PUFF SENSING AND POWER CIRCUITRY FOR VAPORIZER DEVICES

    公开(公告)号:EP3824748A1

    公开(公告)日:2021-05-26

    申请号:EP20216524.7

    申请日:2018-11-23

    申请人: Juul Labs, Inc.

    摘要: Vaporizer device features capable of improving on current approaches to mitigating against device damage or inoperability occurring from liquid exposure (e.g. exposure to liquid vaporizable material possibly affecting a pressure sensor, internal electronic circuitry, and/or electrical contact pins) are described. In particular a vaporizer device (100, 200) comprising an absolute pressure sensor (604) positioned to detect a first pressure of air along an airflow path within the vaporizer device and an additional absolute pressure sensor (606) positioned to detect a second pressure of air representative of ambient air pressure to which the vaporizer device is exposed; and a controller configured to determine, based on at least the first signal and the second signal, that a puff is occurring, and causing causing resistive heating of a vaporizable material for forming of an inhalable aerosol.

    VAPORIZATION DEVICE
    5.
    发明公开
    VAPORIZATION DEVICE 审中-公开

    公开(公告)号:EP3777573A1

    公开(公告)日:2021-02-17

    申请号:EP20197480.5

    申请日:2017-02-27

    申请人: Juul Labs, Inc.

    IPC分类号: A24F40/57 A24F47/00 H05B1/02

    摘要: A vaporization device comprises a resistive heater, a measurement circuit to measure the resistance of the resistive heater at discrete intervals, and a microcontroller to determine a baseline resistance after a period of time has passed since power was last supplied to the resistive heater and a target resistance. Changes in the resistance during heating are used to control the power applied to the heater. The measurement circuit may comprise an operational amplifier configured to receive an input from a Wheatstone bridge.