Electromagnetic heating coil, heating assembly and electronic atomization device

Abstract

To provide an electronic atomization device in which the size in the radial direction is small and which is advantageous for downsizing the electronic atomization device.SOLUTION: An electromagnetic heating coil is configured by at least one bundle of a conductor wire bundle extending spirally along an axis line. The electromagnetic heating coil includes at least one turn of a sub-coil in an axis line extending direction. Each conductor wire bundle includes at least two lines of conductor wires. The sub-coil of each turn has a first size in the axis line extending direction and a second size in a first direction perpendicular to the axis line extending direction, the first size being larger than the second size.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to the field of atomization technology, and in particular to an electromagnetic heating coil, a heating assembly and an electronic atomization 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 are absorbed into the human body through the respiratory system, providing users with a new alternative means of absorption. For example, electronic atomizers that generate aerosols by baking or heating herbal or paste-like aerosol-generating substrates are applied in various fields to provide inhalable aerosols to users instead of traditional product forms and absorption means.

[0003] Electronic atomizers use a heating assembly to heat an aerosol-generating substrate to generate an aerosol that is inhaled by a user. Meanwhile, in the case of an electronic atomizer that employs an electromagnetic heating method, the heating assembly includes an electromagnetic heating coil and a heating element, and the electromagnetic heating coil is energized to generate a magnetic field, the heating element in the magnetic field generated by the electromagnetic heating coil is heated, the aerosol-generating substrate comes into contact with the heating element, and the heating element heats and atomizes the aerosol-generating substrate.

[0004] An electromagnetic heating coil is generally configured by surrounding a conducting wire in a spiral shape, but since a conventional spiral coil has a larger radial dimension, the radial dimension of the entire electronic atomization device becomes larger, which is disadvantageous for miniaturizing the electronic atomization device. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of this, there is a need to provide an electromagnetic heating coil, a heating assembly and an electronic atomization device that are advantageous for miniaturization of electronic atomization devices, in order to address the problem that the conventional electromagnetic heating coil is disadvantageous for miniaturization of electronic atomization devices. [Means for solving the problem]

[0006] An electromagnetic heating coil for use in an electronic atomization device, the electromagnetic heating coil being configured with at least one bundle of conductor wire extending in a spiral shape along an axis, the electromagnetic heating coil including at least one turn of a sub-coil in an extension direction of the axis, each of the bundles of conductor wire including at least two strands of conductor wire, the sub-coil of each turn having 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, the first dimension being greater than the second dimension.

[0007] In one embodiment, the cross-sectional shape of the sub-coil of each turn is rectangular or elliptical.

[0008] In one embodiment, the number of conductors included in each of the conductor bundles is 15 to 300, and the diameter of the conductors of each strand is 0.02 mm to 0.5 mm.

[0009] In one embodiment, the electromagnetic heating coil includes 1 to 3 bundles of the conductor wire, each bundle of the conductor wire includes 100 strands of the conductor wire, and the diameter of each strand of the conductor wire is 0.1 mm.

[0010] A heating assembly comprising a heating element and an electromagnetic heating coil as described in any one of the above, the electromagnetic heating coil being arranged outside the heating element, a accommodating cavity being provided within the heating element, and the heating element being provided with an opening communicating with the accommodating cavity in the extension direction of the axis.

[0011] In one embodiment, the heating assembly further comprises a mounting frame, the electromagnetic heating coil is arranged surrounding the exterior of the mounting frame, and the heating element is arranged within the mounting frame and faces at least a portion of the electromagnetic heating coil in the first direction.

[0012] In one embodiment, the heating assembly further comprises a magnetic shield member disposed outside the electromagnetic heating coil.

[0013] In one embodiment, the frequency of the operating current of the electromagnetic heating coil is 20KHZ-1MHZ.

[0014] In one embodiment, the frequency of the operating current of the electromagnetic heating coil is 100KHZ-600KHZ.

