Low-temperature plasma emission head

Abstract

The low-temperature plasma emission head comprises an electrode tube, a shell, a grounding ring and a sleeve, the shell is of a hollow structure with two open ends, one end of the shell in the length direction is a discharge end, the other end of the shell in the length direction is a wire inlet end, the sleeve is arranged in the shell and is aligned with the discharge end of the shell, and the grounding ring sleeves the sleeve and is electrically connected with a negative electrode of an external power supply. The electrode tube is of a tubular structure, the electrode tube is arranged in the sleeve, communicated with an external air source and electrically connected with the positive electrode of an external power source, and the tubular electrode is used for replacing an existing needle-ring-shaped electrode, so that the emission efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a low-temperature plasma emitting head. Background Art

[0002] In recent years, the application of low-temperature plasma technology in the biomedical field has become a new research hotspot and thus developed into a new discipline - plasma medicine. By utilizing the interaction between the active particles (such as O2-, NO-, and N3-, etc.), charged particles, and ultraviolet light generated by the plasma with objects to be processed such as gases, liquids, and tissues, the plasma is widely applied in aspects such as sterilization, dermatosis treatment, tumor treatment, stomatology, and wound healing. However, the electrode used in the existing low-temperature plasma device is a needle-ring electrode, and the surface area of its electrode head is needle-shaped, resulting in low plasma gas emission efficiency. Utility Model Content

[0003] In view of this, this application proposes a low-temperature plasma emitting head to improve the ionization efficiency.

[0004] According to one aspect of this application, a low-temperature plasma emitting head is provided, including: an electrode tube, a housing, a grounding ring, and a sleeve;

[0005] The housing is a hollow structure with openings at both ends, one end in the length direction is the discharge end, and the other end is the wire inlet end;

[0006] The sleeve is arranged inside the housing and is aligned with the discharge end of the housing;

[0007] The grounding ring is sleeved outside the sleeve and is electrically connected to the negative pole of the external power supply;

[0008] The electrode tube is a tubular structure, and the electrode tube is arranged inside the sleeve, communicates with the external gas source, and is electrically connected to the positive pole of the external power supply.

[0009] In a possible implementation manner, the electrode tube is made of copper.

[0010] In a possible implementation manner, the low-temperature plasma emitting head further includes: a fixing ring;

[0011] The fixing ring is arranged inside the housing;

[0012] The fixing ring is a ring structure, the outer side wall is fixedly connected to the inside of the housing, and the inner side wall is matched with the sleeve;

[0013] The fixing ring abuts against the grounding ring;

[0014] The fixing ring and the grounding ring are coaxially arranged.

[0015] In a possible implementation manner, the sleeve is made of quartz glass;

[0016] One end of the sleeve in the length direction is the gas outlet end, and the gas outlet end of the sleeve is hermetically connected to the discharge end of the housing, and the other end is the gas inlet end;

[0017] In a possible implementation manner, the low-temperature plasma emitting head further includes: a mounting base;

[0018] The mounting base is fixedly installed inside the housing and is located at the middle position of the housing;

[0019] The sleeve is embedded in the mounting base, and the electrode tube is inserted into the interior of the mounting base and is connected to

[0020] the external gas source.

[0021] In a possible implementation manner, the low-temperature plasma emitting head further includes: a sealing sleeve;

[0022] The sealing sleeve is made of an insulating material;

[0023] The sealing sleeve is wrapped around the connection position of the sleeve and the mounting base.

[0024] In a possible implementation manner, the low-temperature plasma emitting head further includes: a fixing block;

[0025] A fixing block mounting hole is provided inside the housing, and the fixing block mounting hole is provided with a first internal thread;

[0026] The fixing hole block is provided with a through fixing block fixing hole, and the fixing block fixing hole is provided with a second internal thread, and the structure of the second internal thread is the same as that of the first internal thread;

[0027] When the fixing block mounting hole and the fixing block fixing hole are fixed with bolts, the fixing hole presses against the wire of the external power supply and abuts against the electrode tube.

[0028] In a possible implementation manner, the grounding ring is a ring structure, and the grounding ring is provided with a negative connection groove along the axial length direction;

[0029] The negative wire of the external power supply is embedded in the negative connection groove.

