TWM644934U - Handheld Plasma Generator - Google Patents

Abstract

A handheld plasma generator that adjusts a supply current to a driving current with specific electrical properties, voltage and working clock through a voltage and pulse adjustment component, and then generates a normal pressure low-temperature plasma through an electrode component. The electrode assembly has a dielectric material plate, a metal electrode layer and a power contact. The metal electrode layer is arranged in a sandwich plate of the dielectric material plate and is electrically connected to the voltage and pulse through the power contact. Adjusting the component, the driving current is transmitted to the metal electrode layer, which will generate a high-voltage induced electric field on the surface of the dielectric material plate to excite an atmospheric gas molecule, thereby generating the normal-pressure low-temperature plasma.

Description

Handheld plasma generator

The present invention relates to a handheld plasma generator, in particular to a handheld plasma generator that utilizes batteries, circuit design and dielectric materials to generate normal pressure and low-temperature plasma.

Plasma is the fourth state of matter. The substances in plasma have a diversity of particles. Under conditions of high electric field strength, high energy is provided to electrons in molecules. The excited electrons gain energy and break away from the binding force within the original atoms or molecules. Free electrons are formed, and the original atoms or molecules become charged ion states due to the loss of electrons. These free electrons, ions or molecules will continue to collide with each other, thereby carrying out complex physical and chemical reactions. Therefore, in addition to ions, plasma is also composed of There are also particles with different properties such as neutral particles, free electrons, and free radicals.

Artificial plasma generation methods can be classified according to various parameters when plasma is generated. Plasma can be divided into high-temperature plasma (HTP) and low-temperature plasma (LTP) by plasma temperature; plasma can be divided into high-pressure, normal pressure, low-pressure, etc. by gas pressure. Vacuum plasma; plasma can be divided into plasma jet, dielectric barrier discharge (DBD), corona discharge, and plasma torch by the structure of the equipment that generates plasma. (Plasma torch); Plasma can be divided into direct (Direct) and indirect (Indirect) plasma according to the surface treatment method of plasma; plasma can be divided into direct current (DC) and low frequency (KHz) by the type of power supply. ), intermediate frequency (MHz), radio frequency (13.6MHz), microwave (2.45GHz) plasma.

Plasma treatment of the surface of the target object can change the molecular structure or characteristics of the surface through physical and chemical reactions. It is used in industrial and medical applications in cleaning, surface modification, sputtering, sterilization, disinfection, cancer treatment, wound healing, skin regeneration, food and fruits. Applicability in various fields such as preservation.

Existing medical application plasma generation equipment requires power supply through a power cord during use, and consumes a large amount of power. Therefore, a larger space is required to install the power supply. In addition, some medical application plasma generation equipment requires plasma The production process requires special precious gas as the working gas, and the equipment is bulky and difficult to meet the requirements of handheld and portable equipment.

The main purpose of the present invention is to disclose a handheld plasma generator that can generate a high-voltage induction electric field to excite atmospheric gas molecules to generate normal-pressure low-temperature plasma.

In order to achieve the above purpose, the present invention provides a handheld plasma generator, which includes: a casing, a motherboard, a power supply component, a mode switch component, a voltage and pulse adjustment component, an electrode component and a conductive decoration article. The housing has an accommodating space and an active opening communicating with the accommodating space, and the motherboard is disposed in the accommodating space. The power supply component is disposed on the motherboard and provides a power supply current. The mode switch assembly has a mode switch and a switch circuit. The mode switch is connected to the switch circuit. The switch circuit is electrically connected to the motherboard. By turning the mode switch, the switch circuit can be toggled. A lever is provided to switch to an operating mode, or to choose whether to supply the power supply current. The voltage and clock adjustment component is disposed on the motherboard and adjusts the supply current to a driving current with specific electrical properties, voltage and operating clock according to the operating mode.

