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Temperature measurement in a cooking vessel

A technology of cooking containers and sensors, applied in the field of induction heating devices, can solve problems such as difficulties

Active Publication Date: 2014-06-04
E G O ELEKTRO GERAETEBAU GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, effects associated with cooking food, especially when preparing foods rich in starch and protein, make it difficult to determine the cooking temperature unambiguously from the temperature at the bottom of the cooking vessel

Method used

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  • Temperature measurement in a cooking vessel
  • Temperature measurement in a cooking vessel

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Experimental program
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Embodiment Construction

[0023] figure 1 A system with an inductively heatable cooking vessel 2 with a sensor device 12 and an induction heating device 16 is shown.

[0024] The sensor device 12 has a temperature sensor 1 in the form of a conventional NTC temperature sensor for the temperature of the cooked food detected by heating the cooking vessel 2 , wherein the sensor is for example in the form of a core temperature sensor (Kerntemperaturfühler). The form is arranged in the cooking container 2—for example, in the side wall of the cooking container 2 or in a cavity not shown at the bottom of the cooking container 2 or on a flexible conveying line that can move freely in the cooking container 2 an antenna in the form of a coil 6 which can be inductively or magnetically coupled to the induction heating coil 5 of the induction heating device; an energy supply device in the form of a rectifier—for example a bridge rectifier—11, which is connected to the coil 6 Output voltage rectification, wherein th...

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Abstract

In a method for transferring data of a sensor (1), which is associated with a cooking vessel that can be inductively heated, to a reading device (3), a high-frequency control voltage (UA) is produced from a mains alternating voltage (UN) by means of a converter (4), wherein the high-frequency control voltage is applied to a resonant circuit (15) having an induction heating coil (5) in order to produce a high-frequency alternating magnetic field in order to heat the cooking vessel. The method comprises the following steps: interrupting the application of the high-frequency control voltage to the resonant circuit during a specified first time period around a zero crossing of the mains alternating voltage in order to cause a self-resonant oscillation of the resonant circuit; changing an impedance of an antenna (6), which is inductively coupled to the induction heating coil and which is associated with the cooking vessel, according to data of the sensor to be transferred, during a second time period that lies within the first time period; and decoding the transferred data of the sensor in the reading device, in that a resonance frequency, in particular a resonance frequency change, of the self-resonant oscillation of the resonant circuit is evaluated.

Description

technical field [0001] The invention relates to a method for transmitting data assigned to a sensor of an inductively heatable cooking vessel to a reading device, a sensor device for an inductively heatable cooking vessel, a cooking vessel, a An induction heating device and a system. Background technique [0002] In general, detecting the temperature of the cooked food as accurately as possible is necessary for precise control or regulation of the cooking process. [0003] DE 10 2009 047 185 A1 describes a method and a device which make it possible to ascertain the temperature of the bottom of a cooking vessel heated by means of an induction heating coil by analyzing specific parameters. However, effects associated with cooking the food, especially when preparing foods rich in starch and protein, make it difficult to determine the cooking temperature unambiguously from the temperature at the bottom of the cooking vessel. [0004] Therefore it may be necessary to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/06
CPCH05B6/062H05B2213/06H05B2213/07G01K2207/06A47J27/004H05B6/1236H05B6/1254
Inventor S.朗
Owner E G O ELEKTRO GERAETEBAU GMBH
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