[0030] In a possible implementation manner, the low-temperature plasma emitting head further includes: an outer skin pipeline, a high-voltage wire, a gas source pipeline and a grounding wire;

[0031] The outer skin pipeline is a tubular structure and is wrapped around the outside of the high-voltage wire, the gas source pipeline and the grounding wire;

[0032] One end of the outer skin pipeline is embedded in the wire inlet end of the housing;

[0033] The high-voltage wire is electrically connected to the electrode tube;

[0034] The grounding wire is electrically connected to the grounding ring;

[0035] The gas source pipeline is communicated with the electrode tube.

[0036] In a possible implementation manner, the outer skin pipeline is made of an insulating material.

[0037] Advantages of the low-temperature plasma emitter according to the embodiments of the present application: In the low-temperature plasma emission device of the present application, by utilizing the interaction between the active particles (such as O2−, NO−, and N3−, etc.), charged particles, and ultraviolet light generated by the plasma and the treatment objects such as gases, liquids, and tissues, the plasma is widely applied to aspects such as sterilization, skin disease treatment, tumor treatment, stomatology, and wound healing. Among them, the present application uses a tubular electrode to replace the traditional needle-shaped electrode, increasing the application range of ionization, greatly improving the ionization and emission efficiency, and after the ionization efficiency is improved, the blockage problem of the ionization region can be avoided, thereby prolonging the service life of the device and reducing the frequency and cost of maintenance and repair.

[0038] According to the following detailed description of the exemplary embodiments with reference to the accompanying drawings, other features and aspects of the present application will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings included in the specification and constituting a part of the specification show the exemplary embodiments, features, and aspects of the present application together with the specification, and are used to explain the principles of the present application.

[0040] Figure 1 A semi-sectional front view schematic diagram showing the low-temperature plasma emitter according to the embodiment of the present application;

[0041] Figure 2 A semi-sectional main body schematic diagram showing the low-temperature plasma emitter according to the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] The following will detail various exemplary embodiments, features, and aspects of the present application with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0043] Among them, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0045] The special term "exemplary" herein means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior or better than other embodiments.

[0046] In addition, for better illustration of the present application, numerous specific details are given in the following specific implementation manners. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, elements and circuits well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0047] Referring to Figure 1 and Figure 2 , the low-temperature plasma emitter of the embodiment of the present application is suitable for connecting to an external power supply and an external gas source, and includes: an electrode tube 700, a housing 100, a grounding ring 200 and a sleeve 600. The housing 100 is a hollow structure with openings at both ends. One end in the length direction is a discharge end 110, and the other end is a wire inlet end 120. The sleeve 600 is arranged inside the housing 100 and is aligned with the discharge end 110 of the housing 100. The grounding ring 200 is sleeved outside the sleeve 600 and is electrically connected to the negative pole of the external power supply. The electrode tube 700 is a tubular structure, and the electrode tube 700 is arranged inside the sleeve 600, is respectively communicated with the external gas source, and is electrically connected to the positive pole of the external power supply.

[0048] In this embodiment, the low-temperature plasma emission device of the present application utilizes the interaction between active particles (such as O2-, NO-, and N3-, etc.), charged particles, and ultraviolet light generated by the plasma with treatment objects such as gases, liquids, and tissues. The plasma is widely used in aspects such as sterilization, dermatological treatment, tumor treatment, stomatology, and wound healing. Among them, the present application uses a tubular electrode structure to replace the traditional needle-shaped electrode structure, increasing the application range of ionization, greatly improving the ionization and emission efficiency. After the ionization efficiency is improved, the problem of blockage in the ionization region can be avoided, thereby extending the service life of the device and reducing the frequency and cost of maintenance and repair.

[0049] It should be noted that the electrode tube 700 of the present application is made of copper. Due to its excellent electrical conductivity, high thermal conductivity, good workability, and high chemical stability, copper is suitable as the electrode of the plasma jet device.

[0050] In a specific embodiment, the low-temperature plasma emission head further includes: a fixing ring 300, which is used to position the sleeve 600. The fixing ring 300 is fixedly installed inside the housing 100 and is adjacent to the discharge end 110 of the housing 100, so that the sleeve 600 can pass through the fixing ring 300 to the discharge end 110 of the housing 100.

[0051] In this embodiment, the fixing ring 300 is of a ring structure, the outer side wall is fixedly connected to the inside of the housing 100, and the inner side wall of the fixing ring 300 is matched with the sleeve 600. After the sleeve 600 passes through the fixing ring 300, the fixing of the sleeve 600 is completed.

