CN218450651U - Low-temperature plasma sterilizing device - Google Patents
Low-temperature plasma sterilizing device Download PDFInfo
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- CN218450651U CN218450651U CN202222535461.1U CN202222535461U CN218450651U CN 218450651 U CN218450651 U CN 218450651U CN 202222535461 U CN202222535461 U CN 202222535461U CN 218450651 U CN218450651 U CN 218450651U
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Abstract
The utility model relates to a low-temperature plasma killing device, which comprises a high-voltage excitation power supply, a low-temperature plasma generator, an insulating shell and a handle; the high-voltage excitation power supply comprises a power supply battery and a high-voltage generator; the low-temperature plasma generator comprises a linear electrode, a mesh electrode and a dielectric plate, wherein the linear electrode is tightly attached to one side of the dielectric plate, and the mesh electrode is tightly attached to the other side of the dielectric plate; the insulating shell is internally provided with a partition board which is an insulating layer, the bottom of the insulating shell is provided with a plasma release window, and the handle is fixedly arranged on one side of the insulating shell; the power supply battery and the high-voltage generator are arranged in the insulating shell, positioned above the partition plate and supported by the partition plate, the low-temperature plasma generator is arranged in the insulating shell, positioned below the partition plate and spaced between the upper surface of the low-temperature plasma generator and the lower surface of the partition plate.
Description
Technical Field
The utility model relates to a low temperature plasma disappears and kills device, in particular to portable low temperature plasma disappears and kills device belongs to plasma and produces and use technical field, concretely relates to even along Surface Dielectric Barrier Discharge (SDBD) low temperature plasma produces device in atmospheric pressure air.
Background
Along with the continuous improvement of economic environment and the living standard of people, the health consciousness of residents is continuously improved, and the industrial development of disinfection and sterilization products is pulled from the demand end. Particularly, the field of killing is increasingly emphasized since the outbreak of new crown epidemic situation. The traditional physical sterilization technology, such as ultraviolet ray, electrostatic adsorption and the like, has the defects of high cost, incomplete disinfection, dead corners and the like, and the traditional chemical sterilization technology has byproduct residues and is easy to cause ecological risks due to improper treatment. The low-temperature plasma contains a large amount of ions, electrons, free radicals, ultraviolet photons and chemical substances, and the active substances and microorganisms have complex physical and chemical reactions, so that various bacteria can be effectively killed. The low-temperature plasma sterilization technology is made out of a plurality of methods by the advantages of being green, rapid and efficient, and has wide application prospect in the field of disinfection and killing.
However, the existing low-temperature plasma generation technology generally requires conditions of high voltage, low pressure, inert gas and the like, and Dielectric Barrier Discharge (DBD) is used as a common low-temperature plasma generation means in atmospheric pressure air, and has the characteristics of relatively simple structure, high Discharge uniformity, mild Discharge and the like. However, the power supply required for generating plasma is special, the discharge conditions (voltage, frequency, etc.) are harsh, the existing plasma source can only be driven by a heavy voltage source, the operation is complex, the carrying is not easy, and the circuit implementation cost is high, so the plasma source is difficult to be applied to daily life. Therefore, how to realize stable dielectric barrier discharge while ensuring low cost, easy operation, and portability has been a major issue.
SUMMERY OF THE UTILITY MODEL
The technical solution problem of the utility model is that: the device is a portable low-temperature plasma sterilization device with a micro power technology and a Surface Dielectric Barrier Discharge (SDBD) structure integrated.
The technical solution of the utility model is that:
a low-temperature plasma killing device comprises a high-voltage excitation power supply, a low-temperature plasma generator, a handle and an insulating shell;
the high-voltage excitation power supply comprises a power supply battery and a high-voltage generator; the power supply battery is provided with a switch and a battery shell;
the low-temperature plasma generator is of an SDBD structure and comprises a linear electrode (tungsten wire), a mesh electrode (metal mesh) and a dielectric plate (ceramic plate), wherein the linear electrode is tightly attached to one side of the dielectric plate, and the mesh electrode is tightly attached to the other side of the dielectric plate;
the plasma discharge device comprises an insulating shell, a handle, a plasma discharge window and a plasma discharge window, wherein the insulating shell is internally provided with a partition plate;
the power supply battery and the high-voltage generator are arranged in the insulating shell, positioned above the partition plate and supported by the partition plate, the low-temperature plasma generator is arranged in the insulating shell, positioned below the partition plate and provided with a gap between the upper surface of the low-temperature plasma generator and the lower surface of the partition plate, and the height of the gap is 4-6mm;
the power supply battery is connected with the high-voltage generator through a lead;
the high-voltage generator is connected with the low-temperature plasma generator through a lead.
