US 12,392,422 B2
Valve having a position sensing means
Kersten Grosse, Ingelfingen (DE); Michael Tischmacher, Ingelfingen (DE); Sagar Agarwal, Ingelfingen (DE); Marc Cöster, Ingelfingen (DE); and Martin Luschtinetz, Ingelfingen (DE)
Assigned to BUERKERT WERKE GMBH & CO. KG, (DE)
Filed by Buerkert Werke Gmbh & Co. KG, Ingelfingen (DE)
Filed on Jul. 14, 2022, as Appl. No. 17/865,251.
Claims priority of application No. 10 2021 118 302.2 (DE), filed on Jul. 15, 2021.
Prior Publication US 2023/0013016 A1, Jan. 19, 2023
Int. Cl. F16K 37/00 (2006.01)
CPC F16K 37/0033 (2013.01) 10 Claims
OG exemplary drawing
 
1. A valve having a position sensing means comprising at least one Hall sensor and a signal transmitter, wherein the Hall sensor is structured so as to comprise at least two partial sensors which sense magnetic field components in a first measuring direction and in a second measuring direction orthogonal thereto,
wherein the two measuring directions lie in a plane of a measurement zone of the Hall sensor, wherein the Hall sensor extends farther in the two measuring directions than the Hall sensor extends perpendicular thereto, and wherein the signal transmitter is an axially polarized magnet, generating a magnetic field rotationally symmetrical about an axis of movement, which is arranged on a valve tappet linearly displaceable along the axis of movement such that poles thereof lie in the axis of movement, wherein
the axis of movement runs parallel to the first measuring direction and at a distance from the measurement zone along a surface normal of the measurement zone,
wherein an imaginary centerline is defined on the measurement zone through a center of the measurement zone and along the first measuring direction,
wherein the axis of movement is arranged at a distance from the imaginary centerline along the second measuring direction,
wherein the plane of the measuring zone does not intersect the signal transmitter, and
wherein an offset of the axis of movement with respect to the imaginary centerline along the second measuring direction is a factor of 0.3 to 0.5 of a diameter of the signal transmitter perpendicular to the axis of movement.