JP3418449B2 - Ion water generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which normal water such as tap water is flowed into an electrolytic cell and electrolysis is performed by both positive and negative electrodes to which a DC voltage is applied. The present invention relates to an ion water generation device that increases (for example, used as drinking water) and generates acidic ionized water (for example, used as astringent water having a cosmetic effect) on the anode side.

[0002]

2. Description of the Related Art In this type of ionized water generator, if an unnecessarily large amount of current flows between both electrodes, an excessive load exceeding the design specifications is applied to the power transformer, causing not only a failure but also a user. For this reason, there is a danger that water with a PH value higher than necessary will be generated and adversely affect the human body.

Therefore, in order to prevent the occurrence of such an excessively large current, JP-A-5-329479 discloses a voltage applying means for applying a DC voltage to both the positive and negative electrodes, and a desired PH value. According to the voltage selection means for selecting an applied voltage from a plurality of preset voltage values, it is determined whether or not the current between the positive and negative electrodes is a predetermined value or more, and when the current of the predetermined value or more flows, Disclosed is an ionized water producing apparatus including current detection means for setting a DC voltage applied to both electrodes to a voltage value lower than the voltage value set by the voltage setting means.

[0004]

However, this is merely detecting the magnitude of the current value, and the detected current value is measured immediately after the application of the voltage or immediately after the polarity reversal, or the water flow rate. It cannot be said that the true current value is being detected because it changes greatly when there is a sudden change. Therefore, the applied voltage may be lowered more than necessary.

An object of the present invention is to solve such a drawback, that is, to monitor the voltage change by monitoring the temporal change of the current value without being affected by the transient change of the current between both electrodes. By controlling, the voltage value applied between both electrodes can be set appropriately.

[0006]

In the ion generator according to the present invention, in addition to the current detecting means 6 for judging whether or not the current between the positive electrode 2 and the negative electrode 3 is a predetermined value or more, it is possible to determine whether the current is a predetermined value or more. It is detected whether or not the detected current continues for a certain time or longer, and when the detected current continues for a certain time or longer, the DC voltage applied to both the positive and negative electrodes is set to a voltage value lower than the voltage value set by the voltage setting means 5. The present invention is provided with a current continuation time detecting means. This current duration detecting means can be configured by the microcomputer 7.

[0007]

According to this structure, when the current detection means detects that a current of a predetermined value or more has flowed between the positive and negative electrodes, the current continuation time detection means determines whether or not the detection has continued for a predetermined time or longer. When the current is detected and continued for a certain period of time or longer, the current duration detecting means automatically changes the DC voltage applied to both the positive and negative electrodes to a voltage value lower than the voltage value set by the voltage setting means.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1, the ionized water producing apparatus is roughly divided into an electrolytic cell 1 and a DC voltage generating circuit 4 which is a voltage applying means for applying a DC voltage to a positive electrode 2 and a negative electrode 3 in the electrolytic cell 1. A voltage selecting circuit 5 which is a voltage selecting means for selecting a voltage of several stages generated by the DC voltage generating circuit 4, and an output terminal when the current flowing between the positive electrode 2 and the negative electrode 3 exceeds a predetermined value. A current detection circuit 6 which is a current detection means for outputting a detection signal A from the microcomputer, and a microcomputer 7 which is a current continuation time detection means for inputting the detection signal A and detecting whether or not this has continued for a predetermined time or more. To be done.

The electrolytic cell 1 has a separator plate 8 for separating the electrodes 2 and 3 from each other, a water inlet 9, an alkaline water outlet 10 and an acidic water outlet 11, and tap water flowing from the water inlet 9 is supplied to both electrodes. Two
Separation into acidic ionized water and alkaline ionized water by the electrolysis of 3, and separate outflow from each outlet.

The DC voltage generating circuit 4 includes a power transformer 12
And a plurality of taps 14 on the secondary side 13 thereof, for example, relay switches 15a, 16a, 17a for switching and extracting four-stage AC voltage, and a diode bridge 1 for full-wave rectifying the extracted AC voltage.
8 and a rectifying circuit including a capacitor 19.

The voltage selection circuit 5 includes the relay switch 1 described above.
Relay 15 that switches 5a, 16a, and 17a, respectively
16 and 17 and transistors 20, 21 and 22 for turning these relays on and off, respectively.

