Discharge assembly, plasma generation device and disinfection apparatus

Abstract

The present application relates to a discharge assembly, a plasma generation device and a disinfection apparatus. The discharge assembly comprises: dielectric tubes (10), wherein each dielectric tube (10) is provided with an accommodating cavity (11) and an opening (12); and electrodes (20), wherein at least part of each electrode (20) extends into the accommodating cavity (11) through the opening (12), a limiting portion (13) protruding from a cavity inner wall of the accommodating cavity (11), and the limiting portion (13) being used for limiting the electrode (20) in a direction intersecting the axial direction of the dielectric tube (10), such that the electrode (20) and the dielectric tube (10) are coaxially arranged.

Description

Discharge components, plasma generating devices and disinfection equipment

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2023117219532, filed on December 14, 2023, entitled “Discharge assembly, plasma generating device and disinfection equipment,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the technical field of disinfection equipment, and in particular to a discharge component, a plasma generating device and disinfection equipment. Background Art

[0004] As people's living standards improve, the demand for disinfection functions in daily household appliances is becoming increasingly urgent. Among them, plasma disinfection has been widely used due to its better disinfection effect.

[0005] The plasma disinfection method is to generate plasma through discharge in a solution environment, accompanied by ultraviolet radiation, shock waves, local high temperature, strong electric field and the generation of various active chemical free radicals to form a series of physical and chemical reactions, thereby achieving the effect of sterilization and disinfection.

[0006] However, during use, current plasma disinfection devices are prone to abnormal phenomena such as arcing and sparking, which affect the operating stability of the plasma disinfection device and the sterilization and disinfection effect of plasma-activated water.

[0007] Summary of the Invention

[0008] Based on this, it is necessary to provide a discharge component, a plasma generating device and a disinfection device to address the problem that the current plasma disinfection device is prone to abnormal phenomena such as arcing and sparking during use.

[0009] In a first aspect, the present application provides a discharge assembly, comprising:

[0010] a medium pipe having a receiving cavity and an opening communicating with the receiving cavity; and

[0011] an electrode, at least a portion of which extends into the accommodating cavity through the opening;

[0012] A limiting portion is protruding from the inner wall of the accommodating cavity, and the limiting portion is used to limit the electrode along a direction intersecting with the axial direction of the dielectric tube, so that the electrode and the dielectric tube are coaxially arranged.

[0013] In some embodiments, the limiting portions include at least three, and the limiting portions are evenly distributed along the circumference of the medium pipe.

[0014] In some embodiments, in a direction intersecting the axial direction of the medium tube, one end of each limiting portion close to the axis of the medium tube is a vertex, and a line connecting the vertices of all the limiting portions forms an inscribed circle, the diameter of the inscribed circle is greater than or equal to the outer diameter of the electrode.

[0015] In some embodiments, the vertex of each of the limiting portions is an arc-shaped vertex.

[0016] In some embodiments, the electrode has a positioning end and a suspension end that are oppositely arranged along the axial direction, the positioning end is used to be connected to the medium tube, and the suspension end is arranged away from the opening and extends into the medium tube.

[0017] In some embodiments, the suspension end is located between the limiting portion and the bottom of the medium tube, and in the axial direction of the medium tube, a distance L1 between the suspension end and the vertex of the limiting portion is greater than or equal to 3 mm.

[0018] In some embodiments, in a direction intersecting the axial direction of the medium tube, a distance L2 between an inner wall of the accommodating cavity and an outer wall of the electrode is greater than 1 mm.

[0019] In some embodiments, at least two flow guide holes are formed at the bottom of the medium tube opposite to the opening.

[0020] In some embodiments, the diameter of each of the guide holes is less than or equal to 2 mm.

[0021] In some embodiments, the medium tube includes a tube body and an air intake branch, the accommodating cavity and the opening are formed in the tube body, the air intake branch is connected to the accommodating cavity, and the axial direction of the air intake branch intersects with the axial direction of the tube body.

[0022] In some embodiments, an angle is formed between the axis of the intake branch pipe and the axis of the tube body, the angle is located on a side of the intake branch pipe away from the opening along the axial direction of the tube body, and the angle is greater than 90°.

