# US 12,178,248 B2 · Electronic cigarette and heating assembly and heating member thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,248 B2 - Document ID: US12178248B2 - Status: Granted - Kind: B2 - Application number: 16/969,828 - Filed: 2018-02-13 - Published: 2020-11-26 - Granted: 2024-12-31 - Earliest claimed: 2018-02-13 - Assignees: Shenzhen Smoore Technology Limited - Applicants: Shenzhen Smoore Technology Limited - Inventors: Xiaoping Li; Changyong Yi; Zhenlong Jiang - Web page: https://patentgrep.com/patent/US12178248B2 ## CPC - A24F 40/46: Shape or structure of electric heating means - A24F 40/44: Wicks - H05B 1/0227: {Applications} - H05B 3/18: the conductor being embedded in an insulating material - A24F 40/10: Devices using liquid inhalable precursors - H05B 2203/003: using serpentine layout - H05B 2203/016: Heaters using particular connecting means - H05B 2203/021: Heaters specially adapted for heating liquids - 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 electronic cigarette and a heating assembly and a heating member thereof. The heating assembly comprises a porous member for absorbing an e-liquid and at least one heating member for heating and atomizing the e-liquid absorbed by the porous member. The at least one heating member comprises an elongated sheet-shaped heating portion. At least part of the sheet-shaped heating portion is partially embedded in the porous member. The porous member comprises an atomization surface corresponding to the at least part of the sheet-shaped heating portion. The at least part of the sheet-shaped heating portion has a through hole for adjusting resistance distribution. ## Claims ### Claim 1 A heating assembly of an electronic cigarette, the heating assembly comprising: a porous body configured for adsorbing e-liquid; and at least one heating element configured for heating and atomizing the e-liquid adsorbed into the porous body; wherein the at least one heating element comprises an elongated sheet heating portion, at least partial section of the sheet heating portion is at least partially embedded in the porous body, and the porous body comprises an atomizing surface corresponding to the at least partial section; wherein the at least partial section is provided with a through hole configured for adjusting resistance distribution, and wherein the at least partial section comprises a plurality of through holes, and in a length direction of the sheet heating portion, a density of the through holes in the middle is greater than that of the through holes at both end. ### Claim 2 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section comprises a plurality of through holes, and a distribution density of the through holes in a width direction of the sheet heating portion changes gradually or changes stepwise. ### Claim 3 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section is embedded in the porous body in a manner that a movement direction of at least one of the e-liquid and smoke in the porous body follows along a width direction of the at least partial section. ### Claim 4 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section extends in a length direction of the at least partial section along a direction parallel to a plane where the atomizing surface is located. ### Claim 5 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein two opposite surfaces of the at least partial section defined by length and width are in direct contact with the porous body. ### Claim 6 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the porous body comprises a sintered porous body, the at least partial section is integrally formed with the sintered porous body by sintering. ### Claim 7 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section comprises a plurality of flat portions parallel to each other and a plurality of bending portions sequentially connecting the plurality of flat portions in series, the flat portions are arranged at intervals in a direction parallel to a plane where the atomizing surface is located, and the intervals are larger in the middle and smaller at both sides, or smaller in the middle and larger at the both sides. ### Claim 8 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the porous body comprises a first layer adjacent to the atomizing surface and a second layer away from the atomizing surface, a thermal conductivity of the first layer is greater than that of the second layer, wherein the at least partial section is embedded in the first layer. ### Claim 9 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section comprises a plurality of flat portions parallel to each other and a plurality of bending portions sequentially connecting the plurality of flat portions in series, the atomizing surface is provided in a wavy shape, and the plurality of flat portions are disposed corresponding to troughs of the atomizing surface, respectively. ### Claim 10 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein a thermal conductivity of the porous body gradually increases in a direction from an area away from the atomizing surface to an area adjacent to the atomizing surface. ### Claim 11 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least one heating element comprises two electrical connecting portions integrally connected to both ends of the sheet heating portion, respectively; each of the electrical connecting portions comprises a lower portion protruding from a lower edge of the sheet heating portion and an upper portion protruding from an upper edge of the sheet heating portion. ### Claim 12 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein the at least partial section is integrally embedded in the porous body. ### Claim 13 (depends on 1) The heating assembly of the electronic cigarette according to claim 1, wherein a width direction of the at least partial section of the sheet heating portion is substantially perpendicular to a plane where the atomizing surface is located. ### Claim 14 A heating element of an electronic cigarette, the heating element comprising: an elongated sheet heating portion; wherein the elongated sheet heating portion is provided with a through hole configured for adjusting resistance distribution, and wherein the sheet heating portion comprises a plurality of through holes, and in a length direction of the sheet heating portion, a density of the through holes in the middle is greater than that of the through holes at both ends. ### Claim 15 (depends on 14) The heating element of the electronic cigarette according to claim 14, wherein the sheet heating portion comprises a plurality of through holes, and a distribution density of the through holes in a width direction of the sheet heating portion changes gradually or changes stepwise. ### Claim 16 (depends on 1) An electronic cigarette, comprising the heating assembly of the electronic cigarette of claim 1.