Aerosol generating system.

摘要

An aerosol generator useful as an atomizer for controllably and reproducibly producing wet or dry aerosols for inhalation studies, including a nebulizer (2) for producing an aerosol from a liquid and an air stream, a liquid dosing device such as a step dosing pump (4) for controllably feeding a liquid to be atomized to the nebulizer, an apparatus such as a mass flow controller (11) for regulating the flow of an air stream to the nebulizer to provide an amount needed to atomize the liquid, and optionally to dilute the resulting aerosol, a conduit (14) for conveying the aerosol formed in the nebulizer to an aerosol exposure chamber (17), a measuring device such as a light-scattering diffusion photometer (15) into which a sample of the aerosol is introduced for determining the concentration of the aerosol, and a control unit for controlling the liquid supply device and the adjustable air supply to produce an aerosol having a predetermined desired concentration; the control unit being operated either manually or by a computer (16) responsive to measured values determined by the measuring device. <IMAGE>