# US 12,178,255 B2 · Atomizer for electronic cigarette > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,255 B2 - Document ID: US12178255B2 - Status: Granted - Kind: B2 - Application number: 17/620,096 - Filed: 2020-06-15 - Published: 2022-08-04 - Granted: 2024-12-31 - Earliest claimed: 2019-06-17 - Assignees: China Tobacco Hunan Industrial Co., Ltd. - Applicants: China Tobacco Hunan Industrial Co., Ltd. - Inventors: Jianfu Liu; Kejun Zhong; Xiaoyi Guo; Wei Huang; Xinqiang Yin; Jianhua Yi; Chaoxiang Huang; Yongquan Zhou - Web page: https://patentgrep.com/patent/US12178255B2 ## CPC - A24F 40/485: Valves; Apertures - A24F 40/05: Devices without heating means - A24F 40/10: Devices using liquid inhalable precursors - A24F 40/44: Wicks - B05B 17/0653: {Details} - B05B 17/0684: {Wicks or the like} - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## Abstract An atomizer for an electronic cigarette is provided. The atomizer comprises a liquid cartridge device with a liquid outlet, atomization cotton, and an ultrasonic atomization piece. The middle of the atomization cotton abuts against a central area of the ultrasonic atomization piece by means of a spring to form an atomization zone. An end portion of the atomization cotton is pressed against the bottom of the liquid cartridge device and covers the liquid outlet. An atomization cavity is provided between the ultrasonic atomization piece and the bottom of the liquid cartridge device. An atomization cavity gas inlet and an atomization cavity gas outlet are provided at the top of the atomization cavity. The atomization cavity gas inlet (501) and the liquid outlet (321) are staggered. ## Claims ### Claim 1 An atomizer for an electronic cigarette, comprising a liquid cartridge device with a liquid outlet, atomization cotton, and an ultrasonic atomization piece, wherein: a middle part of the atomization cotton abuts against a central area of the ultrasonic atomization piece by a spring to form an atomization zone, and an end portion of the atomization cotton is pressed against a bottom of the liquid cartridge device and covers the liquid outlet; an atomization cavity is formed between the ultrasonic atomization piece and the bottom of the liquid cartridge device, and a gas inlet of the atomization cavity and a gas outlet of the atomization cavity are disposed at a top of the atomization cavity; characterized in that: the gas inlet of the atomization cavity is misaligned with the liquid outlet, and an angle between the gas inlet of the atomization cavity and the liquid outlet is in a range of 30 to 180 degrees, so that the gas flow direction at the gas inlet of the atomization cavity is misaligned with the flow direction of an e-liquid on the atomization cotton; and a gas flow between the gas inlet of the atomization cavity and the gas outlet of the atomization cavity has a turning. ### Claim 2 (depends on 1) The atomizer for the electronic cigarette according to claim 1, wherein the gas outlet of the atomization cavity is disposed at a central position facing the atomization zone. ### Claim 3 (depends on 1) The atomizer for the electronic cigarette according to claim 1, wherein: the gas outlet of the atomization cavity is connected to a gas outlet channel, and the diameter of the gas outlet of the atomization cavity is greater than that of the gas outlet channel. ### Claim 4 (depends on 1) The atomizer for the electronic cigarette according to claim 1, wherein: the end portion of the atomization cotton is pressed against the bottom of the liquid cartridge device by a mounting seat of the atomization cotton, a groove that is opposite to the liquid outlet and is communicated with the atomization cavity is disposed on the upper surface of the mounting seat of the atomization cotton, the middle of the end portion of the atomization cotton is suspended and covers the groove, and two sides of the end portion of the atomization cotton are pressed against an end face of the liquid outlet of the liquid cartridge device, so that only the position on the atomization cotton corresponding to the groove is an e-liquid guiding zone of the atomization cotton. ### Claim 5 (depends on 4) The atomizer for the electronic cigarette according to claim 4, wherein: the groove comprises a first groove and a second groove communicated with each other, both of the first groove and the second groove are symmetrically disposed on the upper surface of the mounting seat of the atomization cotton, and the gas inlet of the first groove is smaller than the gas inlet of the second groove. ### Claim 6 (depends on 5) The atomizer for the electronic cigarette according to claim 5, wherein the gas outlet of the first groove is greater than the diameter of the liquid outlet. ### Claim 7 (depends on 5) The atomizer for the electronic cigarette according to claim 5, wherein: first fixing grooves are further symmetrically disposed on an upper surface of the mounting seat of the atomization cotton, and two ends of the atomization cotton are respectively inserted into the first fixing grooves and cover the first groove and the second groove. ### Claim 8 (depends on 7) The atomizer for the electronic cigarette according to claim 7, wherein the first fixing grooves, the first groove, and the second groove are sequentially disposed on the upper surface of the mounting seat of the atomization cotton from outside to inside. ### Claim 9 (depends on 1) The atomizer for the electronic cigarette according to claim 1, wherein: the ultrasonic atomization piece is disposed on an atomization seat, a second fixing groove and a limiting ring are disposed on the atomization seat, and the ultrasonic atomization piece is nested in the second fixing groove and limited in the atomization seat through the limiting ring. ### Claim 10 (depends on 1) The atomizer for the electronic cigarette according to claim 1, wherein: an upper surface electrode of the ultrasonic atomization piece is electrically connected to an outer electrode, a lower surface electrode of the ultrasonic atomization piece is electrically connected to an inner electrode, a resistance board is clamped between the outer electrode and the inner electrode, a resistor is disposed on the resistance board, one end of the resistor is electrically connected to the upper surface electrode of the ultrasonic atomization piece via the outer electrode, and the other end of the resistor is electrically connected to the lower surface electrode of the ultrasonic atomization piece via the inner electrode, so that a closed circuit is formed between the ultrasonic atomization piece and the resistor. ### Claim 11 An atomizer for an electronic cigarette, comprising a liquid cartridge device with a liquid outlet, atomization cotton, and an ultrasonic atomization piece, wherein: a middle part of the atomization cotton abuts against a central area of the ultrasonic atomization piece by a spring to form an atomization zone, and an end portion of the atomization cotton is pressed against a bottom of the liquid cartridge device and covers the liquid outlet; an atomization cavity is formed between the ultrasonic atomization piece and a bottom of the liquid cartridge device, and a gas inlet of the atomization cavity and a gas outlet of the atomization cavity are disposed at a top of the atomization cavity; characterized in that: the gas inlet of the atomization cavity is misaligned with the liquid outlet, so that the gas flow direction at the gas inlet of the atomization cavity is misaligned with the flow direction of an e-liquid on the atomization cotton, and a gas flow between the gas inlet of the atomization cavity and the gas outlet of the atomization cavity has a turning; and a gas distribution valve is disposed at the gas outlet of the atomization cavity, at least one groove is disposed on the periphery of the gas distribution valve, and the gas outlet of the atomization cavity is communicated with the atomization cavity through the groove. ### Claim 12 (depends on 11) The atomizer for the electronic cigarette according to claim 11, wherein a smoke blocking groove for preventing smoke from directly spraying out of the atomization cavity is disposed at a bottom of the gas distribution valve. ### Claim 13 (depends on 11) The atomizer for the electronic cigarette according to claim 11, wherein the distance between the smoke blocking groove and the ultrasonic atomization piece is 1 mm to 20 mm.