Electromagnetic pressure control valve for incompressible media

Claim 2

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, and housing means for the coil and casing means, characterized in that the armature means comprises a ring-shaped provided on the armature support means, said ring-shaped armature is attracted axially into the gap with a more or less large force depending on the coil energization, and in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means.

Claim 3

A valve according to claim 1, characterized in the armature support means consists of the same material as the housing means.

Claim 4

A valve according to claim 1, characterized in that armature means is secured to the armature support means.

Claim 5

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, and in that the armature means is subdivided into ring segments.

Claim 6

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, and in that the armature means is subdivided into ring segments.

Claim 7

A valve according to claim 1, characterized in that the valve is used in an automatically shifted motor vehicle transmission.

Claim 8

A valve according to claim 1, characterized in that the valve closure means is acted upon by a force dependent on the magnitude of a torque.

Claim 9

A valve according to claim 1, characterized in that the pole shoe means are substantially cylindrical and in that the magnet gap is ring-shaped and enclosed between said pole shoe means.

Claim 10

A valve according to claim 1, characterized in that the armature support means is arranged concentrically on the inside of the energizing coil.

Claim 11

A valve according to claim 1, characterized in that the armature support includes a shield-like portion supporting thereon the ring-shaped armature means.

Claim 12

A valve according to claim 1, characterized in that the housing means and armature support means essentially consist of aluminum.

Claim 13

A valve according to claim 10, characterized in that at least the armature support means is constructed as pressure casting.

Claim 14

A valve according to claimm 10, characterized in that at least the armature support means is constructed as extrusion-molded part.

Claim 15

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, said housing means and said armature support means essentially consist of aluminum, and in that the armature means is riveted to the armature support means and in that rivet shanks are formed-on at the armature support means.

Claim 16

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, said housing means and said armature support means essentially consist of aluminum, and in that the armature means is riveted to the armature support means and in that rivet shanks are formed-on at the armature support means.

Claim 17

A valve according to claim 1, characterized in that the electromagnetic part is shielded from the valve part by a partition wall through which extends with slight play an at least partially prismatically constructed valve closure means.

Claim 18

A valve according to claim 14, characterized in that a filter disk means sealingly secured in the valve housing means is arranged between the valve part and the magnet part.

Claim 19

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, the electromagnetic part is shielded from the valve part by a partition wall through which extends with slight play an at least partially prismatically constructed valve closure means, a filter disk means sealingly secured in the valve housing means is arranged between the valve part and the magnet part, and in that a magnetic separator is arranged in the inlet of the valve.

Claim 20

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energized solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, the electromagnetic part is shielded from the valve part by a partition wall through which extends with slight play an at least partially prismatically constructed valve closure means, a filter disk means sealingly secured in the valve housing means is arranged between the valve part and the magnet part, and in that a magnetic separator is arranged in the inlet of the valve.

Claim 21

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energizing solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, the electromagnetic part is shielded from the valve part by a partition wall through which extends with slight play an at least partially prismatically constructed valve closure means, and in that liquid-tight diphragm means are sealing arranged axially on both sides of the magnet part of the valve and in that the two spaces enclosed by the diaphragm means and the valve housing means are located axially outside the magnet part of the valve and are in operative commmunication with each other, and in that the magnet part of the valve enclosed by the two diaphragm means and the valve housing means is filled out substantially completely with a liquid having a low viscosity and a low coefficient of thermal expansion.

Claim 22

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control valve being constructed as an electrically energizing solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, the electromagnetic part is shielded from the valve part by a partition wall through which extends with slight play an at least partially prismatically constructed valve closure means, and in that liquid-tight diphragm means are sealing arranged axially on both sides of the magnet part of the valve and in that the two spaces enclosed by the diaphragm means and the valve housing means are located axially outside the magnet part of the valve and are in operative commmunication with each other, and in that the magnet part of the valve enclosed by the two diaphragm means and the valve housing means is filled out substantially completely with a liquid having a low viscosity and a low coefficient of thermal expansion.

Claim 23

A valve according to claim 17, characterized in that the two spaces are in communication with each other by way of a bore on the inside of the shank portion of the armature support means.

Claim 24

A valve according to claim 18, characterized in that the shank portion of the armature support means extends sealingly through the diaphragm means.

Claim 25

A valve according to claim 19, characterized in that a magnetic separator is arranged in the inlet of the valve.

Claim 26

A valve according to claim 20, characterized in that a filter disk means sealingly secured in the valve housing means is arranged between the valve part and the magnet part.

Claim 27

A valve according to claim 17, characterized in that the housing means and armature support means essentially consist of aluminum.

Claim 28

A valve according to claim 17, characterized in that the armature means is subdivided into ring segments.

Claim 29

A valve according to claim 17, characterized in that the pole shoe means are substantially cylindrical and enclose therebetween a ring-shaped magnetic gap.

Claim 30

A valve according to claim 17, characterized in that the armature support means is arranged concentrically on the inside of the energizing coil.

Claim 31

A valve according to claim 17, characterized in that the armature support means includes a shield-like portion supporting thereon the armature means.

Claim 32

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control being constructed as an electrically solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, and in that the armature means is riveted to the armature support means and in that rivet shanks are formed-on at the armature support means.

Claim 33

A pressure control valve for an incompressible medium in which the medium is conducted through a valve gap formed by a valve seat means and a valve closure means, and in which the valve closure means is acted upon by a force dependent on a control magnitude, the control being constructed as an electrically solenoid valve including an energizing coil, a magnet armature means operatively connected with the valve closure means and an armature support means for the armature means, a predetermined force produced by a force storage means acting on the valve closure means in the de-energized condition of the coil, said force being variable by energization of the coil in dependence on the control magnitude, magnetic casing means surrounding the energizing coil and terminating in two substantially concentrically disposed pole shoe means enclosing therebetween a magnet gap, the armature means being attracted axially into said gap with a more or less large force depending on the coil energization, and housing means for the coil and casing means, characterized in that the armature support means consists of a material whose coefficient of thermal expansion at least approximately corresponds to that of the material of the housing means receiving the coil and magnetic casing means, and in that the armature means is riveted to the armature support means and in that rivet shanks are formed-on at the armature support means.