Electromagnetic induction components, heating devices and electronic cigarettes

Abstract

An electromagnetic induction member (102), a heating device (110) and an electronic cigarette (100) are provided. The electromagnetic induction member (102) includes a conductive layer (111) and a support frame (112), and the conductive layer (111) is coupled to the support frame (112). The electromagnetic induction member (102) can simplify the internal structure of the heating device (110), and reduce the overall external size of the heating device (110), thereby reducing the external mechanical size of the electronic cigarette (100).

Description

[Technical field]

[0001] Field The present disclosure relates to the field of electronic cigarette device technology, and more particularly to an electromagnetic induction member, a heating device having an electromagnetic induction member, and an electronic cigarette having a heating device. [Background technology]

[0002] background As for related technologies, electronic cigarettes mainly use resistance heating and electromagnetic induction heating. Electromagnetic induction heating has attracted attention due to its advantages such as fast temperature rise, uniform heating, high-precision temperature control, and good tobacco carbonization effect. Summary of the Invention [Problem to be solved by the invention]

[0003] At present, the heating devices for electronic cigarettes on the market have a relatively large number of internal structural components, complicated structures and manufacturing processes, and high manufacturing costs. In addition, the electromagnetic induction heating coils are mostly formed by winding solid metal wires, so the thickness of the heating area of ​​the electronic cigarette and the overall size of the electronic cigarette are relatively large, which makes the electronic cigarette inconvenient to carry and reduces the user experience. [Means for solving the problem]

[0004] summary In order to solve the above problems, the present disclosure provides an electromagnetic induction member with a simple structure and small overall size, a heating device having an electromagnetic induction member, and an electronic cigarette having a heating device.

[0005] The present disclosure provides an electromagnetic induction member including a conductive layer and a support frame, the conductive layer being coupled to the support frame.

[0006] Optionally, the conductive layer is an elongated strip, the conductive layer extending spirally around the outer wall of the support frame in a first direction, the first direction being an axial direction of the support frame.

[0007] Optionally, the conductive layer is in the form of elongated strips of equal width.

[0008] Optionally, the conductive layer is deposited on the support frame.

[0009] Optionally, the conductive layer is a plating layer.

[0010] Optionally, the conductive layer is formed on the support frame.

[0011] Optionally, the conductive layer has a thickness dimension in the range of 0 to 0.2 mm.

[0012] Optionally, the support frame further comprises a matte layer, the conductive layer being bonded to the matte layer, and the matte layer having a surface roughness greater than 0.8 μm.

[0013] Optionally, the support frame is provided with a groove, the groove extending spirally around an outer wall of the support frame in an axial direction of the support frame, and the conductive layer is disposed in the groove.

[0014] The present disclosure further provides a heating device, including a heating element and an electromagnetic induction member according to any one of the preceding embodiments, wherein an accommodating space is formed inside the support frame, the heating element is at least partially disposed in the accommodating space, and the conductive layer is coupled to an outer wall of the support frame facing away from the heating element.

[0015] Optionally, the heating element is either a needle-like structure, a sheet-like structure, a tubular structure or a columnar structure.

[0016] Optionally, the heating device further includes a fixing part, the fixing part being fixed to an end of the accommodating space, and the heating element being fixed to the fixing part and arranged coaxially with the support frame.

[0017] The present disclosure further provides an electronic cigarette, comprising a housing and a heating device according to any one of the preceding embodiments, the heating device being secured inside the housing and configured to heat tobacco.

[0018] Optionally, the electronic cigarette further comprises a tobacco container having a tubular structure, the tobacco container being housed in the support frame and movable in a first direction relative to the support frame, and a tobacco being disposed in the tobacco container.

[0019] Optionally, the tobacco container includes a bottom wall and a side wall, the side wall being arranged around a peripheral side of the bottom wall to form a receiving cavity, tobacco being placed in the receiving cavity, the bottom wall being provided with a through hole, and the heating element extending through the through hole into the interior of the tobacco container to heat the tobacco.

[0020] Optionally, the electronic cigarette further comprises an insulating layer disposed between the heating device and the housing.

[0021] Optionally, the electronic cigarette further comprises a shielding member disposed between the heating device and the housing.

