Aerosol generator

Abstract

An aerosol generating apparatus is disclosed. The aerosol generating apparatus of this disclosure includes a body having an insertion space opening to the upper side and an induction coil surrounding the insertion space; a heater holder having a heater detachably coupled to the body and housed in the insertion space; a temperature sensor disposed adjacent to the heater; a power supply for supplying power to the induction coil; and a control unit for controlling the power applied to the induction coil, wherein the control unit can determine a reference impedance parameter in response to a signal received by the temperature sensor, determine the impedance parameter of the heater based on the current value flowing through the induction coil, and control the power applied to the induction coil based on the reference impedance parameter and the determined heater impedance parameter.

Claims

1. A body comprising an insertion space opening on the upper side and an induction coil surrounding the insertion space, A heater holder comprising a heater detachably coupled to the body and housed in the insertion space, A temperature sensor is positioned adjacent to the heater, A power supply that provides power to the aforementioned induction coil, The system includes a control unit that controls the power applied to the induction coil, The control unit, The reference impedance parameter is determined according to the signal received by the temperature sensor. The impedance parameter of the heater is determined based on the current value flowing through the induction coil. An aerosol generator that controls the power applied to the induction coil based on the reference impedance parameter and the determined heater impedance parameter.

2. The system further includes a memory for storing reference information, including the signal received by the temperature sensor, the temperature of the reference heater, and the matching relationship of the reference impedance parameters. The control unit, The temperature of the reference heater is determined according to the signal received by the temperature sensor. The aerosol generating apparatus according to claim 1, which determines a reference impedance parameter corresponding to the temperature of the reference heater.

3. The control unit, The reference impedance parameter and the determined heater impedance parameter are compared, The aerosol generating apparatus according to claim 2, wherein the relationship between the impedance parameter and temperature of the heater is determined based on the difference between the reference impedance parameter and the determined impedance parameter of the heater.

4. The control unit, Within at least one heating interval, the impedance parameter of the heater is repeatedly determined at set time intervals. The temperature of the heater is determined by comparing the determined impedance parameter of the heater with the relationship between the impedance parameter of the heater and the temperature. The aerosol generating apparatus according to claim 3, wherein the power supplied to the induction coil is controlled based on the temperature of the heater determined above.

5. The control unit, The temperature of the reference heater determined above is compared with the first temperature. The aerosol generating apparatus according to claim 2, wherein if the temperature of the determined reference heater is less than or equal to the first temperature, a reference impedance parameter corresponding to the temperature of the reference heater is determined.

6. The control unit, The temperature of the aforementioned reference heater is repeatedly determined, The aerosol generating apparatus according to claim 2, wherein a reference impedance parameter corresponding to the temperature of the reference heater is determined when the temperature of the reference heater is maintained within a certain temperature range for a first hour or longer.

7. The control unit, A constant first voltage is applied to the induction coil at set time intervals. The aerosol generating apparatus according to claim 1, wherein the impedance parameter of the heater is determined based on the current value flowing through the induction coil in response to the first voltage.

8. The circuit includes the induction coil and a coil drive circuit electrically connected to the power supply, The coil drive circuit includes a converter circuit that converts the voltage output from the power supply. The aerosol generating apparatus according to claim 1, wherein the control unit determines the impedance parameter of the heater based on the current value output from the converter circuit.

9. The circuit includes the induction coil and a coil drive circuit electrically connected to the power supply, The coil drive circuit includes an inverter circuit that converts a DC power supply to an AC power supply. The aerosol generating apparatus according to claim 1, wherein the control unit determines the impedance parameter of the heater based on the current value output from the inverter circuit.

10. The body pipe includes side walls surrounding the insertion space and a bottom wall covering the bottom of the insertion space, The aerosol generating apparatus according to claim 1, wherein the temperature sensor is positioned adjacent to the lower wall of the body pipe.

11. The heater holder is provided with a second insertion space inside, The heater holder includes a side wall surrounding the second insertion space and a bottom wall covering the bottom of the second insertion space. The aerosol generating apparatus according to claim 10, wherein the heater extends along the longitudinal direction of the second insertion space, and its lower end is coupled to or fixed to the lower wall.

12. The heater holder includes a side wall that forms at least a portion of the second insertion space which opens upward and a lower wall that is located below the second insertion space. The aerosol generating apparatus according to claim 10, wherein the heater extends along the longitudinal direction of the second insertion space, and its lower end is coupled to or fixed to the lower wall.

13. The aerosol generating apparatus according to claim 1, wherein the impedance parameter is the apparent resistance value of the heater.

Images