KR102023903B1 - Flight vehicle for electric dust collector - Google Patents

Abstract

Disclosed is a dust collecting flight vehicle. According to an embodiment of the present invention, the dust collecting flight vehicle comprises: a propulsion and charging part including collectors, which are spaced apart to form space parts, and emitters spaced apart from the space parts and generating charges by means of corona discharge; and a collection part at which particles charged in the propulsion and charging part are collected. The collection part comprises: a first electrode which is a second conductive film covered with a first insulator; and a second electrode which is spaced apart from the first electrode, and is a third conductive film covered with a second insulator, wherein one or more through-holes are formed in the second insulator. The collector and the second electrode are arranged on an imaginary straight line. Accordingly, the dust collecting flight vehicle, which is lightweight, minimizes fluid drag force to float in the air by maximizing propulsion at the time of corona discharge, and collects fine dust and the like through particle charge.

Description

FLIGHT VEHICLE FOR ELECTRIC DUST COLLECTOR}

The present invention relates to an electrostatic precipitating vehicle, and more particularly, to an electrostatic precipitating vehicle that collects fine dust while flying a contaminated space through the particle charge function and the driving force of the corona discharge.

Fine dust in the air is a threat to national health, and the public's perception of fine dust is getting worse over time. Although the government is focusing on reducing fine dust, the amount of fine dust coming from China is estimated to account for 30-50%.

In China, attempts have been made to remove fine dust directly. For example, in 2016, a 7 m high air purifier has been installed in Beijing, China, which purifies 30,000 m3 per hour. In 2018, the world's largest air purifier with a height of 100 m began operation in Xi'an, China, where 15 percent of ultrafine dust in the surrounding area could be reduced.

Meanwhile, the concept of purifying air with hundreds of drones introduced in newspaper articles is not yet implemented. However, although drone group flight technology led by Intel is rapidly developing, there is no development of a vehicle that removes fine dust at home and abroad.

United States Patent 9,555,882 U.S. Patent 5,147,429 Republic of Korea Patent No. 10-1927473

Xu, H. et al. Nature 563, 532-535 (2018). Flight of an aeroplane with solid-state propulsion.

Electrostatic precipitating vehicle according to an embodiment of the present invention, to maximize the propulsive force in addition to the particle charging function of the corona discharge to provide an electrostatic precipitating vehicle to collect the fine dust while flying in the polluted space.

In addition, the electrostatic precipitating vehicle according to an embodiment of the present invention, while minimizing the fluid drag while floating in the air by maximizing the propulsion during the corona discharge, to provide an electrostatic precipitating body to collect the fine dust and the like through the particle charge For the purpose of

The objects of the present invention are not limited to the above-mentioned technical problem, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Electrostatic precipitating vehicle according to an embodiment of the present invention, the propulsion-charge unit including a collector spaced apart from each other to form a space portion, and the emitter spaced apart from the space portion to generate a charge by corona discharge; And a collecting part in which particles charged in the propelling and charging part are collected, wherein the collecting part comprises: a first electrode on which a first insulator is covered by a second conductive film; and spaced apart from the first electrode; A second insulator is covered on the conductive film, and the second insulator includes a second electrode having one or more through holes formed therein, wherein the collector and the second electrode are arranged on a virtual straight line.

Electrostatic precipitating vehicle according to an embodiment of the present invention, the propulsion-charge unit including a collector spaced apart from each other to form a space portion, and the emitter spaced apart from the space portion to generate a charge by corona discharge; And a collecting part in which particles charged in the propelling and charging part are collected, wherein the collecting part comprises: a first electrode on which a first insulator is covered by a second conductive film; and spaced apart from the first electrode; A second insulator is covered on the conductive film, and the second insulator includes a second electrode having one or more through holes formed therein, wherein the emitter and the first electrode are arranged on a virtual straight line.

delete

In the present embodiment, the second conductive film and the third conductive film may be aluminum deposited on a PET film.

