Patents by Inventor Ralf Wnuk

Ralf Wnuk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11801463
    Abstract: A filter apparatus (10) has a plurality of filter elements (20) in a filter housing (12) having a filter inlet (50) for a fluid to be filtered and a filter outlet (52) for the filtered fluid. A pressure control device (42) has at least one control plate (58) located inside a connection chamber (14). The control plate laterally passes over individual upper element openings (54) of the filter element to be backwashed (20), in a predefinable sequence, covering the opening to an increasing degree and then exposing the opening again. A discharge opening (46) of the backwash device (44) is, at least in part, fluidically connected to a lower element opening (56) of the filter element (20) to be backwashed, as the pressure control device (42) moves towards the upper element opening (54).
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: October 31, 2023
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Thomas Boettcher
  • Patent number: 11484819
    Abstract: A filter device for fluids has a filter housing (1), in which element receptacles (31) for a plurality of filter elements (33) are provided. The filter medium (35) of the filter elements (33) separates in the filter housing (1) a dirt side (5) from a clean side (7). The filter housing (1) can be opened for inserting and removing the filter elements (33). For the filter elements (33), a support basket (19) is provided, which can be inserted into the filter housing (1) and removed from the filter housing (1) and to which the filter elements (33) can be detachably fixed. The filter elements (33) have, in addition to the filter medium (35) for particle filtration, an adsorption medium (36).
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 1, 2022
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Hans-Josef Schmidt, Pascal Eric Vitte
  • Patent number: 11219847
    Abstract: A device for treating fluid, in particular a filter device, has first and second tubular elements (12), (14) forming an element assembly (10). One element (14) is accommodated in the other element (12) forming a flow chamber (33) between the two elements (12, 14), with a first element (12) arranged in the direction of the inflow side (29) of a fluid to be treated and a second element (14) arranged in the direction of the outflow side (31) of the treated fluid in the element assembly (10). During the fluid treatment, the flow is routed through both elements (12, 14) in succession from the direction of the inflow side (29) towards the outflow side (31). In a joint viewing direction (P), the first element (12) facing the inflow side (29) at least partially has a uniform or non-uniform contour and the second element (14) facing the outflow side (31) at least partially has a non-uniform or uniform contour.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: January 11, 2022
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Markus Olschok, Ralf Wnuk, Christian Schindler, Maximilian Meiners
  • Publication number: 20210354061
    Abstract: A filter device for fluids, having a filter housing (1), in which element receptacles (31) for a plurality of filter elements (33) are provided, the filter medium (35) of which separates in the filter housing (1) a dirt side (5) from a clean side (7), wherein the filter housing (1) can be opened for inserting and removing the filter elements (33), and wherein for the filter elements (33) a support in the manner of a basket (19) is provided, which can be inserted into the filter housing (1) and removed from the filter housing (1) and to which the filter elements (33) can be detachably fixed, is characterized in that the filter elements (33) have in addition to the filter medium (35) for particle filtration an adsorption medium (36).
    Type: Application
    Filed: September 25, 2019
    Publication date: November 18, 2021
    Inventors: Ralf WNUK, Hans-Josef SCHMIDT, Pascal Eric VITTE
  • Patent number: 11058975
    Abstract: A filtering apparatus has filtering elements (11) in a filter housing (1), a filter inlet (7) and a filter outlet (9). During filtration, one of the filter elements (11) can be back-flushed by a back-flushing device (45, 49), having a pressure control device (19). The pressure control device has a hydraulic accumulator (19), with a fluid chamber (47) fillable during filtration with clean fluid and connectable for back-flushing via a back-flushing guide (45) to the clean side (29) of the filtering element (11) to be cleaned. For back-flushing, a further fluid chamber (48) of the hydraulic accumulator (19) is subjected to gas pressure. By resultant movement of a separator (59) of the hydraulic accumulator (19), the filling amount of the clean fluid is dispensed for the back-flushing.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: July 13, 2021
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Thomas Böttcher, Thomas Morawietz
  • Patent number: 10537834
    Abstract: A filter apparatus has a plurality of filter elements (21) accommodated in a filter housing (1) with a filter inlet (11) and a filter outlet (13). During the operation one of the filter elements (21) can be backflushed by a backflushing device. The backflushing device includes a pressure control (7) to support the backflushing. Each filter elements (21) is accommodated in an element housing (30). The element housings (30) with the filter elements (21) performing the filtration process are connected to the fluid outlet (13) by their one open ends (33) in a fluid conducting manner. The element housing (30) of the filter element (21) being backflushed is exclusively connected with its open end (33) to the pressure control device (7).
