Low-temperature plasma device

Abstract

The low-temperature plasma device comprises a machine body, a protective cover, a high-voltage power supply, an exciting electrode and a grounding structure, and the machine body is provided with a containing cavity with an opening; the protection cover is detachably installed on the machine body and provided with an installation cavity, an installation hole and an excitation hole, the installation hole and the excitation hole are used for communicating the installation cavity with the external environment and oppositely distributed in the first direction, and the installation hole communicates with the opening; the high-voltage power supply is mounted in the accommodating cavity; the excitation electrode is provided with a mounting end and a discharging end which are distributed in the first direction, the excitation electrode is arranged in the mounting hole and the opening in a penetrating mode, the mounting end is electrically connected with the high-voltage power source, and the discharging end extends into the mounting cavity and is coaxial with the excitation hole; the grounding structure is installed on the peripheral side face of the machine body and electrically connected with the grounding end of the high-voltage power source. The holding ring structure is arranged on the machine body and is directly grounded, and the protective cover is convenient to replace due to disassembly and assembly, so that the size of the excitation hole and the distance between the discharge end and the excitation hole can be adjusted according to different requirements.

Description

Technical Field

[0001] The invention relates to the field of electrical and electric technology, and in particular to a low-temperature plasma device. Background Art

[0002] Atmospheric pressure low-temperature plasma has broad application prospects, but current low-temperature plasma equipment is often bulky and single-function, which restricts its application in the civilian field. Atmospheric pressure air low-temperature plasma can easily develop into streamer spark discharge. Its diffuse and stable discharge effect directly determines its application scenario, and is also restricted by the structural design of the plasma device. The application of low-temperature plasma in beauty and other medical and biological fields has put forward higher requirements on its size, weight, appearance, and multi-function. How to design and develop a handheld and portable low-temperature plasma device that meets different application requirements is an issue that urgently needs to be studied in this application field. Summary of the invention

[0003] Based on the above description, the present invention provides a low-temperature plasma device to solve the problem that the existing low-temperature plasma device does not have the function of being convenient to hold and meeting different application requirements.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A low-temperature plasma device, comprising: A fuselage is provided with a receiving cavity having an opening; A protective cover is detachably mounted on the fuselage, the protective cover is provided with a mounting cavity and a mounting hole and an excitation hole which are used to connect the mounting cavity with the external environment and are relatively distributed along a first direction, and the mounting hole is connected with the opening; A high voltage power supply is installed in the accommodating cavity; an excitation electrode extending in a first direction and having a mounting end and a discharge end distributed in the first direction, the excitation electrode being inserted into the mounting hole and the opening, the mounting end being electrically connected to the high voltage power supply, the discharge end extending into the mounting cavity and being coaxially arranged with the excitation hole; and, A grounding structure is installed on the peripheral side of the fuselage, and the grounding structure is electrically connected to the grounding end of the high voltage power supply.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows: Furthermore, the discharge end is arranged in a circular shape, and is provided with a plurality of discharge structures arranged in an array, and the plurality of discharge structures are all arranged in a cone shape with the tips facing the excitation hole, and the plurality of tips are all arranged flush.

[0006] Furthermore, each of the discharge structures is arranged in a cone with four edges, the bottom ends of two adjacent discharge structures are connected, and the angle between two opposite side surfaces of two adjacent discharge structures is ∠A, 25°≤∠A≤35°.

[0007] Furthermore, the discharge end is processed into a plurality of discharge structures through a batching process.

[0008] Furthermore, the protective cover comprises a shell and a cover, the shell is detachably mounted on the body, the mounting cavity is formed in the shell, and the shell is provided with a mounting port connecting the mounting cavity and the external environment, and the cover is detachably mounted on the mounting port; The mounting hole is provided on the housing; The excitation hole is arranged on the cover body.

[0009] Furthermore, the end surface of the cover body is provided with a connecting sleeve, and the connecting sleeve is adapted to the installation opening and inserted into the installation opening; The excitation hole corresponds to the inner hole of the connecting sleeve.

