NOZZLE OF PNEUMATIC DEVICE Russian patent published in 2007 - IPC F01N1/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to nozzle of pneumatic device used for discharge of gas jet under head. Proposed nozzle of pneumatic contains housing whose space is filled with sound-absorbing material, intake union, head installed in housing to form exhaust ring clearance with possibility of its adjustment in width, and round channels arranged over circumference concentrically relative to housing. Channels in head are made converging to side from intake union. Nozzle is provided with sound-absorbing member lined over entire surface with acoustically transparent material. Used as sound-absorbing material to fill space of housing is mineral wool on basalt base, type ROCKWOOL, or mineral wool type URSA, or basalt wool or glass wool lined with glass felt or foamed polymer, for instance, polyethylene or polypropylene.

EFFECT: increased efficiency of noise damping by of nozzle.

3 dwg