JPH0248050Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of application of the invention) The present invention relates to an ionic wind air purifier that can obtain purified air by using ionic wind induced by corona discharge. .

(Background of the invention) As a conventional ion air air purifier of this type, there is one shown in FIGS. 1 and 2, for example. This ionizing air purifier has a plurality of ionized wires 2 stretched and supported by a plurality of ionized wire support plates 1 whose sides are formed in a substantially U-shape, and these ionized wires 2 are sandwiched at the intake port side. It has a plurality of dust collecting electrode plates 3 arranged in such a manner that the dust collecting electrode plates 3 and a plurality of discharge electrode plates 4 are located between the dust collecting electrode plates 3 and on the exhaust port side of the dust collecting electrode plates 3, Turn on the high-voltage DC power supply 5, and connect the dust collecting electrode plate 3, the ionization wire support plate 1, the ionization wire 2, and the discharge electrode plate 4 with
By applying a high voltage of 15 kV, an ion wind is induced by the corona discharge generated between the ionization wire 2 and the dust collecting electrode plate 1, and an air current moving in the direction of the dust collecting electrode plate 3 is generated. Dust contained in the ion wind is collected by adhering to the inner surface of the charged dust collecting electrode plate 3.

However, in such conventional ion wind air purifiers, the ion wind flowing due to corona discharge flows linearly from the intake port side to the exhaust port side, that is, the direction of the air flow and the dust collecting electrode plate 3 Since the dust particles with a large mass have a large inertial force due to the air flow, the dust particles have a large amount of inertia due to the large mass of the dust particles, and therefore, when passing through the dust collection section, they are Dust is not attached and blows through, making it impossible to collect dust effectively. In order to collect large particles of dust with a large mass, the dust collecting electrode plate may be made long, but this increases the size of the entire dust collecting device. In addition, it is possible that the dust collection effect can be improved by strengthening the electric field, but if the electric field is strengthened, the wind speed increases, making it impossible to expect effective dust collection, and there are problems such as arc discharge being more likely to occur. .

(Purpose of the invention) The present invention was made by focusing on the problems of the conventional method, and the axial direction of the exhaust port is located approximately perpendicular to the axial direction of the ion air intake port. In addition, the present invention provides an ionic wind air purifier that can solve the above-mentioned problems by providing a corona discharge property in the center of the intake port in a direction perpendicular to the mouth axis of the intake port. The purpose is to

(Example of the invention) The invention will be explained in detail below based on the example shown in FIGS. 1 and 2.

10 is a container frame of an air purifier, and this container frame 1
0 is formed into a flat cube, with an intake port 12 formed in the center of the upper wall 11, and exhaust ports 13 formed on each of the four sides of the container frame 10. Inside this container frame 10, there is a lower wall 14.
A lower dust collection electrode plate 15a positioned parallel to the wall surface of the upper wall 11, and an upper dust collection electrode plate 15b positioned parallel to the upper wall surface 11 are provided. Electrode plate 15a and upper dust collecting electrode plate 1
5b, an ionized wire 17 supported by an ionized wire support plate 16 is arranged on the intake port 12 side, and a counter electrode plate 18 is arranged on the exhaust port 13 side. The central part of the lower dust collecting electrode plate 15a, that is, the part directly below the intake port 12, is formed as a corona discharge part 15a'.
An insulating cap 19 for supporting the discharge electrode is provided at the center of a', and a needle-shaped discharge electrode 20 is fixedly supported in an upright manner by the insulating cap 19. 21 is a high-voltage DC power supply, and the upper and lower dust collecting electrode plates 15
A high voltage of, for example, 7 to 12 kV is applied between the electrodes a and 15b, the ionization wire support plate 16, the ionization wire 17, the counter electrode plate 18, and the acicular discharge electrode 20.

Describing its effect next, the application of the above-mentioned high voltage generates an airflow from the intake port 12 toward each exhaust port 13, and the dust contained in this airflow is
It is charged by corona discharge from the needle discharge electrode 20. Here, large particles (dust) with large mass are
The airflow bends approximately at right angles from the intake port 12 to the exhaust port 13
Since the large mass of the dust is guided in the direction, due to its inertia, it cannot bend in the right angle direction and mainly collides with the central part of the lower dust collecting electrode plate 15a, that is, the corona discharge part 15a'. It is adsorbed, thereby increasing the dust collection effect. Further, since more of the dust is adsorbed onto the dust collection electrode plate 15a before reaching the ionization wire 17, the life of the corona discharge by the ionization wire 17 is extended and the durability of dust collection is improved. It's also effective.

The opening area of the intake port 12 is the same as that of each exhaust port 13.
It is desirable to set it approximately equal to the total area.
Further, in the above embodiment, the exhaust ports 13 are formed in four directions, but the invention is not limited to this.
For example, it may be unidirectional.

(Summary of the invention) As described above, the present invention provides the corona discharge section 15
An ionizing electrode 20 is disposed near the edge of the dust collecting electrode plate 15a on the side of the inlet port, which has a diameter of 15. The dust collection electrode plates 15a and 15b, which form a corona discharge part and are energized to the same polarity as the corona discharge part 15a', are placed on the dust collection surface in a direction crossing the direction of the intake air flow by the corona discharge part. This is an ionic air purifier characterized by forming a

(Effect of the invention) Therefore, according to this ionic wind air purifier, the intake air flow taken in from the intake port is configured to easily come into contact with the dust collection surface of the dust collection electrode plate. In particular, dust with a large mass is easily adsorbed on the dust collection surface, and there is an effect that the dust collection efficiency can be increased without increasing the size of the structure. In addition, according to this ionizing air purifier, since the amount of dust collected on the windward side of the ionization line 17 is large, the amount of dust adhering near the ionization line 17 is small, and the amount of dust adhering to the ionization line 17 is small.
7 and the dust collecting electrode plates 15a, 15b is maintained constant over a long period of time, making it difficult to shift from corona discharge to arc discharge. Therefore, there is also the effect of ensuring stable corona discharge over a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view showing an embodiment of the ion wind air purifier according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is an explanatory diagram of a conventional example.
FIG. 4 is a perspective view thereof. 10... Container frame, 11... Upper wall, 12... Intake port, 13... Exhaust port, 14... Lower wall, 15a, 1
5b... Dust collection electrode plate, 16... Ionization line support plate,
17...Ionization line, 18...Counter electrode plate, 19...
... Cap, 20 ... Needle discharge electrode, 21 ... High voltage DC power supply.

Claims (1)

[Scope of utility model registration request] Dust collecting electrode plate 15 having a corona discharge part 15a'
An ionizing electrode 20 is disposed near the edge on the intake port side of a to form a corona discharge section 15a' that induces an ion wind to suck and exhaust the processing air, and also charges dust in the processing air. The dust collection electrode plates 15a and 15b, which are energized to the same polarity as the corona discharge part 15a', are arranged to form a dust collection surface in a direction intersecting the direction of the intake air flow by the corona discharge part. An ionizing air purifier characterized by having an ionizing wire 17 arranged between dust collecting surfaces.