公开(公告)号：US20250128191A1

公开(公告)日：2025-04-24

申请号：US18689164

申请日：2022-08-01

Applicant: HYDAC Process Technology GmbH

Inventor： Hans-Jürgen Lingen ,  Raphael Klein ,  Sebastian Hrin

IPC: B01D29/66 ,  B01D35/16

Abstract: A filter device is disclosed comprising a filter which is used to clean a fluid flow of particulate contamination in a specifiable flow direction, having a fluid inlet for supplying an unfiltered medium flow, a fluid outlet for removing a filtrate flow, and a discharge opening for discharging a backflushing fluid produced while backflushing the filter against the specifiable flow direction using a backflushing device, wherein as the particulate contamination being cleaned out of the fluid flow by the filter increases, the differential pressure between the fluid inlet and the fluid outlet increases, characterised in that a valve device is arranged downstream of the discharge opening, viewed in the fluid flow direction, said valve device regulating the discharge rate of backflushing fluid as a function of the differential pressure.

公开(公告)号：US11266928B2

公开(公告)日：2022-03-08

申请号：US16339041

申请日：2017-10-09

Applicant: HYDAC PROCESS TECHNOLOGY GMBH

Inventor： Hans-Juergen Lingen ,  Stefan Klein ,  Raphael Klein ,  Markus Breinig

IPC: B01D29/54 ,  B01D29/23 ,  B01D29/68 ,  B01D29/58 ,  B01D29/94 ,  B01D35/00 ,  B01D35/147

Abstract: A filter device, in particular for lubricating oil filtration, includes at least two filter inserts (27), in each of which a filter material (43) is accommodated. The filter inserts are provided with fluid passage points (37, 39) and can be stacked on top of one another with the formation of a stack. A back-flushing device (55,57) is movably arranged along the inner side of the filter inserts (27). The individual filter inserts (27) are designed as identical parts at least with respect to their housings.

公开(公告)号：US10981092B2

公开(公告)日：2021-04-20

申请号：US16478893

申请日：2018-02-27

Applicant: HYDAC PROCESS TECHNOLOGY GMBH

Inventor： Hans-Juergen Lingen ,  Stefan Klein ,  Raphael Klein ,  Sebastian Hrin

IPC: B01D29/68 ,  B01D29/23 ,  B01D29/52

Abstract: The invention relates to a filter device, in particular for filtering lubrication, consisting of at least one filter insert (19), in which a respective filter material (27) is received and which is provided with fluid passage points (70) that are delimited by wall parts (63) of the filter insert (19) and with a backflush device (37, 49) that has at least one flush nozzle (49), said flush nozzle being movable along the interior of the respective pairable filter insert (19) by means of a hollow drive shaft (37). The invention is characterized in that at least one pair of flush nozzles (49) is provided for each filter insert (19, 21), said flush nozzles having longitudinal slots (73, 74) which are arranged one over the other in the axial direction of the drive shaft (37), wherein the longitudinal slots have an offset relative to one another which runs transversely to the axial direction such that for adjacent flush nozzles (49), at least one part of the longitudinal slot (73) of one flush nozzle (49) overlaps with at least one of the fluid passage points (70) of the pairable filter insert (19, 21) and at least one part of the longitudinal slot (74) of the other flush nozzle (49) at least partly overlaps with the wall parts (63) which delimit the aforementioned fluid passage point of the filter insert (19, 21).