Patent ID: 6675662
Filing Date: 2004-01-13
Classification: G01F

Abstract:
A flow meter, especially for liquid cooling media in injection molds, comprising,a housing with an inlet and outlet conduit, a piston slidable inside the housing against a force of an axially acting spring caused by pressure from a fluid flowing through the housing, a displacement of the piston being dependent upon a flow rate of the fluid and indicated through a window; wherein a helical spring is arranged in an extension of the inlet conduit in an axial direction so that entering fluid is transported around the centrically disposed helical spring, wherein the piston (24) is formed conically and disposed in a conical recess (25), wherein the fluid, after passing an interspace between the recess (25) and the piston (24), flows into an expansion chamber which has a cross-section greater than that of the recess (25).