[0022] Optionally, the electronic cigarette further includes a control module and a power module, the control module disposed within the housing, the control module electrically connected to the heating device such that components of the electronic cigarette operate in conjunction with each other, and the power module disposed within the housing and configured to provide electrical energy to the components of the electronic cigarette. Effect of the Invention

[0023] According to the electromagnetic induction member of the present disclosure, the conductive layer is bonded to the support frame, so that the conductive layer and the support frame are formed into an inseparable integrated structure, thereby avoiding the formation of a gap between the conductive layer and the support frame, reducing the overall size of the electromagnetic induction member, and simplifying the structure of the electromagnetic induction member.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings necessary for describing the embodiments are briefly introduced below. Obviously, the accompanying drawings in the following description show some embodiments of the present disclosure, and those skilled in the art can derive other drawings from these accompanying drawings without creative efforts. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic diagram of the operating principle of heating using electromagnetic induction. [Figure 2a] FIG. 2a is a schematic structural diagram of an electronic cigarette without a cigarette inserted according to one embodiment of the present disclosure. [Figure 2b] FIG. 2b is a schematic structural diagram of a cigarette inserted into the electronic cigarette of the present disclosure from a side view angle in the embodiment shown in FIG. 2a. [Diagram 3] FIG. 3 is a schematic structural diagram of the electronic cigarette of the present disclosure from a side view angle. [Figure 4] FIG. 4 is a schematic cross-sectional structural diagram of the electronic cigarette of the present disclosure from a side angle in the embodiment shown in FIG. [Diagram 5] FIG. 5 is a schematic partial cross-sectional structural diagram of the heating device of the present disclosure seen from a side angle in this embodiment. [Figure 6] FIG. 6 is a schematic diagram of the support frame according to this embodiment, as viewed from the side. [Figure 7] FIG. 7 is a schematic partial enlarged view of structure I of the control module in the embodiment shown in FIG. [Figure 8]FIG. 8 is a schematic partial enlarged view of structure II of the electronic cigarette in the embodiment shown in FIG. 4 according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Detailed Description In order to facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the accompanying drawings. The accompanying drawings show exemplary embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments set forth herein. Rather, the embodiments are provided to provide a more comprehensive understanding of the disclosure content of the present disclosure.

[0027] The following embodiments are described with reference to the accompanying drawings and are used to illustrate specific embodiments that may be used to implement the present disclosure. The serial numbers of parts, such as "first" and "second" in this specification, are used only to distinguish the objects being described and do not have any order or technical meaning. In this disclosure, "connection" and "coupling" include direct and indirect connections (couplings) unless otherwise specified. The directional terms referred to in this disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely intended to indicate directions with reference to the accompanying drawings. Thus, the directional terms used are not intended to suggest or imply that a device or element needs to have a particular orientation, needs to be constructed in a particular orientation, and needs to operate in a particular orientation, but are intended to better and more clearly explain and understand the present disclosure. Thus, the directional terms used cannot be interpreted as limitations on the present disclosure.

[0028] In the description of the present disclosure, it should be noted that unless expressly specified or defined, the terms "install", "connect", "connection", etc. should be understood in a broad sense. For example, the connection may be a fixed connection, a removable connection, or an integral connection. The connection may be a mechanical connection. The connection may be a direct connection, an indirect connection through an intermediary, or an internal communication between two elements. Those skilled in the art can understand the specific meaning of the terms in the present disclosure according to the specific situation. In the description, claims, and accompanying drawings of the present disclosure, it should be noted that the terms "first", "second", etc. are intended to distinguish between different objects and do not indicate a specific order. In addition, the terms "include", "may include", "include", "may comprise", etc. used in the present disclosure indicate the presence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. Additionally, the terms "including" or "comprising" indicate the presence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the description, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, but are intended to cover a non-exclusive inclusion.

[0029] Unless otherwise defined, the meanings of all technical and scientific terms used herein are the same as those commonly understood by those skilled in the art to which this disclosure belongs. In this specification, the terms used in the description of the present disclosure are intended only to describe the subject matter of certain embodiments and are not intended to limit the present disclosure.

[0030] Referring to FIG. 1, FIG. 1 is a schematic diagram of the working principle of heating using electromagnetic induction. As shown in FIG. 1, when electromagnetic induction is used for heating, a metal coil 1 is usually used wound around a coil support 2 to form a helical heating coil 1a. The coil support 2 has a hollow structure. A heated part 3 is disposed inside the coil support 2 coaxially with the coil support 2, and the heated part 3 is a material having magnetic permeability such as a metal.

