发明申请
US20050260085A1 Dry-running reciprocating vacuum pump 审中-公开
干式往复式真空泵

Dry-running reciprocating vacuum pump
摘要:
A dry-running reciprocating vacuum pump includes at least one pump stage located in the housing and including a cylinder having at least one gas inlet, a gas outlet, and a piston reciprocating in the cylinder and controlling the at least one inlet, a drive system for driving the piston-driving shaft, which is connected by a crank gear mechanism with the piston, and including a plurality of permanent magnets arranged on the shaft and stationary electrical coils surrounding the permanent magnets for producing a rotatable magnetic field, and a control electronics located in the pump housing for operating the coils.
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