KR20160015894A - Plasma Generation Apparatus And Portable Plasma Cosmetic Apparatus - Google Patents

Abstract

Provided in the present invention are a plasma generation apparatus and a portable plasma beauty treatment device. The plasma generation apparatus comprises: a power electrode including a needle-shaped probe with a sharp end for receiving a high voltage and performing the discharge operation; a container-shaped grounding electrode including a ventilation hole on the side for enabling outside air to be circulated, arranged to cover the circumference of the power electrode; and a front case arranged on the opened front surface of the grounding electrode, arranged by being separated in the extension direction of the probe and facing the power electrode, and formed with an insulator including a penetration hole in the area facing the probe, for providing a discharge space which produces plasma.

Description

TECHNICAL FIELD [0001] The present invention relates to a plasma generating apparatus and a portable plasma beauty apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable plasma aesthetic device for eradicating bacteria in the skin or pores of a human body and removing organic matter and foreign matter.

The present invention relates to a portable plasma beauty apparatus, and more particularly, to a portable plasma beauty apparatus having a battery mounted therein with a miniaturized power source and ensuring portability in which plasma is generated without introducing a gas for catalyzing a plasma discharge .

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

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

The lowest energy state of matter is solid. The solid is energized gradually to become liquid, then to the gas. At this time, sufficient energy above the ionization energy is applied to the neutral gas, and ionization and recombination of electrons and ions can generate plasmas composed of electrons, ions, neutral atoms and molecules.

Electrically ionized conductive gas paper is called a "electrically ionized" because it maintains neutrality electrically while performing almost Brownian motion similar to free particles by mixing positive and negative charges (electrons) in the plasma.

Plasma has several criteria such as plasma density, electron temperature, degree of thermal equilibrium between species, generation method and application field, but it is most basic to classify it into density and electron temperature.

The local heat equilibrium (LTE) and the non-local thermal equilibrium (non-LTE) can be divided into the plasma by the degree of thermal equilibrium, and the term local heat equilibrium means that the temperature of all of the plasma particles is The same thermodynamic state in the local region.

Plasma for research and manufacturing processes is usually one of LTE or non-LTE plasma, and the latter is generally called a thermal plasma and the latter is called a cold plasma.

In the present invention, a low-temperature plasma is targeted and belongs to an atmospheric plasma in a low-temperature plasma.

Atmospheric pressure plasma is mainly used in the fields of surface modification, coating and environmental purification of materials. In recent years, related research has been expanded to apply biomedical applications and biomedical applications. Atmospheric plasma jet devices are being studied extensively in the field of biomedical research.

The electrode structure of the plasma jet is mostly a needle electrode structure of a needle shape, and various configuration methods are being studied depending on the power supply apparatus. An inert gas is mainly 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 having a small hole at the center of a small circular parallel plate has been introduced.

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

Plasma jets are often used for sterilization and sterilization purposes. Plasma containing oxygen radicals has been used for tooth whitening, pathogen destruction, and blood coagulation. Major issues in the utilization of this biomedical field are the miniaturization and control of the device, and the stability of the human body.

It is an important task to secure the stability against electric shock to be applied directly to living cells or human body. Therefore, in order to ensure stability, electrodes of high voltage should not come into direct contact with the sample and the human body. The driving voltage to be applied to the electrode should be lowered and the amount of plasma current should be controlled to a small value of 1 to 2 mA so that no electrical shock to the living body occurs. The minimum current that can be detected by the human body is about 1mA in a 60Hz commercial frequency alternating current for an adult man, and the sensing current increases with increasing frequency. In addition, the current feeling of pain is 7 ~ 8 mA, and higher currents are not only electrical but also thermally dangerous.

Disclosure of Invention Technical Problem [8] The present invention provides a plasma generating apparatus that provides a stable cosmetic effect while minimizing irritation to the skin.

A plasma generator according to an embodiment of the present invention includes: a power supply electrode including a probe having a sharp needle shape and performing a discharge by receiving a high voltage; A cylindrical ground electrode arranged to surround the power supply electrode and including a vent on a side surface for circulating outside air; And an insulator disposed in an open front face of the ground electrode and spaced apart from the proximal direction of the probe so as to face the power supply electrode and providing a discharge space for generating plasma and having a through hole in a region facing the probe, And a front case formed.

