JP2023172914A - Coil winding including air intermediate layer and aerosol generating device - Google Patents

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

The present invention belongs to the field of aerosol generation devices, and in particular relates to electromagnetic smoking devices, and more particularly to coil windings and aerosol generation devices with an air interlayer.

Aerosols are colloidal dispersions formed when small particles of solid or liquid are dispersed and suspended in a gaseous 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, atomization devices that produce aerosols by baking and heating herbal or pasty aerosol-generating substrates have been applied in various fields to provide users with inhalable aerosols instead of traditional product forms and absorption means. supply.

Conventional baking-type aerosol generating devices can also bake and heat an aerosol-generating substrate to atomize it by generating heat in a heat-generating material using the principle of electromagnetic induction heating. The principle of electromagnetic induction heating is as follows. In other words, the alternating current generated by the induction heating power supply generates an alternating magnetic field through the inductor (i.e., coil), and the magnetically conductive susceptor (i.e., the heating element) cuts the alternating magnetic field lines therein, causing the heating element to Alternating currents (ie, eddy currents) are generated internally. The eddy currents randomly move atoms inside the heating element at high speed, causing the atoms to collide and rub against each other, generating thermal energy that further heats the aerosol-generating substrate. Among the conventional electromagnetic heating aerosol generation devices, one kind uses a direct winding method, in which the bracket on which the coil winding is fixed is directly wound on the bracket, one winding at a time, and the coil is tightly wound on the bracket. The other type is one in which a winding fixing bracket for winding the coil is exclusively provided, and the inside of the winding fixing bracket is a tubular bracket. The problem with the former is that the coil and bracket are in close contact with each other, and when the heating element inside the bracket is heated, heat conduction occurs, causing the temperature of the coil to rise too quickly and lead to wire loss. If the coil self-heats when the inside is insulated, the coils are closely arranged and in close contact with the bracket, so there is no air gap for the coil to radiate heat. The temperature becomes excessively high, leading to coil loss. The latter can separate the coil and the tubular bracket to improve the heat dissipation of the coil, but it will increase the number of parts, complicate the configuration, and lead to too fast heat dissipation of the coil and the bracket, resulting in large energy loss.

The present invention is proposed to solve the above problems.

The coil of the present invention refers to an annular conducting wire winding, and the present invention is particularly applied to the field of inductance.

A first aspect of the present invention is a coil winding with an air intermediate layer, comprising a bracket body 1 provided with an air groove 2 on the outer surface, a coil 3 being wound around the outer surface of the bracket body 1. and an air intermediate layer that at least partially covers the air groove 2 and is formed between the bracket main body 1 and the coil 3 by the air groove 2. Provide coil windings.

Optionally, there are a plurality of said air grooves 2. The distribution of the plurality of air grooves 2 is not limited, and may be uniformly distributed or randomly distributed. More optionally, the air grooves 2 match the distribution of the coil after winding, i.e. the outer surface of the bracket body 1 covered with the coil is correspondingly provided with air grooves 2, so that the coil and the coil are If a gap 5 is provided between the two, it is not necessary to provide the air groove 2 on the outer surface of the gap 5.

Optionally, said coil 3 completely covers said 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.

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 alternative 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. In other words, the air grooves 2 may extend only partially along the circumferential direction, or all portions covered by the coils may have air grooves in the extending direction of the coils.

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

Optionally, there are a plurality of said protrusions 4.

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 the positioning to the coil winding, and also minimize the contact between the coil and the bracket, thereby increasing the heat dissipation area of the coil and reducing the heat conduction of the bracket to the coil. Achieve technical effects that will In other embodiments, the number, position, axial width, radial depth, and circumferential length of the protrusions are particularly limited as long as they are suitable for positioning, winding, and fixing the coil after winding. You don't have to. Further, positioning the coil is advantageous for positional correspondence between the coil and the air groove.

