KR102181616B1 - Plasma Generation Apparatus And Portable Plasma Cosmetic Apparatus - Google Patents

Abstract

The present invention provides a plasma generating device and a portable plasma beauty device. The plasma generating apparatus includes: a power electrode including a needle-shaped probe having a pointed tip and receiving a high voltage to perform discharge; A cylindrical ground electrode disposed to surround the power electrode and including a ventilation hole on a side surface to allow external air to circulate; And an insulator disposed on the open front surface of the ground electrode and spaced apart in the extension direction of the probe to provide a discharge space for generating plasma and to be disposed opposite to the power electrode, and including a through hole in a region facing the probe. Includes a formed front case.

Description

Plasma Generation Apparatus And Portable Plasma Cosmetic Apparatus}

The present invention relates to a portable plasma beauty device for eradicating bacteria in the skin or pores of the human body and removing organic matter and foreign matter.

The present invention relates to a portable plasma beauty device, and more specifically, to a portable plasma beauty device that secures the portability of generating plasma even when a battery is installed inside as a miniaturized power source and a gas that catalyzes plasma discharge is not added. About.

Korean Open Utility Model No. 20-2011-0003121 discloses a "portable beauty device using plasma", and a catalyst gas is injected to generate plasma, and a through hole is formed in the ground electrode so that the plasma is directly delivered to the skin. Thus, skin damage may occur.

Korean Patent Registration No. 10-126232 discloses a "plasma skin regeneration device", in which a catalyst gas is injected to generate plasma, and a through hole is formed in the ground electrode so that plasma is directly delivered to the skin. Thus, skin damage may occur.

The lowest energy state of matter is a solid. The solid is energized and gradually becomes a liquid and then into a gas. At this time, if sufficient energy equal to or greater than the ionization energy is applied to the neutral gas, plasma composed of electrons, ions, neutral atoms and molecules can be created by ionization and recombination of electrons and ions.

In the plasma interior, positive charges (ions) and negative charges (electrons) are mixed in almost the same amount, and they perform Brownian motion close to free particles while maintaining electrical neutrality, so they are called electrically ionized conductive gas species.

Plasma has several classification criteria such as plasma density, electron temperature, degree of thermal equilibrium between species, generation method, application field, etc., but classification by density and electron temperature is the most basic.

Plasma is classified by the degree of thermal equilibrium, and it can be divided into local thermal equilibrium (LTE) and non-LTE, and the term local thermal equilibrium means that the temperature of all plasma particles is It means the same thermodynamic state in the local domain.

Plasma for research or manufacturing processes is usually either LTE or non-LTE plasma, and generally the former is called thermal plasma and the latter is called low temperature plasma.

In the present invention, low-temperature plasma is targeted, and it belongs to atmospheric pressure plasma among low-temperature plasma.

Atmospheric pressure plasma is mainly used in areas such as surface modification and coating of materials, and environmental purification. In recent years, related research is expanding into bio-applications and biomedical applications. In the field of biomedical, atmospheric pressure plasma jet devices are being studied a lot.

The electrode structure of the plasma jet is mostly a needle-shaped needle electrode structure, and various configuration methods are being studied depending on the power supply device. Mainly, inert gas is injected from the outside and a high voltage is applied to the needle electrode structure to generate plasma. A dielectric barrier discharge (DBD) type plasma jet device in which a small hole is installed in the center of a small circular parallel plate is also being introduced.

Various types of plasma jet power supplies are introduced depending on the driving frequency. There are DC pulse power and AC power as power supplies for low frequency discharge of tens to hundreds of kHz.

Plasma jets are widely used for sterilization and sterilization purposes. Plasma containing oxygen radicals is being used to whiten teeth, destroy pathogens, and coagulate blood. The main issues in the use of such biomedical fields are the miniaturization of the device, ease of control, and safety for the human body.

It is an important task to secure stability against electric shock in order to be applied directly to cells or human body. Therefore, in order to ensure stability, the high voltage electrode should not directly contact the specimen and the human body. The driving voltage applied to the electrode should be lowered and the amount of plasma current should be controlled to a small value of 1 ~ 2 mA so that there is no electric shock to the living body. The minimum current that the human body can detect is about 1mA for an adult male at 60Hz power frequency AC, and the sensing current increases as the frequency increases. In addition, the current that feels pain is 7 to 8 mA, and a higher current becomes a dangerous factor not only electrically but also thermally.

One technical problem to be solved of the present invention is to provide a plasma generating device that minimizes irritation to the skin and provides a stable cosmetic effect.