In one embodiment of the present invention, it may further comprise a tubular case including an internal cavity and formed of an insulator which is coupled to the ground electrode and extends in a central axis direction of the ground electrode.

In one embodiment of the present invention, the liquid storage portion disposed in the cavity; And a liquid transfer 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, the liquid transfer section may further include a liquid vaporizing section for spontaneously or vaporizing the liquid provided by the liquid transfer section.

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

In one embodiment of the present invention, the power electrode includes a rectangular parallelepiped-shaped power electrode base provided with a high voltage; A plurality of probes arranged symmetrically and mounted on one surface of the power supply electrode base; And a power electrode protrusion protruding from the power electrode base at an opposite surface opposite to the one surface of the power electrode base and fitting into the power electrode protrusion.

In one embodiment of the present invention, the ground electrode includes a body portion having a hollow rectangular tubular shape; A first vent hole formed on a side surface of the body portion; A second vent hole spaced apart from the first vent hole; And an auxiliary ground portion extending in the central axis direction from one side of the inner ground contact portion main body portion of the "U " shape disposed on the inner surface of the main body portion.

According to an embodiment of the present invention, the second ventilation hole may be formed by recessing a part of a side of a side where the front surface of the body portion and the side surface of the body portion are in contact with each other.

In one embodiment of the present invention, the front case includes a plate-shaped front case base; A through hole formed in alignment with the probe on the front case base; And a fitting part protruding from an arrangement plane of the front case base at an edge of the front case base.

According to an embodiment of the present invention, an insulating member may be disposed between the power electrode and the ground electrode so as to surround the power electrode. The insulating member exposing the probe and surrounding three sides of the rectangular parallelepiped-shaped power electrode base 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 antenna may further include a cylindrical case including an internal cavity and formed of an insulator which is coupled to the ground electrode and extends in a central axis direction of the ground electrode. A rectangular parallelepiped lower case coupled to the body of the ground electrode and including a depression therein; And an upper case coupled to the open top surface of the lower case and coupled with the auxiliary ground. Wherein the lower case has a rectangular parallelepiped shape and has a depression at an upper portion thereof; A U-shaped first insulating member disposed at one end of the lower case body and surrounding three sides of the rectangular parallelepiped-shaped power source electrode; A first coupling unit to which the first insulating member is coupled; An interlayer separator for separating the depression and the liquid transfer space formed below the depression; And a partition wall separating the depressed portion of the first coupling portion. The cavity may be formed by the depression and the lower surface of the upper case, and the interlayer separating film may include a through hole connecting the depression and the liquid transfer space.

In an embodiment of the present invention, a battery mounted on the depression and capable of charging / discharging; A high voltage power supply unit mounted on the depression and receiving DC voltage from the battery to supply DC high voltage power; A liquid storage portion mounted in the depression for storing a liquid to be vaporized; And a liquid transfer portion disposed in the through hole of the interlayer separator and the liquid transfer space to provide the liquid in the liquid storage portion to the discharge space.

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

A plasma generator according to an embodiment of the present invention includes: a power supply electrode including a probe having a sharp needle shape and performing a discharge by receiving a high voltage; A cylindrical ground electrode disposed to surround the power supply electrode and including at least two vents on a side thereof so that external air can circulate; A cylindrical case including a cavity inside and formed of an insulator coupled to the ground electrode and extending in the direction of the central axis of the ground electrode; And an insulator formed on an open front surface of the ground electrode and spaced apart from the probe in a direction opposite to the power supply electrode to provide a discharge space for generating plasma and including a through hole in a region facing the probe Front case; A liquid reservoir disposed in the cavity; And a liquid transfer unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space.

According to an embodiment of the present invention, there is provided a portable plasma beauty apparatus comprising: a case including a cavity and formed of a nonconductive material; A battery mounted on the cavity and chargeable and dischargeable; A high voltage power supply installed in the cavity and receiving DC voltage from the battery to supply DC high voltage power; A power supply electrode including a needle-shaped probe for generating a plasma by receiving DC high voltage power from the high voltage power supply unit; A ground electrode disposed around the power supply electrode and spaced apart from the power supply electrode; A front case including a through hole formed in alignment with the probe and disposed opposite to the power supply electrode and fixed to the ground electrode; A liquid storage portion mounted to the cavity and storing a liquid to be vaporized; And a liquid transfer unit for transferring the liquid in the liquid storage unit to a discharge space between the power supply electrode and the front case.

