Spiral electrode and aerosol generating device

Abstract

The invention provides a spiral electrode and an aerosol generating device, and belongs to the technical field of aerosol generating devices.The spiral electrode comprises a framework layer, a first electrode layer and a second electrode layer, the framework layer is of a non-conductive three-dimensional spiral structure, and the cross section of the framework layer is of a flat structure; the first electrode is spirally arranged, and the first electrode is provided with a first plane used for being connected with the flat structure of the framework layer; the second electrode is spirally arranged, and the second electrode is provided with a second plane used for being connected with the flat structure of the framework layer; the first electrode, the skeleton layer and the second electrode are sequentially stacked, and the first plane is parallel to the second plane; according to the spiral electrode, the reaction area is large, error tolerance during production is improved through the elasticity of the three-dimensional spiral structure of the spiral electrode, and the problems that other high-voltage electrode structures are high in cost, low in production efficiency and high in reject ratio due to high precision required by design are solved.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol generating devices, and in particular to a spiral electrode and an aerosol generating device. Background Art

[0002] The aerosol generating device comprises a containing device and electrodes arranged at intervals in the containing device. When working, an aerosol forming substrate is arranged in the containing device, and an aerosol is generated through a reaction between two electrodes arranged at intervals.

[0003] In the prior art, two electrodes arranged at intervals include: plate-type electrodes, tungsten wire electrodes, and needle-tip sleeve hollow plate combination electrodes. Among them, the plate-type electrode is made of sheet metal material, which is heavy and easy to produce oxidizing substances such as ozone and hydroxyl radicals when used in an oxygen-containing environment, and it is easy to rust due to the reaction of these oxidizing substances. At the same time, the plate-type electrodes require a high degree of parallelism between the plates, and the straightness of the plates themselves is required to be high. It is difficult to resist gravity bending when placed in a horizontal direction.

[0004] Tungsten wire electrodes require extremely fine tungsten wire, which is easily knotted, bent, and twisted during the production and assembly process, resulting in nodes, bulges and other defects, resulting in a high defect rate.

[0005] The needle tip sleeve hollow plate combination electrode adopts needle tip discharge, and the discharge area is too small, resulting in the inability to increase the spatial discharge density.

[0006] Therefore, based on the above-mentioned defects of plate-type electrodes, tungsten wire electrodes and needle-tip sleeve hollow plate combination electrodes, it is necessary to design an electrode structure with a large discharge area, high parallelism between the two electrodes, and not easy to deform during the production and assembly process. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art such as small electrode discharge area, inability to ensure parallelism and easy deformation during assembly, thereby providing a spiral electrode and an aerosol generating device having the spiral electrode.

[0008] In order to solve the above technical problems, the present invention provides a spiral electrode, comprising:

[0009] The skeleton layer is a non-conductive three-dimensional spiral structure, and the cross section of the skeleton layer is a flat structure;

[0010] A first electrode is spirally arranged, wherein the first electrode has a first plane of a flat structure for connecting to the skeleton layer;

[0011] The second electrode is spirally arranged, and the second electrode has a second plane of a flat structure for connecting to the skeleton layer; the first electrode, the skeleton layer, and the second electrode are stacked in sequence, and the first plane is parallel to the second plane.

[0012] Optionally, the skeleton layer is continuously arranged along the interval between the first electrode and the second electrode.

[0013] Optionally, the resistance of the skeleton layer is not less than 1000 MΩ.

[0014] Optionally, the first electrode is used to apply voltage V1, and the second electrode is used to apply voltage V2, wherein V1>V2; a hydrophobic layer is provided on the surface of the first electrode, and a hydrophilic layer or a micro-water storage layer is provided on the surface of the second electrode.

[0015] Optionally, the hydrophobic layer is a black silicon layer.

[0016] Optionally, the hydrophobic layer is obtained by micro-processing the metal surface of the first electrode.

[0017] Optionally, the micro water storage layer is one of a foam metal layer, a capillary layer, an activated carbon layer or a zeolite layer.

[0018] Optionally, the width of the first electrode, the second electrode and the skeleton layer is L, and the spiral radius is r, wherein L≤0.5r.

[0019] Optionally, the distance between each turn of the first electrode and the second electrode is D, wherein D≥|V1-V2|, the unit of D is mm, and the unit of V is kV.

[0020] The present invention provides an aerosol generating device, characterized in that it comprises: a spiral electrode as described in any one of the above schemes and a reaction chamber for accommodating the spiral electrode.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The spiral electrode provided by the present invention has a large reaction area and utilizes the elasticity of its own three-dimensional spiral structure to improve the error tolerance during production, thereby overcoming the problems of high cost, low production efficiency and high defect rate caused by the high precision required in the design of other high-voltage electrode structures. Specifically, since the first electrode, the skeleton layer and the second electrode are stacked and arranged, the first electrode and the second electrode are separated by the skeleton layer, thereby ensuring the uniformity of the interval between the two electrodes, and there will be no problem of contact between the two electrodes. In addition, due to the use of a three-dimensional spiral structure, it can have better anti-gravity bending performance when placed, thereby ensuring the parallelism between the two electrodes. In addition, the skeleton layer adopts a flat structure, and the two electrodes are respectively connected to the two surfaces of the flat structure through a plane, so that there is a larger reaction area between the two electrodes, thereby improving the reaction efficiency.

