The operating principle of superconducting magnetic bearings is the pinning of magnetic flux lines in the superconductor material. This intrinsic property creates a stable levitation with repulsive and attractive forces and does not require any energy supply or control electronics. However, the so-called high-temperature superconductors must also be cooled to their working temperature of 77 K.
Until now, high-temperature superconductors have been cooled with liquid nitrogen, which was carried in a reservoir in the cryostat. Depending on the thermal losses and the size of the reservoir, the cryostats had to be filled with liquid nitrogen in cycles of 6 - 20 hours.
evico now replaces the reservoir with a continuously operating refrigeration machine. With this development plug&play applications for industrial environments can be realized. The cryocooler with an input power of max. 80 W is sufficient to operate in ambient temperatures of up to 35°C.
|Airgap||5 mm||3 mm|
|Vertikal stiffness||12 N/mm||21 N/mm|
|Lateral stiffness||4 N/mm||6,3 N/mm|
|Superconductor area||261 mm^2|
|Liftpower at 67 K||1,6 W|
|Min. temperature||60 K|
|Power consumption||60 W|
|Dimemsions||xxx x xxx x xxx mm|
|Ambient temperature||0 - 35 °C|