[0010] Furthermore, the mounting end of the high voltage electrode is provided with a latch extending along the first direction; The low-temperature plasma device further comprises a mounting plate, which is arranged in the accommodating cavity and is provided with a plug hole for the plug pin to pass through, and the plug hole is used for the plug pin to be inserted.

[0011] Furthermore, the low-temperature plasma device further comprises a mounting seat, which is detachably connected to the end surface of the mounting plate facing the mounting hole, and at least part of which is adapted to the mounting hole and inserted into the mounting hole, and the mounting seat is provided with an accommodating channel extending along the first direction; At least a portion of the high-voltage plug is accommodated in the accommodating channel, and a discharge end of the high-voltage plug is exposed outside the accommodating channel.

[0012] Furthermore, the distance between the discharge end and the excitation hole in the first direction is set to d, and d≥10 mm.

[0013] Further, the grounding structure is configured as a grounding metal ring; An annular groove adapted to the grounding structure is concavely formed on the peripheral side surface of the fuselage.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The grounding structure is installed on the peripheral side of the fuselage so that when a person holds the fuselage in his hand, the hand contacts the grounding structure and is at ground potential. The protective cover is close to the face, and the discharge end of the high-voltage electrode generates low-temperature plasma to treat the skin to be treated on the face through the excitation hole. Since the grounding structure is arranged on the fuselage, the disassembly, assembly and replacement of the protective cover are convenient. The protective cover can be detachably installed on the fuselage, so that the protective covers of different lengths can be replaced, and the distance between the power generation end and the excitation hole in the first direction can be adjusted to adjust the strength of the low-temperature plasma, or the protective cover of the excitation hole of different sizes can be replaced to adjust the effective area of ​​the low-temperature plasma, so as to meet different application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a low-temperature plasma device provided in an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the explosion structure; Figure 3 A schematic top view of a low-temperature plasma device provided by an embodiment of the present invention; Figure 4 for Figure 3 Schematic cross-sectional view along AA; Figure 5 for Figure 4 A magnified schematic diagram of the local A in the middle; Figure 6 It is a schematic diagram of the structure of the protective cover, the mounting seat and the mounting plate in the embodiment of the present invention; Figure 7 for Figure 6 A schematic cross-sectional view of the middle edge BB; Figure 8 It is a schematic diagram of a part of the structure in which the protective cover and the mounting base are installed on the fuselage in an embodiment of the present invention; Fig. 9 It is a schematic diagram of the structure of the high voltage electrode in the present invention; Fig.10 for Fig. 9 A schematic diagram of the structure from another perspective.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Body; 11. Accommodating cavity; 111. Opening; 12. Annular groove; 13. Bolt hole; 14. Connecting column; 2. Protective cover; 21. Shell; 211. Mounting cavity; 212. Mounting hole; 213. Mounting port; 214. Connecting hole; 22. Cover; 221. Excitation hole; 23. Connecting sleeve; 3. High-voltage power supply; 4. Excitation electrode; 41. Mounting end; 411. Pin; 412. Tail spike; 42. Discharge end; 421. Discharge structure; 5. Grounding structure; 51. Grounding metal ring; 6. Mounting plate; 61. Socket; 62. First through hole; 7. Mounting seat; 71. Accommodating channel; 72. Connecting pin; 73. Second through hole. DETAILED DESCRIPTION

[0017] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0019] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0020] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0021] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0022] Please refer to Figure 1 , Figure 2 and Figure 4 In this embodiment, the low-temperature plasma device includes a body 1, a protective cover 2, a high-voltage power supply 3 and an excitation electrode 4, wherein the body 1 is provided with a housing chamber 11 having an opening 111; the protective cover 2 is detachably mounted on the body 1, the protective cover 2 is provided with a mounting chamber 211 and a mounting hole 212 and an excitation hole 221 which are relatively distributed along a first direction and are used to connect the mounting chamber 211 with the external environment, and the mounting hole 212 is arranged in communication with the opening 111; the high-voltage power supply 3 is installed in the housing chamber 11; the excitation electrode 4 extends along the first direction and has a mounting end 41 and a discharge end 42 which are distributed along the first direction, the excitation electrode 4 is penetrated in the mounting hole 212 and the opening 111, the mounting end 41 is electrically connected to the high-voltage power supply 3, the discharge end 42 extends into the mounting chamber 211 and is coaxially arranged with the excitation hole 221; the grounding structure 5 is installed on the peripheral side of the body 1, and the grounding structure 5 is electrically connected to the grounding end of the high-voltage power supply 3.

