Dielectric barrier discharge device and air treatment equipment
By setting the internal electrodes into multiple side-by-side electrode strands, the problem of high-frequency sound refraction in the dielectric barrier discharge device is solved, and the noise reduction effect and the effect of improving discharge stability is achieved.
Patent Information
- Application Number
- CN202421119693.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The high-frequency sound generated by existing dielectric barrier discharge devices during discharge will be refracted and amplified by the internal refractive and amplified by the insulated tube, resulting in a bad hearing.
The internal electrode is arranged as an electrode bundle, which consists of a plurality of electrode wires arranged side by side to reduce the refraction of high-frequency sound generated by ionizing air inside the insulating tube.
It realizes the reduction of the size of the different sound decibels, improves the user's listening comfort, and improves the uniformity and stability of discharge, avoiding the exceeding of the ozone concentration.
Smart Images
Figure CN222508355U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to but is not limited to the field of air purification technology, and specifically refers to a dielectric barrier discharge device and air treatment equipment. Background Art
[0002] In the related art, the discharge structure of the coaxial cylindrical dielectric barrier discharge (DBD) device is: an insulating tube (i.e., a dielectric tube) is used as a barrier medium, an internal electrode (electrode wire) is placed inside the insulating tube, an external electrode is arranged outside the insulating tube, and the internal gap of the insulating tube between the internal electrode and the external electrode forms a high-voltage discharge area, which generates various active factors, and can perform sterilization and deodorization on the air to be purified. In order to obtain a better sterilization and deodorization effect, the two ends of the insulating tube are usually not sealed, and the air to be purified passes through the inside and outside of the insulating tube and is purified by the reaction of the active factors.
[0003] The above solution has the following problems: the high-frequency sound generated by the ionized air will be refracted and amplified in the dielectric tube cavity, resulting in a bad hearing experience in actual applications. Utility Model Content
[0004] The technical problem to be solved by the present application is to provide a dielectric barrier discharge device and air handling equipment, which is helpful to reduce the abnormal noise level of the dielectric barrier discharge device by arranging the internal electrodes into electrode bundles.
[0005] To this end, an embodiment of the present application provides a dielectric barrier discharge device, including: a dielectric barrier discharge component, including a first electrode, a second electrode, and a blocking medium separating the first electrode from the second electrode, the blocking medium is cylindrical, and the internal space of the blocking medium forms a discharge space, the first electrode is an internal electrode, the second electrode is an external electrode, the first electrode is arranged into an electrode bundle, and the electrode bundle includes a plurality of electrode wires arranged side by side; a power supply module, electrically connected to the first electrode and the second electrode, and arranged to load a voltage on the first electrode and the second electrode so that the dielectric barrier discharge component generates a dielectric barrier discharge in the discharge space.
[0006] The dielectric barrier discharge device provided in the embodiment of the present application sets the internal electrode into a bundle structure including multiple electrode wires, and changes from a single-wire solution to a multi-wire solution, which can reduce the refraction of high-frequency sound generated by ionized air inside the insulating tube, thereby achieving a noise reduction effect, reducing the decibel size of abnormal sound, and helping to improve the user's hearing comfort. In addition, the surface area of multiple electrode wires is increased, which can improve the discharge uniformity, help reduce the generation of local discharge, and thus help to improve the discharge stability of the dielectric barrier discharge device, and is not easy to cause excessive ozone concentration. In addition, multiple electrode wires can also increase the discharge area, which is conducive to increasing the number and distribution of plasma and preventing the problem of low plasma production. The surface area of each electrode wire is relatively small, which is conducive to reducing the temperature of the surface of a single electrode wire, thereby helping to extend the service life of the internal electrode and solve the problem of high discharge intensity and easy corrosion over a long period of time in the single-wire solution.
[0007] Based on the above technical solution, the present application can also be improved as follows.
[0008] In some exemplary embodiments, the output voltage of the power supply module is less than 10 kV, and the inner diameter D of the blocking medium is greater than or equal to 1 mm.
[0009] In some exemplary embodiments, 1 mm≤the inner diameter D of the blocking medium≤1.5 mm.
[0010] In some exemplary embodiments, the diameter d of the electrode wire is 0.2 mm≤0.8 mm.
[0011] In some exemplary embodiments, the diameters of the plurality of electrode wires are equal.
[0012] In some exemplary embodiments, the diameters of the plurality of electrode wires are completely unequal or unequal, the maximum diameter of the plurality of electrode wires is recorded as dmax, the minimum diameter of the plurality of electrode wires is recorded as dmin, and dmin≥dmax / 2.
