Patent ID: 7258002
Filing Date: 2007-08-21
Classification: G01F

Abstract:
1. A fluid flow detecting apparatus for detecting a characteristic of fluid flowing in a fluid passage, the fluid flow detecting apparatus comprising: a sensor body that defines a bypass passage for flow of a portion the fluid flowing in the fluid passage; a sensor provided in the bypass passage for detecting a characteristic of the fluid flowing in the bypass passage; and a plurality of plates; wherein the sensor body is provided between the plurality of plates, wherein each of the plurality of plates has a width dimension oriented approximately along the direction of flow of fluid flowing in the fluid passage, wherein the width of each of the plurality of plates is greater than a corresponding width dimension of the sensor body such that the sensor body is inside a region defined between the plates; wherein the plurality of plates define a plurality of outer passages and an inner passage in the fluid passage, wherein the sensor body is provided in the inner passage, and further comprising a means for producing air flow resistance, wherein the means are provided downstream of the sensor body, and wherein the means increase an air flow loss in the respective outer passage.