KR100308333B1 - A dust collector by frictionize-electrostatic - Google Patents

Abstract

The present invention relates to a triboelectric electrostatic precipitator.

(Purpose) In purifying indoor air, it is to provide a dust collecting device that collects particulate matter suspended in air that is difficult to be filtered by a filter to be collected by adsorption on the dust collecting plate by static electricity generated by friction. .

(Configuration) A positive electrode plate made of a sealed case made of synthetic resin, such as acrylic, inside a cylinder B having a ventilated dust collecting chamber G equipped with a blower F and a filter f, f '. p) The dust collector plates C, which serve as p), are installed in parallel spaces at regular intervals, and inside the dust collector plates C, the friction plates D are rotated by the rotation shaft s driven by the motor m, thereby forming the positive electrode plates p. The charge particles of the dust passing through the dust collecting chamber is adsorbed on the surface of the dust collecting plate charged with static electricity generated by the rotational friction with the friction plate (D) to collect and purify.

Description

Tribostatic Dust Collector {A DUST COLLECTOR BY FRICTIONIZE-ELECTROSTATIC}

TECHNICAL FIELD This invention relates to a friction electrostatic dust collector.

Dust collection includes gravitational dust collection, centrifugal dust collection, filter dust collection, inertial and collision dust collection, cleaning dust collection, electric dust collection, sound waves There are various kinds of dust collection means such as sound wave collection.

The present invention relates to a triboelectric electrostatic precipitator which belongs to the field of electrostatic precipitating technology.

In general, electrostatic precipitation includes a mechanism that generates a corona discharge by direct current high voltage, charges dust particles in air (gas), and separates the charged particles from the air by electric force in the electric field. Refers to the electrostatic precipitating method of particles.

Electrostatic precipitating is a one-stage type electrostatic precipitator in which the discharge unit and the collecting pole unit are integrated and used for general industrial purposes such as a so-called Cottrel unit. Two-stage type electrostatic precipitator with separate parts and dust collector is mainly used for air purification with low generation of harmful gases.

At this time, the electric force acting on the particles in the electrostatic precipitator is

(a) Coulomb force due to charge of charged particles

(b) force by electric field hardness

(c) attraction between particles

(d) It is known to be caused by electric wind, etc. Among them, the Coulomb force is considered to be the dominant one.

In the conventional electrostatic precipitator which charges the dust particles by corona discharge, the separation and moving speed of the particles are rapidly reduced, such as the sedimentation speed by gravity or centrifugal force in the sub-micron range. Since there is no deterioration, it is effective for dust collection of ultrafine particles and has no advantage of pressure loss.

On the other hand, as DC voltage, thousands to tens of thousands of volts should be used, and in order to maintain stable in local ionization phase of gas by corona discharge, electric field condition should be remarkably uncomfortable. When the maximum electric field strength is decreased by corona discharge, stable condition is maintained.If this condition is not satisfied, the entire discharge circuit is destroyed and spark discharge occurs in the transient state to transition to arc discharge or glow discharge. In addition, the combustion of dust produced carbon powder, which not only contaminated the air but also caused a fire.

SUMMARY OF THE INVENTION An object of the present invention is to purify air by sucking dust of ultra-fine particles that are difficult to filter with a filter to a dust collecting plate in which static electricity is generated by rotational friction between an electrostatic electrode plate and a friction plate in air purification. I'm trying to provide a device.

It is still another object of the present invention to eliminate dust of ultra-fine particles suspended in indoor air with a small power such as driving a positive electrode plate serving as a dust collecting plate and a friction plate that causes static electricity by friction, without using a high voltage of a direct current as in the prior art. It is to make it easy to clean the air by adsorption.

The present invention satisfies the object of the present invention by physically adsorbing charge fine particles to the electrostatic electrode plate which generates static electricity when the synthetic resin plate such as acrylic resin, which is a well-known electrical non-conductor, is rubbed with a cotton cloth or the like. It was applied as a new air purification means.

That is, a dust collector plate having a ventilated dust collecting chamber equipped with a filter and a blower, an electrostatic electrode plate made of a synthetic resin material such as acrylic where static electricity is generated by friction, and the dust collecting plate are described above. It is arranged in the dust collection chamber in parallel at predetermined intervals, and is composed of a friction plate which causes static electricity by rotational friction by a rotational side driven by a motor in the space of the dust collecting plate. In addition, friction cloths such as a surface are attached to both surfaces of the friction plate so as to be interchangeable, so as to contact the inner surfaces of both sides of the dust collecting plate and generate static electricity on both surfaces of the dust collecting plate. If the blower is operated while driving the friction plate continuously, the air flows into the narrow air passage between the plurality of dust collecting plates arranged in the dust collecting chamber at the tightly spaced dust. The charged particles of dust near the dust collector are adsorbed on the surface of the electrostatic dust collector and the purified air is discharged to the outside through the outlet of the cylinder.

