Electric kettle

A technology of electric kettle and water volume, applied in the direction of non-electric variable control, instrument, temperature control, etc., can solve the problem of low detection accuracy, achieve the effect of improving accuracy, high reliability, and avoiding lag problems

Active Publication Date: 2017-12-08
ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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Problems solved by technology

[0004] However, the detection accuracy of the method for detecting the amount of water by the gravity detector is low

Method used

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Embodiment Construction

[0038] Considering that heating water to the target temperature is related to the initial temperature, water volume, heating power and heating time of the water, when the initial temperature, water volume and heating power of the water are determined, only the heating time needs to be controlled to ensure that the water temperature reaches target temperature. Compared with the existing temperature control method in which the heating circuit is controlled to stop heating after the temperature sensor determines that the water temperature reaches the target temperature, there is no hysteresis problem, and the temperature control method is more accurate. Aiming at the problem of low accuracy of existing water volume measurement methods, the present invention provides an electric kettle, which first heats the water for a period of time, and calculates the water volume according to the relationship between the above-mentioned water volume, water temperature, time and power, and then ...

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Abstract

The present invention provides an electric kettle. A detection circuit in the electric kettle is used to detect at least one of the following items: the voltage of a first end of a heating circuit, a current flowing through the heating circuit and the power of the heating circuit, and a control circuit is used to adjust a control signal sent to a switching circuit when the deviation of at least one detection result of the detection circuit and a preset numerical value corresponding to the detection result is not within a preset range, and determine the water yield in the electric kettle after the situation that the deviation of the detection result and the corresponding preset numerical value is within the preset range is detected for the first time, and according to the detection temperatures detected by a temperature sensor at at least two moments. By adding the detection circuit in the electric kettle, detecting and controlling the voltage, current or power of the heating circuit, the electric kettle works under a stable power, and further the water yield in the electric kettle is determined according to the temperature change within the fixed time period, thereby improving the water yield detection accuracy.

Description

technical field [0001] The invention relates to the technical field of circuit structures, in particular to an electric kettle. Background technique [0002] The electric kettle has the advantages of small size, safety, no open flame, fast heating, etc. It is a common household electrical equipment. Existing electric kettle can also be used for boiling tea, boiling soup, stewing medicinal food etc. except being used for boiling water. [0003] In order to realize the above-mentioned functions of the electric kettle, it is necessary to strictly control the temperature of the water in the electric kettle. However, there is hysteresis in the method of controlling the water temperature using a temperature sensor, and the water temperature control effect is poor. Therefore, the existing water temperature control method often adopts: obtain the water quantity in the electric kettle according to the detection result of the gravity detector arranged at the bottom of the kettle bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 杜露男黄清仕
Owner ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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