Patent ID: 8931908
Filing Date: 2015-01-13
Classification: F15D,G01N,Y10T

Abstract:
1. A fluid purge apparatus, comprising: a collar, said collar substantially surrounding a protected volume to be purged, wherein the protected volume has an upstream opening and a downstream opening, and wherein a curved surface is positioned around a periphery of the downstream opening out of the protected volume and the curved surface is defined by a distally decreasing exterior diameter; at least one primary flow pathway formed in the collar and configured to provide a primary fluid stream adjacent the curved surface to encourage attached flow of the primary fluid stream over at least a portion of the curved surface; and at least one secondary flow pathway formed in the collar and configured to provide a secondary fluid stream into the protected volume upstream opening, wherein the secondary flow pathway provides the secondary fluid stream evenly distributed entering around the protected volume upstream opening, and the secondary flow pathway discharges the secondary fluid stream into the protected volume upstream from a location where the primary flow pathway discharges the primary fluid stream to the curved surface; whereby the primary flow pathway is positioned relative to the secondary flow pathway such that an entraining primary fluid stream entrains the secondary fluid stream downstream from the protected volume, wherein the entraining primary fluid stream downstream of the protected volume is a greater amount of flow than the secondary fluid stream.