Modular combination device having induction coil and inductance heating element

The modular integration of induction coil and inductance heating body in a tobacco heating device reduces size, improves shielding, and simplifies maintenance while enhancing thermal performance.

JP7842901B2Active Publication Date: 2026-04-08CHINA TOBACCO ANHUI IND CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-05-11
Publication Date
2026-04-08

AI Technical Summary

Technical Problem

Existing electromagnetic heating smoking devices have separate induction coil and inductance heating body designs, leading to large volume, poor electromagnetic shielding, and complex maintenance.

Method used

A modular combination device integrating the induction coil and inductance heating body, featuring a device case with sequential layers of heat insulation and electromagnetic shielding, a mortise and tenon joint for component stability, and a vacuum-insulated intermediate layer for enhanced thermal performance.

Benefits of technology

The solution reduces device size, improves electromagnetic shielding, facilitates easy maintenance, and enhances thermal insulation and heating efficiency.

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Patent Text Reader

Abstract

The modularized combined device has an induction coil and an inductance heater, and includes a device case (1) with an orifice therein. The orifice of the device case (1) is used for inserting a cigarette (2). The side wall of the device case (1) is provided with an induction coil (3), a heat insulating material layer (4), and an electromagnetic shielding coating layer (5) arranged in sequence from the inside to the outside. The heat insulating material layer (4) is not in contact with the electromagnetic shielding coating layer (5). The top of the orifice of the device case (1) is open. The bottom of the orifice of the device case (1) is sealed by the case base (6), and an inductance heater (13) is arranged in the orifice of the device case (1). The bottom of the inductance heater (13) is detachably attached to the case base (6). The inductance heater (13) is inserted into the bottom of the cigarette (2), and an electromagnetic field is generated by passing current through the induction coil (3). The inductance heater (13) cuts the magnetic field lines in the electromagnetic field to generate heat and heat the cigarette (2).
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Description

Technical Field

[0001] The present invention relates to the field of tobacco electromagnetic heating smoking device technology, and particularly to a modular combined device having an induction coil and an inductance heating body.

Background Art

[0002] The magnetic particle uniform heating smoking device adopts electromagnetic induction heating technology, generates an alternating electromagnetic field in the energized induction coil, and the inductance heating body (ferromagnetic material) inserted into the heating cigarette cuts the alternating electromagnetic field, and the inductance heating body generates heat for smoking to release the substances of the heating cigarette. In the prior art, electromagnetic heating smoking devices usually adopt a separate design form of an induction coil and an inductance heating body, and both the electromagnetic shielding and the heat insulation and heat preservation layer are separate devices. The inductance heating body is not designed for electromagnetic shielding, and after assembly, the volume of the whole machine becomes large, the electromagnetic shielding effect is poor, and the maintenance and replacement of the heating body are complicated, etc.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a modular combined device having an induction coil and an inductance heating body. By integrating the induction coil and the inductance heating body into one body, a modular combination is implemented, the volume of the whole machine of the electromagnetic heating smoking device is reduced, the electromagnetic shielding effect is improved, and the purpose of improving the miniaturization design ability of the electromagnetic heating smoking device is achieved.

Means for Solving the Problems

[0004] The present invention is implemented by the following technical solutions.

[0005] A modular combination device having an induction coil and an inductance heating element is provided, including a device case with an orifice inside, the orifice of the device case used for inserting a cigarette, the side wall of the device case is provided with an induction coil, a heat insulating material layer and an electromagnetic shielding coating layer arranged sequentially from the inside out, the heat insulating material layer does not come into contact with the electromagnetic shielding coating layer, the top of the orifice of the device case is open, the bottom of the orifice of the device case is sealed by a case base, the inductance heating element is placed inside the orifice of the device case, the bottom of the inductance heating element is detachably attached to the case base, the inductance heating element is inserted into the bottom of the cigarette, current is passed through the induction coil to generate an electromagnetic field, and the inductance heating element heats the cigarette by cutting magnetic field lines in the electromagnetic field.

