FIELD: engines and pumps.
SUBSTANCE: there is a fairing in fan that is equipped with rigid acoustically impermeable panel with C width that is adjacent to internal end surface of suppressor body, and its inlet openings are oriented along with air flow direction into suction nozzle of fan and are located on end surface of suppressor body on both sides from rigid acoustically impermeable panel, besides, sound absorbing material is located on rigid acoustically impermeable panel and is covered with acoustically and air permeable shell, at that fairing is equipped with plate that is longitudinally fixed on it with its one end in the area of suction nozzle of fan in the plane of its symmetry.
EFFECT: protection of premises against aerodynamic noise created by fan impeller at its suction hole.
6 cl, 4 dwg
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