[0031] When an alternating current of a certain frequency is applied to the metal coil 1, the spirally wound heating coil 1a generates an alternating magnetic field 5. The heated part 3 placed in the alternating magnetic field 5 continuously cuts the alternating magnetic field lines 5a, generating an alternating current, i.e., an eddy current, inside the heated part 3. The eddy current causes the atoms inside the heated part 3 to move randomly at high speed, causing them to continuously collide and rub against each other, thereby generating thermal energy. In other words, the heating effect of the heated part 3 is achieved through electromagnetic induction. Furthermore, the heating temperature of the heated part 3 can be controlled by controlling the frequency of the alternating current.

[0032] Based on the working principle of electromagnetic induction heating shown in Fig. 1, the electronic cigarette of the present disclosure uses an electromagnetic induction heating method, and prepares a corresponding induction support (i.e., a support frame) by bonding a conductive layer to a plastic support, which not only simplifies some structural parts, but also reduces the difficulty of assembly and manufacturing.

[0033] 2a and 2b, FIG. 2a is a schematic structural diagram of an electronic cigarette 100 according to an embodiment of the present disclosure without a cigarette 200 inserted therein. FIG. 2b is a schematic structural diagram of the embodiment shown in FIG. 2a with a cigarette 200 inserted into the electronic cigarette 100 of the present disclosure from a side angle. As shown in FIG. 2a, the end of the electronic cigarette 100 of the present disclosure has an insertion hole 100a for inserting the cigarette 200 into the electronic cigarette 100 of the present disclosure. The cigarette 200 may be tobacco oil, special cut tobacco (i.e., cartridge), etc. As shown in FIG. 2b, the cigarette 200 is inserted and fixed into the electronic cigarette 100 of the present disclosure through the insertion hole 100a at the end of the electronic cigarette 100 of the present disclosure, and then the electronic cigarette 100 of the present disclosure uses electromagnetic induction to heat the cigarette 200.

[0034] 3 and 4, FIG. 3 is a schematic structural diagram of the electronic cigarette 100 of the present disclosure from a side view angle. FIG. 4 is a schematic cross-sectional structural diagram of the electronic cigarette 100 of the present disclosure from a side view angle in the embodiment shown in FIG. 3. In an embodiment of the present disclosure, the electronic cigarette 100 includes a heating device 110, a control module 120, a power module 130, and a housing 140. As shown in FIG. 3, the cross-sectional shape of the housing 140 is circular, the structure is a hollow tubular structure, and extends in a first direction 001. The first direction 001 is the axial direction of the electronic cigarette 100. In some other embodiments of the present disclosure, the cross-sectional shape of the housing 140 may be rectangular, elliptical, or other shapes.

[0035] 4, the heating device 110, the control module 120 and the power module 130 are all fixed inside the housing 140, and the heating device 110, the control module 120 and the power module 130 are connected to each other via wiring or other elements (not shown) capable of realizing an electrical connection function, so that the control module 120 can control the coordinated operation of the internal components of the electronic cigarette 100 of the present disclosure. In addition, the power module 130 supplies electrical energy to the internal components of the electronic cigarette 100 of the present disclosure, so that the electronic cigarette 100 can operate normally.

[0036] In one embodiment of the present disclosure, the heating device 110 may be positioned at the end close to the insertion port 100a, so that when the cigarette 200 is inserted into the electronic cigarette 100 of the present disclosure through the insertion port 100a, the cigarette 200 inserted into the electronic cigarette 100 can be heated by the heating device 110.

[0037] In one embodiment of the present disclosure, the power supply module 130 may be a storage battery, a lithium manganese oxide battery, or the like.

[0038] In one embodiment, the electronic cigarette 100 of the present disclosure further includes a cigarette container 150, which is configured to place the cigarettes 200. Specifically, as shown in FIG. 4, the cigarette container 150 is disposed inside the support frame 112 (shown in FIG. 5) of the heating device 110, and is disposed coaxially with the housing 140. In other words, the cigarette container 150 extends in a first direction 001, and the cigarette container 150 is movable in the first direction 001 relative to the support frame 112. The material of the cigarette container 150 is a food-grade plastic material. For example, the material of the cigarette container 150 may be a semi-crystalline aromatic plastic engineering plastic (polyether ether ketone (PEEK)) material.

