# US 2023/0055048 A1 · Aerosol-generating device and infrared emitter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0055048 A1 - Document ID: US20230055048A1 - Status: Published application - Kind: A1 - Application number: 17/793,339 - Filed: 2021-01-15 - Published: 2023-02-23 - Earliest claimed: 2020-01-15 - Assignees: Shenzhen First Union Technology Co., Ltd. - Applicants: Shenzhen First Union Technology Co., Ltd. - Inventors: LINHAI LU; RUILONG HU; DONGJUN YAN; WENJUAN LI; JIAN WU; ZUQIANG QI; BAOLING LEI; ZHONGLI XU; YONGHAI LI - Web page: https://patentgrep.com/patent/US20230055048A1 ## CPC - A24F 40/46: Shape or structure of electric heating means - A24F 40/20: Devices using solid inhalable precursors - H05B 3/04: Waterproof or air-tight seals for heaters - H05B 3/141: {Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds} - H05B 3/283: {the insulating material being an inorganic material, e.g. ceramic} - H05B 3/44: heating conductor arranged within rods or tubes of insulating material - H05B 3/46: heating conductor mounted on insulating base - A24F 40/50: Control or monitoring - A24F 40/57: Temperature control - H05B 2203/013: Heaters using resistive films or coatings - H05B 2203/017: Manufacturing methods or apparatus for heaters - H05B 2203/032: Heaters specially adapted for heating by radiation heating - 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-generating device comprises an infrared emitter and an electric core for supplying power to the infrared emitter; the infrared emitter comprises at least one first infrared emission region and at least one second infrared emission region arranged in sequence along the circumferential direction of the chamber; the first infrared emission region and the second infrared emission region are independently activatable to independently radiate infrared rays into the chamber to heat different portions of the smokable material. In the above aerosol-generating device, the regions of the smokable material receiving chamber which are different along the circumferential direction correspond to the first infrared emission region and the second infrared emission region, respectively, and can be independently heated by the first infrared emission region and the second infrared emission region, respectively, in use, so that the smokable material can be gradually heated from part to whole in use. ## Claims ### Claim 1 An aerosol-generating device for heating a smokable material to generate an aerosol for inhalation, comprising: a chamber for receiving a smokable material; an infrared emitter configured to radiate infrared rays toward the chamber to heat the smokable material; the infrared emitter comprises at least one first infrared emission region and at least one second infrared emission region arranged in sequence along the circumferential direction of the chamber; the first infrared emission region and the second infrared emission region are configured to be independently activatable so as to independently radiate infrared rays to heat different portions of the smokable material. ### Claim 2 (depends on 1) The aerosol-generating device of claim 1, wherein the first infrared emission region and the second infrared emission region are separate from each other. ### Claim 3 (depends on 1) The aerosol-generating device of claim 1 , wherein the infrared emitter comprises: a substrate configured to surround a periphery of the chamber; a first infrared emission layer and a second infrared emission layer successively bonded to the substrate surface along a circumferential direction of the chamber; and at least a portion of the first infrared emission layer forms the first infrared emission region and at least a portion of the second infrared emission layer forms the second infrared emission region. ### Claim 4 (depends on 3) The aerosol-generating device of claim 3, wherein the substrate comprises an inner surface and an outer surface; the first infrared emission layer and the second infrared emission layer are both located on an inner surface of the substrate or are both located on an outer surface of the substrate. ### Claim 5 (depends on 3) The aerosol-generating device of claim 3, wherein the first infrared emission layer is a coating formed on the substrate or a film bonded to the substrate; and/or the second infrared emission layer is a coating formed on the substrate or a thin film bonded to the substrate. ### Claim 6 (depends on 3) The aerosol-generating device of claim 3, wherein the substrate is tubular extending in an axial direction of the chamber and surrounding the chamber; the first infrared emission layer is a film wound on an outer surface of the substrate; and/or the second infrared emission layer is a film wound around the outer surface of the substrate. ### Claim 7 (depends on 1) The aerosol-generating device of claim 1, wherein the first infrared emission layer and the second infrared emission layer do not completely cover the substrate surface, and a blank region between the first infrared emission layer and the second infrared emission layer in the circumferential direction of the chamber is formed on the substrate surface. ### Claim 8 (depends on 3) The aerosol-generating device of claim 3, wherein the infrared emitter further comprises a conductive element for powering the first and second infrared emission layers. ### Claim 9 (depends on 8) The aerosol-generating device of claim 8, wherein the conductive element is a conductive coating formed on the substrate. ### Claim 10 (depends on 9) The aerosol-generating device of claim 9, wherein the conductive coating at least partially overlaps the first and second infrared emission layers, thereby forming a conductive connection with the first and second