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    • 5. 发明公开
    • REDUCED NOISE SCREW MACHINES
    • GERÄUSCHREDUZIERTESCHRAUBMASCHINEN
    • EP2852763A1
    • 2015-04-01
    • EP13721025.8
    • 2013-04-03
    • The City University
    • STOSIC, Nikola Rudi
    • F04C18/16F01C1/16
    • F01C1/16F01C1/084F04C2/16F04C18/084F04C18/16F04C29/06F04C2250/301Y10T29/49242
    • A reduced noise screw expander is described, which comprises a main rotor and a gate rotor each having an ‘N’ profile. The rotors are designed so that the torque on the gate rotor caused by pressure forces is in the same direction as the torque on the gate rotor caused by frictional drag forces. A method of designing a screw machine exhibiting reduced noise is also described. The screw machine has two or more rotors having an ‘N’ profile, and the method involves determining a ratio r/r1, where r is the main rotor addendum and r1 is the radius of the rack round side, and ensuring that this ratio is greater than 1.1 where the screw machine is to be a screw compressor or less than or equal to 1.1 where the screw machine is to be a screw expander.
    • 描述了一种减噪螺旋式膨胀机,其包括主转子和门转子,每个具有“N”型。 转子被设计成使得由压力引起的门转子上的转矩与由摩擦阻力相关的门转子上的转矩相同。 还描述了一种设计出具有降低噪声的螺杆机的方法。 螺杆机具有两个以上具有“N”形轮廓的转子,该方法包括确定比率r / r1,其中r是主转子齿顶,r1是机架圆形的半径,并确保该比率为 大于1.1,其中螺旋机器为螺杆式压缩机或小于或等于1.1,螺杆机器为螺杆式膨胀机。