Patent ID: 6851310
Filing Date: 2005-02-08
Classification: G01F

Abstract:
1. A flowmeter comprising: a fluid storage portion formed in a housing, the fluid storage portion being connected to a fluid inlet tube formed in the housing; and a flow rate measuring portion which is disposed in the fluid storage portion and in which a fluid flow passageway is formed and an outlet port of the fluid flow passageway is connected to a fluid outlet tube formed in the housing and in which a heat type flow rate sensor is disposed including a fin plate projecting into the fluid flow passageway, wherein an auxiliary flow passageway for leading fluid in the fluid storage portion toward an inlet port of the fluid flow passageway is formed in the flow rate measuring portion, and the auxiliary flow passageway comprises a plurality of fluid introducing ports and a fluid discharging port which is connected to the fluid introducing ports and which is positioned closer to the fluid flow passageway inlet port than to the fluid introducing ports.