JP2023178217A - Electromagnetic heating coil and heating assembly - Google Patents

Abstract

SOLUTION: An electromagnetic heating coil 20 includes a sub-coil 21 of a plurality of turns in an axial direction. The electromagnetic heating coil 20 includes a first spiral segment 22 and a second spiral segment 23 sequentially connected from one end to the other end in the axial direction. The pitch of the sub-coil 21 between arbitrary two adjacent turns of the first spiral segment 22 is smaller than the pitch of the sub-coil 21 between arbitrary two adjacent turns of the second spiral segment 23.EFFECT: When compared to a conventional electromagnetic heating coil whose pitch is uniform, an electromagnetic heating coil, a heating assembly, and an electronic atomization device of the present invention can improve user experience since a heating element in a magnetic field generates heat when a magnetic field is generated by electrification; the temperature of the heating element facing a first spiral segment increases so that the temperature at one end near an inhalation end of a user of a core of an aerosol generation substrate rises faster; and the atomization in the electronic atomization device is accelerated.SELECTED DRAWING: Figure 6

Description

The present invention relates to the field of atomization technology, and more particularly to electromagnetic heating coils and heating assemblies.

Aerosols are colloidal dispersions formed when small particles of solid or liquid are dispersed and suspended in a gaseous medium.Aerosols are absorbed into the human body through the respiratory system, thus providing users with a new alternative means of absorption. . For example, electronic atomization devices, which produce aerosols by baking and heating herbal or pasty aerosol-generating substrates, have been applied in various fields and can replace traditional product forms and absorption means that can be inhaled by the user. Deliver an aerosol.

Electronic nebulizers utilize a heating assembly to heat an aerosol-generating substrate to generate an aerosol that is inhaled by a user. On the other hand, in the case of an electronic atomizer that adopts an electromagnetic heating method, the heating assembly includes an electromagnetic heating coil and a heating element, the electromagnetic heating coil is energized to generate a magnetic field, and the electromagnetic heating coil generates a magnetic field. The temperature of the heating element increases, the aerosol-generating substrate comes into contact with the heating element, and the heating element heats the aerosol-generating substrate to atomize it.

However, the conventional electronic atomization device that uses the electromagnetic heating method has the problem of slow atomization, giving the user an unpleasant experience.

In view of this, there is a need to provide an electromagnetic heating coil and a heating assembly that can increase the atomization speed to solve the problem of slow atomization when using conventional electronic atomization devices.

An electromagnetic heating coil used in an electronic atomization device, wherein the electromagnetic heating coil has a sub-coil having a plurality of turns in the axial direction, and the electromagnetic heating coil is connected in order from one end to the other end in the axial direction. a first helical segment and a second helical segment, the pitch between the subcoils of any two adjacent turns of the first helical segment being equal to the pitch of the second helical segment; The pitch is smaller than the pitch between any two adjacent turns of the subcoils.

In one embodiment, the pitch between the subcoils in any two adjacent turns of the first helical segment is equal, and the pitch between the subcoils in any two adjacent turns of the second helical segment is equal. have the same pitch.

In one embodiment, the pitch between the subcoils of any two adjacent turns of the first helical segment is between 0 mm and 4 mm, and the pitch of any two adjacent turns of the second helical segment is between 0 mm and 4 mm. The pitch between the subcoils is 0.5 mm to 8 mm.

In one embodiment, the number of turns of the subcoil included in the first helical segment is greater than or equal to the number of turns of the subcoil included in the second helical segment.

In one embodiment, the electromagnetic heating coil further includes a third helical segment, the second helical segment connected to the first helical segment and the third helical segment, and the The pitch between any two adjacent turns of the subcoils of the third helical segment is less than the pitch between any two adjacent turns of the subcoils of the second helical segment.

In one embodiment, the pitch between the subcoils of any two adjacent turns of the third helical segment is equal.

In one embodiment, the pitch between the subcoils in any two adjacent turns of the first helical segment is equal to the pitch between the subcoils in any two adjacent turns of the third helical segment. below the pitch.

In one embodiment, the number of turns of the subcoil included in the first helical segment is greater than or equal to the number of turns of the subcoil included in the third helical segment.

