A heated tobacco device and aerosol generating method thereof

Abstract

A heated tobacco device and an aerosol generation method thereof, wherein the heated tobacco device comprises a smoking device (1) and a tobacco product (2), characterized in that the tobacco product (2) can be placed in the smoking device (1), and the smoking device (1) controls the smoking device (1) to heat the tobacco product (2) based on the ignition point parameter of the tobacco material. The tobacco product comprises a smoke extraction section with a side wall through hole, and a sealing component is provided between the smoking device (1) and the tobacco product (2) to ensure that air does not flow through the tobacco material during use. Under the premise of ensuring that the tobacco material does not burn, the more complete the release of the tobacco material's original flavor components, the better its sensory quality, and the release amount of the tobacco material's original flavor components is closely related to the heating temperature. The present invention obtains the ignition point change curve of the tobacco material and sets the heating program of the smoking device closely according to the curve, thereby ensuring that the tobacco material does not burn and the original flavor components of the tobacco material are released to the greatest extent.

Description

Technical Field

[0001] The present invention relates to the field of tobacco products, in particular to a tobacco heating device and an aerosol generating method thereof. Background Art

[0002] The working principle of new tobacco products is that the tobacco material absorbs heat from a heat source through heat transfer to produce an aerosol. Using air as a carrier, the aerosol produced by the heated tobacco matrix undergoes specific conditioning (such as cooling, flavoring, and filtering) before being delivered to the oral cavity for inhalation. The temperature profile of the heat source significantly influences the sensory quality of heated tobacco products. By affecting the temperature distribution of the heated tobacco material, the release of key smoke components can be controlled.

[0003] The heating program currently used in common heated cigarettes is a three-stage temperature control curve, showing a "high-low-high" temperature change trend (patent number: CN201380037681). The maximum heating temperature of its smoking device is below 400°C. Although it can achieve the goal of heating the cigarette without burning and producing aerosols, the release of characteristic substances in the tobacco material is incomplete. Summary of the Invention

[0004] To overcome the existing defects, the present invention provides a tobacco heating device and an aerosol generating method thereof.

[0005] A tobacco heating device and an aerosol generating method thereof, wherein the tobacco heating device comprises a smoking device and a tobacco product, wherein the tobacco product can be arranged in the smoking device, and the smoking device heats the tobacco product by controlling the smoking device based on the ignition point parameters of the tobacco material.

[0006] Optionally, the smoking device includes a power module, a control module, and a cigarette accommodating chamber, wherein the power module is connected to the control module, and the control module is connected to a heating element coaxially arranged in the cigarette accommodating chamber.

[0007] Among them, the tobacco product includes a tobacco segment and a functional mouthpiece segment, wherein a smoke extraction segment is also arranged between the tobacco segment and the functional mouthpiece segment, and the tobacco segment, the functional mouthpiece segment and the smoke extraction segment are connected together by wrapping an external rolling material.

[0008] Among them, the smoke extraction section is a column containing a cavity structure, and at least one side wall through hole connected to the cavity structure is opened on the side wall of the column, and a coaxial through hole is set on the external winding material at a position corresponding to the side wall through hole.

[0009] A sealing component is provided in the cigarette accommodating cavity. When the tobacco product is inserted into the cigarette accommodating cavity, the sealing component seals the tobacco segment of the tobacco product to ensure that external airflow cannot flow through the tobacco segment; the heating element is close to the tobacco segment.

[0010] Optionally, the heating element is one or more of cup-shaped, sheet-shaped or needle-shaped. The cup-shaped heating element is arranged on the inner wall of the cigarette holding cavity, and the sheet-shaped or needle-shaped heating elements are arranged on the central axis of the cigarette holding cavity.

[0011] The aerosol generation method comprises the following steps:

[0012] activating a heating element to heat the tobacco segment;

[0013] The curve, corresponding relationship or function of the ignition point of the tobacco material in the tobacco segment and the oxygen concentration is obtained by thermogravimetric method or hot stage method and stored in the control circuit;

[0014] A curve of the change of the oxygen concentration of the tobacco segment over time (or the number of puffs) is obtained offline by a preset detection method and stored in the control circuit;

[0015] The control circuit calls the oxygen concentration change data and adjusts the power output to the heating element in real time according to the change curve, corresponding relationship or function of the ignition point of the tobacco material in the tobacco segment with the oxygen concentration to ensure that the temperature of the heating element is close to and lower than the ignition point change curve of the tobacco material.

[0016] Optionally, the smoking device may further include an oxygen content detection sensor, the control module is connected to the oxygen content detection sensor, and the oxygen content detection sensor is connected to the cigarette accommodating chamber through a micro-air path.

[0017] Optionally, a curve of the change of the oxygen concentration of the tobacco segment over time (or number of puffs) can be obtained in real time by an oxygen content detection sensor.