[0015] An electronic atomization device comprising a heating assembly according to any one of the preceding claims. Effect of the Invention

[0016] According to the above-mentioned electromagnetic coil, heating assembly, and electronic atomization device, the radial dimension of the sub-coil of each turn is smaller than the axial dimension thereof. Therefore, compared to the prior art where the cross section of the sub-coil of each turn of the electromagnetic heating coil is circular, by reducing the radial dimension of the electromagnetic heating coil, the radial dimension of the electronic atomization device is reduced, which is advantageous for miniaturizing the electronic atomization device. [Brief description of the drawings]

[0017] [Figure 1] 1 is an axonometric view of an electronic atomization device provided according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional view of the electronic atomization device shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the heating assembly of the electronic atomizer shown in FIG. 1. [Figure 4] 4 is a cross-sectional view of an electromagnetic heating coil of the heating assembly shown in FIG. 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] In order to more clearly understand the above objects, features and advantages of the present invention, the following detailed description of specific embodiments of the present invention will be given with reference to the drawings. In the following description, many specific details will be described in order to fully understand the present invention. However, the present invention can be embodied in many other forms different from the embodiments described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] In describing the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are based on the orientations or positional relationships shown in the drawings, and are intended only to facilitate and simplify the description of the present invention, and do not imply or suggest that the devices or elements referred to have a particular orientation or must be constructed and operated in a particular orientation, and should not be construed as limiting the present invention.

[0020] It should be noted that the terms "first" and "second" are for descriptive purposes only and are not to be understood as implying or suggesting the relative importance or number of the technical features described. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, unless otherwise expressly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0021] In the present invention, unless otherwise clearly defined and limited, the terms "attached", "coupled", "connected", "fixed" and the like should be understood in a broad sense, and may be, for example, a fixed connection, a detachable connection, or an integral connection. They may also be mechanically connected or electrically connected. Furthermore, unless otherwise clearly limited, they may be directly connected, indirectly connected via an intermediate medium, or may be an internal communication between two elements or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0022] In the present invention, unless otherwise clearly defined and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature may simply indicate that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is greater than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may simply indicate that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is smaller than that of the second feature.

[0023] For purposes of illustration, when an element is referred to as "fixed" or "mounted" on another element, it may be directly connected to the other element, or there may be intervening elements. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or there may be intervening elements. As used herein, the terms "vertical," "horizontal," "up," "down," "left," "right," and similar terms are for illustrative purposes only and do not represent the only embodiment.

[0024] As described in the Background Art, the conventional electromagnetic heating coil has a larger radial dimension, which makes the entire electronic atomizer larger in radial dimension, which is disadvantageous for miniaturization of the electronic atomizer.

[0025] The inventor has studied and found that the root cause of the above problem is that the heating assembly of the electronic atomizer using the electromagnetic heating method includes an electromagnetic heating coil and a heating element, and the electromagnetic heating coil is fitted on the outside of the heating element and extends in a spiral shape along the axis. On the other hand, when an electromagnetic heating coil formed by surrounding a conductor in a spiral shape is used, the cross-sectional shape of each turn of the sub-coil is circular, and thus the radial dimension of the electromagnetic heating coil becomes larger, which makes the radial dimension of the entire electronic atomizer larger, which is disadvantageous to the miniaturization of the electronic atomizer.

[0026] Based on the above problem, please refer to Fig. 1, which is an axonometric view of an electronic atomization device 100 provided by one embodiment of the present invention. The present invention provides an electronic atomization device 100 for heating and atomizing aerosol-generating substrates 300 in the form of liquid, solid or paste, such as flower, herb or synthetic.

[0027] 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 assembly 200, which includes a heating element 10 and an electromagnetic heating coil 20 fitted on the outside of the heating element 10. The electromagnetic heating coil 20 generates a magnetic field when energized, and the heating element 10 generates heat in the magnetic field generated by the electromagnetic heating coil 20 to heat the aerosol-generating substrate 300.

