Atomizer and aerosol generating device

An atomizer for an aerosol generating device, comprising:

• a liquid storage member having a liquid storage cavity configured for storing an aerosol-forming substrate, wherein the liquid storage member is provided with a smoke outlet and an air inlet hole;
• a sealing seat disposed in the liquid storage member, wherein the sealing seat is provided with an air inlet passage;
• an atomizing assembly disposed in the liquid storage member and configured to atomize the aerosol-forming substrate to form smoke, wherein an atomizing cavity is provided inside the atomizing assembly, the atomizing assembly is provided with a liquid inlet hole that communicates the liquid storage cavity with the atomizing cavity, the atomizing cavity is communicated with the smoke outlet;
• a plugging assembly configured to seal the air inlet passage to block the communication between the atomizing cavity and the air inlet hole before the aerosol generating device is put into use, wherein the plugging assembly is slidable relative to the sealing seat, when the aerosol generating device is put into use, the plugging assembly is caused to be removed away from the air inlet passage such that the air inlet passage communicates the atomizing cavity with the air inlet hole;
• wherein the plugging assembly comprises a sealing member slidably disposed in the air inlet passage and a pulling member configured for pulling the sealing member to remove the sealing member away from the air inlet passage, one end of the pulling member is connected to the sealing member, and the liquid storage member is provided with an opening for the other end of the pulling member to pass through and extend to the outside the liquid storage member, when the aerosol generating device is put into use, an external force is used to pull the pulling member to enable the sealing member to slide in the air inlet passage and finally be removed away from the air inlet passage;
• the liquid storage member comprises a main housing having the liquid storage cavity and a bottom seat installed at a bottom opening of the main housing, the sealing seat is received in main housing and supported on the bottom seat, a vent tube that communicates the atomizing cavity with the smoke outlet is provided in the main housing, the opening and the air inlet hole are provided on the bottom seat;
• a protrusion is provided on the bottom seat corresponding to the position of the air inlet passage, the protrusion is recessed to form a positioning groove for accommodating and positioning the sealing member, the positioning groove is communicated with the opening, the sealing member is directly positioned in the positioning groove after being removed away from the air inlet passage.