Patent ID: 7631562
Filing Date: 2009-12-15
Classification: G01F

Abstract:
1. A high mass-flow sensing apparatus, comprising: a flow tube bypassed in a flow path defined by a flow channel, through which a fluid flows, wherein said flow tube includes at least one upstream portion and at least one downstream portion; a flow sensor disposed between said at least one upstream portion and said at least one downstream portion of said flow tube in order to measure a flow rate of said fluid in said flow channel, wherein said flow sensor is associated with said flow path of said flow channel; and at least one flow restrictor molded in a narrow rectangular shape into said flow tube and located adjacent to said flow sensor, wherein said at least one flow restrictor laminarizes said flow rate of said fluid in said flow tube, thereby reducing flow turbulence, and promotes a bidirectional flow of said fluid through said flow tube which contributes to an optimal sensing performance of said flow sensor.