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Electronic aerosol provision system

A supply system, technology of electronic smoke, applied in protection against overvoltage, protection against overcurrent, tobacco, etc., can solve problems such as overheating

Inactive Publication Date: 2017-04-26
NICOVENTURES TRADING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only erratic wicking can cause overheating and hot spots

Method used

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Examples

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Embodiment Construction

[0015] Aspects and features of certain examples and embodiments are discussed / described herein. Some aspects and features of certain examples and embodiments may be implemented conventionally, and for the sake of brevity, they are not discussed / described in detail. Accordingly, it is to be understood that aspects and features of the apparatus and methods discussed herein that are not described in detail herein can be implemented according to any conventional techniques for implementing such aspects and features.

[0016] As noted above, the present disclosure relates to aerosol delivery systems, such as electronic cigarettes. In the following description, the term "e-cigarette" is sometimes used, but the term is used interchangeably with an aerosol (vapour) delivery system.

[0017] figure 1 is a schematic diagram (not to scale) of an aerosol / vapor supply system, such as electronic cigarette 10, according to some embodiments. The electronic cigarette has a generally cylindr...

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Abstract

An aerosol provision system, such as an electronic cigarette, comprises a heating element for generating an aerosol from a source liquid and control circuitry for controlling a supply of electrical power from a power supply, such as battery / cell, to the heating element. The control circuitry is configured to measure an indication of a derivative of an electrical characteristic of the heating element with respect to time, for example a first time derivative or a second time derivative of a resistance of the heating element (or a related parameter, such as conductance, current draw, power draw or voltage drop). Based on the measured time derivative, the control circuitry is configured to determine whether or not a fault condition, e.g. localised heating of the heating element, has arisen for the electronic aerosol provision system. The overall change in the electrical characteristic for the heating element caused by the localised heating may be small and so difficult to reliably identify, but the rate at which the change occurs can be expected to be relatively high, which can mean the time derivative of the local characteristic is more reliable indicator of the occurrence of the fault condition.

Description

technical field [0001] The present disclosure relates to electronic cigarette delivery systems (eg, electronic cigarettes, etc.), such as nicotine delivery systems. Background technique [0002] E-smog delivery systems such as e-cigarettes typically comprise a reservoir of a source liquid containing a formulation, usually including nicotine, from which aerosol is generated, for example by thermal vaporization. Accordingly, an aerosol source for an aerosol supply system may comprise a heater having a heating element adjacent to a wick, the wick being arranged to draw source liquid from the reservoir into the vicinity of the heating element. When the user inhales on the device, power is supplied to the heating element to vaporize the source liquid from the wick to generate an aerosol that is inhaled by the user. Such devices are typically provided with one or more air inlet apertures remote from the mouthpiece of the system. When the user draws on the mouthpiece, air is draw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24F47/00A61M11/04A61M15/06A24F40/10A24F40/46A24F40/53
CPCA61M11/042A61M15/06A61M2016/0027A61M2016/0015A61M2205/8206A61M2205/18A61M2205/44A61M2205/583A61M2205/581A24F40/10A24F40/53A24F40/46A24F47/00H02H3/08H02H3/20H02H5/04A24F40/51A24F40/57A24B15/167A24F40/50A24B15/243H05B1/0244H05B3/0019A61M2205/3368A61M2205/3653H05B2203/021
Inventor 赫尔穆特·布赫贝格尔科林·迪肯斯罗里·弗雷泽
Owner NICOVENTURES TRADING LTD
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