MEASUREMENT OF AIR FLOW, DETECTION OF PUFF AND MONITORING OF AMBIENT TEMPERATURE USING THERMAL ANEMOMETER Russian patent published in 2024 - IPC A24F40/50 A24F40/57 

Abstract RU 2821389 C1

FIELD: smoking accessories.

SUBSTANCE: group of inventions relates to the tobacco industry, in particular to devices simulating the tobacco smoking process. To implement the method for controlling a thermal anemometer (HWA) of a device for electronic vaping of nicotine, the power level supplied by the device for electronic vaping of nicotine on the HWA is controlled by a first PID controller, based on the temperature of the heated element HWA and the temperature setpoint. Puff detection signal is generated, indicating whether a puff is currently taking place relative to the device for electronic vaping of nicotine. While the puff detection signal indicates that the puff is not currently taking place relative to the electronic vaping device, ambient temperature change HWA is detected by means of the second PID controller. Second PID controller controls the temperature setpoint so that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA. Device for electronic vaping of nicotine contains part for storage of finished composition containing nicotine for steam, heater configured to generate steam, thermal anemometer (HWA). First PID controller is configured to control the level of power supplied by the device for electronic vaping of nicotine to the HWA. Puff detection signal generator is configured to generate a puff detection signal. Second PID controller is configured so that while the puff detection signal indicates that the puff is not currently taking place relative to the electronic vaping device, the second PID controller detects the change in the ambient temperature of the HWA and controls the temperature setpoint so that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA.

EFFECT: higher efficiency of control over heating temperature.

18 cl, 33 dwg

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RU 2 821 389 C1

Authors

Bache, Terry

Gallagher, Niall

Hawes, Eric

Keen, Jarrett

Lau, Raymond W.

Newcomb, Ryan

Parrott, Adam

Sundar, Rangaraj S.

Dates

2024-06-24Published

2021-01-22Filed