The electrode assembly has a dielectric material plate, a metal electrode layer and a power contact. The dielectric material plate has a first side plate, a second side plate and a sandwich plate. The sandwich plate is located between the first side plate and the Between the second side plates, the first side plate is provided with an electrode channel, and the electrode channel penetrates the first Side plate, the dielectric material plate is arranged in the accommodation space, and the second side plate is aligned with the action opening, the metal electrode layer is arranged in the sandwich plate, and the power contact is arranged in the electrode channel and is electrically conductive The metal electrode layer and the voltage and timing adjustment component are used to transfer the driving current to the metal electrode layer, and the driving current will generate a high-voltage induced electric field on the second side plate to excite an atmospheric gas adjacent to the second side plate. molecules to generate a normal pressure low-temperature plasma on one side of the second side plate. The conductive decorative strip has at least one grounding contact and is disposed on a hand-held surface on the housing. The grounding contact is electrically connected to the motherboard.

As mentioned above, the handheld plasma generator disclosed in the present invention can generate the normal pressure and low-temperature plasma at the action opening. The particles in the plasma are composed of active molecules with oxidizing ability, ions, free radicals, and excited free electrons. It has functions such as sterilization, surface modification, deodorization, and cleaning, so it is suitable for use in the medical field. Intact skin and superficial wounds are the best candidates for treatment. However, the scope of application is not limited to human skin treatment, but also includes skin or hair treatment of dogs, cats, cattle, sheep, chickens, ducks, geese and other livestock.

S: to be acted upon

P: normal pressure low temperature plasma

10: Shell

101:Handheld surface

11: Upper shell

111:Light guide opening

12:Lower shell

121:Function opening

13: Accommodation space

20: Motherboard

201:Ground contact

30: Power supply component

31: Rechargeable battery

40: Mode switch assembly

41: Mode switch

42: Switch circuit

421: Lever

50: Voltage and pulse adjustment components

51: Electrical adjustment circuit

52:Transformer

60:Electrode assembly

61: Dielectric material board

611: First side panel

612:Second side panel

613:Sandwich board

614:Electrode channel

62: Metal electrode layer

63:Power contact

64:High voltage power cord

641:Solder

70:Conductive decorative strip

71:Ground contact

80:Charging components

81:Charging connector

82:Charging protection circuit

90: Indicator light component

91:LED die

92:Light guide column

Figure 1 is a front view of the structure of the new handheld plasma generator.

Figure 2 is an exploded view of the structure of this new handheld plasma generator.

Figure 3 is a bottom view of the structure of the new handheld plasma generator.

Figure 4 is an exploded view of the structure of the new electrode assembly.

Figure 5 is a structural diagram of the new electrode assembly.

Figure 6 is a schematic diagram of the new normal pressure low-temperature plasma generation.

The detailed description and technical content of the new model are as follows with reference to the drawings: Please refer to Figures 1, 2 and 3. The new model provides a handheld plasma generator, which includes: a housing 10, a The main board 20 , a power supply component 30 , a mode switch component 40 , a voltage and pulse adjustment component 50 , an electrode component 60 and a conductive decorative strip 70 .

Among them, in one embodiment, the housing 10 has an upper housing 11, a lower housing 12 and an accommodating space 13. The accommodating space 13 is covered by the upper housing 11 and the lower housing 12. The lower housing 11 The housing 12 has an active opening 121 communicating with the accommodating space 13 .

The motherboard 20 is disposed in the accommodating space 13 and is clamped and fixed by the upper case 11 and the lower case 12 .

The power supply component 30 is disposed on the motherboard 20 and provides a power supply current. In one embodiment, the present invention further includes a charging component 80. The charging component 80 has a charging connector 81 and a charging protection circuit 82. The charging connector 81 can use a USB-A, USB-B or USB-C interface ( (including miniUSB and microUSB interface) as the charging interface. Preferably, the interface of the charging connector 81 uses a microUSB interface. In addition, the charging protection circuit 82 is not limited to being built on the motherboard 20 and can also exist in an independent form.

