JPH0118779B2 - - 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,
In an air purifier in which the dust collecting electrode plates 20a and 20b are set to earth potential and a discharge electrode 21 is provided,
An air purifier is known in which a high voltage is applied to the discharge electrode 21, and a voltage approximately half of that of the discharge electrode 21 is applied to an intermediate electrode plate 20c located in the middle. However, in such an air purifier, the dust collection electrode plates 20a, 20 are similar to the air purifier shown in FIG.
The electric field formed between the dust collecting electrode plates 20a and 20c causes wind damage, and since the discharge electrode 21 is provided on the outside of one side of the dust collecting electrode plates 20a and 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. 2a and 2b show a first embodiment of the present invention, and 30 is an oblong box-shaped car air purifier body (hereinafter simply referred to as the purifier body); An air inlet 31 (hereinafter simply referred to as an inlet) through which air containing dust flows 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 indicate 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 inlet 31 side to the outlet 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.

Reference numeral 70 denotes a net-like discharge compatible electrode formed in a semicircular cross-section, the outer surface of which in the radial direction is connected to the end of the dust collection electrode plates 40, 41 on the suction port 31 side and the suction port 31 of the dust collection electrode plate 42. The discharge electrode 50 is arranged so as to be in contact with one end of the side and located at the center of the arc.

Although not shown, each of the dust collecting electrode plates 40,
41, 42 and the discharge compatible electrode 70 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 source.

Note that 80 and 81 are louvers provided at the inlet 31 and outlet 32 of the purifier main body 30, respectively, and 90 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. 100 is an activated carbon filter mixed with activated carbon, which has an air outlet 32 and dust collecting electrode plates 40, 4
1 and 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 by a high voltage power source, the discharge electrode 50 and the dust collection electrode plates 40, 41, 42 at ground potential and Corona discharge occurs between the discharge electrode 70 and the discharge electrode 50 and the dust collection electrode plate 4 as shown in FIG.
0, 41, and 42, an electric field (dotted chain line A) is formed in the direction of the air outlet 32.
An electric field (dotted chain lines B, C) in the direction of the outlet 32 is also formed between the electric field forming electrode plate 60 and the dust collecting electrode plates 40, 41, and between the discharge electrode 50 and the discharge compatible electrode 70. Therefore, the molecules in the air are ionized by the corona discharge to have the same polarity as the discharge electrode 50 and move along the flow of the electric field of the three, and this continuous movement of air causes the air to flow from the inlet 31 to the outlet 32.
A large amount of air flow to the side will occur.

Further, the discharge electrode 50 is connected to the dust collecting electrode plate 4.
0 and 41, the discharge electrode 50 and each dust collection electrode plate 40,
41 and the discharge compatible electrode 70, a strong electric field is formed toward the outlet 32, and a strong wind force is generated toward the outlet 32. In addition, similarly, a strong corona discharge is obtained and dust in the air is charged to the same polarity as the discharge electrode 50, so the dust is attracted and captured by the dust collection electrode plates 40, 41, 42 by the electric field of the discharge electrode 50. 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 electric charge, the dust collecting electrode plates 40, 41, 42
Due to the unevenness of 42, the viscosity of dust, etc., the dust collection electrode plate 4
There is no scattering from 0, 41, 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 in the direction of the air outlet 32 is not accompanied by windage loss.

In the above embodiment, the upper and lower dust collecting electrode plates 40, 4
1, an intermediate dust collection 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, a discharge electrode 50, and an electrode plate 6 for forming an electric field
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.

FIG. 3 shows a second embodiment of the present invention, in which reference numeral 110 denotes a mesh-like discharge compatible electrode formed in a semicircular cross-section, each end of which is a dust collecting electrode plate extending vertically. It contacts the ends of the inlet 31 of 40 and 41 and is arranged closer to the outlet 32 than the discharge electrode 50 with its arc center aligned with the discharge electrode 50 . Reference numeral 120 denotes an intermediate electrode plate, which is located between each of the dust collecting electrode plates 40 and 41 and is located at a predetermined interval closer to the outlet 32 than the discharge compatible electrode 110 (between the discharge electrode 50 and the dust collecting electrode plates 40 and 41). It is extended at a distance that does not affect the ion flow formed by the Although not shown, the intermediate electrode plate 120 is set to a potential of about half that of the high-potential discharge electrode 50 by the power supply, and the discharge compatible electrode 110 is set to the ground potential similarly to the dust collecting electrode plates 40 and 41. There is.

Therefore, according to this embodiment, the dust collecting electrode plates 40, 4
Due to the potential difference between the discharge electrode 50 and the intermediate electrode plate 120, an electric field (dotted chain line D) is also formed between the dust collecting electrode plates 40, 41 and the intermediate electrode plate 120. Dust that is not attracted and captured by the dust collecting electrode plates 40 and 41 due to the electric field formed between the intermediate electrode plate 120 and the like is attracted and captured by the dust collecting electrode plates 40 and 41 due to the electric field generated by the intermediate electrode plate 120.

Note that the other configurations and effects are the same as those of the first embodiment.

FIG. 4 shows a third embodiment of the present invention.
Reference numeral 130 denotes a net-like discharge compatible electrode formed with a semicircular cross section, which is connected to the discharge electrode 50 and each dust collecting electrode plate 4.
0 and 41, and are arranged on the outlet 32 side so that the center of the arc coincides with the discharge electrode 50. 140 is an intermediate electrode plate located between each dust collecting electrode plate 40, 41, and also connected to the suction port 31.
One end of the side is in contact with the discharge compatible electrode 130 and extended toward the blow-off port 32 side. Further, the discharge compatible electrode 130 and the intermediate electrode plate 140 are set to about half of the high potential of the discharge electrode 50 by a power supply (not shown), and are lower than the discharge electrode 50 and lower than the dust collection electrode plates 40 and 41 which have a ground potential. It is set to a high potential. Therefore, according to this embodiment, the discharge compatible electrode 130, the intermediate electrode plate 140, the dust collection electrode plate 40,
Due to the potential difference between the discharge outlet 3 and 41, the air outlet 3
An electric field (dotted chain line E) is formed toward the 2 side, and an airflow is generated toward the air outlet 32 side. Also, an electric field (dotted chain line F) is formed between the intermediate electrode plate 140 and each dust collecting electrode plate 40, 41. ) is formed, and dust is efficiently adsorbed and captured.

