KR101310652B1 - nano-particle generation apparatus and method for size selective particle with spark discharger and electric charger - Google Patents

Abstract

A nanoparticle generator using a spark discharge device and a charge device is disclosed. Nanoparticle generating apparatus using a spark discharge device and a charging device according to an embodiment of the present invention, the discharge unit for evaporating, granulating the surface of the electrode composed of the first metal by the spark discharge; And a charging unit configured to charge the first metal particles discharged from the discharge unit with the same charge or different charges.

Description

Nano-particle generation apparatus and method for size selective particle with spark discharger and electric charger}

The present invention relates to a device for producing nanoparticles using a spark discharge device and a charge device and a method for controlling the particle size thereof.

Recently, due to the rapid development of electronics, telecommunications, and biotechnology, the global interest in nanotechnology is increasing. Especially, in the nano-micronized nano powders, unusual new properties that are not expressed in general powders are observed. Applications are expected in a variety of industries, such as fields, high-strength machine parts, catalysts, medicine, and biotechnology.

In general, the smaller the particle size, the larger the surface area occupies through the expansion of its surface area. From the thermodynamic point of view, since the atoms constituting the surface have higher energy than those located inside the nanoparticles, The quantum size effect is called having a higher energy per unit atom than bulk materials.

In general, nanoparticles are extremely fine particles having a size of about 1 to 100 nm, and have a unique physical property such as improved strength or melting point or high activity when used as a catalyst through the surface area of particles that increase exponentially as they are fine. Or has chemical properties.

In general, the nanoparticle generating apparatus generates nanoparticles by generating nanoparticles of materials having known sterilization / antibacterial properties such as silver (Ag) and platinum (Pt), or materials of known carbon adsorption properties such as titanium dioxide. It is used to remove harmful gases such as sterilization / antibacterial, VOC, and ozone, odors and odors.

Conventional nanoparticle generating apparatus generates nanoparticles of a desired size by generating particles by spark discharge and adjusting the collision, aggregation time, and spatial conditions between particles, but the size of the nanoparticles corresponds to a particle size of one particle As a result, there is a limitation that it cannot be finally formed or enlarged to a size difficult to be formed by an arbitrary collision, and there is a problem that it is difficult to guarantee reliability even in uniformity of particle size.

The present invention devised to solve the problems described above, while reducing the size of the nanoparticles to a fine size corresponding to one particle, or can be expanded to a size that is difficult to form by any collision between particles, An object of the present invention is to provide a nanoparticle generator and a particle size control method using a spark discharge device and a charge device that can ensure reliability even in the uniformity of size.

The present invention for achieving the object as described above, the discharge unit 10 for evaporating and granulating the surface of the electrode 11 made of the first metal by the spark discharge; Spark discharging device and a nanoparticle generating device using a charging device comprising a; and a charging unit 30 for charging the first metal particles discharged from the discharge unit 10 with the same charge or different charges do.

Here, the charged part 30 charges the first metal particles discharged from the discharge part 10 with the same kind of electric charge so that aggregation between the first metal particles is inhibited by the repulsive force between the first metal particles. You can.

In addition, the discharge unit 10 applies a high voltage between the pair of electrodes 11, but applies a positive voltage (or negative voltage) to the electrode 11 made of the first metal, and the charged portion (30) may further charge a positive charge (or negative charge) to the first metal having a positive charge (or negative charge).

In addition, the charging unit 30 may include a particle charging device (not shown) that charges suspended particles in the air, such as an ionizer and a corona discharger.

In addition, the discharge unit 10 includes: a first discharge unit 110 for evaporating and granulating the surface of the positive electrode formed of the first metal by spark discharge; And a second discharge part 210 for evaporating and granulating the surface of the negative electrode formed of the first metal by spark discharge.

In addition, the charging unit 30, the first charging unit 130 for additionally charging the first metal particles discharged from the first discharge unit 110 with a positive charge; And a second charge unit 230 that additionally charges the first metal particles discharged from the second discharge unit 210 into negative charges.

