SU730997A1

SU730997A1 - Noise silencer

Info

Publication number: SU730997A1
Application number: SU782673128A
Authority: SU
Inventors: Александр Львович Гарбуз; Валентина Вячеславовна Максимова
Original assignee: Предприятие П/Я Р-6109
Priority date: 1978-09-21
Filing date: 1978-09-21
Publication date: 1980-04-30

Description

версти в конусообразных экранах 9 и 10 имеют равный шаг, а их диаметры убывают от центра к периферии.Versts in conical screens 9 and 10 have an equal pitch, and their diameters decrease from the center to the periphery.

Поток газа иостуиает в глушитель через впускной патрубок И и, проход через лабиринтный канал между гильзой 1 и кожулом 7, выходит из глушител . При этом шум потока глушитс резонаторной частью и лабиринтным каналом глушител , стенки которого покрыты звукопоглошаюшим материалом . Настройка глушител на наиболее эффективное снижение шума осушествл етс перемешением штока 5 по стержню 4, при этом измен етс объем резонансной камеры.The gas flow and the exhaust into the muffler through the inlet pipe And and, the passage through the labyrinth channel between the sleeve 1 and the skin 7, comes out of the muffler. At the same time, the flow noise is silenced by the resonator part and the labyrinth channel of the silencer, the walls of which are covered with sound absorbing material. Adjusting the silencer to the most effective noise reduction is carried out by mixing rod 5 along rod 4, and the volume of the resonant chamber changes.

Таким образом, в результате обеспечени возможности настройки глушител на максимальное звукопоглощение частот, дл которых шум, генерируемый источником, вл етс преобладающим, а также благодар расширению диапазона звукопоглощаемых частот за счет изменени диаметра отверстий в перфорированных конусообразных экранах от центра к периферии и изменени толщины звукопоглощающего материала , расположенного за неподвижным экраном , создаетс возможность эффективного снижени дискретного шума высокой интенсивности в широком диапазоне частот.Thus, by allowing the silencer to be tuned for maximum sound absorption for which the noise generated by the source is predominant, as well as by widening the range of sound-absorbing frequencies by changing the diameter of the holes in the perforated tapered screens from the center to the periphery and changing the thickness of the sound absorbing material located behind a fixed screen, it is possible to effectively reduce discrete high-intensity noise in a wide range e frequencies.

Claims

Invention Formula

1. A silencer containing a sleeve connected to the inlet pipe and placed with an annular and face gaps in the casing, which is rigidly connected to the pipe by means of a rod, is provided with a blind end wall and forms a labyrinth channel for the passage of gases with the sleeve, with the wall of the channel covered with soundproof material, characterized in that, in order to increase the efficiency and expansion of the noise dampening diaphragm, in the end gap between the casing and the sleeve, a perforated screen is installed on the rod, sevogo peremeschepi along the shaft.

2. A silencer according to claim 1, characterized in that the diameter of the perforation holes of the screen decreases from the center to the periphery.

3. Silencer on PP. 1 and 2, characterized in that the shield and the blind end of the casing wall are made in the form of cones, which point vertically to the inlet pipe 4. The muffler according to claims. 1-3, characterized in that the surface of the channel walls is wavy.

5. Silencer on PP. 1-4, different; and with the fact that the rod is equipped with an adjustable wior for fixing the axial position of the screen.

Sources of information taken into consideration and examination 1. Copyright certificate for application No. 2649479 / 25-06, cl. F 01N 1/10, 1978.

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