A portable plasma beauty treatment method according to an embodiment of the present invention includes a power supply electrode including a needle-like probe, a tubular ground electrode surrounding the power supply electrode, and a ground electrode covering the open front surface of the ground electrode, Providing a discharge space defined by the front case; Vaporizing water in the discharge space to provide water vapor; Forming a plasma in the discharge space by applying a DC high voltage to the power electrode in a state where the front case is in contact with the skin of the human body; And providing a convective flow in the discharge space through at least two vents formed in the ground electrode.

In the present invention, the plasma is generated without gas injection, so that it is convenient to carry and easy to use, and it is effective in terms of cost since the gas need not be replaced.

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 generator of FIG. 2A, with the front case removed.
3 is an exploded perspective view of the plasma generating apparatus of FIG.
Fig. 4 is a perspective view showing the ground electrode of Fig. 3. Fig.
5 is a perspective view showing the lower case of Fig.
6 is a cross-sectional view taken along the line I-I 'in 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 plume formed by the operation of the plasma generating apparatus according to an embodiment of the present invention.

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

There is provided a plasma cosmetic device capable of generating stable outside air and convection in a discharge space without using a catalyst gas according to an embodiment of the present invention. Particularly, oxygen, hydrogen, water, nitrogen, etc. contained in air react to generate plasma. In particular, the amount of moisture can stabilize the plasma discharge and generate an OH radical (hydroxyl group). OH radicals can perform sterilization, deodorization.

If moisture is continuously supplied to the closed space, the moisture can be liquefied into the liquid without vaporization any longer when the saturated water vapor pressure is reached. Therefore, it can play a critical role in the discharge structure. Therefore, in a situation where moisture is supplied, convection of air to the sealed discharge space is required.

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

Further, when atmospheric pressure DC discharge occurs directly between the power supply electrode and a human body operating as a ground, a current of about 1 mA or more may flow to the skin. As a result, the user feels pain and can provide damage to the skin.

According to one embodiment of the present invention, in the case of performing atmospheric pressure DC discharge, the skin is irradiated with radicals such as OH radicals (hydroxyl groups) through the through holes of the front case while suppressing the current flowing between the power source electrode and the skin to about 1 mA or less Can be supplied.

 Hereinafter, preferred 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 but may be embodied in other forms. Rather, the embodiments disclosed herein are being provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the components have been exaggerated for clarity. Like numbers refer to like elements throughout the specification.

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

Referring to FIG. 1, a plasma generator 100 includes a power electrode 130, a ground electrode 120, and a front case 110, and performs a DC glow discharge at atmospheric pressure. The power supply electrode 120 includes a needle-shaped probe 132 having a sharp end and performs a discharge by receiving a high voltage. The ground electrode 120 is disposed so as to surround the power supply electrode 130 and has ventilation openings 121 and 122 on the side thereof for circulating outside air. The front case 110 is disposed on the open front face of the ground electrode 120 and spaced apart from the probe 132 in the direction of extension of the probe 132 to face the power electrode 130 and provide a discharge space for generating plasma And an insulator including a through hole 112 in a region facing the probe 132.

The power supply electrode 130 may include a needle-like probe 132 and a power supply electrode base 134. The power supply electrode base 134 may have a polygonal columnar shape or a circular columnar shape. The power supply electrode base 134 can receive a high voltage of several kV from the high voltage power supply unit 154. The probe 132 may be more than one. The probe 132 may be made of a conductive material such as copper, gold, silver, iron, or tungsten. The probe 132 may have a diameter ranging from a few 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 can suppress ozone generation and inhibit the oxidation of the probe 132. The probe 132 may be disposed symmetrically. The probe 132 may be coupled to the power supply electrode base 134 through a screw connection. The probe 132 may protrude from the power supply 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 is disposed to surround the power supply electrode base 134 to prevent direct contact with the ground electrode 120. The insulating member 140 may have a toroidal shape having a rectangular cross section. The insulating member 140 may be plastic, acrylic, or resin. Preferably, the insulating member may be 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 of an insulating material through a conductive coating. The ground electrode 120 may be a toroidal shape having a rectangular cross section or a rectangular tubular shape.

