Patents by Inventor Joachim Krützfeldt
Joachim Krützfeldt 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: 11365639Abstract: A sealing washer for use in a rotor of a gas turbine, sealing being brought about on one side of the sealing washer by an approximately radially oriented bearing face and on the other side by way of a supporting face which is oriented in an inclined manner with respect to the rotor axis. The sealing washer is of split configuration and has at least one washer segment with a circumferential washer section. At the dividing point, a pressing section and a triangular section overlap along a dividing face. Here, the dividing face intersects the bearing face and makes sealing both with the pressing section and with the triangular section possible. In order to also make sealing on the supporting face with the pressing section and the triangular section possible, the triangular section is reduced to at most 0.3 times the cross-sectional area of the washer section.Type: GrantFiled: March 16, 2021Date of Patent: June 21, 2022Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KGInventors: Joachim Krützfeldt, Peter Schröder
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Publication number: 20210301671Abstract: A sealing washer for use in a rotor of a gas turbine, sealing being brought about on one side of the sealing washer by an approximately radially oriented bearing face and on the other side by way of a supporting face which is oriented in an inclined manner with respect to the rotor axis. The sealing washer is of split configuration and has at least one washer segment with a circumferential washer section. At the dividing point, a pressing section and a triangular section overlap along a dividing face. Here, the dividing face intersects the bearing face and makes sealing both with the pressing section and with the triangular section possible. In order to also make sealing on the supporting face with the pressing section and the triangular section possible, the triangular section is reduced to at most 0.3 times the cross-sectional area of the washer section.Type: ApplicationFiled: March 16, 2021Publication date: September 30, 2021Applicant: Siemens AktiengesellschaftInventors: Joachim Krützfeldt, Peter Schröder
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Patent number: 10570769Abstract: A machine having a shaft with a stage having a first shaft section having a first diameter, a second shaft section having a second diameter that is shorter than the first, forming a radially extending rotatable shaft end surface; a housing; and a bearing supporting the shaft on the housing by its second shaft section, and lubricated by a lubrication fluid. A sealing chamber has a sealing fluid that prevents the lubrication from leaving the bearing, and is axially limited by the shaft end surface and bearing end side, and radially inwardly limited by the second shaft section released from the bearing. A radially extending and stationary separator plate is in the sealing chamber to achieve an aerodynamic shielding of the bearing end side from the shaft end surface. When the shaft is rotating, the region between the separator plate and the bearing end side is substantially non-rotational.Type: GrantFiled: July 21, 2015Date of Patent: February 25, 2020Assignee: Siemens AktiengesellschaftInventors: Joachim Krützfeldt, Oliver Schneider
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Patent number: 10036256Abstract: A gas turbine has at least one rotor and inner housing part to form an annular chamber therebetween. The annular chamber is fluidically connected to a compressor portion at one end and expansion turbine portion at the other, and is supplied with cooling fluid. First and second swirl supply lines supply the annular chamber with cooling fluid. The cooling fluid is supplied to the surface of the rotor with a tangential flow component, and a first seal element in the annular chamber acts as a flow resistor. A discharge line in the rotor between the first seal element and expansion turbine portion receives and discharges cooling fluid from the second swirl supply line. No bypass lines are provided from the first swirl supply line such that the cooling fluid is conducted around the second swirl supply line in order to be returned to a location of the annular chamber.Type: GrantFiled: October 1, 2015Date of Patent: July 31, 2018Assignee: Siemens AktiengesellschaftInventors: Christian Kowalski, Joachim Krützfeldt
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Publication number: 20180209289Abstract: A machine having a shaft with a stage having a first shaft section having a first diameter, a second shaft section having a second diameter that is shorter than the first, forming a radially extending rotatable shaft end surface; a housing; and a bearing supporting the shaft on the housing by its second shaft section, and lubricated by a lubrication fluid. A sealing chamber has a sealing fluid that prevents the lubrication from leaving the bearing, and is axially limited by the shaft end surface and bearing end side, and radially inwardly limited by the second shaft section released from the bearing. A radially extending and stationary separator plate is in the sealing chamber to achieve an aerodynamic shielding of the bearing end side from the shaft end surface. When the shaft is rotating, the region between the separator plate and the bearing end side is substantially non-rotational.Type: ApplicationFiled: July 21, 2015Publication date: July 26, 2018Applicant: Siemens AktiengesellschaftInventors: Joachim Krützfeldt, Oliver Schneider