When the dust adsorbed on the dust collecting plate stops driving of the friction plate and the static electricity is discharged and the adsorption force is lost, the dust is dropped into the collecting dust collecting container below and collected. Dust collected in the dust collecting container is taken out and cleaned like a suture.

In the present invention, in order to increase the friction surface, a plurality of positive electrode plates are formed in one case form on both sides of the friction plate so as to be rubbed with both sides of each friction plate, and the dust collecting plates are arranged in the cylindrical dust collecting chamber at close intervals. The overall adsorption area of dust can be increased.

The friction plate is provided in a sealed state in the space of the dust collecting plate, and dust is not attached to the friction plate. When the fiber layer of the cotton cloth is worn out by friction, part of the dust collecting plate is opened and the rotating friction plate is lifted to remove the surface friction cloth of the friction plate. It is possible to replace.

Since the tribostatic electrostatic precipitator of the present invention does not use a high voltage of direct current at all, there is no charging electrode or discharge electrode seen in the electric precipitator, and no spark is generated due to glow discharge or arc discharge. There is no carbonization and there is no fear of fire caused by the flame. In addition, the electrostatic precipitator can be effectively operated with only a small amount of power to drive the friction plate.

The tribostatic electrostatic precipitator of the present invention is functionally suitable for use in purifying air in homes, offices, public places, and the like.

1 is a side cross-sectional view of the present invention

2 is a cross-sectional plan view of the present invention

3 is a perspective view of the dust collecting plate

4 is a combined perspective view of the dust collecting plate

5 is a side view of the friction plate

6 is a cross-sectional view of the friction plate

[Description of Signs of Important Parts of Drawing]

A: dust collector, B: cylinder, G: dust chamber,

C: dust collecting plate, Ca: upper body, Cb: lower body,

D: friction plate, r: surface friction cloth, c: air passage,

m: motor, s: axis of rotation, p: positive electrode plate,

F blower, f: filter, g: dust collector,

i: inlet, u: outlet,

The present invention will be described in detail by way of examples with reference to the accompanying drawings.

Figure 1 is a side cross-sectional view of the present invention and Figure 2 is a cross-sectional plan view of the present invention.

The dust collector A is composed of a rectangular cylinder B, an electrostatic dust collecting plate C, and a rotating friction plate D for generating static electricity.

The cylinder B is provided with the usual filter f (f ') and the blower fan F at the air inlet i side and the outlet u side, and the inside of the cylinder B is blown by the blower fan F. As shown in FIG. The air is ventilated in one direction between the inlets i and the outlets u, and the intermediate space portion partitioned by the two filters f (f ') of the cylinder B is a dust collecting chamber G.

The electrostatic dust collecting plate C is made of a synthetic resin material such as acrylic, and is formed in a sealed case with a plurality of electrostatic electrode plates p, and the dust collecting plate C is connected to the upper body Ca in order to install a friction plate therein. It is divided into a lower body (Cb) is to separate the upper body to the lower body as a cover. A shaft through hole h is formed at an intermediate portion where the upper body Ca and the lower body Cb of the dust collecting plate are coupled to each other so that the rotating shaft of the friction plate can pass therethrough. This dust collecting plate is provided in the intermediate dust collecting chamber G of the said cylinder B by the suitable fixing means t by the parallel space | interval of dense intervals. In practice, the distance between the dust collecting plates is about 10-20 mm. The installation interval of this dust collecting plate is variable. The internal spacing of the dust collecting plate is determined by the thickness of the friction plate. Between the isolated gaps of the dust collecting plate (C) installed in parallel in the dust collecting chamber (G) becomes an air passage (c), and when the air passes through the passage (c), the dust particles (d) of the dust is electrostatic dust collecting plate ( C) is adsorbed on the surface.

The rotating friction plate (D), which generates static electricity by friction with the positive electrode plate, has a diameter of about 300-500 mm, and a surface friction cloth (r) suitable for both sides of the friction plate (D) in the radial direction from the center of the disk is about 300-500 mm in diameter. It is replaceably attached by means of attachment and if worn out during use, it is replaced with a new one. The fiber length of the surface friction cloth r is made into the allowable length which can contact with the inner surface of the dust collecting plate.

A plurality of friction plates (D) are respectively installed inside the dust collecting plate (C), at which time the upper body (Ca) of the dust collecting plate (C) is opened and the friction plate (D) is installed inside the dust collecting plate (C), and then the upper body of the dust collecting plate (C) again. (Da) is coupled to the lower body (Cb) so that the rotary friction plate (D) is sealed in the dust collecting plate (C). The friction plate D installed inside the dust collecting plate C is supported by one rotation shaft s penetrated by the shaft through-hole h formed in the dust collecting plate B, and is driven by the rotation shaft s driven by the motor m. The friction plate D is simultaneously rotated to rub against the positive electrode plate p, which is an inner surface of each dust collecting plate C.