The ground electrode 120 may be grounded by contact of the user's hand. Accordingly, a discharge can start between the probe 132 of the power supply electrode and the ground electrode 120. The discharge generates a plasma, and the plasma includes radicals and ions. Thus, the resulting radical can sterilize the surface of the skin. When the user's skin approaches the front case 110 in a state where the discharge is started, the lyric 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 vent hole 121 and a second vent hole 122 on a cylindrical side surface. The first vent hole 121 may be disposed adjacent to the power source electrode 130 and the second vent hole 122 may be disposed adjacent to the front case 110. The first vent 121 functions as an intake port, and the second vent 122 functions as an exhaust. By the plasma discharge, an ion wind is generated, and convection can be induced. The outside air flows through the first vent 121 and can form radicals through discharging. The radicals are provided to the skin, perform sterilization or the like, and can be exhausted through the second vent hole (122).

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

The front case 110 may be inserted into and engaged with an open side of the ground electrode 120. The front case 110 closes the skin of the human body and uses a nonconductive material having no irritation when it comes into contact with the skin. The front case 110 can suppress arc discharge between the human skin and the power supply electrode 130. The front case 110 is preferably made of silicone resin or ceramic. The through hole 112 of the front case 110 is preferably disposed to face the probe 132. Accordingly, the ion wind can provide a radical to the skin behind the through hole 112 to perform an action such as sterilization.

The case 160 may be fixedly coupled with the upper ground electrode 120. The case 160 is formed of an insulator, and may be a plastic material or a resin. The case 160 may include a cavity 161 therein. The case 160 can be continuously connected to the ground electrode 120 without having a jaw. When the ground electrode 120 has a rectangular tube shape, the case 160 may have a rectangular tube 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 separated into an upper case 164 and a lower case 162. The upper case 164 may be a cover of the lower case 162. A battery, a high-voltage power supply 154, and a liquid reservoir may be disposed inside the cavity.

The battery 152 can be charged with power supplied 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 source terminal.

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

The liquid storage portion 156 is a tank for storing liquid. The liquid reservoir 156 may store water. The liquid reservoir 156 may be connected to a pipe from the outside to receive the liquid. The liquid may be water.

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

The liquid vaporization portion 174 may vaporize the liquid transferred by the liquid transfer portion 170. The liquid vaporization unit 174 may include an ultrasonic vibrator. The ultrasonic vibrator may be a piezoelectric element. The ultrasonic vibrator can vibrate 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 generator of FIG. 2A, with the front case removed.

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

Fig. 4 is a perspective view showing the ground electrode of Fig. 3. Fig.

5 is a perspective view showing the lower case of Fig.

6 is a cross-sectional view taken along the line I-I 'in FIG. 2A.

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

2 to 7, the plasma generator 200 includes a power supply electrode 130 including a probe tip 132 having a sharp tip shape and performing a discharge by receiving a high voltage, a power supply electrode 130, And a cylindrical ground electrode 120 disposed on the open front side of the ground electrode 120 and including a vent hole 121 and 122 on the side thereof for circulating external air, And a front case 110 which is disposed opposite to the power supply electrode 130 and which is spaced apart from the power supply electrode 130 and is formed of an insulator including a through hole in a region facing the probe to provide a discharge space for generating plasma .

The power supply electrode 130 includes a rectangular parallelepiped shaped power supply electrode base 134 to which a high voltage is applied, a plurality of probes 132 arranged symmetrically and mounted on one surface of the power supply electrode base, And a power electrode protrusion 136 protruding from the power electrode base 134 at the other side opposite to the one side of the power electrode base 134 to fit into the power electrode base 134.

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

The probe 132 may be formed of a conductor and extend in the 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 inhibits oxidation of tungsten and can inhibit excessive formation of ozone.

The ground electrode 120 includes a body portion 125 having a hollow rectangular tube shape, a first vent 121 formed on a side of the body 125, a second vent 121 formed on the side of the body 125, U-shaped inner ground portion 123 disposed on the inner surface of the body portion 125 and an auxiliary ground portion 123 extending in the central axis direction from one side of the body portion 125. [ (Not shown).

