Patent ID: 6321774
Filing Date: 2001-11-27
Classification: F02K,F16K,G05D,Y10T

Abstract:
A motor-driven liquid flow control valve comprising:a valve housing having an inlet port, an outlet port and a flow channel therein communicating from said inlet port to said outlet port to selectively allow a liquid to flow from said inlet port through said flow channel to said outlet port;at least one slide bearing ring arranged in said valve housing coaxially with said outlet port;a slidable flow control sleeve arranged radially inside said at least one slide bearing ring in said valve housing coaxially with said outlet port along a first axis, wherein said flow control sleeve is interposed in said flow channel and is slidable along said first axis, and wherein said flow control sleeve comprises a sleeve wall having at least one flow control opening therein, which is selectively positionable in said flow channel to allow flow communication therethrough or positionable out of said flow channel and blocked by said at least one slide bearing ring to prevent flow communication therethrough by selectively sliding said control sleeve along said first axis;a drive chamber centrally arranged in said valve housing coaxially on said first axis;a drive motor including an output shaft; anda drive transmission that is arranged in said drive chamber, connected to said output shaft, and connected to said slidable flow control sleeve symmetrically about said first axis.