[0028] Specifically, a receiving cavity 11 is provided in the heating element 10, and an opening 12 communicating with the receiving cavity 11 is provided in the heating element 10, and the aerosol-generating substrate 300 can be received in the receiving cavity 11 through the opening 12. The electromagnetic heating coil 20 generates a magnetic field when energized, and the heating element 10 generates heat in the magnetic field. Since the aerosol-generating substrate 300 is received in the receiving cavity 11, the heating element 10 transfers heat to the aerosol-generating substrate 300, causing the temperature of the aerosol-generating substrate 300 to increase and atomize, forming an aerosol.

[0029] In one embodiment, the electromagnetic heating coil 20 is configured by at least one bundle of conductor wires extending in a spiral shape along the axis, and the opening 12 is provided at one end of the heating element 10 in the extending direction of the axis. Here, each conductor wire bundle includes at least two strands of conductor wire, i.e., each bundle of conductor wires includes at least two conductor wires, and each conductor wire bundle is configured by twisting at least two strands (two wires).

[0030] 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. The electromagnetic heating coil 20 includes at least one turn of the sub-coil 21 in the extension direction of the axis, i.e., the electromagnetic heating coil 20 includes at least one turn of the sub-coil 21 in the axial direction of the electromagnetic heating coil 20. Each turn of the sub-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, and the first dimension H is greater than the second dimension W.

[0031] In the above-mentioned electromagnetic heating coil 20, the radial dimension of the sub-coil 21 of each turn is smaller than its axial dimension, and therefore has the following advantages compared to the case where the cross section of the sub-coil 21 of each turn of the electromagnetic heating coil 20 of the prior art is circular (when the cross section of the electromagnetic heating coil 20 is circular, the radial dimension and axial dimension of the sub-coil 21 of each turn are equal). 1. By reducing the radial dimension of the electromagnetic heating coil 20, the radial dimension (horizontal space) of the electronic atomization device 100 is reduced, which is advantageous for making the electronic atomization device 100 smaller. 2. When the overall diameter of the electromagnetic heating coil 20 is the same, a larger circumference is more beneficial for the heat dissipation of the electromagnetic heating coil 20, which can reduce the temperature of the electromagnetic heating coil 20 and the loss of the electromagnetic heating coil 20, and improve the service life of the electromagnetic heating coil 20. 3. When the overall diameter of the electromagnetic heating coil 20 is the same, the projection area of ​​the orthogonal projection of the electromagnetic heating coil 20 onto the plane where the heating element 10 is located is larger, which can increase the heating area and improve the uniformity of the magnetic field.

[0032] At the same time, the electromagnetic heating coil 20 provided by this embodiment is configured with at least one bundle of conductor wires extending in a spiral shape along the axis, and each bundle of conductor wires includes at least two strands of conductor wire. Therefore, compared with the electromagnetic heating coil 20 of the prior art configured with a flat metal strip extending in a spiral shape, the AC resistance of the electromagnetic heating coil 20 in the high-frequency current can be reduced, and the energy loss of the electronic atomization device 100 itself can be reduced.

[0033] In one embodiment, the cross-sectional shape of each turn of the subcoil 21 is rectangular. Since the length of one set of sides of the rectangle is longer than the length of the other set of sides, when the cross-sectional shape of each turn of the subcoil 21 is rectangular, one set of long sides of the rectangle is arranged in the extension direction of the axis, and one set of short sides is arranged along a first direction (radial direction), thereby ensuring that the dimension of each turn of the subcoil 21 in the axial direction is larger than the dimension in the radial direction, i.e., ensuring that the first dimension H is larger than the second dimension W.

