Muffler with variable damping characteristics
First Claim
1. A muffler with variable damping characteristics for pulsing gases, comprising:
- a housing;
a gas feed pipe mounted to the housing;
a plurality of pipes mounted in the housing so as to be in fluid communication with the gas feed pipe; and
actuating means mounted to the housing and including an actuating cell having a plurality of chambers which are separated by diaphragms, a plurality of springs, one of the springs being respectively mounted at each diaphragm so as to support the respective diaphragm, each chamber being configured to have a pressure connection the actuating cell further having a piston rod, a valve disk closing element mounted to the piston rod, a first pressure line which directs total gas pressure to an overpressure side of the diaphragm and a second pressure line which directs static gas pressure to a low-pressure side of the diaphragm, the valve disk being movably arranged in one of the pipes, the actuating means being operative to move the valve disk to control gas flow in the one pipe.
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Accused Products
Abstract
A muffler and an actuating cell provided so that the acoustic properties of the muffler can be changed. The pressure drop in the muffler is fed to the actuating cell as a control pressure. The actuating cell has a plurality of chambers which are separated by diaphragms. Each diaphragm is supported by a spring and each chamber has a pressure connection. A first pressure line feeds the total gas pressure to the overpressure side of the first diaphragm. Another pressure line directs the static gas pressure to the low-pressure side of this diaphragm. Attached to the diaphragm is a piston rod which carries a valve closing element which closes or opens a gas feed pipe.
41 Citations
11 Claims
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1. A muffler with variable damping characteristics for pulsing gases, comprising:
- a housing;
a gas feed pipe mounted to the housing;
a plurality of pipes mounted in the housing so as to be in fluid communication with the gas feed pipe; and
actuating means mounted to the housing and including an actuating cell having a plurality of chambers which are separated by diaphragms, a plurality of springs, one of the springs being respectively mounted at each diaphragm so as to support the respective diaphragm, each chamber being configured to have a pressure connection the actuating cell further having a piston rod, a valve disk closing element mounted to the piston rod, a first pressure line which directs total gas pressure to an overpressure side of the diaphragm and a second pressure line which directs static gas pressure to a low-pressure side of the diaphragm, the valve disk being movably arranged in one of the pipes, the actuating means being operative to move the valve disk to control gas flow in the one pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a housing;
Specification