[0023] In some embodiments, the dielectric tube is an insulating dielectric tube; and / or the electrode is a metal electrode.

[0024] In some embodiments, the discharge assembly further includes an insulating bracket detachably connected between the dielectric tube and the electrode, and the insulating bracket is used to fix the electrode at the opening.

[0025] In some embodiments, the insulating bracket has a mounting portion and a connecting portion, the mounting portion is used to snap-fit ​​with the opening, and the connecting portion is used to connect the electrode.

[0026] In a second aspect, the present application also provides a plasma generating device comprising the discharge assembly as described above.

[0027] In a third aspect, the present application also provides a disinfection device comprising the plasma generating device as described above.

[0028] The above-mentioned discharge assembly, plasma generating device and disinfection equipment, by protruding a limiting portion on the inner wall of the accommodating cavity, the limiting portion limits the electrode in the accommodating cavity along the radial direction of the dielectric tube, so that the electrode can be coaxially arranged with the dielectric tube, and the electrode is centered in the accommodating cavity, thereby improving the coaxiality between the electrode and the dielectric tube, effectively reducing the probability of abnormal phenomena such as electrode arcing and sparking caused by water accumulation due to the contact between the electrode end and the cavity wall of the accommodating cavity, and improving the operating stability and disinfection quality of the discharge assembly, plasma generating device and disinfection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic diagram of the overall structure of a discharge assembly according to one or more embodiments of the present application.

[0030] FIG2 is a cross-sectional view of a discharge assembly according to one or more embodiments of the present application.

[0031] FIG3 is a cross-sectional view of a discharge assembly according to one or more embodiments of the present application.

[0032] FIG4 is a cross-sectional view taken along line AA in FIG3 .

[0033] FIG5 is a schematic structural diagram of electrodes in a discharge assembly according to one or more embodiments of the present application.

[0034] FIG6 is a partial enlarged view of point B in FIG3 .

[0035] Explanation of the accompanying symbols: 100, discharge assembly; 10, dielectric tube; 20, electrode; 30, insulating bracket; 11, accommodating cavity; 12, opening; 13, limiting portion; 14, inscribed circle; 15, guide hole; 16, tube body; 17, air intake branch pipe; 21, positioning end; 22, suspension end; 31, mounting portion; 32, connecting portion; a, axial direction. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0042] Referring to Figures 1 and 2 , one embodiment of the present application provides a discharge assembly 100 comprising a dielectric tube 10 and an electrode 20. The dielectric tube 10 has a receiving cavity 11 and an opening 12 communicating with the receiving cavity 11. At least a portion of the electrode 20 extends into the receiving cavity 11 through the opening 12. A limiting portion 13 is protruding from the inner wall of the receiving cavity 11. The limiting portion 13 is used to limit the position of the electrode 20 along a direction intersecting the axial direction a of the dielectric tube 10, so that the electrode 20 and the dielectric tube 10 are coaxially arranged.

[0043] Specifically, the discharge assembly 100 can be applied to a plasma generating device. The dielectric tube 10 is used to accommodate and fix the electrode 20 . The electrode 20 is placed into the accommodating cavity 11 of the dielectric tube 10 through the opening 12 so that the electrode 20 discharges smoothly in the accommodating cavity 11 .

[0044] The shape of the electrode 20 can be, but is not limited to, a spring, a solid column, or a hollow tube. When the electrode 20 extends into the accommodating chamber 11 through the opening 12, the end of the electrode 20 near the opening 12 can be used to secure the dielectric tube 10, while the other end of the electrode 20 away from the opening 12 is configured as a discharge end. The electrode 20 can be made of a metal material with good electrical conductivity and corrosion resistance.

[0045] A limiting portion 13 is formed on the inner wall of the accommodating chamber 11 and projects toward the interior of the accommodating chamber 11. The limiting portion 13 can be configured as a limiting protrusion. When the end of the electrode 20, away from the opening 12, extends into the accommodating chamber 11, the electrode 20 is suspended within the accommodating chamber 11. The protruding limiting portion 13 allows the electrode 20 to be positioned perpendicular to the axial direction a of the dielectric tube 10, i.e., radially along the dielectric tube 10, so that the electrode 20 is centrally located within the accommodating chamber 11 and coaxially disposed with the dielectric tube 10.

