Development of Disaster Response Robot for Extreme Environments

-14th Report: Concept of Actuator Unit Using Liquid Submersion Cooling-

Abstract

This paper proposes a novel motor cooling method using direct-liquid cooling by immersing a heat source directly into coolant. Direct-liquid cooling is more effective than air cooling and indirect-liquid cooling because a heat source and coolant are in direct contact with each other. Further, if the shape of the shaft is designed to be able to perform heat transfer by forcibly circulating the coolant by the rotation of the motor itself, it will be possible to prevent the actuator unit from being enlarged.