Kurt Wolf & Co. Kg

Fissler Gmbh

Fissler Bmbh

Kurt Wolf

Wolfram K Andre

A control device for controlling the heating capacity of the heating element of a cooking or heating plate, on which a cooking vessel, roasting vessel, or the like, can be placed and heated. The temperature on or in the cooking vessel is determined by means of a temperature sensor, conveyed to a logic circuit, and used in this for the control of the heating element by means of an output stage in dependence on the actual temperature determined and/or the temperature increase in the heating phase. In order for control of the heating output of the heating element to also be performed during a roasting process with a roasting pan placed on the cooking or heating plate, a program selection switch provided to select between various cooking processes, such as rapid simmering, steaming, warming and the like has a coordinated switching position for each and for a roasting process has an additional switching position. The heating output is controlled during the heating phase by means of preset programs of the logic circuit by switching the heating element on and off by means of the output stage in dependence on the actual temperature detected by means of the temperature sensor and/or the temperature increase detected from the temperature curve.

Device for controlling the heating output of the heating element of a

The invention involves a method for measuring the temperature in a heating system of the type having an electrically heated hot plate with a filled cooking vessel on it and a radiation pick-up located at varying distances from the side of the vessel and pointed at it which emits a signal indicating the temperature of the substance in the vessel based upon radiation from an area on the side of the vessel as detected by the radiation measurement field of the radiation pick-up, the radiation intensity of which decreases as a square of increasing distance. To compensate for the effect on measurements of spurious radiation form the changing position of the vessel on the hot plate, the invention involves adjusting the angle of a non-intersecting radiation measurement field to obtain corresponding reduction in the area of radiation detetion on the vesel for increasing distances between vessel and radiation pick-up.

System for measuring temperature of a filled vessel on a hot plate

A device for determining the temperature of a glass ceramic plate heated using heat coils or halogen lamps with a temperature sensor which emits a signal for a control circuit corresponding to the temperature of the glass ceramic plate. The heat coils or the halogen lamps are positioned in the internal space of a cylindrical vessel-like insulation support, and in which the surrounding wall of the insulation body, under spring tension, abuts on the glass ceramic plate heated by the radiation of the heating coils or the halogen lamps. Adequate control precision can be achieved by having the temperature sensor positioned in a recess in the surrounding wall of the insulation body, and is in a thermally-conductive connection with the lower side of the glass ceramic plate. The recess for the temperature sensor is positioned at a distance to the internal space of the insulation support and thus the dynamics of the control behavior can be adjusted to low hysteresis and optimized.

Device for determining the temperature of a glass ceramic plate heated

The invention relates to controlling the simmering or cooking time in a cooking vessel which can be heated by means of an electrical cooking plate with a control circuit, in which the temperature in or on the cooking vessel is determined in the heating phase and utilized by the control circuit to regulate the heat output of the cooking plate by shutting off the cooking plate at a length of time before the completion of the predetermined simmering or cooking time, the time before completion being greater the greater the heat quantity determined from data from the heating phase. With heating starting at a temperature between the temperature necessary for the initiation of a significant steam formation and the boiling temperature of the water, the time period from reaching the boiling temperature up to the reaching of a predetermined measuring temperature lying slightly above the boiling temperature is measured, and the time period determined is used for the determination of the time period for the premature disconnection of the cooking plate which must be reduced by an amount which is greater the greater the starting temperature was above the temperature for initation of steam upon switching on the cooking plate.

Controlling the simmering or cooking time in a cooking vessel

A device for regulating the heating element of a cooking vessel of the type with an input device for setting a preselected cooking temperature in the range of the boiling point of water, a device for measuring the temperature on or in the cooking vessel, and a control circuit for maintaining cooking temperature constant at the preselected level. The device includes apparatus for altering the cooking temperature as a function of the measured atmospheric pressure or the altitude above sea level at the site of use of the cooking vessel, such adjustment being in accordance with the dependence of the boiling point of water on atmospheric pressure or altitude above sea level.

Device for regulating the heating element of a cooking vessel

This invention relates to controlling the simmering or cooking time in a cooking vessel which can be heated by means of an electrical cooking plate with a control circuit, in which the temperature in or on the cooking vessel is determined and utilized by the control circuit to regulate the heat output of the cooking plate, in which the simmering or cooking time can be set by means of an adjustable time element, in which the cooking plate can be shut off at a length of time bvefore the completion of the predetermined simmering or cooking time which is greater the slower that the rise of the temperature in the heating phase is, and in which, by using the heat content contained inthe cooking material after shutting off the cooking plate the simmering or cooking process is extended up to the preset simmering or cooking time. Starting temperatures which lie above room temperature distort the increase of the temperature in the heating phase, and thus the derivation of a measuring value initiating the premature switching off of the cooking plate. This invention provides for correcting the measure values in the heat phase in a predetermined manner so that the cooling process can nonetheless be determined.

