Coil winding with air interlayer and aerosol generating device

Abstract

To provide coil winding including an air intermediate layer and an aerosol generating device having the same.SOLUTION: Coil winding includes a bracket body 1 in which an air groove 2 is provided on the outer surface, coils 3 are wound on the outer surface of the bracket body 1 and at least partially cover the air groove 2, and an air intermediate layer is formed by the air groove 2 between the bracket body 1 and the coils 3. The present invention forms an air intermediate layer between a coil and a bracket by means of a method of opening an air groove in a coil bracket to reduce heat conduction to the coil of the bracket, the existence of the air intermediate layer is advantageous for heat radiation of the self-heat generation and a coil loss is reduced.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of aerosol generating devices, in particular electromagnetic smoking devices, and more particularly to a coil winding with an air interlayer and an aerosol generating device. [Background technology]

[0002] Aerosol is a colloidal dispersion formed when small particles of solid or liquid are dispersed and suspended in a gas medium, and aerosols can be absorbed into the human body through the respiratory system, providing users with a new alternative means of absorption. For example, atomizing devices that generate aerosols by baking or heating herbal or paste-like aerosol-generating substrates are applied in various fields to provide users with inhalable aerosols instead of traditional product forms and absorption means.

[0003] Conventional baking type aerosol generators can also use the electromagnetic induction heating principle to generate heat in a heating material to bake and heat the aerosol-generating substrate for atomization. The principle of electromagnetic induction heating is as follows. That is, an alternating current generated by an induction heating power supply generates an alternating magnetic field through an inductor (i.e., a coil), and a magnetic conductive susceptor (i.e., a heating element) cuts the alternating magnetic field lines therein, generating an alternating current (i.e., eddy current) inside the heating element. The eddy current causes atoms inside the heating element to move randomly at high speed, and the atoms collide and rub against each other to generate thermal energy, which further heats the aerosol-generating substrate. Among conventional electromagnetic heating aerosol generators, one type is one in which a bracket to which a coil winding is fixed adopts a direct winding method, that is, the coil is directly wound on the bracket one turn at a time in close contact with the bracket and the coil is in direct contact with the surface of the bracket, and the other type is one in which a winding fixing bracket for winding the coil is provided separately, and the inside of the winding fixing bracket is a tubular bracket. The problem with the former is that when the coil and the bracket are in close contact with each other and the heating element inside the bracket heats up, heat conduction occurs, causing the coil temperature to rise too quickly, leading to the progression of wire loss, or when the inside is insulated and the coil heats up by itself, the coils are closely arranged and in close contact with the bracket, so there is no space for the coil to dissipate heat, causing the temperature to become excessively high, leading to coil loss.The latter can improve the heat dissipation of the coil by separating the coil and the tubular bracket, but it increases the number of parts, complicates the structure, and ultimately leads to too-fast heat dissipation of the coil and bracket, leading to large energy loss. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to solve the above problems, the present invention is proposed.

[0005] The coil of the present invention refers to a circular conductor winding, and is particularly applicable to the field of inductance in the present invention. [Means for solving the problem]

[0006] A first aspect of the present invention provides a coil winding with an air intermediate layer, the coil winding including a bracket body 1 having an air groove 2 on its outer surface, a coil 3 wound around the outer surface of the bracket body 1 and at least partially covering the air groove 2, and an air intermediate layer formed between the bracket body 1 and the coil 3 by the air groove 2.

[0007] Optionally, there are a plurality of the air grooves 2. The distribution of the plurality of air grooves 2 is not limited, and may be uniformly or randomly distributed. More optionally, the air grooves 2 are consistent with the distribution of the coil after winding, that is, the air grooves 2 are provided correspondingly on the outer surface of the bracket body 1 where the coil is covered, and when a gap 5 is provided between the coils, there is no need to provide the air grooves 2 on the outer surface of the gap 5.

[0008] Optionally, the coil 3 completely covers the air groove 2. That is, the air groove 2 is completely located between the bracket body 1 and the coil 3, and is not exposed after the coil 3 is wound.

