Burner

US5588826A · kind A · utility

Assignee

• ABB Management AG · CH

Inventors

• Klaus Dobbeling · Windisch, CH
• Jurgen Haumann · Rekingen, CH
• Hans Peter Knopfel · Besenbüren, CH
• Bettina Paikert · Oberrohrdorf, CH
• Thomas Ruck · Mellingen, CH
• Thomas Sattelamayer · Mandach, CH
• Christian Steinbach · Hohenhameln, DE

Key dates

• Filing date: Aug 3, 1995
• Grant date: Dec 31, 1996
• Expiry date: Aug 3, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23D2209/20
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

In a burner which consists of a swirl generator (100) on the oncoming-flow side, the flow (40) formed herein is passed smoothly into a mixing section (220). This is done with the aid of a transition geometry which is present at the start of the mixing tube (220) and consists of transition passages (201) which cover sectors of the end face of the mixing section (220), in accordance with the number of sectional bodies of the swirl generator (100), and run helically in the direction of flow. On the outflow side of these transition passages (201), prefilming bores (21) pass through the mixing section (220), which prefilming bores (21) initiate an increase in the flow velocity along the tube wall. Adjoining the mixing section (220) is a combustion chamber (30) in which a backflow zone (50) forms in the region of the jump in cross-section between mixing section (220) and combustion chamber (30).