公开(公告)号：WO2021148648A1

公开(公告)日：2021-07-29

申请号：PCT/EP2021/051521

申请日：2021-01-22

Applicant: PHILIP MORRIS PRODUCTS S.A.

Inventor： BACHE, Terry ,  GALLAGHER, Niall ,  HAWES, Eric ,  KEEN, Jarrett ,  LAU, Raymond W. ,  NEWCOMB, Ryan ,  PARROTT, Adam ,  SUNDAR, Rangaraj S.

IPC: A24F40/50 ,  A24F40/51 ,  A24F40/44 ,  A24F40/46 ,  A24F40/57 ,  A61M11/042 ,  A61M15/06 ,  A61M2205/3331 ,  A61M2205/3368 ,  A61M2205/502 ,  G01F1/696 ,  G01K13/00 ,  G01P5/02

Abstract: A method of controlling a hot wire anemometer (HWA) (2220A) of a nicotine e-vaping device (500) includes controlling, by a first PID controller, a level of power applied by the nicotine e-vaping device (500) to the HWA (2220A) based on a temperature of a heated element of the HWA (2220A) and a temperature setpoint; generating a puff detection signal indicating whether or not a puff is currently occurring with respect to the nicotine e-vaping device (500); and while the puff detection signal indicates that a puff is not currently occurring with respect to the nicotine e-vaping device (500), detecting, by a second RID controller, a change in an ambient temperature of the HWA (2220A), and controlling, by the second PID controller, the temperature setpoint such that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA (2220A).