An electrolyzed water generating device and a method for controlling the ratio of alkaline water and acidic water generated thereby

Abstract

The present invention relates to an electrolyzed water generating device and a method for controlling the ratio of alkaline water and acidic water generated thereby. The device comprises a plurality of electrolysis units, each electrolysis unit including a unit cell. The unit cell is divided by a diaphragm into an A chamber and a B chamber with equal volumes. An A electrode plate is disposed on the far side of the diaphragm in the A chamber, and a B electrode plate is disposed on the far side of the diaphragm in the B chamber. An A chamber water inlet is provided at the bottom of the A chamber, and an A chamber water outlet is provided at the top of the A chamber. A B chamber water inlet is provided at the bottom of the B chamber, and a B chamber water outlet is provided at the top of the B chamber. The A chamber water inlet and the B chamber water inlet are respectively connected to raw water but do not intake water simultaneously. When the A electrode plate is connected to the positive pole of a DC power supply, the B electrode plate is connected to the negative pole of the DC power supply; when the A electrode plate is connected to the negative pole of the DC power supply, the B electrode plate is connected to the positive pole of the DC power supply. Compared with the prior art, the present invention can conveniently adjust the ratio of the two kinds of effluents at any time according to user needs, and ensure the water quality safety of the required effluents. No matter how the positive and negative poles of the electrode plates are reversed with respect to the power supply, the effluent ratio can remain unchanged.

Description

Technical Field

[0001] The present invention relates to a method for generating weak alkaline or weak acidic electrolyzed water by electrolyzing water, and specifically to an electrolyzed water generating device and a method for controlling the ratio of the generated alkaline water and acidic water. Background Art

[0002] Matsushita Electric Industrial Co., Ltd. has disclosed an electrolyzed water generating device as shown in the attached Figure 1 The electrolyzed water generating device 1 introduces raw water such as tap water into the electrolytic cell 2 for electrolytic decomposition, and produces alkaline ion water suitable for drinking in the electrolytic cell 2.

[0003] The electrolytic cell 2 has a cathode chamber 22 and an anode chamber 23 separated by a diaphragm 21. A cathode plate 24 is provided in the cathode chamber 22, and an anode plate 25 is provided in the anode chamber 23. The cathode plate 24 and the anode plate 25 are disposed opposite to each other with the diaphragm 21 therebetween. And, by applying a DC voltage to the cathode plate 24 and the anode plate 25, the water introduced into the electrolytic cell 2 is electrolytically decomposed, alkaline ion water is generated in the cathode chamber 22 and acidic water is generated in the anode chamber 23. After the alkaline ion water is ejected from the water outlet pipe 26 communicating with the cathode chamber 22, it is mainly used for drinking. After the acidic water is discharged from the drain pipe 27 communicating with the anode chamber 23, it is discarded except in cases where it is used for specific purposes.

[0004] The raw water is introduced into the electrolytic cell 2 via the raw water supply pipe 3. The raw water supply pipe 3 branches into a cathode side water supply pipe 31 and an anode side water supply pipe 32. The cathode side water supply pipe 31, as a cathode side path, specifically supplies raw water to the cathode chamber 22, and the anode side water supply pipe 32, as an anode side path, specifically supplies raw water to the anode chamber 23.

[0005] ... A proportional solenoid valve 6 serving as a flow rate adjusting unit is provided in the anode side water supply pipe 32 (alternatively, a variable valve or the like can be used instead of the solenoid valve, as long as it is a component capable of controlling the flow rate), and in the anode side water supply pipe 32, a Ca addition cylinder 7 for adding calcium as an electrolysis promoter is provided on the downstream side of the proportional solenoid valve 6.

[0006] Generally, the volumes of the cathode chamber 22 and the anode chamber 23 are equal, and the amount of alkaline ion water flowing out of the cathode chamber and the amount of acidic water flowing out of the anode chamber are equal, both being half of the water inflow amount, that is, the water outlet ratio is 1:1.

[0007] And the existing electrolyzed water generating devices usually reverse the polarity to remove the scale in the electrolytic cell to extend the service life of the electrolytic cell.

[0008] In practice, customers usually hope that one kind of water produced by the electrolytic cell has a large amount, while the other has a small amount, that is, the water output ratio is not 1:1. To change the water output ratio from 1:1 to a non-1:1 ratio, there are usually two methods:

[0009] One method is to make the distances between the cathode and anode in the electrolytic cell and the diaphragm unequal. For example, if the distance between the cathode and the diaphragm is greater than the distance between the anode and the diaphragm, the volume of the cathode chamber will be larger than that of the anode chamber, so that the amount of water in the cathode can be greater than that in the anode. However, if this method is adopted and the user reverses the current directions of the anode and cathode, the original cathode chamber becomes the anode chamber and the anode water flows out, and the original anode chamber becomes the cathode chamber and the cathode water flows out. Since the distance between the electrode plate and the membrane is a fixed distance after the cell is made and cannot be changed together, the water output ratio of the cathode water and the anode water will also be reversed, and the one that originally had more water output now has less water output, which is contrary to the requirement.