[0046] It should be noted that when the end of the electrode 20 away from the opening 12 extends into the accommodating cavity 11, the electrode 20 is in a suspended state within the accommodating cavity 11. In this case, the electrode 20 is easily affected by external factors, causing the end of the electrode 20 located in the accommodating cavity 11 to easily deviate along the radial direction of the dielectric tube 10, making it difficult to ensure the coaxiality between the electrode 20 and the dielectric tube 10.

[0047] Furthermore, when one end of the electrode 20 within the accommodating chamber 11 deviates, the distal end of the electrode 20, i.e., the discharge end of the electrode 20, tends to adhere to the inner wall of the accommodating chamber 11. During operation, condensed water flows to the discharge end of the electrode 20 and accumulates between the discharge end and the inner wall of the accommodating chamber 11, preventing the condensed water from evaporating in time. This can cause abnormalities such as arcing and ignition, affecting the operational stability and sterilization effectiveness of the plasma generator.

[0048] In addition, due to the weight of the electrode 20 itself, the electrode 20 is prone to shaking during transportation and vibration, thereby generating an impact force on the medium pipe 10, causing the medium pipe 10 to break.

[0049] Based on this, the present application provides a protruding limiting portion 13 on the inner wall of the accommodating cavity 11. When the electrode 20 is located in the accommodating cavity 11, the limiting portion 13 limits the electrode 20 along the radial direction of the dielectric tube 10, so that the discharge end of the electrode 20 can be in a suspended state and centered in the accommodating cavity 11, thereby improving the coaxiality between the electrode 20 and the dielectric tube 10.

[0050] Thus, the limiting portion 13 not only effectively reduces the probability of abnormal phenomena such as arcing and sparking caused by the contact between the end of the electrode 20 and the wall of the accommodating chamber 11 and water accumulation, thereby improving the operational stability and disinfection quality of the discharge assembly 100, the plasma generating device, and the disinfection equipment, but also limits the shaking of the electrode 20 within the dielectric tube 10, reducing the impact force of the electrode 20 on the dielectric tube 10, and making the structure of the dielectric tube 10 more stable.

[0051] As shown in FIG. 3 and FIG. 4 , in some embodiments, the limiting portions 13 include at least three, and the limiting portions 13 are evenly distributed along the circumference of the medium pipe 10 .

[0052] Specifically, there can be three limiting portions 13 , which are evenly and spaced apart along the circumference of the medium pipe 10 , that is, in the radial cross section of the medium pipe 10 , the connecting lines between the three limiting portions 13 form an equilateral triangle.

[0053] When the electrode 20 is located in the accommodating cavity 11 , the three limiting portions 13 can limit the electrode 20 along the radial direction of the dielectric tube 10 , and the electrode 20 is subjected to uniform force, so that the electrode 20 can be better coaxially arranged with the dielectric tube 10 .

[0054] It can be understood that in the axial direction a of the dielectric tube 10, each limiting portion 13 is located at the same position on the dielectric tube 10, and the height of each limiting portion 13 protruding from the inner wall of the accommodating cavity 11 remains consistent, so that the force on the electrode 20 is more uniform.

[0055] Furthermore, four or more limiting portions 13 may be provided, with all limiting portions 13 being evenly spaced and arranged along the circumference of the dielectric tube 10 to provide a more uniform force on the electrode 20. The specific number of limiting portions 13 provided can be adjusted based on the actual size of the dielectric tube 10 and other factors, and will not be elaborated here.

[0056] In some embodiments, in a direction intersecting with the axial direction a of the medium tube 10 , the end of each limiting portion 13 close to the axis of the medium tube 10 is a vertex, and the vertices of all the limiting portions 13 are connected to form an inscribed circle 14 , and the diameter D2 of the inscribed circle 14 is greater than or equal to the outer diameter D1 of the electrode 20 .

