Abstract: Provided herein are a porous wick and a vaporizer and aerosol generation device including the same. The vaporizer according to some embodiments of the present disclosure includes a liquid reservoir configured to store an aerosol-generating substrate in a liquid state, a heating element configured to heat the stored aerosol-generating substrate to generate an aerosol, and a porous wick configured to deliver the stored aerosol-generating substrate to the heating element through a porous body and comprising a coating film formed on at least a part of a plurality of surfaces of the porous body. Since a coating film is formed on a surface not associated with a target transport path for a liquid, the liquid can be intensively transported along the target transport path.

Abstract: An aerosol generating system may include a plurality of susceptors having different resonance frequencies and configured to heat different portions of a cigarette accommodated in an aerosol generating device, a coil configured to heat the plurality of susceptors, a plurality of capacitors connected to the coil, and a processor configured to determine a combination of capacitors through which current applied to the coil is to pass from among the plurality of capacitors, and heat a susceptor corresponding to a resonance frequency according to the combination by applying current to the coil according to the combination.

Abstract: Provided herein are a liquid cartridge with an improved liquid supply ability and an aerosol generation device including the same. The liquid cartridge according to some embodiments of the present disclosure includes a storage portion which is configured to store an aerosol-generating substrate in a liquid state and includes an air hole through which air enters, a wick which is configured to absorb the stored aerosol-generating substrate, and a vaporizing portion which is configured to vaporize the aerosol-generating substrate absorbed through the wick to generate an aerosol. In the liquid cartridge, an inflow of air into the storage portion is facilitated through the air hole so that an internal pressure of the storage portion is prevented from dropping due to a decrease in the amount of the liquid, and positions where bubbles are generated are dispersed so that formation of bubble layers in the vicinity of the wick is also prevented.

Abstract: A vaporizer and an aerosol-generating device including the vaporizer are provided. The vaporizer includes a liquid storage tank configured to store a liquid aerosol-generating material, and a wick-heater assembly including a porous wick that absorbs the stored aerosol-generating material through a porous body and a heater assembly that generates an aerosol by heating the absorbed aerosol-generating material.

Abstract: Provided herein are a vaporizer and an aerosol generation device including the same. The vaporizer according to some embodiments of the present disclosure includes a porous wick configured to absorb an aerosol-generating substrate in a liquid state through a porous body, and a heating element which includes a heating pattern having a planar form that is embedded in the porous body and which is configured to heat the absorbed aerosol-generating substrate by the heating pattern to generate an aerosol. Since the heating pattern is embedded at a predetermined depth from a surface of the porous body, the amount of generated aerosol may be increased, and the risk of damage to the wick and the carbonization phenomenon may be reduced.

Abstract: Provided herein is an aerosol generation device with a reduced preheating time. The aerosol generation device according to some embodiments of the present disclosure includes a case including an opening formed in one surface, and an article insertion portion into which an aerosol-generating article including an aerosol-generating substrate is inserted, an opening/closing type cover which is disposed on the one surface of the case to open and close the opening, and a heater configured to heat the inserted aerosol-generating article. Here, the opening/closing type cover is configured to, when closing the opening, mechanically press an aerosol-generating substrate portion of the inserted aerosol-generating article so that the entire aerosol-generating substrate portion is rapidly heated, and in this way, a preheating time of the device may be reduced.

Abstract: As an embodiment of the present disclosure, there is disclosed an aerosol generating device including: a heater configured to generate an aerosol by heating an aerosol generating substrate; a storage unit configured to store information regarding a first time period and a second time period for controlling a temperature of the heater; and a controller configured to control power supplied to the heater, wherein the controller, when the first time period time elapses after the temperature of the heater reaches the first target temperature, changes the temperature of the heater to a second target temperature for the second time period, and the sum of the first time period and the second time period is a time period in a preset change.

Abstract: An aerosol generating device measures a current temperature of a heater before power is supplied to the heater that heats an aerosol generating material, and sets a preheating completion parameter, based on the measured current temperature of the heater, and a value of an amount of heat required to be supplied to the aerosol generating material to generate an adequate amount of aerosol. The aerosol generating device controls power supplied to the heater, based on the preheating completion parameter, such that a value of an amount of heat supplied to the aerosol generating material by the heater reaches the value of the amount of heat required to be supplied to the aerosol generating material.

Abstract: A heater assembly includes a heating layer having at least a portion including a susceptor material generating heat by an external magnetic field and having a cylindrical shape therein in which an accommodation space configured to accommodate the cigarette is formed, an insulating layer surrounding at least a portion of an outer side surface of the heating layer, and a sensor pattern embedded in the insulating layer and configured to measure a temperature.

Abstract: An aerosol generation system includes a tobacco medium accommodation portion and a moisturizer accommodation portion located at an upstream end or a downstream end of the tobacco medium accommodation portion. In addition, an aerosol generation system includes an aerosol generation device including an elongated cavity for accommodating the cigarette, a first heater for heating the tobacco medium accommodation portion, and a second heater for heating the moisturizer accommodation portion.