[0023] 2. The spiral electrode provided by the present invention has a hydrophobic layer arranged on the surface of the first electrode connected to a higher voltage, and a hydrophilic layer arranged on the surface of the second electrode connected to a lower voltage or grounded. This arrangement can prevent creepage between the first electrode and the second electrode.

[0024] 3. The aerosol generating device provided by the present invention adopts the above-mentioned spiral electrode. When working, the humidity of the environmental condition is maintained at more than 85%. When the first electrode and the second electrode of the spiral electrode are simultaneously powered by high voltage, the high humidity in the air can be regarded as a weak electrolytic cell. The circuit is emitted by the first electrode, and the moisture in the air moves freely in the high-voltage electric field and moves to the second electrode to form an electrolytic circuit; the second electrode of the spiral electrode becomes the cathode, and a certain amount of O2- and H+ will be generated on the cathode surface. At the same time, a chemical reaction is formed in the high-humidity gas phase environment to generate hydroxyl free radicals, H2O2 and other substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A front view of a specific implementation of a spiral electrode provided in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 for Figure 2 Stereoscopic view of the end region of the spiral electrode.

[0029] Description of reference numerals:

[0030] 1. First electrode; 2. Skeleton layer; 3. Second electrode. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] The spiral electrode provided in this embodiment can be used in an aerosol generating device to generate hydroxyl radicals, H2O2 and other substances by reacting in the reaction chamber of the aerosol generating device.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, a specific implementation of the spiral electrode provided in this embodiment includes: a first electrode 1, a skeleton layer 2 and a second electrode 3 stacked in sequence, wherein the skeleton layer 2 is a non-conductive three-dimensional spiral structure, and the cross-section of the skeleton layer 2 is a flat structure.

[0037] The first electrode 1 is spirally arranged, and the first electrode 1 has a first plane of a flat structure for connecting to the skeleton layer 2; the second electrode 3 is spirally arranged, and the second electrode 3 has a second plane of a flat structure for connecting to the skeleton layer 2; after the first electrode 1, the skeleton layer 2 and the second electrode 3 are stacked and connected in sequence, the first plane is parallel to the second plane.

[0038] The spiral electrode provided in this embodiment is stacked with the first electrode 1, the skeleton layer 2 and the second electrode 3, and the first electrode 1 and the second electrode 3 are separated by the skeleton layer 2, thereby ensuring the uniformity of the interval between the two electrodes, and there will be no problem of contact between the two electrodes. In addition, due to the adoption of a three-dimensional spiral structure, when placed, it can have better anti-gravity bending performance, thereby ensuring the parallelism between the two electrodes. This structure, even if there is deformation, is an overall deformation, and has little effect on the parallelism between the two electrodes connected to the skeleton layer 2. In addition, the skeleton layer 2 adopts a flat structure, and the two electrodes are respectively connected to the two surfaces of the flat structure through a plane, so that there is a larger reaction area between the two electrodes, thereby improving the reaction efficiency.

[0039] It should be noted that, in this embodiment, the skeleton layer 2 is continuously arranged along the interval between the first electrode 1 and the second electrode 3. Such an arrangement can ensure the uniformity of the interval between the two electrodes and improve the overall stability. In addition, as an alternative embodiment, the skeleton layer 2 can also be arranged in multiple sections along the interval between the first electrode 1 and the second electrode 3. Specifically, the multiple sections can be uniform or non-uniform, which can also achieve the purpose of maintaining the uniformity of the interval between the two electrodes.

[0040] In addition, the spiral electrode described in this embodiment is mainly used in an aerosol generating device, so the resistance of the skeleton layer 2 is required to be no less than 1000MΩ. In addition, as an alternative embodiment, when applied to other fields, the range of its resistance value can also be adaptively adjusted. Specifically, the skeleton layer 2 can be made of materials such as bakelite, polycarbonate (PC), glass, etc., and other non-conductive materials can also be used, which are not restrictive.

[0041] In the spiral electrode provided in this embodiment, the first electrode 1 is used to apply voltage V1, and the second electrode 3 is used to apply voltage V2, wherein V1>V2; a hydrophobic layer is provided on the surface of the first electrode 1, and a hydrophilic layer or a micro-water storage layer is provided on the surface of the second electrode 3. In other words, a hydrophobic layer is provided on the surface of the first electrode 1 for applying a higher voltage, and a hydrophilic layer or a micro-water storage layer is provided on the surface of the second electrode 3 for applying a lower voltage. The provision of the hydrophobic layer can reduce the creepage between the two electrodes; the provision of the hydrophilic layer and the micro-water storage layer can increase the humidity of the reaction zone and improve the reaction efficiency.