In the present embodiment, the first insulator and the second insulator are expanded polystyrene (EPS: expanded polystyrene or Styrofoam), expanded polypropylene (EPP: expanded polyprop), expanded polyolefin (EPO: expanded polyolefin), Woodrock (Woodrock) , Deprone (deprone, closed cell polystyrene) any one of the electrostatic precipitator.

According to embodiments of the present invention has at least the following effects.

According to one embodiment of the present invention, an electrostatic precipitator for collecting fine dust while flying in a contaminated space by maximizing propulsion force in addition to the particle charging function of corona discharge is disclosed.

In addition, the electrode of the collecting portion is lightweight as a structure in which an insulator is covered on the conductive film and the occurrence of spark is minimized.

In addition, the electrode of the collecting portion is a structure in which an insulator is covered on the conductive film, the insulation breakdown voltage is maximized, the electric field strength is maximized, and the collection efficiency is maximized.

In addition, the electrode length decreases in proportion to the increase in the electric field, thereby reducing the weight and minimizing the fluid drag.

Effects according to the embodiments of the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a schematic device diagram of an electrostatic precipitating vehicle according to an embodiment of the present invention;
2 is a schematic explanatory diagram of a propulsion / charge unit of an electrostatic precipitating vehicle according to an embodiment of the present invention;
Figure 3 is an enlarged view of the main portion of the collector of the electrostatic precipitator according to an embodiment of the present invention
Figure 4 is a longitudinal cross-sectional view of the collector of the electrostatic precipitating vehicle according to an embodiment of the present invention
Figure 5 is an enlarged view of the connection of the collector of the electrostatic precipitator flying vehicle according to an embodiment of the present invention
Figure 6 is an explanatory view of the propulsion force generation principle of the electrostatic precipitating vehicle according to an embodiment of the present invention
7 is a graph for measuring the propulsion force of the electrostatic precipitator according to an embodiment of the present invention
8 is a diagram illustrating the trajectory of particles entering the collecting unit of the electrostatic precipitating vehicle according to an embodiment of the present invention.
9 is a view of a first electrode of the electrostatic precipitating vehicle according to an embodiment of the present invention;
10 is a view of a second electrode of the electrostatic precipitating vehicle according to an embodiment of the present invention;
11 and 12 are arrangement relationship diagrams of the collector and the collecting portion of the electrostatic precipitating vehicle according to an embodiment of the present invention

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. Effects and features of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms and should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Prior to the description, the terms described in the detailed description will be described. In the following embodiments, the terms first, second, etc. are used for the purpose of distinguishing one component from other components rather than a restrictive meaning. Therefore, the first component mentioned below may be a second component within the technical idea of the present invention. Also, the singular forms “a”, “an” and “the” include plural forms unless the context clearly indicates otherwise. Also, the terms 'comprise' or 'have', etc., mean that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features or components. Does not preclude the possibility of being added.

In addition, in the drawings, components may be exaggerated or reduced in size for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and thus the present invention is not necessarily limited to the illustrated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components are designated by the same reference numerals and redundant description thereof will be omitted.

1 is a schematic device diagram of an electrostatic precipitating vehicle according to an embodiment of the present invention.

Electrostatic precipitating vehicle 1000 according to an embodiment of the present invention, while minimizing the fluid drag while floating in the air by maximizing the propulsion force during the corona discharge, to collect fine dust and the like through the particle charge, see FIG. The lower surface includes a propulsion / charge part 100 and a collecting part 200.

2 is a schematic explanatory view of the propulsion and charge of the electrostatic precipitating vehicle according to an embodiment of the present invention, Figure 3 is an enlarged view of the main portion of the collector of the electrostatic precipitating vehicle according to an embodiment of the present invention, Figure 4 is a longitudinal cross-sectional view of the collector of the electrostatic precipitating vehicle according to an embodiment of the present invention, Figure 5 is an enlarged view of the connection of the collector of the electrostatic precipitating vehicle according to an embodiment of the present invention.

The propulsion / charge unit 100 generates ion wind and propulsion force through ions generated through corona discharge, floats in air together with the collecting unit 200 to be described later, and charges dust passing therethrough. The propulsion / charge part 100 includes an emitter 110 and a collector 120.