[0010] Another method is to change the water output of the water outlet in the cathode chamber or the anode chamber. For example, if the user needs the cathode water flow rate to be greater than the anode water flow rate, the flow channel or water outlet of the anode chamber water can be made smaller, resulting in a decrease in the anode water flow rate. When the water inlet volume remains unchanged, the cathode water flow rate will increase. However, using this method will cause water mixing. The reason is that when the volumes of the cathode chamber and the anode chamber are the same, forcibly reducing the water output on one side will result in a large amount on one side and a small amount on the other side. Part of the water with a small water output will mix into the water with a large water output, which will affect the change of the water quality index or the change of the composition of the water with a large water output, and will cause food and drug safety problems in industries such as food, beverage, and pharmaceutical. Summary of the Invention

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art and disclose a method for controlling the water output ratio of alkaline water and acidic water generated after electrolysis of water. The technical solution adopted is:

[0012] An electrolyzed water generating device includes a plurality of electrolysis units. Each electrolysis unit includes a unit cell, and the unit cell is divided by a diaphragm into an A chamber and a B chamber with equal volumes. An A electrode plate is arranged on the far side of the diaphragm in the A chamber, and a B electrode plate is arranged on the far side of the diaphragm in the B chamber. An A chamber water inlet is arranged at the bottom of the A chamber, and an A chamber water outlet is arranged at the top. A B chamber water inlet is arranged at the bottom of the B chamber, and a B chamber water outlet is arranged at the top. The A chamber water inlet and the B chamber water inlet are respectively connected to raw water but do not supply water simultaneously; when the A electrode plate is connected to the positive pole of the DC power supply, the B electrode plate is connected to the negative pole of the DC power supply, and when the A electrode plate is connected to the negative pole of the DC power supply, the B electrode plate is connected to the positive pole of the DC power supply.

[0013] A method for controlling the ratio of alkaline water and acidic water generated by this electrolyzed water generating device is characterized in that:

[0014] If more cathode water than anode water is needed:

[0015] 1. When the A electrode plate is connected to the positive electrode and the B electrode plate is connected to the negative electrode, open the water inlet of chamber B, close the water inlet of chamber A, reduce the water output of the water outlet of chamber B, and let this reduced amount of water enter chamber A through the diaphragm from chamber B, and then flow out from the water outlet of chamber A, and make the flow rate of the water outlet of chamber B greater than that of the water outlet of chamber A;

[0016] 2. When the A electrode plate is connected to the negative electrode and the B electrode plate is connected to the positive electrode, close the water inlet of chamber B, open the water inlet of chamber A, reduce the water output of the water outlet of chamber A, and let this reduced amount of water enter chamber B through the diaphragm from chamber A, and then flow out from the water outlet of chamber B, and make the flow rate of the water outlet of chamber B less than that of the water outlet of chamber A;

[0017] If more anode water than cathode water is needed:

[0018] 3. When the A electrode plate is connected to the positive electrode and the B electrode plate is connected to the negative electrode, close the water inlet of chamber B, open the water inlet of chamber A, reduce the water output of the water outlet of chamber A, and let this reduced amount of water enter chamber B through the diaphragm from chamber A, and then flow out from the water outlet of chamber B, and make the flow rate of the water outlet of chamber B less than that of the water outlet of chamber A;

[0019] 4. When the A electrode plate is connected to the negative electrode and the B electrode plate is connected to the positive electrode, open the water inlet of chamber B, close the water inlet of chamber A, reduce the water output of the water outlet of chamber B, and let this reduced amount of water enter chamber A through the diaphragm from chamber B, and then flow out from the water outlet of chamber A, and make the flow rate of the water outlet of chamber B greater than that of the water outlet of chamber A.

[0020] As another alternative, when the water inlet 302 of chamber B is open, the water inlet 301 of chamber A is nearly closed but not completely closed; when the water inlet 301 of chamber A is open, the water inlet 302 of chamber B is nearly closed but not completely closed.

[0021] Compared with the prior art, the present invention can conveniently adjust the ratio of the two kinds of water output according to the user's needs at any time, and ensure the water quality safety of the required water output. No matter how the positive and negative poles of the electrode plate are reversed when connected to the power supply, the water output ratio can remain unchanged. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of an existing electrolyzed water generating device.