[0006] Furthermore, a heating base is equipped at the bottom of the inductance heating element. The case base is formed by combining two separate case bases, and a mounting hole formed in the center of the case base matches the outer shape of the heating base. The heating base and the case base are joined by a mortise and tenon joint, and the case base is detachably connected to the bottom of the orifice of the device case.

[0007] Furthermore, in accordance with the fact that at least two tenons are uniformly distributed along the circumferential direction on the outer wall of the heating base, at least two mortises are uniformly distributed along the circumferential direction on the inner wall of the mounting hole of the case base, with each tenon engaging with each mortis in a one-to-one relationship, and the case base is connected to the bottom of the orifice of the device case by screw fastening.

[0008] Furthermore, the device case has a two-layer structure, with a vacuum intermediate layer formed between the inner and outer layers. The induction coil, heat-insulating material layer, and electromagnetic shielding coating layer are provided within the vacuum intermediate layer. The induction coil is wrapped around the outer wall of the inner layer case, the heat-insulating material layer encloses the outer circumference of the induction coil, and the electromagnetic shielding coating layer is provided on the inner wall of the outer layer case. The vacuum gap between the electromagnetic shielding coating layer and the heat-insulating material layer forms a vacuum-insulated intermediate layer.

[0009] Furthermore, the device case has a single-layer structure, the electromagnetic shielding coating layer is provided on the outer wall of the device case, the heat insulation and heat retention material layer is provided on the inner wall of the device case, and the induction coil is provided inside the heat insulation and heat retention material layer.

[0010] Furthermore, an electromagnetic shielding layer is applied to the bottom of the case base and the heating base.

[0011] Furthermore, the fitting between the outer wall of the heating base and the inner wall of the mounting hole in the case base is a toothed mesh.

[0012] Furthermore, conductive terminal contacts are provided at both ends of the induction coil, and the two conductive terminal contacts are drawn out from the device case. [Effects of the Invention]

[0013] The present invention offers the following advantages compared to the conventional technology.

[0014] 1. The modular combination device provided by the present invention, which has an induction coil and an inductance heating element, achieves both electromagnetic shielding and heat insulation performance by designing a modular combination of the induction coil and the inductance heating element, significantly reducing the overall size of the electromagnetic heating smoke device and improving the ability to design a compact device.

[0015] 2. The modular combination device provided by the present invention, which has an induction coil and an inductance heating element, is designed so that the case base of the device case is made into two separate independent case bases, and the two separate case bases are combined to form a mounting hole, and the connection between the heating base at the bottom of the inductance heating element and the mounting hole of the case base of the device case is a mortise and tenon joint, which ensures stable mounting of the inductance heating element and the device case, as well as enabling convenient and quick attachment and detachment between the two, and facilitating future replacement and maintenance of each component.

[0016] 3. The modular combination device provided by the present invention, which has an induction coil and an inductance heating element, is designed with a double-layer case structure for the device case. In addition to the thermal insulation material layer, the vacuum gap between the electromagnetic shielding coating layer and the thermal insulation material layer forms a vacuum-insulated intermediate layer, further enhancing thermal insulation performance, effectively preventing heat loss due to leakage, and significantly improving the heating efficiency of the cigarette. [Brief explanation of the drawing]

[0017] [Figure 1] This is a cross-sectional view of the device case according to the present invention when a two-layer case structure is applied. [Figure 2] This is an exploded perspective view of the inductance heating element and case base according to the present invention. [Figure 3] This is a perspective view of the device case according to the present invention in an opened state. [Modes for carrying out the invention]

[0018] The following describes in detail embodiments of the present invention. These embodiments are based on the technical solutions of the present invention and provide detailed embodiments and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0019] Please refer to FIGS. 1 to 3. This embodiment discloses a modular combined device having an induction coil and an inductance heating body. The modular combined device includes a device case 1 provided with an orifice inside. The orifice of the device case 1 is used for inserting a cigarette 2. On the side wall of the device case 1, an induction coil 3, a heat insulation and heat preservation material layer 4, and an electromagnetic shielding coating layer 5 are sequentially arranged from the inside to the outside. The heat insulation and heat preservation material layer 4 does not contact the electromagnetic shielding coating layer 5. The top of the orifice of the device case 1 is open, and the bottom of the orifice of the device case 1 is sealed by a case base 6. An inductance heating body 13 is arranged in the orifice of the device case 1. The bottom of the inductance heating body 13 is detachably attached to the case base 6. The inductance heating body 13 is inserted into the bottom of the cigarette 2. By energizing the induction coil 3 to generate an electromagnetic field, the inductance heating body 13 cuts the magnetic field lines in the electromagnetic field to generate heat and heat the cigarette 2.

