An aerosol generating device and system with improved airflow

Abstract

There is provided an aerosol generating system comprising: an aerosol-forming article comprising an aerosol-forming substrate and a mouthpiece portion for allowing a user to draw air through the substrate; and an aerosol generating device, the device comprising a housing having proximal and distal ends and comprising at least one external surface and one internal surface, the internal surface defining an open ended cavity at the proximal end of the housing in which the aerosol-forming substrate is received, the cavity having a longitudinal extent between its proximal and distal ends, a heater element within the cavity configured to heat an aerosol-forming substrate received in the cavity, and an air inlet; wherein the system comprises a first air flow channel extending from the air inlet to a distal end of the cavity, wherein the first air flow channel extends between the heater and the external surface of the housing along at least a portion of the longitudinal extent of the cavity, and a second air flow channel extending from the distal end of the cavity to the mouthpiece portion.

Description

technical field [0001] The present specification relates to aerosol-generating devices configured to heat an aerosol-forming substrate and, in particular, to designs for ensuring beneficial air flow through the device. The invention can be advantageously applied to portable heated smoking systems. Background technique [0002] Hand-held aerosol-generating devices comprising heaters for heating the aerosol-forming substrate are known in the art. An electrically heated smoking device is one example of such a device. Typically, the aerosol-forming substrate in an electrically heated smoking device needs to be heated to temperatures of several hundred degrees Celsius in order to release volatile compounds that can form aerosols. The heater is generally located within the housing of the device at a location where it is most naturally held during smoking. It is therefore this part of the housing that gets hottest during use. [0003] From a consumer perspective, it is desirabl...

AI Technical Summary

Problems solved by technology

One of the challenges in producing a device with such a small diameter is making sure the housing doesn't get too hot to hold

For example, where the device is approximately the same size as a conventional cigarette or is only large enough to allow receipt of a cigarette-sized rod comprising an aerosol-forming substrate, the device may become uncomfortably hot

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