# US 12,757,939 B2 · Aerosol generation apparatus and susceptor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,757,939 B2 - Document ID: US12757939B2 - Status: Granted - Kind: B2 - Application number: 17/918,126 - Filed: 2021-04-12 - Published: 2023-05-04 - Granted: 2026-10-13 - Earliest claimed: 2020-04-11 - Assignees: Shenzhen First Union Technology Co., Ltd. - Applicants: Shenzhen First Union Technology Co., Ltd. - Inventors: Junhui Li; Zhongli Xu; Yonghai Li - Web page: https://patentgrep.com/patent/US12757939B2 ## CPC - A24F 40/465: specially adapted for induction heating - H05B 6/105: {using a susceptor} - 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 ## Abstract An aerosol generation apparatus and a susceptor are provided. The aerosol generation apparatus includes a cavity for receiving a smokable material, and the susceptor at least partially extending along the axial direction of the cavity, when the smokable material is received within the cavity in use, the susceptor is inserted into the smokable material for heating; the susceptor includes an avoidance portion and a heating portion sequentially provided along the direction close to a proximal end; the size of at least a part of the avoidance portion along the cross-sectional direction of the cavity is less than that of the heating portion, such that a certain gap is retained between the susceptor and the smokable material, when the susceptor is inserted into the smokable material. ## Claims ### Claim 1 An aerosol generation apparatus, for heating a smokable material to generate an aerosol, comprising: a cavity, configured to receive the smokable material, and having a proximal end and a distal end opposite to each other along an axial direction of the cavity; a magnetic field generator, configured to generate a varying magnetic field; and a susceptor, configured to be penetrated by the varying magnetic field to generate heat, and configured to at least partially extend from the distal end to the proximal end along the axial direction of the cavity, and then inserted into the smokable material for heating when the smokable material is received within the cavity from the proximal end in use; wherein the susceptor comprises an avoidance portion and a heating portion sequentially provided along the axial direction toward the proximal end; and a size of at least a part of the avoidance portion along a cross-sectional direction of the cavity is less than a size of the heating portion along the cross-sectional direction of the cavity, such that a gap is kept between the avoidance portion and the smokable material when the susceptor is inserted into the smokable material, wherein the magnetic field generator surrounds the avoidance portion of the susceptor. ### Claim 2 (depends on 1) The aerosol generation apparatus according to claim 1, wherein an extension length of the avoidance portion along the axial direction is 1-5 mm. ### Claim 3 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the size of the heating portion along the cross-sectional direction of the cavity is constant. ### Claim 4 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the size of the avoidance portion along the cross-sectional direction of the cavity is constant. ### Claim 5 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the size of the avoidance portion along the cross-sectional direction of the cavity gradually increases along the axial direction toward the heating portion. ### Claim 6 (depends on 2) The aerosol generation apparatus according to claim 2, wherein an accommodating cavity extending along the axial direction is provided within the susceptor, and a temperature sensor for sensing a temperature of the susceptor is accommodated or packaged within the accommodating cavity. ### Claim 7 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the susceptor further comprises a base portion, and the heating portion and the avoidance portion are retained within the cavity by means of the base portion. ### Claim 8 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the avoidance portion and the heating portion are configured to be in a sheet shape extending along the axial direction of the cavity, and a size of the avoidance portion along a width direction of the susceptor is less than a size of the heating portion along the width direction, such that the gap is formed between the avoidance portion and the smokable material along the width direction of the susceptor when at least a part of the susceptor is inserted into the smokable material. ### Claim 9 (depends on 2) The aerosol generation apparatus according to claim 2, wherein the avoidance portion at the distal end of the cavity is flush with a surface of the distal end of the cavity. ### Claim 10 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the size of at least a part of the avoidance portion along the cross-sectional direction of the cavity is 1-3 mm less than the size of the heating portion along the cross-sectional direction of the cavity. ### Claim 11 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the size of the heating portion along the cross-sectional direction of the cavity is constant. ### Claim 12 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the size of the avoidance portion along the cross-sectional direction of the cavity is constant. ### Claim 13 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the size of the avoidance portion along the cross-sectional direction of the cavity gradually increases along the axial direction toward the heating portion. ### Claim 14 (depends on 1) The aerosol generation apparatus according to claim 1, wherein an accommodating cavity extending along the axial direction is provided within the susceptor, and a temperature sensor for sensing a temperature of the susceptor is accommodated or packaged within the accommodating cavity. ### Claim 15 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the susceptor further comprises a base portion, and the heating portion and the avoidance portion are retained within the cavity by means of the base portion. ### Claim 16 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the avoidance portion and the heating portion are configured to be in a sheet shape extending along the axial direction of the cavity, and a size of the avoidance portion along a width direction of the susceptor is less than a size of the heating portion along the width direction, such that the gap is formed between the avoidance portion and the smokable material along the width direction of the susceptor when at least a part of the susceptor is inserted into the smokable material. ### Claim 17 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the avoidance portion at the distal end of the cavity is flush with a surface of the distal end of the cavity. ### Claim 18 (depends on 1) The aerosol generation apparatus according to claim 1, wherein the susceptor further comprises a first base portion, and a second base portion having an outer diameter greater than an outer diameter of the first base portion, and greater than an outer diameter of the heating portion, the first base portion is configured to fix the susceptor within the cavity. ### Claim 19 (depends on 18) The aerosol generation apparatus according to claim 18, wherein the first and second base portions are integrally formed and configured to be an integrally separated part from the heating portion and the avoidance portion, and at least a part of the avoidance portion having a length less than a whole length of the avoidance portion is inserted within the first base portion so that the first and second base portions, the avoidance portion and the heating portion are assembled together as the susceptor.