Patent ID: 6311569
Filing Date: 2001-11-06
Classification: G01F

Abstract:
Device which is used to determine the flow rate of a fluid including a housing (1) with a chamber (2) through which the fluid flows in an axial direction (as indicated by arrow 50) and which receives an impeller wheel (10) with one blade (13), the impeller wheel (10) being provided with a carrier body (12) having a central boring (15) for receiving an axle (11), the carrier body (12) being provided with at least one radially extending opening (12a) extending between the axle in the central boring (15) and the chamber (2),characterized in that a perforated disc (21) is mounted in one end of the chamber (2) and the axle (11) viewing the chamber (2) in the direction of the flow of the fluid (arrow 50), is mounted in at least one bearing (17 or 18) in the carrier body (12), and a radial space allowance is provided between the boring (15) of the carrier body (12) and the axle (11) into which fluid enters through the at least one bearing (17 or 18) into the boring (15) on account of the radial space allowance between the boring (15) in the carrier body (12) and the axle (11) and exits through the at least one radially extending opening (12a) in the carrier body (12).