An Electric Water Heater Based on Accumulated Automatic Control of Liquid Level Difference

Abstract

The present invention provides an electric water heater based on the automatic control of liquid level difference. A liquid level sensing element is arranged inside the first pipe box to detect the liquid level of the fluid in the first pipe box. The liquid level sensing element communicates with the controller Data connection, the controller extracts the liquid level data according to the time sequence, and obtains the liquid level difference or the accumulation of the liquid level difference change through the comparison of the liquid level data in adjacent time periods. When it is lower than the threshold, the controller controls the electric heater Discontinue heating or continue heating. The electric heating device of the present invention can judge whether it has reached a stable state according to the internal liquid level difference or the accumulation of liquid level difference changes, and control the heating of the electric heater, so that the internal fluid can realize frequent vibrations, thereby achieving good descaling and heating effect.

Description

technical field [0001] The invention relates to a water heater, in particular to an electric water heater with automatic control based on liquid level difference. Background technique [0002] The water heater is an indispensable household appliance in current family life. And generally adopt electric water heater at present, utilize electric water heater to heat. In the applicant's previous application, a new type of coil-type electric heating coil was developed and researched, such as CN106123306A, so that the elastic tube bundle caused by the expansion of the fluid caused by heating caused heating and descaling Effect. [0003] However, in the application, it is found that the continuous heating of the electric heater will lead to the stability of the fluid in the internal electric heating device, that is, the fluid is not flowing or has little fluidity, or the flow rate is stable, resulting in a greatly weakened vibration performance of the coil, which affects The des...

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Problems solved by technology

[0003] However, in the application, it is found that the continuous heating of the electric heater will lead to the stability of the fluid in the internal electric heating device, that is, the fluid is not flowing or has little fluidity, or the flow rate is stable, resulting in a greatly weakened vibration performance of the coil, which affects The descaling of the coil and the heating efficiency, for this, the inventor conducted research and developed a new water heater capable of generating periodic vibrations, and has already applied for patents, the application numbers are 2019101874848, 2019101875431, 2019101866555, 2019101914489

[0004] However, in practice, it is found that if the vibration of the tube bundle is adjusted through fixed periodic changes, there will be hysteresis and the period will be too long or too short

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