The body portion 125 is formed in a rectangular tube shape, and an inner ground portion 123 having a "U" shape is disposed at an inner central portion. The inner grounding part 123 may be disposed along the inner surface of the body part and may fix three sides of the insulating members 241 and 262 surrounding the power supply electrode 130. One end of the liquid transfer part 170 may be arranged to surround the insulating member 241 together with the inner ground part 123. [

 The first ventilation hole 121 may be disposed adjacent to the inner grounding portion 123 and may extend through the body portion 125. The first vent holes 121 may be formed on each side. Accordingly, the first vent 121 may have a slit shape. The length of the slit may be substantially the same as the distance between the probes. The first vent 121 may act as an inlet when ion wind is generated.

The second ventilation holes 122 may be spaced apart from the first ventilation holes 121 in the z-axis direction. The second ventilation hole 122 may be disposed at a distal end of the body 125. Therefore, a depression may be formed at a portion where one surface of the front case 110 and the body 125 are coupled to each other, and the depression may provide the second ventilation hole 122. The size of the second vent hole 122 may be the same as the size of the first vent hole 121. The second ventilation hole 122 may be formed by a part of the side of the side where the front surface of the body part 125 and the side surface of the body part 125 are in contact with each other.

The auxiliary ground 124 may extend in the z-axis direction on the upper surface of the body portion 124. The auxiliary ground unit 124 may be provided so that the user's finger can easily touch. The auxiliary ground 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 aligned with the probe 132 on the front case base 116, And a fitting portion 114 formed to protrude from an arrangement plane of the front case base 116 at an edge.

The front case base 116 may have a rectangular plate shape and a through hole 112 symmetrically disposed at a predetermined interval may be disposed in a central portion of the front case base 116. The front case 110 may be a ceramic or a silicone resin as an insulator. The number of the through holes 112 may be four. The through-hole 112 may be aligned in the z-axis direction of the probe. The fitting portion 114 may protrude in the z-axis direction at a corner of the front case base 116.

The case 240, 260 is cylindrical in shape including an internal cavity, and connected to the ground electrode 120 and extending in the direction of the central axis of the ground electrode 120.

The case 240 has a rectangular parallelepiped lower case 240 coupled to the body of the ground electrode 120 and including a depression 246 therein, And an upper case (260) coupled to the auxiliary ground (124) and coupled to the auxiliary ground (124). The upper case 260 operates as a cover of the lower case 240.

The lower case 240 includes a lower case body 249 having a rectangular parallelepiped shape and a depression at an upper portion thereof, and three side faces of the rectangular parallelepiped power electrode 130 disposed at one end of the lower case body 241 A first engaging portion 244 engaging with the first insulative member 241, a second engaging portion 244 engaging with the depressed portion 246 and a liquid transfer space 244 formed in a lower portion of the depressed portion, An interlayer separator 248 for separating the first engaging portion 245a from the first engaging portion 244 and a partition wall 247 separating the first engaging portion 244 and the depression 246 from each other. The cavity may be formed by the depression 246 and the lower surface of the upper case 260. The interlayer separator 248 may include a through hole 245 connecting the depression 246 and the liquid transfer space 245a.

 The lower case body 240 has a rectangular parallelepiped shape extending in the z-axis direction. A depression 246 is formed on the upper surface of the lower case body 249. The depressed portion 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 be formed in a U-shape to enclose the power supply electrode base 134 on both sides and the lower surface. 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 portion 244 may be disposed to support the first insulation member 241. The first coupling portion 244 may be continuously connected to the lower case body 249. The first insulating member 241 may be disposed so as to protrude in the negative z-axis direction within the first coupling portion 244.

 The partition wall 247 can separate the first engaging portion 244 and the depression 246 from each other. The barrier rib 247 may be spaced apart from the first insulating member 241 by a predetermined distance. The power electrode protrusion 136 may be inserted into a space between the barrier rib 247 and the first insulating member 241. The partition wall 247 may include a depression 243 for electrical connection.

The interlayer separator 248 may form a lower surface of the depression 246. The interlayer separator 248 may form a liquid transfer space below the interlayer separator 248. In the liquid transfer space 245a, the liquid transfer portion 170 may be disposed. The interlayer separator 248 includes a through hole 245 through which the liquid transfer part 170 contacts the liquid storage part 156 to be supplied with the liquid.

