Patents by Inventor Thomas Nawrot
Thomas Nawrot 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: 20100281707Abstract: An exhaust air dryer having a housing that encloses an inner space, wherein the following structures are arranged in the inner space: a drying chamber for items to be dried; a supply air duct between a first supply air inlet and the drying chamber to supply air; a heater to heat the supply air in the supply air duct; a fan to guide heated supply air through the drying chamber; and an exhaust air duct arranged between the drying chamber and an exhaust air outlet on the housing to exhaust air. The fan is a dual-flow fan having a first flow path and a second flow path, wherein the first flow path is arranged in the exhaust air duct and the second flow path is arranged in the supply air duct.Type: ApplicationFiled: December 18, 2008Publication date: November 11, 2010Applicant: BSH BOSCH UND SIEMENS HAUSGERATE GMBHInventors: Thomas Nawrot, Andreas Ziemann
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Patent number: 7748897Abstract: A method for monitoring the proper functioning of a temperature-dependent resistor, particularly a NTC resistor, for measuring the temperature of a medium heated by a heat source. Said medium is preferably the air flow in a clothes dryer for drying clothes. In order to increase the safety of a device, in particular a clothes dryer, where the temperature-dependent resistor is used in combination with a heat source, it is checked, once the heat source is switched on, whether the temperature measured by the resistor after a first predetermined period of time following the switching on of the heat source falls below a predetermined temperature threshold value. If this is the case, monitoring of a resistor-temperature curve characteristic of the temperature-dependent resistor is carried out.Type: GrantFiled: February 8, 2006Date of Patent: July 6, 2010Assignee: BSH Bosch und Siemens Hausgeraete GmbHInventors: Kai-Uwe Bache, Thomas Nawrot, Ulrich Nehring, Andreas Ziemann
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Publication number: 20100155039Abstract: A domestic appliance includes an open air duct and a flow cross-section adjuster in the air duct for adjusting a flow cross-section of the air duct. The flow cross-section adjuster includes rotatably mounted blades for noise dampening purpose. The air duct and the flow cross-section adjuster are in a cooling air inflow region relative to a heat exchanger or a compressor of the domestic appliance.Type: ApplicationFiled: November 30, 2009Publication date: June 24, 2010Applicant: BSH BOSCH UND SIEMENS HAUSGERATE GMBHInventors: Rainer Ediger, Thomas Nawrot, Werner Nühse
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Patent number: 7644514Abstract: A clothes dryer which comprises a housing, a rotatable drum for receiving the clothes and a bearing for rotatably receiving the drum in the housing. In order to protect the bearing from overheating, a cooling air device for cooling the bearing is provided.Type: GrantFiled: December 23, 2004Date of Patent: January 12, 2010Assignee: BSH Bosch und Siemens Hausgeraete GmbHInventors: Reinhard Heyder, Thomas Nawrot, Andreas Ziemann
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Publication number: 20090269219Abstract: A sound absorber for a flow of gas which is subjected to a noise, including a pipe section which is substantially straight along an axis, is bounded by two openings which are situated one behind the other with respect to the axis and which has a guide body which is fitted into the pipe section approximately on the axis and is held by at least one spoke. A projection of the guide body parallel to the axis on a surface which contains the openings covers this opening substantially completely, and gas can flow around the guide body and an inner surface which faces said guide body substantially without turbulence in the flow.Type: ApplicationFiled: June 28, 2006Publication date: October 29, 2009Applicant: BSH Bosch und Siemens Hausgerate GmbHInventors: Johannes Langbein, Thomas Nawrot, Andreas Ziemann
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Publication number: 20090229141Abstract: An exhaust air dryer with a drum for drying damp laundry with warm process air, a heating device for the process air into which leads a first process air channel upstream of the drum, into which a supply air channel and a first end of a circulating air channel discharge, a second process air channel downstream of the drum, into which an exhaust air channel and a second end of the circulating air channel discharge, and a fan including an impeller with a blade configuration, the impeller having blades which are straight and/or curved backwards in the direction of movement toward the drum.Type: ApplicationFiled: March 12, 2009Publication date: September 17, 2009Applicant: BSH Bosch und Siemens Hausgerate GmbHInventors: Thomas Nawrot, Andreas Stolze
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Publication number: 20090151192Abstract: The household appliance has an exhaust air outlet to which an exhaust air guide duct can be connected, with the household appliance having an air condition sensor in the area of the exhaust air outlet.Type: ApplicationFiled: December 12, 2008Publication date: June 18, 2009Applicant: BSH Bosch und Siemens Hausgerate GmbHInventor: Thomas Nawrot