A plasma generating apparatus according to an embodiment of the present invention includes a power electrode including a needle-shaped probe having a pointed tip and receiving a high voltage to perform discharge; A cylindrical ground electrode disposed to surround the power electrode and including a ventilation hole on a side surface to allow external air to circulate; And an insulator disposed on the open front surface of the ground electrode and spaced apart in the extension direction of the probe to provide a discharge space for generating plasma and to be disposed opposite to the power electrode, and including a through hole in a region facing the probe. Includes a formed front case.

In an embodiment of the present invention, a cylindrical case including a cavity inside, coupled to the ground electrode, and formed of an insulator extending in a direction of a central axis of the ground electrode may further be included.

In an embodiment of the present invention, a liquid storage unit disposed in the cavity; And a liquid delivery unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space.

In one embodiment of the present invention, it may further include a liquid vaporization unit for naturally vaporizing or forcibly vaporizing the liquid provided by the liquid delivery unit.

In one embodiment of the present invention, a battery mounted in the cavity and capable of charging and discharging; And a high voltage power supply unit mounted on the cavity and receiving DC voltage from the battery and supplying DC high voltage power to the power electrode.

In one embodiment of the present invention, the power electrode includes a power electrode base having a rectangular parallelepiped shape to receive a high voltage; A plurality of probes arranged to have symmetry and mounted on one surface of the power electrode base; And a power electrode protrusion for fitting and protruding from the power electrode base on the other surface opposite to the one surface of the power electrode base.

In an embodiment of the present invention, the ground electrode may include a hollow rectangular cylindrical body portion; A first vent formed on a side of the body portion; A second ventilation opening disposed to be spaced apart from the first ventilation opening; And at least one of auxiliary grounding portions extending in the direction of the central axis from one side of the inner grounding portion of the inner grounding portion of the body portion in a "U" shape disposed on the inner surface of the body portion.

In one embodiment of the present invention, the second ventilation hole may be formed by recessing a portion of the side at a side where the front surface of the body portion and the side surface of the body portion contact.

In an embodiment of the present invention, the front case includes a plate-shaped front case base; A through hole formed in the front case base to be aligned with the probe; And a fitting coupling portion formed to protrude from an arrangement plane of the front case base at an edge of the front case base.

In an embodiment of the present invention, an insulating member disposed between the power electrode and the ground electrode may further include an insulating member disposed to surround the power electrode. The insulating member includes: a first insulating member exposing the probe, surrounding three sides of the power electrode base having a rectangular parallelepiped shape of the power electrode, and exposing an upper surface of the power electrode base; And a second insulating member disposed on the exposed upper surface of the power electrode.

In one embodiment of the present invention, the case may further include a cylindrical case including a cavity therein, coupled to the ground electrode, and formed of an insulator extending in the direction of a central axis of the ground electrode. A rectangular parallelepiped-shaped lower case coupled to the body portion of the ground electrode and including a recessed portion therein; And an upper case coupled to the open upper surface of the lower case and coupled to the auxiliary ground portion. The lower case has a rectangular parallelepiped shape and a lower case body portion having a recessed portion formed thereon; A first insulating member having a "U" shape disposed at one end of the lower case body and enclosing three sides of the power electrode having a rectangular parallelepiped shape; A first coupling portion to which the first insulating member is coupled; An interlayer separation membrane separating a liquid delivery space formed under the depression and the depression; And a partition wall separating the first coupling part and the recessed part. The cavity may be formed by the recessed portion and the lower surface of the upper case, and the interlayer separator may include a through hole connecting the recessed portion and the liquid transfer space.

In one embodiment of the present invention, a battery mounted in the recessed portion and capable of charging and discharging; A high voltage power supply unit mounted on the depression and receiving DC voltage from the battery and supplying DC high voltage power; A liquid storage unit mounted on the recessed portion and storing liquid to be vaporized; And a liquid delivery unit disposed in the through hole of the interlayer separation membrane and the liquid delivery space to provide the liquid from the liquid storage unit to the discharge space.

In one embodiment of the present invention, the probe may be formed of a conductor, and the surface of the probe may be coated with gold or platinum.

In one embodiment of the present invention, the ground electrode may be formed of a plastic material, and a surface of the ground electrode may be coated with a conductor.