In one embodiment, the pitch between the subcoils of any two adjacent turns of the third helical segment is between 0 mm and 4 mm.

In one embodiment, the electromagnetic heating coil is configured by at least one conducting wire bundle extending spirally along the axial direction, each conducting wire bundle including at least two conducting wires, and the electromagnetic heating coil The subcoil of each turn included in the subcoil has a first dimension in the axial direction and a second dimension in the radial direction, and the first dimension is larger than the second dimension.

A heating assembly, comprising: a heating element having an accommodation cavity therein and an opening communicating with the accommodation cavity at an upper end in the axial direction; and any one of the above fitted onto the heating element. and an electromagnetic heating coil according to , wherein in the axial direction, both ends of the heating element are located on both sides of an intermediate position of the electromagnetic heating coil, and in the axial direction, the first helical segment is , located at the top of the second helical segment.

In one embodiment, the electromagnetic heating coil further includes a third helical segment, the second helical segment connected to the first helical segment and the third helical segment, and the The pitch between any two adjacent turns of the subcoils of the third helical segment is less than the pitch between any two adjacent turns of the subcoils of the second helical segment.

In one embodiment, the heating assembly further comprises a mounting frame, the electromagnetic heating coil is fitted onto the mounting frame, the heating element is disposed within the mounting frame, and the mounting frame is mounted on the shaft. The electromagnetic heating coil has a positioning groove extending spirally along the direction, and the electromagnetic heating coil is fitted into the positioning groove.

In one embodiment, the heating assembly further includes a magnetic shielding member fitted over the electromagnetic heating coil.

Compared to the electromagnetic heating coil with uniform pitch in the prior art, when the electromagnetic heating coil and heating assembly are energized to generate a magnetic field, the heating element in the magnetic field generates heat, and the first helical segment has a uniform pitch. As the temperature of the heating element increases, the temperature of one end of the core of the aerosol-generating substrate near the user's inhalation end increases faster, thereby allowing the electronic atomizer to atomize faster and improve the user experience.

1 is an axonometric view of an electronic atomization device provided by an embodiment of the present invention; FIG. 2 is a sectional view of the electronic atomization device shown in FIG. 1. FIG. FIG. 2 is a cross-sectional view of the heat generating assembly of the electronic atomization device shown in FIG. 1; FIG. 2 is a structural diagram of the local structure of the electronic atomization device shown in FIG. 1; FIG. 2 is an axonometric view of an electromagnetic heating coil of the electronic atomization device shown in FIG. 1. FIG. 6 is a sectional view of the electromagnetic heating coil shown in FIG. 5. FIG. FIG. 3 is a cross-sectional view of an electromagnetic heating coil of an electronic atomization device provided by another embodiment of the present invention. FIG. 4 is a comparison diagram of a temperature field of a heating element of an electronic atomization device provided by another embodiment of the present invention and a temperature field of a prior art electronic atomization device;

In order to more clearly understand the above objects, features, and advantages of the present invention, specific embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the invention. However, the present invention may be embodied in many other forms than those described herein, and similar modifications may be made by those skilled in the art without departing from the spirit of the invention. can. Therefore, the invention is not limited to the specific examples disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "vertical direction", "lateral direction", "length", "width", "thickness", "upper", "lower", "front" ", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", " The directions or positional relationships indicated by "axial direction", "radial direction", "circumferential direction", etc. are based on the directions or positional relationships shown in the drawings, and are intended to facilitate and simplify the explanation of the present invention. are not intended to imply or imply that the devices or elements referred to must have a particular orientation, be constructed or operate in a particular orientation, and are not to be construed as limiting the invention. Shouldn't.

It should be noted that the terms "first" and "second" are for descriptive purposes only and are not to be understood as implying or implying relative importance or number of technical features described. Therefore, the features defined by "first" and "second" can include at least one of the features explicitly or implicitly. In the description of the present invention, unless expressly and specifically limited, "plurality" means at least two, such as two, three, etc.

