Micromotor and micropump

US6551083B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Thomas Weisener · Schwerin, DE
• Gerald Voegele · St. Bonifacius, US
• Mark Widmann · Brackenheim, DE
• Carlo Bark · Schallstadt, DE
• Andreas Hoch · Heilbronn, DE

Key dates

• Filing date: Nov 30, 2000
• Grant date: Apr 22, 2003
• Expiry date: Jun 9, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49242
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention concerns a micropump for the substantially continuous delivery of a mass flow, the micropump having a sleeve axis and an offset axis of rotation. An internal rotor meshes with an external rotor in a sleeve and at least one outlet-side pressure opening in a first end-face termination part. Both rotors have a dimension smaller than 10 mm. The invention further concerns a micromotor of similar construction in which the diameter of the rotors and the casing are below 10 mm. The pump and motor are extremely miniaturized yet still permit a continuous flow with high feed pressure and high output.