A plasma generating apparatus according to an embodiment of the present invention includes a power electrode including a needle-shaped probe having a pointed tip and receiving a high voltage to perform discharge; A cylindrical ground electrode disposed to surround the power electrode and including at least two vents on side surfaces to allow external air to circulate; A cylindrical case including a cavity therein, coupled to the ground electrode, and formed of an insulator extending in a direction of a central axis of the ground electrode; It is disposed on the open front surface of the ground electrode, is spaced apart in the extension direction of the probe, is disposed to face the power electrode, provides a discharge space for generating plasma, and is formed of an insulator including a through hole in a region facing the probe. Front case; A liquid storage unit disposed in the cavity; And a liquid delivery unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space.

A portable plasma beauty apparatus according to an embodiment of the present invention includes a case including a cavity inside and formed of a non-conductive material; A battery mounted in the cavity and capable of charging and discharging; A high voltage power supply unit mounted in the cavity and receiving DC voltage from the battery to supply DC high voltage power; A power electrode including a needle-shaped probe for generating plasma by receiving DC high voltage power from the high voltage power supply unit; A ground electrode disposed around the power electrode and spaced apart from the power electrode; A front case made of a non-conductive material that includes a through hole aligned with the probe, is disposed to face the power electrode, and is fixed to the ground electrode; A liquid storage unit mounted on the cavity and storing liquid to be vaporized; And a liquid transfer unit for moving the liquid of the liquid storage unit to a discharge space between the power electrode and the front case.

The portable plasma cosmetic treatment method according to an embodiment of the present invention includes a power electrode including a needle-shaped probe, a cylindrical ground electrode surrounding the power electrode, and a through hole blocking the open front surface of the ground electrode. Providing a discharge space defined by the front case; Providing water vapor by vaporizing water in the discharge space; Forming plasma in a discharge space by applying a DC high voltage to the power electrode while the front case is in contact with the human skin; And providing a convective flow to the discharge space through at least two vents formed in the ground electrode.

In the present invention, since plasma is generated without gas injection, it is convenient to carry and use, and it is effective in terms of cost because it does not require replacement of gas.

1 is a conceptual diagram illustrating a plasma generating apparatus according to an embodiment of the present invention.
2A is a perspective view illustrating a plasma generating apparatus according to another embodiment of the present invention.
2B is a perspective view of the plasma generating apparatus of FIG. 2A with the front case removed.
3 is an exploded perspective view of the plasma generating apparatus of FIG. 2A.
4 is a perspective view illustrating a ground electrode of FIG. 3.
5 is a perspective view showing the lower case of FIG. 3.
6 is a cross-sectional view taken along line II′ of FIG. 2A.
7 is a cross-sectional view taken along line II-II' of FIG. 2A.
8 is a graph showing a spectral spectrum of a plum formed by the operation of the plasma generating apparatus according to an embodiment of the present invention.

Compared to RF discharge, DC discharge is inexpensive and can provide a simple structure. In order to stably perform atmospheric pressure discharge, a catalyst gas is used. On the other hand, the catalyst gas requires a separate gas storage means, it is inconvenient to carry and requires a large space.

The present invention provides a plasma cosmetic apparatus capable of using stable plasma by generating convection with an external atmosphere in a discharge space without using a catalyst gas according to an embodiment of the present invention. In particular, plasma is generated by reacting oxygen, hydrogen, moisture, and nitrogen in the air. In particular, the amount of moisture can stabilize plasma discharge and generate OH radicals (hydroxyl groups). OH radicals can perform sterilization and deodorization.

If moisture is continuously supplied to the enclosed space, the moisture may not be vaporized any more when the saturated water vapor pressure is reached, but may be liquefied into a liquid. Therefore, it can play a fatal role in the discharge structure. Therefore, in a situation where moisture is supplied, convection of air is required in the sealed discharge space.

According to an embodiment of the present invention, when atmospheric pressure DC discharge is performed, a pressure difference is locally generated by the discharge, and ion wind may be generated. Accordingly, when there is a ventilation hole, the discharge space may be filled with fresh air by convection and diffusion while moisture is continuously supplied. In addition, when convection is made through the ventilation hole, the atmospheric pressure DC discharge space can suppress condensation of water vapor.

In addition, when atmospheric pressure DC discharge occurs directly between the power electrode and a human body operating as a ground, a current of about 1 mA or more may flow to the skin. Accordingly, the user can feel pain and damage the skin.

According to an embodiment of the present invention, when performing atmospheric pressure DC discharge, while suppressing the current flowing between the power electrode and the skin to less than about 1 mA, the skin absorbs radicals such as OH radicals (hydroxyl groups) through the through hole of the front case. Can be supplied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art. In the drawings, components are exaggerated for clarity. Parts indicated by the same reference numerals throughout the specification represent the same elements.

