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Active cloudwater collector

Daube, Bruce C., Jr. and Flagan, Richard C. and Hoffmann, Michael R. (1987) Active cloudwater collector. Patent number: US 4,697,462.

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A cloud water collector is disclosed comprised of a sampler duct having a plurality of spaced Teflon strands, in the form of screens, mounted across the conduit at an acute angle facing the open inlet of the conduit. Droplets in a cloud sample are drawn into the conduit by a fan located at the back end of the conduit, impact upon the Teflon strands and are drawn down to the lower ends of the strands, where they drop and the accumulated droplets are diverted to a sample bottle for collection. The cloud water collector can be automated to collect a plurality of successive cloud water samples by an automated sampler containing a reservoir into which cloud water obtained in the cloud water collector is discharged. A motor-driven turntable is provided which holds a plurality of sample bottles. When the reservoir is filled to a predetermined volume, apparatus, such as a liquid level sensor, actuates a valve to open same and discharge the liquid sample from the reservoir into one of the bottles at a filling station on the turntable. The valve then closes and the turntable rotates to index the next bottle beneath the reservoir at the filling station, and the operation is repeated to fill the latter bottle. When all of the bottles on the turntable have been filled, the indexing mechanism is deactivated and liquid accumulating in the reservoir is diverted to an overflow bottle.

Item Type:Patent
Related Patents:US06867820
Patent Classification:Current U.S. Class: 73/863.21; 55/528; 73/170.16; 73/863.02; 73/863.31; 73/864.34; 96/363. Current CPC Class: G01N 1/18 (20130101); G01N 1/2202 (20130101); B08B 2230/01 (20130101); G01N 2001/2223 (20130101); G01N 1/24 (20130101). Current International Class: G01N 1/18 (20060101); G01N 1/22 (20060101); G01N 1/24 (20060101); G01N 001/24 (); G01N 001/14 (); G01N 001/18 ().
Patent Assignee:California Institute of Technology
Related URLs:
URLURL TypeDescription Patents site Patent Office (European Patent Office)
Flagan, Richard C.0000-0001-5690-770X
Hoffmann, Michael R.0000-0001-6495-1946
Additional Information:Publication number US 4,697,462. Publication type Grant. Application number US 06/867,820. Publication date Oct 6, 1987. Application publication date May 27, 1986.
Record Number:CaltechAUTHORS:20150909-102609959
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60120
Deposited By: Irina Meininger
Deposited On:02 Dec 2015 18:31
Last Modified:03 Mar 2020 13:01

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