Patent ID: 8833383
Filing Date: 2014-09-16
Classification: F16K,Y10T

Abstract:
1. A multi-vane throttling valve for a vacuum process chamber, the valve comprising: a throttle chamber body having an inside exposed to the vacuum process chamber and an outside exposed to atmospheric pressure, the chamber body defining a through-opening for controlling vacuum within the vacuum process chamber; a plurality of rotatable vanes mounted within the through-opening for controlling a flow of gases through the through-opening wherein each rotatable vane includes a proximal support, a distal support and a cooling fluid pathway that extends through at least one of the proximal support or the distal support, the cooling fluid pathway being in fluid communication with and disposed longitudinally along each rotatable vane wherein the cooling fluid pathway of each rotatable vane extends outside of the throttle chamber body and into a rotary adapter having a coolant supply port and a coolant return port and wherein the at least one of the proximal support or the distal support is rotatably coupled to the rotary adapter, each rotary adapter being exposed to atmospheric pressure and the cooling fluid pathway of each rotatable vane being in fluid communication with an adjacent rotatable vane through the coolant supply port and the coolant return port of the rotary adapter; and a drive mechanism disposed on and connected to an outside of the throttle chamber body for rotating the plurality of rotatable vanes to vary the flow of process gases, the drive mechanism capable of simultaneously rotating a rotating arm fixedly connected to each proximal support of the plurality of rotatable vanes.