US 2026/0168579 A1 · SWITCHING VALVE AND SWITCHING UNIT FOR SWITCHING AT LEAST TWO FLUID CHANNELS

Abstract

A switching valve includes a housing with valve openings configured to be connected to fluid channels and a piston movable in the housing to control fluid flow between the valve openings and the fluid channels. A first restoring spring subjects the piston to a restoring force. A switching unit moves the piston against the restoring force from a first switching position into a second switching position and back from the second switching position. The piston is held without an energy supply in both first and second switching positions. The switching unit has a base ring with alternating guide grooves and holding ribs and an actuator guided in the guide grooves that moves the piston and has first control surfaces. A switching ring is movable in the base ring and has second control surfaces complementary to the first control surfaces. A second restoring spring supports the switching ring at the actuator.

Claims20

Dependent claims

A switching valve for switching at least two fluid channels, the switching valve comprising:

a valve housing comprising at least two valve openings;
a piston arranged in the valve housing so as to be movable in an axial direction and configured to control a fluid flow between the at least two valve openings, wherein the at least two valve openings are configured to be connected in fluid communication to the at least two fluid channels;
a first restoring spring configured to subject the piston to a restoring force in the axial direction;
and
a switching unit configured to move the piston, against the restoring force, from at least one first switching position into at least one second switching position and to hold the piston in the at least one second switching position, wherein the switching unit is further configured to return the piston from the at least one second switching position into the at least one first switching position;
wherein the piston is held without a supply of energy in the at least one first switching position and in the at least one second switching position.

3 more elements

Dependencies are inferred from the claim text.

Switching valve and switching unit for switching at least two fluid channels

Life of this patent

Switching valve and switching unit for switching at least two fluid channels

Life of this patent

Abstract

Claims20