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EP-4740767-A1 - AEROSOL GENERATION DEVICE

EP4740767A1EP 4740767 A1EP4740767 A1EP 4740767A1EP-4740767-A1

Abstract

An aerosol generation device according to an embodiment may comprise: a body having an inner space into which an aerosol-generating article is inserted from one surface of the body; a susceptor accommodated in the body to heat the aerosol-generating article; an induction coil surrounding the susceptor to generate an alternating magnetic field; and a control unit controlling operations of the aerosol generation device and including at least one processor, wherein the susceptor includes a hollow portion for increasing inductance of the susceptor during heating.

Inventors

  • LEE, JAEMIN
  • PARK, SANG KYU
  • KIM, SANG JOON
  • JUNG, SE HWAN

Assignees

  • KT&G Corporation

Dates

Publication Date
20260513
Application Date
20240611

Claims (12)

  1. An aerosol generating device comprising: a body having an internal space formed into which an aerosol generating article is inserted on one side; a susceptor accommodated in the body and configured to heat the aerosol generating article; an induction coil surrounding the susceptor and configured to generate an alternating magnetic field; and a controller configured to control an operation of the aerosol generating device and comprising at least one processor, wherein the susceptor comprises a hollow portion configured to increase inductance of the susceptor when heated.
  2. The aerosol generating device of claim 1, wherein the susceptor comprises a rod accommodated in the internal space, the rod protrudes toward an opening of the internal space, the hollow portion is formed inside the rod along a longitudinal direction of the rod, and a width of the susceptor perpendicular to the longitudinal direction is increased by heating.
  3. The aerosol generating device of claim 2, wherein the rod has a cylindrical shape.
  4. The aerosol generating device of claim 3, wherein screw threads are formed on a surface of the rod.
  5. The aerosol generating device of claim 4, wherein the screw threads are formed along the longitudinal direction.
  6. The aerosol generating device of claim 2, wherein the rod comprises a ferromagnetic material.
  7. The aerosol generating device of claim 1, wherein the susceptor is comprised in the aerosol generating article.
  8. The aerosol generating device of claim 7, wherein the susceptor comprises a rod formed along a longitudinal direction of the aerosol generating article, the hollow portion is formed inside the rod along the longitudinal direction, and a width of the susceptor perpendicular to the longitudinal direction is increased by heating.
  9. The aerosol generating device of claim 8, wherein screw threads are formed on a surface of the rod along the longitudinal direction.
  10. The aerosol generating device of claim 1, wherein the susceptor is configured to surround at least a portion of an outer side of the internal space and extend along a longitudinal direction of the internal space, the hollow portion is formed inside the susceptor along the longitudinal direction, and an outer diameter of the susceptor is increased by heating.
  11. An aerosol generating device comprising: a body having an internal space formed into which an aerosol generating article is inserted on one side; a susceptor accommodated in the body and configured to heat the aerosol generating article; an induction coil surrounding the susceptor and configured to generate an alternating magnetic field; and a controller configured to control an operation of the aerosol generating device and comprising at least one processor, wherein screw threads are formed on a surface of the susceptor so that inductance is increased when the susceptor is heated.
  12. The aerosol generating device of claim 11, wherein the susceptor comprises a hollow portion configured to increase inductance.

Description

TECHNICAL FIELD The present disclosure relates to an aerosol generating device. BACKGROUND ART Research on non-combusted cigarettes is being carried out. An aerosol generating device generates an aerosol by heating an aerosol generating article. To heat a cigarette using an inductive heating method, an electronic cigarette device may generate an alternating magnetic field using a coil to generate an eddy current in a susceptor adjacent to the cigarette. The temperature of the susceptor may increase due to the eddy current generated in the susceptor. The above description is information the inventor(s) acquired during the course of conceiving the present disclosure, or already possessed at the time, and is not necessarily art publicly known before the present application was filed. DISCLOSURE OF THE INVENTION TECHNICAL GOALS An embodiment is to provide an aerosol generating device that may increase inductance change of a susceptor during induction heating. An embodiment is to provide an aerosol generating device that may increase temperature measurement accuracy of a susceptor during induction heating. The technical goals obtainable from the embodiments are non-limited by the above-mentioned technical goals, and other unmentioned technical goals can be clearly understood from the following description by one of ordinary skill in the art. TECHNICAL SOLUTIONS According to an embodiment, an aerosol generating device includes a body having an internal space formed into which an aerosol generating article is inserted on one side, a susceptor accommodated in the body and configured to heat the aerosol generating article, an induction coil surrounding the susceptor and configured to generate an alternating magnetic field, and a controller configured to control an operation of the aerosol generating device and including at least one processor, wherein the susceptor may include a hollow portion configured to increase inductance of the susceptor when heated. According to an embodiment, an aerosol generating device includes a body having an internal space formed into which an aerosol generating article is inserted on one side, a susceptor accommodated in the body and configured to heat the aerosol generating article, an induction coil surrounding the susceptor and configured to generate an alternating magnetic field, and a controller configured to control an operation of the aerosol generating device and including at least one processor, wherein screw threads may be formed on a surface of the susceptor so that inductance may be increased when the susceptor is heated. EFFECTS OF THE INVENTION According to at least one of the embodiments of the present disclosure, an aerosol generating device that may increase inductance change of a susceptor during induction heating may be provided. According to at least one of the embodiments of the present disclosure, an aerosol generating device that may increase temperature measurement accuracy of a susceptor during induction heating may be provided. The effects of the aerosol generating device according to an embodiment are not limited to the above-mentioned effects, and other unmentioned effects can be clearly understood from the following description by one of ordinary skill in the art. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating an aerosol generating device according to an embodiment.FIG. 2 is a block diagram illustrating an aerosol generating device according to an embodiment.FIGS. 3A and 3B are schematic diagrams illustrating a susceptor of an aerosol generating device, according to an embodiment.FIG. 4 is a diagram illustrating an aerosol generating device according to an embodiment.FIG. 5 is a diagram illustrating an aerosol generating device according to an embodiment.FIG. 6 is a schematic diagram illustrating a susceptor of an aerosol generating device, according to an embodiment.FIG. 7 is a diagram illustrating an eddy current trajectory in a susceptor represented by a frequency of a signal, according to an embodiment.FIG. 8 is a diagram illustrating an aerosol generating device according to an embodiment.FIG. 9 is a diagram illustrating an aerosol generating device according to an embodiment.FIG. 10 is a diagram illustrating an aerosol generating device according to an embodiment. The accompanying drawings illustrate preferred embodiments of the present disclosure and are provided together with the detailed description for better understanding of the technical idea of the present disclosure. Therefore, the present disclosure should not be construed as being limited to the embodiments set forth in the drawings. BEST MODE FOR CARRYING OUT THE INVENTION The terms used in the embodiments are selected from among common terms that are currently widely used, in consideration of their function in the disclosure. However, the terms may become different according to an intention of one of ordinary skill in the art, a precedent, or the advent of new technology. I