# US 12,004,567 B2 · Aerosol generating device and aerosol generating system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,567 B2 - Document ID: US12004567B2 - Status: Granted - Kind: B2 - Application number: 17/268,273 - Filed: 2020-12-09 - Published: 2022-12-29 - Granted: 2024-06-11 - Earliest claimed: 2020-02-14 - Assignees: Kt&G Corporation - Applicants: Kt&G Corporation - Inventors: Seung Won Lee; Yong Hwan Kim; Sung Wook Yoon; Dae Nam Han - Web page: https://patentgrep.com/patent/US12004567B2 ## CPC - A24F 40/465: specially adapted for induction heating - H05B 6/108: {for heating a fluid} - A24F 40/51: Arrangement of sensors - A24D 1/20: Cigarettes specially adapted for simulated smoking devices - A24F 40/20: Devices using solid inhalable precursors - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES ## Abstract An aerosol generating device includes: an opening configured to receive a cigarette, an accommodation space configured to accommodate the cigarette inserted through the opening, a coil surrounding the accommodation space and configured to generate an induced magnetic field, a susceptor configured to generate heat due to the induced magnetic field generated from the coil, a heat dissipating structure surrounding the coil and having a double wall structure including a vacuum inner space, a shielding portion configured to block the induced magnetic field generated from the coil and disposed between the coil and the heat dissipating structure, a cigarette recognition sensor configured to detect changes in inductance of the cigarette recognition sensor which is generated by insertion or extraction of the cigarette, and a controller configured to determine whether the cigarette is inserted or extracted, based on the changes in inductance. ## Claims ### Claim 1 An aerosol generating device comprising: an opening configured to receive a cigarette; an accommodation space configured to accommodate the cigarette inserted through the opening; a coil surrounding the accommodation space and configured to generate an induced magnetic field; a susceptor configured to generate heat due to the induced magnetic field generated from the coil; a heat dissipating structure surrounding the coil and having a double wall structure including a vacuum inner space; and a shielding portion configured to block the induced magnetic field generated from the coil and disposed between the coil and the heat dissipating structure, wherein the heat dissipating structure comprises a metal material, and wherein an air gap is formed between the heat dissipating structure and the shielding portion or between the coil and the shielding portion. ### Claim 2 (depends on 1) The aerosol generating device of claim 1, wherein the shielding portion is adjacent to the coil. ### Claim 3 (depends on 1) The aerosol generating device of claim 1, further comprising: a support configured to support the susceptor; and a first support wall connected to the support and forming the accommodation space, wherein the coil surrounds the first support wall. ### Claim 4 (depends on 3) The aerosol generating device of claim 3, further comprising a second support wall apart from and arranged outside the first support wall such that a coil accommodation space is formed between the first support wall and the second support wall, wherein the coil is arranged in the coil accommodation space. ### Claim 5 (depends on 4) The aerosol generating device of claim 4, wherein the shielding portion is adjacent to the second support wall. ### Claim 6 (depends on 1) The aerosol generating device of claim 1, wherein the shielding portion is adjacent to the heat dissipating structure. ### Claim 7 (depends on 1) The aerosol generating device of claim 1, wherein a distance between the coil and the heat dissipating structure is 1 mm to 2 mm. ### Claim 8 (depends on 1) The aerosol generating device of claim 1, wherein the metal material of the heat dissipating structure is a paramagnetic substance. ### Claim 9 (depends on 1) The aerosol generating device of claim 1, further comprising: a cigarette recognition sensor configured to detect changes in inductance which is generated by insertion or extraction of the cigarette; and a controller configured to determine whether the cigarette is inserted or extracted, based on the changes in inductance. ### Claim 10 (depends on 9) The aerosol generating device of claim 9, wherein the cigarette recognition sensor is arranged between the coil and the shielding portion. ### Claim 11 (depends on 9) The aerosol generating device of claim 9, further comprising a battery configured to supply power to the coil, wherein the controller is further configured to control the power supplied to the coil based on insertion or extraction of the cigarette. ### Claim 12 An aerosol generating system comprising: a cigarette comprising an aerosol generating material; and an aerosol generating device configured to accommodate the cigarette and comprising: an opening configured to receive the cigarette; an accommodation space configured to accommodate the cigarette inserted through the opening; a coil surrounding the accommodation space and configured to generate an induced magnetic field; a susceptor configured to generate heat due to the induced magnetic field generated from the coil; a heat dissipating structure surrounding the coil and having a double wall structure including a vacuum inner space; and a shielding portion configured to block the induced magnetic field generated from the coil and disposed between the coil and the heat dissipating structure, wherein the heat dissipating structure comprises a metal material, and wherein an air gap is formed between the heat dissipating structure and the shielding portion or between the coil and the shielding portion. ### Claim 13 (depends on 12) The aerosol generating system of claim 12, wherein the aerosol generating device further comprises: a cigarette recognition sensor arranged between the shielding portion and the coil and configured to detect changes in inductance generated by insertion or extraction of the cigarette; and a controller configured to determine whether the cigarette has been inserted or extracted, based on the changes in inductance. ### Claim 14 (depends on 13) The aerosol generating system of claim 13, wherein the cigarette comprises an electromagnetic inducer configured to change the inductance of the cigarette recognition sensor.