A high-frequency heated cigarette smoking device
By setting a dynamically adjustable heating base in the heating chamber and using eddy currents generated by an induction coil for dynamic heating, the uneven heating and overheating problems of electromagnetic heating cigarette devices are solved, thus improving the smoking experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHINA TOBACCO INDUSTRY CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-26
AI Technical Summary
Electromagnetically heated cigarette devices suffer from uneven heating and burnt flavors due to excessively high temperatures, affecting the smoking experience.
The heating base moves up and down axially within the heating chamber via an adjustment component, using eddy currents generated by an induction coil for dynamic heating, compensating for insufficient heat and preventing overheating.
It achieves uniform and stable heating temperature, increases the amount of smoke extracted, and avoids the generation of a burnt smell.
Smart Images
Figure CN224268346U_ABST
Abstract
Description
Technical Field
[0001] This patent belongs to the field of new tobacco technology, specifically relating to a high-frequency heated cigarette device. Background Technology
[0002] High-frequency heating technology has become a focal point in the HNB (Heated Tobacco Products) industry in recent years, with Philip Morris International's IQOS ILUMA receiving the most attention. IQOS ILUMA employs electromagnetic heating technology. The basic principle of electromagnetic induction heating is that a rapidly changing high-frequency, high-voltage current (alternating current) passes through an induction coil, generating a changing alternating magnetic field. This magnetic field cuts through a metal inductor, generating eddy currents. The high-speed movement of charge carriers then generates heat energy to heat the object. Other brands like British American Tobacco's GLO, Japan Tobacco's PLOOM, and Hubei Tobacco's SENSIO also utilize electromagnetic heating technology. Compared to resistance heating, electromagnetic heating offers advantages such as faster heating, higher thermal efficiency, and no need for cleaning, addressing some of the pain points of resistance heating. However, electromagnetic heating still has areas for improvement. For example, the built-in metal induction plate in the cartridge is prone to uneven heating. Also, to mitigate the burnt taste caused by excessively high heating temperatures, a relatively low heating temperature is set, often resulting in insufficient initial smoke and a less satisfying smoking experience. Utility Model Content
[0003] The purpose of this patent is to provide a high-frequency heated cigarette smoker that avoids uneven heating and compensates for the heat generated to improve the smoke quality.
[0004] To solve the above-mentioned technical problems, this patent adopts the following technical solution:
[0005] A high-frequency heated cigarette device for electromagnetic induction heating includes a heating chamber and an induction coil. The heating chamber contains at least a portion of the heated cigarette. An induction plate is installed inside the heated cigarette, which heats the tobacco shreds under the influence of an alternating electromagnetic field generated by the induction coil to produce an aerosol suitable for inhalation. The device also includes a heating base and an adjustment assembly located at the bottom of the heating chamber. The heating base is displaced axially within the heating chamber via the adjustment assembly. When the heating base moves into the induction coil, it generates eddy currents under the influence of the electromagnetic field, transferring heat outwards. This patent achieves dynamic heating by using the heating adjustment assembly of the heating base to move up and down axially within the heating chamber, thus achieving balanced heating during inhalation.
[0006] Furthermore, the induction coil is perpendicular to the heating base and is arranged on the side wall of the heating chamber.
[0007] Furthermore, the heating end of the heating base is close to the bottom of the tobacco section of the heated cigarette, and its diameter is less than or equal to the diameter of the heated cigarette.
[0008] Furthermore, the adjustment assembly includes a threaded adjustment rod and a motor. The threaded adjustment rod is integrally formed with the heating base, and the motor drives the threaded adjustment rod to cause the heating base to move axially within the heating chamber.
[0009] Furthermore, a heating base and an adjustment assembly are arranged sequentially at the bottom of the heating chamber. The adjustment assembly includes an eccentric cam, a connecting rod, and a limiting groove. One end of the connecting rod is connected to the heating base, and the other end of the connecting rod is connected to the eccentric cam through the limiting groove. The heating base is displaced axially in the heating chamber by the eccentric cam.
