Patent ID: 8931514
Filing Date: 2015-01-13
Classification: B60K,F02N,F15B,F16K,Y02T,Y10T

Abstract:
1. A liquid flow rate control valve comprising: a valve housing having an input port and an output port formed therein; a cylindrical sleeve fixed to an interior of the valve housing and having formed therein an outlet opening communicating with the output port, a cylindrical distributor relatively rotatably fitted into an inner periphery of the sleeve, driven to rotate by a first drive source, and having a communication hole group formed therein, a total area of overlap of the communication hole group with the outlet opening changing according to a rotational position of the cylindrical distributor; and a cylindrical rotor relatively rotatably fitted into an interior of the distributor, driven to rotate by a second drive source, having an interior space thereof connected to the input port, and having an inlet opening formed therein, a position at which the inlet opening communicates with overlapping sections of the outlet opening and the communication hole group changing in response to rotation of the cylindrical rotor; wherein the sleeve comprises first and second outlet openings having a central angle of 180°, having phases displaced from each other by 180°, and being spaced so as not to overlap one another in an axis direction, the distributor comprises first and second communication hole groups having a central angle of 180°, having phases displaced from each other by 180°, and being spaced so as not to overlap one another in the axis direction, and the rotor comprises two sets of first and second inlet openings having the same phase at positions with a phase difference of 180°.