WO2023231626A1

WO2023231626A1 - Electromagnetic heating coil, heating assembly, and electronic atomization device

Info

Publication number: WO2023231626A1
Application number: PCT/CN2023/089210
Authority: WO
Inventors: 范吉昌; 杨保民; 罗永杰
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2022-06-02
Filing date: 2023-04-19
Publication date: 2023-12-07
Also published as: KR20230167702A; JP2023178216A; EP4287768A1; CN217695285U

Abstract

An electromagnetic heating coil (20), a heating assembly (200), and an electronic atomization device (100). The electromagnetic heating coil (20) is formed by spirally extending at least one wire harness along an axis, and each wire harness comprises at least two strands of wires; in the extension direction of the axis, the electromagnetic heating coil comprises at least one turn of sub-coil (21), and the size of each turn of sub-coil (21) in a radial direction is smaller than the size of same in an axial direction. Compared with the situation where the cross section of each turn of sub-coil of the current electromagnetic heating coil is circular, the size of the electromagnetic heating coil (20) in the radial direction is reduced, so that the size of the electronic atomization device (100) in the radial direction is reduced, thereby facilitating the miniaturization of the electronic atomization device (100).

Description

Electromagnetic heating coils, heating components and electronic atomization devices

cross reference

This application cites Chinese patent application No. 202221366482.9 titled "Electromagnetic Heating Coil, Heating Component and Electronic Atomization Device" submitted on June 2, 2022, which is fully incorporated into this application by reference.

Technical field

The present application relates to the field of atomization technology, and in particular to an electromagnetic heating coil, heating assembly and electronic atomization device.

Background technique

Aerosol is a colloidal dispersion system formed by small solid or liquid particles dispersed and suspended in a gas medium. Aerosol can be absorbed by the human body through the respiratory system, providing users with a new alternative absorption method. For example, electronic atomization devices that can bake and heat herbal or ointment aerosol-generating substrates to generate aerosols are used in different fields to deliver inhalable aerosols to users, replacing conventional product forms and absorption Way.

The electronic atomization device uses a heating component to heat the aerosol-generating substrate to generate aerosol for the user to inhale. For electronic atomization devices that use electromagnetic heating, the heating components include electromagnetic heating coils and heating elements. The electromagnetic heating coil is energized to generate a magnetic field. The heating element is located in the magnetic field generated by the electromagnetic heating coil and heats up. The aerosol generates a matrix and a heating element. When in contact, the heating element heats and atomizes the aerosol-generating substrate.

Electromagnetic heating coils are usually formed by spirally surrounding wires. However, the traditional spiral coil has a larger radial size, which makes the entire electronic atomization device larger in the radial direction, which is not conducive to the miniaturization of the electronic atomization device.

Contents of the invention

Based on this, it is necessary to provide an electromagnetic heating coil, a heating assembly and an electronic atomization device that are conducive to the miniaturization of the electronic atomization device in order to solve the problem that the use of traditional electromagnetic heating coils is not conducive to the miniaturization of the electronic atomization device.

In a first aspect, the present application provides an electromagnetic heating coil for use in an electronic atomization device. The electromagnetic heating coil is formed by at least one wire bundle spirally extending along an axis. In the extension direction of the axis, the electromagnetic heating coil includes at least A turn coil; each wire bundle includes at least two strands of wires;

Each turn coil has a first dimension in the extension direction of the axis and a second dimension in a first direction perpendicular to the extension direction of the axis, and the first dimension is larger than the second dimension.

In some embodiments, the cross-sectional shape of each turn coil is rectangular or elliptical.

In some embodiments, the number of wires included in each wire bundle is 15-300 strands, and the diameter of each wire is 0.02mm-0.5mm.

In some embodiments, the electromagnetic heating coil includes 1-3 wire bundles, each wire bundle includes 100 strands of wire, each The diameter of the stranded wire is 0.1mm.

