ISSN Online: 2377-424X
ISBN Print: 978-1-56700-474-8
ISBN Online: 978-1-56700-473-1
International Heat Transfer Conference 16
SUSPENSION AND WORKING PERFORMANCE OF THE HYDRODYNAMICALLY LEVITATED MICRO-PUMP FOR LIQUID COOLING SYSTEM
Abstrakt
Active liquid cooling system is urgently required for heat dissipation of high-power electronics. However, the key
part of the system, micro-pump, is still challenged by the bearing wear failure caused by mechanical friction. To solve this problem, we proposed a centrifugal micro-pump with the hydro-dynamically levitated bearing to make the rotor suspended without any mechanical friction. It is able to provide a 1.0 L/min flow rate and a 45 kPa pressure head at 20000 rpm, with an oversize of 23mm×23mm×25mm (length×width×height). Experiments were
conducted to test both the axial and radial suspension performance of the rotor. The results showed that the rotor
surrounded by working fluid is able to be stablely suspended under various working conditions. Therefore the reliability and lifetime of the micro-pump are heavily improved.
SCHLÜSSELWÖRTER:
Electronic equipment cooling, Thermal management, micro-pump, hydro-dynamically levitated, suspension, liquid cooling