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Publication number: 20090139107Abstract: The invention relates to an exhaust air dryer with a drying compartment for objects to be dried, a supply air duct upstream of the drying compartment, a first fan for the supply of process air from a supply air inlet to the drying compartment and to an exhaust air outlet, an exhaust air duct between the drying compartment and the exhaust air outlet and a heat pump, with a heat sink in the exhaust air duct and a heat source in the supply air duct, characterized in that the first fan in the supply air duct is arranged between the supply air inlet and the heat source and a second fan in the supply air duct is arranged between the heat source and the drying compartment.Type: ApplicationFiled: November 17, 2008Publication date: June 4, 2009Applicant: BSH Bosch und Siemens Hausgeraete GmbHInventors: Klaus Grunert, Thomas Nawrot, Guenter Steffens, Andreas Stolze
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Publication number: 20090126220Abstract: A method for detecting the standstill of a drum in a tumble drier during the drying of damp laundry by means of process air which is heated by a heating device in an inflow channel in front of the drum and passes into an outflow channel after passage through the drum, wherein the conductivity of the laundry is measured in the drum and the change in the conductivity is evaluated with regard to the detection of the standstill of the drum. Here, the temperature of the process air is measured by means of a temperature sensor which is arranged in the outflow channel after the drum, and the change in the temperature of the process air is evaluated with regard to the detection of the standstill of the drum. The invention also relates to a tumble drier which is suitable for this purpose.Type: ApplicationFiled: May 23, 2007Publication date: May 21, 2009Applicant: BSH Bosch und Siemens Hausgrate GmbHInventors: Thomas Nawrot, Ulrich Nehring
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Publication number: 20090113747Abstract: The invention relates to a washing household device, in particular to a clothes dryer, that includes an air-supply device which is arranged on a rear side area thereof and is provided with a closed self-contained cross-section flow channel.Type: ApplicationFiled: February 23, 2006Publication date: May 7, 2009Applicant: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBHInventors: Thomas Nawrot, Hans-Werner Stahn, Andreas Stolze, Andreas Ziemann
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Publication number: 20090077828Abstract: An electric switching circuit with a first current path for operating an electric motor and with a second current path for operating a first heater. The electric motor drives a fan during which an air flow created by the fan is heated by the first heater. A switch for opening or closing the second current path in response to an actual operating state of the electric motor is, in the second current path, connected in series to the first heater. The switch is designed as a bimetallic switch and a second heater is assigned thereto that is arranged and designed for detecting the actual operating state of the electric motor and for controlling the bimetallic switch by changing its ambient temperature in response to the detected operating state.Type: ApplicationFiled: February 14, 2006Publication date: March 26, 2009Applicant: BSH Bosch und Siemens Hausgeräte GmbHInventors: Thomas Nawrot, Bert Peters, Guido Sattler
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Publication number: 20090028214Abstract: A method for monitoring the proper functioning of a temperature-dependent resistor, particularly a NTC resistor, for measuring the temperature of a medium heated by a heat source. Said medium is preferably the air flow in a clothes dryer for drying clothes. In order to increase the safety of a device, in particular a clothes dryer, where the temperature-dependent resistor is used in combination with a heat source, it is checked, once the heat source is switched on, whether the temperature measured by the resistor after a first predetermined period of time following the switching on of the heat source falls below a predetermined temperature threshold value. If this is the case, monitoring of a resistor-temperature curve characteristic of the temperature-dependent resistor is carried out.Type: ApplicationFiled: February 8, 2006Publication date: January 29, 2009Applicant: BSH Bosch und Siemens Hausgerate GmbhInventors: Kai-Uwe Bache, Thomas Nawrot, Ulrich Nehring, Andreas Ziemann
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Publication number: 20070163144Abstract: A program-controlled laundry drier equipped with a rotary drum in which the material to be dried is inserted and moved during the drying process. The dryer comprising a heater for heating the drying air and a blower which guides the drying air stream into the interior of the drum. The axis of a current generator is mechanically coupled to the rotary drum and the output voltage of the current generator is applied to the excitation winding of a relay whose switching contacts switch the heating current circuit for the drying air.Type: ApplicationFiled: May 13, 2004Publication date: July 19, 2007Inventors: Lothar Dittmer, Thomas Nawrot, Andreas Ziemann
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Publication number: 20070151119Abstract: A clothes dryer which comprises a housing, a rotatable drum for receiving the clothes and a bearing for rotatably receiving the drum in the housing. In order to protect the bearing from overheating, a cooling air device for cooling the bearing is provided.Type: ApplicationFiled: December 23, 2004Publication date: July 5, 2007Applicant: BSH Bosch und Siemens Hausgerate GmbHInventors: Reinhard Heyder, Thomas Nawrot, Andreas Ziemann
