Tobacco heating device and method for generating aerosol thereof

Abstract

The tobacco heating device includes a smoking set and a tobacco product. The tobacco heating device includes a smoking set and a tobacco product. The tobacco product is placed in the smoking set, and the smoking set controls the smoking set based on the ignition point parameters of the tobacco material to heat the tobacco product. The tobacco product includes a smoke extraction section having a sidewall through-hole. A sealing member is provided between the smoking set and the tobacco product to prevent air from flowing through the tobacco material during use and to ensure that the tobacco material does not burn. The ignition point curve of the tobacco material is obtained, and the heating program of the smoking set is set to closely follow the ignition point curve, thereby ensuring that the tobacco material does not burn and maximally releasing the aromatic components of the tobacco material.

Description

Technical Field

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

Background Art

[0002] New tobacco products are emerging strategic tobacco products, and heated tobacco products are one of the products expected to develop greatly in this field. The operating principle is that the tobacco material absorbs heat by heat transfer from a heat source to create an aerosol. Using air as a carrier, the aerosol generated after the tobacco substrate is heated is delivered to the mouth after certain specific adjustments (cooling, flavoring, filtering, etc.) and consumed by the consumer. The heating program of the heat source has a great impact on the sensory quality of the heated tobacco product, and it is possible to control the release of the main substances in the smoke by acting on the temperature distribution of the tobacco material in the heated cigarette.

[0003] Currently, the heating program generally adopted for common heated cigarettes is a three-stage temperature control curve, showing a temperature change trend of "high - low - high" (Patent Document 1), and the maximum heating temperature of the smoking set is below 400°C. Although it is possible to generate an aerosol by heating the smoking set without combustion, the characteristic substances of the tobacco material are not completely released.

Prior Art Documents

Patent Documents

[0004] [[ID=??]]

Patent Document 1

Summary of the Invention

[0005] In order to overcome the existing drawbacks, the present invention provides a tobacco heating device and a method for generating an aerosol thereof.

[0006] A tobacco heating device and a method for generating an aerosol thereof are provided. The tobacco heating device comprises a smoking set and a tobacco product. The tobacco product can be placed inside the smoking set. The smoking set heats the tobacco product by controlling the smoking set based on the ignition point parameter of the tobacco material.

[0007] Optionally, the smoking set comprises a power module, a control module, and a cigarette housing cavity, the power module communicating with the control module, and the control module communicating with a heating element coaxially located within the cigarette housing cavity.

[0008] The tobacco product comprises a tobacco section and a functional mouthpiece section, with a smoke extraction section positioned between the tobacco section and the functional mouthpiece section. The tobacco section, the functional mouthpiece section, and the smoke extraction section are connected together by an external wrapping material.

[0009] The smoke extraction section is a columnar portion containing a cavity structure, with at least one sidewall through-hole opening on the sidewall of the columnar portion communicating with the cavity structure, and a coaxial through-hole formed on the external winding material at a position corresponding to the sidewall through-hole.

[0010] A sealing member is provided within the cigarette storage cavity, and when a tobacco product is inserted into the cigarette storage cavity, the sealing member seals the tobacco section of the tobacco product, ensuring that external airflow cannot pass through the tobacco section, and the heating element is in close proximity to the tobacco section.

[0011] The heating element is optionally cup-shaped, sheet-shaped, or needle-shaped, with the cup-shaped heating element positioned on the inner wall of the cigarette-holding cavity, and the sheet-shaped or needle-shaped heating element positioned on the central axis of the cigarette-holding cavity.

[0012] This aerosol generation method is The steps include activating the heating element to heat the tobacco section, In the tobacco section Ru Ta The ignition point of the box material Depending on the oxygen concentration The steps include obtaining the fluctuation curve, correspondence, and function by thermogravimetric method or hot stage method, and storing them in the control circuit, The steps include: obtaining a curve of oxygen concentration fluctuations over time (or according to the number of puffs) in the tobacco section through an offline, pre-set detection method, and storing it in a control circuit; The control circuit retrieves oxygen concentration fluctuation data and in the tobacco section Ru Ta The ignition point of the box material Depending on the oxygen concentration The steps include: adjusting the power output to the heating element in real time according to the fluctuation curve, correspondence, and function, thereby ensuring that the temperature of the heating element is close to, and lower than, the fluctuation curve of the ignition point of the tobacco material; Includes.

[0013] Optionally, the smoking set may be further equipped with an oxygen content detection sensor, the control module communicates with the oxygen content detection sensor, and the oxygen content detection sensor communicates with the cigarette containment cavity through a micro air passage (15).

[0014] Optionally, a curve showing the change in oxygen concentration over time (or according to the number of puffs) in the tobacco section can be acquired in real time by an oxygen content detection sensor.

[0015] Preferably, the heating element can be a peripheral heating cup, a central heating sheet, a central heating needle, an electromagnetic heating member, a microwave heating member, or the like.

