US 9,285,254 B2Granted

Flowmeter

AssigneeDigmesa AG

InventorsStefan Lauber, Stefan Schneider, Martin Sigrist, Christoph Rusch, Jean-Claude Frely

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Abstract

A flowmeter for liquids has a measuring housing, which encloses and rotatably mounts an impeller, said measuring housing comprising a one-piece supply pipe and discharge pipe, wherein the impeller is eccentrically arranged in the discharge pipe after a nozzle-forming constriction. A sensor encoder is associated with the impeller and a sensor which responds to the sensor encoder is provided on the measuring housing for determining the amount of liquid flowing through the measuring housing on the basis of the revolutions of the impeller. The outer diameter corresponding to the impeller is smaller than the nominal inner diameter of the discharge pipe, enabling it to be pushed into the one-piece pipe.

Claims13

Dependent claims

A flowmeter for liquids, having a measuring housing which encloses and rotatably mounts an impeller, a supply pipe, a discharge pipe, at least one sensor encoder which is assigned to the impeller, and a flow sensor which is provided on the measuring housing, responds to the sensor encoder and determines the amount of fluid flowing through the measuring housing, on the basis of the revolutions of the impeller,

wherein the measuring housing is a pipe which comprises the supply pipe and the discharge pipe in one piece, wherein a nozzle-forming constriction is arranged eccentrically in the measuring housing between the supply pipe and the discharge pipe, in that the impeller is rotatably mounted in the discharge pipe downstream of the nozzle-forming constriction, and in that the outer diameter corresponding to the impeller is smaller than the nominal inner diameter of the discharge pipe,
wherein the impeller has in the plan view in the axial pipe direction an outer face in each rotational position, such that the impeller fits into the free space provided by the inner pipe, and wherein the impeller has two side walls, on each of which a bearing element is provided axially in the center, said bearing element being assigned to a rotary bearing which is assigned to the discharge pipe.

Dependencies are inferred from the claim text.

Facts

Application: 14/411,864Filed 1 Jul 2013
Priority: EP 121746152 Jul 2012
Published: US 2015/0135851 A121 May 2015
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01F 1/115
Using rotating vanes with axial admission: with magnetic or electromagnetic coupling to the indicating device
G01F 1/075
Using rotating vanes with tangential admission: with magnetic or electromagnetic coupling to the indicating device
G01F 15/14
Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular…
G01F 15/185
Supports or connecting means for meters: connecting means, e.g. bypass conduits