| 摘要 |
This invention provides an improved method and apparatus for attenuating the sound of flowing fluid. The apparatus of this invention includes at least two attenuating areas, preferably particle-filled containers arranged serially within a housing. One of the attenuating areas has a central void into which a portion of the fluid may flow on its way through the muffler. The muffler may also include a mechanism for permitting one of the attenuating devices to move in order to accommodate changes in fluid pressure. The method includes the steps of introducing a pressurized fluid into first flow resisting means disposed within a housing; passing all of the fluid from the first speed dissipating means into a first void disposed within the housing; splitting the flow in the first void into first and second subflows; passing the first subflow from the first void into a second flow resisting means disposed within the housing; passing the first subflow out of the housing; and passing the second subflow from the first void out of the housing without passing into the second speed dissipating means.
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