The upper case 260 may include a second insulating member 262 and an upper case body 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 266 in contact with the second insulating member 262. The auxiliary electrode unit 124 may be disposed in the upper case groove 264. The upper surface of the auxiliary electrode unit 124 and the upper surface of the upper case body 266 may be flush with each other.

The lower surface of the second insulating member 262 may contact the upper surface of the power supply electrode base 134. The upper surface of the second insulating member 262 may protrude in the y-axis direction from the upper surface of the second insulating member 262 as it proceeds in the z-axis direction. The upper surface of the second insulating member 262 may contact the inner ground portion 123.

Insulating members 262 and 241 may be disposed between the power supply electrode 130 and the ground electrode 120 and surround the power supply electrode 130. The insulating member (262, 241) includes a first insulating member (241) that exposes the probe and surrounds three sides of the rectangular parallelepiped-shaped power electrode base of the power electrode and exposes an upper surface of the power electrode base (134) And 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 is formed of a plastic material, and the surface of the ground electrode 120 may be coated with a conductor.

The portable plasma beauty treatment method according to an embodiment of the present invention includes a power supply electrode 130 including a needle-like probe 132, a cylindrical ground electrode 120 surrounding the power supply electrode 130, Providing a discharge space (101) defined by a front case (110) covering the open front side of the electrode (120) and including a through hole (112); Vaporizing water in the discharge space (101) to provide water vapor; Forming a plasma in the discharge space (101) by applying a DC high voltage to the power electrode in a state where the front case (110) is in contact with the skin of the human body; And at least two vent holes (121, 122) formed in the ground electrode (120) to provide a convective flow in the discharge space.

The water stored in the cavity 161 inside the case 160 is transferred to the discharge space 101 through the liquid transfer portion 170. The delivered liquid is vaporized to provide a gas for plasma generation. In addition, the ventilation holes 121 and 122 formed in the ground electrode 120 provide a convection current to the discharge space 101 to maintain a stable discharge and to suppress liquid liquefaction. The plasma generates hydroxyl groups, and the generated hydroxyl groups are provided to the skin of the human body by ion wind and diffusion, and can perform a sterilizing action.

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

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And all of the various forms of embodiments that can be practiced without departing from the technical spirit.

100: plasma generator 110: front case
120: ground electrode 130: power electrode
140: Insulation member 152: Battery
154: high-voltage power supply unit 156: liquid storage unit
160: Case 170:

Claims (17)