[0016] The present invention provides a tobacco heating device and an aerosol generation method therefor. First, it is necessary to ensure that the tobacco material does not burn during the use process. Second, the more complete the release of aroma substances from the tobacco material, the better its sensory quality. The release amount of aroma substances is closely related to the heating temperature. By obtaining the variation curve of the ignition point of the tobacco material and setting the heating program of the smoking set so as to closely follow the variation curve, it is possible to ensure that the tobacco material does not burn and at the same time ensure the maximum release of aroma substances from the tobacco material.

[0017] The above aspects and features of the present invention, as well as other aspects and features, will become apparent from the description of the following embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0018] [Figure 1] It is a schematic diagram of a smoking set device. [Figure 2] It is a schematic diagram of a tobacco product device. [Figure 3] It is a schematic diagram of the air flow direction of the heated tobacco product. [Figure 4] It is a schematic diagram of a curve representing the ignition point that varies according to the oxygen concentration. [Figure 5] It is a schematic diagram of a curve representing the oxygen concentration that varies according to the heating time. [Figure 6] It is a schematic diagram of the heating curve of the smoking set.

Modes for Carrying Out the Invention

[0019] The tobacco heating device and the aerosol generation method therefor provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 Figures 1 to 3 show a tobacco heating device and a method for generating aerosols therefrom. The tobacco heating device comprises a smoking set 1 and a tobacco product 2. The tobacco product 2 is placed inside the smoking set 1. The smoking set 1 heats the tobacco product 2 by controlling the smoking set 1 based on the ignition point parameter of the tobacco material.

[0021] The smoking set 1 comprises a power module 11, a control module 12, and a cigarette housing cavity 14. The power module 11 communicates with the control module 12, and the control module 12 communicates with a heating element coaxially located within the cigarette housing cavity 14.

[0022] The tobacco product 2 comprises a tobacco section 21 and a functional mouthpiece section 22, with a smoke extraction section 23 also positioned between the tobacco section 21 and the functional mouthpiece section 22. The tobacco section 21, the functional mouthpiece section 22, and the smoke extraction section 23 are connected together by being wrapped with an external wrapping material.

[0023] The smoke extraction section 23 is a columnar portion including a cavity structure, with at least one sidewall through-hole 24 communicating with the cavity structure opening on the sidewall of the columnar portion, and a coaxial through-hole formed on the external winding material at a position corresponding to the sidewall through-hole 24.

[0024] When the sealing member 141 is placed inside the cigarette storage cavity 14 and the tobacco product 2 is inserted into the cigarette storage cavity 14, the sealing member 141 seals the tobacco section 21 of the tobacco product 2, ensuring that external airflow cannot pass through the tobacco section 21. The heating element is located close to the tobacco section 21.

[0025] The aerosol generation method is: The steps include activating the heating element to heat the tobacco section, In the tobacco section Ru Ta The ignition point of the box material Depending on the oxygen concentrationThe steps include obtaining the fluctuation curve, correspondence, and function by thermogravimetric method or hot stage method, and storing them in the control circuit, The steps include: obtaining a curve of oxygen concentration fluctuations over time (or according to the number of puffs) in the tobacco section through an offline, pre-set detection method, and storing it in a control circuit; The control circuit retrieves oxygen concentration fluctuation data and in the tobacco section Ru Ta The ignition point of the box material Depending on the oxygen concentration The steps include: adjusting the power output to the heating element in real time according to the fluctuation curve, correspondence, and function, thereby ensuring that the temperature of the heating element is close to, and lower than, the fluctuation curve of the ignition point of the tobacco material; Includes.

[0026] Example 2 The smoking set 1 may further include an oxygen content detection sensor 13, the control module 12 communicates with the oxygen content detection sensor 13, and the oxygen content detection sensor 13 communicates with the cigarette containment cavity 14 through a micro air passage 15.

[0027] The curve of changes in oxygen concentration over time (or according to the number of puffs) in the tobacco section can be obtained in real time by the oxygen content detection sensor 13.

[0028] As shown in Figures 4 to 6, under certain conditions of tobacco material, the ignition point of the tobacco material varies in response to changes in oxygen concentration. The heating curve of the smoking set is obtained by correlating the curve of the variation in ignition point in response to oxygen concentration in the tobacco section of the cigarette with the curve of the variation in oxygen concentration over time.

[0029] The heating program (temperature rise program) of the heated tobacco product is set to closely follow the fluctuation curve of the ignition point of the tobacco material, and the y-coordinate of the point corresponding to the x-coordinate of the heating program is slightly lower, preferably 5°C lower, than the y-coordinate of the point corresponding to the same x-coordinate in the fluctuation curve of the ignition point of the tobacco material.

[0030] Table 1 shows a comparison of the release amounts of major substances from smoke, and Table 2 shows a comparison of the remaining major substances in the tobacco section after inhalation.

[0031] [Table 1]

[0032] [Table 2]

[0033] Through CHI aspiration tests, the release amounts of major substances (TPM, glycerin, nicotine, and water) in fuming particulate matter under different heating curves are compared. Particulate matter is collected using a Cambridge filter, TPM is quantified after aspiration is complete, and fuming substances (glycerin, nicotine, and water) in the particulate matter are detected using gas chromatography. Here, methanol is the extraction solvent for glycerin, and isopropanol is the extraction solvent for water and nicotine.