[0020] Terminal conductive contacts 7 are provided at both ends of the induction coil 3. The two terminal conductive contacts 7 are drawn out from the device case 1 and are insulated from the device case 1.

[0021] The device case 1 can be designed as a single-layer case structure or a two-layer case structure.

[0022] The device case 1 is designed as a single-layer case structure. Its specific structure is that the electromagnetic shielding coating layer 5 is provided on the outer wall of the device case 1, the heat insulation and heat preservation material layer 4 is provided on the inner wall of the device case 1, and the induction coil 3 is provided inside the heat insulation and heat preservation material layer 4.

[0023] The device case 1 is designed as a two-layer case structure. Its specific structure is that a vacuum intermediate layer is formed between the inner and outer layer cases. The induction coil 3, the heat insulation and heat preservation material layer 4, and the electromagnetic shielding coating layer 5 are provided in the vacuum intermediate layer. The induction coil 3 is wound around the outer side wall of the inner layer case. The heat insulation and heat preservation material layer 4 wraps around the outer periphery of the induction coil 3. The electromagnetic shielding coating layer 5 is provided on the inner side wall of the outer layer case. And the vacuum gap between the electromagnetic shielding coating layer 5 and the heat insulation and heat preservation material layer 4 forms a vacuum heat insulation intermediate layer 8. By providing the vacuum heat insulation intermediate layer 8, the heat insulation and heat preservation performance of the device can be further improved.

[0024] A heating base 9 is equipped at the bottom of the inductance heating body 13. The connection between the heating base 9 and the inductance heating body 13 is realized by adhesion or screw fastening. The case base 6 is formed by combining two separate case bases 10. The mounting hole formed at the center of the case base 6 matches the outer shape of the heating base 9. The fitting between the outer side wall of the heating base 9 and the inner side wall of the mounting hole of the case base 6 is a toothed engagement. Such a structural design can increase the contact area between the two, make the connection between the two more stable, facilitate the detachment and attachment, and at the same time can perform the function of preventing the relative rotation between the two. The case base 6 and the bottom of the orifice of the device case 1 are detachably connected. Preferably, the case base 6 and the bottom of the orifice of the device case 1 are connected by screw fastening.

[0025] The heating base 9 and the case base 6 are joined by tongue-and-groove connection. Corresponding to at least two tongues 11 being uniformly distributed along the circumferential direction on the outer side wall of the heating base 9, at least two tongue holes 12 are uniformly distributed along the circumferential direction on the inner side wall of the mounting hole of the case base 6. Each tongue 11 and each tongue hole 12 mesh with each other one by one.

[0026] An electromagnetic shielding layer is coated on the bottom of the case base 6 and the heating base9, effectively suppressing the electromagnetic field generated by the induction coil 3 from penetrating the bottom of the device case 1.

[0027] When in use, the cigarette 2 is inserted from top to bottom into the orifice at the bottom of the device case 1, and the inductance heating element 13 is inserted into the cigarette 2. The two terminal conductive contacts 7 are connected to an external power source, and the induction coil 3 is energized to generate an electromagnetic field. The inductance heating element 13 cuts through the alternating electromagnetic field, generating heat and sufficiently heating the cigarette 2. The electromagnetic shielding coating layer 5 on the side wall and the electromagnetic shielding layer at the bottom can effectively suppress the leakage of the electromagnetic field generated from the induction coil 3 to the outside, and the heat insulation material layer 4 and the vacuum insulation intermediate layer 8 play an effective role in heat insulation performance, improving heating efficiency.

