JPH0263561A - Dust collecting device for air cleaner - Google Patents

Abstract

PURPOSE:To eliminate the need of the metallic net which generates the dielectric polarization in a dust collecting filter by providing a dust collecting filter in the downstream side of a charged part, and the deodorizing filter with the deodorizing material impressed with a negative voltage in the downstream side of the dust collecting filter. CONSTITUTION:Air flow is passed through a charged part 1 where a high voltage of DC is impressed between discharge wires 2 and the confronting electrode plates 3. A dust collecting filter 5 is provided in the downstream side of the charged pert 1, and a deodorizing filter 6A is disposed in the downstream side of the dust collecting filter 5 and a negative voltage is impressed to the deodorizing material of the deodorizing filter. As a result, the need of the metallic net which generates the dielectric polarization in the dust collecting filter is eliminated.

Description

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

[Prior Art] FIGS. 5 and 6 are diagrams showing a conventional dust collector of an air cleaner disclosed in, for example, Japanese Unexamined Patent Publication No. 62-4453.
FIG. 5 is an exploded perspective view, and FIG. 6 is an electrical connection diagram.

In the figure, (1) is a charging part installed on the upstream side of air flow A, and a discharge wire (2) in which a tungsten wire or the like is arranged in parallel, and a discharge wire (2) in which a tungsten wire or the like is arranged in parallel opposite to this with an air gap in between. The discharge wire (2) is connected to the positive electrode of a DC high voltage power source (4), and the electrode plate (3) is also connected to the negative electrode. (5) is arranged on the downstream side of the charging part (1) (downstream side of air flow A, the same applies hereinafter), and is made of polypropylene,
Dust collection filter made of dielectric material such as polyethylene, (6)
is a deodorizing filter made of carbon fiber etc. placed downstream of the dust collection filter (5), and (7) is a wire mesh placed downstream of the deodorizing filter (6), which is connected to the negative electrode of the DC high voltage power supply (4). It is connected. The charging part (1), the dust collection filter (5), the deodorizing filter (6), and the wire mesh (7) are housed in a frame (not shown), and the airflow A sucked in by the blower (not shown) passes through them. Then, the air is blown out into the room again.

The dust collector of a conventional air purifier is configured as described above.
Indoor air containing dust is sucked in and passes through the charging section (1). In the charging section (1), a positive voltage is applied to the discharge wire (2) and a negative voltage is applied to the electrode plate (3).
) 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 the wire mesh (7),
Negative dielectric polarization occurs on the upstream side surface (left side surface in FIG. 6) of the dust collection 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), they are discharged and neutralized with the electric charge of the dust filter (5), thereby reducing the collection efficiency of the dust filter (5). However, since there is a wire mesh (7) to which a negative voltage is applied on the downstream side of the dust collection filter (5), an electric field is generated between the discharge wire (2) and the wire mesh (7), and the dust collection filter (5) is The dust particles are polarized in a state in which they are attached, thereby extending the life of the dust collecting filter (5). Note that the odor in the pneumatic flow A is removed when it passes through the deodorizing filter (6).

In this way, the indoor air sucked into the cabin is blown back into the cabin as clean, dust-free and deodorized air, and this process is repeated thereafter.

[Problem to be solved by the invention] In conventional air purifier dust collectors like the one above.

This is because a dust collection filter (5) is provided downstream of the charging section (1) to generate dielectric polarization.

There is a problem that a wire mesh (7) to which a negative voltage is applied is required, resulting in an increase in the number of parts.

This invention was made in order to solve the above problems, and it is an object of the present invention to provide a dust collector for an air purifier that can eliminate the need for a wire mesh for generating dielectric polarization in the dust collection filter. purpose.

[Means for Solving the Problems] A dust collection device for an air cleaner according to the present invention includes a dust collection filter provided downstream of a charging section, and a negative voltage applied to a deodorizing material downstream of this dust collection filter. It is equipped with a deodorizing filter.

Further, a dust collector for an air purifier according to another aspect of the present invention is provided with a conductive filter in which a dielectric material is coated with conductive paint and a negative voltage is applied to the dielectric material on the downstream side of the charged part. be.