[0034] Tables 1 and 2 show that, in this invention, by obtaining a curve of ignition point variation of the tobacco material and setting the heating program of the smoking set to closely follow the ignition point variation curve, the amount of major substances released from the tobacco section during the execution of the heating program is approximately 20% higher than the amount released from the tobacco section in a traditional "high-low-high" temperature rise and heating program. Major substances are released more sufficiently, and there is almost no residue of major substances in the tobacco section after smoking.

[0035] Finally, it should be noted that the embodiments described above are used solely to illustrate the technical solutions of the present invention and not to limit the technical methods thereof. Since the present invention can be extended to other variations, modifications, applications, and embodiments of applications, it is assumed that all such variations, modifications, applications, and embodiments fall within the spirit and teachings of the present invention.

Claims

1. The system comprises a smoking set (1) and a tobacco product (2), wherein the tobacco product (2) can be placed inside the smoking set (1). The smoking set (1) comprises a power module (11), a control module (12), and a cigarette housing cavity (14), wherein the power module (11) communicates with the control module (12), and the control module (12) communicates with a heating element coaxially arranged within the cigarette housing cavity (14). The tobacco product (2) comprises a tobacco section (21), the tobacco section (21) comprises tobacco material, A tobacco heating device characterized in that the fluctuation relationship of the oxygen concentration at the ignition point of the tobacco material in the tobacco section (21) is stored in the control module (12) of the smoking set (1), the control module (12) is configured to recall the fluctuation relationship of the oxygen concentration at the ignition point of the tobacco material, and adjusts the power output to the heating element in real time, thereby heating the tobacco product (2) by controlling the smoking set (1) based on the ignition point parameter of the tobacco material.

2. The tobacco heating device according to claim 1, wherein the tobacco product (2) further comprises a functional mouthpiece section (22), and a smoke extraction section (23) is also disposed between the tobacco section (21) and the functional mouthpiece section (22), and the tobacco section (21), the functional mouthpiece section (22), and the smoke extraction section (23) are connected together by being wrapped with an external wrapping material.

3. The tobacco heating device according to claim 2, wherein the smoke extraction section (23) is a columnar portion including a hollow structure, at least one side wall through-hole (24) communicating with the hollow structure is opened on the side wall of the columnar portion, and a coaxial through-hole is formed on the external winding material at a position corresponding to the side wall through-hole.

4. The tobacco heating device according to claim 2, characterized in that a sealing member (141) is provided in the cigarette storage cavity (14), and when the tobacco product (2) is inserted into the cigarette storage cavity (14), the sealing member (141) seals the tobacco section (21) of the tobacco product (2), ensuring that external airflow cannot flow through the tobacco section (21), and the heating element is in close proximity to the tobacco section (21).

5. The tobacco heating device according to claim 2, characterized in that the smoking set (1) further comprises an oxygen content detection sensor (13), the control module (12) communicates with the oxygen content detection sensor (13), and the oxygen content detection sensor (13) communicates with the cigarette containment cavity (14) through a micro air passage (15).

6. The tobacco heating device according to claim 1 or 2, characterized in that the heating element is one or more of a cup shape, a sheet shape, or a needle shape, the cup-shaped heating element is arranged on the inner wall of the cigarette storage cavity (14), and the sheet-shaped or needle-shaped heating element is arranged on the central axis of the cigarette storage cavity (14).

7. The tobacco heating device according to claim 6, characterized in that the heating element is a circumferential heating cup, a central heating sheet, a central heating needle, an electromagnetic heating member, or a microwave heating member.

8. A method for generating an aerosol for a tobacco heating device according to any one of claims 2 to 5, The steps include activating the heating element to heat the tobacco section, A step of obtaining a fluctuation curve representing the ignition point of the tobacco material in the tobacco section, which changes according to the oxygen concentration, the correspondence between the ignition point of the tobacco material in the tobacco section, the oxygen concentration, and the heating time, and a function of the ignition point of the tobacco material in the tobacco section, the oxygen concentration, and the heating time, by thermogravimetric analysis or the hot stage method, and storing them in a control circuit, The steps include: acquiring a curve of oxygen concentration fluctuations in the tobacco section over time or according to the number of puffs through an offline, preset detection method, and storing it in the control circuit; The control circuit retrieves oxygen concentration fluctuation data, and adjusts the power output to the heating element in real time according to the fluctuation curve representing the ignition point of the tobacco material in the tobacco section which changes according to the oxygen concentration, the correspondence between the ignition point of the tobacco material in the tobacco section, the oxygen concentration, and the heating time, and the function of the ignition point of the tobacco material in the tobacco section, the oxygen concentration, and the heating time, thereby ensuring that the temperature of the heating element is close to and lower than the fluctuation curve of the ignition point of the tobacco material. A method for generating aerosols, including the method described above.

9. The tobacco heating device is the tobacco heating device described in claim 5, The aerosol generation method according to claim 8, characterized in that the curve of fluctuation of oxygen concentration in the tobacco section over time or according to the number of inhalations can be acquired in real time by the oxygen content detection sensor (13).

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