Patents by Inventor Detlef Maiwald
Detlef Maiwald 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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Publication number: 20240027133Abstract: The invention relates to a method for operating a furnace (10), in particular an anode furnace, the furnace being formed by a plurality of heating channels (12) and furnace chambers, the furnace chambers serving to receive carbonaceous bodies, in particular anodes, and the heating channels serving to control the temperature of the furnace chambers, the furnace comprising at least one furnace unit (11), the furnace unit comprising a heating zone (18), a fire zone (19) and a cooling zone (20), which for their part are formed by at least one section (37, 38, 39, 40, 41, 42) comprising furnace chambers, a suction ramp (15) of the furnace unit being disposed in a section of the heating zone, and a burner ramp (16) of the furnace unit being disposed in a section of the fire zone, process air in the heating channels of the fire zone being heated by means of the burner ramp, and exhaust gas being suctioned from the heating channels of the heating zone by means of the suction ramp, an operation of the ramps being contType: ApplicationFiled: September 3, 2020Publication date: January 25, 2024Inventors: Frank Heinke, Detlef Maiwald, Hans-Jörg Seifert
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Publication number: 20230400254Abstract: A method and a control device for operating a furnace, in particular an anode furnace, formed by a plurality of heating channels and furnace chambers, the furnace chambers serving to receive carbonaceous products, in particular anodes, and the heating channels serving to control the temperature of the furnace chambers. The furnace includes at least one furnace unit that contains a heating zone, a fire zone and a cooling zone, which for their part are formed by at least one section that has furnace chambers. A suction ramp of the furnace unit is disposed in a section of the heating zone, and a burner ramp of the furnace unit is disposed in a section of the fire zone. Process air in the heating channels of the fire zone is heated by the burner ramp, and exhaust gas is suctioned from the heating channels of the heating zone by the suction ramp, while operation of the ramps is controlled by a control device of the furnace unit.Type: ApplicationFiled: July 14, 2021Publication date: December 14, 2023Inventors: Frank Heinke, Detlef Maiwald, Hans-Joerg Seifert
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Publication number: 20220381512Abstract: The invention relates to a method and a control device for operating a furnace (10), in particular an anode furnace, the furnace being formed by a plurality of heating channels (12) and furnace chambers (13), the furnace chambers serving to receive carbonaceous products, in particular anodes, and the heating channels serving to control the temperature of the furnace chambers, the furnace comprising at least one furnace unit (11), the furnace unit comprising a heating zone (18), a fire zone (19) and a cooling zone (20), which for their part are formed by at least one section (37, 38, 39, 40, 41, 42) comprising furnace chambers, a suction ramp (15) of the furnace unit being disposed in a section of the heating zone, and a burner ramp (16) of the furnace unit being disposed in a section of the fire zone, process air in the heating channels of the fire zone being heated by means of the burner ramp, and exhaust gas being suctioned from the heating channels of the heating zone by means of the suction ramp, an operaType: ApplicationFiled: August 19, 2020Publication date: December 1, 2022Inventors: Detlef MAIWALD, Frank HEINKE
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Patent number: 9927175Abstract: The invention relates to a method for monitoring an operating status of an anode furnace, wherein the anode furnace is formed from a plurality of heating ducts (12) and furnace chambers, wherein the furnace chambers serve for receiving anodes and the heating ducts serve for controlling the temperature of the furnace chambers, wherein the anode furnace comprises at least one furnace unit (11) having a heating zone (18), a firing zone (19) and a cooling zone (20), wherein a suction device (15) is arranged in the heating zone and a burner device (16) is arranged in the firing zone, wherein, by means of the burner device, combustion air is heated up in the heating ducts of the firing zone, wherein, by means of the suction device, hot air is sucked out of the heating ducts of the heating zone, wherein a suction output of the suction device is determined, and wherein a pressure in the heating duct is measured, wherein a volumetric flow in the heating duct is determined from a ratio of suction output and pressure.Type: GrantFiled: September 29, 2011Date of Patent: March 27, 2018Assignee: INNOVATHERM PROF. DR. LEISENBERG GMBH + CO. KGInventors: Hans-Peter Mnikoleiski, Detlef Maiwald, Wolfgang Uhrig, Frank Heinke, Domenico Di Lisa, Andreas Himmelreich
