JPH03154657A - Dust collector for air cleaner - Google Patents

Abstract

PURPOSE:To make it possible to collect dust at high efficiency and put a filter in an electrically charged space to make a device smaller by disposing a wave- shaped dust collecting filter in zigzag manner between positive and negative electrodes, both of them having protrusions thereon, which are alternately parallelly arranged. CONSTITUTION:When a fan 15 is driven by a motor 16, an air stream 7 is formed, so that the indoor air is sucked through suction ports 11a into a box 1 to be passed through positive electrode plates 12b and protrusions 12c of a positive electrode 12, a dust collecting filter 14 and negative electrode plates 13b of a negative electrode 13 and is delivered into the room from outlet ports 11b, while DC high voltage is applied between the positive electrode 12 and negative electrode 13, so that corona discharge takes place from the protrusions 12c of the plate 12b, whereby particles of dust passing therethrough are electrically charged. Since, at the same time, an electric field is set up between both the electrode plates, the particles of dust are collected on the filter 14 at high collection efficiency. In this manner, the filter 14 is housed utilizing a space between both electrode plates 12b,13b, making thereby the device smaller.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dust collector that is incorporated into an air cleaner and collects dust.

[Prior Art] FIG. 5 is a layout diagram showing a conventional dust collector for an air cleaner.

In the figure, (1) is a charging section installed in a box (not shown), and a discharge wire (2) in which tungsten wire etc. are arranged in parallel.
) and an electrode plate (3) placed in parallel with this with an air gap in between. ) is also connected to the negative pole. (5) is a dust collection filter made of a dielectric material such as polypropylene or polyethylene, which is placed in parallel with the charging part (1), and (6) is a wire mesh placed facing the dust collection filter (5). connected to the negative terminal of (7) is an air flow generated by blower fi (not shown).

The dust collector of a conventional air purifier is configured as described above.
Indoor air containing dust is sucked into the box and passes through the charging section (1). In the charging part (1), a positive voltage is applied to the discharge wire (2) and a negative voltage is applied to the electrode plate (3), so
Corona discharge occurs between the discharge wire (2) and the electrode plate (3). Therefore, dust particles passing through the charging section (1) are positively charged. On the other hand, since a negative voltage is applied to gold v4 (6), negative dielectric polarization is generated on the upstream side surface (left side surface in FIG. 5) of the dust collecting filter (5). Since the charged particles are attracted to this negative dielectric polarization, dust particles are collected. When dust particles adhere to the dust filter (5).

Since the electric charge of the dust collecting filter (5) is discharged and neutralized, the collection efficiency of the dust collecting filter (5) is reduced. However, since there is a wire mesh (6) to which a negative voltage is applied on the downstream side of the dust collection filter, an electric field is generated between the discharge wire (2) and the wire mesh (6).
The dust collecting filter (5) is polarized with dust particles attached thereto, thereby extending the life of the dust collecting filter (5).

In this way, the indoor air sucked into the box is blown back into the room as clean air free of dust, and this process is repeated thereafter.

[Problems to be Solved by the Invention] In the conventional air purifier dust collector as described above, the charging section (1) and the dust collection filter (5) each occupy separate spaces; There is a problem that the dust collection mechanism becomes large.

This invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide a dust collector for an air cleaner in which the dust collection mechanism can be made compact.

[Means for Solving the Problems] A dust collector for an air cleaner according to the present invention includes a net-like positive electrode plate arranged in parallel along the air flow and having a protrusion at the tip;
Negative electrode plates are arranged alternately in parallel with the positive electrode plates, a DC high voltage is applied between these plates, and a wavy dust collection filter is meanderingly arranged between the positive and negative electrode plates. .

[Function] In this invention, since the wavy dust collecting filters are meanderingly arranged between the positive electrode plates and the negative electrode plates which are alternately arranged in parallel and have protrusions, corona discharge is likely to occur. Further, the dust filter is housed using the space of the charging section.

[Embodiment Figures 1 to 4 are diagrams showing an embodiment of the present invention.
2 is a partially enlarged view of the charging section, FIG. 3 is a plan view of the positive electrode plate, and FIG. 4 is a plan view of the negative electrode plate.
Portions similar to those of the conventional device are designated by the same reference numerals.

In the figure, (11) is a box body having an inlet (lla) and an outlet (llb). (12) is a high voltage power supply (4)
A positive electrode connected to the positive electrode of the frame (12a), a positive electrode plate (12b) consisting of wire mesh electrodes erected on the frame (12a) and arranged in parallel, and the tip of the positive electrode plate (12b). It consists of a protrusion (12c) protruding from. (13) is a negative electrode arranged opposite to the positive electrode (12) and connected to the negative electrode of the high voltage power source (4);
Negative electrode plate consisting of wire mesh electrodes vertically arranged in parallel (
13b), and a picture electrode plate (12b) (13
b) are arranged alternately. (14) is a dust collection filter formed in a wave shape and meanderingly arranged between the picture electrode plates (12b) and (13b), and (15) is a blower driven by a motor (16) to generate an air flow (7).

In the air purifier dust collector configured as described above, when the blower (15) is rotated by the motor (16), an air flow (7) is generated, and indoor air is drawn into the suction port (lla).
) into the box (1), and the positive electrode plate (12b) of the positive electrode (12), the protrusion (12c), and the dust collection filter (1
4) and the negative electrode plate (13b) of the negative electrode (13), and is discharged into the room again from the discharge port (llb). on the other hand,
Since a DC high voltage is applied between the positive electrode [1 (12) and the negative electrode (13), the protrusion (1) of the positive electrode plate (12b)
A corona discharge starts at part 2c) and charges the passing dust particles. One electrode plate (12b) (13b) at the same time
Since an electric field is generated between them, the dust particles are collected by the dust collection filter (I4) with high dust collection efficiency by Coulomb force.

In this way, the dust collection filter (I4) is connected to the picture electrode plate (1).
Since it is stored using the space between 2b) and (13b),
It is possible to configure the device to be more compact than conventional devices.

In the embodiment, a wire mesh electrode was used for the negative electrode plate (13b), but it may also be a flat electrode.

[Effects of the Invention] As explained above, in this invention, a net-shaped positive electrode plate having projections and negative electrode plates arranged alternately in parallel with the positive electrode plate are provided, and a high DC voltage is applied between them. Since the corrugated dust collection filter is arranged in a meandering manner between both electrode plates, corona discharge is likely to occur, and dust can be collected with high dust collection efficiency.
This has the effect of making the device compact.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the dust collector for an air purifier according to the present invention, FIG. 2 is a partially enlarged view of the charging part in FIG. 1, and FIG. FIG. 4 is a plan view of the negative electrode, and FIG. 5 is a configuration diagram showing a conventional dust collector of an air cleaner. In the figure, (4) is a DC high voltage power supply, and (7) is an air flow. (12b) is a positive electrode plate, (12c) is a protrusion, (13b)
is a negative electrode plate, (14) is a dust collection filter, and (15) is a blower. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A blower that generates an air flow, a positive electrode plate that is composed of a mesh plate and is arranged in parallel along the air flow and has a protrusion at its tip, a negative electrode plate that is arranged alternately in parallel with the positive electrode plate, and a A collection of air purifiers comprising a high-voltage power source that applies a DC high voltage between an electrode plate and a negative electrode plate, and a dust collection filter formed in a wave shape and meanderingly arranged between the positive and negative electrode plates. dust equipment.