Blower muffler and vibration isolation
OwnerDavid A. Curtis, Robert A. Hoyt +2inventors
InventorsDavid A. Curtis, Robert A. Hoyt, Russel H. Marvin, Bret Sleicher
Life of this patent
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Abstract
An air impeller with both sound attenuation and vibration isolation means in a compact assembly. Three muffler chambers are provided preceding the inlet to the impeller each with sound absorbing foam material and vibration isolators are provided at both inlet and discharge sides of the impeller.
Claims7
An air impeller with muffler and vibration isolation means comprising a housing defining a chamber for receiving and enclosing an air impeller and an associated electric drive motor, an impeller and electric drive motor disposed in said chamber, and impeller having an air inlet opening and a discharge opening in the housing having an air inlet opening remote from the impeller inlet opening and a discharge opening in communication with the impeller discharge opening, said housing also includes at least two sound attenuation chambers arranged to receive air seriatim from said housing inlet opening and discharge the same to said impeller inlet opening, and means defining an opening for the passage of air from one of said chambers to the other, the area of said opening and the length of each of said chambers being selected for optimum desired sound attenuation, and flexible elastomeric vibration isolators being provided at both housing inlet and discharge openings.
Dependencies are inferred from the claim text.