In a second aspect, the present application provides a heating component, including a heating element and an electromagnetic heating coil as described above. The electromagnetic heating coil is arranged outside the heating body;

The heating body is provided with an accommodating cavity, and the heating body is provided with an opening communicating with the accommodating cavity in the extending direction of the axis.

In some embodiments, the heating assembly further includes a mounting frame, the electromagnetic heating coil is arranged around the outside of the mounting frame, and the heating element is located in the mounting frame and is at least partially opposite to the electromagnetic heating coil in the first direction.

In some embodiments, the heating component further includes a magnetic shield, and the magnetic shield is disposed outside the electromagnetic heating coil.

In some embodiments, the frequency of the operating current of the electromagnetic heating coil is 20KHZ-1MHZ.

In some embodiments, the frequency of the operating current of the electromagnetic heating coil is 100KHZ-600KHZ.

An electronic atomization device includes a heating component as described above.

In the above-mentioned electromagnetic coil, heating assembly and electronic atomization device, the size of each coil in the radial direction is smaller than the size in the axial direction. Compared with the prior art situation where the cross-section of each sub-coil of the electromagnetic heating coil is circular. , reducing the size of the electromagnetic heating coil in the radial direction, thereby reducing the size of the electronic atomization device in the radial direction, which is beneficial to the miniaturization of the electronic atomization device.

The above description is only an overview of the technical solutions of the present application. In order to have a clearer understanding of the technical means of the present application, they can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable. , the specific implementation methods of the present application are specifically listed below.

Description of the drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for the purpose of illustrating the embodiments and are not to be considered as limitations of the application. Also, the same parts are represented by the same reference numerals throughout the drawings. In the attached picture:

Figure 1 is a isometric view of an electronic atomization device provided by an embodiment of the present application;

Figure 2 is a cross-sectional view of the electronic atomization device shown in Figure 1;

Figure 3 is a cross-sectional view of the heating assembly of the electronic atomization device shown in Figure 1;

FIG. 4 is a cross-sectional view of the electromagnetic heating coil of the heating assembly shown in FIG. 3 .

100. Electronic atomization device;

200. Heating component; 300. Aerosol generating matrix;

10. Heating element; 11. Accommodating cavity; 12. Opening;

20. Electromagnetic heating coil; 21. Sub-coil; H, first size; W, second size;

30. Installation rack;

40. Magnetic shielding parts.

Detailed ways

The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solution of the present application more clearly, and are therefore only used as examples and cannot be used to limit the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field belonging to this application; the terms used herein are for the purpose of describing specific embodiments only and are not intended to be used in Limitation of this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

In the description of the embodiments of this application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity or specificity of the indicated technical features. Sequence or priority relationship. In the description of the embodiments of this application, "plurality" means two or more, unless otherwise explicitly and specifically limited.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of this application, the term "and/or" is only an association relationship describing associated objects, indicating that there can be three relationships, such as A and/or B, which can mean: A exists alone, and A exists simultaneously and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to It is more than two pieces (including two pieces).

In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right" and "vertical" The orientation or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the embodiments of the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the implementation of the present application. Example limitations.

In the description of the embodiments of this application, unless otherwise clearly stated and limited, technical terms such as "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. It can be disassembled and connected, or integrated; it can also 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 an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

As mentioned in the background art, the traditional electromagnetic heating coil has a large size in the radial direction, which results in a large size of the entire electronic atomization device in the radial direction, which is not conducive to the miniaturization of the electronic atomization device.

The inventor's research found that the root cause of the above problems is that the electronic atomization device using electromagnetic heating The heating component includes an electromagnetic heating coil and a heating body. The electromagnetic heating coil is sleeved on the heating body and extends spirally along an axis. For electromagnetic heating coils formed by spirally surrounding wires, the cross-sectional shape of each coil is circular. This will result in a larger radial size of the electromagnetic heating coil, resulting in a larger radial size of the entire electronic atomization device. Large, it is not conducive to the miniaturization of electronic atomization devices.

