| 摘要 |
The sound silencer consists of a damping chamber (4) of barrel shape with open floors which is made of noise absorptive material and radial fins (9) and is mounted on the motor. In the damping chambers (4) there is a coaxially arranged closing nozzle (2) of conical shape, which is built-up to the outflow nozzle of the (1) motor, and around the perimeter of its cover the closing nozzle (2) has a row of oblong slotted outflows (3), whose longitudinal axes are skewed from the longitudinal axes of the damping chambers (4). At the end of the damping chamber (4) on the outer perimeter of the output end there are blades (5) which built up further atmospheric air in the output flow from the damping chamber motor. For higher effectiveness of the sound silencer the closing nozzle (2) is set on a bearing (8) turning on the longitudinal axis of the damping chambers (4). For reduction of the outpouring turbulent flow the damping chamber (4), on its output end, is equipped with a flow stabiliser (6), formed by tubular sections, a honeycomb or grill.<IMAGE>
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