Aerosol generating device and control method

A control method for a vapor generation device, wherein the vapor generation device comprising:

• a susceptor, configured to be penetrated by a changing magnetic field to generate heat, to heat the vapor generation product;
• and
• an oscillator, comprising an inductance coil and a capacitor, and configured to guide a changing current to flow through the inductance coil to drive the inductance coil to generate the changing magnetic field;
• and
• the method comprises:
• detecting a peak voltage of the oscillator;
• and
• determining an oscillation frequency of the oscillator according to the peak voltage;
• wherein the oscillator is a parallel LC oscillator comprising the inductance coil and the capacitor connected in parallel and the controller drives, using a pulse with a changing frequency, the parallel LC oscillator to oscillate, determines an optimal frequency of the parallel LC oscillator according to the peak voltage detected by the peak detection unit, and controls the parallel LC oscillator to guide the changing current according to the optimal frequency, wherein in the pulse with a changing frequency, the frequency gradually changes in descending order;
• or wherein the oscillator is a serial LC oscillator or a serial LCC oscillator comprising the inductance coil and the capacitor connected in series and the controller drives, using a pulse with a changing frequency, the oscillator to oscillate, and determines a resonance frequency of the oscillator according to the peak voltage detected by the peak detection unit, wherein in the pulse with a changing frequency, the duty ratio is constant, and the frequency gradually changes in descending order.

A vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation, and comprising:

• a parallel LC oscillator, comprising an inductance coil and a capacitor connected in parallel, and configured to guide a changing current to flow through the inductance coil to drive the inductance coil to generate a changing magnetic field;
• a susceptor, configured to be penetrated by the changing magnetic field to generate heat, to heat a vapor generation product received in a cavity;
• a transistor switch;
• and
• a controller, configured to control on and off of the transistor switch by using a pulse, so as to drive the parallel LC oscillator to oscillate, to guide the changing current to flow through the inductance coil, wherein a duty ratio of the pulse is greater than 50%,
• wherein the controller further is configured to drive, using a pulse with a changing frequency, the parallel LC oscillator to oscillate, determine an optimal frequency of the parallel LC oscillator according to the peak voltage detected by the peak detection unit. and control the parallel LC oscillator to guide the changing current according to the optimal frequency;
• wherein in the pulse with a changing frequency. the frequency gradually changes in descending order.