In this embodiment, the emitter 110 may be formed of a thin wire. Alternatively, in another embodiment, the thin metal plate may be processed into a sawtooth shape. A high voltage is applied between the emitter 110 and the collector 120. When the emitter 110 voltage is high based on the collector 120, it is positively discharged (+ discharge) and negative when the emitter 110 voltage is low. Discharge (-discharge). When the emitter 110 is a wire, the driving force or ion wind generation performance is superior to the sound discharge when the positive discharge, and when the emitter 110 is a saw tooth shape, the performance of the sound discharge is superior to the positive discharge. In this embodiment, the emitter 110 is a wire and a positive discharge. In this embodiment, a high voltage of 12 KV is applied to generate ions through corona discharge. At this time, the application of the high voltage may be supplied through a battery (not shown).

In the present embodiment, a plurality of collectors 120 are spaced apart from each other to form a space A. That is, the space A refers to a space formed by connecting each end of the collectors 120 formed in a substantially plate shape to each other, and is a space through which ion wind and charged particles pass.

The distance between the collectors 120 is preferably a distance at which fluid drag is minimized. In general, the fluid drag decreases as the distance between the collectors 120 increases, and is determined at an appropriate interval according to the device design. If the interval between the collector 120 is determined, the smaller the thickness of the collector 120, the smaller the fluid drag.

The emitter 110 is spaced apart from the space A. Due to the arrangement of the emitter 110 and the collector 120, a propulsion force is generated in the propulsion / charge part 100 as described later, and the propulsion / charge part 100 and the collecting part 200 are airborne by this propulsion force. Will float on.

One of the main conditions for floating the electrostatic precipitating body 1000 according to the present embodiment is the weight reduction of the device. When the propulsion / charge part 100 is laminated in parallel, the cross-sectional area of the propulsion / charge part 100 increases in proportion to the number of stacked layers, and thus the air purification amount increases, but the weight and fluid drag of the propulsion / charge part 100 also increase. do. In this case, weight reduction is important because battery energy, ie, battery weight, is also increased to support the propulsion / charge unit 100 and the collecting unit 200 in the air in proportion to the weight of the propulsion / charge unit 100.

In the present embodiment, the collector 120 has a structure in which the first conductive film 122 is covered with a light foam 121. Specifically, in the present embodiment, the foam 121 is expanded polystyrene (EPS: expanded polystyrene or styrofoam), expanded polypropylene (EPP: expanded polyprop), expanded polyolefin (EPO: expanded polyolefin), Woodrock (Deprone) , closed cell polystyrene). The first conductive film 122 may be formed by depositing aluminum on a PET film. Although weight reduction of the collector 120 is important, it is difficult to form a structure only with the thin first conductive film 122. Therefore, in the present embodiment, by forming a PET film having aluminum deposited on a low-density foam 121 such as wood lock, it is very light and easy to form a structure, and functions as an electrode through which current flows through aluminum. In addition, since the electrode is thin, the fluid drag is also minimized.

Furthermore, one or more first through holes 121a may be formed in the foam 121. By forming the first through hole 121a in the foam 121, the light becomes even lighter, and the entire surface on which the first through hole 121a of the foam 121 is formed is covered by the first conductive film 122, thereby serving as an electrode. There is no problem to perform. In this embodiment, the first through hole 121a may be formed by Thompson processing.

In addition, the collector 120 is covered with the first conductive film 122 on the foam 121, the first conductive film 122 forms a round (122a) from one end of the foam 121. Here, the round 122a means a protruding shape located at one end of the foam 121. More preferably, the round 122a means a semicircle having a radius R in cross section.

When the round 122a is formed in the collector 120, the reverse discharge phenomenon may be minimized, and dust collecting and driving force may be maximized. In addition, since the round 122a is formed, spark generation may be minimized. Here, the reverse discharge phenomenon refers to a phenomenon in which anions travel toward the emitter 110 in the collector 120 as the voltage increases. If an electric field of a predetermined size or more is generated, reverse discharge may occur. The strength of the electric field on the surface of the round 122a is inversely proportional to R, so it is desirable to maximize R as much as possible so that this voltage is not possible.

