Process, sensor and diagnosis device for pump diagnosis

US7693684B2 · kind B2 · utility

Assignee

• IFM Electronic GmbH · US

Inventors

• Lorenz Halbinger · Leutkirch im Allgäu, DE
• Matthias Hoffmann · Hendersonville, US
• Joerg Schuetze · Günzburg, DE
• Daniel Spinnenhirn · Tettnang, DE
• Alfred Wagner

Key dates

• Filing date: Oct 17, 2006
• Grant date: Apr 6, 2010
• Expiry date: Oct 17, 2026

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B51/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A process for detecting the operating state of a pump of a pump system, involves the steps of: detecting at least one pressure and/or flow profile P(t) in the pump system, computing of at least one characteristic value Kkal from the pressure and/or flow profile P(t), comparing the computed characteristic value Kkal with at least one defined characteristic value Kvor or with a range bordered by the characteristic value Kvor, the defined characteristic value Kvor or the characteristic value range corresponding to the operating state of the pump of interest, and outputting the operating state determined by the comparison. With the process, the operating states of pumps, pump systems and hydraulic systems is determined by the computed characteristic value Kkal characterizing the pulsation of the pressure and/or flow profile P(t) in a computation time interval ΔtB, the pulsation quotient being computed as the computed characteristic value Kkal.