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Patent number: 9714791Abstract: A method and to a control device 10 for operating an anode furnace including an extraction ramp arranged in a section of a heat-up zone and a burner ramp arranged in a section of a firing zone of the furnace unit, wherein operation of ramps is controlled by means of a control device of the furnace unit, wherein the ramps each have a read unit, wherein the section each have at least one stationary transponder unit, wherein the read units of the ramps communicate with the transponder units of the sections in which the ramps are arranged, wherein the respective transponder units are identified by means of the control device, and wherein a respective position of the ramps is determined by allocating the ramps to the respective transponder units.Type: GrantFiled: January 25, 2012Date of Patent: July 25, 2017Assignee: INNOVATHERM PROF. DR. LEISENBERG GMBH + CO. KGInventors: Peter Krieg, Hans-Jörg Seifert, Andreas Himmelreich, Frank Heinke, Detlef Maiwald
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Patent number: 9328960Abstract: An air feeding device for producing anodes in an annular kiln includes at least one kiln unit having a heating zone, a firing zone, and a cooling zone, each having a plurality of kiln chambers which are interconnected by heating channels, are formed as heat exchangers and are used to receive anodes. Primary air is introduced into the cooling zone by a primary air feeding device for the passage of air through the kiln unit and, once it has passed through the firing zone, being discharged from the heating zone as flue gas by means of an exhaust device. Secondary air is fed into the heating zone upstream of the exhaust device by a secondary air feeding device.Type: GrantFiled: November 15, 2010Date of Patent: May 3, 2016Assignee: INNOVATHERM PROF. DR. LEISENBERG GMBH+CO. KGInventors: Domenico Di Lisa, Frank Heinke, Peter Krieg, Detlef Maiwald, Hans-Peter Mnikoleiski, Wolfgang Uhrig
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Publication number: 20150159953Abstract: The invention relates to a method and to a control apparatus for operating an anode furnace (10), wherein the anode furnace is formed from a plurality of heating ducts (12) and furnace chambers, wherein the furnace chambers serve for receiving anodes and the heating ducts serve for controlling the temperature of the furnace chambers, wherein the anode furnace comprises at least one furnace unit (11), wherein the furnace unit comprises a heating zone (20), a firing zone (21) and a cooling zone (22), which are in turn formed from at least one section (33, 34, 35, 36, 37, 38) comprising furnace chambers, wherein a suction ramp (14) is arranged in a section of the heating zone and a burner ramp (15) of the furnace unit is arranged in a section of the firing zone, wherein operation of the ramps (14, 15, 16, 17, 18, 19) is controlled by means of a control apparatus of the furnace unit, wherein the ramps include one reading unit each, wherein the sections include at least one stationary transponder unit each, whereiType: ApplicationFiled: January 25, 2012Publication date: June 11, 2015Inventors: Peter Krieg, Hans-Jörg Seifert, Andreas Himmelreich, Frank Heinke, Detlef Maiwald
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Publication number: 20140255860Abstract: The invention relates to a method for monitoring an operating status of an anode furnace, wherein the anode furnace is formed from a plurality of heating ducts (12) and furnace chambers, wherein the furnace chambers serve for receiving anodes and the heating ducts serve for controlling the temperature of the furnace chambers, wherein the anode furnace comprises at least one furnace unit (11) having a heating zone (18), a firing zone (19) and a cooling zone (20), wherein a suction device (15) is arranged in the heating zone and a burner device (16) is arranged in the firing zone, wherein, by means of the burner device, combustion air is heated up in the heating ducts of the firing zone, wherein, by means of the suction device, hot air is sucked out of the heating ducts of the heating zone, wherein a suction output of the suction device is determined, and wherein a pressure in the heating duct is measured, wherein a volumetric flow in the heating duct is determined from a ratio of suction output and pressure.Type: ApplicationFiled: September 29, 2011Publication date: September 11, 2014Inventors: Hans-Peter Mnikoleiski, Detlef Maiwald, Wolfgang Uhrig, Frank Heinke, Domenico Di Lisa, Andreas Himmelreich
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Patent number: 8684598Abstract: A thermoelement for measuring the temperature in gaseous or fluid media by means of one or more thermocouples comprising wires of different metals welded together which give off a resulting electrical voltage when heated and are configured as a measuring insert arranged in an insulating rod disposed in a heat-resistant protective tube that can be connected to a connection head, the protective tube being wholly or partially surrounded by a holding tube. To prevent a high input of heat which has an unfavourable effect on temperature measurement, the holding tube is supported against the protective tube at a radial distance from the protective tube, and a heat-resistant trace and optionally an insulating material are inserted between the protective tube and the holding tube, and the holding tube is attached to the connection head and/or the protective tube in one or both end areas and is provided with thermal insulation.Type: GrantFiled: May 11, 2011Date of Patent: April 1, 2014Assignee: innovatherm Prof. Dr. Leisenberg GmbH & Co. KGInventors: Christian Hoβbach, Peter Krieg, Detlef Maiwald, Hans-Peter Mnikoleiski, Wolfgang Uhrig
