JPS59199065A - Electrical dust precipitator - Google Patents

Abstract

PURPOSE:To improve dust collecting efficiency and to provide a reduction in size and economization in energy by providing plural electrical dust precipitating electrodes having a potential difference to electric discharge electrodes in the direction where ion wind passes thereby forming electrical dust precipitating units. CONSTITUTION:The 1st dust precipitating electrodes 5A, 5B connected to a high voltage device 3 and the grounded 2nd dust precipitating electrodes 6A, 6B, 6C are provided alternately at equal intervals via a metallic screen 4 of a perforated plate to electric discharge electrodes 2A, 2B connected to the device 3 in the direction where ion wind flows, thereby forming an electrical dust precipitating unit 1. Plural stages of such units 1 are disposed in series. Since the plural electrical dust precipitating units are installed in the direction where ion wind flows, the ion wind is accelerated successively, by which an increase in the high pressure ratio of the suction powder and the rate of suction is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic precipitator that collects and removes impurity particles (hereinafter referred to as dust) contained, for example, in the air.

Traditionally, many indoor air purifying devices such as air conditioners used for home and commercial purposes only maintain the indoor air temperature at an optimal state, and are not effective at collecting dust in the air. The reality is that air filters like this one are not very effective at collecting fine particles such as cigarette smoke, and the dust collection effect is very low. Improvement was required.

The present invention has been made based on the above points, and its purpose is to improve the dust collection effect, to reduce the size of the device, and to reduce energy consumption. The goal is to provide equipment.

That is, the electrostatic precipitator according to the present invention includes a discharge electrode that generates all of the ion wind and charges the particles, and a discharge electrode that is disposed at a predetermined interval parallel to the ion wind flow direction on the downstream side of the discharge electrode in the ion wind flow direction. This is a configuration in which a plurality of electrostatic precipitator units are installed in the total ion wind flow direction, and each electrostatic precipitator unit is equipped with a plurality of dust collecting camellias and has a potential difference between opposing dust collecting electrodes.

Therefore, since the flow direction of the ion wind generated from the discharge electrode toward the perforated plate is the same as the direction in which the air is trying to flow, there is little loss of kinetic energy, and air suction is performed effectively. Since a plurality of units are installed in the direction of flow of the ion wind, the ion wind can be accelerated in sequence, so that the suction pressure can be increased and the suction amount can be increased. Therefore, the suction device that was conventionally required is unnecessary, and the device can be made smaller and energy consumption can be reduced.

Furthermore, since multiple electrostatic precipitator units are installed in the direction of ion wind flow, for example, dust that cannot be collected in the first stage will be reliably collected in the second and third stages, increasing the dust collection efficiency. can be significantly improved.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an electrostatic precipitator according to this embodiment. Reference numeral ``U'' in the figure indicates an electrostatic precipitator unit, and the electrostatic precipitator has a configuration in which this electrostatic precipitator unit) lf is arranged in multiple stages (only two stages are shown in the figure) in series. First, the configuration of this electrostatic precipitator unit will be explained. That is, the discharge electrode 2 is connected to the high voltage device 3 and is configured to be capable of applying a positive or negative high voltage. 2B and a wire mesh 4 as a perforated plate are attached to this discharge electrode 2.
On the completely narrow and opposing sides, first dust collecting electrodes 5A, 5B and second dust collecting electrodes 6, 6B and 6C are arranged alternately at equal intervals, and first dust collecting electrodes 5A' , 5B corresponds to the discharge electrode 2, and 2B corresponds to the discharge electrode 2. In addition, the second dust collecting electrode 6A,
6B and 6C are grounded. The first dust collecting electrode 5A
, 5B are also connected to the high voltage device 3 to which the discharge electrodes 2A, 2B are configured so that a positive or negative high voltage can be applied thereto.

Further, the second dust collecting electrode 6 has a configuration in which both ends of 6B and 6C protrude from the first dust collecting electrode 5 as compared to 5B. On the other hand, second dust collecting electrodes 6A, 6B on the 2B side are attached to the discharge electrode 2,
Control poles 7A, 7B, and 7C are arranged at positions opposite to 6C and are connected to the high voltage device 3. These control electrodes 7A, 7B, 7C are the discharge electrodes, ? A, 2
It has the function of controlling the direction of electric lines of force generated from B. That is, control type &7A, 7B.

What about the discharge electrode to increase the voltage of 7C? A,
Most of the electric lines of force generated from 2B are directed in the direction of the wire mesh 4, thereby increasing the amount of air sucked.

As described above, the electrostatic precipitator has a configuration in which a plurality of electrostatic precipitator units L having the above-described configuration are arranged in series. This is because when a corona discharge is caused by applying, for example, a high voltage to the discharge electrode 21.2B, negative ions move to the discharge electrode 2 from the discharge electrode 2B toward the wire mesh 4 at high speed in space. These high-speed moving negative ions collide with the neutral air molecules between the discharge electrode 2, 2B, and the wire mesh 4, and are accelerated to generate an air flow (hereinafter referred to as ion wind). Therefore, by arranging a plurality of electric dust collection units in series in the direction of flow of the ion wind, the ions A are accelerated and the suction of indoor air is promoted.