Based on the above problems, refer to FIG. 1 , which is an isometric view of the electronic atomization device 100 provided by an embodiment of the present application. The present application provides an electronic atomization device 100. The electronic atomization device 100 can be used to heat and atomize a mosaic, herbal, or synthetic liquid, solid, or pasty aerosol-generating matrix 300.

Referring to FIGS. 2 and 3 , FIG. 2 is a cross-sectional view of the electronic atomization device 100 shown in FIG. 1 , and FIG. 3 is a cross-sectional view of the heating assembly 200 of the electronic atomization device 100 shown in FIG. 1 . The electronic atomization device 100 includes a heating component 200. The heating component 200 includes a heating element 10 and an electromagnetic heating coil 20 that is set outside the heating element 10. The electromagnetic heating coil 20 is energized to generate a magnetic field, and the heating element 10 is in the magnetic field generated by the electromagnetic heating coil 20. The aerosol generating substrate 300 generates heat in the magnetic field.

Specifically, the heating element 10 is provided with an accommodating cavity 11 , and the heating element 10 is provided with an opening 12 communicating with the accommodating cavity 11 , and the aerosol generating matrix 300 can be accommodated in the accommodating cavity 11 through the opening 12 . The electromagnetic heating coil 20 is energized to generate a magnetic field, and the heating element 10 generates heat when it is in the magnetic field. Since the aerosol generating matrix 300 is accommodated in the containing cavity 11, at this time, the heating element 10 transfers heat to the aerosol generating matrix 300, and the aerosol is generated. The temperature of the substrate 300 increases and atomizes to form an aerosol.

In one embodiment, the electromagnetic heating coil 20 is formed by at least one wire bundle spirally extending along an axis, and the opening 12 is provided at one end of the heating element 10 in the extending direction of the axis. Wherein, each wire bundle includes at least two strands of wires, that is, each wire bundle includes at least two wires, and each wire bundle is formed by twisting at least two strands (two wires).

Referring to FIG. 4 , FIG. 4 is a cross-sectional view of the electromagnetic heating coil 20 of the heating assembly 200 shown in FIG. 3 . In the extending direction of the axis, the electromagnetic heating coil 20 includes at least one turn coil 21 , that is, in the axial direction of the electromagnetic heating coil 20 , the electromagnetic heating coil 20 includes at least one turn coil 21 . Each turn coil 21 has a first dimension H in the extension direction of the axis, and a second dimension W in a first direction (radial direction) perpendicular to the extension direction of the axis. The first dimension H is larger than the second dimension W.

In the above electromagnetic heating coil 20, the size of each coil 21 in the radial direction is smaller than the size in the axial direction. Compared with the prior art electromagnetic heating coil 20, the cross section of each coil 21 is circular (when the electromagnetic heating coil When the cross section of 20 is circular and the radial size and axial size of each turn coil 21 are equal), it has the following advantages:

1. The size of the electromagnetic heating coil 20 in the radial direction is reduced, thereby reducing the size of the electronic atomization device 100 in the radial direction (lateral space), which is beneficial to the miniaturization of the electronic atomization device 100.

2. When the diameter of the entire electromagnetic heating coil 20 is the same, the outer circumference is larger, which is more conducive to the heat dissipation of the electromagnetic heating coil 20, reduces the temperature of the electromagnetic heating coil 20 and the loss of the electromagnetic heating coil 20, and improves the efficiency of the electromagnetic heating coil 20. service life.

3. When the diameter of the entire electromagnetic heating coil 20 is the same, the electromagnetic heating coil 20 is positioned at the same level as the heating element 10. The orthographic projection of the surface has a larger projection area, which can increase the heating area and improve the uniformity of the magnetic field.