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: January 21, 2020
    Assignee: HYDAC PROCESS TECHNOLOGY
    Inventors: Ralf Wnuk, Markus Olschok, Christian Schindler
  • Publication number: 20200016518
    Abstract: A device for treating fluid, in particular a filter device, having at least one first (12) and one second tubular element (14) forming an element assembly (10) with each other, wherein the one element (14) is accommodated in the other element (12) forming a flow chamber (33) between the two elements (12, 14) such that a first element (12) is arranged in the direction of the inflow side (29) of a fluid to be treated and a second element (14) is arranged in the direction of the outflow side (31) of the treated fluid in the element assembly (10), and wherein during the fluid treatment, the flow is routed through both elements (12, 14) in succession from the direction of the inflow side (29) towards the outflow side (31), is characterized in that, in relation to a joint viewing direction (P), the first element (12) facing the inflow side (29) at least partially has a uniform or non-uniform con tour and the second element (14) facing the outflow side (31) at least partially has a non-uniform or uniform contour.
    Type: Application
    Filed: March 19, 2018
    Publication date: January 16, 2020
    Inventors: Markus OLSCHOK, Ralf WNUK, Christian SCHINDLER, Maximilian MEINERS
  • Publication number: 20190381429
    Abstract: The invention relates to a filter apparatus (10) comprising a plurality of filter elements (20) which can be received in a filter housing (12) having a filter inlet (50) for a fluid to be filtered and a filter outlet (52) for the filtered fluid, characterised in that a pressure control device (42) has at least one control plate (58) which, located inside a connection chamber (14), laterally passes over individual upper ele¬ment openings (54) of the filter element to be backwashed (20), in a predefinable se¬quence, covering the opening to an increasing degree and then exposing the opening again, and in that a discharge opening (46) of the backwash device (44) is, at least in part, fluidically connected to a lower element opening (56) of the filter element (20) to be backwashed, as the pressure control device (42) moves towards the upper element opening (54).
    Type: Application
    Filed: April 27, 2018
    Publication date: December 19, 2019
    Inventors: Ralf WNUK, Thomas BOETTCHER
  • Publication number: 20180257010
    Abstract: The invention relates to a filter apparatus having a plurality of filter elements (21) which can be accommodated in a filter housing (1) with a filter inlet (11) for fluid to be filtered and a filter outlet (13) for the filtered fluid, wherein during the operation of the device at least one of the filter elements (21) can be backflushed by means of a backflushing device for cleaning its effective surface, which backflushing device includes a pressure control device (7) to support the backflushing, characterized in that the filter elements (21) are each accommodated in an element housing (30), the element housings (30) with the filter elements (21) performing the filtration process are connected to the fluid outlet (13) by their one open end (33) in a fluid conducting manner, and the element housing (30) of the respective backflushable filter element (21) is exclusively connected with its one open end (33) to the pressure control device (7).
    Type: Application
    Filed: October 28, 2016
    Publication date: September 13, 2018
    Inventors: Ralf WNUK, Markus OLSCHOK, Christian SCHINDLER
  • Patent number: 10029194
    Abstract: A filter device includes at least one filter housing (1) in which at least one filter element (21) is arranged. Inside the filter housing (1), the filter element separates a clean side (9) from an untreated side (13). On the clean side (9) of the filter housing (1) at least one storage unit (3) having at least one movable separating element (47) is connected. The separating element divides the storage unit (3) into two working chambers or pressure chambers (49) (43).