In addition, in the discharge electrodes 2 after the second stage, 2B is installed with a sufficient distance (i11) on the upstream side of the ion wind.This is the first dust collection electrode 5A, 5B or the second This is to prevent discharge between the dust collection electrodes 15A, 15B, and 6C, and the generation of ion wind in the opposite direction due to the discharge.

The effect will be explained based on the above constituent sounds. For example, a 2B
and the first dust collecting electrode 5A.

A negative high voltage is applied to 5B to cause corona discharge.

As a result, the aforementioned ion wind (approximately 3 m/5 ec) is generated in the discharge electrode 2 from 2B toward the wire mesh 4. Due to the generation of ion flies, the indoor air is sucked into the wire mesh 4 side,
At the same time, dust particles such as smoke particles are also moved toward the wire mesh 4 by the ion wind and Coulomb force and are collected by the wire mesh 4.

In other words, the ion wind functions as a suction and blowing source of air, so-called self-blowing function. Particles that could not be collected by the wire mesh 4 pass through all the openings of the wire mesh 4 and reach the first dust collecting electrode 5.
A, 5f3 and second dust collecting electrode 6A y 6 B #
It flows in between 60 and 60. A negative high voltage is applied to the first dust collecting electrode 5, 5B, and therefore, the inflowing particles are transferred to the second dust collecting electrode 6 on the sides 6B and 6C due to Coulomb force. is collected by. In the above series of actions, since multiple stages of electrostatic precipitator units 1 are installed in series in the direction of ion wind flow, for example, the ion wind flowing out from the first stage electrostatic precipitator unit 1 is transferred to the second stage electrostatic precipitator unit 1. It is not accelerated at stage 1, and thereafter it is accelerated sequentially from stage 3 to stage 4.

As a result, the suction pressure can be increased, and the amount of indoor air suctioned can also be increased.

According to the electrostatic precipitator according to this embodiment, the discharge electrode, '
Since the flow direction of the ion wind generated from A and 2B toward the wire mesh 4 and the direction in which the air is trying to flow are the same, there is less loss of kinetic energy, and furthermore, the control electrodes 7A, 7B, 7C
Since the air velocity can be increased by fully adjusting the voltage, the air can be effectively drawn into the wire mesh 4 side. Since the electrostatic precipitator units 1 are installed in multiple stages in the direction of the ion wind flow, the ion wind is sequentially accelerated.
Thereby, it is possible to increase the pressure of the suction force and increase the amount of suction. Therefore, it is possible to reduce the size of the device, such as eliminating the need for a suction device that was conventionally required, and to reduce energy consumption. Furthermore, since multiple stages of electrostatic precipitator units 1 are installed in series in the direction of all ion flow, for example, dust that cannot be collected by the first stage electrostatic precipitator unit 1 can be reliably collected in the second and third stages. Therefore, the collection efficiency can be greatly improved.

As detailed above, the electrostatic precipitator according to the present invention includes a discharge electrode that generates an ion wind and charges particles, and a predetermined interval parallel to the ion wind flow direction on the downstream side of the discharge electrode in the ion wind flow direction. This is a configuration in which a plurality of electrostatic precipitator units are installed in the direction of ion wind flow, each of which has a plurality of dust collecting electrodes arranged in the same direction as each other, and has a potential difference between the facing dust collecting electrodes.

Therefore, since the flow direction of the ion wind generated from the discharge electrode toward the perforated plate is the same as the direction in which the air is trying to flow, there is little loss of kinetic energy, and air suction is performed effectively. Since a plurality of unit lions are installed in the direction of the wind flow, the ion wind can be accelerated in sequence, making it possible to increase the suction pressure and the amount of suction. Therefore, the conventionally necessary suction device is no longer necessary, and the device can be made more compact and energy consumption can be reduced.

Furthermore, since multiple electrostatic precipitator units are installed in the direction of the Lion wind flow, for example, dust that cannot be collected in the first stage will be reliably collected in the second and third stages, increasing the dust collection efficiency. Its effects can be significantly improved in dogs.

[Brief explanation of drawings]

The figure is a schematic configuration diagram of an electrostatic precipitator showing an embodiment of the present invention. l... Electrostatic precipitator unit, 2A, 2B... Discharge electrode,
511,. 5B...first dust collecting electrode, 61.6B, 6C
...Second dust collection pole.

Claims (1)

[Claims] A discharge electrode that generates an ionic wind and charges particles, and a plurality of dust collection electrodes arranged downstream of the discharge electrode in the direction of the flow of the ion wind and at predetermined intervals in parallel to the flow direction of the ion wind. An electrostatic precipitator that is characterized by multiple installations of electrostatic precipitator units with a potential difference between opposing dust collection electrodes in the direction of the Lion Air flow.