In the present invention, terms such as "attachment", "coupling", "connection", "fixation", etc. should be understood in a broad sense, and may include, for example, a fixed connection, unless specifically defined and limited. However, it may be a detachable connection or may be integrated. Further, the connection may be mechanical or electrical. Furthermore, unless specifically limited, the connection may be direct, or may be indirectly connected through an intermediate medium, or may be an internal communication between two elements or an interaction relationship between the two elements. Good too. Those skilled in the art can understand the specific meanings of the above terms in the present invention depending on the specific situation.

In the present invention, unless specifically specified and limited, the first feature being "above" or "below" the second feature does not mean that the first and second features may be in direct contact. However, the first and second features may come into contact indirectly via an intermediate medium. Furthermore, the fact that the first feature is "above", "above", and "on the top surface" of the second feature means that the first feature is directly above or diagonally above the second feature, or may simply indicate that the horizontal height of the feature is greater than the second feature. The fact that the first feature is "below", "beneath", and "on the underside" of the second feature means that the first feature is directly below or diagonally below the second feature, or the first feature It may simply indicate that the horizontal height is less than the second feature.

It should be noted that when an element is referred to as being "fixed" or "provided to" another element, it may be present directly on the other element, or there may be intervening elements present. When an element is considered "connected" to another element, it may be directly connected to the other element, or there may be intervening elements. The terms "vertical", "horizontal", "above", "below", "left", "right" and similar expressions used herein are for descriptive purposes only and indicate only embodiments. isn't it.

As described in the background art, the electronic atomization device employing the conventional electromagnetic heating method has the problem of slow atomization, giving users an unpleasant usage experience.

The inventor investigated and found that the fundamental cause of the above problem is that the electromagnetic heating coil used in conventional electronic atomization devices has the same pitch at each location in the axial direction. It has been found that the temperature of the portion directly facing the intermediate position in the axial direction is higher. On the other hand, the aerosol-generating substrate is heated and atomized by the heating element, and since the high temperature position of the heating element is relatively in the center, the upper part of the core of the aerosol-generating substrate is preferentially heated and atomized. There is no merit, and there are the above-mentioned problems that the initial atomization is slow and the amount of atomization is small.

Based on the above problem, and referring to FIG. 1, the present invention provides an electronic atomization device 100 for heating and atomizing a liquid, solid or pasty aerosol-generating substrate 300 of flower bud type, herbaceous type, synthetic type. I will provide a.

Referring to FIG. 2, the electronic atomization device 100 includes a heating assembly 200, the heating assembly 200 includes a heating element 10 and an electromagnetic heating coil 20 fitted onto the heating element 10, and the electromagnetic heating coil 20 includes: Extending spirally in the axial direction, the heating element 10 faces at least a portion of the electromagnetic heating coil 20 in the radial direction. The electromagnetic heating coil 20 is energized to generate a magnetic field, and the heating element 10 generates heat in the magnetic field generated by the electromagnetic heating coil 20 to heat the aerosol generation substrate 300. Specifically, the electromagnetic heating coil 20 has an intermediate position in the axial direction, and the heating element 10 extends to both sides of the intermediate position in the axial direction, that is, on both sides of the intermediate position of the electromagnetic heating coil 20. In each case, a heating element 10 is provided correspondingly.

Referring to FIGS. 2 and 3, a housing cavity 11 is provided within the heating element 10, and an opening 12 communicating with the housing cavity 11 is provided at one end of the heating element 10 in the axial direction. The aerosol-generating substrate 300 includes a rod 301 and a core 302 provided within the rod 301, and the aerosol-generating substrate 300 can be accommodated in the receiving 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 in the magnetic field. Since the core 302 of the aerosol-generating substrate 300 is accommodated in the accommodation cavity 11, in this case, the heating element 10 transfers heat to the core 302 of the aerosol-generating substrate 300, and the temperature of the core 302 of the aerosol-generating substrate 300 increases. is atomized to form an aerosol.

In one embodiment, both ends of the heating element 10 protrude from the electromagnetic heating coil 20 in the axial direction so that the heating element 10 is provided corresponding to each location in the axial direction of the electromagnetic heating coil 20. reduces energy waste. Of course, in other embodiments, the length of the heating element 10 in the axial direction may be made smaller than the length of the electromagnetic heating coil 20 in the axial direction, so that at least one end surface of the heating element 10 in the axial direction is electromagnetically heated Located within the coil 20.