[0018] Preferably, the heating element is a circumferential heating cup, a central heating plate, a central heating needle, an electromagnetic heating component, a microwave heating component, or the like.

[0019] The present invention provides a heated tobacco device and a method for generating aerosols therewith. During use, the heated tobacco material is firstly ensured to prevent combustion of the tobacco material. Secondly, the more complete the release of the tobacco material's intrinsic flavor components, the better the sensory quality. The release of the tobacco material's intrinsic flavor components is closely related to the heating temperature. By obtaining the tobacco material's ignition point variation curve and closely aligning the heating program of the smoking device with this curve, the tobacco material is prevented from burning while simultaneously ensuring the maximum release of the tobacco material's intrinsic flavor components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a smoking device.

[0021] Figure 2 Schematic diagram of a tobacco product device.

[0022] Figure 3 Schematic diagram of the airflow direction of heated tobacco products.

[0023] Figure 4 Schematic diagram of the ignition point curve changing with oxygen concentration.

[0024] Figure 5 Schematic diagram of the oxygen concentration changing with heating time.

[0025] Figure 6 This is a schematic diagram of the heating curve of the smoking device. DETAILED DESCRIPTION

[0026] A tobacco heating device and an aerosol generating method thereof provided by the present invention are described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1-3 Shown is a heated tobacco device and an aerosol generating method thereof. The heated tobacco device includes a smoking device 1 and a tobacco product 2. The tobacco product 2 is arranged in the smoking device 1. The smoking device 1 heats the tobacco product 2 by controlling the smoking device 1 based on the ignition point parameters of the tobacco material.

[0028] The smoking device 1 includes a power module 11 , a control module 12 , and a cigarette receiving chamber 14 , wherein the power module 11 is connected to the control module 12 , and the control module 12 is connected to a heating element coaxially arranged in the cigarette receiving chamber 14 .

[0029] The tobacco product 2 includes a tobacco segment 21 and a functional mouthpiece segment 22, wherein a smoke extraction segment 23 is further arranged between the tobacco segment 21 and the functional mouthpiece segment 22. The tobacco segment 21, the functional mouthpiece segment 22 and the smoke extraction segment 23 are connected together by wrapping an external rolling material.

[0030] The smoke extraction section 23 is a column containing a cavity structure, and at least one side wall through hole 24 communicating with the cavity structure is opened on the side wall of the column, and a coaxial through hole is set on the external winding material at a position corresponding to the side wall through hole.

[0031] A sealing component 141 is provided in the cigarette accommodating cavity 14. When the tobacco product 2 is inserted into the cigarette accommodating cavity 14, the sealing component 141 seals the tobacco segment 21 of the tobacco product 2 to ensure that external airflow cannot flow through the tobacco segment 21; the heating element is close to the tobacco segment 21.

[0032] The aerosol generation method comprises the following steps:

[0033] activating a heating element to heat the tobacco segment;

[0034] The curve, corresponding relationship and function of the ignition point of tobacco material in the tobacco segment and oxygen concentration are obtained by thermogravimetric method or hot stage method and stored in the control circuit;

[0035] The curve of the change of the oxygen concentration of the tobacco segment over time (or the number of puffs) is obtained offline by a preset detection method and stored in the control circuit.

[0036] The control circuit calls the oxygen concentration change data and adjusts the power output to the heating element in real time according to the change curve, corresponding relationship and function of the ignition point of the tobacco material in the tobacco segment with the oxygen concentration to ensure that the temperature of the heating element is close to and lower than the ignition point change curve of the tobacco material.

[0037] Example 2

[0038] The smoking device 1 may further include an oxygen content detection sensor 13 . The control module 12 is connected to the oxygen content detection sensor 13 . The oxygen content detection sensor 13 is connected to the cigarette accommodating chamber 14 via a micro-air path 15 .

[0039] The curve of the change of the oxygen concentration of the tobacco segment over time (or the number of puffs) can be obtained in real time by the oxygen content detection sensor 13.

[0040] Figure 4-6 As shown, under the condition of constant tobacco material state, the ignition point of tobacco material changes with the oxygen concentration. The smoking article temperature rise curve is obtained by correlating the ignition point with oxygen concentration change curve and the tobacco segment oxygen concentration with time change curve.

[0041] The temperature rise program of the heated tobacco product is set closely to the ignition point variation curve of the tobacco material, and the ordinate of the point corresponding to its abscissa is slightly lower than the ordinate of the point corresponding to the same abscissa on the ignition point variation curve of the tobacco material, preferably 5°C lower.

[0042] Table 1 compares the release of key components in smoke, and Table 2 compares the residual amounts of key components in the tobacco section after smoking.