[0009] Optionally, the axial width H1 of the air groove 2 is smaller than the axial width H2 of one of the coils 3, and the radial depth T of the air groove 2 is 0.1 mm or more (T≧0.1 mm). In an optional embodiment, the axial width and radial depth of the air groove 2 are limited, but the circumferential length of the air groove is not limited. That is, the air groove 2 may extend only partially along the circumferential direction, or all the places covered by the coil according to the extension direction of the coil may have an air groove.

[0010] Optionally, the outer surface of the bracket body 1 is further provided with a protrusion 4 , the protrusion 4 being provided between at least two single coils of the coil 3 .

[0011] Optionally, said protrusions 4 are multiple.

[0012] Optionally, the radial height of the protrusion 4 is smaller than the radial height of the coil. In this way, the protrusion 4 can realize positioning on the coil winding and minimize the contact between the coil and the bracket, thereby achieving the technical effect of increasing the heat dissipation area of ​​the coil and reducing the heat conduction of the bracket to the coil. In other embodiments, the number, position, axial width, radial depth, and circumferential length of the protrusions may not be particularly limited as long as they are suited to the positioning and winding of the coil and the fixing of the coil after winding. In addition, positioning the coil is advantageous for the positional correspondence between the coil and the air groove.

[0013] Optionally, after the coil winding is wound, a gap 5 is provided between at least some of the coils 3. The gap 5 may be provided between adjacent coils, or only between some of the adjacent coils. The gap 5 is advantageous for heat dissipation of the coil. The role of the protrusion 4 is to position the coil, thereby ensuring that the coil is arranged in a combination of dense and sparse windings, and ensuring the stability of the gap 5.

[0014] A second aspect of the present invention provides an aerosol generating device including a coil winding with an air intermediate layer as described in the first aspect of the present invention, a heating element 6 being provided inside the bracket body 1, and the heating element being inductively heated by the coil 3.

[0015] Optionally, a shielding layer 9 is provided on the outside of the coil 3. After the coil winding is completed, the shielding layer 9 itself is attached and fixed by the back rubber, thereby realizing the fixation of the winding of the entire coil.

[0016] Optionally, the bracket body 1 is provided with a heating element upper cover 7 at the top and a heating element lower cover 8 at the bottom.

[0017] Optionally, a temperature measuring assembly 10 is further provided on the surface of said heating element 6 .

[0018] The aerosol generating device of the present invention is an electromagnetic aerosol generating device, and in order to ensure the normal use of the aerosol generating device, the aerosol generating device of the present invention further includes a power source, a controller, a housing, etc. for conventional smoking accessories in this field.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The outer surface of the bracket body 1 of the coil winding of the present invention is provided with an air groove 2, and the coil 3 is wound on the outer surface of the bracket body 1 with at least a portion covering the air groove 2. By opening an air groove in the coil bracket, an air intermediate layer is formed between the coil and the bracket, so that an air insulating layer is formed between the bracket body 1 and the coil 3, reducing the heat conduction of the bracket to the coil and reducing the coil loss. 2. In a more selective embodiment, the outer surface of the bracket body 1 is provided with a protrusion 4, which can be used to position the coil when winding it and to fix the coil after winding it. In addition, positioning the coil is advantageous for the positional correspondence between the coil and the air groove. 3. In a more optional embodiment, after the coil windings are wound, gaps 5 are provided between at least some of the coils 3, so that heat from the coil itself can be dissipated through the gaps 5. 4. After actual measurements and comparison of this module, the coil bracket with air grooves reduces the module temperature (i.e., the temperature of the outermost shielding layer of the heating unit) by 6.53°C and the surface temperature of the coil lead wire by 4.43°C compared with the conventional adhesive winding, thereby effectively reducing the coil surface temperature and reducing coil loss. 5. After actual measurement and comparison of this module, the coil bracket configuration with air grooves has an energy consumption that is about 14 mWh lower than the conventional single winding fixing bracket configuration, achieving the technical effect of further reducing the overall energy consumption of the device. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a schematic diagram of a partial structure of an aerosol generating device provided by one embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of a partial structure of a coil winding provided by an embodiment of the present invention. [Diagram 3] FIG. 2 is a schematic diagram of another partial structure of a coil winding provided by an embodiment of the present invention. [Figure 4] FIG. 2 is a perspective view of a coil winding bracket body according to an embodiment of the present invention, in which no coil is wound on the surface of the bracket body; [Diagram 5] FIG. 2 is a perspective view of a coil winding provided according to an embodiment of the present invention after the coil is wound on the surface of the bracket body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The present invention will now be described in more detail with reference to examples.

