초록 ▼

A noise reduction hood for attenuating the acoustic noise of cooling fans emanating from an electronic enclosure. The hood is comprised of a base that is constructed and arranged to be supported on the enclosure. The base has an air duct that is adapted to pass air therethrough in a first direction,

A noise reduction hood for attenuating the acoustic noise of cooling fans emanating from an electronic enclosure. The hood is comprised of a base that is constructed and arranged to be supported on the enclosure. The base has an air duct that is adapted to pass air therethrough in a first direction, and includes at least one noise reduction panel disposed in the air duct to attenuate acoustic noise emanating from the enclosure. In one embodiment, the noise reduction panel divides the air duct into a plurality of acoustical flow passages extending through the base. In another embodiment, the hood includes a cover, which may be detachable, that is adapted to divert the air from the first direction to a second direction. In a further embodiment, the hood includes a rim extending from the base for surrounding a portion of the enclosure to secure the hood to the enclosure. The hood may include a plurality of interlocking panels that are arranged in a grid pattern to form an array of acoustical flow passages.

대표청구항 ▼

[ What is claimed is:] [1.] A noise reduction hood for an electronic system enclosure, the enclosure having an aperture that is adapted to receive air therethrough, the hood comprising:a base that is constructed and arranged to be supported on the enclosure, the base including a first end wall with

[ What is claimed is:] [1.] A noise reduction hood for an electronic system enclosure, the enclosure having an aperture that is adapted to receive air therethrough, the hood comprising:a base that is constructed and arranged to be supported on the enclosure, the base including a first end wall with an inlet, a second end wall with an outlet and a side wall connecting the first and second end walls, the base having an air duct that is adapted to pass air therethrough in a first direction substantially perpendicular to the first and second end walls from the inlet to the outlet, the inlet adapted to be positioned adjacent the aperture when the base is supported on the enclosure, the base having a height extending in the first direction, the first end wall being spaced from the second end wall by the height of the base; andat least one noise reduction panel mounted on the base between the first and second end walls, the at least one noise reduction panel extending across the air duct to form a plurality of acoustical flow passages extending through the base along axes that are parallel to the first direction, the at least one noise reduction panel having a length in the first direction that is substantially equal to the height of the base, the air to be passed through the acoustical flow passages to attenuate acoustic noise emanating from the enclosure.