Apparatus and process for controlling the simmering or cooking time in a

A process and apparatus for cooking food in a roasting vessel, in which the temperature in and around the roasting vessel is measured and used to regulate the cooking temperature according to a preset program by means of a control circuit which activates and deactivates an electric heating element. By controlling the heat output according to a preset program, whereby the program is effected when a predetermined temperature differential from the preset roasting temperature is reached, the cooking temperature can be controlled without overshooting the preset roasting temperature, even during high rates of temperature increase which occur during the heating cycle of the roasting operation.

Process and apparatus for roasting with a roasting vessel

An apparatus for measuring the temperature in a heating system comprising a cooking pot with cooking material positioned on a hot plate where a radiation receiver is arranged at a distance from the wall of the cooking pot and aligned with it, which receiver produces a temperature measurement signal corresponding to the temperature of the cooking material in the cooking pot. The temperature measurement signal is derived from a detected radiation area on the wall of the cooking pot which corresponds to the radiation measuring field of the radiation receiver. The effect of different distances of the cooking pot from the radiation receiver is automatically compensated for by aligning the center axis of the radiation measurement field at an acute angle to the support surface of the hot plate, so that the distance of the center of the detected radiation area from the bottom of the cooking pot increases with an increasing distance of the wall of the cooking pot from the radiation receiver.

Arrangement for measuring the temperature in a heating system comprising

An apparatus for controlling and adjusting heat output during the heating phase of a steam pressure cooking vessel. The steam pressure cooking vessel is heated by an electric heating element and the temperature inside the steam pressure cooking vessel is measured. The heating element is controlled by a control circuit and a program memory which operates in a simple way at various preset rapid cooking or vitamin preserving cooking temperatures as a function of the heating characteristics and controls the heat output so that the selected cooking temperature can be adjusted and maintained constant in the simplest possible way without overshooting.

Apparatus for controlling and adjusting heat output during the heating

An apparatus for controlling and adjusting heat output during the heating phase of a cooking vessel. The cooking vessel is heated by an electric heating element and the temperature inside the cooking vessel is measured. The heating element is provided with a control circuit and two program memories which operate as a function of the temperature increase characteristics during the simmer or warming cycles, whereby in the simmer cycle, both the first and second program memories are operative whereas in the warming cycle only the second program memory is operative in a similar manner as during the simmer cycle and over the same temperature differential but at different temperature values.

An apparatus is provided to control the cooking process in a pressure cooker heated by an electrical heating element. By measuring values related to the temperature-time characteristic curve during the heating up phase, the cooking system is operated in an energy saving manner utilizing the inertia of the system by switching off the heating element prematurely to maintain the desired cooking time. By providing an additional mode of operation, the cooking process can be carried out in several successive cooking phases while still providing the energy saving feature of prematurely switching off the heating element in all cooking phases.

Apparatus for controlling the cooking process in a pressure cooker

This invention provides an apparatus for measuring the temperature of the contents of a saucepan in a heating system comprising a saucepan and its contents placed on and heated by a heating element. The invention provides saucepans having radiating surfaces encircling the pan in a transition area between the bottom and side wall of the pan, a radiation sensor with a focusing device aligned with the radiating surface of the saucepan placed on the heating element, and provides for the radiation sensor to be spaced from the radiating surface at a distance corresponding to the focal point of the radiation focusing device.

Apparatus for temperature measurement in a saucepan heating system

The invention relates to a cooking vessel comprising a cooking pan and cover, especially a steam pressure cooker, to which a temperature-dependent resistor is attached as a temperature sensor with an attached computing device for the determination of the temperature inside the cooking pot, and for the transmission of electrical signals corresponding to the temperature detected. In order for the cooking vessel to be equipped for an exact measurement of temperature without greatly increasing costs, a measuring point covered by the handle is provided, to which a temperature sensor is attached. One of the handles of the cooking pot or cover carries a plug accommodation with connection contacts, which mechanically accommodates a computing device formed as a plug unit, and connects electrically with the temperature sensor.

Growing community of inventors

Wildbad, Germany

Kurt Wolf