Note that the other configurations and effects are the same as those of the first embodiment.

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;
A mesh-like discharge compatible electrode is provided on the air outlet side so as to surround the discharge electrode at a predetermined distance from the discharge electrode, and an electric field forming electrode plate extends from the discharge electrode toward the air intake port side. , since each of the dust collecting electrode plates and the discharge compatible electrodes are set at a lower potential than the discharge electrode and at the same potential as each other, and the electric field forming electrode plate is set at the same potential as the discharge electrode, the discharge electrode An electric field is formed between the dust collection electrode plate and the discharge compatible electrode in the direction of the air outlet, and an electric field is also formed between the electric field forming electrode plate and the dust collection electrode plate in the direction of the air outlet. Since the air inside the air purifier flows in large quantities from the inlet to the outlet, and there is no need to install a blower, the advantage is that an air purifier that does not generate noise, is small, and is inexpensive. have

In addition, since each dust collection electrode plate is set at a low potential and the same potential, an electric field in the opposite direction is not formed between each dust collection electrode plate, and the air flowing through the air purifier is There is no risk of wind damage.

Furthermore, since the dust collection electrode plates are arranged vertically at a predetermined interval and extend from a position slightly closer to the air intake port than the discharge electrode to the air outlet side, the connection between the discharge electrode and the dust collection electrode plate is reduced. During this process, a strong electric field and a strong wind force are generated toward the air intake port, and there is also the advantage that a strong corona discharge is obtained, and dust in the air is reliably charged, ensuring that the air is purified. .

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 side; an intermediate electrode plate positioned between the pair of dust collecting electrode plates and extending further toward the air blowing outlet side than the discharge electrode; and the discharge electrode and each of the dust collecting electrodes. comprising a mesh-like discharge compatible electrode disposed on the air outlet side so as to surround the discharge electrode at a predetermined distance from the electrode plate, and an electric field forming electrode plate extending from the discharge electrode toward the air intake port side, The intermediate electrode plate and the discharge compatible electrode are set at a lower potential than the discharge electrode and at the same potential, each of the dust collection electrode plates are set at a lower potential than the discharge compatible electrode and at the same potential, and the 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 the potential difference between the intermediate electrode plate and the discharge compatible electrode and the dust collection electrode plate allows the discharge to be handled. An electric field toward the air outlet side is formed between the electrode and each dust collecting electrode plate, and an airflow toward the air outlet side is generated. Also, an electric field is formed between the intermediate electrode plate and each dust collecting electrode plate. is formed, and dust is attracted and captured more efficiently.

[Brief explanation of drawings]

The drawings serve to explain the present invention, and FIGS. 1a and 1b show an outline of a conventional air purifier, FIG. 1a is a cross-sectional view showing one example, and FIG. 1b shows another example. Explanatory drawings, FIGS. 2 to 4 show the air purifier according to the present invention, and FIG. 2a shows the air purifier according to the present invention.
FIG. 2b is an explanatory diagram showing the main parts of the second embodiment, FIG. 3 is an explanatory diagram showing the main parts of the second embodiment of the present invention, and FIG. 4 is the third embodiment of the present invention. FIG. 2 is an explanatory diagram showing main parts of the embodiment. 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, 70, 110, 130 ... Electrode for discharge, 120, 140 ... Intermediate electrode plate.

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; a net-shaped discharge compatible electrode disposed on the air outlet side so as to surround the discharge electrode at a predetermined distance from the discharge electrode; an electric field forming electrode plate extending toward the suction port side, each of the dust collecting electrode plates and the discharge compatible electrodes are set at a lower potential than the discharge electrode and at the same potential, and the electric field forming electrode plate is set to the same potential as the discharge electrode. An air purifier characterized by being set to the same potential as a discharge electrode. 2. A patent claim characterized in that a dust collecting electrode plate is provided which is set to the same potential as each of the dust collecting electrode plates, is located between the dust collecting electrode plates, and extends toward the air outlet side from the discharge compatible electrode. The air purifier according to item 1 in the scope of . 3 Set to a higher potential than each of the dust collection electrode plates and lower than the discharge electrode, and an air outlet located between the dust collection electrode plates and at a predetermined interval from the discharge compatible electrode. The air purifier according to claim 1, further comprising an intermediate electrode plate extending to the side. 4. A discharge electrode that charges dust in the air by corona discharge, and a pair of discharge electrodes arranged at a predetermined interval 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. and an intermediate electrode plate located between the pair of dust collecting electrode plates and extending toward the air outlet side from the discharge electrode, and a predetermined interval from the discharge electrode and each of the dust collecting electrode plates. a mesh-shaped discharge compatible electrode disposed on the air outlet side so as to surround the discharge electrode;
an electric field forming electrode plate extending toward the air intake port side from the discharge electrode, the intermediate electrode plate and the discharge compatible electrode are set at a lower potential than the discharge electrode and the same potential as each other, and each of the dust collecting An air purifier characterized in that the electrode plate is set at a lower potential than the discharge compatible electrode and at the same potential as each other, and the electric field forming electrode plate is set at the same potential as the discharge electrode.