Ceramic recuperator tube and a recuperator employing plural such tubes

US4612981A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Helmut Palz · Wiesbaden, DE
• Hartmut Kainer · Wiesbaden, DE

Key dates

• Filing date: Sep 7, 1984
• Grant date: Sep 23, 1986
• Expiry date: Sep 7, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F21/04
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A recuperator includes plural ceramic recuperator tubes arranged vertically on top of each other. Each tube has an outer periphery, first and second opposite ends, and a gas passage extending longitudinally between such ends. The first end includes an annular sealing surface extending radially inwardly from the periphery and an annular projection defined by a conical surface extending axially from the sealing surface to an end surface of the first end. The second end includes a square flange extending outwardly from the periphery and a stepped seal extending axially inwardly into the flange from an end surface of the second end.