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Medo Linear Piston Air Pumps
Mechanism Information
The Linear-Motor-Driven Free Piston System is not only ideal for upgrading existing systems, but can also be used for future design improvements. Compact, quiet and vibration free, the extremely reliable Free Piston Pump will enhance your system performance and extend its operating life. The Electro-magnet and return spring alternatively drive the piston inside the cylinder, the mechanical resonance of which is synchronized with the input current cycle. In a single mechanism, the piston combines the functions of two normally independent devices; a pump and a motor.
Self Cooling Design
Cool intake air passes through an opening over the coils to reduce and control the rise in internal temperature. As a result of this feature, it is possible to almost completely seal the unit, thus improving the suppression of internal operating noise.
Compact Integrated Design
This unique system enables the mechanical resonance of a single part. An incredible compact, lightweight design is achieved by combining what are entirely independent functions in conventional pumps (the motor and the compressor) into a superior, unified structure.
Hyper Pressure Control Mechanism
Should output pressure exceed the rated value, the piston will automatically adjust to a shorter stroke. Additionally, power consumption will automatically reduce, guarding against possible temperature overloads. A silicone diode in between the coils converts the full-wave input current into half-rectified current. In turn, this activates and deactivates the electro-magnet, producing a smooth mechanically resonating action.
Fewer Components
This uniquely simple and reliable design has no crankshafts, connecting rods, ball bearings, ect. typically found in conventional pump designs. Fewer parts mean fewer problems.
Operating Principle
A. The energized electro-magnet attracts the piston, compresses the return spring and draws air into the cylinder through the opened inlet valve.
B. When the electro-magnet is de-energized, the return spring pushes the piston back, forcing the compressed air out of the cylinder through the now opened valve.
The repeated actions of A and B above make the piston mechanically resonate, allowing it to function as either an air compressor or vacuum pump.
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