Fluid blow-off muffler

A device for muffling the sound of flowing fluid, the fluid having a pressure and the device having fluid resistance characteristics, comprising:

• a housing;
• a fluid inlet disposed in the housing;
• a fluid outlet disposed in the housing;
• a first void disposed in the housing, the void being in fluid communication with the fluid outlet of the housing;
• first means for attenuating the sound of flowing fluid, the first means being disposed in the housing, the first means having an inlet and an outlet, the first attenuating means inlet being in fluid communication with the fluid inlet of the housing, the first attenuating means outlet being in fluid communication with the first void;
• second means for attenuating the sound of flowing fluid, the second means being disposed in the housing, the second means having an inlet and an outlet, the second attenuating means inlet being in fluid communication with the first void, the second attenuating means outlet being in fluid communication with the fluid outlet of the housing;
• and
• means for splitting the fluid flowing in the first void into first and second and separate subflows, the first void communicating the first subflow with the first attenuating means inlet and the second subflow with the fluid outlet of the housing.

A device for muffling the sound of flowing fluid comprising:

• a housing;
• a fluid inlet disposed in the housing;
• a fluid outlet disposed in the housing;
• a first void disposed in the housing, the void being in fluid communication with the fluid outlet of the housing;
• first means for attenuating the sound of flowing fluid, the first means being disposed in the housing, the first means having an inlet and an outlet, the first attenuating means inlet being in fluid communication with the fluid inlet of the housing, the first attenuating means outlet being in fluid communication with the first void, the first void surrounding the outlet of the first attenuating means;
• second means for attenuating the sound of flowing fluid, the second means being disposed in the housing, the second means having an inlet and an outlet, the second attenuating means inlet being in fluid communication with the first void, the second attenuating means outlet being in fluid communication with the fluid outlet of the housing, the first void being disposed between the first and second attenuating means, thereby separating the first attenuating means outlet from the second attenuating means inlet, the first void surrounding the inlet of the second attenuating means;
• a second void in direct fluid communication with the outlet of the second attenuating means and with the fluid outlet of the housing but not in direct fluid communication with the first attenuating means;
• and
• means for splitting the fluid flowing in the first void into first and second separate subflows, the first void communicating the first subflow with the first attenuating means inlet and the second subflow with the fluid outlet of the housing.