초록 ▼

A continuous control valve is disclosed which comprises a casing having a cylindrical cavity therein with two pairs of ports extending therethrough. Each port has a preferably square opening communicating with the cavity. A cylindrical valve slide is movable both axially and rotatably in the casing

A continuous control valve is disclosed which comprises a casing having a cylindrical cavity therein with two pairs of ports extending therethrough. Each port has a preferably square opening communicating with the cavity. A cylindrical valve slide is movable both axially and rotatably in the casing cavity. The valve slide includes a pair of rectangular cross section grooves which have control edges movable with respect to limiting edges of the port openings to vary the cross sectional area of the port openings opening into the groove. Each groove is shallow in the vicinity of inlet and outlet port openings and deeper in the vicinity of additional port openings in the casing. The cylindrical valve is movable either axially or rotationally in a controlled direction to vary the cross-sectional area of the passages and also movable into a selected position to establish a selected overlap between the control edges of the valve slide and the limiting edges of the port openings.

대표청구항 ▼

A continuous control valve comprising: a casing having a valve slide cavity and a plurality of ports each with an opening communicating with said cavity, each port opening bounded by a plurality of limiting edges, at least one of said ports comprising an inlet port, at least one of said ports compri

A continuous control valve comprising: a casing having a valve slide cavity and a plurality of ports each with an opening communicating with said cavity, each port opening bounded by a plurality of limiting edges, at least one of said ports comprising an inlet port, at least one of said ports comprising an outlet port and at least one of said ports comprising an additional port extending in said casing; a valve slide movable in said cavity in a control direction to vary a flow passage cross-sectional area in each port opening, said slide having a plurality of grooves each with a rectangular cross-section in a plane transverse to a plane containing said control direction, a plurality of control edges transverse to said control direction and a plurality of connecting edges connecting ends of said control edges, said slide movable in said control direction to move said control edges with respect to at least some of said limiting edges; said slide positionable in said cavity at a selected position in a direction transverse to said control direction to establish a selected amount of overlap between said control edges and said at least some limiting edges; each groove being shallow in the vicinity of said inlet and said outlet port openings and deeper in the vicinity of openings of said additional port, each groove having a groove surface extending at an acute angle (a