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).
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Patent number: 10174972Abstract: 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: GrantFiled: November 13, 2015Date of Patent: January 8, 2019Assignee: KAESER KOMPRESSOREN SEInventors: Dirk Simross, Andreas Fredenhagen
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Patent number: 10143962Abstract: 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: GrantFiled: April 12, 2011Date of Patent: December 4, 2018Assignee: KAESER KOMPRESSOREN SEInventors: Andreas Förster, Andreas Fredenhagen, Michael Feisthauer, Andreas Walter, Kristian Dering
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Patent number: 9943803Abstract: 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: GrantFiled: September 4, 2014Date of Patent: April 17, 2018Assignee: KAESER KOMPRESSOREN SEInventor: Andreas Fredenhagen
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Publication number: 20160214056Abstract: 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: ApplicationFiled: September 4, 2014Publication date: July 28, 2016Applicant: KAESER KOMPRESSOREN SEInventor: Andreas FREDENHAGEN
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Publication number: 20160138838Abstract: 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: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Inventors: Dirk SIMROSS, Andreas FREDENHAGEN
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Patent number: 8857207Abstract: 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: GrantFiled: October 14, 2009Date of Patent: October 14, 2014Assignee: Kaeser Kompressoren SEInventors: Kristian Dering, Michael Feisthauer, Andreas Fredenhagen, Andreas Foerster, Klaus-Ulrich Kobelt
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Publication number: 20130032315Abstract: 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: ApplicationFiled: April 12, 2011Publication date: February 7, 2013Applicant: KAESER KOMPRESSOREN AGInventors: Andreas Förster, Andreas Fredenhagen, Michael Feisthauer, Andreas Walter, Kristian Dering
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Patent number: 8349054Abstract: 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: GrantFiled: December 1, 2010Date of Patent: January 8, 2013Assignee: Kaeser Kompressoren AGInventors: Andreas Fredenhagen, René Martin, Michael Feisthauer, Michael Rohdenburg
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Publication number: 20110132191Abstract: 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: ApplicationFiled: December 1, 2010Publication date: June 9, 2011Applicant: KAESER KOMPRESSOREN GMBHInventors: Andreas FREDENHAGEN, René MARTIN, Michael FEISTHAUER, Michael ROHDENBURG
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Publication number: 20110061409Abstract: 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: ApplicationFiled: October 14, 2009Publication date: March 17, 2011Applicant: KAESER Kompressoren GmbHInventors: Kristian DERING, Michael FEISTHAUER, Andreas FREDENHAGEN, Andreas FOERSTER, Klaus-Ulrich KOBELT
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Publication number: 20100242504Abstract: 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: ApplicationFiled: March 29, 2010Publication date: September 30, 2010Applicant: KAESER KOMPRESSOREN GMBHInventor: Andreas FREDENHAGEN
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Publication number: 20100180611Abstract: 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: ApplicationFiled: October 14, 2009Publication date: July 22, 2010Applicant: KAESER KOMPRESSOREN GMBHInventors: Kristian DERING, Michael FEISTHAUER, Andreas FREDENHAGEN, Andreas FOERSTER, Klaus-Ulrich KOBELT
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Publication number: 20050233040Abstract: 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: ApplicationFiled: April 9, 2003Publication date: October 20, 2005Inventors: Wolfgang Ehrfeld, Andreas Fredenhagen
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Patent number: 5093330Abstract: 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: GrantFiled: March 21, 1991Date of Patent: March 3, 1992Assignee: Ciba-Geigy CorporationInventors: Giorgio Caravatti, Andreas Fredenhagen