Thermal Fluid Flow Rate Measurement Device

Abstract

Provided is a thermal fluid flow rate measurement device that inhibits the thermal fluid flow rate measurement device and peripheral parts from thermally affecting an intake air temperature detection element and measures an intake air temperature with high accuracy. The thermal fluid flow rate measurement device includes an auxiliary passage 8 that is inserted into a main passage 2 to acquire a part of an air flow 7 in the main passage, a base member 5 that forms a part of the auxiliary passage, a flow rate detection element 11 that is supported by the base member and disposed in the auxiliary passage to detect the flow rate of a fluid, and a circuit section 10 that is electrically connected to the flow rate detection element and housed in a circuit chamber 21 formed by a mold member 4 which is a part of the auxiliary passage. An intake air temperature detection element 9 is disposed outside the auxiliary passage and mounted on an upstream end face of the mold member relative to the air flow to detect the intake air temperature.

Dependencies are inferred from the claim text.