Patents by Inventor Andreas Fredenhagen

Andreas Fredenhagen 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: 10174972
    Abstract: A compressor system for compressing gases in a multistage compression includes a next-to-last compressor in a flow direction and a last compressor which are connected in series, one or more intercoolers between the next-to-last compressor and the last compressor, and an adsorption dryer connected downstream of the last compressor and designed as a rotation dryer having a rotating adsorption chamber. An inside of the adsorption chamber includes a regeneration sector and a drying sector. The regeneration sector is connected to the last compressor such that the compressed gas stream output from the last compressor is guided in a full stream principle through the regeneration sector. A bypass line which bypasses the intercoolers is situated between next-to-last compressor and last compressor, and includes a setting element to set the gas stream guided via the bypass line and therefore the regeneration entry temperature of the compressed gas in the regeneration sector appropriately.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: January 8, 2019
    Assignee: KAESER KOMPRESSOREN SE
    Inventors: Dirk Simross, Andreas Fredenhagen
  • Patent number: 10143962
    Abstract: The invention relates to a heat exchanger for a refrigerant dryer such as a compressed air refrigerant dryer comprising at least one first inflow surface element, past which a fluid to be dried such as compressed air can flow during operation of the heat exchanger, and comprising at least one second inflow surface element, past which a refrigerant fluid can flow as required during operation of the heat exchanger, wherein the first and second inflow surface elements are or can be coupled at least in some areas to at least one cold store chamber that is provided for filling with a cold accumulator medium, and wherein the first and/or second inflow surface element(s) (is) are connected to at least one heat transfer element which extends into the cold store chamber, e.g. penetrates the cold store chamber.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 4, 2018
    Assignee: KAESER KOMPRESSOREN SE
    Inventors: Andreas Förster, Andreas Fredenhagen, Michael Feisthauer, Andreas Walter, Kristian Dering
  • Patent number: 9943803
    Abstract: In a method for operating an adsorption device to remove at least in part an adsorbable and/or condensable component from a gas flow. The adsorption device contains an adsorption material and is configured in such a way that the adsorption material is brought into contact with the gas flow in an operating region and can be regenerated in a regeneration region. In the case of an at least temporary interruption or discontinuation of transportation of the gas flow to provide an output gas flow, a follow-up operating phase is initiated, during which a portion of the adsorption material is moved out of the regeneration region.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: April 17, 2018
    Assignee: KAESER KOMPRESSOREN SE
    Inventor: Andreas Fredenhagen
  • Publication number: 20160214056
    Abstract: The invention relates to a method for operating an adsorption device to remove at least in part an adsorbable and/or condensable component from a gas flow. The adsorption device contains an adsorption material and is configured in such a way that the adsorption material is brought into contact with the gas flow in an operating region and can be regenerated in a regeneration region, and that for this purpose, in a load operating phase, consecutive portions of the adsorption material can be moved continuously through the operating region and the regeneration region relative to the operating region and the regeneration region in a recurring manner. In a first method, the gas flow is transported through the adsorption device in that the component is removed at least in part from the gas flow, and an output gas flow is provided.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 28, 2016
    Applicant: KAESER KOMPRESSOREN SE
    Inventor: Andreas FREDENHAGEN
  • Publication number: 20160138838
    Abstract: A compressor system for compressing gases in a multistage compression includes a next-to-last compressor in a flow direction and a last compressor which are connected in series, one or more intercoolers between the next-to-last compressor and the last compressor, and an adsorption dryer connected downstream of the last compressor and designed as a rotation dryer having a rotating adsorption chamber. An inside of the adsorption chamber includes a regeneration sector and a drying sector. The regeneration sector is connected to the last compressor such that the compressed gas stream output from the last compressor is guided in a full stream principle through the regeneration sector. A bypass line which bypasses the intercoolers is situated between next-to-last compressor and last compressor, and includes a setting element to set the gas stream guided via the bypass line and therefore the regeneration entry temperature of the compressed gas in the regeneration sector appropriately.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 19, 2016
    Inventors: Dirk SIMROSS, Andreas FREDENHAGEN
