The SupraUnit consists of the ZEK DS superconductor cryostat, which has been completed by a virtual user interface and a robust housing to form a device that can be used independently. With robust mechanical and electrical interfaces, the device is also designed as an automation component. It is operated by means of a WLAN web interface via smartphone, tablet or PC, optionally via the Ethernet interface. The operating states "cooling", pre-cooling temperature reached" and "pinning temperature reached" are indicated by different colors of a light band.
We are grateful to now be able to offer this device, which is based on a Festo concept, to the market.
The operating principle of superconducting magnetic bearings is the pinning of magnetic vortices in the superconductor material. This intrinsic property creates a stable levitation state 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|