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:
Feb. 14, 2023
Filed:
Sep. 14, 2018
Ebm-papst Mulfingen Gmbh & Co., Mulfingen, DE;
Gerd Futterlieb, Obersontheim, DE;
Jens Rössler, Mulfingen, DE;
Malte Pils, Ilshofen-Oberaspach, DE;
Oliver Kleinheinz, Schrozberg, DE;
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
A temperature monitoring device for protecting the winding of an electronically commutated electric motor from being heated over a specified limit temperature Tregardless of the rotational speed includes a phase current detection device for detecting the phase current Ifor the motor windings, an overcurrent switch-off device for switching off the electric motor if a maximum permissible phase current Iis exceeded, and an overcurrent monitoring device, which is connected to the overcurrent switch-off device, in order to transmit to it a switch-off signal if the detected phase current Iexceeds the maximum permissible phase current Iascertained by a detection and computing device, wherein an algorithm in which the measured ambient temperature Tis incorporated is used when ascertaining the maximum permissible phase current I.