On the other hand, the plurality of collectors 120 are electrically connected to each other by the connecting portion 123. In the present embodiment, the connection part 123 may be provided by a thin stainless plate, and a plurality of grooves are formed to be spaced apart so that the collector 120 is inserted into each of the grooves to be electrically connected to each other.

6 is an explanatory view of the propulsion force generation principle of the electrostatic precipitating vehicle according to an embodiment of the present invention, Figure 7 is a propulsion measurement graph of the electrostatic precipitating vehicle according to an embodiment of the present invention. Referring to Figure 6 will be described the principle that the driving force and the ion wind generated by the propulsion-charge unit having the above structure.

When a high voltage is supplied to the emitter 110, a high intensity electric field is formed near the surface of the emitter 110. When the intensity of the electric field exceeds a specific value, positive and negative ions coexist around the emitter 110. The plasma region is formed. In this region, electrons accelerate at high speed and collide with air molecules, causing ionization to separate air molecules into cations and electrons. This process is also called electro avalanche because it generates a large amount of electrons and cations in an instant.

(

:전하밀도,

:전기장의 강도)을 받기 때문인데, 이러한 힘의 작용은 이온이 중성분자와 충돌할 때 발생하는 반작용과 힘의 평형을 이룬다. 이 반작용이 바로 비행체를 앞으로 나아가게 하는 추진력이며 이온과의 충돌로 인하여 이온이 이동하는 방향으로 움직이는 중성 공기분자의 전체적인 이동이 바로 이온풍이다. 현재까지 연구된 결과에 따르면 추진력

는

(

: 전류,

: 에미터와 콜렉터와 이격거리,

: 이온이동도)관계를 따르고 이온풍의 속도는 전류의 제곱근에 비례한다.On the other hand, when the difference between the applied high voltage reaches a voltage called a corona discharge start voltage, a corona discharge phenomenon in which positive ions move to the collector 120 along an electric force line in the plasma region around the emitter 110 occurs. This movement of cations is caused by the ion coulomb'force in the space between the emitter 110 and the collector 120.

(

Charge density,

This force acts as a counterbalance to the forces that occur when ions collide with heavy atoms. This reaction is the driving force for moving the aircraft forward, and the overall movement of the neutral air molecules moving in the direction of movement of ions due to collision with ions is the ion wind. According to the research so far, the driving force

Is

(

: Current,

= Distance between emitter and collector,

Ionic mobility) and the velocity of the ion wind is proportional to the square root of the current.

In order to effectively apply the propulsion force to the aircraft, the inventors measured how the propulsion force in the above-described space is in equilibrium with the force generated in the emitter 110 and the collector 120. Interestingly, a large force was measured in the direction of propulsion force in the collector 120 and a relatively small force was generated in the direction of canceling the propulsion force in the emitter 110. The graph of FIG. 7 shows the measurement result. Combining these two forces gives a result that is exactly in line with the theoretical propulsion of the direction of flight mentioned above. The reason for the measurement result is that attractive force is generated between the cation generated by the corona discharge and the negative charge induced on the surface of the collector 120, and the repulsive force is generated from the positive charge induced on the surface of the emitter 110.

This propulsion force causes the device to float in the air when the emitter 110 is located above the collector 120.

As described above, when the applied voltage is increased, when the surface electric field in the round portion 122a of the collector 120 is greater than or equal to a predetermined size, a reverse discharge phenomenon in which negative ions generated from the surface of the collector 120 travels toward the emitter 110 is performed. This happens. The reverse driving phenomenon of this ion generates ion wind in the opposite direction, thus weakening the driving force. Minimization of the reverse discharge phenomenon is possible by increasing the round 122a of the collector 120 as described above. The driving force is maximized by the lightweight structure of the collector 120 described above.

On the other hand, the cation moving from the emitter 110 to the collector 120 collides with and adheres to particles (fine dust, air pollutants) in the air, thereby charging the particles to positive charge.

