CN-122028818-A - Aerosol generating device and method of operating the same

Abstract

An aerosol-generating device according to an embodiment of the invention comprises an oscillating portion for generating microwaves, a resonating portion comprising a receiving space for receiving an aerosol-generating article and resonating the microwaves for heating the aerosol-generating article, a sensor portion for identifying a state of a medium of a tobacco rod comprised in the aerosol-generating article, and a processor for adjusting a frequency of the microwaves according to the identified state of the medium. The processor is configured to control the oscillation section to generate microwaves having a first frequency corresponding to moisture included in the medium in a warm-up section and to generate microwaves having a second frequency corresponding to glycerin included in the medium in a smoking section when the state of the medium is equal to or greater than a preset threshold.

Inventors

• ZHENG ZHENZHE
• JIN ZHENGHAO
• Pu Xiangzhe
• XU ZHANGYUAN
• LI YUANJING
• ZHANG ZHEHAO

Assignees

• 韩国烟草人参公社

Dates

Publication Date

20260512

Application Date

20250825

Priority Date

20240912

Claims (15)

1. 1. An aerosol-generating device, characterized in that, Comprising the following steps: An oscillation section for generating microwaves, A resonance section including a receiving space for receiving an aerosol-generating article, the resonance section resonating the microwaves to heat the aerosol-generating article, A sensor portion for identifying a state of a medium of a tobacco rod included in the aerosol-generating article, and A processor that adjusts the frequency of the microwaves according to the identified state of the medium; the processor is configured to: when the state of the medium is above a preset threshold, In a preheating zone, controlling the oscillating portion to generate microwaves having a first frequency corresponding to moisture included in the medium, In the smoking section, the oscillation unit is controlled to generate microwaves having a second frequency corresponding to glycerin included in the medium.
2. 2. An aerosol-generating device according to claim 1, wherein, The processor is configured to: When the state of the medium is less than the threshold, And controlling the oscillation part to generate microwaves with the second frequency in the preheating interval and the smoking interval.
3. 3. An aerosol-generating device according to claim 1, wherein, The second frequency is lower than the first frequency, the first frequency is 2.15GHz to 2.75GHz, and the second frequency is 615MHz to 1.245GHz.
4. 4. An aerosol-generating device according to claim 1, wherein, When the sensor portion is an ultrasonic sensor, the processor determines that the state of the medium is the threshold or more if the time for which the sound wave emitted to the medium returns is less than or equal to a preset time.
5. 5. An aerosol-generating device according to claim 1, wherein, When the sensor portion is a near infrared sensor, the sensor portion emits light and measures reflected light reflected back through the medium, and when an absorbance of the reflected light at a specific wavelength is a preset magnitude or more, the processor judges that the state of the medium is the threshold or more.
6. 6. An aerosol-generating device according to claim 1, wherein, Further comprises: A power monitoring unit that measures an input microwave output from the oscillation unit and input to the resonance unit, and a reflected microwave reflected from the resonance unit and input to the oscillation unit; the processor is configured to: the kind of the aerosol-generating article is determined based on the reflected microwaves measured by the power monitoring section.
7. 7. An aerosol-generating device according to claim 6, wherein, Comprising the following steps: a memory stores a relationship between a plurality of aerosol-generating articles and the power curve in the form of a look-up table.
8. 8. An aerosol-generating device according to claim 7, wherein, The processor adjusts the magnitude of microwave power output by the oscillating portion according to a power curve corresponding to the determined aerosol-generating article based on the lookup table.
9. 9. An aerosol-generating device according to claim 1, wherein, The tobacco rod includes at least one dielectric selected from the group consisting of an aerosol-generating substance and a flavoring liquid, and the reflected microwaves vary depending on the type and amount of the dielectric.
10. 10. A method of operating an aerosol-generating device comprising an oscillating portion for generating microwaves and a resonating portion comprising a receiving space for receiving an aerosol-generating article and resonating the microwaves for heating the aerosol-generating article, characterized in that, The action method comprises the following steps: A step of identifying whether the aerosol-generating article has been inserted into the receiving space, A step of recognizing a medium state of a tobacco rod included in the aerosol-generating article when insertion of the aerosol-generating article is detected by a sensor portion, and A step of adjusting the frequency of the microwaves according to the identified state of the medium; In the step of adjusting the frequency of the microwaves, When the state of the medium is equal to or higher than a preset threshold, the oscillation section is controlled to generate microwaves having a first frequency corresponding to moisture included in the medium in a warm-up section, and the oscillation section is controlled to generate microwaves having a second frequency corresponding to glycerin included in the medium in a smoking section.
11. 11. A method of operating an aerosol-generating device according to claim 10, wherein, In the step of adjusting the frequency of the microwaves, And controlling the oscillation unit to generate microwaves having the second frequency in the preheating section and the smoking section when the state of the medium is smaller than the threshold value.
12. 12. A method of operating an aerosol-generating device according to claim 10, wherein, The second frequency is lower than the first frequency, the first frequency is 2.15GHz to 2.75GHz, and the second frequency is 615MHz to 1.245GHz.
13. 13. A method of operating an aerosol-generating device according to claim 10, wherein, When the sensor portion is a near infrared sensor, the sensor portion emits light and measures reflected light reflected back through the medium, and when an absorbance of the reflected light at a specific wavelength is a preset magnitude or more, the processor judges that the state of the medium is the threshold or more.
14. 14. A method of operating an aerosol-generating device according to claim 10, wherein, Between the step of identifying the medium state of the tobacco rod and the step of adjusting the microwave frequency, further comprising: a step of generating an input microwave outputted from the oscillation section and inputted to the resonance section, A step of measuring reflected microwaves reflected from the resonance portion and input to the oscillation portion, and A step of determining the kind of the aerosol-generating article based on the measured reflected microwaves.
15. 15. A method of operating an aerosol-generating device according to claim 14, wherein, Comprising the following steps: And adjusting the magnitude of the microwave power output by the oscillating portion according to the determined power curve corresponding to the aerosol-generating article based on a lookup table including power curves corresponding to a plurality of aerosol-generating articles.