In addition, the charge intensity of the first charge unit 130 and the second charge unit 230 may be adjusted by adjusting the interval between the first discharge unit and the electrodes 111 and 211 of the second discharge unit.

In addition, the first and second charged portion (130, 230) the first metal particles in the mixing chamber 311 in the mixing chamber 311 by agglomeration between the positive charge, the negative charge; Can be.

In addition, the alloy particles generated in the mixing chamber 311, the heat agglomeration unit 330 for generating a larger alloy particles by agglomeration with each other in a high-temperature atmosphere in the heating furnace 331; may further include a.

In addition, the sample collection unit 410 is installed on the flow path of the particles passing through the charged portion 30, the particle mixing unit 310 or the heating agglomeration unit 330, and finally collect the alloy particles produced by agglomeration. It may further include;

In addition, the charged portion 30 or the first charged portion 130, the second charged portion 230, is installed on the flow path of the particles passed through the particle mixing unit 310, the first charged portion 130 ), The second charging unit 230, the particle measuring unit 430 for optically measuring the particles generated by the particle mixing unit 310; may further include.

In addition, the charged portion 30 or the first charged portion 130, is installed on the flow path of the particles passing through the second charged portion 230, the first charged portion 130, the second charged portion ( Charge number measuring unit 450 for measuring the number of charges of the particles generated in 230 may be further included.

In addition, when the charge number measured by the charge water measuring unit 450 exceeds or falls below a set range, the first discharge unit 130, or the second charge unit 230, the first discharge unit 110, Charge control unit for outputting a control command for controlling the charge intensity of the second discharge unit 210 is separated from or close to the electrode 111, the first charge unit 130, or the second charge unit 230 itself. It may further include;

In addition, the present invention, the metal particle step (S1) for evaporating and granulating the first metal by spark discharge; A particle charging step of charging the particles of the first metal with the same charge or different charges (S2); And a particle size adjusting step (S3) of allowing the particles of the first metal to be spaced apart from each other by repulsive force between the same charges or mutually coagulating by attraction between different charges. The control method is another technical point.

According to the present invention having the above-described configuration, by using a particle charging device, particles composed of one metal component are separated from each other by repulsive force to reduce the size of the nanoparticles to a fine size corresponding to one particle, or by attractive force. By clearly inducing coagulation between each other, it can be expanded to a size that is difficult to form by any collision between particles.

Accordingly, the range of the particle size that can be produced can be further expanded compared to the conventional one, and the nanoparticles having a desired particle size can be reliably produced by adjusting or maintaining the type of charge, charge rate, and the like.

In the production of nanoparticles of a fine size corresponding to one particle, the first metal particles are continuously charged with positive or negative charges, thereby preventing the aggregation of each other by electrostatic repulsive force, thereby yielding nanoparticles of the first metals. Can be significantly improved.

In addition, in producing large-sized nanoparticles that are difficult to form by arbitrary collisions between particles, they quickly and clearly aggregate with each other by electrostatic attraction between the first metal charged with a positive charge and the first metal charged with a negative charge. By doing so, the yield of nanoparticles produced by the first metal can be significantly improved.

Further, in addition to adjusting the voltage applied to the electrodes of the first and second discharge parts and the flow rate of the supply gas, the positive and negative charge rates, the negative charge charge rate, and the first charge rate of the first metal are adjusted by adjusting the strength and position of the first and second charge parts. It is possible to continuously and precisely control the aggregation rate between one metal, whereby the optimum conditions for alloy formation can also be easily detected.

In addition, in the case of using two spark discharge devices and a charging device, the production of alloy particles can be significantly increased by more than two times compared to using only a spark discharge device. By using only one mixing chamber, two existing metal particle production devices are used. Compared to this, the same amount of productivity can be achieved with less volume, cost and energy consumption.

