Aerosol generating device, method of controlling aerosol generating device, and program

Patent metadata

Field	Value
Publication number	US-10925323-B2
Application number	US-202016801172-A
Country	US
Kind code	B2
Filing date	Feb 26, 2020
Priority date	Apr 24, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

Provided is an aerosol generating device which is capable of stopping aerosol generation at an appropriate timing. This aerosol generating device includes a power source which supplies power in order to atomize an aerosol source and/or heat a flavor source; a sensor which outputs a measurement value for controlling the power supplied; and a circuitry which controls the power supplied from the power source on the basis of the measurement value. The circuitry controls to increase a power supply amount per unit time in response to a first condition that the measured value is equal to or larger than a first threshold being satisfied, and to decrease the power supply amount per unit time in response to a second condition that the measured value is less than a second threshold greater than the first threshold and a third condition which is different from the first condition and the second condition being satisfied.

First claim

The invention claimed is:

1. An aerosol generating device, comprising:
a battery;
a container configured to retain liquid;
an atomizer configured to atomize the liquid, the atomizer including a porous ceramic structure configured to retain the liquid at a position at which heat is applied to the liquid by the porous ceramic structure;
a pressure sensor configured to measure values corresponding to an inhalation performed by a user of the aerosol generating device to determine whether a criteria for triggering generation of aerosol by the atomizer has been satisfied;
a timer; and
circuitry configured to
initiate supplying a first amount of power from the battery to the atomizer for a first period of time in a case that a signal output by the pressure sensor indicates that the criteria for triggering generation of the aerosol has been satisfied and an output of the timer satisfies a first time condition; and
supply a second amount of power, which is greater than the first amount of power, from the battery to the atomizer for a second period of time, which follows the first period of time, in a case that the signal output from the pressure sensors indicates that the criteria for triggering generation of the aerosol has been satisfied.

2. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
supply the second amount of power, which is greater than the first amount of power, from the battery to the atomizer for the second period of time, in a case that the signal output from the pressure sensors continuously indicates that that the criteria for triggering generation of the aerosol has been satisfied.

3. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
supply the second amount of power, which is greater than the first amount of power, from the battery to the atomizer for the second period of time, in a case that the signal output from the pressure sensors continuously indicates that that the criteria for triggering generation of the aerosol has been satisfied since the first amount of power was supplied from the battery to the atomizer.

4. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
stop the second amount of power from being supplied from the battery to the atomizer in a case that a signal output by the pressure sensor indicates that the criteria for triggering generation of the aerosol by the atomizer is no longer satisfied.

5. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
stop the second amount of power from being supplied from the battery to the atomizer in a case that a signal output by the pressure sensor indicates that the criteria for triggering generation of the aerosol by the atomizer is no longer satisfied and after a second time condition that is triggered by an output of the pressure sensor is satisfied.

6. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
stop the second amount of power from being supplied from the battery to the atomizer in a case that a signal output by the pressure sensor continuously indicates that the criteria for triggering generation of the aerosol has been satisfied and the second amount of power has been supplied to the atomizer for more than a predetermined period of time.

7. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
stop the second amount of power from being supplied from the battery to the atomizer in a case that a signal output by the pressure sensor continuously indicates that the criteria for triggering generation of the aerosol by the atomizer has been satisfied for more than a predetermined period of time.

8. The aerosol generating device of claim 1 , wherein
the first period of time is less than 100 ms.

9. The aerosol generating device of claim 1 , wherein
the first amount of power supplied to the atomizer is insufficient to for the atomizer to atomize the liquid.

10. The aerosol generating device of claim 1 , wherein
the first time condition is variable based on an operational characteristic of the atomizer.

11. The aerosol generating device of claim 1 , further comprising:
a housing that includes the battery and the pressure sensor.

12. The aerosol generating device of claim 11 , wherein
the container includes the atomizer.

13. The aerosol generating device of claim 12 , wherein
the container is configured to be removably attached to the housing.

14. The aerosol generating device of claim 13 , wherein
the container includes an electrical connection configured to be electrically connected to the battery in a case that the container is attached to the housing.

15. The aerosol generating device of claim 1 , wherein
the porous ceramic structure includes pores configured to transfer the liquid by capillary action to the position so that the liquid is heated when power is supplied to the atomizer.

16. The aerosol generating device of claim 1 , wherein
the criteria for triggering generation of the aerosol by the atomizer corresponds to a detection of a change in pressure in the air intake path detected by the pressure sensor.

17. The aerosol generating device of claim 1 , further comprising:
a memory configured to store computer-executable instructions, wherein
the circuitry is microprocessor or microcomputer configured to control supplying power from the battery to the atomizer by executing the computer-executable instructions stored in the memory.

18. The aerosol generating device of claim 1 , further comprising:
an air intake flow path; and
an aerosol flow path, wherein
the air intake flow path is configured to feed air into the atomizer in response to the inhalation performed by the user, and
the aerosol flow path is configured to deliver the aerosol generated by the atomizer to the user in response to the inhalation performed by the user.

19. A method performed by an aerosol generating device comprising a battery, a container configured to retain liquid, an atomizer including a porous ceramic structure that holds the liquid at a position so that the liquid is heated when power is supplied to the atomizer, a pressure sensor configured to detect pressure in an air intake path of the aerosol generating device, and a timer, the method comprising:
initiating supplying a first amount of power from the battery to the atomizer for a first period of time in a case that a signal output by the pressure sensor indicates that the criteria for triggering generation of the aerosol has been satisfied and an output of the timer satisfies a first time condition; and
supplying a second amount of power, which is greater than the first amount of power, from the battery to the atomizer for a second period of time, which follows the first period of time, in a case that the signal output from the pressure sensors indicates that the criteria for triggering generation of the aerosol has been satisfied.

20. An aerosol generating device, comprising:
a battery;
a container configured to retain liquid;
an atomizer configured to atomize the liquid, the atomizer including a porous ceramic structure configured to retain the liquid at a position at which heat is applied to the liquid by the porous ceramic structure;
means for measuring values corresponding to an inhalation performed by a user of the aerosol generating device to determine whether a criteria for triggering generation of aerosol by the atomizer has been satisfied;
a timer;

Assignees

• Japan Tobacco Inc

Inventors

• Nakano Takuma
• Fujita Hajime

Classifications

• B01F23/21

  by introducing liquids into gaseous media · CPC title

• H05B1/02

  Automatic switching arrangements specially adapted to apparatus {; Control of heating devices} (thermally-actuated switches H01H37/00) · CPC title

• A24F40/51

  Arrangement of sensors · CPC title

• A24F40/50 Primary

  Control or monitoring · CPC title

• A61M2205/8206

  battery-operated · CPC title