[0010] Furthermore, the eccentric cam has a small head section and a large arc section, with the eccentric cam's axis close to the large arc section.
[0011] Furthermore, the high-frequency heated cigarette device also includes a high-temperature resistant PEEK component, and the limiting groove is connected to the high-temperature resistant PEEK component.
[0012] Furthermore, the eccentric cam is connected to a motor, which drives the eccentric cam to cause the heating base to move axially within the heating chamber.
[0013] Furthermore, the heating end of the heating base has a circular planar structure.
[0014] Furthermore, the heating end of the heating base has an irregularly shaped structure with protruding edges near the heated cigarette.
[0015] In this patent, the heated cigarette is a smoking product, preferably an electromagnetically heated cigarette, which includes an aerosol forming matrix that generates an aerosol through heating that can be directly inhaled into the user's lungs.
[0016] Optionally, the sensor refers to a material that can convert electromagnetic energy into heat. When located in a fluctuating electromagnetic field, eddy currents induced in the sensor cause it to heat up. When the elongated sensor is positioned in thermal contact with the aerosol-forming matrix, the aerosol-forming matrix is heated by the sensor. In this patent, the sensor is preferably an induction sheet.
[0017] Preferably, the length dimension of the receptor is greater than its width dimension or its thickness dimension, for example, more than twice its width dimension or its thickness dimension. Therefore, the receptor can be described as an elongated receptor. The receptor can be arranged generally longitudinally within the aerosol-forming matrix. This means that the length dimension of the elongated receptor is arranged approximately parallel to the longitudinal direction of the aerosol-forming matrix, for example, within plus or minus 10 degrees of the longitudinal direction of the aerosol-forming matrix. In a preferred embodiment, the elongated receptor can be located at a radial center position within the aerosol-forming matrix and extend along the longitudinal axis of the aerosol-forming matrix.
[0018] Preferably, the receptor has a length of 5 mm to 15 mm, for example, between 6 mm and 12 mm or between 8 mm and 10 mm. Preferably, the elongated receptor has a length substantially the same as the aerosol-forming matrix. Preferably, the receptor may have a width of 1 mm to 5 mm and a thickness of 0.01 mm to 2 mm, for example, 0.5 mm to 2 mm. A preferred embodiment may have a thickness between 10 micrometers and 500 micrometers, more preferably between 10 micrometers and 100 micrometers. If the receptor has a constant cross-section, such as a circular cross-section, then it has a preferred width or diameter of 1 mm to 5 mm.
[0019] Preferably, a suitable sensor may include a ferromagnetic material, such as 410 martensitic stainless steel, iron-nickel soft magnetic alloy, etc.
[0020] Preferably, the aerosol generating device, as a high-frequency heated cigarette device, can generate a fluctuating electromagnetic field between approximately 1MHz and 30MHz, for example, between 2MHz and 10MHz, or for example, between 5MHz and 7MHz, through an induction coil.
[0021] Preferably, the induction coil material should minimize the skin effect and reduce the power consumption of the coil to the greatest extent possible, and is preferably made of insulated wire plated with a metal layer, such as silver-plated copper wire.
[0022] Preferably, the aerosol generating device is a portable or handheld aerosol generating device that can be comfortably held between the fingers of a single hand. The aerosol generating device can be substantially cylindrical in shape. The aerosol generating device can have a length between approximately 70 mm and approximately 120 mm.
[0023] This patent provides a high-frequency heated cigarette device. The heating base achieves uniform heating temperature by adjusting the vertical displacement of the heating chamber. When the heat is insufficient to release enough aerosol, the heating base moves upward into the range of the electromagnetic induction coil to increase the heating heat, thereby achieving uniform heating of the bottom of the heated cigarette to improve the smoke. When the heat is sufficient, the heating base moves downward away from the range of the electromagnetic induction coil to avoid the cigarette being overheated and producing a burnt taste. Attached Figure Description
[0024] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.