infrared emission layers. ### Claim 11 (depends on 8) The aerosol-generating device of claim 8, wherein the conductive element is configured to extend in an axial direction of the chamber. ### Claim 12 (depends on 11) The aerosol-generating device of claim 11, wherein the conductive element comprises a first conductive element, a second conductive element, and a third conductive element spaced along a circumferential direction of the chamber; the first infrared emission layer is coupled between the first conductive element and the second conductive element to radiate infrared rays toward the chamber when the first conductive element and the second conductive element are energized; and the second infrared emission layer is coupled between the second and third conductive elements to radiate infrared rays toward the chamber when the second and third conductive elements are energized. ### Claim 13 (depends on 8) The aerosol-generating device of claim 8, wherein the conductive element is configured to extend in a circumferential direction of the chamber. ### Claim 14 (depends on 13) The aerosol-generating device of claim 13, wherein the conductive element comprises a first conductive element and a second conductive element, and a third conductive element and a fourth conductive element opposite in an axial direction of the chamber; the first infrared emission layer is coupled between a first conductive element and a second conductive element in an axial direction of the chamber to radiate infrared rays toward the chamber when the first conductive element and the second conductive element are energized; the second infrared emission layer is coupled between the third conductive element and the fourth conductive element in an axial direction of the chamber to radiate infrared rays toward the chamber when the third conductive element and the fourth conductive element are energized. ### Claim 15 (depends on 8) The aerosol-generating device of claim 8, wherein the substrate comprises a first end and a second end opposite in an axial direction of the chamber; wherein the conductive element is configured to extend in a circumferential direction of the chamber; the conductive element comprises a first conductive element disposed at the first end, a second conductive element and a third conductive element disposed at the second end; the first conductive element includes a first portion opposite the second conductive element in an axial direction of the chamber, and a second portion opposite the third conductive element; the first infrared emission layer is coupled between the first portion and the second conductive element in an axial direction of the chamber to radiate infrared rays toward the chamber when the first portion and the second conductive element are energized; and the second infrared emission layer is coupled between the second portion and the third conductive element in an axial direction of the chamber to radiate infrared rays toward the chamber when the second portion and the third conductive element are energized. ### Claim 16 (depends on 1) The aerosol-generating device of claim 1, wherein the infrared emitter comprises: a substrate configured to surround a periphery of the chamber; and an infrared emission film provided on the substrate surface, wherein a first conductive coating, a second conductive coating and a third conductive coating extending along the axial direction of the chamber are formed on the infrared emission film; the first conductive coating, the second conductive coating and the third conductive coating are successively arranged along the circumferential direction of the chamber, so as to divide the infrared emission film into the first infrared emission region located between the first conductive coating and the second conductive coating and the second infrared emission region located between the second conductive coating and the third conductive coating. ### Claim 17 (depends on 1) The aerosol-generating device of claim 1 , wherein the infrared emitter comprises at least: a first substrate and a second substrate disposed about the chamber; the first substrate is provided with a first infrared emission layer, and the second substrate is provided with a second infrared emission layer; and at least a portion of the first infrared emission layer forms the first infrared emission region and at least a portion of the second infrared emission layer forms the second infrared emission region. ### Claim 18 (depends on 17) The aerosol-generating device of claim 17, wherein the first substrate and/or the second substrate are configured in an arc that curves in a direction away from the chamber; and/or the first substrate and/or the second substrate are configured as a sheet. ### Claim 19 (depends on 1) The aerosol-generating device of claim 1, wherein the infrared emitter further comprises a third infrared emission region and a fourth infrared emission region; the first infrared emission region and the third infrared emission region are oppositely arranged along a radial direction of the chamber; and the second infrared emission region and the fourth infrared emission region are oppositely disposed in a radial direction of the chamber. ### Claim at position 20 20-23. (canceled) ### Claim 24 An infrared emitter for an aerosol-generating device, wherein the infrared emitter is formed into a tubular shape extending in a length direction and comprises a first infrared emission region and a second infrared emission region arranged in succession in a circumferential direction; the first infrared emission region and the second infrared emission region are independently activatable to independently radiate infrared rays to heat different portions of the smokable material.