[0023] The grounding structure 5 is installed on the peripheral side of the fuselage 1 so that when a person holds the fuselage 1 by hand, the grounding structure 5 is in contact with the grounding structure 5 and is at ground potential. The protective cover 2 is close to the face, and the discharge end 42 of the high-voltage electrode generates low-temperature plasma to treat the skin to be treated on the face through the excitation hole 221. Since the grounding structure 5 is arranged on the fuselage 1, the disassembly and replacement of the protective cover 2 is convenient. The protective cover 2 is detachably installed on the fuselage 1, so that the protective cover 2 of different lengths can be replaced, and the distance between the power generation end and the excitation hole 221 in the first direction can be adjusted to adjust the strength of the low-temperature plasma, or by replacing the protective cover 2 with the excitation hole 221 of different sizes, the effective area of ​​the low-temperature plasma can be adjusted, so as to meet different application requirements.

[0024] Specifically, in this embodiment, refer to Figure 3 , Fig. 9 and Fig.10The discharge end 42 is circular and provided with a plurality of discharge structures 421 arranged in an array. Each of the discharge structures 421 is conical with its tip facing the excitation hole 221. The tips of the plurality of discharge structures 421 are arranged flush. The high voltage electrode is made of ablation-resistant wire material, preferably brass or stainless steel. The discharge end 42 is a metal tip array, and the top of the tip is flush, and the circumference is evenly and densely distributed. The tip curvature radius of each discharge structure 421 is as small as possible.

[0025] More specifically, continue to refer to Figure 3 , Fig. 9 and Fig.10 Each of the discharge structures 421 is arranged in a cone with four edges, the bottom ends of two adjacent discharge structures 421 are connected, and the angle between two opposite sides of two adjacent discharge structures 421 is ∠A, 25°≤∠A≤35°. In this embodiment, ∠A=30°.

[0026] In this embodiment, the discharge end 42 is processed into a plurality of discharge structures 421 by a batching process. Batch processing refers to a process of processing metal to process various textures and patterns on its surface. The discharge end 42 is processed by the batching process to form a plurality of discharge structures 421 evenly and densely distributed on the circumference, and the tip of each discharge structure 421 has the smallest curvature radius, so the excitation effect is better.

[0027] In another embodiment, the plurality of discharge structures 421 may also be configured as a plurality of metal needles that are uniformly and densely distributed along a circumference.

[0028] Further, in this embodiment, referring to Figures 5 to 7 The protective cover 2 includes a shell 21 and a cover 22. The shell 21 is detachably mounted on the body 1. The shell 21 is formed with the mounting cavity 211 and is provided with a mounting port 213 connecting the mounting cavity 211 and the external environment. The cover 22 is detachably mounted on the mounting port 213. The mounting port 212 is provided on the shell 21. The excitation hole 221 is provided on the cover 22. Thus, the cover 22 with the excitation hole 221 of different diameters can be directly replaced and installed on the shell 21 to adjust the area of ​​the skin to be treated on the face where the low-temperature plasma acts. The functions are diverse and the operation is simpler.

[0029] Further, refer to Figures 5 to 7, the end surface of the cover body 22 is provided with a connecting sleeve 23, and the connecting sleeve 23 is adapted to the installation opening 213 and inserted into the installation opening 213; the excitation hole 221 corresponds to the inner hole of the connecting sleeve 23. In this embodiment, the upper cavity wall of the installation cavity 211 is through-set to form the installation opening 213. The connecting sleeve 23 is inserted into the installation opening 213, and the peripheral side wall of the connecting sleeve 23 abuts against the peripheral side wall of the installation cavity 211, and the end surface of the cover body 22 facing the installation opening 213 overlaps the upper end surface of the shell 21. Therefore, the shell 21 can be tightly installed on the cover body 22, and can also be removed from the shell 21 to facilitate replacement.

