Patents Assigned to Rational AG
  • Patent number: 7196292
    Abstract: A method for controlling a cooking process in the cooking chamber of a cooking device according to the point of condensation inside the cooking device includes introducing at least one cooking item and at least one accessory such as a gastronomic container, a plate, tin plate, a support, a suspended ladder, a kiln tray and/or kiln tray cart and/or at least one reference body into the cooking chamber; at least partially determining during the cooking process at least one climate parameter, especially one relating to temperature and moisture, in the cooking area, or on the cooking item, or on the accessory or on the reference body; determining the actual extent by which the point of condensation is exceeded or is not achieved on the cooking item, accessory and/or reference body; and adapting the climate parameter in the cooking chamber during the cooking process according to the extent by which the point of condensation is exceeded or not achieved such that the climate inside the cooking chamber, especially the
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: March 27, 2007
    Assignee: Rational AG
    Inventors: Judith Imgram, Andrea Jürgens, Katharina Wallenwein, Thomas Garner, Michael Greiner, Jürgen Klasmeier, Thomas Schreiner
  • Patent number: 7165942
    Abstract: The disclosure relates to a fan impeller including a base plate and a plurality of fan impeller blades fixed to the plate. The fan impeller blades are positioned in an essentially vertical manner on the base plate and have a substantially radial arrangement, each fan impeller blade including a front edge facing radially outwardly that is substantially perpendicular to the base plate, a rear edge facing radially inwardly that is substantially perpendicular to the base plate, an exterior surface located on the delivery side of the fan impeller and an interior surface located on the intake side of the fan impeller. At least one raised element is mounted and/or configured on the exterior surface of at least one selection of the fan impeller blades, the element being positioned at a distance from the base plate and extending substantially in a diagonal manner away from the base plate from the front edge to the rear edge of the fan impeller blades.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: January 23, 2007
    Assignee: Rational AG
    Inventors: Elmar Junker, Thomas Schreiner, Bruno Maas, Peter Kohlstrung, Manfred Breunig
  • Patent number: 7150891
    Abstract: A method for managing a cooking process in a cooking chamber according to a cooking program with one cooking process probe inserted at least partially into a product to be cooked in the cooking chamber for the detection of at least two temperature values by at least two temperature sensors, includes a determination by the cooking process probe of temperature curves of a surface temperature T0 of the product to be cooked, a core temperature KT of the product to be cooked, and/or a cooking chamber temperature. The method includes detection of a faulty insertion of the cooking process probe external to the product to be cooked by using recorded temperature curves, generation of at least one acoustic and/or optical warning signal, changing to an emergency program at least at such a time as the cooking process probe is arranged in the cooking chamber, and aborting the cooking program at least at such a time as the cooking process probe is arranged outside of the cooking chamber.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: December 19, 2006
    Assignee: Rational AG
    Inventors: Michael Greiner, Andrea Jürgena, Katharina Wallenwein, Jürgen Klasmeier, Jarosjay Klouda, Rene Markus, Christoph Reichmann
  • Patent number: 7048312
    Abstract: A walk-in chamber has a door opening closable by a door, which, when in the closed position can be either in a locked position or an unlocked position, dependent on the locking device, which includes a sliding bolt engageable with a locking bolt. To enable a person in the chamber to disengage the locking device, a safety mechanism is provided which enables moving the sliding bolt from an engaging position to a retracted position to enable a person to open the door.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: May 23, 2006
    Assignee: Rational AG
    Inventor: Hubert Brunner
  • Publication number: 20060035189
    Abstract: The disclosure relates to a pore burner, especially for cooking appliances, including a housing provided with at least one inlet for a gas/air mixture as a fuel and/or at least one inlet for air and/or at least one inlet for gas and/or at least one outlet for air and/or gas and/or waste gases. The housing includes at least one dimensionally stable, porous molded body formed of sintered metallic powder and/or pressed metallic wire mesh, on the surface of which and/or in the pore spaces of which are reaction zones for the flame development for forming a surface burner.
    Type: Application
    Filed: July 23, 2003
    Publication date: February 16, 2006
    Applicant: Rational AG
    Inventors: Karlheinz Berstecher, Franz Koch, Manfred Lichtenstern, Rainer Otminghaus, Stefan Rusche
  • Publication number: 20060013933
    Abstract: In a method and system for conducting a cooking process in a cooking chamber of a cooking appliance using a cooking process probe which is to be inserted at least partly into an item being cooked in the cooking chamber for detecting at least one variable of the item being cooked, at least at one predetermined point in time, non-insertion of the cooking process probe into the item being cooked is automatically monitored. If non-insertion is detected, at least one of a first warning signal is emitted, a changeover is made to an emergency program, and a cooking program is avoided.