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Publication number: 20120295208Abstract: The invention relates to a method and to an air feeding device for producing anodes in an annular kiln (10), comprising at least one kiln unit (“fire”) (11) having a heating zone (13), a firing zone (14), and a cooling zone (15), each having a plurality of kiln chambers (12) which are interconnected by heating channels (17), are formed as heat exchangers and are used to receive anodes, in said method primary air being introduced into the cooling zone by means of a primary air feeding device (21) for the passage of air through the kiln unit and, once it has passed through the firing zone, being discharged from the heating zone as flue gas by means of an exhaust device (22), wherein secondary air is fed into the heating zone in the direction of the primary air flow, upstream of the exhaust device, by means of a secondary air feeding device (24).Type: ApplicationFiled: November 15, 2010Publication date: November 22, 2012Inventors: Domenico Di Lisa, Frank Heinke, Peter Krieg, Detlef Maiwald, Hans-Peter Mnikoleiski, Wolfgang Uhrig
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Publication number: 20110292968Abstract: A thermoelement (1) for measuring the temperature in gaseous or fluid media by means of one or more thermocouples (4) comprising wires of different metals welded together which give off a resulting electrical voltage when heated and are configured as a measuring insert (2) arranged in an insulating rod (3) disposed in a heat-resistant protective tube (11) that can be connected to a connection head (6), the protective tube being wholly or partially surrounded by a holding tube (21). To prevent a high input of heat which has an unfavourable effect on a temperature measurement, the holding tube (21) is supported against the protective tube (11) at a radial distance from the protective tube (11), and a heat-resistant trace (31) and optionally an insulating material (33) are inserted between the protective tube (11) and the holding tube (21), and the holding tube (21) is attached to the connection head (6) and/or the protective tube (11) in one or both end areas and is provided with thermal insulation.Type: ApplicationFiled: May 11, 2011Publication date: December 1, 2011Inventors: Christian Hoßach, Peter Krieg, Detlef Maiwald, Hans-Peter Mnikoleiski, Wolfgang Uhrig
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Publication number: 20070065766Abstract: A device and method for measuring the operating condition of an open anode furnace, includes at least one sensor for measuring the temperature and/or determining the fuel quantity or the burner capacity of the burners allocated to the anode furnace, or for determining the opacity of the air, and for the independent and automatic control of the process management of the anode furnace. This is achieved by at least one measuring device for measuring the throughput of air flowing through the anode furnace provided in an air duct of the anode furnace through which air flows. The measured values are evaluated by an electronic control unit, and the electronic control unit sets the operating condition of the anode furnace according to the particular measured values.Type: ApplicationFiled: June 30, 2006Publication date: March 22, 2007Inventors: Hans Mnikoleiski, Detlef Maiwald, Wolfgang Uhrig, Wolfgang Leisenberg
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Patent number: 4938684Abstract: The burners of a fuel-fired system are controlled by means of a feedback control system for temperature control. The control system comprises temperature measuring means, a controller for temperature control, final burner controlling means translating the output from the controller into an appropriate burner input rate, and a digital central processing unit determining pulse spacing (t.sub.ps), pulse duration (tON) and pulse separation (tOFF). A minimum pulse spacing (.sup.t ps.sub.min), being the sum of the minimum pulse duration (tON.sub.min) and the minimum pulse separation (tOFF.sub.min), is present and used as an input rate reference value. Using the input rate reference value for the minimum pulse spacing, the burner input rate is controlled in accordance with process requirements by varying pulse spacing (t.sub.ps) through varying pulse separation or pulse duration.Type: GrantFiled: August 30, 1989Date of Patent: July 3, 1990Assignee: LVE Verfahrenselektronik GmbHInventors: Nolte Karl, Detlef Maiwald, Michael Bock, Thomas Spahr