Fluid pressure generating device and operating method thereof

Abstract

Abstract PURPOSE:To prevent generation of noise and vibration by providing a rotary shaft forming in its circumferential surface a grooved part consisting of many grooves tilting with respect to a direction of the axial center, stationary cylindrical surface part arranged being opposed to the peripheral part of this grooved part with a narrow space, suction port of fluid and its delivery port. CONSTITUTION:A stationary circumferential surface part 10 is formed being opposed to a grooved part 4 on a rotary shaft forming many grooves 3, in the inside of a main unit 1. Now in a condition that a valve 7 is closed, when the rotary shaft 2 is rotated in the counterclockwise direction as viewed from the right side, a pressure of fluid is generated in groove space 11, supporting the rotary shaft 2 in its own weight by a dynamic pressure effect of fluid while allowing the fluid, while its pressure is gradually increased, to flow from the side of a reservoir part 9 toward the side of a delivery port 6 into the groove space 11 reaching a steady condition. Next the fluid, when the valve 7 is opened, is accumulated once in the reservoir part 9 from a suction port 5 via a communication hole 8, and next the fluid passes through the groove space 11 generating a flow of the fluid toward the delivery port 6.

Inventors

• 👤 Hiromi Ino
• 👤 展海 猪野

Bibliographic Details