[0052] Among them, the fixing ring 300 is coaxially arranged with the through holes opened at both ends of the housing 100, so as to ensure that the sleeve 600 passing through the fixing ring 300 can be coaxially arranged with the opening of the discharge end 110 of the housing 100, facilitating the port of the sleeve 600 to be flush with the discharge end 110 of the housing 100.

[0053] In a specific embodiment, the sleeve 600 is made of quartz glass. The high purity, high transparency, high temperature resistance, good chemical stability, high mechanical strength, and low dielectric constant of quartz glass make it an ideal choice for the ionization site. It can withstand the high temperature, high pressure, and strong electric field generated during the ionization process, while maintaining the structural integrity and performance stability, providing reliable support for the ionization experiment.

[0054] In this embodiment, the sleeve 600 is a hollow columnar structure with both ends open, one end is the gas outlet end, and the other end is the gas inlet end. The sleeve 600 is installed inside the housing 100 through the fixing ring 300, which is used to provide a cavity for the ionized body and transmit the ionized gas through the gas outlet end.

[0055] Among them, a part of the electrode tube 700 is inserted into the air inlet end of the sleeve 600, and the electrode tube 700 is connected to an external gas source and a high-voltage wire, so that the gas is ionized and discharged from the air outlet end of the sleeve 600.

[0056] In a specific embodiment, the low-temperature plasma emitter further includes: a fixing block for pressing the connection between the electrode tube 700 and the high-voltage wire. Specifically, a fixing block mounting hole corresponding to the mounting seat is provided inside the housing 100 for fastening the fixing block, and together with the mounting seat, it presses the middle electrode tube 700 and the high-voltage wire, so that the connection between the electrode tube 700 and the high-voltage wire is more stable.

[0057] In this embodiment, the first electrode tube 700 hole and the second electrode tube 700 hole are opened at the middle position of the mounting seat, and the mounting seat is of a columnar structure. Therefore, the first electrode tube 700 hole and the second electrode tube 700 hole are coaxially arranged with the mounting seat. When the cross-section of the opening provided on the side wall of the mounting seat is a semi-circle, the side wall of the electrode tube 700 can be exposed from the mounting seat. When one side presses the opening of the mounting seat with an arc-shaped fixing hole, it can be pressed along the opening direction of the mounting seat.

[0058] Among them, one side cross-section of the fixing block facing the extrusion direction of the mounting seat opening is square, so that the inserted high-voltage wire can fully contact the electrode tube 700. In addition, a space for the high-voltage wire to enter the mounting seat opening is reserved between the fixing hole and the opening of the mounting seat, so that the high-voltage wire can enter from the space reserved between the fixing block and the mounting seat and contact the electrode tube 700.

[0059] Among them, the position where the fixing block mounting hole is opened inside the housing 100 corresponds to the opening provided on the mounting seat. The fixing block mounting hole opened inside the housing 100 is provided with a first internal thread, and the through hole provided on the fixing block has a second internal thread. The thread structures of the first internal thread and the second internal thread are the same, and a bolt can be used for fixing. In this way, the high-voltage wire can be first abutted against the outer wall of the electrode tube 700 exposed by the mounting seat opening, and then the fixing block is used to press the electrode tube 700 and the high-voltage wire along the opening direction of the mounting seat, and the through holes opened on the fixing block mounting hole and the fixing hole are aligned, and a bolt is used for fixing to complete the crimping and fixing of the electrode tube 700 and the high-voltage wire.

[0060] In a specific embodiment, the low-temperature plasma emitter further includes: a sealing sleeve. The sealing sleeve is made of an insulating material and is wrapped around the connection position between the sleeve 600 and the mounting seat through the sealing sleeve to further improve the sealing performance of the connection between the mounting seat and the sleeve 600.

[0061] In this embodiment, inside the sleeve 600, gas will enter the inside of the sleeve 600 through the electrode tube 700, and the electrode tube 700 is connected to a high-voltage wire to ionize the gas inside the sleeve 600. Therefore, it is necessary to ensure the sealing performance of the connection position between the sleeve 600 and the mounting seat to avoid gas leakage.

