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Method for heating liquid in an electric kettle

A technology for electric kettles and water heating, which is applied in the direction of boiling water appliances, applications, kitchen utensils, etc., to reduce the risk of injury

Inactive Publication Date: 2005-11-23
BRAUN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all known safety devices for the corresponding heating elements assume that the sensor is working properly

Method used

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  • Method for heating liquid in an electric kettle
  • Method for heating liquid in an electric kettle
  • Method for heating liquid in an electric kettle

Examples

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Embodiment Construction

[0023] The following is for reference figure 1 An exemplary illustration of a flow chart of FIG. 1 , illustrating an advantageous embodiment of regulating the heating process of an electric kettle according to the present invention. The electric kettle includes an electric heating element with an electronic regulator (not shown) that registers the temperature and heating time via sensors. The regulator also includes non-volatile electronic memory (not shown) in which preset characteristic data is stored for validating sensor information.

[0024] In this embodiment, the following characteristic data are stored in the electronic memory of the regulator:

[0025] 1. Time t tot ; After the heating element is switched on, at a defined time interval t tot -t 0 Finally, it must be possible to record temperature increments even when the kettle is filled with the maximum amount of water. If not, it could be for one of two reasons. Either the heating element is faulty, or the sen...

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Abstract

The invention relates to an electric kettle for heating water whereby the kettle has an electric heating element with an electronic regulator which detects the temperature and the duration of heating via sensors. The kettle comprises a non volatile electronic memory wherein predefined characteristic data is stored for verifying the sensor information. The invention also relates to a method for regulating a heating process for a kettle of said type, comprising the following steps: switching on a heating element; measuring the increase in temperature DELTA T at a predetermined time interval ttot-to; switching off the heating element if the measured temperature increase DELTA T is less than or equal to Tmin; measuring the temperature T at the time tmax; switching off the heating element if the measured temperature Ttmax is greater than the stored temperature Tmax; regular completion of the heating process. The invention enables a simple and secure detection of and response to an error function occurring in the heating element or the electronic regulator in the electric kettle.

Description

technical field [0001] The invention relates to an electric kettle for heating water according to the preamble of claim 1 . Furthermore, the invention relates to a method for regulating the heating process of a liquid in an electric kettle. Background technique [0002] Electric kettles used to heat water can be dangerous when the heating element overheats. In particular, such as in the case of a kettle boiling dry, the build-up of thermal energy may cause a fire or cause the user to suffer injuries such as burns. [0003] From prior art, known multiple electric kettles are arranged. Fusible fuses, bimetal sensors or other mechanical sensors have been known for a long time as overheating protection for these kettles. It is common for electric kettles to have boil-dry protection when overheating is reached. [0004] For example, EP 0 380 369 A1 discloses a protection method for an electric kettle according to the preamble of claim 1 . The methods described therein relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J27/21
CPCA47J27/21091
Inventor 弗兰克·克雷斯曼
Owner BRAUN GMBH
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