[0034] In another embodiment, the cross-sectional shape of each turn of the subcoil 21 is an ellipse. Since an ellipse has one major axis and one minor axis, when the cross-sectional shape of each turn of the subcoil 21 is an ellipse, the major axis is arranged in the extension direction of the axis line, and the minor axis is arranged in a first direction (radial direction), thereby ensuring that the dimension in the axial direction of each turn of the subcoil 21 is larger than the dimension in the radial direction, i.e., the first dimension H is ensured to be larger than the second dimension W.

[0035] As can be understood, and in other embodiments, the cross-sectional shape of the sub-coil 21 of each turn is not limited to the rectangular and elliptical shapes described above, but can be set as required.

[0036] In one embodiment, the electromagnetic heating coil 20 is configured by one bundle of conductor wires extending in a spiral shape along the axis, the number of conductor wires included in each conductor wire bundle is 15 to 300, and the diameter of each conductor wire is 0.02 mm to 0.5 mm. Specifically, each conductor wire bundle includes 100 conductor wires, and the diameter of each conductor wire is 0.1 mm. When manufacturing the electromagnetic heating coil 20, first, 100 conductor wires with a diameter of 0.1 mm are twisted together to form one bundle of conductor wires, then the conductor wire bundle is pressed into a desired shape using a dedicated facility, and finally, the conductor wire bundle is made to extend in a spiral shape along the axis to form the electromagnetic heating coil 20.

[0037] In another embodiment, the electromagnetic heating coil 20 is configured by a plurality of bundles of conductor wires extending in a spiral shape along the axis, the number of conductor wires included in each bundle of conductor wires is 15 to 300, and the diameter of each conductor wire is 0.02 mm to 0.5 mm. Specifically, the electromagnetic heating coil 20 is configured by three bundles of conductor wires extending in a spiral shape along the axis, each bundle of conductor wires includes 100 conductor wires, and the diameter of each conductor wire is 0.1 mm. When manufacturing the electromagnetic heating coil 20, first, 100 conductor wires having a diameter of 0.1 mm are twisted together to form one bundle of conductor wires, then three bundles of conductor wires are twisted together, and the twisted conductor wire bundle is pressed into a desired shape by a dedicated facility, and finally, the three bundles of conductor wire bundles pressed into a specific shape are made to extend in a spiral shape along the axis to form the electromagnetic heating coil 20.

[0038] Of course, in other embodiments, the number of conductor bundles included in the electromagnetic heating coil 20, the number of conductor strands included in each conductor bundle, and the diameter of each strand are not particularly limited. For example, in some embodiments, the electromagnetic heating coil 20 is configured with two conductor bundles extending in a spiral shape along the axis, each conductor bundle includes 150 conductor strands, and the diameter of each strand is 0.05 mm.

[0039] 2 and 3, in one embodiment, the heating assembly 200 further includes a mounting frame 30, the electromagnetic heating coil 20 is disposed surrounding the exterior of the mounting frame 30, and the heating element 10 is disposed within the mounting frame 30 and faces at least a portion of the electromagnetic heating coil 20 in a first direction. In this way, the heating element 10 and the electromagnetic heating coil 20 can be easily assembled and fixed.

[0040] The heating assembly 200 further includes a magnetic shield member 40 provided outside the electromagnetic heating coil 20. Meanwhile, the magnetic shield member 40 can fix the electromagnetic heating coil 20, and the magnetic shield member 40 can prevent electromagnetic waves from being emitted from the electromagnetic heating coil 20 to the outside.

[0041] 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 operates with a medium-low frequency current, and since the current density is higher at this frequency, the electromagnetic heating coil 20 can pass current through the conductor located at the middle position, and the conductor can be effectively utilized.

[0042] In addition, the frequency of the working current of the electromagnetic heating coil 20 is 100KHZ-600KHZ, which ensures that the electromagnetic heating coil 20 operates with a current of a suitable frequency, ensures that current flows through all the conductors included in the electromagnetic heating coil 20, and further improves the utilization rate of the conductors.

