Method and means for the detection of chemical agent droplets
OwnerRoger C. Eylerinventor
Life of this patent
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Abstract
Falling liquid droplets of a chemical agent are detected by providing a droplet collector assembly which includes an air permeable surface member disposed to intercept falling droplets and adapted to cause vaporization of the intercepted droplets into a sample air stream drawn through the surface member. The sample air stream containing droplet vapor is then led into the sample inlet of a vapor detector.
Claims30
Means for adapting a chemical agent vapor detection and alarm device to respond to liquid droplets of a chemical agent, comprising:
- a liquid droplet collector assembly mountable upon said detection and alarm device, said collector assembly having at least one droplet collector means adapted to be disposed in an attitude generally perpendicular to the path of falling droplets, said collector means including a sheet member permeable to air, said sheet member positioned at a location free from obstruction to said falling droplets and adapted to enhance the vaporization of liquid droplets falling thereupon;
- housing means disposed about the lower side of said sheet member to form a chamber, and
- conduit means communicating between the interior of said chamber and a sample inlet port of said detection and alarm device.
A method for detecting falling liquid droplets of a chemical agent comprising:
- intercepting said falling droplets;
- causing said intercepted droplets to vaporize;
- pneumatically transporting the droplet vapor in a constant volume air stream to a detector;
- passing said air stream and said vapor through the detector, and
- producing a signal responsive to the presence of chemical agent in said detector.
A device for detecting falling liquid droplets of a chemical agent comprising:
- droplet collecting means disposed to intercept falling liquid droplets, said collecting means including a sheet member permeable to air and adapted to vaporize said liquid droplets;
- housing means enclosing a chamber disposed about the bottom side of said sheet member;
- detector means adapted to produce a signal upon passage of chemical agent vapor therethrough;
- conduit means communicating between said chamber and said detector means, and
- means for drawing an air stream through said collecting means, conduit means and detector.
Means for intercepting and vaporizing falling liquid droplets of a chemical agent comprising:
- collecting means having a upper surface disposed transversely across the path of said falling droplets, said collecting means comprising an air permeable member positioned at a location free from obstruction to said falling droplets and adapted to cause vaporization of said droplets upon impact;
- chamber means formed about a lower surface of said collecting means, and
- means to draw air through said permeable member.
Dependencies are inferred from the claim text.