Patents by Inventor Martin Kotsch
Martin Kotsch 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: 8590607Abstract: A heat exchanger includes a tube with a heat-exchange passage and an end piece. The heat-exchange passage directs the flow of a first medium and includes a first flow section and a second flow section arranged in parallel. The end piece has a tube plate that includes a base plate, a diverter plate, and a cover plate. An end of the tube connects to the base plate. The diverter plate has a cutout that forms a diverter passage. The cover plate lies adjacent to the diverter plate and covers the diverter passage in a fluid-tight manner. A second medium flows exterior to the heat-exchange passage.Type: GrantFiled: January 8, 2009Date of Patent: November 26, 2013Assignee: Behr GmbH & Co. KGInventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Joachim Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7650934Abstract: The invention relates to a heat exchanger, particularly a radiator for a heating or air conditioning unit in motor vehicles, which cools a coolant. Said heat exchanger (1) is penetrated by air, comprises collector pipes (S1, S2, S2, S4) and several essentially horizontally disposed pipes (5), and is divided into several partial blocks (T1, T2, T3, T4). The surfaces of the inventive partial blocks are selected according to the dimensions of structural space-related zones having different air temperatures inside the assembly space of the heat exchanger, the partial block which is first penetrated by the coolant being arranged within a structural space-related zone having a higher air temperature, preferably within the zone having the highest air temperature.Type: GrantFiled: July 3, 2003Date of Patent: January 26, 2010Assignee: BEHR GmbH & Co.Inventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7650935Abstract: The invention relates to a heat exchanger comprising tubes (2, 3) that can be flown through along a number of hydraulically parallel flow paths (2c, 2d) that are comprised of sections.Type: GrantFiled: December 19, 2002Date of Patent: January 26, 2010Assignee: BEHR GmbH & Co. KGInventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Joachim Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20090126920Abstract: Disclosed herein is a heat exchanger with tubes (1) and at least one end piece, which has a tube bottom that, in turn, has a bottom plate (8), a baffle plate (12) and a covering plate (16).Type: ApplicationFiled: January 8, 2009Publication date: May 21, 2009Inventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Joachim Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7481266Abstract: Disclosed herein is a heat exchanger with tubes (1) and at least one end piece, which has a tube bottom that, in turn, has a bottom plate (8), a baffle plate (12) and a covering plate (16).Type: GrantFiled: December 19, 2002Date of Patent: January 27, 2009Assignee: Behr GmbH & Co. KGInventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Joachim Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7347063Abstract: A device for exchanging heat is disclosed herein. This device may be used in motor vehicle air-conditioning installations which include at least one distribution or collection chamber for a fluid, at least one flow device which is provided with at least one first flow connection section on the end thereof, and at least one second flow connection section on the end thereof, the first flow connection section being connected to the second flow connection section by means of at least one pipe section. At least one of the flow connection sections may be twisted at least once, one flow connection section may be connected to the collection chamber, and the other flow connection section may be connected to the distribution chamber.Type: GrantFiled: July 22, 2003Date of Patent: March 25, 2008Assignee: BEHR GmbH & Co. KGInventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7318470Abstract: The invention relates to a device for exchanging heat, particularly for use in motor vehicle air-conditioning systems, comprising at least one coolant, at least one coolant inlet (3), and at least one coolant outlet (4), which lead into at least one head pipe (7, 8, 9), whereby the head pipe (7, 8, 9) is divided into at least one inlet section (41?) and into at least one outlet section (42?) by at least one separating element (49). The device for exchanging heat comprises at least one flow-through element (19), which has at least two flow paths situated at least partially parallel to one another, and at least one cross-distributor (10?, 10?, 11?, 11?, 12) via which the flow paths of the flow-through element (19) are fluid-connected so that the inlet section is fluid-connected to the outlet section of the head pipe (7, 8, 9).Type: GrantFiled: December 19, 2002Date of Patent: January 15, 2008Assignee: BEHR GmbH & Co. KGInventors: Walter Demuth, Martin Kotsch, Michael Kranich, Christoph Walter, Karl-Heinz Staffa
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Publication number: 20070056720Abstract: The invention relates to a heat exchanger (1), in particular for a motor vehicle, comprising a heat exchange assembly with a primary side, through which a first medium flows and a secondary side, through which a second medium flows and a housing sleeve with an inlet and an outlet for a second medium.Type: ApplicationFiled: September 10, 2004Publication date: March 15, 2007Inventors: Walter Demuth, Michael Kohl, Martin Kotsch, Michael Kranich, Karl-Heinz Staffa, Christoph Walter