1 is a conceptual diagram illustrating a plasma generating apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the plasma generating apparatus 100 includes a power electrode 130, a ground electrode 120, and a front case 110, and performs DC glow discharge at atmospheric pressure. The power electrode 120 includes a needle-shaped probe 132 having a pointed tip, and performs discharge by receiving a high voltage. The ground electrode 120 is disposed to surround the circumference of the power electrode 130 and includes vents 121 and 122 at side surfaces to allow external air to circulate, and has a cylindrical shape. The front case 110 is disposed on the open front surface of the ground electrode 120 and spaced apart in the extension direction of the probe 132 to face the power electrode 130 and provides a discharge space for generating plasma. And an insulator including a through hole 112 in a region facing the probe 132.

The power electrode 130 may include a needle-shaped probe 132 and a power electrode base 134. The power electrode base 134 may have a polygonal column shape or a circular column shape. The power electrode base 134 may receive a high voltage of several kV from the high voltage power supply unit 154. There may be one or more probes 132. The probe 132 may be a conductive material such as copper, gold, silver, iron, or tungsten. The probe 132 may have a diameter of several hundred micrometers to several millimeters. Preferably, the diameter of the probe 132 may be 2 mm. The surface of the probe 132 may be coated with gold or platinum. The gold or platinum coating may suppress ozone generation and may suppress oxidation of the probe 132. The probe 132 may be arranged with symmetry. The probe 132 may be coupled to the power electrode base 134 through screw coupling. The probe 132 may protrude from the power electrode base 134 by about 2 mm to 5 mm. The distance between the probe 132 and the front case 110 may be 5 mm to 10 mm.

The insulating member 140 may be disposed so as to surround the power electrode base 134 to prevent direct contact with the ground electrode 120. The insulating member 140 may have a toroidal shape having a square cross section. The insulating member 140 may be plastic, acrylic, or resin. Preferably, the insulating member may be an ABS (Acrylonitrile Butadiene Styrene) resin.

The ground electrode 120 may be disposed to surround the insulating member 140. The ground electrode 120 may be formed of a conductive material or may be formed through a conductive coating on an insulating material. The ground electrode 120 may have a toroidal shape having a square cross section or a rectangular cylindrical shape.

The ground electrode 120 may be grounded by a user's hand. Accordingly, discharge may be initiated between the probe 132 of the power electrode and the ground electrode 120. The discharge creates a plasma, and the plasma contains radicals and ions. Thus, the generated radicals can sterilize the surface of the skin. When the user's skin approaches the front case 110 while the discharge is started, the lykal generated in the discharge space may be provided to the skin through the through hole 112 of the front case 110.

The ground electrode 120 may include a first ventilation hole 121 and a second ventilation hole 122 on a cylindrical side surface. The first vent 121 may be disposed adjacent to the power electrode 130, and the second vent 122 may be disposed adjacent to the front case 110. The first ventilation hole 121 may function as an intake port, and the second ventilation hole 122 may function as an exhaust air. By the plasma discharge, ion wind is generated, and convection may be induced. External air may be introduced through the first vent 121 to form radicals through discharge. The radicals are provided to the skin, perform sterilization, and the like, and may be exhausted through the second ventilation hole 122.

The plasma generating apparatus according to an embodiment of the present invention uses a remote plasma method. Specifically, a portion where plasma is generated and a portion acting on the skin are separated. Since plasma is not directly generated in the skin, the plasma generating device performs an action such as sterilization without skin irritation.

The front case 110 may be inserted into the open surface of the ground electrode 120 to be fitted. The front case 110 is made of a non-conductive material that is in contact with the skin of the human body and does not have a sense of rejection when contacting the skin. The front case 110 may suppress arc discharge between the human skin and the power electrode 130. The material of the front case 110 is preferably a silicone resin or ceramic. It is preferable that the through hole 112 of the front case 110 is disposed to face the probe 132. Accordingly, the ion air may provide radicals to the skin behind the through hole 112 to perform an action such as sterilization.

The case 160 may be fixed by being combined with the upper limb ground electrode 120. The case 160 is formed of an insulator, and may be made of plastic or resin. The case 160 may include a cavity 161 therein. The case 160 may be continuously coupled to the ground electrode 120 without having a jaw. When the ground electrode 120 has a rectangular cylindrical shape, the case 160 may have a rectangular cylindrical shape having the same outer diameter. When the ground electrode 120 has a cylindrical shape, the case 160 may have a cylindrical shape having the same outer diameter. The case 160 may be divided into an upper case 164 and a lower case 162. The upper case 164 may be a lid of the lower case 162. A battery, a high voltage power supply unit 154, and a liquid storage unit may be disposed inside the cavity.

