# US 12,213,523 B2 · Electronic cigarette atomizer and electronic cigarette comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,213,523 B2 - Document ID: US12213523B2 - Status: Granted - Kind: B2 - Application number: 17/298,136 - Filed: 2019-11-06 - Published: 2021-11-11 - Granted: 2025-02-04 - Earliest claimed: 2018-11-29 - Assignees: Shenzhen First Union Technology Co., Ltd. - Applicants: Shenzhen First Union Technology Co., Ltd. - Inventors: Qigen Wang; Desheng Huang; Zhengfa Li; Yonghai Li; Zhongli Xu - Web page: https://patentgrep.com/patent/US12213523B2 ## CPC - A24F 40/44: Wicks - A24F 40/10: Devices using liquid inhalable precursors - A24F 40/42: Cartridges or containers for inhalable precursors - A24F 40/46: Shape or structure of electric heating means - H05B 3/06: Heater elements structurally combined with coupling elements or holders - 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 atomizer, comprising an electronic cigarette liquid storage chamber for storing electronic cigarette liquid, and an atomization assembly for absorbing and atomizing the electronic cigarette liquid. The atomization assembly comprises a porous body and a heating element. The porous body comprises an electronic cigarette liquid absorption surface in contact with the electronic cigarette liquid and an atomization surface. The heating element is provided on the atomization surface. The electronic cigarette liquid absorption surface is provided with a plurality of blind holes and/or grooves extending along the electronic cigarette liquid absorption surface towards the atomization surface. In the atomization assembly, electronic cigarette liquid atomization is performed on the porous body formed with the blind holes and/or grooves. ## Claims ### Claim 1 An electronic cigarette atomizer, comprising an electronic cigarette liquid storage chamber for storing electronic cigarette liquid, and an atomization assembly for absorbing the electronic cigarette liquid from the electronic cigarette liquid storage chamber and atomizing the electronic cigarette liquid, wherein the atomization assembly comprises a porous body for conducting the electronic cigarette liquid, and a heating element for atomizing the electronic cigarette liquid; the porous body comprises an electronic cigarette liquid absorption surface in contact with the electronic cigarette liquid and the porous body further comprises an atomization surface; the heating element is provided on the atomization surface; wherein the electronic cigarette liquid absorption surface is provided with a plurality of blind holes and/or grooves extending along the electronic cigarette liquid absorption surface towards the atomization surface; wherein the heating element comprises a heat generation unit for generating heat, and an electrode connection unit provided on the heat generation unit; wherein the electronic cigarette liquid absorption surface includes a first electronic cigarette liquid absorption region opposite to the heat generation unit, and a second electronic cigarette liquid absorption region opposite to the electrode connection unit; and density of the blind holes in the first electronic cigarette liquid absorption region is greater than density of the blind holes in the second electronic cigarette liquid absorption region; and or, density of the grooves in the first electronic cigarette liquid absorption region is greater than density of the grooves in the second electronic cigarette liquid absorption region. ### Claim 2 (depends on 1) The electronic cigarette atomizer according to claim 1, wherein an aperture of each blind hole is 50 to 500 μm; and/or, a width of each groove is 50 to 500 μm. ### Claim 3 (depends on 1) The electronic cigarette atomizer according to claim 1, wherein a depth of each blind hole and/or groove is less than 0.8 times of a distance from the electronic cigarette liquid absorption surface to the atomization surface. ### Claim 4 (depends on 1) The electronic cigarette atomizer according to claim 1, wherein the blind holes and/or the grooves are uniformly arranged in the electronic cigarette liquid absorption surface. ### Claim 5 (depends on 1) The electronic cigarette atomizer according to claim 1, wherein size of sectional area of a blind hole gradually decreases along an extending direction of the blind hole; and/or, size of sectional area of a groove gradually decreases along an extending direction of the groove. ### Claim 6 (depends on 4) The electronic cigarette atomizer according to claim 4, wherein a hole pitch between adjacent blind holes in the electronic cigarette liquid absorption surface is 0.1 to 1 mm. ### Claim 7 (depends on 1) The electronic cigarette atomizer according to claim 1, wherein a pore aperture of the porous body is 0.1 to 200 μm, with a porosity of 0 to 80%. ### Claim 8 (depends on 1) An electronic cigarette, comprising an atomization device for atomizing electronic cigarette liquid to generate aerosol, and a power supply device for supplying power to the atomizer, wherein the atomization device uses the electronic cigarette atomizer according to claim 1. ### Claim 9 (depends on 2) The electronic cigarette atomizer according to claim 2, wherein a depth of each blind hole and/or groove is less than 0.8 times of a distance from the electronic cigarette liquid absorption surface to the atomization surface. ### Claim 10 (depends on 2) The electronic cigarette atomizer according to claim 2, wherein the heating element comprises a heat generation unit for generating heat, and an electrode connection unit provided on the heat generation unit; wherein the electronic cigarette liquid absorption surface includes a first electronic cigarette liquid absorption region opposite to the heat generation unit, and a second electronic cigarette liquid absorption region opposite to the electrode connection unit; density of the blind holes in the first electronic cigarette liquid absorption region is greater than density of the blind holes in the second electronic cigarette liquid absorption region; and/or, density of the grooves in the first electronic cigarette liquid absorption region is greater than density of the grooves in the second electronic cigarette liquid absorption region. ### Claim 11 (depends on 2) The electronic cigarette atomizer according to claim 2, wherein the blind holes and/or the grooves are uniformly arranged in the electronic cigarette liquid absorption surface. ### Claim 12 (depends on 2) The electronic cigarette atomizer according to claim 2, wherein size of sectional area of a blind hole gradually decreases along an extending direction of the blind hole; and/or, size of sectional area of a groove gradually decreases along an extending direction of the groove. ### Claim 13 (depends on 11) The electronic cigarette atomizer according to claim 11, wherein a hole pitch between adjacent blind holes in the electronic cigarette liquid absorption surface is 0.1 to 1 mm. ### Claim 14 (depends on 2) The electronic cigarette atomizer according to claim 2, wherein a pore aperture of the porous body is 0.1 to 200 μm, with a porosity of 0 to 80%. ### Claim 15 (depends on 8) The electronic cigarette according to claim 8, wherein an aperture of each blind hole is 50 to 500 μm; and/or, a width of each groove is 50 to 500 μm. ### Claim 16 (depends on 8) The electronic cigarette according to claim 8, wherein a depth of each blind hole and/or groove is less than 0.8 times of a distance from the electronic cigarette liquid absorption surface to the atomization surface. ### Claim 17 (depends on 8) The electronic cigarette according to claim 8, wherein the heating element comprises a heat generation unit for generating heat, and an electrode connection unit provided on the heat generation unit; wherein the electronic cigarette liquid absorption surface includes a first electronic cigarette liquid absorption region opposite to the heat generation unit, and a second electronic cigarette liquid absorption region opposite to the electrode connection unit; and density of the blind holes in the first electronic cigarette liquid absorption region is greater than density of the blind holes in the second electronic cigarette liquid absorption region; and/or, density of the grooves in the first electronic cigarette liquid absorption region is greater than density of the grooves in the second electronic cigarette liquid absorption region. ### Claim 18 (depends on 8) The electronic cigarette according to claim 8, wherein the blind holes and/or the grooves are uniformly arranged in the electronic cigarette liquid absorption surface. ### Claim 19 (depends on 8) The electronic cigarette according to claim 8, wherein size of sectional area of a blind hole gradually decreases along an extending direction of the blind hole; and/or, size of sectional area of a groove gradually decreases along an extending direction of the groove.