The dimension in the axial direction of the core 302 of the aerosol generating substrate 300 is smaller than the dimension of the accommodation cavity 11, so that the entire core 302 is accommodated in the accommodation cavity 11, and each part of the core 302 is connected to the heating element 10. It is ensured that the material contacts and is heated by the heating element 10 and atomized.

Specifically, when the aerosol generating substrate 300 is accommodated in the accommodation cavity 11 , the end surface of the core 302 near the opening 12 is located within the electromagnetic heating coil 20 . It should be understood that in other embodiments, when the aerosol-generating substrate 300 is housed within the receiving cavity 11, the end surface of the core 302 proximate the opening 12 may be flush with the electromagnetic heating coil 20; , but is not limited here.

The heating assembly 200 further includes a mounting frame 30 , the electromagnetic heating coil 20 is spirally provided outside the mounting frame 30 , and the heating element 10 is provided within the mounting frame 30 . In this way, the assembly and fixing of the heating element 10 and the electromagnetic heating coil 20 becomes easy.

Referring to FIG. 4, the mounting frame 30 has a positioning groove 31 extending spirally in the axial direction, and the electromagnetic heating coil 20 is fitted into the positioning groove 31. Specifically, the positioning groove 31 This is a tracing groove manufactured to imitate the shape of the electromagnetic heating coil 20 so that the electromagnetic heating coil 20 is securely fixed on the mounting frame 30.

Referring to FIG. 3 , the heating assembly 200 further includes a magnetic shielding member 40 provided outside the electromagnetic heating coil 20 . The magnetic shield member 40 can fix the electromagnetic heating coil 20, while the magnetic shield member 40 can prevent the electromagnetic heating coil 20 from radiating electromagnetic waves to the outside. Specifically, the magnetic shielding member 40 is bonded and fixed to the electromagnetic heating coil 20.

Referring to FIG. 5, the electromagnetic heating coil 20 has a sub-coil 21 having a plurality of turns in the axial direction. Specifically, the electromagnetic heating coil 20 has at least one bundle of conductive wires extending spirally along the axial direction. each conductor bundle includes at least two conductor wires, that is, each conductor bundle includes at least two conductor wires, and each conductor bundle includes at least two (two) conductor wires twisted. Consisted of.

Referring to FIG. 6, the subcoil 21 of each turn has a first dimension H in the axial direction and a second dimension W in the radial direction, and the first dimension H is larger than the second dimension W. .

In the electromagnetic heating coil 20, the dimension in the radial direction of the subcoil 21 of each turn is smaller than the dimension in the axial direction, and the cross section of the subcoil 21 of each turn of the electromagnetic heating coil 20 of the prior art is circular (electromagnetic heating coil 20 When the cross section of the subcoil 21 is circular, there are the following advantages compared to the case where the radial dimension and the axial dimension of the subcoil 21 of each turn are equal.
1. By reducing the radial dimension of the electromagnetic heating coil 20, the radial dimension (space in the lateral direction) of the electronic atomizer 100 can be reduced, which is advantageous for downsizing the electronic atomizer 100.
2. When the diameter of the entire electromagnetic heating coil 20 is the same, a larger outer circumference is more advantageous for heat dissipation from the electromagnetic heating coil 20, reducing the temperature of the electromagnetic heating coil 20 and the loss of the electromagnetic heating coil 20. This improves the service life of the electromagnetic heating coil 20.
3. When the diameter of the entire electromagnetic heating coil 20 is the same, the projected area of the orthographic projection of the electromagnetic heating coil 20 onto the plane where the heating element 10 is located is larger, which increases the heating area and improves the uniformity of the magnetic field. can be improved.

At the same time, the electromagnetic heating coil 20 provided by this embodiment is configured such that at least one bundle of conductive wires extends spirally along the axial direction, and each bundle of conductive wires includes at least two conductive wires. Therefore, compared to the case where the electromagnetic heating coil 20 of the prior art is configured of a flat metal strip extending spirally, the alternating current resistance of the electromagnetic heating coil 20 with high frequency current can be reduced, and the electromagnetic heating coil 20 can be Energy loss of the atomization device 100 itself can be reduced.