[0023] Figure 2 is a schematic structural diagram of the present invention. Detailed Embodiments

[0024] Example 1, as shown in the appendix Figure 2An electrolyzed water generating device shown in the figure includes a plurality of electrolysis units. Each electrolysis unit includes a unit cell 200, and the unit cell is divided by a diaphragm 201 into an A chamber 202 and a B chamber 203 with equal volumes. An A electrode plate 204 is arranged inside the A chamber and on the far side of the diaphragm, and a B electrode plate 205 is arranged inside the B chamber and on the far side of the diaphragm. An A chamber water inlet 301 is arranged at the bottom of the A chamber, and an A chamber water outlet 206 is arranged at the top. A B chamber water inlet 302 is arranged at the bottom of the B chamber, and a B chamber water outlet 207 is arranged at the top. The A chamber water inlet 301 and the B chamber water inlet 302 are respectively connected to raw water but do not intake water simultaneously. When the A electrode plate 204 is connected to the positive pole of a DC power supply, the B electrode plate is connected to the negative pole of the DC power supply. When the A electrode plate 204 is connected to the negative pole of the DC power supply, the B electrode plate is connected to the positive pole of the DC power supply.

[0025] Example 2, a method for controlling the ratio of alkaline water and acidic water generated by the electrolyzed water generating device of Example 1. If more cathode water than anode water is needed:

[0026] When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, the B chamber water inlet 302 is opened, the A chamber water inlet 301 is closed, the water output of the B chamber water outlet 207 is reduced, and the reduced amount of water passes through the diaphragm 201 from the B chamber 203 into the A chamber 202 and then flows out from the A chamber water outlet 206, and the flow rate of the B chamber water outlet 207 is made greater than the flow rate of the A chamber water outlet 206.

[0027] When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, the B chamber water inlet 302 is closed, the A chamber water inlet 301 is opened, the water output of the A chamber water outlet 206 is reduced, and the reduced amount of water passes through the diaphragm from the A chamber 202 into the B chamber 203 and then flows out from the B chamber water outlet 207, and the flow rate of the B chamber water outlet 207 is made less than the flow rate of the A chamber water outlet 206.

[0028] If more anode water than cathode water is needed:

[0029] When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, the B chamber water inlet 302 is closed, the A chamber water inlet 301 is opened, the water output of the A chamber water outlet 206 is reduced, and the reduced amount of water passes through the diaphragm 201 from the A chamber 202 into the B chamber 203 and then flows out from the B chamber water outlet 207, and the flow rate of the B chamber water outlet 207 is made less than the flow rate of the A chamber water outlet 206.

[0030] When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, the B chamber water inlet 302 is opened, the A chamber water inlet 301 is closed, the water output of the B chamber water outlet 207 is reduced, and the reduced amount of water passes through the diaphragm from the B chamber 203 into the A chamber 202 and then flows out from the A chamber water outlet 206, and the flow rate of the B chamber water outlet 207 is made greater than the flow rate of the A chamber water outlet 206.

[0031] Example 3, the other conditions are the same as those in Example 2, except that when the water inlet 302 of Chamber B is opened, the water inlet 301 of Chamber A is nearly closed but not completely closed; when the water inlet 301 of Chamber A is opened, the water inlet 302 of Chamber B is nearly closed but not completely closed.