Optionally, gaps 5 are provided between at least some of said coils 3 after the coil windings have been wound. A gap 5 may be provided between adjacent coils, or a gap 5 may be provided only between some adjacent coils. The gap 5 is advantageous for heat radiation from the coil. The role of the protrusion 4 is to position the coil, thereby ensuring that the coil is arranged in a combination of close and loose windings and ensuring the stability of the gap 5.

A second aspect of the present invention is an aerosol generating device comprising a coil winding provided with an air intermediate layer according to the first aspect of the present invention, and a heating element 6 is provided inside the bracket body 1. and the heating element is heated by induction by the coil 3, providing an aerosol generation device.

Optionally, the coil 3 is provided with a shielding layer 9 on the outside. After the coil winding is completed, the back rubber of the shielding layer 9 itself is used to attach and fix the entire coil, thereby achieving fixation of the winding of the entire coil.

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.

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

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 is equipped with a power supply, a controller, a housing, etc. for a common smoking device in this field. Furthermore, it is equipped with.

Compared with the prior art, the present invention has the following beneficial effects.
1. An air groove 2 is provided on the outer surface of the bracket body 1 of the coil winding of the present invention, and the coil 3 is wound around the outer surface of the bracket body 1 and at least partially covers the air groove 2. , by forming an air groove in the coil bracket, an air intermediate layer is formed between the coil and the bracket, thereby forming an air insulation layer between the bracket body 1 and the coil 3, and the coil of the bracket is Reduces heat transfer to and reduces coil losses.
2. In a more selective embodiment, the outer surface of the bracket body 1 is provided with protrusions 4, which can be used for positioning and winding the coil and fixing the coil after winding. Further, positioning the coil is advantageous for positional correspondence between the coil and the air groove.
3. In a more selective embodiment, after the coil windings are wound, gaps 5 are provided between at least some of the coils 3, so that the heat of the coils themselves can be dissipated through the gaps 5. I can do it.
4. After comparing actual measurements of this module, we found that the coil bracket with air groove has a lower temperature of the module (i.e., the temperature of the outermost shielding layer of the heating unit) than the conventional pasted and wound coil bracket. The temperature on the surface of the coil lead wire is reduced by 4.43° C., which effectively reduces the temperature on the coil surface and reduces coil loss.
5. After comparing actual measurements of this module, the coil bracket mode with air groove has lower energy consumption by 14mWh compared to the conventional single winding fixing bracket mode, further reducing the overall energy consumption of the device. We have reached the technical effect of doing so.

1 is a schematic diagram of a partial structure of an aerosol generation device provided by an embodiment of the present invention; FIG. FIG. 3 is a schematic diagram of a partial structure of a coil winding provided by an embodiment of the present invention. FIG. 3 is a schematic diagram of another partial structure of a coil winding provided by an embodiment of the present invention. FIG. 3 is a perspective configuration diagram of a coil winding provided by an embodiment of the present invention when no coil is wound on the surface of the bracket body. FIG. 3 is a perspective view of the coil winding provided by an embodiment of the present invention after the coil is wound around the surface of the bracket body.

Hereinafter, the present invention will be explained in further detail with reference to Examples.

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

Those skilled in the art will understand that, as used herein, the singular forms "1," "a," "said," and "the" include the plural unless specifically stated otherwise. . The expression "comprising" as used in the specification of the invention refers to the presence of the described feature, integer, step, operation, element and/or component, but also the presence of one or more other features, integer, It is further to be understood that the presence or addition of steps, operations, elements, components and/or groups thereof is not excluded. When an element is referred to as being "connected" to another element, it is to be understood that it may be directly connected to the other element, or that intermediate elements may be present. Additionally, "connection" as used herein can include wireless connections.

In the description of the present invention, "plurality" means two or more than two, unless otherwise specified. The orientation or state relationship indicated by terms such as "inner", "upper", and "lower" are based on the orientation or state relationship shown in the drawings, and are intended to facilitate and simplify the explanation of the present invention. and are not intended to mean or imply that the devices or elements referred to must necessarily have a particular orientation, be constructed and operate in a particular orientation, and are not to be construed as limiting the invention. Shouldn't.

