JPH02103B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air purifier used for purifying the air inside a car or the like.

Conventionally, as shown in FIG. 1a, a high-potential discharge electrode 11 is provided near the air intake port 10a in the air purifier main body 10, and is provided oppositely above and below the discharge electrode 11 at a predetermined interval. And air outlet 1
A pair of dust collection electrode plates 12a, 12b with earth potential extended to the 0b side and the dust collection electrode plates 12a, 12b.
and the air outlet 10 of the discharge electrode 11
In an air purifier equipped with a high-potential intermediate electrode plate 12c extending at a predetermined distance from the intermediate electrode plate 12c on the b side, an air purifier main body is provided on the air outlet 10b side of the dust collecting electrode plates 12a, 12b. 2. Description of the Related Art An air cleaner for automobiles is known, which is provided with a blower 13 for sucking air containing dust.

However, in such an air purifier, the intermediate electrode plate 12c and the suction port 1 of the dust collecting electrode plates 12a, 12b
Since an electric field is also formed between the air inlet 0a and the end portion 0a, there is a problem in that an airflow is generated in the direction of the air intake port 10a, causing windage loss. In addition, air outlet 1
Since the blower 13 must be provided to blow air to the 0b side, there are problems in that not only the air purifier body 10 becomes large in size, but also the blower 13 generates a large amount of noise.

In addition, as shown in FIG. 1b, two dust collecting electrode plates 20a are arranged vertically in parallel at a predetermined interval,
20b and a discharge electrode 21 provided on the outside of one side of the dust collecting electrode plates 20a and 20b,
An air purifier is known in which the dust collection electrode plates 20a and 20b are set to earth potential, the discharge electrode 21 is set to a high voltage, and a voltage of approximately half of the voltage of the discharge electrode 21 is applied to the intermediate electrode plate 20c located in the middle. There is. However, in this air purifier, like the air purifier shown in FIG. 1a, the dust collecting electrode plate 20a,
The electric field formed between the dust collecting electrode plates 20b and the intermediate electrode plate 20c causes windage damage, and since the discharge electrode 21 is provided on the outside of one side of the dust collecting electrode plates 20a, 20b, the dust collecting electrode plates 20a, An electric field and corona discharge mainly occur between one end of the dust collecting electrode plates 20b and the discharge electrode 21, and it is difficult to generate wind force and form a sufficient corona discharge in the direction of the other side of the dust collecting electrode plates 20a and 20b. , the air purification ability was low.

In view of the above-mentioned conventional problems, the present invention aims to provide an air purifier that generates sufficient wind power to purify the air without providing a blower. Embodiments of the present invention will be described below based on the drawings.

FIGS. 2 and 3 show an embodiment of the present invention. Reference numeral 30 is an oblong box-shaped air purifier body for automobiles (hereinafter simply referred to as the purifier body), with both longitudinal sides shown in the drawings. An air inlet 31 (hereinafter simply referred to as an inlet) which is open and allows air containing dust to flow in, and an air outlet 32 (hereinafter simply referred to as an outlet) through which purified air flows out are formed.

Reference numerals 40, 41, and 42 denote three dust collecting electrode plates arranged in parallel in the purifier main body 30 at equal intervals in the vertical direction. The dust collecting electrode plate 42 extends from the suction port 31 side to the blowout port 32 side along the inner surfaces of the upper plate 30a and lower plate 30b of the purifier main body 30, and the dust collecting electrode plate 42 located between them It extends from approximately the center in the longitudinal direction toward the air outlet 32 side.

Reference numeral 50 denotes a discharge electrode formed in the shape of a thin line or needle, which is located on the suction port 31 side of the middle dust collecting electrode plate 42 and approximately at the end of the upper and lower dust collecting electrode plates 40, 41 on the suction port 31 side. part and the intermediate dust collection electrode plate 4
They are arranged at approximately equal intervals from the end of the suction port 31 side of the two.