[0028] In this embodiment, the case base 6 of the device case 1 is designed as two separate case base units 10, and the two separate case base units 10 are combined to form a mounting hole. Furthermore, the heating base 9 at the bottom of the inductance heating element 13 and the mounting hole of the case base 6 of the device case 1 are joined by mortise and tenon joints, ensuring stable mounting of the inductance heating element 13 and the device case 1, as well as enabling convenient and quick attachment and detachment between the two, and facilitating future replacement and maintenance of each component.

[0029] The foregoing are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. [Explanation of Symbols]

[0030] 1. Device case 2 cigarettes 3. Induction coil 4. Insulation and heat retention material layer 5. Electromagnetic shielding coating layer 6 Case Base 7. Terminal conductive contacts 8. Vacuum-insulated interlayer 9 Heating base 10 Case base separate 11 mortise 12 mortise holes 13 Inductance heating element

Claims

1. A modular combination device of an induction coil and an inductance heating element, comprising a device case having an orifice inside, the orifice of the device case used for inserting a cigarette, the side wall of the device case provided with an induction coil, a heat insulating material layer, and an electromagnetic shielding coating layer arranged sequentially from the inside out, the heat insulating material layer not in contact with the electromagnetic shielding coating layer, the top of the orifice of the device case being open, the bottom of the orifice of the device case being sealed by a case base, the inductance heating element being placed inside the orifice of the device case, the bottom of the inductance heating element being detachably attached to the case base, the inductance heating element being inserted into the bottom of a cigarette, energizing the induction coil to generate an electromagnetic field, the inductance heating element cutting magnetic field lines in the electromagnetic field to generate heat and heat the cigarette, characterized in that

2. The modular combination device of an induction coil and an inductance heating element according to claim 1, characterized in that a heating base is equipped at the bottom of the inductance heating element, the case base is formed by combining two separate case bases, a mounting hole formed in the center of the case base matches the outer shape of the heating base, the heating base and the case base are joined by a mortise and tenon joint, and the case base and the bottom of the orifice of the device case are detachably connected.

3. The modular combination device of an induction coil and an inductance heating element according to claim 2, characterized in that, in accordance with the fact that at least two tenons are uniformly distributed along the circumferential direction on the outer wall of the heating base, at least two mortise holes are uniformly distributed along the circumferential direction on the inner wall of the mounting hole of the case base, each tenon and each mortise hole interlock one-to-one, and the case base and the bottom of the orifice of the device case are connected by screw fastening.

4. The aforementioned device case has a two-layer case structure, with a vacuum intermediate layer formed between the inner and outer layers of the case, and the induction coil, heat insulating material layer, and electromagnetic shielding coating layer are provided within the vacuum intermediate layer, the induction coil is provided wrapped around the outer wall of the inner layer case, the heat insulating material layer encloses the outer circumference of the induction coil, and the electromagnetic shielding coating layer is provided on the inner wall of the outer layer case, and the vacuum gap between the electromagnetic shielding coating layer and the heat insulating material layer forms a vacuum heat insulating intermediate layer, characterized in that the modularized combination device of an induction coil and an inductance heating element according to claim 1.

5. The modularized combination device of an induction coil and an inductance heating element according to claim 1, characterized in that the device case has a single-layer case structure, the electromagnetic shielding coating layer is provided on the outer wall of the device case, the heat insulating material layer is provided on the inner wall of the device case, and the induction coil is provided inside the heat insulating material layer.

6. The modular combination device of an induction coil and an inductance heating element according to claim 2, characterized in that an electromagnetic shielding layer is applied to the bottom of the case base and the heating base.

7. The modular combination device of an induction coil and an inductance heating element according to claim 2, characterized in that the fitting between the outer wall of the heating base and the inner wall of the mounting hole of the case base is a toothed mesh.

8. The modularized combination device of an induction coil and an inductance heating element according to claim 1, characterized in that end-pole conductive contacts are provided at both ends of the induction coil, and the two end-pole conductive contacts are drawn out from the device case.

Citation Information

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