RAPID HEATING AND COOLING FURNACE

摘要

The invention includes a furnace having a rapid heating and cooling cycle. The rapid heating is achieved by any suitable process, such as induction heating. The cooling is achieved by recirculating a working fluid through a heat exchanger that is outside the furnace. The working fluid is moved using a high-vacuum compatible impellor assembly having a vacuum sealed housing and a motor outside the housing. A ferrofluidic feed-through transfers torque from the motor to the fan while maintaining the hermetic seal.