专利名称：METHOD FOR CONTROLLING THE DRIVE
MOTOR OF A POSITIVE-DISPLACEMENTVACUUM PUMP
发明人：HOELZEMER, MICHAEL,SCHOENBORN,
FRANK,RONTHALER, KARL-HEINZ
申请号：EP04818757.9申请日：20041105公开号：EP1697639B1公开日：20090318
摘要：The invention relates to a method for controlling the drive motor of a positive-displacement vacuum pump, comprising the following steps: storing a curve (32) thatindicates a speed value n of the drive motor for an input pressure value p, said curve (32)comprising: an upper range (34) for input pressure values p that are greater than orequal to an upper threshold pressure p1, with which a single constant upper speed valuen1 is associated, and a range of alteration (36) for input pressure values p smaller thanthe upper threshold pressure p1, wherein various speed values nv are associated with theinput pressure values p in the range of alteration: determining the input pressure value p,determining the speed n associated with the input pressure value p in the curve (32) andoperating the drive motor with the determined speed n. The inventive method whichprovides for a range of alteration allows operation of the positive displacement pump ata speed at which the effective displacement capacity of the displacement pump ismaximal.
申请人：LEYBOLD VACUUM GMBH,LEYBOLD VAKUUM GMBH,LEYBOLD VACUUM
GMBH
地址：DE
国籍：DE
代理机构：von Kreisler Selting Werner
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