  • Patent number: 8857207
    Abstract: A refrigerant dryer, in particular a compressed air refrigerant dryer, is provided for drying a gaseous fluid while cooling the gaseous fluid using a refrigerant. The dryer includes a pressure fluid-refrigerant agent-heat exchanger (30) in which a cooling of the gaseous fluid takes place directly or indirectly by a refrigerant conveyed in a primary loop (16), one or more refrigerant compressor/compressors (24) for operating the primary loop, and a cold accumulator (13) with an accumulator-side heat exchanger (20) which couples an accumulator discharge fluid to a cold accumulator medium (14). The pressure fluid-refrigerant agent-heat exchanger (30) and the cold accumulator (13) are fluidically connected or can be brought into fluidic connection via a discharge loop (15) for an accumulator discharge fluid.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: October 14, 2014
    Assignee: Kaeser Kompressoren SE
    Inventors: Kristian Dering, Michael Feisthauer, Andreas Fredenhagen, Andreas Foerster, Klaus-Ulrich Kobelt
  • Publication number: 20130032315
    Abstract: The invention relates to a heat exchanger for a refrigerant dryer such as a compressed air refrigerant dryer comprising at least one first inflow surface element, past which a fluid to be dried such as compressed air can flow during operation of the heat exchanger, and comprising at least one second inflow surface element, past which a refrigerant fluid can flow as required during operation of the heat exchanger, wherein the first and second inflow surface elements are or can be coupled at least in some areas to at least one cold store chamber that is provided for filling with a cold accumulator medium, and wherein the first and/or second inflow surface element(s) (is) are connected to at least one heat transfer element which extends into the cold store chamber, e.g. penetrates the cold store chamber.
    Type: Application
    Filed: April 12, 2011
    Publication date: February 7, 2013
    Applicant: KAESER KOMPRESSOREN AG
    Inventors: Andreas Förster, Andreas Fredenhagen, Michael Feisthauer, Andreas Walter, Kristian Dering
  • Patent number: 8349054
    Abstract: An adsorption drying apparatus, in particular for drying a compressed gas, includes an adsorption chamber (11) having a plurality of adsorption conduits (101) containing an adsorption material (123), a first feeding line (106) and a first discharging line (109) disposed at a first end (111) of the adsorption chamber (11), and a second feeding line (108) and a second discharging line (107) disposed at a second end (112) of the adsorption chamber (11). The adsorption chamber (11) is rotatable with respect to the feeding and discharging lines (106, 107, 108, 109) so that the adsorption conduits may be fluidically connected in temporal alternation, wherein the gas is dried in a drying sector (102), and the adsorption material (123) is regenerated in the regeneration sector (103). The first feeding line (106) is configured such that the gas stream to be dried may be fed to the regeneration sector (103) as a full flow.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 8, 2013
    Assignee: Kaeser Kompressoren AG
    Inventors: Andreas Fredenhagen, René Martin, Michael Feisthauer, Michael Rohdenburg
  • Publication number: 20110132191
    Abstract: An adsorption drying apparatus, in particular for drying a compressed gas, includes an adsorption chamber (11) having a plurality of adsorption conduits (101) containing an adsorption material (123), a first feeding line (106) and a first discharging line (109) disposed at a first end (111) of the adsorption chamber (11), and a second feeding line (108) and a second discharging line (107) disposed at a second end (112) of the adsorption chamber (11). The adsorption chamber (11) is rotatable with respect to the feeding and discharging lines (106, 107, 108, 109) so that the adsorption conduits may be fluidically connected in temporal alternation, wherein the gas is dried in a drying sector (102), and the adsorption material (123) is regenerated in the regeneration sector (103). The first feeding line (106) is configured such that the gas stream to be dried may be fed to the regeneration sector (103) as a full flow.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 9, 2011
    Applicant: KAESER KOMPRESSOREN GMBH
    Inventors: Andreas FREDENHAGEN, René MARTIN, Michael FEISTHAUER, Michael ROHDENBURG
  • Publication number: 20110061409
    Abstract: A refrigerant dryer, in particular a compressed air refrigerant dryer, is provided for drying a gaseous fluid while cooling the gaseous fluid using a refrigerant. The dryer includes a pressure fluid-refrigerant agent-heat exchanger (30) in which a cooling of the gaseous fluid takes place directly or indirectly by a refrigerant conveyed in a primary loop (16), one or more refrigerant compressor/compressors (24) for operating the primary loop, and a cold accumulator (13) with an accumulator-side heat exchanger (20) which couples an accumulator discharge fluid to a cold accumulator medium (14). The pressure fluid-refrigerant agent-heat exchanger (30) and the cold accumulator (13) are fluidically connected or can be brought into fluidic connection via a discharge loop (15) for an accumulator discharge fluid.