The power supply component 30 is a rechargeable battery 31, the charging connector 81 is electrically connected to a commercial power supply (not shown), and the charging protection circuit 82 is electrically connected to the charging connector 81 and the rechargeable battery 31 respectively. Preferably, the charging voltage range is DC 3.5~4.5V, the battery capacity is 1000~4000mAh, and the rated output current is 100~1000mAh. The power supply component 30 is not limited to using lithium batteries, and can also use nickel metal hydride, nickel cadmium, carbon zinc, lithium polymer, alkaline, alkaline batteries, etc.

The city power is stepped down to a voltage range of 3.5~13.5V by an external transformer (not shown in the figure) and a limited current range of 0.8~3.5A. It is input to the charging protection circuit 82 through the charging connector 81, and is then stepped down, stabilized, and Limit the current, and then provide DC power to the rechargeable battery 31 for charging, and cut off the power after full charging.

The mode switch assembly 40 has a mode switch 41 and a switch circuit 42. The mode switch 41 is connected to the switch circuit 42. The switch circuit 42 is electrically connected to the motherboard 20. By flipping the mode switch 41 A lever 421 on the switch circuit 42 can be toggled to select an operating mode or whether to supply the power supply current.

The voltage and clock adjustment component 50 is disposed on the motherboard 20 and adjusts the supply current to a driving current with specific electrical properties, voltage and operating clock according to the operating mode. In more detail, the voltage and clock adjustment component 50 includes an electrical adjustment circuit 51 that adjusts electrical properties, voltage, current, and operating clock, and a transformer 52 that performs frequency oscillation and voltage boosting, wherein the rechargeable battery 31 outputs a voltage The range is DC 3.5~4.5V, the rated output current is 100~1000mAh, and after passing through the electrical adjustment circuit 51, the working clock range output by the electrical adjustment circuit 51 is Ton=5~200ms, Toff=5~100ms , the working clock ratio Ton: Toff=1.0: 0.3~5.0, the power supply voltage range is 2.0~13.5V. The power supply current is first adjusted by the electrical adjustment circuit 51 in terms of electrical characteristics, voltage, and operating clock, and then is frequency oscillated and boosted by the transformer 52 to adjust the driving current to the clock, frequency, and high voltage. In one embodiment, the driving current is high-voltage alternating current, the oscillation frequency is 10~200kHz, and the output voltage is 1~10kV.

Please refer to Figures 4 and 5 again. The electrode assembly 60 has a dielectric material plate 61, a metal electrode layer 62 and a power contact 63. The dielectric material plate 61 has a first side plate 611, A second side plate 612 and a sandwich plate 613. The sandwich plate 613 is located between the first side plate 611 and the second side plate 612. The first side plate 611 is provided with an electrode channel 614, and the electrode channel 614 penetrates the first side plate. 611, the dielectric material plate 61 is disposed in the accommodating space 13, and the second side plate 612 is aligned with the action opening 121, and the metal electrode layer 62 is disposed in the sandwich plate 613.

In one embodiment, the material of the dielectric material plate 61 is ceramic, glass, plastic, etc., preferably ceramic, and the metal electrode layer 62 is silver. The dielectric material plate 61 and the metal electrode layer 62 are made of silver. The metal electrode layer 62 is disposed in the sandwich plate 613 using low-temperature co-firing technology. Ceramic sheets, glass sheets, plastic Film, etc. are all a type of dielectric material (Dielectric). When a high enough AC electric field is provided to the dielectric material, the positive charges in the dielectric material will migrate very close to the direction of the electric field, while the negative charges will migrate extremely close to the opposite direction. Migrating at a short distance, the dielectric at the far end of the metal-dielectric material contact surface will produce a shielding discharge effect. Nearby atmospheric molecules, single special gases, and mixed gas molecules, some or a certain proportion of the molecules will reach the required level to be excited. Collapse voltage, and transition from the ground state to the excited state, accompanied by the generation of high-voltage microcurrent microdischarge filaments and plasma.

In one embodiment, the metal electrode layer 62 is edge-sealed with the dielectric material plate 61 to prevent the metal electrode layer 62 from contacting the atmosphere or other gases. If the metal electrode layer 62 is not in close contact with the dielectric material plate 61 and is exposed to the atmosphere or other gases during the discharge process, micro-discharge phenomena and plasma will be generated on the exposed surface of the metal electrode layer 62. The presence of ozone, strong oxidizing ions, molecules or other particles in the slurry will cause severe oxidation reactions on the metal electrode layer 62 , causing corrosion and corrosion. What's more, current breakdown of the metal electrode layer 62 will occur.