[0039] Moreover, the cigarette container 150 is generally a hollow tubular structure, and includes a bottom wall 151 and a side wall 152. The bottom wall 151 and the side wall 152 form a receiving cavity 153 having a first opening (not shown). The first opening is disposed on the opposite side to the bottom wall 151, i.e., the first opening and the bottom wall 151 are two opposite ends of the receiving cavity 153. The receiving cavity 153 is a cavity having an opening at one end. The first opening is adjacent to an end of the insertion port 100a of the electronic cigarette 100, so that the cigarette 200 can be inserted into the cigarette container 150 from the first opening through the insertion port 100a. The storage cavity 153 is configured to secure and remove the cigarette 200, i.e., when the cigarette 200 is inserted into the storage cavity 153, the cigarette container 150 can secure the cigarette 200, and when the cigarette 200 needs to be removed from inside the storage cavity 153, the cigarette container 150 can remove the cigarette 200 as a whole, thereby preventing the cigarette 200 from remaining in the electronic cigarette 100.

[0040] In one embodiment of the present disclosure, the bottom wall 151 has a through hole 151a. The cross-sectional shape of the through hole 151a matches the cross-sectional shape of the heating element 113 (shown in FIG. 5 ) in the heating device 110 of the present disclosure, so that the heating element 113 can extend through the through hole 151a into the cigarette container 150, thereby heating the cigarette 200.

[0041] Referring to FIG. 5, FIG. 5 is a partial schematic cross-sectional structural view of the heating device 100 of the present disclosure from a side view angle in this embodiment. The heating device 110 of the present disclosure includes an electromagnetic induction member 102 and a heating element 113. The electromagnetic induction member 102 includes a conductive layer 111 and a support frame 112. As shown in FIG. 5, the conductive layer 111 is bonded to the support frame 112, so that the conductive layer 111 and the support frame 112 are formed into an inseparable integral structure, which avoids the formation of a gap between the conductive layer 111 and the support frame 112, thereby reducing the overall size of the electromagnetic induction member 102 and simplifying the structure of the electromagnetic induction member 102. Furthermore, as shown in FIG. 5, the support frame 112 is housed inside the housing 140 and extends in a first direction 001. 5, the support frame 112 is a generally hollow tubular structure, and an outer diameter of the support frame 112 matches an inner diameter of the housing 140 such that the support frame 112 is fixed relative to the housing 140, i.e., the support frame 112 is attached and fixed to the housing 140. In some other embodiments of the present disclosure, the cross-sectional shape of the support frame 112 may be rectangular, oval, etc.

[0042] In one embodiment of the present disclosure, a receiving space is formed inside the support frame 112, the heating element 113 is at least partially disposed in the receiving space, and the conductive layer 111 is coupled to the outer wall 112a of the support frame 112 facing outward from the heating element 113. The coupling includes, but is not limited to, a connecting relationship such as precise fitting, fusion, at least partial embedding, etc. In other words, the conductive layer 111 may be disposed on the outer wall 112a of the support frame 112 facing outward from the heating element 113 by a connecting method such as precise fitting, fusion, at least partial embedding, etc., so that there is no gap between the conductive layer 111 and the outer wall 112a of the heating element 113.

[0043] In one embodiment of the present disclosure, the support frame 112 may be made from a high temperature resistant plastic material, such as a PEEK material or a polyimide (PI) material.

[0044] Moreover, the conductive layer 111 is generally a long strip-like structure and is disposed around the outer wall 112a of the support frame 112. Specifically, as shown in FIG. 5, a layer of conductive metal material is deposited in a spiral shape around the central axis 002 of the support frame 112 to form the conductive layer 111 having a spiral structure extending in a first direction 001 on the outer wall 112a. By forming the conductive layer 111 in a long strip shape and extending the conductive layer 111 in a spiral shape around the outer wall 112a of the support frame 112 in the first direction 001, an alternating magnetic field can be generated after applying an alternating current to the conductive layer 111. The conductive layer 111 is deposited on the outer wall 112a of the support frame 112 facing outward from the heating element 113. The deposition causes some atoms, molecules, ions, etc. of the conductive layer 111 to fuse with some atoms, molecules, ions, etc. of the outer wall 112a, so that the conductive layer 111 partially fuses with or exactly conforms to the outer wall 112a, and the conductive layer 111 and the support frame 112 are seamlessly connected and formed into an inseparable body.

