The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2019
Filed:
Jun. 01, 2015
Xylem Ip Management S.Ă R.l., Senningerberg, LU;
Alexander Fullemann, Sollentuna, SE;
XYLEM EUROPE GMBH, , CH;
Abstract
A method for controlling a pump arrangement upon clogging. The arrangement includes a pump and a control unit. The pump includes a motor, and the control unit drives the motor. The motor during operation is associated with an operational parameter from which the motor torque may be derived. The operational parameter has a normal value Pduring normal operation of the motor in a first direction. The method includes the steps of driving the motor in a first direction by the control unit, stopping the motor if a real value P of the operational parameter exceeds a predetermined clogging limit P, driving the motor in an opposite second direction a predetermined flushing time Tby the control unit, and stopping the motor if the absolute value of the real value P of the operational parameter during the flushing time Texceeds the absolute value of a first unfastening limit P.