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Patent number: 7149416Abstract: A heater for a washer-dryer includes a duct in which heating elements for heating the air flowing through the duct are disposed. A device for increasing the airflow in the area of a heating element is provided in the duct to improve the transportation of heat away from the heating element. The airflow device can be one or more projections on a wall of the duct extending into the duct and can be disposed upstream of the heating element with respect to a flow direction of the air, adjacent the heating element, and/or downstream of the heating element.Type: GrantFiled: June 14, 2004Date of Patent: December 12, 2006Assignee: BSH Bosch and Siemens Hausgeraete GmbHInventors: Thomas Nawrot, Bert Peters, Andreas Ziemann
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Publication number: 20060248746Abstract: A device for determining the conductance of laundry in a drier. The device comprises at least two electrodes (2) and means for dissipating heat from at least one part of at least one of said electrodes (2). The invention further relates to a drier comprising at least one area (5) for receiving laundry and at least two electrodes (2) for measuring the conductance of the laundry, at least one of the electrodes (2) at least partly bordering said receiving area (5). Means for cooling at least one part of at least one of the electrodes (2) are also provided inside the drier. Also disclosed is a method for preventing the formation of layers on electrodes (2) used for measuring conductance in a drier.Type: ApplicationFiled: December 20, 2003Publication date: November 9, 2006Applicant: BSH Bosch und Siemens Hausegeräte GmbHInventors: Lothar Dittmer, Harald Moschütz, Thomas Nawrot, Andreas Ziemann
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Patent number: 6918194Abstract: A heating configuration for a drier, particularly for a laundry drier, has a burner with a burner head, a first heating channel with an inlet opening and an outlet opening, and a second heating channel with an inlet opening and an outlet opening. The cross-sectional area of the second heating channel is greater than the cross-sectional area of the first heating channel. The burner head projects into the inlet opening of the first heating channel and the outlet opening of the first heating channel projects into the inlet opening of the second heating channel. The first heating channel is disposed in the lower section of the second heating channel so that a uniform temperature distribution is achieved in the second heating channel.Type: GrantFiled: July 16, 2004Date of Patent: July 19, 2005Assignee: BSH Bosch und Siemens Hausgeräte GmbHInventors: Heinz Werner Freese, Thomas Nawrot, Günter Steffens
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Publication number: 20050050766Abstract: A heating configuration for a drier, particularly for a laundry drier, has a burner with a burner head, a first heating channel with an inlet opening and an outlet opening, and a second heating channel with an inlet opening and an outlet opening. The cross-sectional area of the second heating channel is greater than the cross-sectional area of the first heating channel. The burner head projects into the inlet opening of the first heating channel and the outlet opening of the first heating channel projects into the inlet opening of the second heating channel. The first heating channel is disposed in the lower section of the second heating channel so that a uniform temperature distribution is achieved in the second heating channel.Type: ApplicationFiled: July 16, 2004Publication date: March 10, 2005Inventors: Heinz Freese, Thomas Nawrot, Gunter Steffens
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Publication number: 20050047763Abstract: A heater for a washer-dryer includes a duct in which heating elements for heating the air flowing through the duct are disposed. A device for increasing the airflow in the area of a heating element is provided in the duct to improve the transportation of heat away from the heating element. The airflow device can be one or more projections on a wall of the duct extending into the duct and can be disposed upstream of the heating element with respect to a flow direction of the air, adjacent the heating element, and/or downstream of the heating element.Type: ApplicationFiled: June 14, 2004Publication date: March 3, 2005Inventors: Thomas Nawrot, Bert Peters, Andreas Ziemann
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Publication number: 20050016520Abstract: A heating configuration for a drier, particularly a laundry drier, has a burner with a burner head, a first heating channel with an inlet opening and an outlet opening, and a second heating channel with an inlet opening and an outlet opening. The cross-sectional area of the second heating channel is greater than the cross-sectional area of the first heating channel. The burner projects through its inlet opening into the first heating channel and an outlet portion of the first heating channel projects into an inlet portion of the second heating channel. A guide device is provided in an upper section of the first heating channel adjacent to the outlet opening thereof in order to downwardly deflect hot gases which flow from the burner head in a direction towards the outlet opening of the second heating channel.Type: ApplicationFiled: July 16, 2004Publication date: January 27, 2005Inventors: Heinz Freese, Thomas Nawrot, Gunter Steffens