In the description of the present invention, terms such as "attachment," "connection," and "provision" should be understood in a broad sense unless otherwise clearly specified and limited, and for example, it may be a fixed connection or a detachable connection. The connection may be possible or may be integrally connected. Further, they may be connected mechanically or electrically. Further, they may be connected directly or indirectly 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 particular situation.

Those skilled in the art will understand that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be understood that the terms include: Additionally, terms as defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and unless otherwise defined herein, ideal It should also be understood that it should not be construed in an overly formal sense.

Comparative example 1
In the conventional electromagnetic aerosol generation device, there is no air groove 2 on the surface of the coil bracket, there is no protrusion, the corresponding coil is directly wound one turn at a time on the bracket, and the coil is in direct contact with the surface of the bracket. do.

Comparative example 2
In the conventional electromagnetic aerosol generation device, a winding fixing bracket is exclusively provided for winding the coil, and the inside of the winding fixing bracket is a tubular bracket, and the coil is tightly wound on the winding bracket.

As shown in FIGS. 1-5, embodiments of the present invention provide a coil winding with an air interlayer and an aerosol generation device including the coil winding with the air interlayer.

Here, the coil winding with an 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 on the outer surface of the bracket body 1, and at least A portion thereof covers the air groove 2, and an air intermediate layer is formed between the bracket main body 1 and the coil 3 by the air groove 2. As a result, an air insulation layer is formed between the bracket body 1 and the coil 3, reducing heat transfer to the coil 3 and reducing coil loss.

Exemplarily, the air grooves 2 are plural and correspond to the distribution of the wound coils, that is, the outer surface of the bracket body 1 covered with the coils is provided with corresponding air grooves 2, and the coils are covered with air grooves 2. Air grooves 2 are not provided on the outer surface of the bracket body 1 that is not covered by. For example, in one alternative embodiment, with gaps 5 provided between single coils of coils, the outer surface of said bracket body 1 corresponding to the gaps 5 is provided with air grooves 2. Not yet.

Illustratively, 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, which forms an air insulation layer between the coil and the bracket, and the air flow to the coil of the bracket is can further reduce heat conduction and reduce coil losses.

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, then when H1 is less than H2, one coil is inserted into the air groove on the bracket. can be relatively sealed. In this way, a relatively sealed air groove is formed between the coil and the bracket, and the technical effect of air insulation is obtained. Illustratively, 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. Further, for example, the radial depth T of the air groove 2 is 0.3 mm.

As shown in FIG. 3, illustratively, 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 coils 3. ing. The number of the protrusions 4 is one or more, and generally more than one. The protrusion 4 is used for winding the coil winding, and plays the role of fixing and positioning the coil winding. In some optional embodiments, spacing is provided between the coils of the coil winding to achieve the technical effect of better heat dissipation of the self-heating of the coils. By setting the position and size of the protrusions, it is possible to control the spacing between individual coils when winding the coil winding. Generally, the position and size of the projections 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 alternative 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, since the radial height H3 of the protrusion 4 is smaller than the radial height H4 of the coil, the coil can be positioned better. Since the protrusion is part of the bracket, it may conduct some heat. In another alternative 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 the positioning on the coil winding and the coil and the bracket. contact with the coil as much as possible, thereby realizing the technical effect of increasing the heat dissipation area of the coil and reducing the heat conduction of the bracket to the coil.

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 non-uniformly. Illustratively, as shown in FIG. 1, the coil after winding is roughly divided into three parts in the axial direction, with 3 to 4 turns each in the upper and lower parts, and 1 turn in the middle. There is a coil, one gap 5 is provided between the middle layer coil and the upper and lower coils, respectively, and protrusions 4 are provided on both sides of the corresponding middle layer coil. The protrusion 4 realizes positioning of the coil and installation of a gap. Here, the spacing between each of the three to four turns of the upper and lower coils is smaller than the spacing between the top and middle and the bottom and middle. That is, relatively speaking, the upper and lower coils each having 3 to 4 turns are tightly wound, and the middle coil is loosely wound, and the spacing between the coils may be gradually changed. In this embodiment, by arranging the coil in a combination of tightly wound and loosely wound coils, the self-heating of the coil can be effectively dissipated depending on the spacing between them, and it is possible to design different heat dissipation patterns depending on the product. It becomes.