[0043] Another embodiment of the present invention further provides a heating assembly 200 included in the electronic atomizing device 100 described above.

[0044] Yet another embodiment of the present invention further provides an electromagnetic heating coil 20 included in the heating assembly 200. The electromagnetic heating coil 20 is configured with at least one bundle of conductor wires extending helically along an axis, and each bundle of conductor wires includes at least two strands of conductor wire. The electromagnetic heating coil 20 includes at least one turn of sub-coil 21 in the extension direction of the axis. Each turn of sub-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, and the first dimension H is greater than the second dimension W.

[0045] According to the above-mentioned electromagnetic heating coil 20, the radial dimension of the sub-coil 21 of each turn is smaller than the axial dimension. Therefore, compared to the case where the cross section of the sub-coil 21 of each turn of the electromagnetic heating coil 20 of the prior art is circular, by making the radial dimension of the electromagnetic heating coil 20 smaller, the radial dimension (horizontal space) of the electronic atomization device 100 is smaller, which is advantageous for miniaturizing the electronic atomization device 100.

[0046] The technical features of the embodiments described above can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the embodiments described above have been described; however, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope described in this specification.

[0047] The above examples merely show some embodiments of the present application, and although the description is specific and detailed, it should not be understood as limiting the scope of the present invention. It should be noted that those skilled in the art can make some modifications and improvements that fall within the scope of the present application without departing from the idea of ​​the present application. Therefore, the scope of the patent of the present application shall be subject to the scope of the attached claims. [Explanation of symbols]

[0048] 100 Electronic atomization device 200 Heating Assembly 300 Aerosol-generating Substrates 10 Heating element 11. Storage Cavity 12 Opening 20 Electromagnetic heating coil 21 Subcoil H First dimension W second dimension; 30 Mounting frame 40 Magnetic shielding material

Claims

1. An electromagnetic heating coil for use in an electronic atomizer, The electromagnetic heating coil is configured by at least one bundle of conductor wire extending in a spiral shape along an axis, the electromagnetic heating coil includes a sub-coil of at least one turn in an extension direction of the axis, and each of the conductor wire bundles includes at least two conductor wires, The sub-coil of each turn has a first dimension in an extension direction of the axis and a second dimension in a first direction perpendicular to the extension direction of the axis, the first dimension being greater than the second dimension; The electromagnetic heating coil includes two to three bundles of the conductor wire, and each bundle of the conductor wire includes 100 to 300 strands of the conductor wire. Electromagnetic heating coil.

2. The cross-sectional shape of the sub-coil of each turn is rectangular or elliptical.

2. The electromagnetic heating coil according to claim 1 .

3. The diameter of the conductor of each stripe is between 0.02 mm and 0.5 mm.

2. The electromagnetic heating coil according to claim 1 .

4. The diameter of the wire in each strip is 0.1 mm.

2. The electromagnetic heating coil according to claim 1 .

5. A heating element and the electromagnetic heating coil according to claim 1, the electromagnetic heating coil being provided outside the heating element, A housing cavity is provided within the heating element, and the heating element is provided with an opening communicating with the housing cavity in the extension direction of the axis. A heating assembly comprising:

6. The heating assembly further includes a mounting frame, the electromagnetic heating coil is disposed surrounding an exterior of the mounting frame, and the heating element is disposed within the mounting frame and faces at least a portion of the electromagnetic heating coil in the first direction.

6. The heating assembly of claim 5.

7. The heating assembly further includes a magnetic shield member disposed outside the electromagnetic heating coil.

6. The heating assembly of claim 5.

8. The frequency of the operating current of the electromagnetic heating coil is 20KHz-1MHZ.

6. The heating assembly of claim 5.

9. The frequency of the operating current of the electromagnetic heating coil is 100KHZ-600KHZ.

9. The heating assembly of claim 8.

10. Equipped with a heating assembly according to any one of claims 5 to 9 An electronic atomization device characterized by:

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