    Type: Application
    Filed: March 13, 2003
    Publication date: January 19, 2006
    Applicant: Rational AG
    Inventors: Michael Fink, Gerd Funk
  • Patent number: 6959668
    Abstract: A method and steam generator includes a steam generator container having a heated wall surface, an inlet for a liquid and an outlet for removing the vaporized liquid or steam, a rotor, which is mounted for rotation in the container and causes a rotational flow of the liquid outwardly against the heated wall to cause vaporization. During rotation of the rotor, outer edges of the blades of the rotor contact the wall surface to either abrade or wipe deposits, such as lime, from the wall surface.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: November 1, 2005
    Assignee: Rational AG
    Inventors: Thomas Schreiner, Peter Kohlstrung, Bruno Maas, Peter Wiedemann, Elmar Junker
  • Patent number: 6772751
    Abstract: A cooking appliance includes a heater, a blower, a steam generator, a cooking chamber, a cooking chamber drain, a steam condenser and a cooking appliance drain, and the steam condenser is arranged between the cooking chamber drain and the cooking appliance drain. A fluid from the steam generator and from a washing liquid reservoir, which fluid includes water, a cleaning agent, a rinsing agent, a wetting agent, a decalcification agent and/or waste products arising when cooking a product in the cooking chamber can be distributed in the cooking chamber for the cleaning of the chamber.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: August 10, 2004
    Assignee: Rational AG
    Inventors: Martin Deuringer, Hubert Brunner, Elmar Junker, Manfred Breunig, Michael Herner, Judith Imgram, Peter Wiedemann
  • Patent number: 6755121
    Abstract: In a cooking chamber for a cooking device with at least one opening discharging into at least one pipe to a discharge and/or exhaust, at least one blower for generating excess pressure and/or low pressure in the cooking chamber is arranged in the at least one opening and/or in the at least one pipe.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: June 29, 2004
    Assignee: Rational AG
    Inventor: Jaroslav Klouda
  • Patent number: 6752621
    Abstract: A method for setting the performance of a gas operating cooking device by setting a complete combustion of the fuel gas/air mixture supplied to the gas burner of the cooking device.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: June 22, 2004
    Assignee: Rational AG
    Inventors: Stefan Rusche, Thomas Schreiner
  • Patent number: 6478034
    Abstract: A method and apparatus for cleaning a cooking chamber of a cooking apparatus has at least one nozzle pivotably connected to a base, which is detachably connected on a wall of the cooking chamber in an area of a supply line for a liquid which is forced through each spray nozzle to cause a rotation of the nozzle and a pivoting of the nozzle around a pivot point to spray surfaces of the cooking chamber.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: November 12, 2002
    Assignee: Rational AG
    Inventors: Wilfried Durth, Lorenz Scholl, Hubert Brunner
  • Patent number: 6410890
    Abstract: In an apparatus and a method for cleaning the inside of a cooking device having a cooking chamber and a blower chamber separated from the cooking chamber via air baffles, an impeller is arranged in the blower chamber for generating a conveying stream in the cooking chamber as well as in the blower chamber, whereby at least one spray nozzle for spraying at least one fluid, such as a cleaning agent, rinse agent, clear rinse agent, decalcification agent, water and/or the like, faces toward the impeller, whereby the spray jet of the at least one spray nozzle in the blower chamber is directed opposite the conveying stream of the impeller.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: June 25, 2002
    Assignee: Rational AG
    Inventor: Peter Kohlstrung
  • Publication number: 20020007829
    Abstract: An insulating glass door for a cooking chamber of a cooking appliance is formed by an insulating glass window composed of two individual panes which are spaced apart for forming an interspace therebetween, which is sealed by an insulating material. The door includes at least one door component which is integrated and extends between the two spaced-apart panes.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 24, 2002
    Applicant: Rational AG
    Inventors: Peter Wiedemann, Willi Winter, Hermann Rabe
  • Patent number: 6318245
    Abstract: A cooking device has a cooking chamber, a ventilation device in the form of a ventilating fan wheel or the like and a heating device plus a catalyst. Air from the cooking chamber, including greasy vapors, odor particles, and/or hydrocarbons, can be directed in a finely-atomized form onto the catalyst by the ventilation device. The catalyst purifies the air directed thereon and releases energy in the form of heat during purification, which heat can be distributed inside the cooking chamber by the ventilation device.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: November 20, 2001
    Assignee: Rational AG
    Inventors: Wilfried Durth, Peter Wiedemann, Gerd Funk
  • Patent number: 6299921
    Abstract: A method for cooking in a cooking device which has a cooking chamber and a measuring device to detect variables pertaining to a given state of food which is being cooked. The variables vary according to the cooking process. The cooking process is carried out according to at least one measured value corresponding to a cooking state variable. The cooking process is also carried out according to one of several values corresponding to a derivative of a cooking state variable obtained as a function of a duration of the cooking process.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: October 9, 2001
    Assignee: Rational AG
    Inventors: Erhard Löffler, Peter Kohlstrung, Thomas Schweinfest-Feile
  • Patent number: 6267045
    Abstract: The invention relates to a cooking device with a cooking chamber, a heating device, a circulating system, an energy storage and extraction system and a measuring and regulating system connected to the heating device, the circulating system and the energy storage and extraction system.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: July 31, 2001
    Assignee: Rational AG
    Inventors: Peter Wiedemann, Peter Kohlstrung