[0045] In one embodiment of the present disclosure, the thickness of the conductive layer 111 is in the range of 0 to 0.2 mm, for example, 0.02 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.18 mm, 0.2 mm or other values. If necessary, the conductive layer 111 may be deposited on the outer wall 112a by electroplating, chemical plating, laser direct structuring (LDS) process, physical vapor deposition (PVD) process, chemical vapor deposition (CVD) technique, etc. The material of the conductive layer 111 may be a metal with good electrical conductivity, such as copper, nickel, silver, gold, or zinc.

[0046] The conductive layer 111 is deposited on the outer wall 112a by physical vapor deposition, such that the conductive layer 111 is bonded to the outer wall 112a of the support frame 112. The conductive layer 111 is deposited on the outer wall 112a by chemical vapor deposition, such that the conductive layer 111 is bonded to the outer wall 112a of the support frame 112.

[0047] In one embodiment, the conductive layer 111 is a plating layer. In other words, in this embodiment, the conductive layer 111 may be further bonded to the outer wall 112a by electroplating or chemical plating, and is integrally formed with the support frame 112.

[0048] In one embodiment, the conductive layer 111 is formed on a support frame 112 .

[0049] In one embodiment, the conductive layer 111 is bonded to the outer wall 112a by laser direct structuring and further integrally formed with the support frame 112.

[0050] In one embodiment, the conductive layer 111 is in the form of long strips of equal width.

[0051] In this embodiment, the conductive layer 111 is formed in a long strip shape with a uniform width, so that a uniform AC magnetic field can be formed after an AC current is applied to the conductive layer.

[0052] As shown in FIG. 5, the conductive layer 111 deposited on the outer wall 112a includes multiple turns of a spiral coil 111a. Each turn of the spiral coil 111a has a width H. In an embodiment of the present disclosure, both the number of turns of the conductive layer 111 and the width H of each turn of the spiral coil 111a may be adjusted based on actual requirements. In this embodiment, the conductive layer 111 is formed by depositing a layer of conductive metal material on the support frame 112, which improves the connection reliability between the conductive layer 111 and the support frame 112 and simplifies the structure of the support frame 112. In addition, the overall external size of the heating device 110 of the present disclosure can be reduced, thereby reducing the design space of the electronic cigarette 100 occupied by the heating device 110 of the present disclosure and improving the user experience.

[0053] Further, as shown in FIG. 5, the fixing part 114 is fixed to the inner end of the support frame 112, i.e., the fixing part 114 is fixed to the end of the receiving space. The fixing part 114 is configured to fix the heating element 113, so that the heating element 113 is fixed to the support frame 112, and the heating element 113 and the support frame 112 are arranged coaxially. In the embodiment of the present disclosure, the material of the fixing part 114 may be a high-temperature plastic material, ceramic, etc., and the material of the heating element 113 is a material with high magnetic permeability, such as iron. The heating element 113 may be detachably connected to the fixing part 114 via a screw, which facilitates replacement of the heating element 113. It should be noted that the material with high magnetic permeability generally refers to a material that is magnetized by magnetic lines, i.e., attracted by a magnet, such as carbon steel or stainless steel.

[0054] Specifically, in the embodiment shown in Fig. 5, the heating element 113 may be a needle-like structure with a tip, which is directed toward the end of the receiving space. In other words, the tip is directed toward the end of the insertion port 100a, so that the heating element 113 is inserted into the cigarette 200, which produces the effect of heating the cigarette 200 by the heating element 113. In this embodiment, the needle-like structure of the heating element 113 increases the contact area between the heating element 113 and the cigarette 200 without affecting the insertion of the cigarette 200, thereby improving the heating efficiency and heating uniformity of the cigarette 200.

[0055] In some other embodiments of the present disclosure, the heating element 113 may instead be a sheet-like structure, a tubular structure, a columnar structure, or other structure.

[0056] Since the conductive layer 111 is a coil extending in a spiral shape around the heating element 113, after an alternating current of a certain frequency is applied to the conductive layer 111, the conductive layer 111 generates an alternating magnetic field (not shown) surrounding the heating element 113. When the magnetic field generated by the conductive layer 111 changes continuously, a phenomenon is formed in which the heating element 113 continuously cuts the magnetic field lines (not shown), and an alternating current, i.e., an eddy current, is continuously generated inside the heating element 113. The eddy current generated inside the heating element 113 causes the atoms inside the heating element 113 to move randomly at high speed, colliding and rubbing against each other continuously, thereby generating thermal energy. The thermal energy generated by the heating element 113 can heat the cigarette 200.