[0025] Figure 1 This is a supplementary heating state diagram of the heating base of the high-frequency heated cigarette device in Embodiment 1 of this patent;
[0026] Figure 2 This is a schematic diagram of the normal heating operation of the high-frequency heated cigarette device in Embodiment 1 of this patent;
[0027] Figure 3 This is a schematic diagram of the heating base in Embodiment 1 of this patent;
[0028] Figure 4 This is a schematic diagram showing the positions of the heating chamber and the heating base in Embodiment 1 of this patent;
[0029] Figure 5 This is a schematic diagram of the irregular structure of the heating base in Embodiment 1 of this patent;
[0030] Figure 6 This is a supplementary heating state diagram of the heating base of the high-frequency heated cigarette device in Embodiment 2 of this patent;
[0031] Figure 7 This is a schematic diagram of the normal heating operation of the high-frequency heated cigarette device in Embodiment 2 of this patent;
[0032] Figure 8 This is a schematic diagram of the irregular structure of the heating base in Embodiment 2 of this patent.
[0033] The reference numerals in the attached figures are explained as follows:
[0034] Heated cigarettes: 10
[0035] Filtering section: 11
[0036] Aerosol formation matrix segment: 12
[0037] High-frequency heated cigarette accessories: 20
[0038] Induction coil: 21
[0039] Heating chamber: 22
[0040] Heating base: 23
[0041] Heating base heating end: 231
[0042] Adjustment components: 24
[0043] Threaded adjusting rod: 241
[0044] Eccentric cam: 242
[0045] Small head portion: 2421
[0046] Large arc segment: 2422
[0047] Limiting groove: 243
[0048] Connecting rod: 244
[0049] Control section: 25 Detailed Implementation
[0050] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.
[0051] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0052] Example 1
[0053] like Figure 1-2As shown, this embodiment provides a high-frequency heated cigarette device 20 for electromagnetic induction heating. The high-frequency heated cigarette device 20 includes a heating chamber 22 and an induction coil 21. The heating chamber 22 is used to accommodate at least a portion of the heated cigarette. An induction plate is provided inside the heated cigarette. The induction plate is used to inductively heat the heated cigarette under the influence of the alternating electromagnetic field generated by the induction coil 21 to generate an aerosol that can be inhaled. The high-frequency heated cigarette device 20 also includes a heating base 23 and an adjustment component 24. The heating base 23 and the adjustment component 24 are located at the bottom of the heating chamber 22. The heating base 23 is displaced axially in the heating chamber 22 by the adjustment component 24. The heating base 23 can generate eddy current heating under the action of the induction coil 21, and the heating temperature of the heating chamber 22 is adjusted based on the displacement. Specifically, the heated cigarette is a heated cigarette 10, preferably an electromagnetically heated cigarette. The heated cigarette 10 includes a filter section 11 and an aerosol forming matrix section 12 (i.e., the tobacco section of the heated cigarette). An induction plate is provided inside the aerosol forming matrix section 12. The adjusting component 24 causes vertical displacement of the heating chamber 22 along its axial direction. When the heat generated by the induction heating element is insufficient, the heating base 23, under the action of the adjusting component 24, undergoes upward displacement, such as... Figure 1 As shown, the heating base 23 moves upward into the range of the electromagnetic induction coil 21, where it is subjected to an electromagnetic field to generate eddy currents that transfer heat to the heated cigarette. Dynamic heating is achieved by the heating adjustment component of the heating base moving up and down axially within the heating chamber, thus entering a supplementary heating state to achieve balanced heating during the smoking process. When the induction plate generates sufficient heat, to prevent the heating temperature from becoming too high and producing a burnt smell in the cigarette 10, the heating base 23 moves downward under the action of the adjustment component 24, such as... Figure 2 As shown, the heating base 23 moves downwards to outside the range of the electromagnetic induction coil 21 to restore normal heating operation or even stop heating. Preferably, the adjustment component 24 can be connected to the control unit 25 to be controlled and adjusted to adapt to the heating temperature curve of different types of heated cigarettes.
[0054] Specifically, the induction coil 21 is arranged perpendicular to the heating base 23 on the side wall of the heating chamber 22.
