Equipped with an exterior body forming an air inlet and an air outlet, and a filtration part provided within the exterior body, the filtration part being arranged along the air flow direction and having a pair facing each other. , a brush-like surface formed on opposing surfaces of these electrode plates and made of a dielectric material, and a power supply connected to the pair of electrode plates, and the brush-like surface A dust collector characterized in that it is configured to generate an electrostatic field in the pore space that is formed, thereby attracting and collecting contaminant particles.