In one embodiment, the thickness of the first side plate 611 is 0.1~10mm, the thickness of the second side plate 612 is 0.02~10mm, and the thickness of the metal electrode layer 62 is 0.001~10mm. And preferably, the thickness of the second side plate 612 is smaller than the thickness of the first side plate 611 .

The power contact 63 is disposed in the electrode channel 614 and is electrically connected to the metal electrode layer 62. The power contact 63 can also be electrically connected to the voltage and pulse adjustment component 50 through a high-voltage power line 64 to transfer the driving current. transferred to the metal electrode layer 62 . And the high-voltage power line 64 is electrically connected to the power contact 63 through a solder 641 .

Please also refer to FIG. 6 . The driving current will generate a high-voltage induced electric field on the second side plate 612 to excite an atmospheric gas molecule close to the second side plate 612 to generate an electric field on one side of the second side plate 612 . A normal pressure low-temperature plasma P. The normal pressure low-temperature plasma P has plasma characteristics of low temperature, normal pressure, atmosphere, dielectric discharge, indirect form, and low frequency. When the second side plate 612 is adjacent to an object S to be acted upon, such as When using human skin, if the object S is not electrically grounded to the ground, the surface charges of the object S accumulate to generate a local electric field, which will greatly affect the plasma generation efficiency. Therefore, as shown in Figure 2, the conductive The decorative strip 70 has at least one ground contact 71 and the conductive decorative strip 70 is disposed on a hand-held surface 101 on the housing 10 . The ground contact 71 is electrically connected to a ground contact 201 of the motherboard 20 . In practice, the material of the conductive decorative strip 70 is any one of metal with high conductivity, graphite, plastic with metal coating or graphite coating, and the conductive decorative strip 70 can be disposed on the upper case 11, between the lower housing 12 and is clamped up and down by the upper housing 11 and the lower housing 12 to be fixed. When the object S is human skin, as long as you hold the casing 10, it will contact the conductive decorative strip 70, and then the surface charge accumulated on the object S can be guided to the ground contact of the motherboard 20 201, which can avoid affecting the plasma generation efficiency.

In one embodiment, as shown in Figure 2, the present invention further includes an indicator light component 90. The indicator light component 90 includes a plurality of LED chips 91 and a plurality of light guide posts 92. The plurality of light guide posts 92 correspond to the plurality of LED chips. Chips 91 are provided, the plurality of LED chips 91 are provided on the motherboard 20, the plurality of light guide pillars 92 are fixed on the upper casing 11 (the casing 10), and the upper casing 11 (the casing 10) has a plurality of The light guide openings 111 expose the plurality of light guide columns 92, which can be used as indicator lights to let the user know the current operating mode.

To sum up, the features of this new model include at least:

1. It is a handheld plasma generator that can generate normal pressure and low-temperature plasma without being connected to the mains. It meets the needs of portable use and can treat intact skin and superficial wounds.

2. The metal electrode layer is covered by the dielectric material plate, which can prevent plasma from being generated in the metal electrode layer, and the metal electrode layer will not cause serious oxidation reaction and corrosion.

3. The thickness of the second side plate is smaller than the thickness of the first side plate, which can effectively ensure that the normal pressure low-temperature plasma is generated on one side of the second side plate and prevent the first side plate from generating unexpected plasma.