[0055] Specifically, the heating end 231 of the heating base is attached to the heating base 23. The heating end 231 of the heating base is made of ferromagnetic material. The diameter of the heating end 231 of the heating base 23 near the heated cigarette is less than or equal to the diameter of the heated cigarette, so as to avoid the heating temperature being too high and being transferred to the cigarette paper, causing a pasty taste.
[0056] Specifically, the adjustment assembly 24 includes a threaded adjustment rod 241 and a motor. The threaded adjustment rod 241 is integrally formed with the heating base 23. The threaded adjustment rod 241 is connected to the base of the heating chamber 22 via threads. The motor drives the threaded adjustment rod 241 to rotate, causing the heating base 23 to move axially within the heating chamber 22. When heating begins, as... Figure 1 As shown, the heating base 23, driven by a motor, rotates upward via the threaded adjusting rod 241 to press against the bottom of the tobacco shreds in the heated cigarette 10. Under the influence of an electromagnetic field, eddy currents are generated to heat the tobacco shreds. When the internal induction plate of the tobacco shreds is sufficient to support the heating temperature required for the release of a sufficient amount of aerosol, the control unit 25 sends a control signal to cause the motor to rotate the threaded adjusting rod 241, thereby rotating the heating base 23 downward. Figure 2 As shown, the heating base 23 moves away from the heating range of the induction coil 21 and no longer transfers heat to the tobacco.
[0057] Specifically, the high-frequency heated cigarette device 20 also includes a high-temperature resistant PEEK component. This component isolates the heating chamber from the control unit 25 to prevent mutual interference. The PEEK component is covered with aerogel for heat insulation. The control unit 25 includes a power supply module, a drive module, and a control module, used to control the heating and stopping operations of the heated cigarette device.
[0058] Specifically, such as Figure 3-4 As shown, the heating end 231 of the heating base has a circular planar structure inside the heating chamber 22.
[0059] Other, such as Figure 5 As shown, the heating end 231 of the heating base has an irregularly shaped structure with protruding edges near the heated cigarette, which improves its heating efficiency.
[0060] Working principle: The heating end 231 of the heating base 23 can move axially within a certain range. When heating begins, the internal motor of the high-frequency heated cigarette device 20 drives the threaded adjusting rod 241 to rotate (e.g., clockwise), causing the heating end 231 of the heating base to move upward and enter the electromagnetic coil of the heating chamber 22. Eddy currents generated by electromagnetic induction heat the tobacco at the bottom of the heated cigarette 10, compensating for insufficient heat generated by the internal metal induction plate of the heated cigarette 10, resulting in insufficient smoke. When the eddy currents generated by the electromagnetic effect of the internal induction plate of the heated cigarette 10 are sufficient to support the release of smoke from the heated cigarette, the control unit 25 sends a control signal to drive the motor to rotate the threaded adjusting rod 241 in the opposite direction (e.g., counterclockwise), causing the heating end 231 of the heating base to move downward and leave the electromagnetic coil range within the heating chamber. Since it is no longer subject to electromagnetic induction, the magnetic plate no longer generates the aforementioned eddy currents or the eddy currents are reduced to be insufficient to heat the tobacco in the chamber, thereby avoiding overheating and the generation of a burnt taste.
