QUASI-RESONANT REVERSE-PASS CONVERTER FOR INDUCTION AEROSOL DELIVERY DEVICE Russian patent published in 2022 - IPC A24F47/00 A24F40/465 H05B6/10 

FIELD: tobacco industry.

SUBSTANCE: group of inventions relates to induction aerosol delivery devices. An aerosol delivery device contains an aerosol precursor composition and a quasi-resonant reverse-pass converter made with the possibility of causing evaporation of components of the aerosol precursor composition to produce aerosol. The quasi-resonant reverse-pass converter contains a transformer with an induction transmitter and receiver. A capacitor forms an oscillatory circuit with the induction transmitter. A transistor is made with the possibility of cyclic switching for generating an oscillatory magnetic field by the induction transmitter and inducing an alternating voltage in the induction receiver under the influence of the specified oscillatory magnetic field. The alternating voltage causes the induction receiver to generate heat with the evaporation of components of the aerosol precursor composition. Each of cycles includes a switching on interval of the transistor with the possibility of current flowing through the induction transmitter and a switching off interval with stopping of current flowing through the induction transmitter and the disappearance of the magnetic field. The disappearance of the magnetic field provides the possibility of energy transfer from the induction transmitter to the induction receiver and the possibility of charging the capacitor to ensure a shape of a voltage curve at a transistor drain. The quasi-resonant reverse-pass converter contains a comparator with two input terminals connected to each side of the capacitor between the capacitor and the transistor drain. The comparator is made with the possibility of determining a minimum in the form of a voltage curve during the switching off interval, in which the transistor is switched off, and generating an output signal in response, in order to cause the transistor to switching on at the switching on interval. Options of a control case for the aerosol delivery device are claimed.

EFFECT: increase in the efficiency of aerosol delivery by optimizing the heating of the aerosol-containing composition.

26 cl, 18 dwg