发明名称 SYSTEMS AND METHODS FOR INDUCTION MOTOR WINDAGE NOISE DAMPING
摘要 A rotor windage noise damping system for an induction motor cooling vent A duct having a duct airflow path has a proximal end opening in communication with the cooling vent and the distal end opening is for communication with ambient air. The duct includes a plurality of baffles. The baffles are oriented in a generally parallel mutually spaced symmetrical or asymmetrical array relative to each other and the duct airflow path. Dimensions for baffle array symmetry or asymmetry, parallel spacing, baffle thickness and baffle inset from one of the duct openings are chosen to restrict distance between adjacent baffles to less than a wavelength of windage noise at selected propagation frequencies, yet provide for sufficient cooling airflow through the duct. The duct may be tuned to dampen selected propagation frequencies by changing the baffle array.
申请公布号 WO2012115828(A2) 申请公布日期 2012.08.30
申请号 WO2012US25170 申请日期 2012.02.15
申请人 SIEMENS INDUSTRY, INC.;SINGHAL, SUMIT 发明人 SINGHAL, SUMIT
分类号 H02K5/20;E04F17/04 主分类号 H02K5/20
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