KOCHETOV PLATE-TYPE NOISE SUPPRESSOR WITH UNIFIED PLATES Russian patent published in 2010 - IPC F01N1/24 F04C29/06 F24F13/24 

FIELD: machine building.

SUBSTANCE: noise suppressor is designed for damping noise. The noise suppressor consists of a case of rectangular cross section rigidly tied with end inlet and outlet branches and of noise absorbing plates. The noise absorbing plates are arranged in the case at a certain step, forming flat channels in the case. Each noise absorbing plate contains perforated walls. A noise absorbing profiled layer is inserted between the walls; depending on density, the layer is either made as a solid element, for example by sintering or pressure moulding, or is composed out of two noise absorbing profiled layers. Each of these profiled layers is produced by alternating semi-spherical surfaces or surfaces of part of sphere so, as to facilitate alternation of continuous and air intervals between the perforated wall and the layer of noise absorbing material. Also the noise absorbing profiled layer at one perforated wall is a mirror reflection of the profiled layer at another perforated wall relative to symmetry line 0-0 of the continuous profiled layer. The layers merge to ensure location of a recess of one layer opposite to the recess of another and a projection of one layer opposite to projection of another.

EFFECT: increased efficiency of noise suppressing.

3 dwg