[0057] In this embodiment, the heating element 113 is heated to a predetermined temperature, and then the tobacco 200 disposed around the heating element 113 is heated and toasted. The predetermined temperature is typically in the range of 250 to 400°C.

[0058] In one embodiment, referring to FIG. 6, FIG. 6 is a schematic structural diagram of the support frame 112 from a side angle in this embodiment. In the embodiment shown in FIG. 6, the outer wall 112a of the support frame 112 is provided with a groove 112b. The groove 112b extends in a spiral shape around the outer wall 112a of the support frame 112 in a first direction 001. The opening direction of the groove 112b faces outward as viewed from the heating element 113. In this embodiment, the conductive layer 111 (shown in FIG. 5) extending in a spiral shape around the outer wall 112a of the support frame 112 in the first direction 001 can be formed by depositing a conductive metal material in the groove 112b. Also, since the groove 112b is provided in the outer wall 112a of the support frame 112, the conductive layer 111 can be embedded in the support frame 112, thereby improving the connection reliability between the conductive layer 111 and the support frame 112. Also, the external size of the heating device 110 can be further reduced.

[0059] In one embodiment, the surface roughness of the outer wall 112a of the support frame 112 is increased to further improve the connection reliability between the conductive layer 111 and the support frame 112. Specifically, in this embodiment, a matte layer (not shown) is fixed to the outer wall 112a of the support frame 112, i.e., the matte layer is disposed between the conductive layer 111 and the outer wall 112a. The surface roughness of the matte layer is greater than 0.8 μm. In some other embodiments of the present disclosure, a plurality of protruding points may be further provided on the outer wall 112a to increase the surface roughness of the outer wall 112a.

[0060] In this embodiment, since the surface roughness of the outer wall 112a of the support frame 112 is increased, the connection reliability between the conductive layer 111 and the support frame 112 can be further improved.

[0061] In the related art, when electromagnetic induction heating is used, a conductive coil is usually wound around a coil support to form a helical heating coil. Before the conductive coil is wound around the coil support, the conductive coil needs to be pre-treated, for example, by spraying insulating varnish and dipping adhesive, which increases the complexity of the manufacturing process of the heating device.

[0062] In addition, the structural complexity of the coil support increases, leading to increased manufacturing costs. In addition, in order to ensure heating efficiency and heating stability, existing heating devices usually use a conductive coil with a large diameter wound on a coil support. The conductive coil is detachably connected to the coil support, and there is a certain gap between the conductive coil and the coil support. As a result, the overall size of the heating device increases, the occupied space of the heating device inside the electronic cigarette increases, and the overall external size of the electronic cigarette increases, resulting in a poor user experience. In the related art, an electronic cigarette is used in which a conductive coil is wound on a coil support for heating, and the external mechanical diameter of the electronic cigarette is generally greater than 18 mm.

[0063] However, in the heating device 110 of the present disclosure, by using the electromagnetic induction member 102 of the present disclosure, the conductive layer 11 is directly formed on the outer wall 112a of the support frame 112 by depositing a layer of metal material, so that the conductive layer 111 and the support frame 112 are formed in an integral structure, which can improve the connection reliability between the conductive layer 111 and the support frame 112. Furthermore, by using the electromagnetic induction member 102 of the present disclosure, the internal structure of the heating device of the present disclosure can be simplified, the assembly efficiency can be improved, and the manufacturing cost can be reduced. Furthermore, the conductive layer 111 is formed by direct deposition. In this way, the processing step of pre-treating the conductive coil is eliminated, and the manufacturing process procedure of the heating device 110 of the present disclosure is simplified. Furthermore, some structures are simplified, and the difficulty of assembly and manufacturing is also reduced. Furthermore, the conductive layer 111 and the support frame 112 are in an integral structure, which can avoid the gap between the conductive layer 111 and the support frame 112, thereby reducing the external volume of the heating device 110 of the present disclosure. Furthermore, the thickness dimension of the conductive layer 111 is small, which can further reduce the overall external size of the heating device 110 of the present disclosure, and reduce the space occupied by the heating device 110 of the present disclosure in the electronic cigarette 100 of the present disclosure. Furthermore, to reduce the space occupied by the heating device 110 in the electronic cigarette 100 of the present disclosure, the external mechanical size of the electronic cigarette 100 of the present disclosure can be reduced, that is, the external mechanical diameter of the electronic cigarette 100 of the present disclosure is reduced to 16.5 mm or less, thereby improving the user's usage experience.