In addition, when the air moves toward the collector 120 at the exit side due to the collision of ions and heavy components in the space, negative pressure is formed in the space, so that external air is introduced again from the emitter 110 at the inlet side and a constant flow rate is generated. do.

In the present embodiment, the collecting unit 200 is floated in the air together with the propelling and charging unit 100, and is configured to collect the charged particles in the propelling and charging unit 100. The collecting part 200 includes a first electrode 210 and a second electrode 220.

(여기서, F_d: 유체항력, A_f: 날개표면적, C_d: 항력계수 ρ:공기밀도 U:비행속도)를 유동손실율 관계식

에 대입하면,

을 얻을 수 있다. 이 식은 속도의 세제곱에 따라 급증하는 에너지손실율의 저감을 위해서는 A_f 와 C_d 의 감소를 통한 유체항력의 극소화가 중요함을 의미한다.One of the main conditions for maximizing the propulsion force of the electrostatic precipitator 1000 according to the present embodiment and increasing the air purification amount is minimization of the fluid drag. Even if the cross-sectional area and weight of the propulsion / charge part 100 are constant, the air purification amount increases proportionally if the flight speed is increased. However, the drag relationship of the aircraft

Where F _d : fluid drag, A _f : wing surface area, C _d : drag coefficient ρ: air density U: flying velocity

If you substitute in,

Can be obtained. This equation implies that minimizing fluid drag through the reduction of A _f and C _d is important for reducing the rate of energy loss that increases rapidly with the cube of velocity.

In this embodiment, the propulsion / charge part 100 and the collecting part 200 float together in the air, and this driving force is generated only between the emitter 110 and the collector 120. However, the fluid drag is generated when the flow from the propulsion / charge part 100 flows into the collecting part 200. Specifically, this fluid drag is generated in the emitter 110 and the collector 120 of the propulsion / charge part 100, the first electrode 210 and the second electrode 220 of the collecting part 200. If the drag coefficient C _d is constant in the above relation of fluid drag F _d, the fluid drag increases mainly in proportion to the cross-sectional area A _f that blocks the ion wind.

The spacing between the emitter 110 and the collector 120 is twice the spacing between the first electrode 210 and the second electrode 220, and the collector 120, the first electrode 210, and the second electrode ( If the thickness of the 220 is the same, the fluid drag of the collector 120 is 50% of the fluid drag of the collecting unit 200, and since the emitter 110 has a relatively thin thickness, the fluid drag of the collecting unit 200 is smaller than the fluid drag of the collecting unit 200. Very small In this embodiment, the spacing between the emitter 110 and the collector 120 is twice the spacing between the first electrode 210 and the second electrode 220 and the thickness of the collector 120 is the first electrode 210. And 1/2 of the second electrode 220, the fluid drag of the collector 120 is 25% of the fluid drag of the collecting unit 200. That is, the fluid drag of the collecting part 200 occupies an absolute ratio.

Considering the balance of the overall force, the net propulsion force is obtained by subtracting the fluid drag of the propulsion / charge unit 100 and the collecting unit 200 from the propulsion force generated by the propulsion / charge unit 100. Therefore, the structure and arrangement of the collecting part 200 should be designed to maximize this driving force.

)으로부터 전극의 길이는

(

:전극간 거리,

:유동속도,

: 입자의 횡단속도)로 나타낼 수 있다. 그런데 입자이론에 따르면

(

: 입자에 부착된 이온의 수, 전기장

,

: 인가전압)의 관계가 있으므로

관계가 얻어진다. 그러므로 하전수

과 전기장

를 증가시키면 입자포집을 위한 전극길이

이 감소되므로 포집부(200) 경량화 및 유체항력 저감이 가능해진다. 8 is a diagram illustrating the trajectory of particles entering the collecting unit of the electrostatic precipitating vehicle according to the exemplary embodiment of the present invention. The trajectory of the particles entering the collecting unit 200 is as shown in FIG. 8. Geometric conditions of two right triangles

From the electrode length

(

: Distance between electrodes,

Flow velocity

: Transversal velocity of particles). But according to particle theory

(

= Number of ions attached to the particle, electric field

,

: There is a relationship between applied voltage)

Relationship is obtained. Therefore charge

And electric field

Increasing the electrode length for particle capture

Since it is reduced, the collection unit 200 can be made lighter in weight and reduced in fluid drag.