[0022] Those skilled in the art will understand that the following examples are merely illustrative of the present invention and do not limit the scope of the present invention. The examples do not describe specific techniques or conditions, but are carried out according to techniques or conditions described in the technical literature or according to product instructions. The materials or equipment used are not specified by manufacturer, and are all conventional products available for purchase.

[0023] Those skilled in the art will understand that the singular forms "a", "one", "said" and "the" as used herein include the plural, unless otherwise indicated. It should be further understood that the term "comprising" as used in the present specification means the presence of the stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. When an element is referred to as being "connected" to another element, it should be understood that there may be a direct connection to the other element or intermediate elements may be present. Also, as used herein, "connected" may include wireless connections.

[0024] In the description of the present invention, "plurality" means two or more than two, unless otherwise specified. The orientation or status indicated by the terms "in", "up", "down", etc. is based on the orientation or status indicated in the drawings, and is only for ease of explanation and simplification of the present invention, and does not mean or imply that the devices or elements referred to necessarily have a specific orientation, and must be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, unless otherwise clearly specified or limited, the terms "attached", "connected", and "provided" should be understood in a broad sense, and may mean, for example, a fixed connection, a detachable connection, or an integral connection. In addition, they may be mechanically connected or electrically connected. They may be directly connected or indirectly connected via an intermediate medium. The specific meanings of the above terms in the present invention will be understood by those skilled in the art depending on the specific situation.

[0026] Those skilled in the art will understand that, unless otherwise defined, all terms used herein include technical and scientific terms having the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It is also to be understood that terms as defined in common dictionaries should be understood to have a meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined herein.

[0027] Comparative Example 1 In the conventional electromagnetic aerosol generating device, there is no air groove 2 or protrusion on the surface of the coil bracket, and the corresponding coil is directly wound tightly on the bracket one turn at a time, and the coil is in direct contact with the surface of the bracket.

[0028] Comparative Example 2 In conventional electromagnetic aerosol generating devices, a winding fixing bracket for winding a coil is provided, the inside of the winding fixing bracket is a tubular bracket, and the coil is tightly wound on the winding bracket. EXAMPLES

[0029] As shown in Figs. 1 to 5, an embodiment of the present invention provides a coil winding with an air intermediate layer and an aerosol generating device including the coil winding with the air intermediate layer.

[0030] Here, the coil winding with the air intermediate layer includes a bracket body 1, an air groove 2 is provided on the outer surface of the bracket body 1, a coil 3 is wound around the outer surface of the bracket body 1 and at least a portion of the coil 3 covers the air groove 2, and an air intermediate layer is formed between the bracket body 1 and the coil 3 by the air groove 2. As a result, an air insulating layer is formed between the bracket body 1 and the coil 3, reducing heat transfer to the coil 3 and reducing coil loss.

[0031] Exemplarily, the air grooves 2 are multiple and correspond to the distribution of the wound coil, i.e., the outer surface of the bracket body 1 covered by the coil is provided with corresponding air grooves 2, and the outer surface of the bracket body 1 not covered by the coil is not provided with air grooves 2. For example, in one optional embodiment, when a gap 5 is provided between a single coil of the coil, the outer surface of the bracket body 1 corresponding to the gap 5 is not provided with air grooves 2.