1-conceptual diagram showing a nanoparticle generating device using a spark discharge device and a charging device according to a first embodiment of the present invention
2 is a conceptual diagram showing a first embodiment of the discharge unit;
3-A conceptual diagram showing a nanoparticle generating device using a spark discharge device and a charging device according to a second embodiment of the present invention
4 is a conceptual diagram illustrating a nanoparticle generator using a spark discharge device and a charge device according to a third embodiment of the present invention.
5 is a flowchart illustrating a particle size control method using a spark discharge device and a charge device according to a first embodiment of the present invention;
6 is a conceptual diagram visually showing an example of a particle size control method using a spark discharge device and a charge device according to a first embodiment of the present invention;
7 is a conceptual diagram visually showing another example of a particle size control method using a spark discharge device and a charge device according to a second embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a nanoparticle generator using a spark discharge device and a charge device according to a first embodiment of the present invention.

Referring to FIG. 1, the nanoparticle generator using the spark discharge device and the charge device according to the first embodiment has a configuration including a discharge unit 10 and a charge unit 30.

2 is a conceptual diagram illustrating a first embodiment of the discharge unit 10.

1 and 2, the discharge unit 10 includes a pair of electrodes 11 arranged at a predetermined interval, and includes a gas supply device (for example, a carrier air supply system). ) And an inert gas or nitrogen are injected into the space provided with the electrode 11 by a flow meter (for example, a mass flow meter (MFM)).

The discharge unit 10 uses the electrode 11 made of a first metal (for example, Ni, Ag, Pt, etc.) and applies a high voltage to the electrode 11 to generate the first by spark discharge. The metal is evaporated (vaporized) and granulated.

In the electrode gap, which is the shortest distance between the electrodes 11, the smaller the distance is, the lower the ignition gate voltage is, and the larger the distance is, the higher the voltage is required. Narrow electrode gaps reduce the voltage required to generate an arc, but short sparks can deliver ignition minimum energy to the mixer and cause misfire, so it is necessary to set the appropriate distance by experiment.

The charging unit 30 is provided with a particle charging device that charges suspended particles in air, such as an ionizer and a corona discharger, and flows the particles passing through the discharge unit 10. Installed on the path.

The charged part 30 charges the particles of the first metal discharged from the discharge part 10 to positive or negative charges, thereby inhibiting aggregation between the first metal particles by the repulsive force between the first metal particles. Be sure to

In generating particles by spark discharge, the particles can be granulated in a positively charged or negatively charged state depending on the characteristics of the voltage applied to the electrode 11.

When a high voltage is applied between the pair of electrodes 11 and a positive voltage (or negative voltage) is applied to the electrode 11 formed of the first metal, the first metal particles are generated as positive charges (or negative charges). In addition, by additionally charging the first metal particles from the charged portion 30 to a positive charge (or negative charge), the charge rate of the first metal particles may be further increased.

As described above, the first metal particles are charged with the same kind of electric charge in multiple stages over the discharge part 10 and the charge part 30, so that the discharge part 10 and the charge part 30 are used. The charge strength of the first metal particles can be increased to the maximum, and the aggregation between the first metals can be more clearly prevented.

In addition, as the charged portion 30 is adjacent to the electrode 11 of the discharge portion, the first metal particles generated in the discharge portion 10 may be further charged before being neutralized, and the charged water may be further increased. Thereby, the charge intensity can be adjusted by adjusting the interval between the discharge part 10 and the charge part 30.

3 is a conceptual diagram illustrating a nanoparticle generator using a spark discharge device and a charge device according to a second embodiment of the present invention.

Referring to FIG. 3, the nanoparticle generating device using the spark discharge device and the charge device according to the second embodiment of the present invention, the spark discharge device and the charge device according to the first embodiment of the present invention shown in FIG. Compared with the nanoparticle generating device using, the sample taking unit 410, the particle measuring unit 430, the charge number measuring unit 450, has a structure further provided with a charge control unit (not shown).

The sampling unit 410 is installed on the flow path of the particles passing through the charged portion 30, and finally collect the alloy particles produced by agglomeration, and measure the mass concentration of the entire particulate matter or And a sampler (not shown) (for example, a high volume air sampler, a low volume air sampler, etc.) used for the analysis.

After passing through the sampler, the air discharged to the atmosphere is preferably discharged after high performance filtering of alloy particles which may be harmful to the human body through a high effecciency particulate arrestor (HEPA) filter.