The battery 152 may be charged by receiving power from an external power source. In addition, the battery 152 may supply a DC voltage to the high voltage power supply unit 154. The battery may be a lithium polymer battery. The battery 152 may be charged by a DC power terminal.

The high voltage power supply unit 154 may receive DC 7 ~ 12V from the battery furnace and generate a high voltage of DC 3 ~ 8kV. The high voltage power supply unit 154 may apply a high voltage to the power electrode 130.

The liquid storage unit 156 is a tank that stores liquid. The liquid storage unit 156 may store water. The liquid storage unit 156 may be supplied with a liquid by connecting with a pipe from the outside. The liquid may be water.

The liquid delivery unit 170 may move water stored in the liquid storage unit 156 to a discharge space between the power electrode 130 and the ground electrode 120. For example, the liquid delivery unit 170 may include a porous material and a pipe surrounding the porous material. The porous material may be a sponge.

The liquid vaporization unit 174 may vaporize the liquid moved by the liquid delivery unit 170. The liquid vaporization unit 174 may include an ultrasonic vibrator. The ultrasonic vibrator may be a piezoelectric element. The ultrasonic vibrator may evaporate water by vibrating it.

2A is a perspective view illustrating a plasma generating apparatus according to another embodiment of the present invention.

2B is a perspective view of the plasma generating apparatus of FIG. 2A with the front case removed.

3 is an exploded perspective view of the plasma generating apparatus of FIG. 2A.

4 is a perspective view illustrating a ground electrode of FIG. 3.

5 is a perspective view showing the lower case of FIG. 3.

6 is a cross-sectional view taken along line II′ of FIG. 2A.

7 is a cross-sectional view taken along line II-II' of FIG. 2A.

2 to 7, the plasma generating device 200 includes a needle-shaped probe 132 having a pointed tip, and a power electrode 130 for performing discharge by receiving a high voltage, and the power electrode 130 It is disposed so as to surround the circumference of and includes vents 121 and 122 on the side to allow external air to circulate, and disposed on the open front surface of the cylindrical ground electrode 120 and the ground electrode 120, and the probe 132 ) Is spaced apart from the power electrode 130 and disposed to face the power electrode 130, provides a discharge space for generating plasma, and includes a front case 110 formed of an insulator including a through hole in a region facing the probe. .

The power electrode 130 includes a power electrode base 134 in a rectangular parallelepiped shape receiving a high voltage, a plurality of probes 132 arranged to have symmetry and mounted on one surface of the power electrode base, and the power electrode base 134 ) May include a power electrode protrusion 136 for fitting and protruding from the power electrode base 134 on the other surface opposite to one surface of the ).

The power electrode base 134 has a rectangular parallelepiped shape, has a plurality of grooves formed on one surface (xy plane), and a probe is inserted into each groove to be fixed. The probe 132 may be screwed with the power electrode base 134. A power electrode protrusion 136 protruding in a positive x-axis direction and a negative x-axis direction is disposed on the other surface facing one surface of the power electrode base 134. The power electrode protrusion 136 may be inserted into a case or an insulating member to insulate the power electrode 130 while fixing the power electrode 130. The upper limb power electrode base 134 may be made of aluminum or copper.

The probe 132 may be formed of a conductor and may extend in a negative z-axis direction. The material of the probe 132 may be tungsten. The surface of the probe 132 may be coated with gold or platinum. The gold or platinum coating may suppress the oxidation of tungsten and suppress excessive generation of ozone.

The ground electrode 120 includes a hollow rectangular cylindrical body 125, a first vent 121 formed on a side surface of the body 125, and a second ventilated spaced apart from the first vent 121 Vent 122, a “U”-shaped inner grounding portion 123 disposed on the inner surface of the body portion 125, and an auxiliary grounding portion extending in the direction of the central axis from one side of the body portion 125 (124) may be included.

The body portion 125 has a rectangular cylindrical shape, and an inner ground portion 123 having a "U" shape is disposed at an inner center portion. The inner ground part 123 may be disposed along the inner surface of the body part, and may fix three side surfaces of the insulating members 241 and 262 surrounding the power electrode 130. In addition, one end of the liquid delivery unit 170 may be disposed to surround the insulating member 241 together with the inner ground unit 123.