The current detecting circuit 6 includes a current detecting resistor 23 connected between the output terminal of the rectifying circuit and the positive electrode 2,
It is composed of a comparator 24 having two input terminals connected to both ends of the resistor 23. A voltage corresponding to the current flowing between the positive electrode 2 and the negative electrode 3 is generated between both ends of the resistor 23, and when the voltage exceeds a predetermined value, the detection signal A is output from the comparator 24. That is, the output of the comparator 24 changes from LOW to HIGH.

The microcomputer 7 turns on / off the transistors 20, 21, 22 so that a voltage corresponding to the PH intensity set by the PH range setting switch 24 can be taken out from the secondary side 13 of the power transformer 12. To control. Further, the microcomputer 7 inputs the detection signal A and monitors whether or not it continues for a fixed time or longer, and when it continues for a fixed time or longer, the power transformer 12
The on / off relationship of the transistors 20, 21 and 22 is controlled so that the voltage extracted from the secondary side 13 of the transistor 20 is lowered by one step from the voltage corresponding to the desired PH value.

According to this structure, normally, a DC voltage preset according to the desired PH intensity is applied to the positive electrode 2 and the negative electrode 3, so that acidic ions corresponding to the desired PH are generated in the electrolytic cell 1. Although water and alkaline ionized water are generated, if the current flowing between the positive electrode 2 and the negative electrode 3 becomes a predetermined value or more and the state continues for a certain time or longer, the PH intensity is one range lower than the desired PH range. The voltage applied to the positive electrode 2 and the negative electrode 3 is automatically decreased by one step so that the voltage is forced to decrease.

[0015]

EFFECTS OF THE INVENTION According to the present invention, ordinary water such as tap water is flowed into the electrolytic cell, and electrolysis is performed by both the positive and negative electrodes to which a DC voltage is applied. When generating acidic ionized water, when an unnecessarily large current flows between both electrodes and the state continues for a certain period of time, the DC voltage applied to both electrodes is changed from the voltage value according to the target PH intensity. Since it automatically changes to a low voltage value, the power transformer may be overloaded exceeding the design specifications and cause a failure, or water with a PH value higher than necessary for the user may be generated, adversely affecting the human body. Problems such as the risk of exerting it can be easily solved. In addition, since the applied voltage value is not changed unless the excessive current state continues for a certain time or longer, it is possible to continuously and properly use the current value between both electrodes without reducing it more than necessary.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of an example of an ionized water generator according to the present invention.

[Explanation of symbols]

1 electrolysis tank 2 Positive electrode 3 negative electrode 4 DC voltage generation circuit (voltage application means) 5 Voltage selection circuit (voltage selection means) 6 Current detection circuit (current detection means) 7 Microcomputer (current duration detection means)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Nagaya 28-2, Izumi 2-chome, Higashi-ku, Nagoya, Aichi Prefecture, Ricoh Elemex Co., Ltd. (56) Reference JP-A-5-137858 (JP, A) JP JP-A-6-134462 (JP, A) JP-A-7-195075 (JP, A) JP-A-6-170370 (JP, A) JP-A-6-170368 (JP, A) JP-A-5-245474 (JP , A) Actual Kaihei 1-163494 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 1/46

Claims (2)

(57) [Claims] 1. An electrolytic cell into which normal water flows, and a negative electrode and a positive electrode which are provided in the electrolytic layer and which generate alkaline ionized water and acidic ionized water from ordinary water by applying a DC voltage. A voltage applying means for applying a DC voltage to both the positive and negative electrodes, a voltage selecting means for selecting the applied voltage from a plurality of voltage values preset according to the target PH value, and a current between the positive and negative electrodes In an ionized water production apparatus having a current detection means for determining whether or not it is a predetermined value or more, it is detected whether or not the current detected by the current detection means has continued for a certain time or more, and when the current has continued for a certain time or more, A direct current voltage applied to both the positive and negative electrodes is provided with a current duration detecting means for setting a voltage value lower than the voltage value set by the voltage setting means,
Ion water generator. 2. The ionized water generator according to claim 1, wherein the current duration detecting means is constituted by a microcomputer.