Patent ID: 8876580
Filing Date: 2014-11-04
Classification: B60H,B61D,B64D,F16L,F24F

Abstract:
1. A duct for supplying a gaseous fluid comprising: a main compartment with a generally constant cross-section in fluid communication with a source, the main compartment defining an inner wall and having a first end and a second end defining a central axis therebetween, wherein the gaseous fluid flows in a direction generally aligned with the central axis defining a flow path; at least one nozzle disposed in the main compartment, each nozzle defining an outlet generally extending the length of the main compartment and configured to allow a gaseous fluid to flow out from the main compartment; and a plurality of solid restrictors consisting of plates extending into the flow path from a portion of the inner wall of the main compartment that is opposite from the at least one nozzle towards the central axis of the main compartment and generally perpendicularly to the flow path, wherein each restrictor is configured to produce a flow rate through the nozzle at the first end of the main compartment that is substantially equal to the flow rate through the nozzle at the second end of the main compartment, wherein the restrictors are substantially the same size and are generally equidistantly spaced along the main compartment.