Reference numeral 60 denotes an electrode plate for forming an electric field, which is similar to the dust collecting electrode plate 4.
0, 41, and 42, and are arranged at a predetermined interval on the suction port 31 side of the discharge electrode 50.

Although not shown, each of the dust collecting electrode plates 40,
41 and 42 are set to earth potential, and a high voltage is applied to the discharge electrode 50 and the electric field forming electrode plate 60 by a high voltage power supply.

Note that 70 and 71 are louvers provided at the inlet 31 and outlet 32 of the purifier main body 30, respectively, and 80 is a prefilter formed in a mesh shape.
It is provided between the suction port 31 and the electric field forming electrode plate 60, and removes relatively large dust entering from the suction port 31. 90 is an activated carbon filter mixed with activated carbon, which connects the air outlet 32 and the dust collecting electrode plates 40, 41,
42, and deodorizes the air flowing through the purifier main body 30.

Since the present invention is configured as described above, when a high voltage is applied to the discharge electrode 50 and the electric field forming electrode plate 60 from a high voltage power supply, a corona occurs between the dust collecting electrode plates 40, 41, and 42 at ground potential. As discharge occurs, an electric field is formed between the discharge electrode 50 and the dust collection electrode plates 40, 41, and 42 in the direction of the air outlet 32, as shown in FIG. An electric field in the direction of the air outlet 32 is also formed between the plate 60 and the dust collecting electrode plates 40 and 41. Therefore, molecules in the air reach the discharge electrode 5 due to corona discharge.
The air is ionized to the same polarity as zero and moves along the flow of both electric fields, and this continuous movement of air causes a large amount of air to flow from the inlet 31 to the outlet 32 side.

Further, the discharge electrode 50 is connected to the dust collecting electrode plate 4.
Since the discharging electrode 50 and the dust collecting electrode plate 40, 4 are disposed between the ends on the suction port 31 side of the
1, a strong electric field is formed toward the outlet 32 side, and a strong wind force is generated toward the outlet 32. In addition, a strong corona discharge is obtained, and dust in the air is also charged to the same polarity as the discharge electrode 50. Therefore, the electric field generated by the discharge electrode 50 causes the dust collecting electrode plates 40, 41, 4 to
2 attracts and captures dust, and the dust in the air is reliably removed. Incidentally, even if the dust adsorbed and captured by the dust collecting electrode plates 40, 41, 42 loses its charge, the dust collecting electrode plates 40, 41, 42 may be damaged due to the unevenness of the dust collecting electrode plates 40, 41, 42, the viscosity of the dust, etc. It will not fly away from 42.

Furthermore, since the dust collection electrode plates 40, 41, and 42 are set to the same ground potential without providing a high voltage intermediate electrode plate, each dust collection electrode plate 40, 4
Since no electric field is generated in the opposite direction between the air outlet 1 and the air outlet 32, the wind blown toward the air outlet 32 is not affected by wind loss.

In the above embodiment, the upper and lower dust collecting electrode plates 40, 4
1, an intermediate dust collecting electrode plate 42 is provided between the two.
Even if the dust collecting electrode plate 42 is not provided, the dust collecting electrode plate 4
0,41, discharge electrode 50 and electric field forming electrode plate 6
0, a strong electric field is formed between the air outlet and the air outlet 32, and wind is formed in the direction of the air outlet 32.