At the same time, the electromagnetic heating coil 20 provided in this embodiment is formed by at least one wire bundle spirally extending along the above-mentioned axis, and each wire bundle includes at least two strands of wires. Compared with the electromagnetic heating coil 20 in the prior art, which is flat-shaped The spirally extended metal strip can reduce the AC resistance of the electromagnetic heating coil 20 under high-frequency current and reduce the energy loss of the electronic atomization device 100 itself.

In one embodiment, the cross-sectional shape of each turn coil 21 is rectangular. Since the length of one set of sides of a rectangle is greater than the length of another set of sides, when the cross-sectional shape of each turn coil 21 is set to be a rectangle, a set of long sides of the rectangle is set along the extension direction of the axis, and a set of short sides are set along the first direction ( (radial direction) arrangement can ensure that the size of each turn coil 21 in the axial direction is larger than the size in the radial direction, that is, ensuring that the first size H is larger than the second size W.

In another embodiment, the cross-sectional shape of each turn coil 21 is elliptical. Since the ellipse has a long axis and a short axis, when the cross-sectional shape of each turn coil 21 is set to be elliptical, the long axis is set along the extension direction of the axis, and the short axis is set along the first direction (radial direction), so that It is ensured that the size of each turn coil 21 in the axial direction is greater than the size in the radial direction, that is, it is ensured that the first size H is greater than the second size W.

It can be understood that in other embodiments, the cross-sectional shape of each turn coil 21 is not limited to the above-mentioned rectangular and elliptical shapes, and can be set as needed.

In one embodiment, the electromagnetic heating coil 20 is formed by a wire bundle spirally extending along the above-mentioned axis. Each wire bundle includes 15-300 wires, and the diameter of each wire is 0.02mm-0.5mm. Specifically, each wire bundle includes 100 wires, and the diameter of each wire is 0.1 mm. When preparing the electromagnetic heating coil 20, first 100 wires with a diameter of 0.1mm are twisted together to form a wire bundle, and then the wire bundle is pressed into the required shape through special equipment, and finally the wire bundle is spiraled along the axis. The electromagnetic heating coil 20 is extended.

In another embodiment, the electromagnetic heating coil 20 is composed of multiple wire bundles extending spirally along the above-mentioned axis. Each wire bundle includes 15-300 wires, and the diameter of each wire is 0.02mm-0.5mm. Specifically, the electromagnetic heating coil 20 is formed by three wire bundles extending spirally along the above-mentioned axis. Each wire bundle includes 100 wires, and the diameter of each wire is 0.1 mm. When preparing the electromagnetic heating coil 20, first 100 strands of wires with a diameter of 0.1 mm are twisted together to form a wire bundle, then three bundles of wires are twisted together, and the twisted wires are twisted together using special equipment. The wire bundle is pressed into a required shape, and finally the three wire bundles pressed into a specific shape are spirally extended along the axis to form the electromagnetic heating coil 20.

Of course, in other embodiments, there are no specific limitations on the number of wire bundles included in the electromagnetic heating coil 20 , the number of wire strands included in each wire bundle, and the diameter of each wire strand. For example, in some embodiments, the electromagnetic heating coil 20 is formed by two wire bundles extending spirally along the above-mentioned axis. Each wire bundle includes 150 wires, and the diameter of each wire is 0.05 mm.

In one embodiment, continuing to refer to FIGS. 2 and 3 , the heating component 200 further includes a mounting frame 30 , the electromagnetic heating coil 20 is arranged around the mounting frame 30 , and the heating element 10 is mounted in the mounting frame 30 and is in contact with the mounting frame 30 in the first direction. The electromagnetic heating coils 20 are at least partially opposed. In this way, the assembly and fixation of the heating element 10 and the electromagnetic heating coil 20 are facilitated.

The heating assembly 200 also includes a magnetic shield 40 , which is disposed outside the electromagnetic heating coil 20 . On the one hand, the magnetic shield 40 can fix the electromagnetic heating coil 20, and the magnetic shield 40 can prevent the electromagnetic heating coil 20 from radiating electromagnetism to the outside world.

