Medo
Pump Technology
The Linear-motor-driven Free Piston System (Pat.)
has an internal piston inside the cylinder which is driven by an
electro-magnet and spring system controlled by the alternating input
current cycle. The piston thus forms a single combined structure
of two usually different devices; motor and pump. The system is
quiet and vibration free, and offers the advantages of easy maintenance
and a long operating life.
Linear Pump Operating Principle
The activated electro-magnet attracts the piston
against the return spring, while air is taken into the cylinder
through the opened inlet valve.
When the electro-magnet is deactivated, the return
spring pushes the piston back, and the compressed air is brought
out of the cylinder through the now open outlet valve. The system
can function as either an air compressor or as a vacuum pump.
Fewer Components
The pump's unique and simple structure has no complicated
transmission mechanism such as a crankshaft, connecting rods, ball
bearings, etc., which are widely used in between the motor and compressor
in conventional pumps.
