Muffler with variable acoustic properties

Abstract

A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the piston rod. Another layer of thermal insulation is provided between the closing element and the pressure cell.

Description

Technical field [0001] The present invention relates to a muffler with variable acoustic characteristics for pulsed gas. It at least includes a housing in which a pipe and an exhaust valve with a pressure nozzle are integrated. The nozzle has a diaphragm, a spring, The piston, the piston rod, the closing part on the piston rod and the pressure connecting pipe one, and a guide sleeve for the piston rod; the closing part more or less closes one of the pipes. Background technique [0002] From DE 195 03 322 C, a muffler with variable attenuation characteristics for pulsed gas is known. It includes a housing, an air duct leading to the housing, a pipe integrated therein, a diaphragm, a spring, The high-pressure nozzle of the piston rod and the pressure joint, in which the low-pressure side of the diaphragm is loaded by ambient pressure and spring, a pressure pipe that conducts gas pressure to the high-pressure side of the diaphragm, and a closing component for opening and closing the...

AI Technical Summary

Problems solved by technology

But this natural cooling is not always sufficient in exhaust systems with high thermal loads

This causes premature aging and corrosion of temperature-sensitive parts, especially piston rods, guide sleeves and diaphragms

this is unsatisfactory

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