Patent ID: 8733166
Filing Date: 2014-05-27
Classification: G01F

Abstract:
1. An air flow measuring device comprising: a passage forming housing, an inner wall surface of which defines a measured passage and which includes a sensor attaching part, wherein measured air flows through the measured passage; a sensor housing that is attached to the sensor attaching part; a gap provided between the sensor attaching part and the sensor housing; and a sensor part that is disposed on the sensor housing and is configured to measure a flow rate of the measured air flowing through the measured passage, wherein: the passage forming housing further includes a guiding member guiding the measured air, which flows along the inner wall surface of the passage forming housing on an upstream side of the sensor attaching part in a flow direction of the measured air, further toward a center of the measured passage than the inner wall surface of the passage forming housing on a downstream side of the sensor attaching part in the flow direction; the guiding member is provided on the upstream side of the sensor attaching part in the flow direction of the measured air; and the guiding member is adjacent to the gap and is located upstream of the gap in the flow direction of the measured air.