를 극대화하는 것이 하전수 증가 보다는 용이하다. 그러나 전기장의 극대화는 필연적으로 누설전류를 증가시키고, 결국 전극사이의 절연파괴가 발생할 수 있다.However, in order to increase the number of charges in the propulsion-charge part 100, an increase in corona discharge power is required, so a careful approach is required. On the other hand, since the power consumption is very small in the collecting unit 200, the electric field

Maximizing is easier than increasing the number of charges. However, maximization of the electric field inevitably increases the leakage current, which may result in breakdown between the electrodes.

As a result, the weight reduction of the device and the reduction of the fluid drag in the present embodiment are the main conditions, and the collecting part 200 satisfies these conditions.

9 is a view of the first electrode of the electrostatic precipitating vehicle according to an embodiment of the present invention, Figure 10 is a view of the second electrode of the electrostatic precipitating vehicle according to an embodiment of the present invention.

In this embodiment, the collecting unit 200 includes a first electrode 210 to which a high voltage is applied, and a second electrode 220 to which a voltage which is relatively lower than that of the first electrode 210 is applied. Due to the difference in voltage applied, the first electrode 210 becomes the anode and the second electrode 220 becomes the cathode, and an electric field is formed between the two electrodes. The second electrode 220 is collected.

As described above, one of the main conditions for the electrostatic precipitating body 1000 to float is the weight reduction of the device. Therefore, in the present embodiment, the first electrode 210 and the second electrode 220 have a lighter structure so that they can float by the driving force generated in the propulsion / charge part 100.

In detail, the first electrode 210 has a structure in which the first insulator 212 is covered with the second conductive film 211. The first insulator 212 includes expanded polystyrene (EPS: expanded polystyrene), expanded polypropylene (EPP: expanded polyprop), expanded polyolefin (EPO: expanded polyolefin), Woodrock, Deprone, closed cell polystyrene May be). In addition, the second conductive film 211 may be aluminum deposited on a PET film. Although the function of the electrode is performed only by the second conductive film 211, it is very thin and difficult to form the structure of the collecting part 200. However, since the second insulator film 211 is covered with the first insulator 212 such as wood lock, it is possible to form the electrode by the second conductive film 211 while being very light, and using the strength of the wood lock, a strong assembly structure. Can be formed.

In addition, since the first insulator 212 is covered on the second conductive film 211, sparks that may occur in the second conductive film 211 may be prevented, thereby increasing the breakdown voltage. When a voltage is applied to the second conductive film 211, a spark may be generated at a low voltage. As the intensity of the electric field is increased by increasing the voltage, the collection efficiency of the fine dust is increased, and there is a problem in that spark is generated when a voltage is applied. Particularly, at the end of the metal, leakage current may be generated even at an insulation breakdown voltage or less, thereby increasing energy consumption. In this embodiment, the wood lock is wrapped in the second conductive film 211 so that the spark at the second conductive film 211, in particular at the end, It is prevented and the dielectric breakdown voltage is maximized, so the dust collecting efficiency is excellent. In addition, the strength of the electric field is maximized by maximizing the dielectric breakdown voltage, and the electrode length decreases in proportion to the increase of the electric field, making it lighter and minimizing the fluid drag. In this case, the size of the first insulator 212 may be larger than that of the second conductive film 211, and thus sparks may be more surely prevented. As the size of the first insulator 212 is larger than that of the second conductive film 211, the distance between each end portion is increased. This is because the spark generation voltage increases because the spark discharge distance between the first electrode 210 and the second electrode 220 of the collecting unit 200 increases as the distance increases.

