SU898107A1 - Noise silencer - Google Patents

Description

(54) NOISE SILENT

I

This invention relates to a noise suppression technique and can be used in internal combustion engines.

Noise silencers are known, comprising a housing, an inlet and a vent nozzle and a hemispherical partition mounted in the housing, with the convex side facing the inlet nozzle and provided with openings whose axes intersect at the focus of the partition l. .

The purpose of the invention is to increase the efficiency of jamming noise.

In order to achieve this goal, in the proposed silencer, the flow areas of the inlet pipe, the baffles with openings and the outlet pipe are filled in successively increasing.

When this outlet is made movable in the axial direction.

The drawing shows a silencer, cut.

The silencer contains a cylindrical body 1, an inlet pipe 2 inserted into the bottom of the case I, a perforated hemispherical partition 3 installed in the bore of the case 1, with the convex side of the partition 3 facing the inlet pipe 2. The exhaust pipe 5 is screwed onto the cover 4 of the silencer on the thread fixed in a certain position by the lock-nut 6. The flow sections of the inlet pipe 2, the perforated partition wall 3 and the exhaust pipe 5 are made successively increasing.

When the engine is operating, the flow of exhaust gases through the inlet pipe 2 enters the muffler housing 1, expands, and vortices are formed in the annular space between the flow and the housing 1, which contributes to the loss of energy flow. Further flow

passes through the openings of the partition 3, is crushed into small trickles, which, converging in the focus of the hemisphere, quenching each other, mutually reduce the energy of the flow. After that through

exhaust pipe 5 gases are emitted into the atmosphere.

Thus, the flow of exhaust gas & 1X gas, prokod through the muffler and the encounter on the way multi-stage resistance to movement, loses a significant amount of energy, the more it reduces noise. Making the outlet nozzle movable in the axial direction allows adjustment of the silencer.

Claims (2)

Invention Formula . A silencer comprising a housing, an inlet and an outlet and a hemispherical partition mounted in the housing with a convex side facing the inlet and provided with openings whose beams intersect at the septum focus, characterized in that, in order to increase efficiency, the inlet ports The baffles with the holes and the outlet are made successively increasing. 2. The silencer according to claim 1, wherein the exhaust pipe is made movable in the axial direction. Sources of information taken into account in the examination one; Patent of Great Britain No. 10144499, cl. F 1 V, pub. 1965.