In one embodiment, the cross-sectional shape of the subcoil 21 of each turn 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 the subcoil 21 of each turn is rectangular, one set of long sides of the rectangle is arranged in the axial direction, By radially arranging a pair of short sides, it is possible to ensure that the axial dimension of the subcoil 21 of each turn is larger than the radial dimension, i.e. the first dimension H is equal to the first dimension H. It can be guaranteed that the dimension W of 2 is larger than the dimension W of 2.

In another embodiment, the cross-sectional shape of the subcoil 21 of each turn is elliptical. Since an ellipse has one major axis and one minor axis, when the cross-sectional shape of the subcoil 21 of each turn is an ellipse, the major axis is arranged in the axial direction and the minor axis is arranged in the radial direction. Accordingly, it is possible to ensure that the dimension in the axial direction of the subcoil 21 of each turn is larger than the dimension in the radial direction, that is, it is ensured that the first dimension H is larger than the second dimension W. be able to.

As can be understood, and in other embodiments, the cross-sectional shape of the subcoil 21 of each turn is not limited to the rectangular and elliptical shapes described above, but can be set as desired.

In one embodiment, the electromagnetic heating coil 20 is configured by one bundle of conductive wires spirally extending along the axial direction, and the number of conductive wires included in each conductive wire bundle is 15 to 300, The diameter of each conductor wire is 0.02 mm to 0.5 mm. Specifically, each conducting wire bundle includes 100 conducting wires, and the diameter of each conducting wire is 0.1 mm. When manufacturing the electromagnetic heating coil 20, first, 100 conductive wires with a diameter of 0.1 mm are twisted together to form one conductive wire bundle, and then the conductive wire bundle is pressed into the desired shape using special equipment. Finally, the conductive wire bundle is spirally extended in the axial direction to form the electromagnetic heating coil 20.

In another embodiment, the electromagnetic heating coil 20 is configured by a plurality of conductive wire bundles extending spirally in the axial direction, and the number of conductive wires included in each conductive wire bundle is 15 to 300. The diameter of the 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 spirally in the axial direction, each bundle of conductor wires including 100 conductor wires, and the diameter of each conductor wire is 0.1 mm. It is. When manufacturing the electromagnetic heating coil 20, first, 100 conductive wires with a diameter of 0.1 mm are twisted together to form one conductive wire bundle, then three bundles of conductive wires are twisted together, and then the conductive wires are twisted together using special equipment. The twisted bundle of conductive wires is pressed into a desired shape, and finally the three bundles of conductive wires pressed into a specific shape are extended spirally in the axial direction to form the electromagnetic heating coil 20.

Of course, in other embodiments, the number of conducting wire bundles included in the electromagnetic heating coil 20, the number of conducting wire strands included in each conducting wire bundle, and the diameter of the conducting wire of each strand are not particularly limited. For example, in some embodiments, the electromagnetic heating coil 20 is configured by two bundles of conductive wire extending in a spiral shape in the axial direction, each bundle of conductive wire including 150 conductive wires, and the diameter of each conductive wire. is 0.05mm.

Still referring to FIG. 6, the electromagnetic heating coil 20 includes a first helical segment 22 and a second helical segment 23 connected in sequence from one end to the other in the axial direction. The pitch between any two adjacent turns of subcoils 21 in the first helical segment 22 is smaller than the pitch between any two adjacent turns of subcoils 21 in the second helical segment 23 .

Referring to FIG. 2, taking the direction in FIG. 2 as an example, the axial direction of the electromagnetic heating coil 20 is the up-down direction in FIG. 2, and the radial direction is the left-right direction in FIG. 2.

The opening 12 is provided at the upper end of the heating element 10, and the aerosol generation substrate 300 is inserted into the accommodation cavity 11 from top to bottom, in this case, the core 302 of the aerosol generation substrate 300 is accommodated in the accommodation cavity 11. Ru. The first helical segment 22 is provided at the upper end of the second helical segment 23.

