Lubricating-Fluid Infusion Apparatus

摘要

Infusion apparatus for dispensing lubricating fluid into a dynamic-pressure bearing device. Apparatus is made up of: a lubricating-fluid tank whose interior is filled partway with lubricating fluid; a vacuum chamber for placing the bearing device under a reduced-pressure environment; a nozzle for streaming the lubricating fluid into the bearing device; and a vacuum-evacuation system for evacuating and repressurizing the interior of the lubricating-fluid tank and of the vacuum chamber. Air dissolved into the lubricating fluid is eliminated by pumping-down the hollow, fluid-absent portion of the lubricating-fluid tank. Then repressurizing the hollow portion enables pressure to be applied to the lubricating fluid to force it out through the nozzle tip. The vacuum chamber interior may be pumped down to the optimum pressure for charging the bearing device with the lubricating fluid.