A power supply electrode including a probe having a sharp tip shape and performing discharge by receiving a high voltage;
A cylindrical ground electrode arranged to surround the power supply electrode and including a vent on a side surface for circulating outside air; And
And an insulator formed on the open front face of the ground electrode and spaced apart from the probe in a direction opposite to the power supply electrode to provide a discharge space for generating plasma and including a through hole in a region facing the probe And a front case. The method according to claim 1,
Further comprising a cylindrical case including a cavity inside and formed of an insulator which is coupled to the ground electrode and extends in a central axis direction of the ground electrode. 3. The method of claim 2,
A liquid reservoir disposed in the cavity; And
Further comprising a liquid transfer unit for vaporizing the liquid after moving the liquid stored in the liquid storage unit to the discharge space. The method of claim 3,
Further comprising a vaporizing section for spontaneously or vaporizing the liquid provided by the liquid transfer section. The method of claim 3,
A battery mounted on the cavity and chargeable and dischargeable; And
And a high voltage power supply unit mounted on the cavity and receiving a DC voltage from the battery to supply DC high voltage power to the power supply electrode. The method according to claim 1,
Wherein the power electrode comprises:
A rectangular parallelepiped shaped power supply electrode base provided with a high voltage;
A plurality of probes arranged symmetrically and mounted on one surface of the power supply electrode base; And
And a power electrode protrusion protruding from the power electrode base at an opposite surface opposite to the one surface of the power electrode base to fit into the power electrode base. The method according to claim 1,
The ground electrode comprises:
A hollow rectangular tubular body portion;
A first vent hole formed on a side surface of the body portion;
A second vent hole spaced apart from the first vent hole; And
And an auxiliary ground portion extending in the central axis direction from one side of the inner ground contact portion main body of the inner ground portion of the "U" shape disposed on the inner side of the main body portion. 8. The method of claim 7,
Wherein the second vent hole is formed by a part of the side of the side where the front surface of the body part and the side surface of the body part are in contact with each other. The method according to claim 1,
The front case includes:
A plate-shaped front case base;
A through hole formed in alignment with the probe on the front case base; And
And a fitting portion protruding from an arrangement plane of the front case base at an edge of the front case base. The method according to claim 1,
Further comprising an insulating member disposed between the power electrode and the ground electrode so as to surround the power electrode,
Wherein the insulating member comprises:
A first insulating member exposing the probe and surrounding three sides of the rectangular parallelepiped-shaped power supply electrode base and exposing an upper surface of the power supply electrode base; And
And a second insulating member disposed on the exposed upper surface of the power electrode. 8. The method of claim 7,
Further comprising a cylindrical case including a cavity inside and formed of an insulator coupled to the ground electrode and extending in the direction of the central axis of the ground electrode,
Said case comprising:
A rectangular parallelepiped lower case coupled to the body of the ground electrode and including a depression therein; And
And an upper case coupled to an open top surface of the lower case and coupled with the auxiliary ground,
The lower case includes:
A lower case body portion having a rectangular parallelepiped shape and having a depression at an upper portion thereof;
A U-shaped first insulating member disposed at one end of the lower case body and surrounding three sides of the rectangular parallelepiped-shaped power source electrode;
A first coupling unit to which the first insulating member is coupled;
An interlayer separator for separating the depression and the liquid transfer space formed below the depression; And
And a partition wall separating the depressed portion of the first coupling portion,
Wherein the cavity is formed by the depression and the lower surface of the upper case,
Wherein the interlayer separating film includes a through hole connecting the depression and the liquid transfer space. 12. The method of claim 11,
A battery mounted on the depression and being chargeable and dischargeable;
A high voltage power supply unit mounted on the depression and receiving DC voltage from the battery to supply DC high voltage power;
A liquid storage portion mounted in the depression for storing a liquid to be vaporized; And
Further comprising a through hole in the interlayer separation film and a liquid transfer part disposed in the liquid transfer space and providing liquid in the liquid storage part to the discharge space. The method according to claim 1,
Wherein the probe is formed of a conductor and the surface of the probe is coated with gold or platinum. The method according to claim 1,
Wherein the ground electrode is formed of a plastic material, and the surface of the ground electrode is coated with a conductor. A power supply electrode including a probe having a sharp tip shape and performing discharge by receiving a high voltage;
A cylindrical ground electrode disposed to surround the power supply electrode and including at least two vents on a side thereof so that external air can circulate;
A cylindrical case including a cavity inside and formed of an insulator coupled to the ground electrode and extending in the direction of the central axis of the ground electrode;
And an insulator formed on the open front face of the ground electrode and spaced apart from the probe in a direction opposite to the power supply electrode to provide a discharge space for generating plasma and including a through hole in a region facing the probe Front case;
A liquid reservoir disposed in the cavity; And
And a liquid transfer unit for transferring the liquid stored in the liquid storage unit to the discharge space and then vaporizing the liquid. A case formed of a nonconductive material including a cavity inside;
A battery mounted on the cavity and chargeable and dischargeable;
A high voltage power supply installed in the cavity and receiving DC voltage from the battery to supply DC high voltage power;
A power supply electrode including a needle-shaped probe for generating a plasma by receiving DC high voltage power from the high voltage power supply unit;
A ground electrode disposed around the power supply electrode and spaced apart from the power supply electrode;
A front case including a through hole formed in alignment with the probe and disposed opposite to the power supply electrode and fixed to the ground electrode;
A liquid storage portion mounted to the cavity and storing a liquid to be vaporized; And
And a liquid transfer unit for transferring the liquid in the liquid storage unit to a discharge space between the power supply electrode and the front case. Providing a discharge space defined by a power supply electrode including a needle-shaped probe, a tubular ground electrode surrounding the power supply electrode, and a front case covering the open front surface of the ground electrode and including a through hole;
Vaporizing water in the discharge space to provide water vapor;
Forming a plasma in the discharge space by applying a DC high voltage to the power electrode in a state where the front case is in contact with the skin of the human body; And
And providing a convection current to the discharge space through at least two vents formed in the ground electrode.

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