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:
Oct. 12, 2021
Filed:
Mar. 22, 2019
Grundfos Holding A/s, Bjerringbro, DK;
Gert Friis Eriksen, Bjerringbro, DK;
Jens Kjær Milthers, Bjerringbro, DK;
GRUNDFOS HOLDING A/S, Bjerringbro, DK;
Abstract
A pump assembly includes an electrical drive motor () and an impeller which is connected to the drive motor () via a shaft (). The shaft extends between the drive motor () and the impeller, through a seal arrangement with a fluid reservoir (). A method is provided for detecting a concentration change in a fluid reservoir in the seal arrangement in the pump assembly. A concentration sensor () detects a concentration change in the fluid reservoir (), and a second sensor () detects at least one further parameter of the fluid reservoir (). The sensors are arranged on the fluid reservoir (). The sensors are connected to an evaluation device (). The evaluation device () is configured to carry out an evaluation of at least one reading of the concentration sensor (), taking into account at least one reading which is detected by the second sensor ().