Patent ID: 8739619
Filing Date: 2014-06-03
Classification: G01F,G01K

Abstract:
1. An air flow measuring device adapted to be attached to a duct in which air flows, the device comprising: a fitted part that is fitted into an attachment hole which is formed through a pipe wall of the duct; a housing that extends from the fitted part to inside of the duct and includes a bypass flow passage which takes in a part of air flowing in the duct, the device being attached to the duct as a result of insertion of the housing into the duct through the attachment hole; a flow sensor that is disposed in the bypass flow passage and configured to measure a flow rate of air; and a temperature sensor component that includes: provided that a plane that is perpendicular to a direction in which the housing extends at a position where the temperature detecting element is located is an imaginary plane, an upstream end portion of the housing in the flow direction of air, which includes the upstream end of the housing, is formed in a triangular or arc shape in cross-section.