초록 ▼

A fast-acting valve includes a valve body and a spool slidably mounted within the valve body between first and second limit positions. Both the spool and the valve body have a flow passage which come into alignment with the valve spool at a position intermediate the first and second limit positions

A fast-acting valve includes a valve body and a spool slidably mounted within the valve body between first and second limit positions. Both the spool and the valve body have a flow passage which come into alignment with the valve spool at a position intermediate the first and second limit positions and spaced therefrom by a given distance. That given distance allows the spool member to accelerate in travel from the first and second limit positions to the valve open position so that the opening of the valve (and closing) occurs quite quickly. Reciprocating movement of the valve spool relative to the valve body can be provided by springs mounted in opposing ends of the valve body bore in cooperation with solenoids mounted on opposing sides of the valve body. The fast-acting valve may be modified into the form of poppet valve or a cartridge valve.

대표청구항 ▼

[ I claim:] [1.] A fast-acting valve comprising:a valve body having an axial bore;a cylindrical valve spool slidably mounted in said bore for reciprocating movement in a linear path between a fully closed position at one side of said valve body and a fully open position at a side of said valve body

[ I claim:] [1.] A fast-acting valve comprising:a valve body having an axial bore;a cylindrical valve spool slidably mounted in said bore for reciprocating movement in a linear path between a fully closed position at one side of said valve body and a fully open position at a side of said valve body opposite said one side;at least one valve body fluid flow passage extending through said valve body between inlet and outlet ports and intersecting said bore;at least one valve spool fluid flow passage extending through said valve spool between openings at opposing locations in a cylindrical surface of said valve spool, said one valve body fluid flow passage being spaced from said one spool fluid flow passage with said valve spool in said fully closed position, to provide an acceleration zone through which said valve spool accelerates before said one spool fluid flow passage comes into fluid communication with said one valve body fluid flow passage and to provide a deceleration zone through which said valve spool is decelerated in advance of coming to rest in said fully open position, said acceleration zone having a length substantially longer than that required for sealing;first acceleration/deceleration means for accelerating said valve spool from fully closed position in travel through said acceleration zone toward said fully open position and for decelerating said valve spool in returning to said fully closed position;second acceleration/deceleration means for decelerating said valve spool in travel through said deceleration zone, approaching said fully open position and for accelerating said valve spool in leaving said fully open position; andmotive means for driving said valve spool with said reciprocating movement.