Linear drive and piston pump arrangement

摘要

A linear drive, in particular for a piston pump, includes a first electromagnetic drive device, a second electromagnetic drive device, and a drive piston configured to be moved in an axial direction by the drive devices. The first drive device and the second drive device are each in the form of a reluctance drive device. The reluctance drive devices each have a stator with a stator coil that engages around the drive piston in a circumferential direction. The reluctance drive devices each also have a coil core with a coil receptacle, open in a radial direction toward the drive piston, for the coil winding. A piston pump arrangement includes the linear drive.

主权项

1. A linear drive, comprising:
a first electromagnetic drive device; a second electromagnetic drive device; and a drive piston including an armature carrier formed of a non-magnetic or magnetically passive material, the armature carrier having armature elements fastened thereto, the armature elements being spaced apart from each other along the armature carrier, the armature elements along with the drive piston and the armature carrier being configured to be moved in a first axial direction by the first drive device and a second axial direction by the second drive device, wherein the first drive device and the second drive device are each in the form of a reluctance drive device, and wherein each of the reluctance drive devices has (i) a stator with a coil winding, the coil winding engaging around the armature carrier of the drive piston in a circumferential direction, and (ii) a coil core which has a coil receptacle, open in a radial direction toward the armature carrier of the drive piston, for the coil winding, wherein the coil core of each of the reluctance drive devices is assigned a respective one of the armature elements arranged on the armature carrier of the drive piston, wherein each of the coil cores has two free ends, and wherein each of the armature elements has two armature arms which, in the radial direction, face the two free ends of the respective coil core to which the armature element is assigned.