[Function] In this invention, since the deodorizing filter to which a negative voltage is applied to the deodorizing material is provided, the deodorizing filter itself has a function of generating dielectric polarization in the dust collection filter.

Further, in another aspect of the present invention, a conductive filter in which a dielectric material is coated with a conductive paint is provided, so that the dust collecting filter and the wire mesh are integrated.

[Embodiment] Figures 1 and 2 are diagrams showing an embodiment of the present invention, with Figure 1 being an exploded perspective view and Figure 2 being an electrical connection diagram. Parts similar to those of the conventional device are designated by the same reference numerals. Indicated by

In the figure, (6A) is a deodorizing filter filled with a carbon fiber molded product as a deodorizing material, and is connected to the negative electrode of a DC high voltage power source (4). A dust collection filter (5) is arranged upstream of the deodorizing filter (6A).

In the air purifier dust collector configured as described above, a negative voltage is applied to the deodorizing material, so negative dielectric polarization is generated on the downstream surface of the dust filter (5), and Positive dielectric polarization occurs on the surface.

Therefore, as described above, the positively charged dust particles are attracted and collected by the dust collecting filter (5), and the odor is removed by the deodorizing filter (6A).

In this way, the deodorizing filter (6A) becomes an integrated structure of the deodorizing filter (6) and the wire mesh (7) shown in FIG. 6, so the wire mesh (7) becomes unnecessary. In addition, a deodorizing filter (
The deodorizing material in 6A) is not limited to carbon fiber, but may be activated carbon or a conductor with catalytic action.

3 and 4 are diagrams showing other embodiments of the present invention,
Figure 3 is a perspective view, Figure 4 is an electrical connection diagram, (5A)
is a conductive filter made of a dielectric filter coated with conductive paint, and is connected to the negative pole of the DC high voltage power supply (4).

In other words, the conductive filter (5A) is a combination of the dust collecting filter (5) and the wire mesh (7) shown in Fig. 6, so the gold m (7) is unnecessary and the conductive filter (5A)
By applying a negative voltage to the filter, it is possible to attract positively charged dust particles, compensate for the decrease in the collection effect as a dust collection filter, and extend its life. Note that the conductive filter (5) can be manufactured at low cost by appropriately selecting a dielectric material as a material.

[Effects of the Invention] As explained above, in this invention, a dust collection filter is provided downstream of the charging section, and a deodorization filter in which a negative voltage is applied to the deodorizing material is provided downstream of this dust collection filter. This has the effect of eliminating the need for a wire mesh for generating dielectric polarization in the dust filter.

In addition, in another aspect of the present invention, a conductive filter is provided downstream of the charging section, the dielectric material is coated with conductive paint and a negative voltage is applied to the conductive filter, which similarly eliminates the need for a wire mesh. There is an effect that can be done.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the dust collector for an air cleaner according to the present invention, Fig. 2 is an electrical connection diagram of Fig. 1, and Fig. 3 is an exploded perspective view showing another embodiment of the invention. 4 is an electrical connection diagram of FIG. 3, FIG. 5 is an exploded perspective view showing a conventional dust collector of an air cleaner, and FIG. 6 is an electrical connection diagram of FIG. 5. In the figure, (1) is a charging part, (2) is a discharge wire, (3) is an electrode plate, (4) is a DC high voltage power supply, (5) is a dust collection filter,
(5A) is a conductive filter, and (6A) is a deodorizing filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) A charged section through which a high DC voltage is applied between the discharge wire and the electrode plate facing it and through which airflow passes, a dust collection filter provided downstream of this charged section, and a downstream side of this dust collection filter. A dust collection device for an air purifier, comprising: a deodorizing filter provided in a deodorizing material and having a negative voltage applied to the deodorizing material. (2) A charged section where a high DC voltage is applied between the discharge wire and the electrode plate facing it and through which airflow passes, and a conductive material is coated on the dielectric provided downstream of this charged section and a negative voltage is applied to this. A dust collector for an air purifier, comprising a conductive filter.