Electrodialysis control method and device and water purifier

Abstract

The embodiment of the invention provides an electrodialysis control method which is applied to water purification equipment. The water purification equipment comprises a frequent electrodialysis reversal membrane stack. The control method comprises the following steps: determining that the frequent electrodialysis reversal membrane stack is in a stop running state, wherein in an operation stopping state, water is forbidden to flow into the frequent electrodialysis reversal membrane stack, and no working voltage is applied to the frequent electrodialysis reversal membrane stack; and applying bias voltage to the frequent electrodialysis reversal membrane stack during the period that the frequent electrodialysis reversal membrane stack is recovered from the operation stopping state to an operation state. The bias voltage is applied to the frequent electrodialysis reversal membrane stack when the frequent electrodialysis reversal membrane stack is recovered from the operation stopping state to the operation state, so that residual water under the action of permeation is ionized before being discharged, the problem of first cup of water in the industry is solved, the drinking water health requirement of a user is met, and in addition, the problem of deposition and scaling can be solved by adopting frequent electrodialysis reversal.

Description

technical field [0001] The invention relates to the technical field of water purifying appliances, in particular to an electrodialysis control method, device and water purifier. Background technique [0002] In the existing water purifiers, the temperature of the first cup of water usually does not meet the taste expected by the user, especially the longer the use time, the worse the experience of the first cup of water actually comes out. In the static state of water, due to the osmosis caused by the concentration difference in the concentrated and fresh water chamber of the membrane stack, ions move from the concentrated water side to the fresh water side, which in turn leads to an increase in the concentration of ions in the fresh water side. When working with water and electricity at the same time, the total dissolved solids value of the first 250ml of water is much higher than that of normal water production, which leads to health problems for users in the first glass o...

AI Technical Summary

Problems solved by technology

[0002] In the existing water purifiers, the temperature of the first cup of water usually does not meet the user's expected taste, especially the longer the use time, the worse the experience of the first cup of water actually comes out. In the static state of water, due to the osmosis caused by the concentration difference in the concentrated and fresh water chamber of the membrane stack, the ions move from the concentrated water side to the fresh water side, which in turn leads to an increase in the concentration of ions in the fresh water side

When working with water and electricity at the same time, the total dissolved solids value of the first 250ml of water is much higher than the normal water production state, which leads to health problems for users in the first glass of water

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