[0013] In some exemplary embodiments, 0.6 mm≤the sum of the diameters of the plurality of electrode wires≤1 mm.
[0014] In some exemplary embodiments, the electrode bundle is disposed in a central region of the blocking medium.
[0015] In some exemplary embodiments, the electrode wire is configured as a straight electrode; and / or the second electrode is configured as a spiral electrode, and the spiral electrode is coiled around the outer surface of the blocking medium.
[0016] An embodiment of the present application also provides an air treatment device, comprising a dielectric barrier discharge device as described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the structure of a dielectric barrier discharge device (without the power supply module) provided in some embodiments of the present application;
[0018] Figure 2 for Figure 1 The cross-sectional structural schematic diagram of the dielectric barrier discharge device shown.
[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0020] 1 first electrode, 11 electrode wire, 2 second electrode, 3 blocking medium. DETAILED DESCRIPTION
[0021] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.
[0022] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a dielectric barrier discharge device, including: a dielectric barrier discharge component and a power supply module (not shown in the figure).
[0023] Among them, Figure 1 and Figure 2 As shown, the dielectric barrier discharge assembly includes a first electrode 1, a second electrode 2, and a barrier medium 3 separating the first electrode 1 from the second electrode 2. The barrier medium 3 is cylindrical, and the internal space of the barrier medium 3 forms a discharge space. The first electrode 1 is an internal electrode, and the second electrode 2 is an external electrode. The first electrode 1 is arranged as an electrode bundle, and the electrode bundle includes a plurality of electrode wires 11 arranged side by side. The plurality of electrode wires 11 can be close together or spaced apart from each other. The plurality of electrode wires 11 can be fixed by gluing or by other means. The barrier medium 3 can be a tubular structure made of a material with good insulation such as a glass tube or a quartz tube.
[0024] The power supply module is electrically connected to the first electrode 1 and the second electrode 2, and is configured to apply voltage to the first electrode 1 and the second electrode 2 so that the dielectric barrier discharge component generates dielectric barrier discharge in the discharge space. The power supply module includes a high voltage power supply.
[0025] The dielectric barrier discharge device provided in the embodiment of the present application sets the internal electrode into a bundle structure including multiple electrode wires 11, and changes from a single-wire solution to a multi-wire solution, which can reduce the refraction of high-frequency sound generated by ionized air inside the insulating tube, thereby achieving a noise reduction effect, reducing the decibel size of abnormal sound, and helping to improve the user's hearing comfort. In addition, the surface area of multiple electrode wires 11 is increased, which can improve the discharge uniformity, help reduce the generation of local discharge, and thus help to improve the discharge stability of the dielectric barrier discharge device, and is not easy to cause excessive ozone concentration. In addition, multiple electrode wires 11 can also increase the discharge area, which is conducive to increasing the number and distribution of plasma and preventing the problem of low plasma production. The surface area of each electrode wire 11 is relatively small, which is conducive to reducing the temperature of the surface of a single electrode wire 11, thereby helping to extend the service life of the internal electrode and solve the problem of high discharge intensity and easy corrosion over a long period of time in the single-wire solution.
[0026] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the first electrode 1 is an internal electrode, and the second electrode 2 is an external electrode. Alternatively, the blocking medium 3 is sleeved on the outside of the first electrode 1, and the second electrode 2 is sleeved on the outside of the blocking medium 3, that is, the first electrode 1, the blocking medium 3, and the second electrode 2 are arranged in sequence from the inside to the outside. Alternatively, the blocking medium 3 is sleeved on the outside of the first electrode 1, and the second electrode 2 is embedded in the blocking medium 3, and is separated from the first electrode 1 by the blocking medium 3.
[0027] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the first electrode 1 is configured as a straight electrode, which is parallel to the central axis of the blocking medium 3. The second electrode 2 is configured as a spiral electrode, which is wound around the outer surface of the blocking medium 3. The spiral electrode can be a single spiral electrode or a multi-spiral electrode. The electrode bundle is disposed in the central area of the blocking medium 3. In other words, the plurality of electrode wires 11 are concentrated in the central area of the blocking medium 3.
[0028] This is conducive to uniform discharge of the discharge space in the circumferential direction, thereby helping to improve the uniformity of the active factor and helping to avoid sparking caused by uneven discharge.
[0029] Of course, the structure of the second electrode 2 is not limited to the above-mentioned structure, and can be adjusted as needed. For example, the second electrode 2 can also be a tubular electrode, which is sleeved on the outer wall of the blocking medium 3 .