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: July 24, 2018
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Thomas Böttcher, Markus Olschok, Jörg Hermann Gerstner
  • Patent number: 9855520
    Abstract: A filtering apparatus has a plurality of filtering elements (9) in a filter housing (1), a filter inlet (45) and a filter outlet (43). During the filtration operation, one of the filtering elements (9) can be back-flushed by a back-flushing device (13, 21). The back-flushing device has a pressure control device (13) including a hydraulic accumulator (13). One accumulator fluid chamber (67) can be filled during the filtration operation with a quantity of filtered fluid and can be connected for a back-flushing operation via a back-flushing guide (21) to the clean side (59) of the filtering clement (9) to be cleaned. Another accumulator fluid chamber (79) can be subjected to a media pressure.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 2, 2018
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Thomas Bottcher, Thomas Morawietz
  • Patent number: 9744486
    Abstract: A filter device has filter elements (23) received in a filter housing (1) with a filter inlet (19) and a filter outlet (21). Flow passes through the filter elements (23) for a filtration or backwash in both directions. At least one filter element (23) performs the filtration. At least one other filter element (23), for cleaning off its active filter surface, can be backwashed by a backwash appliance. For supporting the backwashing, the appliance contains a pressure control (43) having a pressure control element (45). During a backwash operation, the fluid flow is controllable in a fluid connection between filter inlet (19) and the filter element (23) that is to be cleaned off. The fluid connection has a connection space (29) having element openings (27), each of which can be connected to an open end of the filter cavity forming the unfiltered side of each filter element (23). A fluid pathway (27) is provided via which, during the filtration, unfiltrate flows into the connection space (29).
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: August 29, 2017
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Bernhard Schlichter, Ralf Wnuk, Christian Gessner, Albert Kaints
  • Patent number: 9233326
    Abstract: A separating device for separating a multiphase medium includes a cyclone separating device (1) that provokes an at least partial distribution of at least two phases of the medium with the formation of a vortex flow for the medium. Each phase having a lower density compared to the other phase is separated from the other phase and can be guided out of the separating device by a collecting device (35, 37).
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: January 12, 2016
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Bernhard Schlichter, Ralf Wnuk, Thomas Böttcher, Christoph Winter, Klaus Kimmerle
  • Patent number: 9180388
    Abstract: A filter device for fluids, in particular for low viscosity fluids such as water, includes a filter housing (1) in which element holders (31) are provided for a plurality of filter elements (21). Filter medium (35) of each filter element in the filter housing (1) separates an unfiltered side (5) from a clean side (7). The filter housing (1) can be opened for inserting and removing the filter elements (21). A carrier in the form of a basket (19) is provided for the filter elements (21). The basket can be inserted into and removed from the filter housing (1). The filter elements (21) can be releasably secured at the basket.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: November 10, 2015
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Knut Herges, Ralf Wnuk, Norbert Lang, Nico Welsch
  • Publication number: 20140202938
    Abstract: A filtering apparatus with a plurality of filtering elements (9) which can be accommodated in a filter housing (1) having a filter inlet (45) for fluid to be filtered and a filter outlet (43) for the filtered fluid, wherein during the filtration operation, at least one of the filtering elements (9) can be back-flushed by means of a back-flushing device (13, 21) in order to dedust the effective filtering surface of said filtering element, the back-flushing device comprising a pressure control device (13) for assisting the back-flushing operation, is characterized in that the pressure control device comprises a hydraulic accumulator (13), the one fluid chamber (67) of which can be filled during the filtration operation with a quantity of dedusted fluid and can be connected for a back-flushing operation via a back-flushing guide (21) to the clean side (59) of the filtering element (9) to be dedusted, and in that, for a back-flushing operation, a further fluid chamber (79) of the hydraulic accumulator (13) can be
    Type: Application
    Filed: April 26, 2012
    Publication date: July 24, 2014
