公开(公告)号：US11801461B2

公开(公告)日：2023-10-31

申请号：US16099472

申请日：2017-05-03

Applicant: HYDAC FILTER SYSTEMS GMBH

Inventor： Dominic Schneider ,  Nils Schubert ,  Andreas Schunk

IPC: B01D29/21 ,  B01D29/11 ,  B01D46/52 ,  B01D27/06 ,  B01D29/54

CPC classification number: B01D29/21 ,  B01D27/06 ,  B01D29/111 ,  B01D29/54 ,  B01D46/521 ,  B01D46/523 ,  B01D2201/127 ,  B01D2201/188 ,  B01D2201/293

Abstract: A filter element has a pleated filter mat (3). The terminal axial ends (7, 8) of the mat are connected to end caps (9, 11). The mat has a main structural layer (15) having filtering properties and a first additional structural layer and a second additional structural layer (17,19). The surface area of each of the additional structural layers (17, 19) is smaller than the surface area of the main structural layer (15). The axial ends (12, 14) of one additional structural layer (17) is located at an axial distance from the axial ends (16, 18) of the other additional structural layer (19) on the filter mat (3).

公开(公告)号：US10653981B2

公开(公告)日：2020-05-19

申请号：US16378786

申请日：2019-04-09

Applicant: HYDAC FILTER SYSTEMS GMBH

Inventor： Andreas Schunk ,  Dominic Schneider

IPC: B01D27/00 ,  B01D29/33 ,  B01D46/24 ,  B01D46/52 ,  B01D29/23 ,  B01D35/00 ,  B01D39/00

Abstract: A filter element for fluids, in particular for hydraulic fluid, has a foldable filter casing (10) with at least one filter layer (18, 20, 22, 24) extending between two end caps (26, 32). To vary in regions the thickness of the filter casing (10), the height (h1) of each filter fold (12, 44) increases from one end cap (26) to the other end cap (32). Alternatively, with the filter fold height (h1) being maintained, the outer diameter (40) of the filter casing (10) varies in the direction of one of the end caps (26, 32).

公开(公告)号：US11369898B2

公开(公告)日：2022-06-28

申请号：US16343441

申请日：2017-10-11

Applicant: HYDAC FILTER SYSTEMS GMBH

Inventor： Martin Hegmann ,  Andreas Schunk

IPC: B01D29/21 ,  B01D29/11 ,  B01D29/23 ,  B01D29/58 ,  B01D39/18 ,  B01D35/00 ,  B01D36/00 ,  B01D39/16

Abstract: A filter element (3) is designed as a replacement element and has filter medium (59) formed as a hollow body and extending between two closure parts in the form of end caps (13, 19). The filter medium is pleated with individual filter folds (66), and includes a filter material (61) made of cellulose.

公开(公告)号：US11617971B2

公开(公告)日：2023-04-04

申请号：US17406382

申请日：2021-08-19

Applicant: HYDAC FILTER SYSTEMS GMBH

Inventor： Andreas Schunk ,  Martin Hegmann

IPC: B01D19/00 ,  C01B3/00

Abstract: A method for degassing flowable fluids, in particular liquids used for hydrogen storage, uses a device including a desorber (12) that can be filled with fluid to be degassed and through which the fluid can flow. A circulation pump (48) circulates the fluid during a degassing process in the desorber (12). A vacuum pump (38) generates a vacuum in the desorber (12) during a filling step with fluid and for discharging the gas from the desorber (12) during the degassing step. At least one sensor (44a, 44b) measures the pressure in the desorber (12) and/or a dwell time. A control unit ends the degassing process when a predefined pressure is measured by the sensor (44a, 44b) and/or when a predefined dwell time of the fluid in the desorber (12) is measured.