[0030] In some exemplary embodiments, the first electrode 1 is a high voltage electrode, and the second electrode 2 is a ground electrode or a low voltage electrode, then the first electrode 1 is connected to the high voltage end of the power supply module, and the second electrode 2 is connected to the ground end or the low voltage end of the power supply module. Alternatively, the first electrode 1 is a ground electrode or a low voltage electrode, and the second electrode 2 is a high voltage electrode, then the second electrode 2 is connected to the high voltage end of the power supply module, and the first electrode 1 is connected to the ground end or the low voltage end of the power supply module. Alternatively, the first electrode 1 and the second electrode 2 are both high voltage electrodes, then the power supply module may include two high voltage packages, and the first electrode 1 and the second electrode 2 are respectively connected to the high voltage ends of the two high voltage packages, but there is a phase difference between the output voltages of the two high voltage packages, so that there is a phase difference between the loading voltages of the first electrode 1 and the second electrode 2.
[0031] In some exemplary embodiments, the output voltage of the power supply module is less than 10 kV, and the inner diameter D of the blocking medium 3 is greater than or equal to 1 mm. The output voltage of the power supply module refers to the peak voltage.
[0032] It has been verified through experiments that when the inner diameter D of the blocking medium 3 is less than 1 mm, the amount of air in the blocking medium 3 is small and the abnormal sound generated is also relatively small. Therefore, there is no need to set up multiple electrode wires 11. The single-wire solution can meet the demand for comfortable listening and has lower costs.
[0033] Of course, if the cost is not taken into consideration, when the inner diameter D of the blocking medium 3 is less than 1 mm, a multi-filament solution may also be adopted.
[0034] In some exemplary embodiments, the inner diameter D of the blocking medium 3 is 1 mm≤1.5 mm, such as 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc.
[0035] It has been verified through experiments that when the inner diameter D of the blocking medium 3 is greater than 1.5 mm, the provision of multiple electrode wires 11 can indeed achieve a noise reduction effect, but the degree of noise reduction is limited, and the human ear can still hear obvious discharge sounds, which will affect the user's hearing comfort. When the inner diameter D of the blocking medium 3 is less than or equal to 1.5 mm, the use of a multi-wire solution can significantly improve the noise situation and ensure the user's hearing comfort.
[0036] Of course, the inner diameter D of the blocking medium 3 is not limited to the above range and can be adjusted as needed.
[0037] In some exemplary embodiments, the diameter d of the electrode wire 11 is 0.2 mm≤0.8 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.
[0038] If the diameter of the electrode wire 11 is too thin, corona discharge is likely to occur, which affects the stability and uniformity of the dielectric barrier discharge; if the diameter of the electrode wire 11 is too thick, the surface area of the first electrode 1 will be increased, making it difficult to stimulate discharge when the electric field strength is not large enough. It has been verified by experiments that the diameter d of the electrode wire 11 is within the above range, which can avoid the above problems.
[0039] Of course, the diameter d of the electrode wire 11 is not limited to the above range and can be adjusted as needed.
[0040] In some embodiments, the diameters of the plurality of electrode wires 11 are equal.
[0041] In other embodiments, the diameters of the plurality of electrode wires 11 are not equal or not equal. The maximum diameter of the plurality of electrode wires 11 is dmax, the minimum diameter of the plurality of electrode wires 11 is dmin, and dmin≥dmax / 2. This helps to avoid the problem of corona discharge or difficulty in stimulating discharge caused by a single electrode wire 11 being too thin or too thick.
[0042] In some exemplary embodiments, 0.6 mm≤the sum of the diameters of the plurality of electrode wires 11≤1 mm, such as 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc.
[0043] If the sum of the diameters of the plurality of electrode wires 11 is too large, the surface area of the internal electrode will be too large, making discharge too difficult; if the sum of the diameters of the plurality of electrode wires 11 is too small, there will be too much air in the blocking medium 3, resulting in excessive noise. It has been verified by experiments that the sum of the diameters of the plurality of electrode wires 11 is within the above range, which can avoid the above problems.
[0044] Of course, the sum of the diameters of the plurality of electrode wires 11 is not limited to the above range and can be adjusted as needed.
[0045] The embodiment of the present application also provides an air treatment device, including a dielectric barrier discharge device as in any one of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.
[0046] In some exemplary embodiments, the air handling device is provided with an air duct and an air inlet and an air outlet connected to the air duct. The dielectric barrier discharge device can be arranged at the air inlet, in the air duct, or at the air outlet.