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Patent number: 7146819Abstract: The invention relates to a method of refrigerant level monitoring in a refrigerant circuit of an air-conditioning or heat-pump system having a compressor and a refrigerant which may, depending on the operating point, be operated in the supercritical range. The method includes standstill level monitoring with the compressor switched off and/or in-operation level monitoring with the compressor switched on. In the case of in-operation level monitoring, the refrigerant overheat (dTü) at the evaporator is registered and, in the event of excessive overheat, it is concluded that there is underfilling. At a standstill, the pressure and temperature of the refrigerant are registered, and it is concluded that there is an improper refrigerant filling level if the pressure (pKM) lies below a minimum pressure value (pmin) or the temperature (TKM) lies above a maximum saturation temperature value (TS) with the pressure being outside a predefinable intended pressure range ([pu,po]).Type: GrantFiled: February 10, 2004Date of Patent: December 12, 2006Assignee: BEHR GmbH & Co.Inventors: Walter Demuth, Rainer Heilig, Volker Kirschner, Martin Kotsch, Hans-Joachim Krauss, Hagen Mittelstrass, Harald Raiser, Michael Sickelmann, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20060243432Abstract: The invention related to a flat tube (1) comprising a return bend section (3), inside of which the flat tube (1) is bent back in such a manner that both planar tube sections (2a, 2b) thereof, which are connect to the return bend section, extend in a longitudinal direction with opposite flow-through directions (4a, 4b) and with longitudinal axes (5a, 5b) that are offset with regard to one another at least in the transverse direction (y). The invention provides that the return bend section (3) is formed in such a manner that a main bending axis (A) extends parallel to the flat tube to be plane and at a predeterminable angle to the tube longitudinal extension, whereby the flat tube plane is determined by the longitudinal and width extension of the flat tube (1).Type: ApplicationFiled: February 11, 2004Publication date: November 2, 2006Inventors: Walter Demuth, Wolfgang Geiger, Martin Kotsch, Michael Kranich, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20060124288Abstract: The invention relates to a heat exchanger used, in particular for motor vehicle air-conditioning systems with a liquid coolant. In a preferred variant, the used coolant is embodied in the form of carbon dioxide. The inventive heat exchanger comprises at least one supply duct, an exhaust line, two heat-exchanging units which are provided with at least one distribution space and one accumulating space and at least one circulating system. Each heat-exchanging unit is provided with at least one dividing system for dividing at least one distribution space or one accumulating space into two partial spaces. Said heat exchanger also comprises a flow actuating system connecting the heat-exchanging units to each other. The flow cross sections or the totality thereof arranged before and after said flow actuating device have a predetermined ratio therebetween.Type: ApplicationFiled: November 6, 2003Publication date: June 15, 2006Applicant: BEHR GmbH & CO. KGInventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter, Gerrit Wolk
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Publication number: 20050223738Abstract: The invention relates to a device for exchanging heat, especially for using in motor vehicle air-conditioning installations comprising at least one distribution or collection chamber for a fluid, at least one flow device which is provided with at least one first flow connection section on the end thereof, and at least one second flow connection section on the end thereof, the first flow connection section being connected to the second flow connection section by means of at least one pipe section. According to the invention, at least one of the flow connection sections is twisted at least once, one flow connection section is connected to the collection chamber, and the other flow connection section is connected to the distribution chamber.Type: ApplicationFiled: July 22, 2003Publication date: October 13, 2005Applicant: BEHR GmbH & CO. KGInventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20050150108Abstract: The invention relates to a heat carrier comprising at least one collector pipe (1) for receiving the ends of flat pipes (10a), especially for a CO2 air conditioning unit for motor vehicles. The collector pipe (1) is formed by an open hollow profiled section (7) with edges (8, 9) forming a continuous longitudinal slit extending in a longitudinal direction and the ends of the flat pipes (10a), which are twisted at an angle of 90°, are received in a fluidically tight manner in the longitudinal slot. According to the invention, the edges (8,9) partially abut, forming a separating joint (4) and are partially rolled back, forming receiving openings for the ends of the flat pipes (10a). The receiving openings are produced by plastic deformation.Type: ApplicationFiled: May 7, 2003Publication date: July 14, 2005Inventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20050103486Abstract: The invention relates to a heat exchange comprising tubes (2,3) that can be flown through along a number of hydraulically parallel flow paths (2c, 2d) that are comprised of sections.Type: ApplicationFiled: December 19, 2002Publication date: May 19, 2005Inventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20050039901Abstract: The invention relates to a heat exchanger comprising tubes (1) and at least one end piece, which has a tube bottom that, in turn, has a bottom plate (8), a baffle plate (12) and a covering plate (16).Type: ApplicationFiled: December 19, 2002Publication date: February 24, 2005Inventors: Walter Demuth, Martin Kotsch, Michael