The first ventilation hole 121 may be disposed adjacent to the inner ground part 123 and formed to penetrate the body part 125. One first ventilation hole 121 may be formed on each side. Accordingly, the first ventilation hole 121 may have a slit shape. The length of the slit may be substantially the same as the distance between the probes. The first ventilation hole 121 may operate as a suction port when ion wind is generated.

The second ventilation hole 122 may be formed to be spaced apart from the first ventilation hole 121 in the z-axis direction. It is preferable that the second ventilation hole 122 is disposed at an end of the body portion 125. Accordingly, a depression portion is formed at a portion where the front case 110 and one surface of the body portion 125 are coupled to each other, and the depression portion may provide the second ventilation hole 122. The size of the second ventilation hole 122 may be the same as the size of the first ventilation hole 121. The second ventilation hole 122 may be formed by recessing a portion of the side at a side where the front surface of the body portion 125 and the side surface of the body portion 125 contact each other.

The auxiliary ground part 124 may extend in the z-axis direction from the upper surface of the body part 124. The auxiliary ground part 124 may be provided so that a user's finger can easily contact it. The auxiliary ground part 124 may be inserted into the upper case groove 264 formed in the upper case 260.

The front case 110 includes a plate-shaped front case base 116, a through hole 112 formed in the front case base 116 in alignment with the probe 132, and the front case base 116 It may include a fitting portion 114 formed to protrude from the arrangement plane of the front case base 116 at the corner.

The front case base 116 has a square plate shape, and through holes 112 symmetrically arranged at regular intervals may be disposed at a central portion of the front case base 116. The front case 110 may be a ceramic or silicone resin as an insulator. The number of through holes 112 may be four. The through hole 112 may be aligned in the z-axis direction of the probe. The fitting coupling portion 114 may be formed to protrude in the z-axis direction from the edge portion of the front case base 116.

The cases 240 and 260 have a cylindrical shape formed of an insulator that includes a cavity therein, is coupled to the ground electrode 120 and extends in the direction of the central axis of the ground electrode 120.

The cases 240 and 260 are coupled to the body of the ground electrode 120 and have a rectangular parallelepiped-shaped lower case 240 including a recessed part 246 therein, and an open upper part of the lower case 240 It includes an upper case 260 coupled to the surface and coupled to the auxiliary ground portion 124. The upper case 260 operates as a two lid of the lower case 240.

The lower case 240 has a rectangular parallelepiped shape and is disposed at one end of the lower case body part 249 and the lower case body part 241 with a recessed part formed thereon, and surrounds the three sides of the power electrode 130 having a rectangular parallelepiped shape. The first insulating member 241 having a "U" shape, the first coupling part 244 to which the first insulating member 241 is coupled, and the liquid delivery space formed under the recessed part 246 and the recessed part An interlayer separator 248 separating the 245a, and a partition wall 247 separating the first coupling portion 244 and the recessed portion 246 are included. The cavity may be formed by the depression 246 and a lower surface of the upper case 260. The interlayer separator 248 may include a through hole 245 connecting the recessed portion 246 and the liquid delivery space 245a.

The lower case body part 240 has a rectangular parallelepiped shape extending in the z-axis direction. A recessed portion 246 is formed on the upper surface of the lower case body portion 249. The depression 246 may have a rectangular parallelepiped shape. A high voltage power supply unit 154, a battery 152, and a liquid storage unit 156 may be disposed inside the depression 246.

The first insulating member 241 may have a “U” shape formed to surround the power electrode base 134 on both side surfaces and lower surfaces. The first insulating member 241 may be disposed at one end of the lower case body 249 in the negative z-axis direction.

The first coupling part 244 may be disposed to support the first insulating member 241. The first coupling part 244 may be continuously connected to the lower case body part 249. The first insulating member 241 may be disposed to protrude from the inside of the first coupling part 244 in a negative z-axis direction.

The partition wall 247 may separate the first coupling portion 244 and the recessed portion 246. The partition wall 247 may maintain a constant distance from the first insulating member 241. The power electrode protrusion 136 may be inserted into a space between the partition wall 247 and the first insulating member 241. In the center of the partition wall 247, a recessed portion 243 for electrical connection may be included.

The interlayer separator 248 may form a lower surface of the recessed part 246. The interlayer separation membrane 248 may form a liquid delivery space under the interlayer separation membrane 248. The liquid delivery part 170 may be disposed in the liquid delivery space 245a. The interlayer separation membrane 248 may include a through hole 245, and the liquid delivery unit 170 may contact the liquid storage unit 156 through the through hole 245 to receive a liquid.