[0047] In some exemplary embodiments, the air treatment device may be an air conditioner, an air purifier, a humidifier, a dehumidifier, or other device having an air treatment function.
[0048] In some exemplary embodiments, the air volume of the air handling equipment is 1200m 3 / h.
[0049] The following describes the sterilization effects, ozone results and sound results of some examples and comparative examples (air volume is 1200m 3 / h).
[0050]
[0051] It can be seen from the experimental results of the above embodiments and comparative examples that in the single-filament scheme (Comparative Examples 1 to 3), compared with Comparative Example 1, Comparative Examples 2 and 3 are beneficial to reducing noise by increasing the diameter of the electrode wire, but will lead to an increase in ozone concentration.
[0052] In the multi-filament scheme (Examples 1 to 7):
[0053] Example 1 uses two electrode wires, and the ozone concentration generated is low, but the sum of the diameters of the electrode wires is too small, and the sterilization rate is lower than that of Comparative Example 1. Compared with Example 1, Example 2 uses two electrode wires, and the sum of the diameters of the electrode wires is in the range of 0.6mm to 1mm, the sterilization rate is increased, and a better noise reduction effect is achieved. However, the diameter ratio of the two electrode wires is too large, and the ozone concentration generated is increased. Compared with Example 2, Example 3 uses two electrode wires and the diameter ratio of the two electrode wires is appropriate, the sterilization rate is increased, and the ozone concentration generated is reduced.
[0054] Both Example 4 and Example 5 use three electrode wires with equal diameters, and the total diameter of the electrode wires is in the range of 0.6 mm to 1 mm. The sterilization rate is high, the ozone concentration generated is low, and the noise generated is also small.
[0055] Example 6 uses 5 electrode wires of equal diameter, and the noise reduction effect is good, but the sterilization rate is relatively low. Example 7 uses 10 electrode wires of equal diameter, but the diameter of the electrode wire is too small. Although the generated ozone concentration is low and the noise reduction effect is also good, the sterilization rate is relatively low.
[0056] It can be concluded that the diameter of the electrode wire, the sum of the diameters of multiple electrode wires, and the ratio of the maximum diameter to the minimum diameter of the electrode wire all have an impact on the performance of the dielectric barrier discharge device (noise reduction effect, sterilization rate, and ozone generation). When the diameter of the electrode wire meets the limitations in the aforementioned scheme (0.2mm≤d<0.8mm, 0.6mm≤d1+d2+……dn≤1mm, dmin≥dmax / 2), it is beneficial to take into account the noise reduction effect, improve the sterilization rate, and reduce the ozone concentration.
[0057] In the description of the present application, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0060] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0062] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A dielectric barrier discharge device, characterized in that: include: A dielectric barrier discharge assembly, comprising a first electrode, a second electrode, and a barrier medium separating the first electrode from the second electrode, the barrier medium being cylindrical, the inner space of the barrier medium forming a discharge space, the first electrode being an inner electrode, the second electrode being an outer electrode, the first electrode being arranged into an electrode bundle, and the electrode bundle comprising a plurality of electrode wires arranged side by side; The power supply module is electrically connected to the first electrode and the second electrode, and is configured to apply voltage to the first electrode and the second electrode so that the dielectric barrier discharge component generates dielectric barrier discharge in the discharge space.
2. The dielectric barrier discharge device according to claim 1, characterized in that: The output voltage of the power supply module is less than 10 kV, and the inner diameter D of the blocking medium is greater than or equal to 1 mm.
3. The dielectric barrier discharge device according to claim 2, characterized in that: 1mm≤the inner diameter D of the blocking medium≤1.5mm.
4. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: 0.2mm≤the diameter d of the electrode wire≤0.8mm.
5. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: The diameters of the plurality of electrode wires are equal.
6. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: The diameters of the plurality of electrode wires are completely unequal or unequal, the maximum diameter of the plurality of electrode wires is recorded as dmax, the minimum diameter of the plurality of electrode wires is recorded as dmin, and dmin≥dmax / 2.
7. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: 0.6 mm ≤ the sum of the diameters of the plurality of electrode wires ≤ 1 mm.
8. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: The electrode bundle is arranged in the central area of the blocking medium.
9. The dielectric barrier discharge device according to any one of claims 1 to 3, characterized in that: The electrode wire is configured as a straight electrode; and / or the second electrode is configured as a spiral electrode, and the spiral electrode is coiled around the outer surface of the blocking medium.
10. An air treatment device, characterized in that: The invention comprises a dielectric barrier discharge device as claimed in any one of claims 1 to 9.