Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-07-03
1992-04-07
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
7386301, G08B 1710
Patent
active
051032120
ABSTRACT:
A multi-port system sampling maintains a balanced fluid flow, and more particularly is a gas sampling system used for the rapid detection of fire in which the flow rate through each sampling system aperture is substantially equal. The system may include a single main conduit having a number of sampling apertures spaced apart for sampling different locations. The sizing of the apertures is such that an equal flow rate is present at each aperture, allowing a balanced sampling of each sampling location. The system may also include multiple secondary conduits all feeding one main conduit. Each secondary conduit has a number of different sampling apertures, and may be of a different length. The diameters of the secondary conduits are relative to the length of the conduits and the size of the respective conduit apertures so as to create a balanced fluid flow rate through each of the apertures.
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Installation Manual for Early Warning Smoke Detection Apparatus (VESDS) by Fenwal Incorporated of Ashland.
Thesis of Co-Inventor, K. Notarianni, dated Aug. 1988, Describing the Various Aspects of the Invention.
Notarianni Kathy A.
Senecal Joseph A.
Jackson Jill
Ng Jin F.
Worcester Polytechnic Institute
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