[0064] In this embodiment, referring to FIG. 7, FIG. 7 is a schematic partial enlarged view of the structure I of the control module 120 in the embodiment shown in FIG. 4. In the embodiment shown in FIG. 7, the control module 120 includes a main board component 121 and an interaction element 122. Specifically, as shown in FIG. 7, the main board component 121 is fixed inside the housing 140. The main board component 121 may be provided with elements such as a central processing unit (CPU) and a temperature control switch. These elements may output different control signals to a user based on different operating states of the electronic cigarette, or control the operating state of the electronic cigarette based on instructions input by a user. The interaction element 122 is electrically connected to the main board component 121, and the interaction element 122 is partially exposed from the housing 140 to facilitate user operation. The interaction element 122 is configured to output different operating signals to the user or receive instructions input by the user in real time, thereby realizing interaction between the user and the electronic cigarette, so that the user can conveniently and quickly control the electronic cigarette 100.

[0065] In one embodiment of the present disclosure, the main board component 121 may be a printed circuit board (PCB), etc. The interaction elements 122 include, but are not limited to, elements such as keys, indicator lights, vibration motors, etc.

[0066] In one embodiment, the power supply module 130 further includes a charging interface (not shown). The charging interface is configured to provide electrical energy to the power supply module 130, so that the power supply module 130 stores electrical energy. In this embodiment, the power supply module 130 may be an internal battery or an internal battery pack. The charging interface may be an external portable power compartment. The external portable power compartment has a larger electrical energy capacity than the internal battery and can provide a longer battery life for the product, so that the user heats the tobacco product multiple times.

[0067] In one embodiment, referring to Fig. 8, Fig. 8 is a schematic partial enlarged view of the structure II of the electronic cigarette 100 of the present disclosure in the embodiment shown in Fig. 4. In this embodiment, the electronic cigarette 100 of the present disclosure further includes an insulating layer 160. As shown in Fig. 4, the insulating layer 160 is disposed between the heating device 110 and the inner wall 140a of the housing 140. In other words, the insulating layer 160 is configured to completely cover the conductive layer 111 of the heating device 110 and prevent the heat generated by the heating device 110 from being diffused outward and lost when the heating device 110 heats the tobacco.

[0068] In one embodiment of the present disclosure, the insulating layer 160 may be an insulating foam layer, an aerogel insulating layer, a vacuum insulating tube layer, an insulating engineering plastic layer, etc. In other words, the insulating layer 160 is provided to improve the heating efficiency of the heating device 110 of the present disclosure. Furthermore, the surface temperature of the housing 140 can be effectively reduced, thereby improving the user experience.

[0069] In one embodiment, the electronic cigarette 100 of the present disclosure further includes a shielding member 170 having high magnetic permeability. The shielding member 170 is disposed between the insulating layer 160 and the inner wall 140a of the housing 140 and configured to minimize electromagnetic fields outside the electronic cigarette 100 of the present disclosure. In the embodiment shown in FIG. 8, the shielding member 170 is disposed between the insulating layer 160 and the inner wall 140a of the housing 140, i.e., the shielding member 170 completely covers the insulating layer 160.

[0070] In one embodiment of the present disclosure, the shielding member 170 may be an inner coating layer coated on the inner wall 140a of the housing 140, or may be a sheet material disposed between the heating device 110 and the housing 140.

[0071] Since the electronic cigarette 100 of the present disclosure uses the heating device 110 of the present disclosure, the electronic cigarette 100 of the present disclosure obtains all the beneficial effects of the heating device 110 of the present disclosure. Specifically, the heating device 110 of the present disclosure forms a conductive layer 111 by depositing a layer of conductive metal material on the support frame 112, so that the external size of the heating device 110 of the present disclosure can be reduced, thereby reducing the space occupied by the heating device 110 inside the electronic cigarette 100. In addition, the heating device 110 of the present disclosure has relatively few internal structural parts, a simplified structure, high assembly efficiency and low manufacturing cost. Furthermore, the electronic cigarette 100 of the present disclosure can be more compact in structural design and has a relatively smaller external size than the electronic cigarettes of the related art, thereby improving the user's usage experience.