In this way, the pitch between any two adjacent turns of subcoils 21 in the first helical segment 22 is the same as the pitch between any two adjacent turns of subcoils 21 in the second helical segment 23. Compared to the electromagnetic heating coils 20 provided at the same pitch in the prior art, the magnetic induction strength of the electromagnetic heating coil 20 changes when energized. The temperature of the upper part of the core 302 housed in the accommodation cavity 11 increases, and the temperature rise rate of the upper part of the core 302 accommodated in the accommodation cavity 11 increases, thereby increasing the initial atomization rate and amount of atomization of the electronic atomization device 100, and improving the inhalation texture. is improved.

What should be explained here is that the pitch between the two adjacent subcoils 21 is the distance in the axial direction between the two adjacent subcoils 21.

Furthermore, referring to FIGS. 5 and 6, the pitch between any two adjacent turns of the subcoils 21 of the first helical segment 22 is equal, and the pitch between any two adjacent turns of the second helical segment 23 is equal. The pitches between the subcoils 21 are equal. In this way, manufacturing of the electromagnetic heating coil 20 becomes easy. It should be understood that in other embodiments, the pitches between adjacent two-turn subcoils 21 included in the first helical segment 22 may be unequal or only partially equal; The pitches between the adjacent two-turn subcoils 21 included in the two helical segments 23 may be unequal or only partially equal.

In one embodiment, in order to further increase the temperature of the upper part of the heating element 10 in the axial direction, the number of turns of the subcoil 21 included in the first helical segment 22 is included in the second helical segment 23. The number of turns is greater than the number of turns of the subcoil 21. Of course, in other embodiments, the number of turns of the subcoil 21 included in the first helical segment 22 may be smaller than the number of turns of the subcoil 21 included in the second helical segment 23.

The pitch between any two adjacent turns of the subcoils 21 in the first helical segment 22 is 0 mm to 4 mm, and the pitch between any two adjacent turns of the subcoils 21 in the second helical segment 23 is 0 mm to 4 mm. The pitch is 0.5 mm to 8 mm. What should be explained here is that the pitch between two adjacent turns of subcoils 21 in the first helical segment 22 and the pitch between two adjacent turns of subcoils 21 in the second helical segment 23 are as follows: It is not particularly limited and can be selected as necessary.

In one example, and referring to FIG. 7, the electromagnetic heating coil 20 further includes a third helical segment 24, and the second helical segment 23 is a combination of the first helical segment 22 and the third helical segment 24. connected to segment 24; The pitch between any two adjacent turns of subcoils 21 in the third helical segment 24 is smaller than the pitch between any two adjacent turns of subcoils 21 in the second helical segment 23 .

In this way, the pitch between any two adjacent turns of subcoils 21 in the first helical segment 22 and the pitch between any two adjacent turns of subcoils 21 in the third helical segment 24 are smaller than the pitch between any two adjacent turns of the subcoils 21 of the second helical segment 23, so when compared with the electromagnetic heating coils 20 provided at the same pitch in the prior art, When energized, the magnetic induction strength of the electromagnetic heating coil 20 changes, so the temperature of the heating element 10 directly facing the upper part of the electromagnetic heating coil 20 increases, and the temperature difference between the upper part, middle part, and lower part of the heating element 10 in the axial direction increases. is smaller, the amount of atomization decreases more slowly during the inhalation process, and the uniformity of the amount of atomization during the inhalation process is improved.

Since the pitch between any two adjacent turns of the subcoils 21 in the third helical segment 24 is equal, the electromagnetic heating coil 20 can be manufactured easily. It should be understood that in other embodiments, the pitches between adjacent two-turn sub-coils 21 in the third helical segment 24 may not be equal or only partially equal. good.

Furthermore, the pitch between any two adjacent turns of subcoils 21 in the first helical segment 22 is less than or equal to the pitch between any two adjacent turns of subcoils 21 in the third helical segment 24. be. Of course, in other embodiments, the pitch between any two adjacent turns of the subcoils 21 of the first helical segment 22 may be the same as the pitch between any two adjacent turns of the subcoils 21 of the third helical segment 24. Alternatively, the pitch between adjacent two-turn subcoils 21 of the first helical segment 22 may be greater than the pitch between adjacent two-turn subcoils 21 of the third helical segment 24. The pitch may be larger than the pitch between the two-turn subcoils 21 in the section.

