# US 11,297,880 B2 · Heater, cartridge, atomizer and electronic cigarette having same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,297,880 B2 - Document ID: US11297880B2 - Status: Granted - Kind: B2 - Application number: 16/542,359 - Filed: 2019-08-16 - Published: 2020-02-20 - Granted: 2022-04-12 - Earliest claimed: 2018-08-17 - Assignees: Shenzhen First Union Technology Co., Ltd. - Applicants: Shenzhen First Union Technology Co., Ltd. - Inventors: Qing Zhang; Zhengfa Li; Yunkai Zhang; Baoling Lei; Desheng Huang; Zhongli Xu; Yonghai Li - Web page: https://patentgrep.com/patent/US11297880B2 ## CPC - A24F 40/46: Shape or structure of electric heating means - A24F 40/44: Wicks - H05B 3/44: heating conductor arranged within rods or tubes of insulating material - A24F 40/10: Devices using liquid inhalable precursors - 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 A heater, a cartridge, an atomizer and an electronic cigarette having same are disclosed, the heater includes a porous body, configured for absorbing tobacco liquid; the porous body having an absorbing surface and an atomizing surface opposite with each other; the tobacco liquid permeating from the absorbing surface to the atomizing surface; a heating element, disposed on the atomizing surface and configured to atomize the tobacco liquid stored in the porous body into an aerosol; and part of the porous body that is near the atomizing surface having a less thermal conductivity than part of the porous body that is near the absorbing surface, resulting in a big amount of aerosol while not easy to generate burnt flavor and improving user experience. ## Claims ### Claim 1 A heater applied to an electronic cigarette, comprising: a porous body, configured for absorbing tobacco liquid; the porous body having an absorbing surface and an atomizing surface opposite with each other; the tobacco liquid permeating from the absorbing surface to the atomizing surface; a heating element, disposed on the atomizing surface and configured to atomize the tobacco liquid stored in the porous body into an aerosol; and part of the porous body that is near the atomizing surface comprising a less thermal conductivity than part of the porous body that is near the absorbing surface. ### Claim 2 (depends on 1) The heater according to claim 1, wherein the porous body comprises a first layer that is near the atomizing surface and a second layer that is near the absorbing layer; the thermal conductivity of the first layer is less than that of the second layer. ### Claim 3 (depends on 2) The heater according to claim 2, wherein a material of the first layer comprises at least one of silicon oxides, silicon nitrides, diatomite and silicates; a material of the second layer comprises at least one of aluminum oxides, silicon carbides, aluminum nitrides, beryllium oxides and boron nitrides. ### Claim 4 (depends on 2) The heater according to claim 2, wherein a porosity of the first layer is equal to that of the second layer. ### Claim 5 (depends on 2) The heater according to claim 2, wherein a thickness of the first layer is less than that of the second layer. ### Claim 6 (depends on 2) The heater according to claim 2, wherein the heating element is integrated with the first layer and the second layer. ### Claim 7 (depends on 1) The heater according to claim 1, wherein part of the porous body that is near the atomizing surface has a greater porosity than part of the porous body that is near the absorbing surface. ### Claim 8 (depends on 1) The heater according to claim 1, wherein the porous body from near and far from the atomizing surface has a decreasing porosity. ### Claim 9 An atomizer applied to an electronic cigarette, comprising: a shell, with a reservoir formed therein and configured for storing tobacco liquid; and a cartridge received in the shell, comprising: a supporter; and a heater received in the supporter, comprising: a porous body, configured for absorbing tobacco liquid; the porous body having an absorbing surface and an atomizing surface opposite with each other; the tobacco liquid permeating from the absorbing surface to the atomizing surface; a heating element, disposed on the atomizing surface and configured to atomize the tobacco liquid stored in the porous body into an aerosol; and part of the porous body that is near the atomizing surface comprising a less thermal conductivity than part of the porous body that is near the absorbing surface. ### Claim 10 (depends on 9) The atomizer according to claim 9, wherein the porous body comprises a first layer that is near the atomizing surface and a second layer that is near the absorbing layer; the thermal conductivity of the first layer is less than that of the second layer. ### Claim 11 (depends on 10) The atomizer according to claim 10, wherein a material of the first layer comprises at least one of silicon oxides, silicon nitrides, diatomite and silicates; a material of the second layer comprises at least one of aluminum oxides, silicon carbides, aluminum nitrides, beryllium oxides and boron nitrides. ### Claim 12 (depends on 10) The atomizer according to claim 10, wherein a porosity of the first layer is equal to that of the second layer. ### Claim 13 (depends on 10) The atomizer according to claim 10, wherein a thickness of the first layer is less than that of the second layer. ### Claim 14 (depends on 10) The atomizer according to claim 10, wherein the heating element is integrated with the first layer and the second layer. ### Claim 15 (depends on 9) The atomizer according to claim 9, wherein part of the porous body that is near the atomizing surface has a greater porosity than part of the porous body that is near the absorbing surface. ### Claim 16 (depends on 9) The atomizer according to claim 9, wherein the porous body from near and far from the atomizing surface has a decreasing porosity. ### Claim 17 (depends on 9) An electronic cigarette, comprising: an atomizer; and a power supply set, configured for supplying power to the atomizer; wherein when the atomizer is powered the atomizer heats tobacco liquid to generate an aerosol, and the atomizer is in accordance with claim 9.