[0061] Example 2
[0062] like Figure 6-7 As shown, this embodiment provides a high-frequency heated cigarette device 20 for electromagnetic induction heating. The high-frequency heated cigarette device 20 includes a heating chamber 22 and an induction coil 21. The heating chamber 22 is used to accommodate at least a portion of the heated cigarette. An induction plate is provided inside the heated cigarette. The induction plate is used to heat the tobacco under the influence of the alternating electromagnetic field generated by the induction coil 21 to generate an aerosol that can be inhaled. The high-frequency heated cigarette device 20 also includes a heating base 23 and an adjustment component 24. The heating base 23 and the adjustment component 24 are located at the bottom of the heating chamber 22. The heating base 23 is displaced axially in the heating chamber 22 by the adjustment component 24. The heating base 23 can generate eddy current heating under the action of the induction coil 21, and the heating temperature of the heating chamber 22 is adjusted based on the displacement. Specifically, the heated cigarette is a heated cigarette 10, preferably an electromagnetically heated cigarette. The heated cigarette 10 includes a filter section 11 and an aerosol forming matrix section 12 (i.e., the tobacco section of the heated cigarette). An induction plate is provided inside the aerosol forming matrix section 12. The adjusting component 24 causes vertical displacement of the heating chamber 22 along its axial direction. When the heat generated by the induction heating element is insufficient, the heating base 23, under the action of the adjusting component 24, undergoes upward displacement, such as... Figure 6 As shown, the heating base 23 moves upward into the range of the electromagnetic induction coil 21, where it is subjected to an electromagnetic field to generate eddy currents that transfer heat to the heated cigarette. Dynamic heating is achieved by the heating adjustment component of the heating base moving up and down axially within the heating chamber, thus entering a supplementary heating state. This improves the heating efficiency and uniformity of the high-frequency heated cigarette device 20, and compensates for the heating heat to enhance the smoke quality. When the induction heating element provides sufficient heat, to prevent the cigarette 10 from overheating and producing a burnt smell, the heating base 23 moves downward under the action of the adjustment component 24, such as... Figure 7 As shown, the heating base 23 moves downwards to outside the range of the electromagnetic induction coil 21 to restore normal heating operation or even stop heating. Preferably, the adjustment component 24 can be connected to the control unit 25 to be controlled and adjusted to adapt to the heating temperature curve of different types of heated cigarettes.
[0063] Specifically, the induction coil 21 is arranged perpendicular to the heating base 23 on the side wall of the heating chamber 22.
[0064] Specifically, the heating end 231 of the heating base is attached to the heating base 23. The heating end 231 of the heating base is made of ferromagnetic material. The diameter of the heating end 231 of the heating base 23 near the heated cigarette is less than or equal to the diameter of the heated cigarette, so as to avoid the heating temperature being too high and being transferred to the cigarette paper, causing a pasty taste.
[0065] Specifically, a heating base 23 and an adjustment assembly 24 are arranged sequentially at the bottom of the heating chamber 22. The adjustment assembly 24 includes an eccentric cam 242, a connecting rod 244, and a limiting groove 243. One end of the connecting rod 244 is connected to the heating base 23, and the other end of the connecting rod 244 is connected to the eccentric cam 242 through the limiting groove 243. The heating base 23 is displaced axially in the heating chamber 22 by the eccentric cam 242.
[0066] Specifically, the eccentric cam 242 has a small head portion 2421 and a large arc portion 2422, with the axis of the eccentric cam 242 close to the large arc portion 2422.
[0067] Specifically, the eccentric cam 242 is connected to a motor, which drives the heating base 23 to move by moving up and down along the axial direction of the driven rod. The motor is connected to the shaft of the cam, and drives the eccentric cam 242 through the limiting groove 243 to cause the heating base 23 to be displaced in the axial direction of the heating chamber 22.
[0068] Specifically, the high-frequency heated cigarette device 20 also includes a high-temperature resistant PEEK component. The limiting groove 243 is connected to the high-temperature resistant PEEK component, isolating the heating chamber from the control unit 25 to prevent mutual interference. The PEEK component is covered with aerogel for heat insulation. The control unit 25 includes a power supply module, a drive module, and a control module, used to control the heating and stopping operations of the heated cigarette device.
[0069] Specifically, the heating end 231 of the heating base has a circular planar structure inside the heating chamber 22.
[0070] Other, such as Figure 8 As shown, the heating end 231 of the heating base has an irregularly shaped structure with protruding edges near the heated cigarette, which improves its heating efficiency.
