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专利名称：Method for controlling the drive motor of a
positive displacement vaccum pump
发明人：Michael Holzemer,Frank Schonborn,Karl-Heinz Ronthaler
申请号：US10580128申请日：20041105
公开号：US20070071610A1公开日：20070329
专利附图：
摘要：Method for controlling a drive motor of a positive displacement vacuum pumpA method for controlling a drive motor of a positive displacement vacuum pump
comprises the following method steps: storing a curve () indicating a respective speedvalue n of the drive motor for inlet pressure values p, wherein the curve () comprises: anupper range () for inlet pressure values p larger than or equal to an upper limit pressurep, with a single constant upper speed value nbeing associated with said upper range (),and an alteration range () for inlet pressure values p smaller than the upper limitpressure p, wherein in the alteration range different speed values nare associated withthe inlet pressure values p; determining the inlet pressure value p; determining thespeed n associated with the inlet pressure value p in the curve (); and operating the drivemotor () at the determined speed n. By providing an alteration range the vacuum pumpcan always be operated at a speed which allows maximum effective suction capacity ofthe positive displacement pump.
申请人：Michael Holzemer,Frank Schonborn,Karl-Heinz Ronthaler
地址：Bergheim DE,Mainweg DE,Zulpich DE
国籍：DE,DE,DE
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