The high volume air sampler method collects suspended particulate matter in the air on a filter paper using a high volume air sampler. The particle size of the collected particles is generally In the range of 0.1 ~ 100㎛, the high volume air sampler may be composed of an air suction unit, filter paper holder, flow rate measuring unit and a protective box.

The low volume air sampler method collects suspended particulate matter in the air on a filter paper using a low volume air sampler, and generally collects particulate matter of 10 μm or less. To obtain a mass concentration or to use for component analysis of metals. The low volume air sampler may be composed of a suction pump, a separation device, a filter paper holder, and a flow measurement unit.

The particle measuring unit 430 is installed on the flow path of the particles passing through the charged portion 30, and optically measures the particles generated in the charged portion 30, scanning mobility particle sizer (SMPS) It can be configured as.

In general, SMPS is composed of DMA (differential mobility analyzer) that can separate fine particles by particle diameter, and CPC (condensation particle counter), an optical device that can measure the number of particles. It consists of a neutralizer to induce the proper classification in the DMA, and a device to control the flow rate and applied voltage of the DMA.

The charge water measuring unit 450 is installed on the flow path of the particles passing through the charge unit 30, to measure the charge water of the particles generated in the charge unit 30, mainly to capture anions It may consist of an ion trap used and an electrometer for measuring a small amount of potential or current.

The charge control unit controls the voltage applied to the charge unit 130, the position of the charge unit 130, and the like according to the measurement results of the particle measuring unit 430 and the charge water measurement unit 450. It is a component provided with a control device for adjusting the strength.

When the size or number of particles measured by the particle measuring unit 430 or the number of charges measured by the charged water measuring unit 450 exceeds or falls below a set range, the charged unit 30 is connected to the electrode of the discharge unit. Outputs a control command to control the charge intensity while moving close to or close to (11), or to control the charge intensity by controlling the power supply device of the first charge unit 130 or the second charge unit 230. do.

4 is a conceptual diagram illustrating a nanoparticle generator using a spark discharge device and a charge device according to a third embodiment of the present invention.

Referring to FIG. 4, the nanoparticle generating device using the spark discharge device and the charge device according to the third embodiment of the present invention, the spark discharge device and the charge device according to the second embodiment of the present invention shown in FIG. 3. Compared to the nanoparticle generating device using the first discharge unit 110, the first charge unit 130, the second discharge unit 210, the second charge unit 230, and includes a particle mixing unit 310 Has a configuration.

The first discharge unit 110 and the second discharge unit 210 have the same structure as the discharge unit 10 shown in FIG. 2, and the first charge unit 130 and the second charge unit 230. ) Has the same structure as the charged portion 30, the structure of each of the first discharge portion 110, the first discharge portion 130, the second discharge portion 210, the second charge portion 230 The duplicate description will be omitted.

Referring to FIG. 4, each of the first discharge part 110 and the second discharge part 210 is provided with a pair of electrodes 111 and 211 (see FIG. 7) disposed at predetermined intervals, and supply gas. Inert gas or nitrogen is installed in the space in which the electrodes 111 and 211 are installed by an apparatus (eg, a carrier air supply system) and a flow meter (eg, a mass flow meter). The designated flow rate is injected.

In the first discharge unit 110 and the second discharge unit 210, the electrodes 111 and 112 made of the first metal (for example, Ni, Ag, Pt, etc.) are used, and the electrode ( A high voltage is applied to 111 and 112 to evaporate (evaporate) and granulate the first metal by spark discharge.

The first charged part 130 and the second charged part 230 include the particle charging device, and pass through each of the first discharge part 110 and the second discharge part 210. It is installed on the flow path of the particles.

The first charge unit 130 charges the first metal particles discharged from the first discharge unit 110 to a positive charge, and the second charge unit 230 is discharged from the second discharge unit 210. The discharged first metal particles are negatively charged.

