Exhaust muffler for a fuel-operated heating device

US6681889B2 · kind B2 · utility

Assignee

• J. Eberspaecher GmbH & Co. KG · DE

Inventors

• Andreas Collmer · Leinfelden, DE
• Thomas Rose · Worms, DE

Key dates

• Filing date: Dec 6, 2001
• Grant date: Jan 27, 2004
• Expiry date: Dec 6, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2490/08
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust muffler for a fuel-operated heating device has upper and lower housing half shells, an exhaust gas through-duct and absorption and reflection chambers. The exhaust muffler is connectable to an exhaust pipe of the heating device. The exhaust gas through-duct has an inlet pipe of a single absorption chamber and a single following reflection chamber that are separated by a partially perforated partition, with double reversal of the exhaust gas flow, and an outlet pipe; the inlet pipe being perforated on the outer surface side, with an S-shaped curved section and a straight end section, and the outlet pipe being a straight outlet pipe, closed on the outer surface side, and the straight section of the inlet pipe runs parallel to, and at a spacing from, an inlet section of the outlet pipe.