The working process is as follows:
the switch on the power supply battery is turned on to enable the power supply battery to be in a power supply state, the power supply battery supplies power to the high-voltage generator, the high-voltage generator converts low-voltage direct current into high-voltage alternating current and outputs the high-voltage alternating current to the low-temperature plasma generator, the low-temperature plasma generator generates creeping discharge on the linear electrode after reaching breakdown voltage under the action of the high-voltage alternating current to generate low-temperature plasma, and the low-temperature plasma is released on the surface of an object to be processed through the plasma release window to kill the surface of the object to be processed.
The high-voltage generator comprises an inverter/resonance circuit and a transformer, can output low-voltage direct current into high-voltage alternating current, and lead-out wires are respectively connected to two ends of the low-temperature plasma generator;
the insulating shell is made of PVC, organic glass or polytetrafluoroethylene.
Advantageous effects
(1) And (3) integrating the micro power technology and the SDBD structure to obtain the portable low-temperature plasma killing device.
(2) The high-voltage excitation power supply and the low-temperature plasma generator are arranged in the insulating shell, and one side of the shell is provided with the handle, so that the safety during handheld discharge can be ensured.
(3) The device has the characteristics of low cost, small volume, simple operation, quick dynamic response, low power consumption and high efficiency.
(4) The device can generate stable and uniform dispersion discharge in atmospheric air, the gas temperature characteristic of the device slightly higher than room temperature does not need to consider the thermal influence on the surface of a treated object, and the device can be widely applied to killing of various specific scenes.
Drawings
FIG. 1 is a schematic diagram of the circuit connection of the killing device of the present invention;
fig. 2 is a schematic structural diagram of the plasma generator of the present invention;
FIG. 3 is a front view of the killing device of the present invention;
fig. 4 is a bottom view of the killing device of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in FIG. 1, the utility model provides a small power and discharge structure integrated device, its internal circuit includes high voltage excitation power, low temperature plasma generator 3. The high-voltage excitation power supply comprises a power supply battery 1 and a high-voltage generator 2; the power supply battery 1 is provided with a switch 4 and a battery case 5. The outgoing line of the battery case 5 is connected in parallel with the two input ends of the high voltage generator 2, and the outgoing line of the high voltage generator 2 is connected with the two ends of the plasma generator 3.
As shown in fig. 2, the plasma generator 3 is composed of a mesh electrode (metal mesh) 6, a linear electrode (tungsten wire) 7 and a dielectric plate (ceramic plate) 8, and the two electrodes are respectively closely attached to both sides of the ceramic dielectric plate 8. When the voltage applied between the metal mesh 6 and the tungsten wire electrode 7 is higher than the breakdown voltage, air is broken down, creeping discharge occurs at the tungsten wire electrode 7, and a stable low-temperature plasma layer is generated.
As shown in fig. 3, the low temperature plasma sterilizing apparatus includes a power supply battery 1, a high voltage generator 2, a low temperature plasma generator 3, a handle 13 and an insulating housing 9. The insulating shell 9 comprises a partition 12 inside, the partition 12 is an insulating layer, the bottom 10 of the insulating shell 9 is provided with a plasma discharge window 11, and a handle 13 is fixedly arranged on one side of the insulating shell 9. The power supply battery 1 and the high voltage generator 2 are arranged in the insulating shell 9, positioned above the partition plate 12 and supported by the partition plate 12, the low temperature plasma generator 3 is arranged in the insulating shell 9, positioned below the partition plate 12 and provided with a gap between the upper surface of the low temperature plasma generator 3 and the lower surface of the partition plate 12, and the height of the gap is 5mm.
As shown in fig. 4, the tungsten electrode 7 can be observed through the plasma discharge window 11 formed on the bottom 10 of the insulating housing 9, and the low-temperature plasma layer generated at the tungsten electrode 7 during discharge can be discharged on the surface of the object to be treated through the plasma discharge window 11, so as to kill the surface of the object to be treated.
The working process is as follows:
the switch 4 on the power supply battery 1 is turned on to enable the power supply battery 1 to be in a power supply state, the power supply battery 1 supplies power to the high-voltage generator 2, the high-voltage generator 2 converts low-voltage direct current into high-voltage alternating current and outputs the high-voltage alternating current to the low-temperature plasma generator 3, the low-temperature plasma generator 3 can puncture air after reaching a breakdown voltage under the action of the high-voltage alternating current, creeping discharge occurs at the tungsten wire electrode 7, and a stable low-temperature plasma layer is generated. The low-temperature plasma layer is released on the surface of the object to be processed through the plasma release window 11, and the surface of the object to be processed is killed. The high-voltage generator 2 comprises an inverter/resonance circuit and a transformer, can output low-voltage direct current into high-voltage alternating current, and lead-out wires are respectively connected to two ends of the low-temperature plasma generator;
the insulating shell 9 is made of organic glass.