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, and a heating element 6 is provided inside the bracket body 1, and usually, A shielding layer 9 is provided on the outside of the coil 3. In some alternative embodiments, the bracket body 1 is provided with a heating element upper lid 7 at the top and a heating element lower lid 8 at the bottom. In some alternative embodiments, the surface of the heating element 6 is further provided with a temperature measurement assembly 10.

After comparing actual measurements of this module, it was found that the air grooved coil bracket of this example lowers the module surface temperature by 6.53 degrees Celsius compared to the conventional pasted and wound coil bracket of Comparative Example 1. The temperature of the surface of the coil lead wire decreased by 4.43°C. For specific data, please refer to the temperature comparison table between the conventional mode and the air layer mode shown in Table 1.

After comparing actual measurements of this module, the energy consumption of the coil bracket with air grooves of this example was about 14 mwh lower than that of the conventional single winding fixing bracket of comparative example 2. For specific data, please refer to the energy consumption comparison table between the conventional mode and the air layer mode shown in Table 2.

The coil winding and aerosol generation device provided by the embodiments of the present invention provide an air groove on the outer surface of the bracket body to form an air layer between the coil and the bracket, and to conduct heat from the bracket to the coil. At the same time, the protrusions provide gaps between the individual coils, which is advantageous for dissipating heat generated by the coils' self-heating, and reduces coil loss. Compared to the prior art, energy consumption and module temperature can be significantly reduced and module losses can be reduced.

The above is only an example of the present invention, and does not limit the scope of the patent of the present application, and does not limit the scope of the patent of the present application. Anything that is applied to the technical field is included in the protection scope of the present application.

1 Bracket body 2 Air groove 3 Coil 4 Projection 5 Gap 6 Heating element 7 Heating element upper cover 8 Heating element lower cover 9 Shielding layer 10 Temperature measurement assembly

Claims (10)

A coil winding with an air interlayer,
comprising a bracket body (1) provided with an air groove (2) on its outer surface;
The coil (3) is wound around the outer surface of the bracket body (1) and at least partially covers the air groove (2),
An air intermediate layer is formed between the bracket main body (1) and the coil (3) by the air groove (2). This is a coil winding with an air intermediate layer. The coil winding with an air intermediate layer according to claim 1, characterized in that there is a plurality of said air grooves (2). Coil winding with an air interlayer according to claim 1, characterized in that the coil (3) completely covers the air groove (2). The axial width H1 of the air groove (2) is smaller than the axial width H2 of one of the coils (3),
The coil winding with an air intermediate layer according to claim 1, wherein the radial depth T of the air groove (2) is 0.1 mm or more. A protrusion (4) is further provided on the outer surface of the bracket body (1),
Coil winding with air interlayer according to claim 1, characterized in that the protrusion (4) is provided between at least two single coils of the coil (3). The coil winding with an air intermediate layer according to claim 5, characterized in that there are a plurality of said protrusions (4). Coil winding with an air intermediate layer according to claim 5, characterized in that the radial height of the protrusion (4) is smaller than the radial height of the coil. Coil with an air intermediate layer according to claim 1, characterized in that after the coil windings are wound, gaps (5) are provided between at least some of the coils (3). winding. An aerosol generation device, comprising:
A coil winding comprising an air intermediate layer according to any one of claims 1 to 8,
A heating element (6) is provided inside the bracket body (1),
An aerosol generation device characterized in that the heating element is heated by induction by the coil (3). The aerosol generation device according to claim 9, characterized in that a shielding layer (9) is provided on the outside of the coil (3).