JPS6026583B2 - electric dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic precipitator that charges dust and electrically adsorbs it to collect the dust, and its purpose is to prevent dust from adhering to discharge wires, The objective is to provide an innovative structure that facilitates equipment maintenance.

As shown in Fig. 1, the configuration of the electrode section of the secondary electric precipitator includes a collection electrode 100 arranged parallel to the air flow, and a collection electrode 100 arranged at an opposite potential to the dust collection electrode 100, and Electrode 1
It consists of a counter electrode 101 arranged between 00 and 100, and a discharge wire 102 having the same polarity as the counter electrode 101 and installed in front of the counter electrode 101. Dust is charged by the discharge wire 102, and in the process of passing between the dust collecting electrode 100 and the counter electrode 101, the charged dust is adsorbed by the dust collecting electrode 100, thereby performing dust collection.

Therefore, the discharge wire 102 is constantly exposed to contaminated air, causing a problem of dust adhering to the discharge wire 102 and deterioration of performance.

In other words, when cigarette smoke or oil mist such as lard or salad oil is inhaled, oil or dirt adheres to the discharge wire, which reduces the discharge of the discharge wire and reduces the charging ability of the bonito family. A major problem arises in that the dust collection efficiency is drastically reduced. In conventional dust collectors, as a countermeasure to this problem, it is necessary to clean the discharge wire and remove attached dust at regular intervals, but this work also requires cutting the discharge wire or removing tension. This makes it difficult for ordinary household users to implement the system. The present invention provides an epoch-making electrostatic precipitator that solves the above-mentioned conventional problems.

That is, in the present invention, the discharge wire is not brought into direct contact with the dust-containing air, and a shower of ions is created outside the dust-containing air stream, and this is blown into the dust-containing air to charge the dust particles. A structure is added to prevent dust from adhering to the discharge wire. Examples thereof will be described in detail below based on the accompanying drawings. In FIG. 2, 1 is a casing of an electrostatic precipitator, and 2 is an intake ○ of this casing 1, into which dust-containing air is drawn.

3 is an exhaust port of the casing 1, from which purified air is exhausted.

Reference numeral 4 denotes a ventilation path formed between the intake air □ 2 and the exhaust port 3, and air is circulated through the ventilation path 4 by a fan 5.

Reference numeral 6 denotes an ion generating section formed by passing through the ventilation path 4, and in this embodiment, it is constituted by a recess facing the ventilation path 4.

Reference numeral 7 denotes a discharge wire disposed within the ion generating section 6, to which the positive electrode of the high voltage power supply 8 is connected.

Reference numeral 9 denotes a counter electrode provided in a direction substantially perpendicular to the air flow flowing in front of the ion generating section 6 with respect to the discharge wire 7 and on the opposite side of the ventilation path 4, and connected to the negative electrode of the high voltage power source 8. There is.

Reference numeral 10 denotes a dielectric filter provided at the rear of the ventilation path 4 where it is not affected by the discharge from the discharge wire 7, and the rear is connected to the negative electrode of the high-voltage power source 8 like the counter electrode 9.

Reference numeral 11 denotes a ventilation path for returning exhaust gas that connects a part of the exhaust port 3 and an air discharge port 12 provided on the wall inside the ion generating section 6, and a part of the exhaust gas that has passed through the dielectric filter 10 and has been purified is The portion is attached to the discharge wire 7 and the counter electrode 9.

In the above configuration, when a voltage is applied between the discharge line 7 and the counter electrode 9, a divergent electric field is formed from the discharge line 7 toward the opposite side of the counter electrode 9, and ions generated near the discharge line 7 are Ions move along this electric field and are irradiated into the ventilation path 4 like a shower.

Therefore, the dust in the contaminated air flowing through the air passage 4 is charged by the ion shower, and the dielectric filter 1
W is collected. A part of the clean air that has passed through the dielectric filter 10 is guided to the ion generating section 6 through a ventilation path 11 for returning exhaust gas, and then enters the ventilation path 4. This creates a flow of air from the wall of the ion generating section 6 toward the ventilation path 4, and since the discharge wire 7 and the counter electrode 9 enter the clean air flow, the falling air passing through the ventilation path 4 flows into the ionization section. It is possible to prevent dust from going around to the discharge wire 6 and from adhering to the discharge wire 7 and the like. FIG. 3 shows another embodiment of the present invention, in which an air permeable electrode such as a wire mesh is used as the counter electrode 13.

In this case, since clean air is discharged from the entire surface of the counter electrode 13, substantially the entire area of the ion generating section 6 can be covered with clean air. FIG. 4 shows yet another embodiment of the present invention,
In this case, the blower 14 is placed in the middle of the ventilation path 11',
Even when the ventilation path 11' is long, sufficient air can circulate there.

In addition, there is no need to worry about pressure loss within the ventilation unit 11'.
The positions of the air inlet 15 and the air outlet 12' can be freely selected. Thus, according to the present invention,
The discharge wire that charges the dust is placed outside the ventilation path, and the dust can be charged by irradiating ions from there into the ventilation path, so the discharge wire can completely escape from dust adhesion. The present invention has the advantage that it does not cause a reduction in discharge capacity or dust collection efficiency due to the adhesion of tobacco grime or oil, and can significantly reduce maintenance such as cleaning and replacing discharge wires. In case,
Since the collected clean air is led to ionized Tokyo and blown onto electrodes such as discharge wires, it is possible to further reduce the adhesion of dust, making it possible to provide an electric dust collector that can pass through places such as kitchens where there is a lot of oil mist. .

Further, in the present invention, the clean air guided to the ionization section further promotes the irradiation of the ion shower onto the ventilation passage, thereby making the dust more accurately charged and increasing the dust collection efficiency.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of a conventional example, FIG. 2 is an explanatory diagram of the configuration of an electrostatic precipitator in one embodiment of the present invention, FIG. 3 is an explanatory diagram of the configuration of another embodiment, and FIG. 4 is an explanatory diagram of the configuration of another embodiment. FIG. 2 is an explanatory diagram of an example configuration. 2...Intake port, 3...Exhaust port, 4...
...Vent passage, 6...Ion generation part, 7...
...Discharge wire, 9,13...Counter electrode, 10
... Dust collection section [dielectric filter], 11, 11...
...Vent passage, 12,12...Air discharge port, 14...
··Blower. Figure 1 Figure N Ship chart dimensions

Claims (1)

[Scope of Claims] 1. A ventilation path connecting an intake port and an exhaust port, an ion generation section located outside the ventilation path and facing the ventilation path, and an ion generation section located behind the ion generation section within the ventilation path. The ion generating section includes a discharge wire and a counter electrode whose center lines intersect with the ventilation path, and the discharge wire The counter electrodes are arranged to face each other so as to be located on the opposite side of the ventilation passage so that ions are irradiated into the ventilation passage, and the ion generation part and the rear of the dust collection part are connected to each other. An electrostatic precipitator that communicates with the air passage through an air passage different from the air passage mentioned above and blows clean air to the discharge wire. 2. The electrostatic precipitator according to claim 1, wherein the counter electrode is a breathable electrode and is formed so as to surround an air outlet provided in the ion generating section and communicating with the other air passage. 3. The electrostatic precipitator according to claim 1, wherein a blower is provided in the middle of the separate ventilation path.