Kranich, Hans Krauss, Hagen Mittelstrass, Martin Kotsch, Michael Kranich, Hans Krauss, Hagen Mittelstrass, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20050006073Abstract: The invention relates to a device for exchanging heat, particularly for use in motor-vehicle air-conditioning systems, comprising at least one coolant, at least one collant inlet (3), and at least one coolant outlet (4), which lead into one head pipe (7, 8, 9), whereby the head pipe (7, 8, 9) is divided into at least one inlet section (41?) and into at least one outlet section (42?) by at least one separating element (40). The device for exchanging heat comprises at least one flow-through element (19), which has at least two flow paths situated at least partially parallel to one another, and at least one cross-distrubitor (10?, 10?, 11?, 11?, 12) via which the flow paths of the flow-through element (19) are fluid-connected so that the inlet section is fluid-connected to the outlet section of the head pipe (7, 8, 9).Type: ApplicationFiled: December 19, 2002Publication date: January 13, 2005Inventors: Walter Demuth, Martin Kotsch, Michael Kranich, Christoph Walter, Karl-Heinz Staffa
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Publication number: 20050006072Abstract: The invention relates to a heat exchanger, particularly a radiator for a heating or air conditioning unit in motor vehicles, which cools a coolant. Said heat exchanger (1) is penetrated by air, comprises collector pipes (S1, S2, S2, S4) and several essentially horizontally disposed pipes (5), and is divided into several partial blocks (T1, T2, T3, T4). The surfaces of the inventive partial blocks are selected according to the dimensions of structural space-related zones having different air temperatures inside the assembly space of the heat exchanger, the partial block which is first penetrated by the coolant being arranged within a structural space-related zone having a higher air temperature, preferably within the zone having the highest air temperature.Type: ApplicationFiled: July 3, 2003Publication date: January 13, 2005Inventors: Walter Demuth, Martin Kotsch, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20040159114Abstract: The invention relates to a method of refrigerant level monitoring in a refrigerant circuit of an air-conditioning or heat-pump system having a compressor and a refrigerant which may, depending on the operating point, be operated in the supercritical range. The method includes standstill level monitoring with the compressor switched off and/or in-operation level monitoring with the compressor switched on. In the case of in-operation level monitoring, the refrigerant overheat (dTü) at the evaporator is registered and, in the event of excessive overheat, it is concluded that there is underfilling. At a standstill, the pressure and temperature of the refrigerant are registered, and it is concluded that there is an improper refrigerant filling level if the pressure (pKM) lies below a minimum pressure value (pmin) or the temperature (TKM) lies above a maximum saturation temperature value (Ts) with the pressure being outside a predefinable intended pressure range ([pu,po]).Type: ApplicationFiled: February 10, 2004Publication date: August 19, 2004Applicant: BEHR GmbH & CO.Inventors: Walter Demuth, Rainer Heilig, Volker Kirschner, Martin Kotsch, Hans-Joachim Krauss, Hagen Mittelstrass, Harald Raiser, Michael Sickelmann, Karl-Heinz Staffa, Christoph Walter
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Patent number: 6772518Abstract: The invention relates to a method for forming at least one flat-tube insertion slot in a header tube. A sawcut is introduced into the header tube during a sawing step, and the slot is configured, during a subsequent punching step, by means of a slot punch, which punches into the region of the sawcut. A rimmed opening can be configured during the punching step by using a slot punch with a larger width and/or length relative to the sawcut. The sawcut is preferably introduced to a depth less that the wall thickness of the header tube. The respective web region(s) between chamber of a multi-chamber header tube can be compressed during the punching operation to a level lower than that of a header-tube wall region functioning as a flat-tube insertion stop, in order to form a chamber-connecting duct.Type: GrantFiled: January 22, 2002Date of Patent: August 10, 2004Assignee: Behr GmbH & Co.Inventors: Walter Demuth, Wolfgang Geiger, Martin Kotsch, Hans-Joachim Krauss, Hagen Mittelstrass, Harald Raiser, Michael Sickelmann, Karl-Heinz Staffa, Christoph Walter
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Publication number: 20040103535Abstract: The invention relates to a method for forming at least one flat-tube insertion slot in a header tube. A sawcut is introduced into the header tube during a sawing step, and the slot is configured, during a subsequent punching step, by means of a slot punch, which punches into the region of the sawcut. A rimmed opening can be configured during the punching step by using a slot punch with a larger width and/or length relative to the sawcut. The sawcut is preferably introduced to a depth less that the wall thickness of the header tube. The respective web region(s) between chamber of a multi-chamber header tube can be compressed during the punching operation to a level lower than that of a header-tube wall region functioning as a flat-tube insertion stop, in order to form a chamber-connecting duct.Type: ApplicationFiled: November 21, 2003Publication date: June 3, 2004Applicant: BEHR GmbH & Co.Inventors: Walter Demuth, Wolfgang Geiger, Martin Kotsch, Hans-Joachim Krauss, Hagen Mittelstrass, Harald Raiser, Michael Sickelmann, Karl-Heinz Staffa, Christoph Walter