[0062] In a specific embodiment, the grounding ring 200 is in a ring structure, is electrically connected to a low-voltage wire, and is sleeved outside the sleeve 600. Specifically, the grounding ring 200 is an important safety protection device of the plasma jet device. During the generation and maintenance of the plasma, charge accumulation or an electrostatic field may be generated inside the device. The grounding ring 200 provides a discharge path for these accumulated charges by connecting it to the electrical grounding system of the earth, thus preventing potential dangers caused by electrostatic discharge. The grounding ring 200 helps to maintain the charge balance inside the plasma jet device. During the plasma formation process, electrons and ions may separate to form charged regions. The presence of the grounding ring 200 can effectively neutralize these charged regions and prevent the adverse effects of charge imbalance on the performance and stability of the device. The grounding ring 200 can also provide a certain electromagnetic shielding effect. In some high electromagnetic field environments, the grounding ring 200 can reduce the influence of external electromagnetic interference on the plasma jet device, ensuring the normal operation of the device and the stability of the plasma. The grounding ring 200 also provides safety protection for the operator. During the operation of the plasma jet device, if there is a leakage or other electrical faults, the grounding ring 200 can ensure that the current quickly flows into the earth, thus avoiding the electric shock danger to the operator.

[0063] Among them, the grounding ring 200 is in a ring structure and is sleeved at a position outside the sleeve 600 and adjacent to the discharge end 110 of the housing 100.

[0064] In a specific embodiment, the discharge end 110 of the housing 100 is open, and the grounding ring 200, the fixing ring 300, the sleeve 600, the electrode tube 700, the first electrode tube 700 hole, and the second electrode tube 700 hole are coaxially arranged.

[0065] In a specific embodiment, the overall shape of the low-temperature plasma emission head housing 100 is a rectangular structure. In the middle position along the axis of the rectangle, there are two parts, namely the upper housing 100 and the lower housing 100. Through the fixing and disassembly of the upper housing 100 and the lower housing 100, the installation and later maintenance of the housing 100 of the warm plasma emission device are completed.

[0066] In this embodiment, after aligning the upper housing 100 and the lower housing 100, at least two or more corresponding threaded holes are opened along the length direction of the housing 100 to fix the upper housing 100 and the lower housing 100.

[0067] Among them, at the positions of the upper housing 100 and the lower housing 100 adjacent to the discharge end 110, there are buckles for installing the fixing ring 300. The buckle is a plate-like structure with an annular cross-section. Half of the buckle is integrally formed with the upper housing 100, and the other half is integrally formed with the lower housing 100. After the upper housing 100 and the lower housing 100 are fixed, the hole left in the middle position of the buckle matches the fixing ring 300. In this way, a clamping groove can be provided in the fixing ring 300 along the circumferential direction, and the fixing ring 300 can be fastened by being embedded on the buckle of the housing 100.

[0068] In this embodiment, the housing 100 has a rectangular structure and includes a position for holding. Therefore, the housing 100 has a columnar structure, which is convenient for holding. And the discharge end 110 of the housing 100 is conical, which can accurately output the ionized gas.

[0069] In a specific embodiment, the low-temperature plasma emitter further includes: a mounting base, which is fixedly installed inside the housing 100 and is located at the middle position of the housing 100. The sleeve 600 is embedded in the mounting base, and the electrode tube 700 is inserted into the inside of the mounting base and is connected to an external gas source for fixing the sleeve 600 and the electrode tube 700.

[0070] In a specific embodiment, the low-temperature plasma emitter further includes: an outer skin pipeline, a high-voltage wire, a gas source pipeline, and a ground wire. The high-voltage wire is respectively connected to the positive electrode of the external power supply and the electrode tube 700, the ground wire is connected to the grounding ring 200, and the gas source pipeline is respectively communicated with the external gas source and the electrode tube 700.

[0071] In this embodiment, the outer skin pipeline is made of an insulating material with a tubular structure and covers the outside of the high-voltage wire, the gas source pipeline, and the ground wire, optimizing the structure of the previous device. It replaces multiple lines and multiple interfaces with a composite single pipeline, which is convenient to use and reduces the volume of the emitter, making it more portable.

[0072] Among them, the outer skin pipeline is embedded at the wire inlet end 120 of the housing 100 and extends to the position of the mounting base inside the housing 100. The gas source pipeline covers the outside of the gas source fixed end extended from the mounting base, and the outer electrode tube 700 conveys gas.

