Poppet damper in exhaust gas duct
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United States of America Patent
Stats
-
Apr 14, 1998
Grant Date -
N/A
app pub date -
Apr 15, 1997
filing date -
Sep 28, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a poppet damper, disposed in an exhaust gas duct, which makes it possible to perform an easy machining for providing a sealing surface and which provides excellent sealing following deformation caused by heat. The poppet damper includes a damper seat, disposed in a duct casing; a poppet plate for controlling exhaust gas flow by adjustment of a gap between the poppet plate and the damper seat; and an air cylinder and a damper shaft for allowing driving of the aforementioned poppet plate in a reciprocating manner. A seal plate is mounted to the poppet plate (3), which seal plate is separated by a gap of predetermined size from the poppet plate, with the seal plate placed in contact with the damper seat when the damper is closed.
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