Abstract: A lightwave oven for heating food in a cooking chamber includes an oven housing, a drawer that can be moved out and in through an opening in the oven housing and has a bottom plate, side walls, and a rear wall that bound the cooking chamber, and a front plate to close the opening in the oven housing. A top plate is disposed above the drawer. The top plate can be moved relative to the drawer in the oven housing, rests on the drawer when in an operating position, and, as a result, bounds the cooking chamber of the drawer from above. Such a lightwave oven is configured to simplify and make easier the cleaning of the cooking chamber, and can be constructed cost-effectively and, furthermore, can be used flexibly.

Abstract: A microwave device includes a cooking space disposed in a housing, at least one microwave source, and at least one further radiation source, as an alternative to the microwave source, which is protected from microwaves from the microwave source by a shielding grid. At least one grid wall of the shielding grid has a radiation reflector by which it is possible for rays from the alternative radiation source to be reflected into the cooking space.

Abstract: A microwave device includes a cooking space disposed in a housing, at least one microwave source, and at least one further radiation source, as an alternative to the microwave source, which is protected from microwaves from the microwave source by a shielding grid. At least one grid wall of the shielding grid has a radiation reflector by which it is possible for rays from the alternative radiation source to be reflected into the cooking space.

Abstract: A lightwave oven for heating food in a cooking chamber includes an oven housing, a drawer that can be moved out and in through an opening in the oven housing and has a bottom plate, side walls, and a rear wall that bound the cooking chamber, and a front plate to close the opening in the oven housing. A top plate is disposed above the drawer. The top plate can be moved relative to the drawer in the oven housing, rests on the drawer when in an operating position, and, as a result, bounds the cooking chamber of the drawer from above. Such a lightwave oven is configured to simplify and make easier the cleaning of the cooking chamber, and can be constructed cost-effectively and, furthermore, can be used flexibly.

Abstract: A microwave device includes a cooking space disposed in a housing, at least one microwave source, and at least one further radiation source, as an alternative to the microwave source, which may be protected from microwaves by a protective device. The protective device has a control unit by which it is possible to establish a protective state for the alternative radiation source.

Abstract: A lightwave oven includes a cooking chamber, at least one wall having a translucent region, at least one duct separated from the chamber by the wall, the duct having at least one inlet opening supplying cooling air therein and at least one outlet opening discharging the cooling air, at least one lightwave heating device heating food in the chamber, the heating device having at least one rod-shaped radiant lamp producing lightwaves, the radiant lamp being disposed within the duct and having a longitudinal extent, and at least one reflector surface for reflecting the lightwaves produced by the radiant lamp into the chamber, and the inlet opening and the outlet opening being disposed to direct the cooling air in the duct to flow substantially at right angles to the longitudinal extent of the radiant lamp.

Abstract: A lightwave oven includes a cooking chamber and at least one lightwave heating device that can be moved to and fro on a travel path between a first position and a second position. To distribute the lightwave energy emitted by the lightwave heating device as uniformly as possible in the entire lightwave oven, the lamp reflector is pivotally disposed in the lightwave oven, which achieves an improvement in the browning of edges of food to be cooked.

Abstract: A lightwave oven having a cooking chamber and at least one lightwave heating device for heating food in the cooking chamber, and at least one reflector for reflecting the lightwaves produced by the lightwave heating device in the direction of the food and improve thorough cooking and browning of the food. In addition to the radiant lamps of high color temperature, separate radiant lamps of low color temperature are provided to also improve browning of the food. In each case, two radiant lamps of different color temperature can be fixed to a common holder, the holder being held on a movement device such that it can be pivoted, and the radiant lamps radiating light in different directions.

Abstract: A lightwave oven includes a lightwave heating device having at least one radiant lamp and at least one reflector having a reflective surface whose geometric shape is formed by a generatrix. Improved thorough cooking and browning of food in the oven is achieved by using a common radiant lamp both for browning and for cooking, its reflector having a reflective surface produced from a generatrix having a curve lying between an elliptical and a parabolic curve, whose vertices lie at a common first point and whose focal points lie at a common second point.

Abstract: A method for producing a rotor of a turbine, particularly a steam turbine, from individual rotor parts being welded together to make a unit, includes assembling parts of a rotor required for a given turbine in a modular system having supply steam shaft ends, single rotor disks, double rotor disks, exhaust steam shaft ends and optionally condensation-end-stage drums, for producing various rotor variants. The parts of the rotor are produced at parallel times according to orders and/or taken from stock. Still required remachining of the assembled rotor during production of the parts, especially machining grooves in final form for receiving rotor blade roots in the remachining step, is minimized. The parts are joined together with low warping with a beam of high power density, preferably an electron beam. Required rotor blades are selected and the rotor disks are equipped with the blades before or after the parts are joined together. The rotor put together from the individual parts is machined in final form.