Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1992-01-13
1992-10-20
Miles, Tim
Gas and liquid contact apparatus
Fluid distribution
Pumping
261 782, 261 55, 261 361, 12820325, 12820312, B01F 304
Patent
active
051567768
ABSTRACT:
An aerosol generator useful as an atomizer for controllably and reproduci producing wet or dry aerosols for inhalation studies, including a nebulizer for producing an aerosol from a liquid and an air stream, a liquid dosing device such as a step dosing pump for controllably feeding a liquid to be atomized to the neubilizer, an apparatus such as a mass flow controller 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 for conveying the aerosol formed in the nebulizer to an aerosol exposure chamber, a measuring device such as a light-scattering diffusion photometer 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 responsive to measured values determined by the measuring device.
REFERENCES:
patent: 4471773 (1984-09-01), Bunnell et al.
patent: 4611590 (1986-09-01), Ryschka et al.
patent: 4629478 (1986-12-01), Brower et al.
patent: 4905685 (1990-03-01), Olsson et al.
patent: 5030253 (1991-07-01), Tokuhiro et al.
Klingebiel Randolf
Koch Wolfgang
Loedding Hubert
White Richard
Windt Horst
Fraunhofer-Gesellschaft zur Foerderung dur angewandten Forschung
Miles Tim
Solvay Deutschland GmbH
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