US 11,982,365 B2
Valve and method for controlling a flow medium using the valve
Lukas Kuhn, Oberreichenbach (DE); and Horst Hartmann, Aurachtal (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 18/010,447
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Jun. 22, 2021, PCT No. PCT/DE2021/100529
§ 371(c)(1), (2) Date Dec. 14, 2022,
PCT Pub. No. WO2022/002305, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 10 2020 116 993.0 (DE), filed on Jun. 29, 2020.
Prior Publication US 2023/0313894 A1, Oct. 5, 2023
Int. Cl. F16K 15/02 (2006.01); F16K 27/02 (2006.01)
CPC F16K 15/025 (2013.01) [F16K 27/0209 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A valve comprising a valve housing and a piston, wherein
the piston is seated in the valve housing and displaceable along a valve axis of the valve from a first switching mode of the valve into a second switching mode of the valve and from a second switching mode into a third switching mode of the valve,
the valve housing has, on an end face, a first opening with a first opening cross-section and at least one second opening with a closing edge, wherein the closing edge is formed on a border delimiting the second opening,
the piston has a first piston stage with a first piston surface pointing towards the end face and with a first lateral surface,
the piston has a second piston stage with a control edge pointing towards the end face and with a second lateral surface,
the first piston surface covers the opening cross-section of the first opening in the first switching mode,
the piston rests in sealing contact with a valve seat of the valve housing in the first switching mode,
the second opening is closed in the first switching mode and in the second switching mode by a second lateral surface of the second piston stage, wherein the control edge is axially movably positioned between the closing edge and the valve seat in the valve housing in the first switching mode and in the second switching mode,
a free second opening cross-section of the second opening delimited by the control edge and the closing edge is released in the third switching mode in such a way that a flow chamber is formed, which permeably connects the first opening cross-section of the first opening and the second opening and is delimited by the valve housing and the piston surfaces.