[0043] Heating curve TPM (mg / cig) Glycerol (mg / cig) Nicotine (mg / cig) Water content (mg / cig) Ignition point control 47.98 13.53 2.69 11.63 High Low High 40.25 10.49 2.12 9.30

[0044] Table 1

[0045] Airflow mode Glycerol (mg / cig) Nicotine (mg / cig) NSC ND (Not Detected) ND (Not Detected) HNB 2.80 0.8

[0046] Table 2

[0047] The CHI puffing experiment compared the release of key components (TPM, glycerin, nicotine, and water) in the smoke particulate phase under different heating curves. The particulate phase was collected using a Cambridge filter, and TPM was weighed after the puff. Gas chromatography was used to analyze the smoke components (glycerin, nicotine, and water) in the particulate phase. Methanol was used as the extraction solvent for glycerin, while isopropyl alcohol was used as the extraction solvent for water and nicotine.

[0048] Tables 1 and 2 show that the present invention, by obtaining the ignition point variation curve of the tobacco material and setting the heating program of the smoking device closely according to the curve, releases about 20% more key substances in the tobacco segment than the traditional "high-low-high" heating method. The key substances are released more fully, and almost no key substances in the tobacco segment remain after smoking.

[0049] Finally, it should be noted that the above embodiments are only used to describe the technical solutions of the present invention rather than to limit the technical methods. The present invention can be extended to other modifications, changes, applications and embodiments in application, and therefore it is believed that all such modifications, changes, applications and embodiments are within the spirit and teachings of the present invention.

Claims

1. A method for generating aerosols of a heated tobacco device, the heated tobacco device comprising a smoking device (1) and a tobacco product (2), wherein the tobacco product (2) is placed in the smoking device (1), and the smoking device (1) heats the tobacco product (2) by controlling the smoking device (1) based on an ignition point parameter of a tobacco material, characterized in that: The aerosol generation method includes the following steps: activating a heating element to heat a tobacco segment; obtaining a curve of the ignition point of tobacco material in the tobacco segment versus oxygen concentration using a thermogravimetric method or a hot-plate method, and storing the curve in a control circuit; obtaining an offline curve of the oxygen concentration of the tobacco segment versus time or the number of puffs using a pre-set detection method, and storing the curve in the control circuit; and the control circuit accessing oxygen concentration change data and, based on the curve of the ignition point of tobacco material in the tobacco segment versus oxygen concentration, adjusting the power output to the heating element in real time to ensure that the temperature of the heating element is close to and lower than the curve of the ignition point of the tobacco material.

2. The aerosol generating method of a heated tobacco device according to claim 1, characterized in that: The smoking device (1) comprises a power module (11), a control module (12), and a cigarette accommodating chamber (14), wherein the power module (11) is connected to the control module (12), and the control module (12) is connected to a heating element coaxially arranged in the cigarette accommodating chamber (14).

3. The aerosol generating method of a heated tobacco device according to claim 1, characterized in that: The tobacco product (2) comprises a tobacco segment (21) and a functional mouthpiece segment (22), wherein a smoke extraction segment (23) is further provided between the tobacco segment (21) and the functional mouthpiece segment (22), and the tobacco segment (21), the functional mouthpiece segment (22) and the smoke extraction segment (23) are wrapped and connected together by an external rolling material.

4. The aerosol generating method of a heated tobacco device according to claim 3, characterized in that: The smoke extraction section (23) is a column containing a cavity structure, and at least one side wall through hole (24) communicating with the cavity structure is provided on the side wall of the column, and a coaxial through hole is provided on the external rolling material at a position corresponding to the side wall through hole.

5. The aerosol generating method of a heated tobacco device according to claim 2, characterized in that: A sealing component (141) is provided in the cigarette accommodating cavity (14); when the tobacco product (2) is inserted into the cigarette accommodating cavity (14), the sealing component (141) seals the tobacco segment (21) of the tobacco product (2) to ensure that external airflow cannot flow through the tobacco segment (21); and the heating element is close to the tobacco segment (21).

6. The aerosol generating method of a heated tobacco device according to claim 2, characterized in that: The heating element is one or more of cup-shaped, sheet-shaped or needle-shaped. The cup-shaped heating element is arranged on the inner wall of the cigarette accommodating cavity (14), and the sheet-shaped or needle-shaped heating elements are arranged on the central axis of the cigarette accommodating cavity (14).

7. The aerosol generating method of a heated tobacco device according to claim 1, characterized in that: The smoking device (1) further comprises an oxygen content detection sensor (13), the control module (12) is connected to the oxygen content detection sensor (13), and the oxygen content detection sensor (13) is connected to the cigarette accommodating chamber (14) via a micro-air path (15).

8. The aerosol generating method of a heated tobacco device according to claim 1, characterized in that: The curve of the change of the oxygen concentration of the tobacco segment over time or the number of puffs is obtained in real time through the oxygen content detection sensor (13).

9. The aerosol generating method of a heated tobacco device according to claim 6, characterized in that: The heating element is an electromagnetic heating member or a microwave heating member.

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