Claims

1. A method for controlling the ratio of alkaline water and acidic water generated by an electrolytic water generation device, characterized in that: The electrolytic water generating device includes a number of electrolysis units. Each electrolysis unit includes a unit cell (200). The unit cell is divided by a diaphragm (201) into an A chamber (202) and a B chamber (203) with equal volumes. An A electrode plate (204) is arranged on the far side of the diaphragm in the A chamber, and a B electrode plate (205) is arranged on the far side of the diaphragm in the B chamber. An A chamber water inlet (301) is arranged at the bottom of the A chamber, and an A chamber water outlet (206) is arranged at the top of the A chamber. A B chamber water inlet (302) is arranged at the bottom of the B chamber, and a B chamber water outlet (207) is arranged at the top of the B chamber. The A chamber water inlet (301) and the B chamber water inlet (302) are respectively connected to the raw water but do not intake water simultaneously; when the A electrode plate (204) is connected to the positive pole of the DC power supply, the B electrode plate is connected to the negative pole of the DC power supply, and when the A electrode plate (204) is connected to the negative pole of the DC power supply, the B electrode plate is connected to the positive pole of the DC power supply; If more cathode water than anode water is needed: (1) When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, open the B chamber water inlet (302), close the A chamber water inlet (301), reduce the water output of the B chamber water outlet (207), and let this reduced part of the water volume enter the A chamber (202) from the B chamber (203) through the diaphragm (201), and then flow out from the A chamber water outlet (206), and make the flow rate of the B chamber water outlet (207) greater than the flow rate of the A chamber water outlet (206); (2) When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, close the B chamber water inlet (302), open the A chamber water inlet (301), reduce the water output of the A chamber water outlet (206), and let this reduced part of the water volume enter the B chamber (203) from the A chamber (202) through the diaphragm and then flow out from the B chamber water outlet (207), and make the flow rate of the B chamber water outlet (207) less than the flow rate of the A chamber water outlet (206); If more anode water than cathode water is needed: (3) When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, close the B chamber water inlet (302), open the A chamber water inlet (301), reduce the water output of the A chamber water outlet (206), and let this reduced part of the water volume enter the B chamber (203) from the A chamber (202) through the diaphragm (201), and then flow out from the B chamber water outlet (207), and make the flow rate of the B chamber water outlet (207) less than the flow rate of the A chamber water outlet (206); (4) When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, open the B chamber water inlet (302), close the A chamber water inlet (301), reduce the water output of the B chamber water outlet (207), and let this reduced part of the water volume enter the A chamber (202) from the B chamber (203) through the diaphragm and then flow out from the A chamber water outlet (206), and make the flow rate of the B chamber water outlet (207) greater than the flow rate of the A chamber water outlet (206).

2. A method for controlling the ratio of alkaline water and acidic water generated by an electrolytic water generation device, characterized in that: Electrolyzed water generating device, comprising a plurality of electrolysis units, each of the electrolysis units including a unit cell (200), the unit cell being divided by a diaphragm (201) into an A chamber (202) and a B chamber (203) with equal volumes. An A electrode plate (204) is arranged in the A chamber and on the far side of the diaphragm, and a B electrode plate (205) is arranged in the B chamber and on the far side of the diaphragm. An A chamber water inlet (301) is arranged at the bottom of the A chamber, and an A chamber water outlet (206) is arranged at the top of the A chamber. A B chamber water inlet (302) is arranged at the bottom of the B chamber, and a B chamber water outlet (207) is arranged at the top of the B chamber. The A chamber water inlet (301) and the B chamber water inlet (302) are respectively connected to raw water but do not intake water simultaneously. When the A electrode plate (204) is connected to the positive pole of a DC power supply, the B electrode plate is connected to the negative pole of the DC power supply. When the A electrode plate (204) is connected to the negative pole of the DC power supply, the B electrode plate is connected to the positive pole of the DC power supply. If more cathode water than anode water is required: (1) When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, the B chamber water inlet (302) is opened, the A chamber water inlet (301) is nearly closed but not completely closed, the water output of the B chamber water outlet (207) is reduced, and the reduced amount of water passes through the diaphragm (201) from the B chamber (203) into the A chamber (202) and then flows out from the A chamber water outlet (206), and the flow rate of the B chamber water outlet (207) is made greater than the flow rate of the A chamber water outlet (206); (2) When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, the B chamber water inlet (302) is nearly closed but not completely closed, the A chamber water inlet (301) is opened, the water output of the A chamber water outlet (206) is reduced, and the reduced amount of water passes through the diaphragm from the A chamber (202) into the B chamber (203) and then flows out from the B chamber water outlet (207), and the flow rate of the B chamber water outlet (207) is made less than the flow rate of the A chamber water outlet (206); If more anode water than cathode water is required: (3) When the A electrode plate is connected to the positive pole and the B electrode plate is connected to the negative pole, the B chamber water inlet (302) is nearly closed but not completely closed, the A chamber water inlet (301) is opened, the water output of the A chamber water outlet (206) is reduced, and the reduced amount of water passes through the diaphragm (201) from the A chamber (202) into the B chamber (203) and then flows out from the B chamber water outlet (207), and the flow rate of the B chamber water outlet (207) is made less than the flow rate of the A chamber water outlet (206); (4) When the A electrode plate is connected to the negative pole and the B electrode plate is connected to the positive pole, the B chamber water inlet (302) is opened, the A chamber water inlet (301) is nearly closed but not completely closed, the water output of the B chamber water outlet (207) is reduced, and the reduced amount of water passes through the diaphragm from the B chamber (203) into the A chamber (202) and then flows out from the A chamber water outlet (206), and the flow rate of the B chamber water outlet (207) is made greater than the flow rate of the A chamber water outlet (206).

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