Fan noise suppressor and baffle

• Main Authors: MIERS; BRUCE W, PROKSCH; FREDERICK D, WELKER; GERALD H
• Format: Patent
• Language: English
• Published: 31.10.1978
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PERFORMING OPERATIONS; PHYSICS; SOUND-PRODUCING DEVICES; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

A power unit including a liquid-cooled engine, a radiator in fluid communication with the engine for cooling engine coolant, a fan on one side of the radiator for directing air therethrough, and a noise suppressing baffle on the other side of the radiator for altering the path of travel of air exiting the radiator and absorbing fan noise including a housing containing, noise suppressing material. The housing includes the improvement wherein a perforated panel faces the side of the radiator opposite the fan and is slightly spaced therefrom with the panel being pyramid-shaped and extending toward the radiator and presenting at least three generally planar surfaces intersecting at a common point to the radiator.