[0057] Specifically, in the radial direction of the dielectric tube 10, each stopper 13 protrudes from the inner wall of the accommodating cavity 11, and the end closest to the axis of the dielectric tube 10 serves as the vertex of the stopper 13. The vertices of all the stoppers 13 are connected along the circumference of the dielectric tube 10 to form an inscribed circle 14. The outer diameter of the electrode 20 is D1, and the diameter of the inscribed circle 14 is D2. Setting D2 ≥ D1 ensures that the electrode 20 is more stably positioned within the accommodating cavity 11 and that the electrode 20 and the dielectric tube 10 are aligned as closely as possible.

[0058] In some embodiments, the vertex of each limiting portion 13 is an arc-shaped vertex.

[0059] Specifically, each limiting portion 13 can be configured to have a geometric shape such as a circle or an ellipse, so that the vertex of each limiting portion 13 forms an arc vertex. When each limiting portion 13 contacts the electrode 20, the arc vertex can limit the position of the electrode 20 while reducing the impact on the structure of the electrode 20, thereby better supporting the electrode 20 in the radial direction of the dielectric tube 10.

[0060] Please refer to Figure 2 and Figure 5 together. In some embodiments, the electrode 20 has a positioning end 21 and a suspension end 22 arranged oppositely along the axial direction a. The positioning end 21 is used to connect with the medium tube 10, and the suspension end 22 is arranged away from the opening 12 and extends into the medium tube 10.

[0061] Specifically, the positioning end 21 of the electrode 20 is located near the opening 12 and is used to connect to the dielectric tube 10 to secure the electrode 20 to the dielectric tube 10. The suspended end 22 of the electrode 20 extends through the opening 12 into the accommodating cavity 11 of the dielectric tube 10 and is suspended in the accommodating cavity 11. That is, the suspended end 22 of the electrode 20 serves as a discharge end.

[0062] The suspended end 22 of the electrode 20 extends into the accommodating cavity 11 to facilitate a discharge reaction in the accommodating cavity 11, and the electrode 20 is fixedly connected to the dielectric tube 10 through the positioning end 21, so that the electrode 20 can be more stably arranged in the accommodating cavity 11, ensuring the stability of the suspended end 22 so that it can discharge smoothly.

[0063] Please refer to Figure 3 and Figure 6 together. In some embodiments, the suspension end 22 is located between the limiting portion 13 and the bottom of the medium tube 10, and in the axial direction a of the medium tube 10, the distance L1 between the suspension end 22 and the vertex of the limiting portion 13 is greater than or equal to 3 mm.

[0064] Specifically, the bottom of the dielectric tube 10 is the end opposite the opening 12. When the electrode 20 extends into the accommodating cavity 11, the suspended end 22 of the electrode 20, i.e., the distal end of the electrode 20, is located between the limiting portion 13 and the bottom of the dielectric tube 10 along the axial direction a of the dielectric tube 10. Thus, the contact position between the limiting portion 13 and the electrode 20 is located on the side of the suspended end 22 closer to the positioning end 21. This allows the suspended end 22 to be better centered and limited within the accommodating cavity 11 under the support of the limiting portion 13, thereby improving the coaxiality between the electrode 20 and the dielectric tube 10.

[0065] When the suspended end 22 of the electrode 20 extends into the accommodating cavity 11, the suspended end 22 can extend beyond the limiting portion 13 toward the bottom of the medium tube 10, and in the axial direction a of the medium tube 10, the length of the suspended end 22 exceeding the vertex of the limiting portion 13, that is, the distance L1 between the suspended end 22 and the vertex of the limiting portion 13 is ≥3mm.

[0066] Therefore, when the electrode 20 is supported on the limiting portion 13, the suspended end 22 is in a suspended state and is centered in the medium tube 10, thereby better preventing the suspended end 22 of the electrode 20 from adhering to the inner wall of the accommodating cavity 11 to form the accumulation of condensed water, and effectively reducing the probability of abnormal phenomena such as arcing and sparking.

[0067] In some embodiments, in a direction intersecting the axial direction a of the medium tube 10 , a distance L2 between an inner wall of the accommodating cavity 11 and an outer wall of the electrode 20 is greater than 1 mm.

