Patent ID: 6962320
Filing Date: 2005-11-08
Classification: F16K,Y10S

Abstract:
1. A flow control device comprising: a wall part partitioning an upstream side and a downstream side of a flow passage for fluid; an aperture part formed on the wall part; a sheet shaped valve element which changes from closed state in which the sheet shaped valve element extends along the wall part to cover the aperture part to an open state in which the aperture part is opened; a valve element drive mechanism for moving the sheet shaped valve element; and a rolling element body provided in the valve element drive mechanism that performs a rolling motion along a wall face of the wall part, wherein the sheet shaped valve element is extended along the wall part to cover the aperture part by the rolling motion of the rolling element body in the closed direction and changed to a state in which the aperture part is opened from the extended state by the rolling motion of the rolling element body in the opened direction, and wherein the wall part is a cylindrical wall part having an inner side formed downstream and the rolling element body performs a planet motion along an outer wall face of the cylindrical wall part.