Aerosol generating device
AssigneeKt&G Corporation
InventorsWon Kyeong Lee, Min Kyu Kim, Jong Sub Lee, Byung Sung Cho
Life of this patent
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Abstract
An aerosol generating device includes: a cartridge including a liquid storage and an atomizer; and a main body including a battery, a puff sensor, and a controller configured to perform pulse width modulation (PWM) control for supplying power from the battery to the atomizer, wherein the controller performs the PWM control at a first duty ratio during a puff period and performs the PWM control at a second duty ratio lower than the first duty ratio during a non-puff period between puff periods.
Claims12
An aerosol generating device comprising:
- a cartridge including a liquid storage configured to store a liquid aerosol generating material, and an atomizer configured to generate an aerosol by heating the liquid aerosol generating material;
- and
- a main body detachably coupled to the cartridge, and including:
- a battery configured to supply power to the atomizer;
- a puff sensor configured to detect a start time and an end time of a puff of a user;
- and
- a controller configured to:
- perform a pulse width modulation (PWM) control at a first duty ratio between a start time and an end time of a current puff such that a heater of the atomizer is heated to a target temperature range for generating the aerosol, and
- perform the PWM control at a second duty ratio lower than the first duty ratio between the end time of the current puff and a start time of a next puff,
- wherein a first period for the PWM control at the first duty ratio is longer than a second period for the PWM control at the second duty ratio.
An aerosol generating device comprising:
- an atomizer configured to heat a liquid aerosol generating material;
- a battery configured to supply power to the atomizer;
- a puff sensor configured to detect a start time and an end time of a puff of a user;
- and
- a controller configured to control power supplied to the atomizer by performing pulse width modulation (PWM) control during a puff period and a non-puff period, the PWM being based on the start time and the end time of the puff such that a temperature of a heater of the atomizer is maintained within a predetermined temperature range, which is lower than a target temperature range for generating an aerosol, during the non-puff period between puff periods,
- wherein a first period for the PWM control between a start time and an end time of a current puff is longer than a second period for the PWM control between the end time of the current puff and a start time of a next puff.
A method for controlling an aerosol generating device, comprising:
- detecting a start time of a puff of a user by using a puff sensor;
- after the detected start time, controlling power supplied from a battery to a atomizer by performing pulse width modulation (PWM) control at a first duty ratio such that a heater of the atomizer is heated to a target temperature range for generating an aerosol from a liquid aerosol generating material;
- detecting an end time of the puff;
- and
- after the detected end time, controlling power supplied to the atomizer by performing the PWM control at a second duty ratio lower than the first duty ratio until a start time of a next puff is detected,
- wherein a first period for the PWM control at the first duty ratio is longer than a second period for the PWM control at the second duty ratio.
Dependencies are inferred from the claim text.