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Publication number: 20170218771Abstract: A gas turbine has at least one rotor and inner housing part to form an annular chamber therebetween. The annular chamber is fluidically connected to a compressor portion at one end and expansion turbine portion at the other, and is supplied with cooling fluid. First and second swirl supply lines supply the annular chamber with cooling fluid. The cooling fluid is supplied to the surface of the rotor with a tangential flow component, and a first seal element in the annular chamber acts as a flow resistor. A discharge line in the rotor between the first seal element and expansion turbine portion receives and discharges cooling fluid from the second swirl supply line. No bypass lines are provided from the first swirl supply line such that the cooling fluid is conducted around the second swirl supply line in order to be returned to a location of the annular chamber.Type: ApplicationFiled: October 1, 2015Publication date: August 3, 2017Applicant: Siemens AktiengesellschaftInventors: Christian Kowalski, Joachim Krützfeldt
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Patent number: 8365538Abstract: The invention relates to a high temperature-resistant sealing assembly comprising a sealing segment and a component border which is connected to the sealing segment. A flexible sealing element is provided in order to joining the sealing segment and the component border. The invention is characterized in that the flexible sealing element compensates both thermal expansions and relative movements of the component border and the components resting against the sealing segment. The flexible sealing element and the sealing segment are subject to little wear and have a long service life. The invention further relates to a combustion chamber that is equipped with a high temperature-resistant sealing assembly as well as a gas turbine encompassing such a combustion chamber.Type: GrantFiled: September 20, 2006Date of Patent: February 5, 2013Assignee: Siemens AktiengesellschaftInventors: Tobias Buchal, Gregor Frank, Uwe Gruschka, Joachim Krützfeldt, Kai-Uwe Rogos, Axel Schaberg
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Patent number: 8157531Abstract: A closing assembly for closing the gap remaining between the first and last blade of a blade ring that is inserted into a peripheral groove of turbomachinery is provided. The assembly includes at least two parts each of which can be hooked onto projections that form an undercut in the peripheral groove and includes a securing element, which secures the parts from becoming detached from the peripheral groove. For closing the remaining gap, the securing element is mounted to rotate about its longitudinal axis between the two parts and has a key head and a web. The web can be positioned by rotation is such a way that to fit the parts in the peripheral groove. The parts can be displaced in relation to one another and to secure the parts from being detached from the groove. The web can be placed against at least one lateral face of one of the parts.Type: GrantFiled: December 27, 2006Date of Patent: April 17, 2012Assignee: Siemens AktiengesellschaftInventors: Joachim Krützfeldt, Markus Kunze, Silvio-Ulrich Martin, Stefan Mutke, Kang Qian, Christoph Richter, Oliver Schneider, Peter Schröder, Michael Schwarz, Ulrich Waltke
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Patent number: 8157530Abstract: A closing assembly is provided. The closing assembly closes the gap remaining between the first blade and the last blade of a blade ring that is inserted in a peripheral groove of a turbo machinery, the assembly consisting of at least two lateral parts, at least one of which may be hooked onto a projection that forms an undercut in the peripheral groove and at least one securing element, which secures the parts from coming detached from the peripheral groove. To provide a particularly reliable closing assembly, the securing element is configured as a pin, joining the parts of the closing assembly in a non-positive fit.Type: GrantFiled: December 27, 2006Date of Patent: April 17, 2012Assignee: Siemens AktiengesellschaftInventors: Joachim Krützfeldt, Markus Kunze, Silvio-Ulrich Martin, Stefan Mutke, Kang Qian, Christoph Richter, Oliver Schneider, Peter Schröder, Michael Schwarz, Ulrich Waltke
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Publication number: 20100146985Abstract: The invention relates to a high temperature-resistant sealing assembly comprising a sealing segment and a component border which is connected to the sealing segment. A flexible sealing element is provided in order to joining the sealing segment and the component border. The invention is characterized in that the flexible sealing element compensates both thermal expansions and relative movements of the component border and the components resting against the sealing segment. The flexible sealing element and the sealing segment are subject to little wear and have a long service life. The invention further relates to a combustion chamber that is equipped with a high temperature-resistant sealing assembly as well as a gas turbine encompassing such a combustion chamber.Type: ApplicationFiled: September 20, 2006Publication date: June 17, 2010Inventors: Tobias Buchal, Gregor Frank, Uwe Gruschka, Joachim Krützfeldt, Kai-Uwe Rogos, Alex Schaberg
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Publication number: 20090220345Abstract: The invention relates to a closing assembly for closing the gap remaining between the first and last blade of a blade ring that is inserted into a peripheral groove of turbomachinery. Said assembly comprises at least two parts each of which can be hooked onto projections that form an undercut in said peripheral groove and comprises a securing element, which secures the parts from becoming detached from the peripheral groove. To provide a closing assembly for closing the remaining gap, which can be simply and cost-effectively detached and which reliably withstands high mechanical stress, the securing element is mounted to rotate about its longitudinal axis between the two parts and has a key head and a web.Type: ApplicationFiled: December 27, 2006Publication date: September 3, 2009Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Joachim Krützfeldt, Markus Kunze, Silvio-Ulrich Martin, Stefan Mutke, Kang Qian, Christoph Richter, Oliver Schneider, Peter Schröder, Michael Schwarz, Ulrich Waltke