[0032] Exemplarily, the coil 3 completely covers the air groove 2. Since the air groove 2 is already completely covered, the air layer between the coil and the bracket is relatively sealed, so that an air insulation layer is formed between the coil and the bracket, which can further reduce the heat conduction from the bracket to the coil and reduce the coil loss.

[0033] As shown in FIG. 2, if the axial width of the air groove 2 is H1 and the axial width of the coil 3 is H2, when H1 is equal to or less than H2, one coil can relatively seal the air groove on the bracket. In this way, a relatively sealed air groove is formed between the coil and the bracket, and a technical effect of air insulation is obtained. Exemplarily, the axial width H1 of the air groove 2 is 1.0 mm, which is smaller than the axial width H2 of one coil 3, which is 1.65 mm. Also, for example, the radial depth T of the air groove 2 is 0.3 mm.

[0034] As shown in FIG. 3, exemplarily, the outer surface of the bracket body 1 is further provided with a protrusion 4, and the protrusion 4 is provided between at least two single coils of the coil 3. The protrusion 4 may be one or more, and generally, may be more than one. The protrusion 4 is used for winding the coil winding, and plays a role of fixing and positioning the coil winding. In some optional embodiments, a space is provided between the coils of the coil winding so as to achieve the technical effect of better heat dissipation of the self-heating of the coil. By setting the position and size of the protrusion, the space between the individual coils when winding the coil winding can be controlled. In general, the position and size of the protrusion 4 are adapted to the size of the individual coils of the coil winding so as to achieve the desired heat dissipation effect. For example, in one optional embodiment, as shown in FIG. 3, the radial height H3 of the protrusion 4 is 0.5 mm, and the radial height H4 of the coil is 0.8 mm. However, the radial height H3 of the protrusion 4 is smaller than the radial height H4 of the coil, so that the coil can be better positioned. Since the protrusion belongs to a part of the bracket, it may conduct some heat. In another optional embodiment, the radial height H3 of the protrusion 4 is smaller than the radial height H4 of the coil, and the protrusion 4 can realize positioning on the coil winding and minimize the contact between the coil and the bracket, thereby achieving the technical effect of increasing the heat dissipation area of ​​the coil and reducing the heat conduction of the bracket to the coil.

[0035] After the coil winding is wound around the coil, gaps 5 are provided between at least some of the coils 3. Here, the gaps 5 between the coils after winding may be provided uniformly or unevenly. Exemplarily, as shown in FIG. 1, the coil after winding is roughly divided into three parts in the axial direction, with coils of 3 to 4 turns at the top and bottom, and a coil of one turn in the middle, and one gap 5 is provided between the coils in the middle layer and the coils in the top and bottom, and protrusions 4 are provided on both sides of the corresponding coils in the middle layer. The protrusions 4 realize the positioning of the coils and the provision of the gaps. Here, the intervals between the coils of 3 to 4 turns at the top and bottom are smaller than the intervals between the top and middle and between the bottom and middle. That is, relatively speaking, the coils of 3 to 4 turns at the top and bottom are densely wound, and the middle coil is loosely wound, and the intervals between the coils may be gradually changed. In this embodiment, the coils are arranged in a combination of dense and loose winding, and these intervals allow the self-heating of the coils to be well dissipated, making it possible to design different heat dissipation patterns depending on the product.

[0036] The aerosol generating device provided by the embodiment of the present invention includes a coil winding 1 with an air intermediate layer as described in the above embodiment, a heating element 6 is provided inside the bracket body 1, and a shielding layer 9 is typically provided outside the coil 3. In some optional embodiments, the bracket body 1 is provided with a heating element upper cover 7 at the top and a heating element lower cover 8 at the bottom. In some optional embodiments, a temperature measuring assembly 10 is further provided on the surface of the heating element 6.