[0068] Specifically, in a direction perpendicular to the axial direction a of the medium tube 10, that is, in the radial direction of the medium tube 10, a gap is formed between the inner wall of the accommodating cavity 11 except the limiting portion 13 and the outer wall of the electrode 20. The gap is the distance L2 between the inner wall of the accommodating cavity 11 and the outer wall of the electrode 20.

[0069] By setting the gap, a sufficient annular airflow channel is retained between the outer wall of the electrode 20 and the inner wall of the accommodating cavity 11, which is conducive to the generation of discharge phenomenon.

[0070] Furthermore, the distance L2 between the inner wall of the accommodating cavity 11 and the outer wall of the electrode 20 is set to be greater than 1 mm, which can further improve the smoothness of the annular air flow channel.

[0071] In some embodiments, at least two flow guide holes 15 are formed at the bottom of the medium pipe 10 opposite to the opening 12 .

[0072] Specifically, a guide hole 15 is opened at the bottom of the dielectric tube 10. When the electrode 20 performs a discharge reaction, air flow or condensed water will be introduced into the accommodating cavity 11. The air flow or condensed water flows along the electrode 20 to the bottom of the dielectric tube 10 and can be guided out of the dielectric tube 10 through the guide hole 15, so that the discharge reaction process of the electrode 20 is smoother.

[0073] In some embodiments, the diameter of each guide hole 15 is less than or equal to 2 mm. Thus, each guide hole 15 can smoothly guide the airflow and condensed water in the dielectric tube 10 so that they can be smoothly discharged from the dielectric tube 10 without affecting the discharge reaction of the electrode 20 in the dielectric tube 10.

[0074] Please refer to Figures 1 and 2 again. In some embodiments, the medium tube 10 includes a tube body 16 and an air intake branch pipe 17. The accommodating cavity 11 and the opening 12 are formed in the tube body 16. The air intake branch pipe 17 is connected to the accommodating cavity 11, and the axial direction a of the air intake branch pipe 17 is intersected with the axial direction a of the tube body 16.

[0075] Specifically, the pipe body 16 is a hollow annular pipe with an opening 12 at one end to communicate with the accommodating chamber 11. The axial direction a of the intake branch pipe 17 intersects the axial direction a of the pipe body 16 and is connected to the side of the pipe body 16 near the opening 12.

[0076] One end of the intake branch pipe 17 is connected to the accommodating chamber 11, and the other end is normally open. Airflow can be introduced into the accommodating chamber 11 through the intake branch pipe 17. Specifically, an air pump is connected to the end of the intake branch pipe 17 away from the tube body 16. The air pump pumps external air into the accommodating chamber 11 through the intake branch pipe 17, thereby facilitating a discharge reaction of the electrode 20 within the accommodating chamber 11.

[0077] In some embodiments, an angle θ is formed between the axis of the intake branch pipe 17 and the axis of the tube body 16. The angle θ is located on the side of the intake branch pipe 17 away from the opening 12 along the axial direction a of the tube body 16, and the angle is greater than 90°.

[0078] Specifically, an angle is formed between the axis of the intake branch pipe 17 and the axis of the pipe body 16 , and the angle is located on the side of the intake branch pipe 17 away from the opening 12 , that is, on the side of the intake branch pipe 17 toward the bottom of the medium pipe 10 .

[0079] The angle is set to be greater than 90°, so that when air flow is introduced into the accommodating chamber 11 through the air intake branch 17, condensed water generated during operation can flow toward the bottom of the medium tube 10 and be discharged out of the medium tube 10 through the guide hole 15.

[0080] In some embodiments, the dielectric tube 10 is an insulating dielectric tube 10 ; and / or the electrode 20 is a metal electrode 20 .

[0081] Specifically, the dielectric tube 10 is configured as an insulating dielectric tube 10 to better accommodate the electrode 20 and provide a good reaction environment for the electrode 20. The electrode 20 can be configured as a metal electrode 20 with good conductivity and corrosion resistance to facilitate a smooth discharge reaction.

[0082] In some embodiments, the discharge assembly 100 further includes an insulating bracket 30 detachably connected between the dielectric tube 10 and the electrode 20 . The insulating bracket 30 is used to fix the electrode 20 at the opening 12 .