Description

Aerosol generating device and method of operating the same Technical Field Embodiments relate to an aerosol-generating device capable of heating an aerosol-generating article by means of dielectric heating to generate an aerosol and a method of operating the same. Background In recent years, there has been an increasing demand for alternative methods to overcome the disadvantages of conventional cigarettes. For example, there is an increasing demand for systems that do not generate aerosols by burning cigarettes, but rather by heating the cigarettes (or "aerosol-generating articles") with an aerosol-generating device. While aerosol-generating devices generally heat an aerosol-generating substance by resistive heating or inductive heating, there has recently been proposed a dielectric heating type aerosol-generating device that heats an aerosol-generating substance by microwaves. An aerosol-generating device employing a dielectric heating system is a device capable of generating heat from a dielectric body included in an aerosol-generating substance by microwave resonance and heating the aerosol-generating substance by the heat generated from the dielectric body. Depending on the media state of the aerosol-generating article inserted into the aerosol-generating device, the power (power) profile to maintain optimal atomization performance may be different. The specific heat capacity of moisture is greater than that of air, while its heat capacity is greater than that of air at the same temperature. Therefore, when a user inhales an aerosol having a high moisture content, there may occur a problem that the user feels hotter than when inhaling air of the same temperature. Disclosure of Invention Problems to be solved by the invention According to an embodiment of the present invention, an aerosol-generating device may be provided that employs an induction heating method capable of applying a temperature profile corresponding to a medium state of an aerosol-generating article. The problems to be solved by the embodiments of the present disclosure are not limited to the above-described problems, and the non-mentioned problems can be clearly understood by those of ordinary skill in the art to which the embodiments belong from the description and the drawings. Means for solving the problems An aerosol-generating device according to an embodiment of the invention comprises an oscillating portion for generating microwaves, a resonating portion comprising a receiving space for receiving an aerosol-generating article and resonating the microwaves for heating the aerosol-generating article, a sensor portion for identifying a medium state of a tobacco rod comprised in the aerosol-generating article, and a processor for adjusting a frequency of the microwaves according to the identified medium state. The processor is configured to control the oscillating portion to generate microwaves having a first frequency corresponding to moisture included in the medium in a warm-up interval and to generate microwaves having a second frequency corresponding to glycerin included in the medium in a smoking interval when a state of the medium is above a preset threshold. A method of operating an aerosol-generating device according to an embodiment of the invention comprises the steps of identifying a medium state of a tobacco rod included in the aerosol-generating article when insertion of the aerosol-generating article is detected, and adjusting the microwave frequency in dependence on the identified medium state. In the step of adjusting the microwave frequency, when the state of the medium is equal to or higher than a preset threshold value, the oscillating portion is controlled to generate microwaves having a first frequency corresponding to moisture included in the medium in a warm-up section, and the oscillating portion is controlled to generate microwaves having a second frequency corresponding to glycerin included in the medium in a smoking section. ADVANTAGEOUS EFFECTS OF INVENTION According to the aerosol-generating device of the embodiment of the invention, the amount of moisture included in the aerosol-generating article medium can be measured with the sensor that can identify the state of the aerosol-generating article medium and a temperature profile corresponding to the amount of moisture included in the medium is provided. Effects of the embodiments are not limited to the above-described effects, and effects not mentioned herein can be clearly understood by those skilled in the art from the present specification and drawings. Drawings Fig. 1 is a block diagram of an aerosol-generating device according to an embodiment. Fig. 2 is a perspective view of an aerosol-generating device according to an embodiment. Fig. 3 is an internal block diagram of the heater assembly of fig. 2. Fig. 4 is a perspective view of a heater assembly according to an embodiment. Fig. 5 is a cross-sectional view of the heater assembly of fig. 4. Fig.