[0073] In a specific embodiment, both ends of the electrode tube 700 are respectively located inside the sleeve 600 and the mounting base. The electrode tube 700 extends a preset distance inside the sleeve 600, and the length of the electrode tube 700 inside the sleeve 600 is 1 / 2 of the length of the sleeve 600.

[0074] Among them, the discharge area of the low-temperature plasma emission head is the position where the electrode tube 700 is connected to the high-voltage wire. The position where the electrode tube 700 is electrically connected to the high-voltage wire is at the opening provided on the side wall of the mounting seat. Therefore, the area where the gas generates ionization is through the opening of the mounting seat. When the gas is inside the electrode tube 700 and at the position where the electrode tube 700 is connected to the high-voltage wire, ionization occurs. The electrode tube 700 is made of copper and extends to the middle position of the sleeve 600 for 1 / 2 of the length of the sleeve 600. The extended part of the electrode tube 700 has the function of cooling the electrode, which can effectively extend the service life of the electrode tube 700.

[0075] The various embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technologies in the market, or to enable other ordinary skill in the art in the technical field to understand the disclosed embodiments.

Claims

1. A low-temperature plasma emission head, suitable for connecting to an external power source and an external gas source, characterized in that, Comprising: An electrode tube, a housing, a grounding ring and a sleeve; The housing is a hollow structure with openings at both ends. One end in the length direction is the discharge end, and the other end is the wire inlet end; The sleeve is arranged inside the housing and is aligned with the discharge end of the housing; The grounding ring is sleeved outside the sleeve and is electrically connected to the negative pole of the external power supply; The electrode tube is a tubular structure, and the electrode tube is arranged inside the sleeve, is communicated with the external gas source, and is electrically connected to the positive pole of the external power supply.

2. The low-temperature plasma emission head according to claim 1, characterized in that The electrode tube is made of copper.

3. The low-temperature plasma emission head according to claim 1, characterized in that, The low-temperature plasma emitter further comprises: a fixing ring; The fixing ring is arranged inside the housing; The fixing ring is a ring structure. The outer side wall is fixedly connected to the inside of the housing, and the inner side wall is matched with the sleeve; The fixing ring abuts against the grounding ring; The fixing ring and the grounding ring are coaxially arranged.

4. The low-temperature plasma emitter according to claim 1, characterized in that, The sleeve is made of quartz glass; One end in the length direction of the sleeve is the gas outlet end. The gas outlet end of the sleeve is hermetically connected to the discharge end of the housing, and the other end is the gas inlet end.

5. The low-temperature plasma emitter according to any one of claims 1-4, characterized in that, The low-temperature plasma emitter further comprises: a mounting base; The mounting base is fixedly installed inside the housing and is located at the middle position of the housing; The sleeve is embedded in the mounting base, and the electrode tube is inserted into the inside of the mounting base and is connected to the external gas source.

6. The low-temperature plasma emitter according to claim 5, characterized in that, The low-temperature plasma emitter further comprises: a sealing sleeve; The sealing sleeve is made of insulating material; The sealing sleeve covers the connection position between the sleeve and the mounting base.

7. The low-temperature plasma emitter according to claim 5, wherein The low-temperature plasma emitter further comprises: a fixing block; A fixing block mounting hole is provided inside the housing, and the fixing block mounting hole is provided with a first internal thread; The fixing block is provided with a through fixing block fixing hole, and the fixing block fixing hole is provided with a second internal thread, and the second internal thread has the same structure as the first internal thread; When the fixing block mounting hole and the fixing block fixing hole are fixed with bolts, the fixing hole presses the wire of the external power supply to abut against the electrode tube.

8. The low-temperature plasma emission head according to claim 3, characterized in that, The grounding ring is a ring structure, and the grounding ring is provided with a negative connection groove along the axial length direction; The negative wire of the external power supply is embedded in the negative connection groove.

9. The low-temperature plasma emission head according to claim 5, wherein, The low-temperature plasma emitter further comprises: an outer skin pipeline, a high-voltage wire, a gas source pipeline and a grounding wire; The outer skin pipeline is a tubular structure and covers the outside of the high-voltage wire, the gas source pipeline and the grounding wire; One end of the outer skin pipeline is embedded in the wire inlet end of the housing; The high-voltage wire is electrically connected to the electrode tube; The grounding wire is electrically connected to the grounding ring; The gas source pipeline is communicated with the electrode tube.

10. The low-temperature plasma emission head according to claim 9, wherein, The outer skin pipeline is made of insulating material.

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