AEROSOL GENERATOR Russian patent published in 2023 - IPC A24F47/00 A24F40/00 

FIELD: tobacco industry.

SUBSTANCE: group of inventions relates to vaporization devices with heating and, in particular, to electrically resistive heaters for vaporizing liquids to obtain inhaled aerosols. An aerosol generation device contains a heating element containing a sheet of electrically conductive material, having the first surface and the second surface opposite to the first surface, and containing a set of channels located in the sheet area and passing through the sheet from the first surface to the second surface, while channels are made in the form of micro-nozzles for the formation of directed accelerated flows of liquid medium vapor, with the formation of vapor jets. Micro-nozzles are decorated micro-cavities or structures made in sheet material. Sheet material includes highly alloyed silicon having specific electrical resistance of no more than 0.01 Ohm·cm. Micro-nozzles have a truncated cone shape characterized by a cone opening angle constant or changing along the axis, or a shape of a nozzle containing a narrowing turning into an expansion. A temperature sensor is located in at least the heating element, or a replaceable unit, or a power supply unit. In response to an output signal of the temperature sensor, at least one parameter of a pulse sequence of the power supply unit is controlled. The heating element is made with the possibility of uniform resistive heating in a pulse mode. Parameters of the pulse sequence of the power supply unit are consistent with time of thermal relaxation of the heating element in a time range from 0.1 to 100 ms for pulsed heating with the heating element of a liquid medium with the initiation of vapor jets increasing an aerosol concentration. The liquid medium is heated to a temperature not higher than the Leidenfrost point. The heating element is enclosed in a case containing an air duct, through which heat is removed by directing an airflow. The replaceable unit containing the heating element, a porous medium, as well as a filled or disposable container is replaced. Micro-nozzles are made by micro-processing of sheet material with a laser or using photolithography, followed by deep etching. In a sheet of foil, micro-nozzles are made by micro-molding or micro-punching.

EFFECT: high-density aerosol generation is provided with significantly reduced levels of health risk, as well as more standardized, less costly production.

42 cl, 18 dwg, 4 tbl