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Thomas Böttcher, Thomas Morawietz
  • Publication number: 20140183110
    Abstract: A filter device having a plurality of filter elements (23) that can be received in a filter housing (1) having a filter inlet (19) for a fluid that is to be filtered and a filter outlet (21) for the filtered fluid, wherein flow can pass through the filter elements (23) for a filtration or backwash in both directions and wherein at the same time at least one filter element (23) performs the filtration and at least one other filter element (23), for cleaning off the active filter surface thereof, can be backwashed by means of a backwash appliance which, for supporting the backwashing, contains a pressure control appliance (43) which has a pressure control element (45) by means of which, during a backwash operation, the fluid flow is controllable in a fluid connection between filter inlet (19) and the filter element (23) that is to be cleaned off, is characterized in that the fluid connection has a connection space (29) having element openings (27) each of which can be connected to an open end of the filter cavi
    Type: Application
    Filed: August 22, 2012
    Publication date: July 3, 2014
    Inventors: Bernhard Schlichter, Ralf Wnuk, Christian Gessner, Albert Kaints
  • Publication number: 20140124430
    Abstract: A filter device for fluids, in particular for low viscosity fluids such as water, comprising a filter housing (1) in which element holders (31) are provided for a plurality of filter elements (21), whose filter medium (35) in the filter housing (1) separates an unfiltered side (5) from a clean side (7), wherein the filter housing (1) can be opened for the purpose of inserting and removing the filter elements (21), is characterized in that a carrier in the form of a basket (19) is provided for the filter elements (21), said basket can be inserted into and removed from the filter housing (1), and the filter elements (21) can be releasably secured at said basket.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 8, 2014
    Applicant: Hydac Process Technology GmbH
    Inventors: Knut Herges, Ralf Wnuk, Norbert Lang, Nico Welsch
  • Publication number: 20140091021
    Abstract: A filtering apparatus with a plurality of filtering elements (11) which can be accommodated in a filter housing (1) having a filter inlet (7) for fluid to be filtered and a filter outlet (9) for the filtered fluid, wherein during the filtration operation, at least one of the filtering elements (11) can be back-flushed by means of a back-flushing device (45, 49) in order to dedust the effective filtering surface of said filtering element, the back-flushing device comprising a pressure control device (19) for assisting the back-flushing operation, is characterized in that the pressure control device comprises a hydraulic accumulator (19), the one fluid chamber (47) of which can be filled during the filtration operation with a quantity of dedusted fluid and can be connected for a back-flushing operation via a back-flushing guide (45) to the clean side (29) of the filtering element (11) to be dedusted, and in that, for a back-flushing operation, a further fluid chamber (48) of the hydraulic accumulator (19) can b
    Type: Application
    Filed: April 26, 2012
    Publication date: April 3, 2014
    Applicant: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Thomas Böttcher, Thomas Morawietz
  • Publication number: 20130292321
    Abstract: The invention relates to a filter device comprising at least one filter housing (1) in which at least one filter element (21) is arranged. Inside the filter housing (1), the filter element separates a clean side (9) from an untreated side (13). The device is characterised in that, on the clean side (9) of the respective filter housing (1) at least one storage unit (3) having at least one movable separating element (47) is connected, which divides the storage unit (3) into two working chambers (49) or pressure chambers (43).
    Type: Application
    Filed: October 19, 2011
    Publication date: November 7, 2013
    Applicant: HYDAC PROCESS TECHNOLOGY GmbH
    Inventors: Ralf Wnuk, Thomas Bottcher, Markus Olschok, Jörg Hermann Gerstner
  • Publication number: 20130232927
    Abstract: The invention relates to a separating device for separating a multiphase medium, comprising a cyclone separating device (1) that provokes an at least partial distribution of at least two phases of said medium with the formation of a vortex flow for the medium. The invention is characterized in that each phase, which has a lower density compared to the respective other phase, is separated from said other phase and can be guided out of the separating device by means of a collecting device (35, 37).
    Type: Application
    Filed: September 28, 2011
    Publication date: September 12, 2013
    Inventors: Bernhard Schlichter, Ralf Wnuk, Thomas Böttcher, Christoph Winter, Klaus Kimmerle