[0072] It should be understood that terms such as "first", "second", etc. are used for descriptive purposes only and should not be construed as indicating or implying the relative importance or number of technical features depicted. Thus, features qualified by "first" and "second" explicitly indicate or implicitly include one or more features. In describing embodiments of the present disclosure, "plurality" means two or more unless expressly and specifically defined otherwise.

[0073] In the description herein, the description of a reference term such as "one embodiment," "some embodiments," "exemplary embodiments," "examples," "particular examples," or "some examples" means that a particular feature, structure, material, or characteristic described with reference to an embodiment or example is included in at least one embodiment or example of the present disclosure. In the present specification, general descriptions of the aforementioned terms do not necessarily refer to the same embodiment or example. In addition, the particular feature, structure, material, or characteristic described may be combined in any suitable manner in one or more embodiments or examples.

[0074] It should be understood that the application of the present disclosure is not limited to the above examples. Those skilled in the art may make improvements or modifications according to the above description, and all improvements and modifications should be included within the scope of protection of the appended claims of the present disclosure. Those skilled in the art understand the process of all or part of the above embodiments, and the equivalent modifications made according to the claims of the present disclosure should still be included in the scope of the present disclosure.

Claims

1. An electromagnetic induction member comprising a conductive layer and a support frame, the conductive layer being coupled to the support frame.

2. 2. The electromagnetic induction member according to claim 1, wherein the conductive layer is a long strip, the conductive layer extending spirally around the outer wall of the support frame in a first direction, the first direction being an axial direction of the support frame.

3. 3. The electromagnetic induction member according to claim 1, wherein the conductive layer is in the form of a long strip having a uniform width.

4. 4. An electromagnetic induction member according to claim 1, wherein the conductive layer is deposited on the support frame.

5. The electromagnetic induction member according to claim 1 , wherein the conductive layer is a plating layer.

6. The electromagnetic induction member according to claim 1 , wherein the conductive layer is formed on the support frame.

7. 7. The electromagnetic induction member according to claim 1, wherein the conductive layer has a thickness in the range of 0 to 0.2 mm.

8. 8. The electromagnetic induction member according to claim 1, wherein the support frame further comprises a matte layer, the conductive layer is bonded to the matte layer, and the surface roughness of the matte layer is greater than 0.8 μm.

9. 9. The electromagnetic induction member according to claim 1, wherein the support frame is provided with a groove, the groove extending spirally around the outer wall of the support frame in the axial direction of the support frame, and the conductive layer is disposed in the groove.

10. A heating device comprising a heating element and an electromagnetic induction member as described in any one of claims 1 to 9, wherein an accommodation space is formed inside the support frame, the heating element is at least partially disposed in the accommodation space, and the conductive layer is bonded to an outer wall of the support frame facing outward from the heating element.

11. The heating device according to claim 10 , wherein the heating element is one of a needle-like structure, a sheet-like structure, a tubular structure, and a columnar structure.

12. The heating device according to claim 10 or 11, further comprising a fixing part, the fixing part being fixed to an end of the accommodation space, and the heating element being fixed to the fixing part and arranged coaxially with the support frame.

13. 13. An electronic cigarette comprising a housing and a heating device according to any one of claims 10 to 12, said heating device being secured inside said housing and configured to heat tobacco.

14. 14. The electronic cigarette of claim 13, further comprising a tobacco container having a tubular structure, the tobacco container being housed in the support frame and movable in a first direction relative to the support frame, and a tobacco being disposed in the tobacco container.

15. 15. The electronic cigarette of claim 14, wherein the tobacco container comprises a bottom wall and a side wall, the side wall being disposed around a peripheral side of the bottom wall to form a receiving cavity, a tobacco being disposed in the receiving cavity, the bottom wall being provided with a through hole, and the heating element extending through the through hole into the interior of the tobacco container to heat the tobacco.

16. 16. The electronic cigarette of claim 13, further comprising an insulating layer, the insulating layer being disposed between the heating device and the housing.

17. 17. The electronic cigarette of claim 13, further comprising a shielding member, the shielding member being disposed between the heating device and the housing.

18. 18. The electronic cigarette of any one of claims 13 to 17, further comprising a control module and a power module, the control module being disposed within the housing and electrically connected to the heating device to enable components of the electronic cigarette to operate in conjunction with one another, and the power module being disposed within the housing and configured to supply electrical energy to the components of the electronic cigarette.

Images