The particle mixing unit 310 aggregates the first metal particles that have passed through the first charged part 130 and the second charged part 230 by the attraction force between the positive charge and the negative charge in the mixing chamber 311. Many of the first metal particles produce particles in agglomerated form, which is distinguished from that of implementing interparticle agglomeration by any collision between the neutralized first metal particles.

As the degree of positive charge charge of the first metal particles and the degree of negative charge charge of the second metal particles are stronger, aggregation between the first metals on the particle mixing unit 310 may be more quickly and clearly implemented.

According to the characteristics of the voltage applied to the electrodes 111 and 211, the particles may be granulated in a positively charged or negatively charged state. In the first discharge part 110, a high voltage is applied between the pair of electrodes 111. A positive voltage is applied to the electrode 111 formed of the first metal, and the second discharge part 210 applies a high voltage between the pair of electrodes 211, but the electrode composed of the first metal. By applying a negative voltage to 211, the first metal particles can be generated as positive charges and negative charges, respectively.

When the first metal particles are positively charged in the first discharge unit 110 as described above, the first metal particles in the state of being positively charged in the first discharge unit 110 are the first charge unit ( Positive charge is further charged while passing through 130, and when the first metal particles are negatively charged in the second discharge unit 210, the first discharged state is negatively charged in the second discharge unit 210. The metal particles are further charged while passing through the second charged portion 230.

As the first charge part 130 and the second charge part 230 are adjacent to the electrodes 111 and 211 of the first discharge part and the second discharge part, respectively, the first discharge part 110 and the first discharge part 130 and the second discharge part 230 are formed. Before the first metal particles generated in each of the two discharge parts 210 are neutralized, the first metal particles may be further charged to increase the number of charges, and thus, between the first discharge part 110 and the first charge part 130. Charge intensity can be adjusted by adjusting the space | interval and the space | interval between the 2nd discharge part 210 and the 2nd charge part 230. FIG.

When the discharge unit 10 and the charge unit 30 is applied to the first discharge unit 110 and the first discharge unit 130 or the second discharge unit 210 and the second discharge unit 230 When it is necessary to produce the first metal particles in a fine size in which aggregation between particles is minimized, the first discharge part 110 and the first charge part 130, the second discharge part 210, and By operating only one side of the second charging unit 230, it is possible to implement the operation, operation and effect according to the first embodiment of the present invention using the third embodiment of the present invention.

In addition, the first discharge unit 110 and the second discharge unit 210 are not configured as a separate spark discharge device, respectively, integrated into one spark discharge device to generate the first metal particles, one It is also possible to partition and supply the first metal particles generated in the spark discharge device of the first charge portion 130 and the second charge portion 230.

The particle mixing unit 310 aggregates the first metal particles that have passed through the first charged part 130 and the second charged part 230 by the attraction force between the positive charge and the negative charge in the mixing chamber 311. Produce alloy particles (see S3 in FIG. 7).

A state in which liquid or solid particles are uniformly distributed in a fine form mainly in a gas such as air is called aerosol. The aerosol particles composed of the first metal particles serve as a condensation nucleus or a coagulation nucleus. It plays an important role in the aggregation process of metal particles.

5 is a flowchart illustrating a particle size control method using a spark discharge device and a charge device according to a first embodiment of the present invention, and FIGS. 6 and 7 respectively illustrate a spark discharge device and a spark discharge device according to the first embodiment of the present invention. A conceptual diagram visually illustrating various embodiments of a particle size control method using a charging device.

5, 6, and 7, the particle size control method using the spark discharge device and the charging device according to the first embodiment of the present invention, largely metal granulation step (S1), particle charging step (S2), particles It is made through the size adjustment step (S3).

The particle size control method using the spark discharge device and the charge device according to the first embodiment of the present invention, the nanoparticle generating device using the spark discharge device and the charge device according to the first, second, and third embodiments of the present invention It can be implemented using, and overlapping with the description of the nanoparticle generating device using the spark discharge device and the charging device according to the first, second, third embodiment of the present invention will be omitted the detailed description.

