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US 2006/0032492 A1Published application
Real-time control of exhaust flow
OwnerRick Bagwell, Derek Schrock +1inventors
InventorsRick Bagwell, Derek Schrock, Andrey Livchak
Life of this patent
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Abstract
An interferometric detector detects fluctuations in fluid properties in the vicinity of an exhaust hood to control protective skirts that reduce the exhaust air requirement.
Claims1
A detector for detecting fumes escaping from an exhaust hood, comprising:
- an optical interferometer configured to send light through a sample path and create an interference pattern with respect to a reference beam in the vicinity of an exhaust hood;
- an optical detector configured to detect fluctuations in said pattern;
- a controller configured to detect said fluctuations and respond to a pattern thereof by generating a control signal for controlling a mechanism for controlling a shield that at least partly covers an access of said exhaust hood.
Dependencies are inferred from the claim text.