[0030] In another embodiment, the periphery of the connecting sleeve 23 and the peripheral side wall of the installation cavity 211 are both provided with threads that are threadedly connected to each other.

[0031] In this embodiment, the body 1 has high voltage insulation capability to ensure insulation isolation between the high voltage of the high voltage power source 3 and the ground terminal, and between the high voltage electrode and the ground structure 5. The protective cover 2 is made of insulating skin-friendly material, preferably PC.

[0032] The present invention does not limit the shape of the protective cover 2, as long as it can be disassembled and assembled on the fuselage 1 and is provided with the excitation hole 221 and the mounting hole 212 relatively distributed along the first direction. In the present embodiment, the protective cover 2 is a cylindrical outer cover which is hollow as a whole and has holes at the top and bottom.

[0033] To install the high voltage electrode, refer to Figures 5 to 8 , the mounting end 41 of the high-voltage electrode is provided with a plug 411 extending along the first direction; the low-temperature plasma device also includes a mounting plate 6, the mounting plate 6 is arranged in the accommodating cavity 11, and is provided with a plug hole 61 for the plug 411 to pass through, the plug hole 61 is used for the plug 411 to be inserted, and the plug 411 extends out of the plug hole 61 to the accommodating cavity 11, so as to facilitate electrical connection with the high-voltage power supply 3. In this embodiment, the high-voltage electrode is first installed on the mounting plate 6 through the cooperation of the plug 411 and the plug hole 61, ensuring that the high-voltage electrode is arranged vertically, and then the mounting plate 6 is fixed in the accommodating cavity 11, and the high-voltage electrode is passed through the mounting hole 212, ensuring that the high-voltage electrode is concentric with the mounting hole 212 and the excitation hole 221. In this way, the installation operation is simple and the product quality is improved.

[0034] In addition, the plug 411 is also connected to a tail thorn 412, the tail thorn 412 is electrically connected to the high-voltage battery, and the length of the tail thorn 412 is L, L≤0.05mm.

[0035] In this embodiment, refer to Figure 5 The lower cavity wall of the installation cavity 211 is penetrated with a plurality of connection holes 214 circumferentially spaced around the installation hole 212; the fuselage 1 is provided with bolt holes 13 corresponding to the plurality of connection holes 214 one by one; the protective cover 2 also includes a plurality of connection bolts, each of which passes through each of the connection holes 214 and is screwed into the corresponding bolt hole 13, so that the protective cover 2 is firmly installed on the fuselage 1.

[0036] In another embodiment, one of the surfaces opposite to each other of the shell 21 and the body 1 may be provided with a plurality of card blocks, and the other may be provided with a plurality of card slots that cooperate with the plurality of card blocks one by one, so as to realize the disassembly and assembly of the protective cover 2 and the body 1.

[0037] Specifically, refer to Figures 5 to 8 The low-temperature plasma device further comprises a mounting seat 7, which is detachably connected to the end face of the mounting plate 6 facing the mounting hole 212, and at least part of it is adapted to and inserted into the mounting hole 212, and the mounting seat 7 is provided with an accommodating channel 71 extending along the first direction; at least part of the high-voltage plug 411 is accommodated in the accommodating channel 71, and its discharge end 42 is exposed outside the accommodating channel 71. The mounting seat 7, the mounting plate 6 and the high-voltage electrode are first assembled into one body, and then assembled into the mounting hole 212, so that the high-voltage electrode is coaxially arranged with the excitation hole 221, and the mounting seat 7 plays a role in assisting the installation and protecting the high-voltage electrode, and has a beautiful appearance.

[0038] In this embodiment, the portion of the mounting seat 7 away from the mounting hole 212 is adapted to the mounting plate 6, and is provided with a plurality of connecting pins 72 spaced apart along the circumference of the accommodating channel 71, and the mounting plate 6 is provided with a plurality of first through holes 62 corresponding to each other and adapted to the plurality of connecting pins 72. Each of the connecting pins 72 is passed through each of the first through holes 62, so that the mounting plate 6 is mounted on the end surface of the mounting seat 7 away from the mounting hole 212. The mounting seat 7 is also provided with a plurality of second through holes 73, and the plurality of second through holes 73 are provided for the plurality of connecting columns 14 of the upper cavity wall of the accommodating cavity 11 to pass through in a one-to-one correspondence, so as to fix the mounting seat 7 to the fuselage 1.

