Expanded grid static mixer

US6401449B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Lothar Hofmann · Burgkunstadt, DE
• Wieland Mathes · Aichach, DE
• Udo Klumpp · Burgkunstadt, DE

Key dates

• Filing date: Mar 3, 2000
• Grant date: Jun 11, 2002
• Expiry date: Mar 3, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A static mixer in the exhaust emission control system of an excess-air-operated combustion engine is formed of an expanded grid with a plurality of openings formed between crossbars. Using an expanded grid achieves both good mixing of the exhaust gas with a reducing agent in a short mixing path and properly aligns the exhaust flow.