The upper case 260 may include a second insulating member 262 and an upper case body part 266 connected to the second insulating member 262. An upper case groove 264 may be formed on an upper surface of the upper case body part 266 in contact with the second insulating member 262. The auxiliary electrode part 124 may be disposed in the upper case groove 264. The upper surface of the auxiliary electrode part 124 and the upper surface of the upper case body part 266 may have the same plane.

The lower surface of the second insulating member 262 may contact the upper surface of the power electrode base 134. As the upper surface of the second insulating member 262 proceeds in the z-axis direction, the upper surface of the second insulating member 262 may protrude in the y-axis direction. The upper surface of the second insulating member 262 may contact the inner ground part 123.

The insulating members 262 and 241 may be disposed between the power electrode 130 and the ground electrode 120 and may be disposed to surround the power electrode 130. The insulating members 262 and 241 expose the probe, surround three sides of the power electrode base having a rectangular parallelepiped shape of the power electrode, and expose the upper surface of the power electrode base 134, and the It may include a second insulating member 262 disposed on the exposed upper surface of the power electrode.

According to a modified embodiment of the present invention, the ground electrode 120 may be formed of a plastic material, and the surface of the ground electrode 120 may be coated with a conductor.

A portable plasma cosmetic treatment method according to an embodiment of the present invention includes a power electrode 130 including a needle-shaped probe 132, a cylindrical ground electrode 120 surrounding the power electrode 130, and the ground. Blocking the open front surface of the electrode 120 and providing a discharge space 101 defined by the front case 110 including the through hole 112; Providing water vapor by vaporizing water in the discharge space 101; Forming plasma in the discharge space 101 by applying a DC high voltage to the power electrode while the front case 110 is in contact with the human skin; And providing a convective flow to the discharge space through at least two ventilation holes 121 and 122 formed in the ground electrode 120.

Water stored in the cavity 161 inside the case 160 is delivered to the discharge space 101 through the liquid delivery unit 170. The delivered liquid is vaporized to provide a gas for plasma generation. Further, the vents 121 and 122 formed in the ground electrode 120 provide convection to the discharge space 101 to maintain stable discharge and suppress liquid liquefaction. Plasma generates hydroxyl groups, and the generated hydroxyl groups are provided to the skin of the human body by ion wind and diffusion to perform sterilization.

8 is a graph showing a spectral spectrum of a plum formed by the operation of the plasma generating apparatus according to an embodiment of the present invention.

Referring to FIG. 8, plasma emits light, and plasma emission light includes spectra of N2, OH-, and N2+. Thus, water vapor can be discharged to form a hydroxyl group.

In the above, the present invention has been illustrated and described with respect to specific preferred embodiments, but the present invention is not limited to these embodiments, and the present invention claimed in the claims by one of ordinary skill in the art to which the present invention pertains. It includes all various types of embodiments that can be implemented within the scope not departing from the technical idea.

100: plasma generating device 110: front case
120: ground electrode 130: power electrode
140: insulating member 152: battery
154: high voltage power supply unit 156: liquid storage unit
160: case 170: liquid delivery unit

Claims (17)