[0083] Specifically, when the electrode 20 extends into the accommodating cavity 11 of the dielectric tube 10 through the opening 12, the insulating bracket 30 is connected to the dielectric tube 10 and the electrode 20, respectively, to more stably fix the positioning end 21 of the electrode 20 at the position of the opening 12 of the dielectric tube 10. In this way, the suspended end 22 of the electrode 20 can be more stably arranged in the accommodating cavity 11, and a discharge reaction can occur.

[0084] Furthermore, since the insulating bracket 30 is detachably connected to the dielectric tube 10 and the electrode 20 , respectively, the electrode 20 can be more conveniently taken out of the accommodating cavity 11 or placed into the accommodating cavity 11 , which facilitates operation.

[0085] In some embodiments, the insulating bracket 30 has a mounting portion 31 and a connecting portion 32 . The mounting portion 31 is used to snap fit with the opening 12 , and the connecting portion 32 is used to connect to the electrode 20 .

[0086] Specifically, the insulating bracket 30 is snap-fitted with the mounting portion 31 and the opening 12. The mounting portion 31 can be, but is not limited to, set as a slot, and the shape of the slot matches the shape of the opening 12 so that the opening 12 of the medium tube 10 can be snapped into the slot, thereby realizing a detachable connection between the insulating bracket 30 and the medium tube 10.

[0087] The connecting portion 32 of the insulating bracket 30 is arranged in the middle position of the mounting portion 31, and the electrode 20 is connected to the connecting portion 32. When the insulating bracket 30 is fixed to the opening 12 through the mounting portion 31, the connecting portion 32 and the electrode 20 are both located in the accommodating cavity 11, so that the electrode 20 can better extend into the accommodating cavity 11.

[0088] Preferably, the connecting portion 32 can be set as a connecting protrusion, and the positioning end 21 of the electrode 20 is fixedly connected to the connecting protrusion through a medium such as ceramic powder, epoxy resin, etc. When the ceramic powder, epoxy resin, etc. medium is cured, the electrode 20 and the insulating bracket 30 are fixedly connected.

[0089] Of course, the connecting portion 32 can also be set as other structures, such as a slot, and the positioning end 21 of the electrode 20 is snapped into the slot to achieve a fixed connection between the electrode 20 and the insulating bracket 30, which will not be repeated here.

[0090] Based on the same concept as the above-mentioned discharge assembly 100 , the present application also provides a plasma generating device, including the above-mentioned discharge assembly 100 .

[0091] Based on the same concept as the above plasma generating device, the present application also provides a disinfection device, including the above plasma generating device. The disinfection device can be a dishwasher or other kitchen appliances, which will not be described in detail here.

[0092] According to one or more embodiments, during operation, the positioning end 21 of the electrode 20 is first fixedly connected to the connecting portion 32 of the insulating bracket 30, and then the insulating bracket 30 is fixed to the opening 12 of the tube body 16 through the mounting portion 31, so that the suspended end 22 of the electrode 20 extends into the accommodating cavity 11 through the opening 12.

[0093] One end of the air intake branch pipe 17 away from the pipe body 16 is connected to the pump body, and air is pumped into the air intake branch pipe 17 through the pump body, so that the air flow enters the accommodating cavity 11 smoothly.

[0094] The portion of the electrode 20 located within the accommodating cavity 11 is limited by the limiting portion 13 in the radial direction of the tube body 16, so that the suspended end 22 of the electrode 20 is centrally located and limited within the accommodating cavity 11, thereby improving the coaxiality between the electrode 20 and the dielectric tube 10. As a result, during transportation or vibration, the electrode 20 is less likely to shake due to the supporting force of the limiting portion 13, thereby reducing the probability of the electrode 20 generating an impact force on the dielectric tube 10 and causing the dielectric tube 10 to break.

[0095] Furthermore, by introducing airflow, the electrode 20 can smoothly generate a discharge reaction in the accommodating chamber 11. At the same time, because the limiting portion 13 supports the electrode 20, a gap is formed between the suspended end 22 of the electrode 20 and the cavity wall of the accommodating chamber 11, which can reduce the probability of condensed water generated during operation accumulating between the suspended end 22 of the electrode 20 and the cavity wall of the accommodating chamber 11, thereby effectively reducing the probability of abnormal phenomena such as arcing and ignition, and improving the operational stability and disinfection quality of the discharge assembly 100, the plasma generating device, and the disinfection equipment.