[0039] In this embodiment, the distance between the discharge end 42 and the excitation hole 221 in the first direction is set to d, where d≥10 mm.

[0040] The shape of the grounding structure 5 is not limited, as long as the grounding structure 5 can be touched by a person holding the body 1. In this embodiment, the grounding structure 5 is configured as a grounding metal ring 51; and a circular groove 12 adapted to the grounding structure 5 is concavely formed on the peripheral side surface of the body 1. This facilitates contact with a person when holding the body 1, ensuring that the person is at ground potential.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low temperature plasma device, characterized in that: include: A fuselage is provided with a receiving cavity having an opening; A protective cover is detachably mounted on the fuselage, the protective cover is provided with a mounting cavity and a mounting hole and an excitation hole which are used to connect the mounting cavity with the external environment and are relatively distributed along a first direction, and the mounting hole is connected with the opening; A high voltage power supply is installed in the accommodating cavity; an excitation electrode extending in a first direction and having a mounting end and a discharge end distributed in the first direction, the excitation electrode being inserted into the mounting hole and the opening, the mounting end being electrically connected to the high voltage power supply, the discharge end extending into the mounting cavity and being coaxially arranged with the excitation hole; and, A grounding structure is installed on the peripheral side of the fuselage, and the grounding structure is electrically connected to the grounding end of the high voltage power supply.

2. The low-temperature plasma device according to claim 1, characterized in that: The discharge end is arranged in a circular shape and is provided with a plurality of discharge structures arranged in an array. The plurality of discharge structures are arranged in a cone shape with the tips facing the excitation hole and the tips are arranged flush.

3. The low-temperature plasma device according to claim 2, characterized in that: Each of the discharge structures is arranged in a cone with four edges, the bottom ends of two adjacent discharge structures are connected, and the angle between two opposite side surfaces of two adjacent discharge structures is ∠A, 25°≤∠A≤35°.

4. The low-temperature plasma device according to claim 2, characterized in that: The discharge end is processed into a plurality of discharge structures through a batching process.

5. The low-temperature plasma device according to claim 1, characterized in that: The protective cover comprises a shell and a cover, the shell is detachably mounted on the body, the mounting cavity is formed in the shell, and the shell is provided with a mounting opening connecting the mounting cavity and the external environment, and the cover is detachably mounted on the mounting opening; The mounting hole is provided on the housing; The excitation hole is arranged on the cover body.

6. The low-temperature plasma device according to claim 5, characterized in that: The end surface of the cover body is provided with a connecting sleeve, and the connecting sleeve is adapted to the installation opening and inserted into the installation opening; The excitation hole corresponds to the inner hole of the connecting sleeve.

7. The low-temperature plasma device according to claim 1, characterized in that: The mounting end of the high voltage electrode is provided with a latch extending along a first direction; The low-temperature plasma device further comprises a mounting plate, which is arranged in the accommodating cavity and is provided with a plug hole for the plug pin to pass through, and the plug hole is used for the plug pin to be inserted.

8. The low-temperature plasma device according to claim 7, characterized in that: The low-temperature plasma device further comprises a mounting seat, which is detachably connected to the end surface of the mounting plate facing the mounting hole, and at least part of which is adapted to the mounting hole and inserted into the mounting hole, and the mounting seat is provided with an accommodating channel extending along the first direction; At least a portion of the high-voltage plug is accommodated in the accommodating channel, and a discharge end of the high-voltage plug is exposed outside the accommodating channel.

9. The low-temperature plasma device according to claim 1, characterized in that: The distance between the discharge end and the excitation hole in the first direction is set to d, where d≥10 mm.

10. The low-temperature plasma device according to claim 1, characterized in that: The grounding structure is configured as a grounding metal ring; An annular groove adapted to the grounding structure is concavely formed on the peripheral side surface of the fuselage.

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