The plasma generator comprises a battery 1, a high-voltage generator 2 and a plasma generator 3, wherein the battery 1 is arranged in a battery shell 5 with a switch button 4, an outgoing line of the battery shell 5 is connected with two input ends of the high-voltage generator 2 in parallel, and an outgoing line of the high-voltage generator 2 is connected with two ends of the plasma generator 3;
the plasma generator 3 is composed of a metal mesh 6, a tungsten wire electrode 7 and a ceramic dielectric plate 8, the two electrodes are respectively and closely attached to two sides of the ceramic dielectric plate 8, when the voltage applied between the metal mesh 6 and the tungsten wire electrode 7 is higher than the breakdown voltage, air can be broken down, creeping discharge occurs at the tungsten wire electrode 7, and a stable low-temperature plasma layer is generated.
When the voltage applied between the metal mesh 6 and the tungsten electrode 7 is higher than the breakdown voltage, air is broken down, creeping discharge occurs at the tungsten electrode 7, and a stable low-temperature plasma layer is generated. And when a switch button in a hole on the upper surface of the insulating shell is opened, the battery supplies power to the high-voltage generator, and the high-voltage generator inverts the direct current low voltage into alternating current high voltage and outputs the alternating current high voltage to the plasma generator. When the applied voltage between the mesh electrode and the linear electrode reaches the breakdown voltage, the discharge air gap breaks down, creeping discharge occurs at the linear electrode, and low-temperature plasma is generated. The plasma layer is in direct contact with the object to be sterilized through the plasma release window on the lower surface of the insulating shell, so that effective sterilization can be realized.
Claims (7)
1. A low temperature plasma killing device which is characterized in that:
the killing device comprises a high-voltage excitation power supply, a low-temperature plasma generator (3), an insulating shell (7) and a handle (8);
the high-voltage excitation power supply comprises a power supply battery (1) and a high-voltage generator (2);
the low-temperature plasma generator (3) comprises a linear electrode (4), a mesh electrode (5) and a dielectric plate (6), wherein the linear electrode (4) is tightly attached to one side of the dielectric plate (6), and the mesh electrode (5) is tightly attached to the other side of the dielectric plate (6);
the insulating shell (7) is internally provided with a partition board which is an insulating layer, the bottom of the insulating shell (7) is provided with a plasma release window, and the handle (8) is fixedly arranged on one side of the insulating shell (7);
the power supply battery (1) and the high-voltage generator (2) are arranged in the insulating shell (7), positioned above the partition plate and supported by the partition plate, the low-temperature plasma generator (3) is arranged in the insulating shell (7), positioned below the partition plate and provided with a gap between the upper surface of the low-temperature plasma generator (3) and the lower surface of the partition plate;
the power supply battery (1) is connected with the high voltage generator (2) through a lead;
the high-voltage generator (2) is connected with the low-temperature plasma generator (3) through a lead.
2. A low temperature plasma abatement device according to claim 1, wherein:
the height of the gap between the upper surface of the low-temperature plasma generator (3) and the lower surface of the partition board is 4-6mm.
3. A low temperature plasma abatement device according to claim 2, wherein:
the height of the gap between the upper surface of the low-temperature plasma generator (3) and the lower surface of the partition board is 5mm.
4. A low temperature plasma abatement device according to claim 1, wherein:
the power supply battery (1) is provided with a switch and a battery shell.
5. A low temperature plasma abatement device according to claim 4, wherein:
the method comprises the following steps that a switch on a power supply battery (1) is turned on, the power supply battery (1) is in a power supply state, the power supply battery (1) supplies power to a high-voltage generator (2), the high-voltage generator (2) converts low-voltage direct current into high-voltage alternating current and outputs the high-voltage alternating current to a low-temperature plasma generator (3), the low-temperature plasma generator (3) generates surface discharge at a linear electrode (4) after reaching breakdown voltage under the action of the high-voltage alternating current, low-temperature plasma is generated, and the low-temperature plasma is released on the surface of an object to be processed through a plasma release window and is killed on the surface of the object to be processed.
6. A low temperature plasma abatement device according to claim 1, wherein:
the high-voltage generator (2) comprises an inversion/resonance circuit and a transformer, low-voltage direct current can be output into high-voltage alternating current, and outgoing lines are respectively connected to two ends of the low-temperature plasma generator.
7. A low temperature plasma abatement device according to claim 1, wherein:
the insulating shell (7) is made of PVC, organic glass or polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535461.1U CN218450651U (en) | 2022-09-23 | 2022-09-23 | Low-temperature plasma sterilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222535461.1U CN218450651U (en) | 2022-09-23 | 2022-09-23 | Low-temperature plasma sterilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218450651U true CN218450651U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222535461.1U Active CN218450651U (en) | 2022-09-23 | 2022-09-23 | Low-temperature plasma sterilizing device |
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| Country | Link |
|---|---|
| CN (1) | CN218450651U (en) |
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- 2022-09-23 CN CN202222535461.1U patent/CN218450651U/en active Active
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