The second electrode 220 also has a structure in which the second insulator 222 is covered on the third conductive film 221 like the first electrode 210. The second insulator 222 is expanded polystyrene (EPS: expanded polystyrene), expanded polypropylene (EPP: expanded polyprop), expanded polyolefin (EPO: expanded polyolefin), Woodrock (Deprone, closed cell polystyrene). May be). The third conductive film 221 may also be aluminum deposited on the PET film. That is, the second electrode 220 has the same weight structure as the first electrode 210.

The difference between the second electrode 220 and the first electrode 210 is that the particles are collected in the second electrode 220 by the voltage difference applied to both electrodes, there is a difference in the collection structure. One or more second through holes 222a are formed in the second insulator 222. The second through hole 222a may be formed by thomson processing. Even though the second through hole 222a is formed to cover the third conductive film 221 with the second insulator 222, the third conductive film 221 is exposed to the outside by the second through hole 222a. The third conductive film 221 is a cathode by an applied voltage, and particles charged with cations in the propulsion / charge unit 100 are collected in the third conductive film 221. In the case of negative discharge, unlike in the present embodiment, the polarities of the electrodes are reversed.

11 and 12 are arrangement relationship diagrams of the collector and the collector of the electrostatic precipitating vehicle according to an embodiment of the present invention.

As another method for minimizing fluid drag, in the present embodiment, the second electrode 220 of the collecting unit 200 is arranged on a virtual straight line with the collector 120, and the first electrode 210 is an emitter. 110 is arranged on a virtual straight line. That is, the collector 120 and the second electrode 220 are aligned in a straight line. Specifically, the collector 120 and the second electrode 220 are aligned along a virtual straight line that is the same as the longitudinal direction of the collector 120. In addition, the emitter 110 and the first electrode 210 are aligned in a straight line, specifically, aligned along an imaginary straight line parallel to the longitudinal direction of the collector 120.

The arrangement of the second electrode 220 and the collector 120 is one of structures that minimize the fluid drag. The fluid drag at the electrode can be divided into positive pressure component and viscous component. The inventors confirmed that the static pressure component is much larger than the viscous component. Since the static pressure component becomes smaller in proportion to the thickness of the electrode and the viscosity component becomes smaller in proportion to the surface area of the electrode, it is important to reduce the thickness of the electrode in order to reduce the fluid drag. In this embodiment, the fluid drag is reduced through the lightweight structure of the first electrode 210 and the second electrode 220. In addition, the linear arrangement of the first electrode 210 and the collector 120 described above has a large effect of reducing the positive pressure of the electrode.

라고 하면, 콜렉터(120) 후미에서의 유동속도

는

보다 작다. 그리고 유체항력은 상술한

를 따른다. 도면과 같이 콜렉터(120)와 포집전극을 정렬시키면 제2전극(220)에 유입되는 속도

가

보다 작으므로 포집전극의 유체항력은 작아진다. 이 경우 에미터(110)의 직경은 상대적으로 매우 작으므로 제1전극(210)에 유입되는 유동속도

에 대한 영향은 미미하다. 도 11의(b)와 같이 콜렉터(120)와 에미터(110)가 정렬되어 있지 않으면 포집부(200)와 비포집부(200)에 유입되는 속도가 유동속도

와 동일하므로 유체항력 감소효과가 없다.Specifically, referring to Figure 11 (a), the flow rate flowing into the propulsion / charging unit

Speaking, the flow velocity at the rear of the collector 120

Is

Is less than And the fluid drag is

Follow. As shown in the drawing, when the collector 120 and the collecting electrode are aligned, the velocity flowing into the second electrode 220 is achieved.

end

Since it is smaller, the fluid drag of the collecting electrode becomes smaller. In this case, since the diameter of the emitter 110 is relatively small, the flow velocity flowing into the first electrode 210 is relatively small.

The impact on is minimal. If the collector 120 and the emitter 110 are not aligned as shown in FIG. 11B, the velocity flowing into the collector 200 and the non-collector 200 is a flow rate.

Since it is the same as, there is no fluid drag reduction effect.

The dashed arrow on the left in FIG. 12 shows the trajectory where cations move from the emitter 110 to the collector 120. However, the ion density of the emitter 110 side a is much higher than the collector 120 side b. According to the charge transfer theory, the ion density is inversely proportional to the elapsed time after the emitter 110 starts.

