Patent ID: 7591448
Filing Date: 2009-09-22
Classification: F15B,Y10T

Abstract:
1. A hydraulic control valve system comprising a hydraulic valve block with a plurality of control valve segments arranged in a juxtaposed manner, each control valve segment comprising a first line, a second line, and a displaceable valve rod adapted to open and close the first line, respectively close and open the second line to varying degrees depending on a position of the valve rod, the valve system further comprising a plurality of actuators arranged in a juxtaposed manner, one actuator for each valve segment, each actuator comprising an electrical motor mechanically coupled to a respective said valve rod through a coupling mechanism, each motor having a rotor and a stator, the stator comprising a plurality of coils arranged around the circumference of the rotor, whereby a ratio DS/HS, DS′/HS′, DS″/HS″, DS′″/HS′″ of an average diameter DS, DS′, DS″, DS ′″ of a virtual circle through mid-points of said coils of the stator divided by an overall height HS, HS′, HS″, HS′″ of said coils in a direction parallel to an axis of rotation of the rotor is greater than 1.6.