In one embodiment, the frequency of the operating current of the electromagnetic heating coil 20 is 20KHZ-1MHZ. In this way, the electromagnetic heating coil 20 is operated under a medium-low frequency current, and the current density is relatively high at this frequency. This allows current to flow through the conductor located in the middle of the electromagnetic heating coil 20 and effectively utilizes the conductor.

Further, the frequency of the working current of the electromagnetic heating coil 20 is 100KHZ-600KHZ. In this way, it is ensured that the electromagnetic heating coil 20 operates under a current of appropriate frequency to ensure that current flows through all the wires included in the electromagnetic heating coil 20, further improving the utilization rate of the wires.

Another embodiment of the present application also provides a heating component 200 included in the above-mentioned electronic atomization device 100.

Another embodiment of the present application also provides an electromagnetic heating coil 20 included in the above-mentioned heating assembly 200. The electromagnetic heating coil 20 is formed by at least one wire bundle spirally extending along an axis, and each wire bundle includes at least two strands of wires. In the extending direction of the axis, the electromagnetic heating coil 20 includes at least one turn coil 21 . Each turn coil 21 has a first dimension H in the extension direction of the axis, and a second dimension W in a first direction perpendicular to the extension direction of the axis. The first dimension H is larger than the second dimension W.

In the above-mentioned electromagnetic heating coil 20, the size of each sub-coil 21 in the radial direction is smaller than the size in the axial direction. Compared with the prior art situation where the cross-section of each sub-coil 21 of the electromagnetic heating coil 20 is circular, the size is smaller. The size of the electromagnetic heating coil 20 in the radial direction is reduced, thereby reducing the size of the electronic atomization device 100 in the radial direction (lateral space), which is beneficial to the miniaturization of the electronic atomization device 100.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application. The scope shall be covered by the claims and description of this application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

An electromagnetic heating coil for an electronic atomization device. The electromagnetic heating coil is formed by at least one wire bundle spirally extending along an axis. In the extension direction of the axis, the electromagnetic heating coil includes at least one turn. Sub-coils; each bundle of said wire bundles includes at least two strands of wires;

Each turn of the sub-coil has a first dimension in the extension direction of the axis and a second dimension in a first direction perpendicular to the extension direction of the axis, and the first dimension is larger than the second dimension.
The electromagnetic heating coil according to claim 1, wherein the cross-sectional shape of each turn of the sub-coil is a rectangle or an ellipse.
The electromagnetic heating coil according to claim 1 or 2, wherein the number of wires included in each wire bundle is 15-300 strands, and the diameter of each wire is 0.02mm-0.5mm.
The electromagnetic heating coil according to any one of claims 1-3, wherein the electromagnetic heating coil includes 1-3 bundles of the wires, each bundle of the wires includes 100 strands of the wires, and each strand of the wires The diameter of the wire is 0.1mm.
A heating component, including a heating element and an electromagnetic heating coil according to any one of claims 1 to 4, the electromagnetic heating coil being arranged outside the heating body;

The heating body is provided with an accommodating cavity, and the heating body is provided with an opening communicating with the accommodating cavity in the extending direction of the axis.
The heating assembly according to claim 5, wherein the heating assembly further includes a mounting frame, the electromagnetic heating coil is arranged around the outside of the mounting frame, and the heating element is arranged in the mounting frame and on the outside of the mounting frame. The first direction is at least partially opposite to the electromagnetic heating coil.
The heating component according to claim 5 or 6, wherein the heating component further includes a magnetic shield, and the magnetic shield is provided outside the electromagnetic heating coil.
The heating component according to any one of claims 5-7, wherein the frequency of the operating current of the electromagnetic heating coil is 20KHZ-1MHZ.
The heating assembly according to claim 8, wherein the frequency of the operating current of the electromagnetic heating coil is 100KHZ-600KHZ.
An electronic atomization device includes the heating component according to any one of claims 5-9.