관계를 적용하면, p₁의 하전수 n₁이 p₂의 하전수 n₂보다 커지게 되므로, 포집부(200)에 입사된 후 p₁의 횡단속도 v_p1이 p₂의 횡단속도 v_p2보다 커진다. 그러므로, 포집부(200)의 제2전극(220)은 콜렉터(120)와 직선 상에 배열되며 제1전극(210)은 에미터(110)와 직선 상에 배열되는 것이 포집효율이 보다 우수하다.Dust particles p ₁ incident along the streamline of the flow pass a and dust particles p ₂ pass b. p ₁ and p ₂ are the same particle. According to the charge theory, the higher the ion density, the more the charge number n of the particles increases. The above-mentioned traverse speed

Applying the relationship, it is to transfer n ₁ of p ₁ therefore becomes greater than to transfer n ₂ of p _2, and then incident on the collecting section 200 traverse speed v traverse speed of _p1 is p ₂ of p ₁ v _p2 than Gets bigger Therefore, the second electrode 220 of the collecting unit 200 is arranged in a straight line with the collector 120, and the first electrode 210 is arranged in a straight line with the emitter 110. .

Therefore, in the present embodiment, the second electrode 220 of the collecting unit 200 is arranged on a virtual straight line with the collector 120, and the first electrode 210 is arranged on a virtual straight line with the emitter 110. This reduces fluid resistance and provides excellent collection efficiency.

In summary, according to the present exemplary embodiment, the collector 120, the first electrode 210, and the second electrode 220 have a light weight structure, the round structure 122a of the collector 120, and the insulating structure of the collecting part 200, and The linear arrangement has the effect of maximizing propulsion.

Accordingly, the present embodiment provides an electrostatic precipitator which minimizes fluid drag and floats in the air by maximizing propulsion during corona discharge, and collects fine dust through particle charging.

The use of all examples or exemplary terms (eg, etc.) in the present invention is merely for describing the present invention in detail, and the scope of the present invention is limited by the examples or exemplary terms unless the scope of the claims is defined. It is not limited. Also, one of ordinary skill in the art appreciates that various modifications, combinations and changes can be made in accordance with design conditions and factors within the scope of the appended claims or their equivalents.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and all the scope equivalent to or equivalent to the scope of the claims, as well as the claims to be described later, are defined by the spirit of the invention. It belongs to the category.

1000: Electrostatic Precipitator
100: propulsion charge part 110: emitter
120: collector 200: collector
210: first electrode 220: second electrode

Claims (5)

A propelling / charging portion including a collector spaced apart from each other and an emitter spaced apart from the space portion and generating an electric charge by a corona discharge; And
Includes; collecting portion for collecting the charged particles in the propelling, charging portion,
The collecting unit,
A first electrode covered with a first insulator on a second conductive film; and a second electrode spaced apart from the first electrode and covered with a second insulator on a third conductive film, wherein at least one through hole is formed in the second insulator. Including;
The collector and the second electrode are arranged on an imaginary straight line
Electrostatic precipitating vehicle. A propelling / charging portion including a collector spaced apart from each other and an emitter spaced apart from the space portion and generating an electric charge by a corona discharge; And
Includes; collecting portion for collecting the charged particles in the propelling, charging portion,
The collecting unit,
A first electrode covered with a first insulator on a second conductive film; and a second electrode spaced apart from the first electrode and covered with a second insulator on a third conductive film, wherein at least one through hole is formed in the second insulator. Including;
The emitter and the first electrode are arranged on an imaginary straight line
Electrostatic precipitating vehicle. delete The method of claim 1,
The second conductive film and the third conductive film is an electrostatic precipitator flying aluminum deposited on the PET film. The method of claim 1,
The first insulator and the second insulator are expanded polystyrene (EPS: expanded polystyrene), expanded polypropylene (EPP: expanded polyprop), expanded polyolefin (EPO: expanded polyolefin), Woodrock, Deprone, Electrostatic precipitating vehicle, which is one of closed cell polystyrene).

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