A power electrode including a needle-shaped probe having a pointed tip and performing discharge by receiving a high voltage;
A cylindrical ground electrode disposed to surround the power electrode and including a ventilation hole on a side surface to allow external air to circulate; And
It is disposed on the open front surface of the ground electrode, is spaced apart in the extension direction of the probe, is disposed to face the power electrode, provides a discharge space for generating plasma, and is formed of an insulator including a through hole in a region facing the probe. Plasma generating apparatus comprising a front case. The method of claim 1,
And a cylindrical case formed of an insulator that includes a cavity therein, is coupled to the ground electrode, and extends in a direction of a central axis of the ground electrode. The method of claim 2,
A liquid storage unit disposed in the cavity; And
And a liquid delivery unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space. The method of claim 3,
Plasma generating apparatus, characterized in that it further comprises a vaporization unit for naturally vaporizing or forcibly vaporizing the liquid provided by the liquid delivery unit. The method of claim 3,
A battery mounted in the cavity and capable of charging and discharging; And
And a high voltage power supply unit mounted in the cavity and receiving DC voltage from the battery and supplying DC high voltage power to the power electrode. The method of claim 1,
The power electrode is:
A power electrode base of a rectangular parallelepiped shape receiving a high voltage;
A plurality of probes arranged to have symmetry and mounted on one surface of the power electrode base; And
And a power electrode protrusion for fitting and protruding from the power electrode base on the other surface opposite to one surface of the power electrode base. The method of claim 1,
The ground electrode is:
A hollow square cylindrical body portion;
A first vent formed on a side of the body portion;
A second ventilation opening disposed to be spaced apart from the first ventilation opening; And
Plasma generating apparatus comprising at least one of auxiliary ground portions extending from one side of the body portion in a direction of a central axis from one side of the inner ground portion in a "U" shape disposed on the inner surface of the body portion. The method of claim 7,
The second ventilation hole is a plasma generating apparatus, characterized in that formed by recessing a portion of the side at a side where the front surface of the body portion and the side surface of the body portion contact. The method of claim 1,
The front case is:
A plate-shaped front case base;
A through hole formed in the front case base to be aligned with the probe; And
And a fitting coupling portion formed to protrude from an arrangement plane of the front case base at an edge of the front case base. The method of claim 1,
Further comprising an insulating member disposed between the power electrode and the ground electrode to surround the power electrode,
The insulating member is:
A first insulating member exposing the probe, surrounding three sides of the power electrode base having a rectangular parallelepiped shape of the power electrode, and exposing an upper surface of the power electrode base; And
And a second insulating member disposed on the exposed upper surface of the power electrode. The method of claim 7,
Further comprising a tubular case formed of an insulator including a cavity therein, coupled to the ground electrode and extending in a direction of a central axis of the ground electrode,
The case above is:
A rectangular parallelepiped-shaped lower case coupled to the body portion of the ground electrode and including a recessed portion therein; And
Including an upper case coupled to the open upper surface of the lower case and coupled to the auxiliary ground,
The lower case is:
A lower case body portion having a rectangular parallelepiped shape and having a depression portion formed thereon;
A first insulating member having a "U" shape disposed at one end of the lower case body and enclosing three sides of the power electrode having a rectangular parallelepiped shape;
A first coupling portion to which the first insulating member is coupled;
An interlayer separation membrane separating a liquid delivery space formed under the depression and the depression; And
The first coupling portion includes a partition wall separating the depression,
The cavity is formed by the depression and the lower surface of the upper case,
The plasma generating apparatus, wherein the interlayer separation membrane includes a through hole connecting the depression and the liquid delivery space. The method of claim 11,
A battery mounted in the recess and capable of charging and discharging;
A high voltage power supply unit mounted on the depression and receiving DC voltage from the battery and supplying DC high voltage power;
A liquid storage unit mounted on the recessed portion and storing liquid to be vaporized; And
And a liquid delivery unit disposed in the through hole of the interlayer separation membrane and the liquid delivery space to provide the liquid from the liquid storage unit to the discharge space. The method of claim 1,
The probe is formed of a conductor, the plasma generating apparatus, characterized in that the surface of the probe is coated with gold or platinum. The method of claim 1,
The ground electrode is formed of a plastic material, and the surface of the ground electrode is coated with a conductor. A power electrode including a needle-shaped probe having a pointed tip and performing discharge by receiving a high voltage;
A cylindrical ground electrode disposed to surround the power electrode and including at least two vents on side surfaces to allow external air to circulate;
A cylindrical case including a cavity therein, coupled to the ground electrode, and formed of an insulator extending in a direction of a central axis of the ground electrode;
It is disposed on the open front surface of the ground electrode, is spaced apart in the extension direction of the probe, is disposed to face the power electrode, provides a discharge space for generating plasma, and is formed of an insulator including a through hole in a region facing the probe. Front case;
A liquid storage unit disposed in the cavity; And
And a liquid delivery unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space. A case including a cavity inside and formed of a non-conductive material;
A battery mounted in the cavity and capable of charging and discharging;
A high voltage power supply unit mounted in the cavity and receiving DC voltage from the battery to supply DC high voltage power;
A power electrode including a needle-shaped probe for generating plasma by receiving DC high voltage power from the high voltage power supply unit;
A ground electrode disposed around the power electrode and spaced apart from the power electrode;
A front case made of a non-conductive material that includes a through hole aligned with the probe, is disposed to face the power electrode, and is fixed to the ground electrode;
A liquid storage unit mounted on the cavity and storing liquid to be vaporized; And
And a liquid delivery unit for moving the liquid from the liquid storage unit to a discharge space between the power electrode and the front case. Providing a discharge space defined by a power electrode including a needle-shaped probe, a cylindrical ground electrode surrounding the power electrode, and a front case including a through hole and blocking the open front surface of the ground electrode;
Providing water vapor by vaporizing water in the discharge space;
Forming plasma in a discharge space by applying a DC high voltage to the power electrode while the front case is in contact with the human skin; And
And providing a convective flow to the discharge space through at least two vents formed in the ground electrode.

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