[0096] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A discharge assembly, characterized in that: include: A medium tube (10) having a containing cavity (11) and an opening (12) communicating with the containing cavity (11); and An electrode (20), at least a portion of the electrode (20) extends into the accommodating cavity (11) through the opening (12); A limiting portion (13) is protrudingly provided on the inner wall of the accommodating cavity (11), and the limiting portion (13) is used to limit the electrode (20) along a direction intersecting with the axial direction (a) of the medium tube (10), so that the electrode (20) and the medium tube (10) are coaxially arranged.

2. The discharge assembly according to claim 1, characterized in that: The limiting portions (13) include at least three, and the limiting portions (13) are evenly distributed along the circumference of the medium pipe (10).

3. The discharge assembly according to claim 2, characterized in that: In a direction intersecting the axial direction (a) of the medium tube (10), one end of each limiting portion (13) close to the axis of the medium tube (10) is a vertex, and a line connecting the vertices of all the limiting portions (13) forms an inscribed circle (14), and the diameter of the inscribed circle (14) is greater than or equal to the outer diameter of the electrode (20).

4. The discharge assembly according to claim 3, characterized in that: The apex of each limiting portion (13) is an arc-shaped apex.

5. The discharge assembly according to claim 3, characterized in that: The electrode (20) has a positioning end (21) and a suspension end (22) arranged opposite to each other along the axial direction (a); the positioning end (21) is used to be connected to the medium tube (10); and the suspension end (22) is arranged away from the opening (12) and extends into the medium tube (10).

6. The discharge assembly according to claim 5, characterized in that: The suspension end (22) is located between the limiting portion (13) and the bottom of the medium tube (10), and in the axial direction (a) of the medium tube (10), a distance L1 between the suspension end (22) and the vertex of the limiting portion (13) is greater than or equal to 3 mm.

7. The discharge assembly according to any one of claims 1 to 6, characterized in that: In a direction intersecting the axial direction (a) of the medium tube (10), a distance L2 between the inner wall of the accommodating cavity (11) and the outer wall of the electrode (20) is greater than 1 mm.

8. The discharge assembly according to claim 1, characterized in that: At least two flow guide holes (15) are provided at the bottom of the medium pipe (10) which is arranged opposite to the opening (12).

9. The discharge assembly according to claim 8, characterized in that: The diameter of each of the guide holes (15) is less than or equal to 2 mm.

10. The discharge assembly according to claim 1, characterized in that: The medium pipe (10) comprises a pipe body (16) and an air intake branch pipe (17), the accommodating cavity (11) and the opening (12) are formed in the pipe body (16), the air intake branch pipe (17) is connected to the accommodating cavity (11), and the axial direction (a) of the air intake branch pipe (17) intersects with the axial direction (a) of the pipe body (16).

11. The discharge assembly according to claim 10, characterized in that: An angle is formed between the axis of the intake branch pipe (17) and the axis of the tube body (16), and the angle is located on the side of the intake branch pipe (17) away from the opening (12) along the axial direction (a) of the tube body (16), and the angle is greater than 90°.

12. The discharge assembly according to claim 1, characterized in that: The dielectric tube (10) is an insulating dielectric tube; and / or the electrode (20) is a metal electrode.

13. The discharge assembly according to claim 1, characterized in that: The discharge assembly (100) further comprises an insulating bracket (30) detachably connected between the medium tube (10) and the electrode (20), wherein the insulating bracket (30) is used to fix the electrode (20) at the opening (12).

14. The discharge assembly according to claim 13, characterized in that: The insulating bracket (30) comprises a mounting portion (31) and a connecting portion (32); the mounting portion (31) is used for snap-fitting with the opening (12); and the connecting portion (32) is used for connecting the electrode (20).

15. A plasma generating device, characterized in that: It comprises the discharge assembly (100) according to any one of claims 1 to 14.

16. A disinfection device, characterized in that: Comprising the plasma generating device as claimed in claim 15.

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