In the metal particle forming step (S1), the first metal is evaporated and granulated by spark discharge, and in the particle charging step (S2), the particles of the first metal are charged with the same or different charges, and the particles In the sizing step S3, the particles of the first metal are spaced apart from each other by repulsive force between the same charges, or aggregated together by attraction between different charges.

In the embodiment shown in FIG. 6, the particles of the first metal are charged with the same charge in the particle charging step S2, and the repulsive force between the same charges of the particles of the first metal in the particle size adjusting step S3. By visually illustrating the process of mutually spaced apart by, the aggregation between the first metal particles is minimized while the particle charging step (S2) and the particle size adjustment step (S3).

In the embodiment shown in FIG. 7, the particles of the first metal are charged with different kinds of charges in the particle charging step (S2), and the particles of the first metal are exchanged with each other in the particle size adjusting step (S3). Visually illustrating the process of mutual aggregation by the attraction between the different charges, the aggregation between the first metal particles is maximized through the particle charge step (S2) and the particle size adjustment step (S3).

Nanoparticle generating device and particle size control method using the spark discharge device and the charging device according to the present invention having the configuration as described above, by using a particle charging device, the particles composed of one metal component spaced apart from each other by the repulsive force By reducing the size of the nanoparticles to a fine size corresponding to one particle, or by clearly inducing aggregation between each other by the attractive force can be expanded to a size that is difficult to form by any collision between the particles.

Accordingly, the range of the particle size that can be produced can be further expanded compared to the conventional one, and the nanoparticles having a desired particle size can be reliably produced by adjusting or maintaining the type of charge, charge rate, and the like.

In the production of nanoparticles of a fine size corresponding to one particle, the first metal particles are continuously charged with positive or negative charges, thereby preventing the aggregation of each other by electrostatic repulsive force, thereby yielding nanoparticles of the first metals. Can be significantly improved.

In addition, in producing large-sized nanoparticles that are difficult to form by arbitrary collisions between particles, they quickly and clearly aggregate with each other by electrostatic attraction between the first metal charged with a positive charge and the first metal charged with a negative charge. By doing so, the yield of nanoparticles produced by the first metal can be significantly improved.

In addition to adjusting the voltage applied to the electrodes 111 and 211 of the first and second discharge parts and the flow rate of the supply gas, the strength and position of the first and second charge parts 130 and 230 are adjusted. It is possible to continuously and precisely control the positive charge charge rate, negative charge charge rate and the aggregation rate between the first metal of one metal, and thus the optimum conditions for alloy formation can be easily detected.

In addition, in the case of using two spark discharge devices and a charge device, the production of alloy particles can be significantly increased by more than two times compared to using only the spark discharge device, and other components (for example, the mixing chamber 311). By using only one, it is possible to implement the same degree of productivity with less volume, cost, and energy consumption compared to two conventional metal particle manufacturing apparatus.

The present invention has been described with reference to preferred embodiments of the present invention, but the present invention is not limited to these embodiments, and the embodiments of the present invention are combined with the embodiments of the present invention. In the description it should be seen that the techniques that can be used by those skilled in the art to which the present invention pertains are naturally included in the technical scope of the present invention.

10: discharge part 30: charge part
110: first discharge portion 11, 111, 211: electrode
130: first discharge portion 210: second discharge portion
230: second charge portion 310: particle mixing portion
311: mixing chamber 330: heat condensing unit
331: heating furnace 410: sample collection unit
430: particle measuring unit 450: charge water measuring unit
S1: metal granulation step S2: particle charging step
S3: particle size adjustment step

Claims (14)

