SU1366659A1 - Noise muffler - Google Patents

Abstract

The invention makes it possible to increase the efficiency of the silencer by reducing the frequency discrete components. The silencer has a separating element made in the form of two oppositely mounted rectangular plates 7, connecting the edges of the inlet and outlet openings 2, 3 and the inclined plate 8. The latter is installed by the hypotenuse of the rectangular plates 7 and connects the free edges of the openings 2 3. Partitions 4, 5 are installed perpendicular to the plates 7. The body 1 is made in the shape of a parallelepiped, and the rigidity of the elastic elements 6 is determined by a certain formula. The gas flow through the opening 2 enters the housing, where it is divided into two streams by means of a separating element. Both streams pass through the slots formed by the housing 1 and the plates 7, affecting the partitions 4 and 5 and transfer their wave energy to them. In the zone of the opening 3, the streams are connected and, through the latter, are emitted into the atmosphere. When adjusting the elastic elements, the correspondingly discrete frequency of the reduced noise coincides with the resonant frequency of the plates 7 and 8, and is effective. Noise silencing is maximum. 3 hp f-ly, 2 ill. (Oh (L

Description

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Claims (4)

Claim 1. A silencer comprising a housing with inlet and outlet openings and a movable partition installed in the housing, made in the form of a plate and provided with elastic elements made in the form of springs with adjustable stiffness connecting the partition with the housing, characterized in that, in order to increase efficiency by reducing discrete frequency components, it is equipped with an additional movable partition and a dividing element, the body is made in the form of a parallelepiped, the inlet and outlet openings are central rectangular and rectangular, the separation element is in the form of two mounted opposite parallel rectangular plates connecting the edges of the inlet and outlet openings, and an inclined plate installed by the hypotenuse of the rectangular plates and go connecting the free edges of the holes, and the movable partitions are installed perpendicular to the rectangular plates . 2. Silencer pop. 1, characterized in that the stiffness K of the elastic elements is determined by the formula K = 4'iT ² f ¹ m, where m is the surface mass of the plate, kg / m ² ; f - discrete frequency of noise reduction, Hz. 3 Silencer according to paragraphs. 1 and 2, characterized in that the elastic elements are made in the form of compression springs. 4. Silencer pop. 3, different. the fact that the compression spring is mounted on the screws with the possibility of axial movement. Compiled by V. Slavnikov Editor M. Tovtin Tehred L. Oliyink Proofreader V. Girnyak Order 6799/30 Circulation 492 Subscription VNIIIPI of the USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and printing company, Uzhhorod, st. Project, 4