[0037] Through actual measurement comparison of this module, the coil bracket with air groove of this embodiment reduced the module surface temperature by 6.53°C and the coil lead surface temperature by 4.43°C compared to the conventional adhesive winding embodiment of Comparative Example 1. For specific data, please refer to Table 1, which shows a temperature comparison table between the conventional embodiment and the air layer embodiment.

[0038] [Table 1]

[0039] Through actual measurement comparison of this module, the coil bracket with air groove of this embodiment had energy consumption about 14 mWh lower than the conventional single winding fixing bracket of Comparative Example 2. For specific data, please refer to the energy consumption comparison table between the conventional embodiment and the air layer embodiment shown in Table 2.

[0040] [Table 2]

[0041] The coil winding and aerosol generating device provided by the embodiment of the present invention provides an air groove on the outer surface of the bracket body to form an air layer between the coil and the bracket, reducing the heat conduction from the bracket to the coil, and provides gaps between the individual coils by using protrusions, which is favorable for dissipating the self-heating heat of the coil and reduces coil loss. Compared with the prior art, the energy consumption and module temperature can be significantly reduced, and the module loss can be reduced.

[0042] The above is merely an embodiment of the present invention, and does not limit the scope of the patent of this application. Any equivalent configuration or equivalent flow conversion according to the contents of the specification and accompanying drawings of this application, or any directly or indirectly applicable to other related technical fields, is included in the protection scope of this application. [Explanation of symbols]

[0043] 1 Bracket body 2 Air Groove 3 Coil 4 protrusions 5. Gap 6 Heating element 7 Heating element top cover 8 Heating element bottom cover 9 Shielding layer 10 Temperature Measurement Assembly

Claims

1. 1. An electromagnetic heating coil winding with an air interlayer, comprising: The bracket body (1) includes an air groove (2) on its outer surface, A coil (3) is wound around the outer surface of the bracket body (1) and at least a portion of the coil covers the air groove (2); An intermediate air layer is formed between the bracket body (1) and the coil (3) by the air groove (2), The coil (3) completely covers the air groove (2). The present invention relates to a coil winding for electromagnetic heating having an air intermediate layer.

2. The air grooves (2) are multiple.

2. The electromagnetic heating coil winding with an air intermediate layer according to claim 1.

3. The axial width H1 of the air groove (2) is smaller than the axial width H2 of one of the coils (3), The radial depth T of the air groove (2) is 0.1 mm or more.

2. The electromagnetic heating coil winding with an air intermediate layer according to claim 1.

4. A protrusion (4) is further provided on the outer surface of the bracket body (1), The projection (4) is provided between at least two single coils of the coil (3).

2. The electromagnetic heating coil winding with an air intermediate layer according to claim 1.

5. The protrusions (4) are plural.

5. The electromagnetic heating coil winding with an air intermediate layer according to claim 4.

6. The radial height of the protrusion (4) is smaller than the radial height of the coil.

5. The electromagnetic heating coil winding with an air intermediate layer according to claim 4.

7. After the coil windings are wound, gaps (5) are provided between at least some of the coils (3).

2. The electromagnetic heating coil winding with an air intermediate layer according to claim 1.

8. An aerosol generating device, comprising: The coil winding for electromagnetic heating includes an air intermediate layer according to any one of claims 1 to 7, A heating element (6) is provided inside the bracket body (1), The heating element is inductively heated by the coil (3). An aerosol generating device characterized by:

9. A shielding layer (9) is provided on the outside of the coil (3).

9. The aerosol generating device according to claim 8.

10. An aerosol generating device, comprising: A coil winding with an air interlayer, the coil winding including a bracket body (1) having an air groove (2) on its outer surface; A coil (3) is wound around the outer surface of the bracket body (1) and at least a portion of the coil covers the air groove (2); An intermediate air layer is formed between the bracket body (1) and the coil (3) by the air groove (2), A heating element (6) is provided inside the bracket body (1), The heating element is inductively heated by the coil (3). An aerosol generating device characterized by:

11. A shielding layer (9) is provided on the outside of the coil (3). The aerosol generating device according to claim 10 .

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