[0042] The hydrophobic layer may be a black silicon layer. Alternatively, the hydrophobic layer may be obtained by micro-processing the metal surface of the first electrode 1. For example, the metal surface may be processed into a velvet structure such as that on a lotus leaf.

[0043] The hydrophilic layer may be a hydrophilic coating, such as a nano hydrophilic coating. The micro water storage layer may be a foam metal layer, a capillary layer, an activated carbon layer or a zeolite layer. The foam metal layer may be a nickel foam, an aluminum foam, etc. The capillary layer may be formed by capillary lamination. In addition, as an alternative embodiment, the hydrophilic layer may also be made of materials such as graphene, carbon fiber, activated carbon, etc.

[0044] like Figure 1 , Figure 2 As shown, in the spiral electrode provided in this embodiment, the width of the first electrode 1, the second electrode 3 and the skeleton layer 2 is L, and the spiral radius is r, where L≤0.5r. This setting is used to avoid radial breakdown of the spiral electrode and ensure safety; the distance between each turn of the first electrode 1 and the second electrode 3 is D, where D≥|V1-V2|, the unit of D is mm, and the unit of V is kV. This setting is used to avoid axial breakdown between the two electrodes and ensure safety. It should be noted that the above dimensions are set according to the voltage when used in the aerosol generating device. When used in other places, they can be adaptively adjusted, and these are not restrictive.

[0045] In addition, this embodiment also provides an aerosol generating device, including: the spiral electrode described in the above embodiment and a reaction chamber for accommodating the spiral electrode. The humidity in the reaction chamber can be set to be higher than 85%, so that the humidity of the reaction zone can be ensured. Of course, this is not restrictive, and the humidity in the reaction chamber can also be set to other values ​​as needed. During operation, when the first electrode 1 and the second electrode 3 of the spiral electrode are simultaneously powered by high voltage electricity, the high humidity in the air can be regarded as a weak electrolytic cell, and the circuit is emitted by the first electrode 1 through the free movement of moisture in the air in the high-voltage electric field, and moves to the second electrode 3 to form an electrolysis circuit. The second electrode 3 becomes the cathode, and a certain amount of O2- and H+ will be generated on the cathode surface, and a chemical reaction will be formed in a high-humidity gas phase environment to generate hydroxyl radicals, H2O2 and other substances.

[0046] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A spiral electrode, characterized in that: include: The skeleton layer (2) is a non-conductive three-dimensional spiral structure, and the cross section of the skeleton layer (2) is a flat structure; A first electrode (1) is arranged in a spiral, wherein the first electrode (1) has a first plane of a flat structure for connecting to the skeleton layer (2); The second electrode (3) is arranged in a spiral, and the second electrode (3) has a second plane of a flat structure for connecting to the skeleton layer (2); the first electrode (1), the skeleton layer (2), and the second electrode (3) are stacked in sequence, and the first plane is parallel to the second plane.

2. The spiral electrode according to claim 1, characterized in that: The skeleton layer (2) is continuously arranged along the interval between the first electrode (1) and the second electrode (3).

3. The spiral electrode according to claim 1, characterized in that: The resistance of the skeleton layer (2) is not less than 1000 MΩ.

4. The spiral electrode according to claim 1, characterized in that: The first electrode (1) is used to apply a voltage V1, and the second electrode (3) is used to apply a voltage V2, wherein V1>V2; a hydrophobic layer is provided on the surface of the first electrode (1), and a hydrophilic layer or a micro-water storage layer is provided on the surface of the second electrode (3).

5. The spiral electrode according to claim 4, characterized in that: The hydrophobic layer is a black silicon layer.

6. The spiral electrode according to claim 4, characterized in that: The hydrophobic layer is obtained by micro-processing the metal surface of the first electrode (1).

7. The spiral electrode according to claim 4, characterized in that: The micro water storage layer is one of a foam metal layer, a capillary layer, an activated carbon layer or a zeolite layer.

8. The spiral electrode according to any one of claims 1 to 7, characterized in that: The width of the first electrode (1), the second electrode (3) and the skeleton layer (2) is L, and the spiral radius is r, wherein L≤0.5r.

9. The spiral electrode according to any one of claims 1 to 7, characterized in that: The distance between each turn of the first electrode (1) and the second electrode (3) is D, wherein D≥|V1-V2|, the unit of D is mm, and the unit of V is kV.

10. An aerosol generating device, characterized in that: include: The spiral electrode according to any one of claims 1 to 9 and a reaction chamber for accommodating the spiral electrode.

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