US 12,442,467 B2
Double seat valve
Frank Leiter, Schwarzenbek (DE)
Assigned to GEA Tuchenhagen GmbH, Büchen (DE)
Appl. No. 18/569,140
Filed by GEA Tuchenhagen GmbH, Büchen (DE)
PCT Filed Jun. 9, 2022, PCT No. PCT/EP2022/065663
§ 371(c)(1), (2) Date Dec. 11, 2023,
PCT Pub. No. WO2022/258742, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 10 2021 003 018.4 (DE), filed on Jun. 11, 2021.
Prior Publication US 2024/0337329 A1, Oct. 10, 2024
Int. Cl. F16K 37/00 (2006.01); F16K 1/44 (2006.01); F16K 31/122 (2006.01)
CPC F16K 37/0041 (2013.01) [F16K 1/443 (2013.01); F16K 31/1225 (2013.01); F16K 2200/204 (2021.08)] 20 Claims
OG exemplary drawing
 
1. A double seat valve, comprising:
a first closure element that can be brought into sealing contact with a first valve seat;
a second closure element that can be brought into sealing contact with a second valve seat;
a sensor object coupled to the first closure element, wherein the sensor object comprises an oscillating electric circuit including a coil; and
a sensor apparatus that interacts with the sensor object, wherein the sensor apparatus comprises a sensor and an electronic evaluation unit, wherein a manipulator has portions with different magnetic properties and is inserted into the coil in a manner that influences a magnetic flux density depending on a position of at least one of the first closure element or the second closure element, and wherein the sensor apparatus is designed for verification of the interaction of the manipulator with the sensor object by a magnetic measurement.