Airborne component extractor with improved flow paths

摘要

A component extraction system utilized a base unit that produces a positive pressure air stream and that draws a negative pressure air stream into the base unit. To enhance performance, and reduce head requirements and power consumption, a number of bends in the flow paths is minimized in the base unit.

主权项

1. An extractor system comprising:
a base unit comprising a source of a positive pressure gas stream and a negative pressure gas stream; a positive pressure conduit configured to convey a positive pressure gas stream towards a work area; a negative pressure conduit configured to convey a negative pressure gas stream from the work area; and a hood coupled to receive the positive pressure gas stream and to direct the positive pressure gas stream into a region around the work area and to draw airborne components from the work area into the negative pressure gas stream; wherein the base unit comprises at most 5 bends between a location of return of the negative pressure gas stream and a location of exit of the positive pressure gas stream, wherein one of the at most 5 bends comprises a smooth, radiused elbow that delivers the positive pressure gas stream to a manifold, wherein the manifold comprises:
a central passage fluidly coupled to the negative pressure conduit, the central passage extending along a central axis, and configured to receive the negative pressure gas stream;an inlet fluidly coupled to the elbow and configured to receive the positive pressure gas stream; anda volute passage fluidly coupled to the inlet and disposed about the central passage, wherein the volute passage is configured to receive the positive pressure gas stream from the inlet and direct the positive pressure gas stream to an annular space extending along the central axis between the negative pressure conduit and the positive pressure conduit.