As explained above, the first invention includes a discharge electrode that charges dust in the air by corona discharge, and a discharge electrode that is disposed at least above and below the discharge electrode at a predetermined interval and located slightly closer to the air intake port than the discharge electrode. a pair of dust collecting electrode plates extending from the air outlet toward the air outlet;
an electrode plate for forming an electric field extending from a position slightly closer to the air intake port than the discharge electrode toward the air outlet side, and each of the dust collecting electrode plates is set at a lower potential than the discharge electrode and at the same potential as each other; Since the electric field forming electrode plate is set to the same potential as the discharge electrode, an electric field is formed between the discharge electrode and the dust collection electrode plate in the direction of the outlet, and the electric field forming electrode plate Since an electric field is formed between the air purifier and the dust collecting electrode plate in the direction of the outlet, a large amount of air in the air purifier flows from the inlet to the outlet, eliminating the need for a blower and reducing noise. It has the advantage of not only being compact and inexpensive, but also not only does it never occur. In addition, since each dust collection electrode plate has a low potential and is set to the same potential as each other, an electric field is not generated between each dust collection electrode plate from the air outlet to the air intake port, and the air is purified. There is no risk of wind damage caused by the wind flowing inside the vessel. Further, since the dust collecting electrode plate is disposed above and below the discharge electrode at a predetermined interval and extends from a position slightly closer to the air intake port than the discharge electrode toward the air outlet side, the discharge electrode 50
A strong electric field and a strong wind force are generated between the dust collecting electrode plate and the air outlet side, and a strong corona discharge is also obtained, ensuring that dust in the air is charged and the air is purified. It also has the advantage of being carried out.

The second invention also includes a discharge electrode that charges dust in the air by corona discharge, and a discharge electrode that is disposed at least above and below the discharge electrode at a predetermined interval and that discharges air from a position slightly closer to the air intake port than the discharge electrode. a pair of dust collecting electrode plates extending toward the air outlet; and at least one dust collecting electrode located between the pair of dust collecting electrode plates and extending from a position closer to the air outlet by a predetermined distance than the discharge electrode toward the air intake port. plate, and an electric field forming electrode plate extending from a position slightly closer to the air inlet than the discharge electrode toward the air inlet, and each of the dust collecting electrode plates is set at a lower potential than the discharge electrode and at the same potential as each other. Since the electric field forming electrode plate is set to the same potential as the discharge electrode, it not only has the effect of the first invention, but also has the effect of the first invention. An electric field is also formed between the dust collecting electrode plate, the discharge electrode, and the electric field forming electrode plate, which extend a predetermined distance from a position near the air outlet to the air outlet. Since the electric field in the direction becomes stronger and the resulting wind force becomes stronger, the amount of dust drawn in from the air intake port per unit time increases. In addition, since dust is also attracted and captured by the dust collection electrode plate, the cleaning effect is further improved.

[Brief explanation of drawings]

The drawings are provided to explain the present invention, and FIGS. 1a and 1b schematically show a conventional air purifier.
FIG. 1a is a cross-sectional view showing one example, FIG. 1b is an explanatory view showing another example, FIGS. 2 and 3 show an air purifier according to the present invention, and FIG. 2 is a cross-sectional view. figure,
FIG. 3 is an explanatory diagram showing the main parts. In the figure, 30... Air purifier main body, 31... Air intake port, 32... Air outlet, 40, 41, 42
... Dust collection electrode plate, 50 ... Discharge electrode, 60 ... Electrode plate for forming electric field.

Claims (1)

[Claims] 1. A discharge electrode that charges dust in the air by corona discharge; A pair of dust collecting electrode plates extending toward the air outlet side, and an electric field forming electrode plate extending from a position slightly closer to the air inlet than the discharge electrode toward the air inlet, each of the dust collecting electrode plates being connected to the discharge outlet. An air purifier characterized in that the electric field forming electrode plate is set at a lower potential than the electrodes and at the same potential with each other, and the electric field forming electrode plate is set at the same potential as the discharge electrode. 2. A discharge electrode that charges dust in the air by corona discharge, and a pair of discharge electrodes arranged at a predetermined distance above and below the discharge electrode and extending from a position slightly closer to the air intake port than the discharge electrode to the air outlet side. at least one dust collecting electrode plate located between the pair of dust collecting electrode plates and extending from a position closer to the air outlet by a predetermined distance than the discharge electrode toward the air suction port, and the discharge electrode. and an electrode plate for forming an electric field extending from a position slightly closer to the air inlet than the air inlet, each of the dust collecting electrode plates being set at a lower potential than the discharge electrode and the same potential as each other, and forming the electric field. An air purifier characterized in that an electrode plate is set at the same potential as the discharge electrode.