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Pump Unit And Method For Monitoring The Liquid Situation In A Seal Assembly In A Pump Unit

Patent No. EP3543537 (titled "Pump Unit And Method For Monitoring The Liquid Situation In A Seal Assembly In A Pump Unit") was filed by Grundfos Holding on Mar 23, 2018. The application was issued on Oct 15, 2025.

Patent Summary

Pump unit with improved seal monitoring, comprising a centrifugal pump with a dry-running electric drive motor, a sealing arrangement with a fluid reservoir, and a concentration sensor integrated into the reservoir to detect changes in liquid concentration. The sensor evaluates measured values in relation to temperature or temperature-dependent parameters to provide an alarm signal when a predetermined concentration limit is reached, enabling early detection of seal failure and facilitating timely replacement.

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WILOOct 5, 2022MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB

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EP3543537

GRUNDFOS HOLDING
Application Number
EP18163562A
Filing Date
Mar 23, 2018
Status
Patent Maintained As Amended
Sep 12, 2025
Publication Date
Oct 15, 2025
External Links
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