US 12,246,269 B2
Separating element, separating device, filter element, filter housing, filter device, and method for separating gas bubbles from a liquid
Andras Veres, Heidelberg (DE)
Assigned to ARGO-HYTOS Group AG, Baar (CH)
Appl. No. 17/430,258
Filed by ARGO-HYTOS Group AG, Baar (CH)
PCT Filed Feb. 11, 2020, PCT No. PCT/EP2020/053433
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/165146, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 102019103508.2 (DE), filed on Feb. 12, 2019.
Prior Publication US 2022/0134255 A1, May 5, 2022
Int. Cl. B01D 19/00 (2006.01)
CPC B01D 19/0031 (2013.01) [B01D 19/0042 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A filter device comprising:
at least one filter element configured to clean hydraulic oil, the at least one filter element having an inlet side, an outlet side, and at least one filter housing, wherein at least one filter layer configured to filter solids present in the hydraulic oil is arranged between the inlet side and the outlet side, wherein the filter device includes a separating unit configured to separate gas bubbles from the hydraulic oil,
at least one separating element mounted on one of (i) the at least one filter element, (ii) the filter housing or (iii) both, wherein the separating element separates gas bubbles from the hydraulic oil and includes,
a volume body with an open-pored material structure having a plurality of cells offset with respect to one another such that a plurality of flow paths for guiding the gas bubbles through the material structure flow in a three-dimensional arrangement to facilitate coalescence of individual gas bubbles, and
a contact region included in the material structure, wherein at least two of the flow paths approach one another in the contact region at least in sections so that, in operation, the guided gas bubbles on the flow paths contact one another to join together to form larger gas bubbles, wherein the filter housing and the separating element are of cylindrical shape, and wherein the separating element is arranged downstream of the filter element as viewed in a longitudinal directions.