Patent ID: 7513273
Filing Date: 2009-04-07
Classification: G05D

Abstract:
1. A flow control device having a fluid pathway comprising a micro-channel having a first segment having an inner wall and being of a first radius, a second tapered segment having an inner wall, a third segment having an inner wall and second radius greater than said first radius, said inner wall of second tapered segment extending from said inner wall of said first segment toward said inner wall of said third segment at an acute angle and having an initial radius and a third radius substantially equal to said second radius of said third segment and means within said fluid pathway for achieving flow rate stabilization by providing viscosity dependent resistance to fluid flow along said fluid pathway, said means comprising a stationary vane protruding into said fluid pathway, said vane being constructed and arranged to produce an eddy within the fluid flowing along said micro-channel, said vane having a thickness of between about 5 μm and about 100 μm.