    Type: Application
    Filed: October 14, 2009
    Publication date: March 17, 2011
    Applicant: KAESER Kompressoren GmbH
    Inventors: Kristian DERING, Michael FEISTHAUER, Andreas FREDENHAGEN, Andreas FOERSTER, Klaus-Ulrich KOBELT
  • Publication number: 20100242504
    Abstract: The present invention provides a process for controlling the cooling phase of a container to be cooled for a heat-regenerating adsorption system with the following process steps: definition of a cooling phase cut-off temperature as a function of at least one parameter which is characteristic of the cooling process, recording the outlet temperature of a cooling fluid emerging from the container to be cooled by means of an outlet temperature recording device, and termination of the cooling phase when the recorded outlet temperature of the emerging cooling fluid falls below the defined cooling phase cut-off temperature. The present invention also provides a device for a heat-regenerating adsorption system for controlling the cooling phase of a container to be cooled in accordance with this process.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Applicant: KAESER KOMPRESSOREN GMBH
    Inventor: Andreas FREDENHAGEN
  • Publication number: 20100180611
    Abstract: A method is provided for applying a cover layer (9) to a net structure (4) to be used for medical purposes, in particular a thrombosis filter. The net structure (4) is applied to a planar substrate (1) that covers openings (5) of the net structure on one side, wherein the openings (5) across the uncovered side are filled with a sacrificial material (7), in particular copper. The net structure (4) is lifted from the substrate (1). A cover layer (9) is deposited on the surface previously covered by the substrate, and the sacrificial material (7) is removed.
    Type: Application
    Filed: October 14, 2009
    Publication date: July 22, 2010
    Applicant: KAESER KOMPRESSOREN GMBH
    Inventors: Kristian DERING, Michael FEISTHAUER, Andreas FREDENHAGEN, Andreas FOERSTER, Klaus-Ulrich KOBELT
  • Publication number: 20050233040
    Abstract: Method and device for homogenizing emulsions, especially milk, wherein an emulsion is subjected to a high shearing force in a homoginizer equipped with microstructures.
    Type: Application
    Filed: April 9, 2003
    Publication date: October 20, 2005
    Inventors: Wolfgang Ehrfeld, Andreas Fredenhagen
  • Patent number: 5093330
    Abstract: N-substituted derivatives of staurosporine of the general formula[Stau]--N(CH.sub.3)--R (I)in which [Stau] represents a residue of the partial formula ##STR1## and R represents a hydrocarbyl radical R.sup.o or an acyl radical Ac, which radicals preferably have a maximum of 30 carbon atoms, and salts of compounds of the formula I having salt-forming properties, are distinguished as selective inhibitors of proteinkinase C. They are manufactured by conventional alkylation or acylation, respectively, of staurosporine.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: March 3, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Giorgio Caravatti, Andreas Fredenhagen