[0071] Working principle: The heating end 231 of the heating base 23 can move axially within a certain range. When heating begins, the motor inside the high-frequency heated cigarette device 20 drives the eccentric cam 242 to rotate to the small end 2421, which connects with the connecting rod 244. This causes the heating end 231 of the heating base to move upward and enter the electromagnetic coil of the heating chamber 22. Eddy currents are generated by electromagnetic induction, which heats the tobacco at the bottom of the heated cigarette 10, compensating for insufficient heat generated by the built-in metal induction plate of the heated cigarette 10, resulting in insufficient smoke. When the eddy currents generated by the electromagnetic effect of the built-in induction plate of the heated cigarette 10 are sufficient to support the release of smoke from the heated cigarette, the control unit 25 sends a control signal to drive the motor to rotate the eccentric cam 242 to the large arc section 2422, which connects with the connecting rod 244. This causes the heating end 231 of the heating base to move downward and leave the electromagnetic coil range inside the heating chamber. Since it is no longer affected by electromagnetic induction, the magnetic sheet no longer generates the aforementioned eddy currents or the eddy currents are reduced to be insufficient to heat the tobacco in the chamber, thereby avoiding overheating and the generation of a burnt taste.
[0072] The terminology and expressions used herein are for descriptive purposes only and this patent should not be limited to them. The use of these terms and expressions does not imply the exclusion of any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various possible modifications should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.
[0073] Similarly, it should be noted that although this patent has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate this patent, and various equivalent changes or substitutions can be made without departing from the spirit of this patent. Therefore, any changes or modifications to the above embodiments within the essential spirit of this patent will fall within the scope of the claims of this patent.
Claims
1. A high-frequency heating cigarette smoking set for electromagnetic induction heating, the high-frequency heating cigarette smoking set comprising a heating chamber and an induction coil, the heating chamber being configured to accommodate at least a portion of a heating cigarette, the heating cigarette being provided with an induction sheet therein, the induction sheet being configured to heat the heating cigarette under the influence of an alternating electromagnetic field generated by the induction coil to generate an aerosol for smoking, characterized in that, The high-frequency heated cigarette device also includes a heating base and an adjustment component. The heating base and the adjustment component are located at the bottom of the heating chamber. The heating base is displaced axially in the heating chamber by the adjustment component. When the heating base moves into the induction coil, it can generate eddy currents under the action of the electromagnetic field to transfer heat to the outside.
2. The high-frequency heated cigarette smoking device according to claim 1, characterized in that, The induction coil is perpendicular to the heating base and is arranged on the side wall of the heating chamber.
3. The high-frequency heated cigarette smoking device according to claim 2, characterized in that, The heating end of the heating base is close to the bottom of the tobacco section of the heated cigarette, and the diameter of the heating base is less than or equal to the diameter of the heated cigarette.
4. The high-frequency heated cigarette smoking device according to claim 3, characterized in that, The adjustment assembly includes a threaded adjustment rod and a motor. The threaded adjustment rod is integrally formed with the heating base. The motor drives the threaded adjustment rod to cause the heating base to move axially in the heating chamber.
5. The high-frequency heated cigarette smoking device according to claim 3, characterized in that, The heating base and the adjustment assembly are arranged sequentially at the bottom of the heating chamber. The adjustment assembly includes an eccentric cam, a connecting rod, and a limiting groove. One end of the connecting rod is connected to the heating base, and the other end of the connecting rod is connected to the eccentric cam through the limiting groove. The heating base is displaced axially in the heating chamber by the eccentric cam.
6. The high-frequency heated cigarette smoking device according to claim 5, characterized in that, The eccentric cam has a small head portion and a large arc portion, with the axis of the eccentric cam close to the large arc portion.
7. The high-frequency heated cigarette smoking device according to claim 5, characterized in that, The high-frequency heated cigarette device also includes a high-temperature resistant PEEK component, and the limiting groove is connected to the high-temperature resistant PEEK component.
8. The high-frequency heated cigarette smoking device according to claim 5, characterized in that, The eccentric cam is connected to a motor, which drives the eccentric cam to cause the heating base to move axially in the heating chamber.
9. The high-frequency heated cigarette smoking device according to claim 3, characterized in that, The heating end of the heating base has a circular planar structure.
10. The high-frequency heated cigarette smoking device according to claim 3, characterized in that, The heating end of the heating base has an irregularly shaped structure with protruding edges near the heated cigarette.