10: Shell

101:Handheld surface

11: Upper shell

111:Light guide opening

12:Lower shell

121:Function opening

13: Accommodation space

20: Motherboard

201:Ground contact

30: Power supply component

31: Rechargeable battery

40: Mode switch assembly

41: Mode switch

42: Switch circuit

421: Lever

50: Voltage and pulse adjustment components

51: Electrical adjustment circuit

52:Transformer

60:Electrode assembly

61: Dielectric material board

63:Power contact

70:Conductive decorative strip

71:Ground contact

80:Charging components

81:Charging connector

82:Charging protection circuit

90: Indicator light component

91:LED die

92:Light guide column

Claims (10)

A handheld plasma generator includes: a shell having an accommodating space and an active opening communicating with the accommodating space; a motherboard disposed in the accommodating space; and a power supply component , the power supply component is arranged on the motherboard and provides a power supply current; a mode switch component, the mode switch component has a mode switch and a switch circuit, the mode switch is connected to the switch circuit, and the switch circuit Electrically connected to the motherboard, by flipping the mode switch, a lever on the switch circuit can be toggled to select an operating mode or whether to supply the power supply current; a voltage and pulse adjustment component , the voltage and clock adjustment component is disposed on the motherboard and adjusts the supply current to a driving current with specific electrical properties, voltage and working clock according to the operation mode; an electrode assembly, the electrode assembly has a dielectric material plate, a metal electrode layer and a power contact. The dielectric material plate has a first side plate, a second side plate and a sandwich plate between the first side plate and the second side plate. The first side plate An electrode channel is provided, the electrode channel penetrates the first side plate, the dielectric material plate is arranged in the accommodation space, and the second side plate is aligned with the action opening, the metal electrode layer is arranged in the sandwich plate, the The power contact is disposed in the electrode channel and electrically connects the metal electrode layer and the voltage and timing adjustment component to transfer the driving current to the metal electrode layer, and the driving current will generate a high voltage induction on the second side plate. The electric field excites an atmospheric gas molecule close to the second side plate to generate a normal pressure low-temperature plasma on one side of the second side plate; and a conductive decorative strip, the conductive decorative strip has at least one grounding contact and the conductive decorative strip The decorative strip is disposed on a hand-held surface of the housing, and the ground contact is electrically connected to the motherboard. The handheld plasma generator as described in claim 1, wherein the voltage and pulse adjustment component includes an electrical adjustment circuit for adjusting electrical properties, voltage, current, and working clock and a frequency vibration The power supply current is oscillated and boosted by a transformer. The power supply current is first adjusted by the electrical adjustment circuit to adjust the electrical properties, voltage, and operating clock, and then is adjusted to the driving current by the transformer for frequency oscillation and voltage boosting. The handheld plasma generator as described in claim 2, wherein the working clock range output by the electrical adjustment circuit is Ton=5~200ms, Toff=5~100ms, and the working clock ratio Ton:Toff=1.0:0.3 ~5.0, the supply voltage range is 2.0~13.5V. The handheld plasma generator as described in claim 1, wherein the driving current is high-voltage alternating current, the oscillation frequency is 10~200kHz, and the output voltage is 1~10kV. The handheld plasma generator as claimed in claim 1, further comprising a charging component having a charging connector and a charging protection circuit, and the power supply component is a rechargeable battery, and the charging connector is electrically connected to a The charging protection circuit is electrically connected to the charging connector and the rechargeable battery respectively. The handheld plasma generator as described in claim 1 further includes an indicator light component, the indicator light component includes a plurality of LED chips and a plurality of light guide posts corresponding to the plurality of LED chips. The plurality of LED chips The particles are arranged on the motherboard, the plurality of light guide columns are fixed on the housing, and the housing has a plurality of light guide openings exposing the plurality of light guide columns. The handheld plasma generator as claimed in claim 1, wherein the material of the conductive decorative strip is any one of highly conductive metal, graphite, and plastic with metal coating or graphite coating. The handheld plasma generator of claim 1, wherein the material of the dielectric material plate is ceramic, the metal electrode layer is silver, and the dielectric material plate and the metal electrode layer are made by low-temperature co-firing technology. The metal electrode layer is arranged in the sandwich plate. The handheld plasma generator as described in claim 1, wherein the thickness of the first side plate is 0.1~10mm, the thickness of the second side plate is 0.02~10mm, and the thickness of the metal electrode layer is 0.001~10mm. The handheld plasma generator of claim 1, wherein the thickness of the second side plate is smaller than the thickness of the first side plate.

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