A discharge unit 10 for evaporating and granulating the surface of the electrode 11 made of the first metal by spark discharge; And
A charging unit 30 for charging the first metal particles discharged from the discharge unit 10 with the same or different charges;
Including but not limited to:
The discharge unit 10,
Apply a voltage between the pair of electrodes 11, apply a voltage (or negative voltage) to the electrode 11 made of the first metal,
The charged portion 30,
A spark discharging device and a nanoparticle generating device using a charging device, characterized in that a positive charge (or negative charge) is added to the first metal having a positive charge (or negative charge).
The method of claim 1,
The charged portion 30,
The spark discharge device and the charge, characterized in that for charging the first metal particles discharged from the discharge unit 10 with the same kind of electric charge so that the aggregation between the first metal particles is inhibited by the repulsive force between the first metal particles. Nanoparticle generator using the device.
The method of claim 1,
The charged portion 30,
A particle charging device that charges suspended particles in air;
Metal alloy manufacturing apparatus using a spark discharge device and a charging device comprising a.
The method of claim 3,
The particle charging device is a metal alloy manufacturing apparatus using a spark discharge device and a charging device, characterized in that the ionizer (ionizer) or corona discharge (corona discharger).
A discharge unit 10 for evaporating and granulating the surface of the electrode 11 made of the first metal by spark discharge; And
A charging unit 30 for charging the first metal particles discharged from the discharge unit 10 with the same or different charges;
Including but not limited to:
The discharge unit 10,
A first discharge part 110 for evaporating and granulating the surface of the positive electrode formed of the first metal by spark discharge; And
A second discharge part 210 which evaporates and granulates the surface of the negative electrode made of the first metal by spark discharge;
Metal alloy manufacturing apparatus using a spark discharge device and a charging device comprising a.
The method of claim 5,
The charged portion 30,
A first charge part 130 for additionally charging the first metal particles discharged from the first discharge part 110 to a positive charge;
A second charge unit 230 for additionally charging the first metal particles discharged from the second discharge unit 210 to a negative charge;
Nanoparticle generating device using a spark discharge device and a charging device comprising a.
The method according to claim 6,
The first charged portion 130, the second charged portion 230,
Charge intensity is adjusted by adjusting the distance between the electrode of the first discharge portion, the second discharge portion (111, 211) and the nanoparticle generating device using a spark discharge device and a charge device.
The method according to claim 6,
A particle mixing part 310 which aggregates the first metal particles having passed through the first and second charge parts 130 and 230 by attraction between positive and negative charges in the mixing chamber 311;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
9. The method of claim 8,
A heating agglomerating part 330 which aggregates the alloy particles generated in the mixing chamber 311 into each other in the heating furnace 331;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
10. The method of claim 9,
A sampling part 410 installed on the flow path of the particles passing through the charged part 30, the particle mixing part 310, or the heating aggregating part 330, and finally collecting agglomerated alloy particles;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
9. The method of claim 8,
It is installed on the flow path of the particles passing through the charged portion 30 or the first charged portion 130, the second charged portion 230, the particle mixing unit 310, the first charged portion 130, A particle measuring unit 430 for optically measuring the particles generated by the second charged unit 230 and the particle mixing unit 310;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
9. The method of claim 8,
It is installed on the flow path of the particles passing through the charged portion 30 or the first charged portion 130, the second charged portion 230, the first charged portion 130, the second charged portion 230 Charge number measuring unit 450 for measuring the charge number of the particles generated in the;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
The method of claim 12,
When the number of charges measured by the charge water measuring unit 450 exceeds or falls below a set range, the first discharge unit 130 or the second charge unit 230 may be replaced by the first discharge unit 110 and the second discharge unit. A charge control unit spaced apart from or close to the electrode 111 of the discharge unit 210 or outputting a control command for controlling the charge intensity of the first charge unit 130 or the second charge unit 230 itself;
Nanoparticle generating device using a spark discharge device and a charging device, characterized in that it further comprises.
A metal particle forming step (S1) of evaporating and granulating the first metal by spark discharge;
A particle charging step of charging the particles of the first metal with the same charge or different charges (S2); And
A particle size adjusting step (S3) of allowing the particles of the first metal to be spaced apart from each other by repulsive force between the same charges, or mutually coagulating by attraction between different charges;
Including but not limited to:
In the metal granulation step S1, a voltage is applied between the pair of electrodes 11, and a voltage (or negative voltage) is applied to the electrode 11 formed of the first metal.
The particle charging step (S2) is a particle size control method using a spark discharge device and a charging device, characterized in that additional charge (or negative charge) to the first metal having a positive charge (or negative charge).

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