In one embodiment, in order to further increase the temperature of the upper part of the heating element 10 in the axial direction, the number of turns of the subcoil 21 included in the first helical segment 22 is included in the third helical segment 24. The number of turns is greater than the number of turns of the subcoil 21. Of course, in other embodiments, the number of turns in the subcoil 21 included in the first helical segment 22 may be smaller than the number of turns in the subcoil 21 included in the third helical segment 24.

The pitch between any two adjacent turns of the third helical segment 24 is between 0 mm and 4 mm. What should be explained here is that the pitch between the two adjacent turns of the subcoils 21 of the third helical segment 24 is not particularly limited, and can be selected as necessary.

In order to understand the present invention more clearly, Examples and Comparative Examples will be compared and explained below.

In both Examples and Comparative Examples, the settings are as follows.
That is, the dimension in the axial direction of the electromagnetic heating coil 20 is 18 mm, the length of the core 302 is 20 mm, the core 302 is completely accommodated in the housing cavity 11 of the heating element 10, and the upper end surface of the core 302 is It is higher than the upper end surface of the heating coil 20 by 3 mm. The dimension in the axial direction of the subcoil 21 of each turn is 1.6 mm.

Referring to FIG. 8, three circles in FIG. 8 represent, from top to bottom, a high temperature field, a medium temperature field, and a low temperature field theoretically formed in the heating element 20.

In the comparative example, the electromagnetic heating coil 20 is a uniformly wound coil, that is, the pitch between two adjacent subcoils 21 of the electromagnetic heating coil 20 is equal.

As can be seen from FIG. 8, in the comparative example, the theoretical center of the high temperature field of the heating element 10 is the center position in the axial direction of the electromagnetic heating coil 20, that is, a position 6 mm below the upper end surface of the core 302.

In the example, the electromagnetic heating coil 20 includes a first helical segment 22 and a second helical segment 23, the first helical segment 22 having an axial dimension of 8 mm, and the second helical segment 22 having an axial dimension of 8 mm. The dimension of the shaped segment 23 in the axial direction is 10 mm. The first helical segment 22 includes five turns of the subcoil 21, and the pitch between the two adjacent turns of the subcoil 21 in the axial direction of the first helical segment 22 is zero. The second helical segment 23 includes three turns of subcoils 21, and the pitches in the axial direction of the two adjacent turns of the subcoils 21 of the second helical segment 23 are equal and close to 2 mm.

As can be seen from FIG. 8, in the embodiment, the theoretical center of the high temperature field of the heating element 10 is above the axial center position of the electromagnetic heating coil 20, that is, 3 mm below the upper end surface of the core 302.

As a result of the above comparison, by adopting the electromagnetic heating coil 20 provided by the embodiment of the present invention, the temperature of the upper part of the heating element 10 can be increased, so that the initial atomization of the electronic atomization device 100 It was found that it can ensure that you have a fast and good inhalation experience.

Another embodiment of the present invention further provides a heating assembly 200 included in the electronic atomization device 100.

Another embodiment of the present invention further provides an electromagnetic heating coil 20 included in the heating assembly 200. The electromagnetic heating coil 20 has a subcoil 21 with a plurality of turns in the axial direction, and includes a first helical segment 22 and a second helical segment 23 connected in order from one end to the other end in the axial direction. , the pitch between any two adjacent turns of subcoils 21 in the first helical segment 22 is smaller than the pitch between any two adjacent turns of subcoils 21 in the second helical segment 23. . In this way, compared to the electromagnetic heating coil 20 with a uniform pitch in the prior art, when electricity is applied to generate a magnetic field, the heating element 10 in the magnetic field generates heat, and the heating element 10 directly facing the first helical segment 22 generates heat. As the temperature of the body 10 increases, one end of the core 302 of the aerosol-generating substrate 300 closer to the user's inhalation end heats up faster, which allows the electronic nebulizer 100 to atomize faster, improving the user experience. let

The technical features of the embodiments described above can be combined arbitrarily, and in order to simplify the explanation, all possible combinations of the technical features of the embodiments described above are not explained. , unless there is a contradiction in the combination of these technical features, it should be considered within the scope described in this specification.