The rotating shaft s supporting the friction plate D is installed horizontally by a supporting means b such as a bearing suitable for the cylinder B, and is driven by a motor m provided with a speed reducer. The actual rotation speed of the friction plate (D) is rotated at a low speed of about 2-5rps and increase or decrease the rotation speed according to the dust collection conditions. The friction plate D is rubbed against both inner surfaces of the dust collecting plate C, that is, the positive electrode plate p. As a result, the positive charges of dust suspended in the air passing through the air passage c of the dust collecting chamber G are charged with negative charge on both surfaces of the dust collecting plate C, which also serves as the positive electrode plate p. ) Fine particles are attached to both surfaces of the dust collecting plate (C) to purify the air.

Although the present invention has been described by what is shown in the drawings, in the practice, the sealing means of the dust collecting plate is not limited to the separating means of the upper body and the lower body, and means for sealing the four peripheral edges of the dust collecting plate may be employed. In addition, the drive mechanism and the transmission mechanism of the friction plate can be varied in design.

SUMMARY OF THE INVENTION The present invention is directed to a dust collecting means for collecting dust by friction static electricity without using a high voltage of direct current for dust collection. Therefore, during dust collection, continuous driving of the friction plate is necessary. In addition, the structurally sealed dust collecting plate is useful for preventing dust from adhering to the internal friction plate and preventing contamination by friction between the positive electrode plate and the friction plate, and increasing the friction area.

In addition, within the scope of the claims of the present invention, those skilled in the art can carry out or change the design extremely easily from the present specification and drawings, which belong to the technical gist of the present invention. Add to

The present invention configured as described above continuously drives the blower F and the friction plate D together. In this case, a quiet blowing is preferable, and the air introduced into the inlet (i) by the blower (F) is discharged through the air passage (c) between the respective dust collecting plates (C) of the dust collecting chamber (G) inside the cylinder (B). u) outflow. During the circulation of the air, several friction plates D driven by the motor m rub against the positive electrode plates p on the inner surface of each dust collecting plate C, so that static electricity is generated, and the friction plates D are charged with positive charge. Negative charge is charged on both surfaces of the dust collecting plate C, which is a denser and positive electrode plate. At this time, the dust in the air is primarily filtered by the filter (f), and the fine particles of the positive charge of the dust during the second passage through the narrow air passage (c) between the dust collecting plate (C) in the dust collecting chamber (G) Is adsorbed on both sides of the dust collecting plate (C) and the purified air from which the dust is separated is discharged to the outside through the filter (f ') of the outlet (u) side.

In the lower side of the cylinder (B), a set-type dust collector (g) is formed. When the driving of the friction plate is stopped and all the static electricity is discharged, the dust attached to the dust collector (C) is placed in the set-type dust collector (g) installed on the lower side. As it is collected dropping, take out the dust container and remove dust easily.

If the surface friction cloth (r) of the friction plate (D) is worn while the dust collector is in use, open the upper body (Ca) of the dust collection plate (C) and replace it with a new one of the surface friction cloth (r) on the friction plate (D) and repeatedly use it. .

In the electrostatic precipitator, the present invention is configured to collect dust using static electricity generated by rotational friction between a positive electrode plate serving as a dust collecting plate and a friction plate, so that the filter is filtered by a wide dust collecting surface of a plurality of parallel collecting dust collecting plates. Difficult to easily adsorb and separate the dust of difficult fine particles can effectively purify the air.

In addition, as it does not use DC high voltage of thousands to tens of thousands of volts like electric dust collector, there is no arc discharge or glow discharge in the corona discharge process for dust collection, so there is no carbonization of dust attached to the dust collector and there is no risk of fire by flame.

In addition, the dust collector can be operated with the minimum power required to drive the friction plate to prevent static electricity, thereby reducing the amount of electric energy.

In addition, since the dust collecting plate is a sealed case, the friction plate installed therein is kept in a sealed state, thereby preventing contamination by adhesion of dust and being free from obstacles to friction.

In addition, since the configuration is simple and easy to handle, there are various effects such as being useful for air purification in homes, offices and public meeting places.

Claims (2)

In the electrostatic precipitator (A) provided with the filter (f) (f ') and the blower (F) between the inlet (i) and the outlet (u) to be ventilated in one direction, the cylinder having the dust collecting chamber (G) ( B), a dust collecting plate (C) made of a sealed case serving as a synthetic resin material such as acrylic disposed in a tightly spaced parallel space in the dust collecting chamber, and having a positive electrode plate (p) whose inner surface is rubbed with a friction plate, and the dust collecting plate (C). It consists of a friction plate (D) rotatably installed inside the rotating shaft (s) by rotating friction with the positive electrode plate (p) to induce static electricity, friction between the friction plate (D) and the positive electrode plate (p) The electrostatic dust collector, characterized in that the charge particulates of the dust are adsorbed and collected on the dust collecting plate C charged by the dust to purify the air. The dust collecting plate (C) of the sealed case is configured to be separately coupled to the upper body (Ca) and the lower body (Cb), and the friction cloth is disposed on both surfaces of the friction plate (D) provided inside the dust collecting plate (C). Friction electrostatic precipitator, characterized in that the replacement (r) is attached.