Patent · US Active

Electrically commutated DC motor for a liquid pump

US8174157B2 · kind B2 · utility

1Cited by

5References

18Claims

0Family size

Assignee

BÜHLER MOTOR GMBH · DE

Inventors

Olai Ihle · Eckental, DE
Georg Bernreuther · Nuremberg, DE
Klaus Weiske · Altdorf, DE

Key dates

Filing date	Dec 15, 2009
Grant date	May 8, 2012
Priority date	—
Expiry date	Nov 5, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2203/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrically commutated DC motor (1) for a liquid pump (2) with a pump housing (3) with a suction connector (4) and a pressure connector (5) for connection to a hydraulic circuit, an essentially disk-like pump rotor (6) mounted to rotate in the pump housing, consisting of an impeller (7) with several pump vanes and a permanent magnet (8), a partition (11) separating a pump space (9) from a dry space (10), in which the partition is arranged in an axial gap (12) between the pump rotor (6) and several axially aligned wound stator poles (14) of the DC motor. The present invention configures a DC motor, so that it can be installed simply and reliably, is designed particularly robust and therefore has a very long operating lifetime.

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