Patent · US Active

Method for determining a state of an electric motor and a corresponding electric motor and fan

US12199493B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

ZIEHL-ABEGG SE · DE

Inventors

Raphael Simon Obst · Öhringen, DE
Mato Mathias Krcmar · Öhringen, DE

Key dates

Filing date	May 5, 2020
Grant date	Jan 14, 2025
Priority date	—
Expiry date	Jul 7, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for determining a state of an electric motor having a stator (2) and a rotor (3) rotatably mounted relative to the stator (2) is disclosed. Due to a rotary motion of the rotor (3), a pressure difference (p) relative to an environment (15) of the electric motor (1, 1′, 1″, 1′″) is caused in an air space (16) inside the electric motor (1, 1′, 1″, 1′″). Here, in a normal state of the electric motor (1, 1′, 1″, 1′″), the pressure difference depends on an actual rotational speed (n) of the rotor (3). A corresponding electric motor suitable for carrying out this method is disclosed, wherein the electric motor may be part of a fan.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.