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Control method for anti-dryout of electric heating kettle

A technology of an electric kettle and a control method, which is applied in electrical program control, electric heating device, temperature control by electric means, etc., can solve problems such as damage to electrical components, untimely cutting off of heating power by control circuit, untimely cutting off power supply, etc. Avoid damaging effects

Inactive Publication Date: 2006-03-01
SHENZHEN CRASTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deficiency of this electric kettle anti-dry protection method is: the temperature rise is not judged accurately, which leads to the control circuit not cutting off the heating power in time, which is easy to cause damage to other electrical components; another traditional method uses a bimetal protection Dry-burning switch, when accidentally dry-burning occurs, the high temperature will make the dry-burning switch work and cut off the heating power supply. The disadvantage of this method is that it is not timely to cut off the power supply

Method used

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  • Control method for anti-dryout of electric heating kettle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, the volume is 1.75 liters, the heating power is 2000W, the calculation cycle is 6 seconds, the preset temperature change rate is 8 degrees per second, and the temperature acceleration change rate is 2 degrees per second.

Embodiment 2

[0022] Example 2, the volume is 1.75 liters, the heating power is 3000W, the calculation cycle is 2 seconds, the preset temperature change rate is 8, and the temperature acceleration change rate is 2.

Embodiment 3

[0023] Example 3, the volume is 1.75 liters, the heating power is 1000W, the calculation period is 10 seconds, the preset temperature change rate is 8, and the temperature acceleration change rate is 2.

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PUM

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Abstract

The present invention includes the following steps: 1. mounting sensor, microprocessor and control circuit in the electric kettle; 2. utilizing sensor to real-time detect temperature of electric kettle; 3. utilizing microprocessor to calculate temperature change rate according to detected temperature and making comparison of temperature change rate with preset value; and 4. When the temperature change rate is greater than preset value, giving out signal to control circuit to cut off power supply.

Description

technical field [0001] The invention relates to a control method for an electric kettle, in particular to a control method for preventing dry heating of the electric kettle. Background technique [0002] The electric kettle brings convenience to people's life and work. The electric kettle in the prior art generally adopts a fuse protection method to prevent dry heating. When the user accidentally does not add water in the electric kettle and turns on the heating power, the temperature of the heating body The rise of the fuse will blow the fuse wire, thereby cutting off the heating power supply and playing a protective role. The deficiency of this electric kettle anti-dry protection method is: the temperature rise is not judged accurately, which leads to the control circuit not cutting off the heating power in time, which is easy to cause damage to other electrical components; another traditional method uses a bimetal protection Dry heating switch, when accidental dry heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04G05B15/02G05D23/19H05B1/00A47J27/21
Inventor 张默晗王耀伦
Owner SHENZHEN CRASTAL TECH CO LTD