The above examples merely illustrate some embodiments of the present application, and although the description thereof is specific and detailed, it should not be understood as limiting the scope of the invention of the present application. It should be noted that those skilled in the art can make several modifications and improvements that fall within the scope of the present application without departing from the spirit thereof. Accordingly, the patentable scope of this application shall be as defined by the appended claims.

100 Electronic atomizer 200 Heating assembly 10 Heating element 11 Accommodation cavity 12 Opening 20 Electromagnetic heating coil 21 Sub-coil 22 First helical segment 23 Second helical segment 24 Third helical segment 30 Mounting frame 31 Positioning groove 40 Magnetic shielding member H First dimension W Second dimension 300 Aerosol generation substrate 301 Rod 302 Core

Claims (14)

An electromagnetic heating coil used in an electronic atomization device,
The electromagnetic heating coil has a subcoil with multiple turns in the axial direction,
The electromagnetic heating coil includes a first helical segment and a second helical segment connected in order from one end to the other end in the axial direction, and any two adjacent helical segments of the first helical segment The pitch between the sub-coils of turns is smaller than the pitch between the sub-coils of any two adjacent turns of the second helical segment. The pitches between the subcoils in any two adjacent turns of the first helical segment are equal, and the pitches between the subcoils in any two adjacent turns of the second helical segment are equal. The electromagnetic heating coil according to claim 1, characterized in that: The pitch between the sub-coils in any two adjacent turns of the first helical segment is 0 mm to 4 mm, and the pitch between the sub-coils in any two adjacent turns of the second helical segment is 0 mm to 4 mm. The electromagnetic heating coil according to claim 1, wherein the pitch is 0.5 mm to 8 mm. The electromagnetic heating according to claim 1, wherein the number of turns of the subcoil included in the first helical segment is greater than or equal to the number of turns of the subcoil included in the second helical segment. coil. The electromagnetic heating coil further includes a third helical segment, the second helical segment connected to the first helical segment and the third helical segment,
The pitch between the subcoils in any two adjacent turns of the third helical segment is smaller than the pitch between the subcoils in any two adjacent turns of the second helical segment. The electromagnetic heating coil according to claim 1, characterized in that: The electromagnetic heating coil according to claim 5, wherein pitches between the subcoils in any two adjacent turns of the third helical segment are equal. The pitch between the subcoils in any two adjacent turns of the first helical segment is less than or equal to the pitch between the subcoils in any two adjacent turns of the third helical segment. The electromagnetic heating coil according to claim 5, characterized in that: The electromagnetic heating according to claim 5, wherein the number of turns of the subcoil included in the first helical segment is greater than or equal to the number of turns of the subcoil included in the third helical segment. coil. The electromagnetic heating coil according to claim 5, wherein a pitch between the subcoils in any two adjacent turns of the third helical segment is 0 mm to 4 mm. The electromagnetic heating coil is configured such that at least one bundle of conductive wires extends spirally along the axial direction, and each bundle of conductive wires includes at least two conductive wires,
The subcoil of each turn included in the electromagnetic heating coil has a first dimension in the axial direction and a second dimension in the radial direction, and the first dimension is equal to the second dimension. The electromagnetic heating coil according to claim 1, wherein the electromagnetic heating coil is larger than . a heating element having a housing cavity therein and an opening communicating with the housing cavity at an axially upper end thereof;
An electromagnetic heating coil according to any one of claims 1 to 10 fitted externally to the heating element,
In the axial direction, both ends of the heating element are respectively located on both sides of the intermediate position of the electromagnetic heating coil, and in the axial direction, the first helical segment is located above the second helical segment. A heating assembly characterized in that: The electromagnetic heating coil further includes a third helical segment, the second helical segment connected to the first helical segment and the third helical segment,
The pitch between the subcoils in any two adjacent turns of the third helical segment is smaller than the pitch between the subcoils in any two adjacent turns of the second helical segment. 12. The heating assembly of claim 11. The heating assembly further includes a mounting frame, the electromagnetic heating coil is fitted onto the mounting frame, and the heating element is disposed within the mounting frame;
The heating assembly according to claim 11, wherein the mounting frame has a positioning groove extending spirally along the axial direction, and the electromagnetic heating coil is fitted into the positioning groove. 12. The heating assembly of claim 11, further comprising a magnetic shielding member fitted over the electromagnetic heating coil.