JPS63119895A - Cleaning device for drinking water producing apparatus - Google Patents

Abstract

PURPOSE:To prevent a user from receiving the supply of water of undesirable nature by announcing the end of cleaning to the user upon lapse of the prescribed time after the energization to an electrode restores the original polarity. CONSTITUTION:A cathode chamber and anode chamber are formed in a water tank to which water is supplied from a faucet of a municipal water supply. A cathode is disposed in the cathode chamber and an anode in the anode chamber, respectively. The concn. of alkali ions in the water in the cathode chamber is increased by an electrolytic effect. Cleaning of the electrodes is executed by permitting the energization of the cathode and the anode in reverse directions. A polarity reversing means consisting of a selector switch 11, timers 16, 17 a transistor 18, and a coil 19 operates in response with a signal for requesting the cleaning to reverse the characteristic of the electricity to be supplied to the electrode 12 for the prescribed time. The announcing means consisting of the timer 17, a lamp 21 and a speaker 22 continues to announce that the apparatus is under cleaning for the prescribed timer after the polarity of the energization to the electrode restores the original polarity by the end of the cleaning of the electrode. As a result, the user is prevented from receiving the water of undesirable nature.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cleaning device for a drinking water production device, and particularly to an automatic cleaning device that automatically performs cleaning under normal usage conditions.

[Prior Art] As this type of automatic cleaning device, one shown in Utility Model Publication No. 14946/1983 is known. This device is configured to automatically operate a timer at the beginning of energization of the electrodes, and reverse the energization polarity for a predetermined period of time.

[Problem to be solved by the invention] In this conventional device, the properties of the water taken out from the electrolytic cell are reversed for 3 to 5 seconds after the cleaning is completed and the electrode returns to its normal energized state. As a result, this spring is supplied with water that has properties that are contrary to the user's wishes.

[Means for Solving the Problems] The present invention is provided with a polarity reversing means that operates in response to a cleaning request signal and reverses the polarity of the conduction to the electrode for a predetermined period of time. The cleaning device is constituted by a notification means that continues to notify that cleaning is in progress for a predetermined period of time after the current polarity returns to the original polarity.

[Operations] In the present invention, a notification that cleaning is still in progress is provided for a predetermined period of time after the electrode polarity returns to its original polarity upon completion of electrode cleaning.

[Example] The present invention will be explained in detail below based on an embodiment shown in the drawings.

When the main switch SW is turned on, a voltage of 100 volts AC is supplied to the transformer T from the outlet CN.

The transformer T steps down the 100 volt AC voltage from 48 volts to 12 volts.

There are four output terminals of the transformer T, tl to t4, which generate voltages of 48.36 and 24.12 volts, respectively.

The full-wave rectifier 1 performs full-wave rectification on the alternating current voltage supplied via the output selector switch 2 . The full-wave rectified voltage is smoothed by a capacitor 3 and a resistor 4 to become a DC voltage.

The following circuit is driven by this DC voltage.

The switch 5 is a pressure switch and is attached to a flow channel 33 that connects the water purifier 30 and the electrolytic cell 40, and its contacts close when the water faucet 20 is opened and water starts to be supplied into the electrolytic cell 4o.

When the pressure switch 5 is closed, current flows through the resistor 6, creating a voltage drop there.

This voltage drop increases the base potential of transistor 7, making transistor 7 conductive.

When transistor 7 becomes conductive, current flows through resistor 8, causing a voltage drop. This voltage drop is applied to the base of transistor 1o via resistor 9, causing transistor 10 to conduct.

When the transistor 10 becomes conductive, a positive voltage is applied to the electrodes 12a and 12c and a negative voltage is applied to the electrodes 12b and 12d via the contact 11a of the changeover switch 11.

Dirt, chlorine, or musty odor is removed from water supplied from a tap while it passes through strainers 31a and 31b in the water purifier 30 and activated carbon 32 disposed between them.

The water purified by the water purifier passes through the flow channel 33 to the electrolytic tank 40
supplied to i! ! The inside of the tank 40 is partitioned into anode chambers 40a, 40c and cathode chambers 40b, 40d by diaphragms 41a to 41c having minute holes, and anode electrodes 12a, 12c and cathode electrodes 12b, 12d are installed in each chamber. has been done.

The water flowing into the electrolytic cell 40 is evenly distributed into each chamber, where it is electrolyzed by electrolytic action.

Due to electrolysis, negatively charged chlorine (C1), sulfuric acid (SO, ), and phosphoric acid (PO4) are deposited in the anode chambers 40a and 40c.
, carbonic acid (CO3), and other ions gather, and the pH inside the anode chamber increases.
Filled with low acidic ionized water. On the other hand, the cathode chamber 40
b, 40d are positively charged calcium (Ca), sodium (Na), potassium (K), magnesium (M
Ions such as g) gather, and the cathode chamber is filled with alkaline ionized water with a high pH value.

The acidic ionized water and alkaline ionized water thus generated are separately and continuously taken out via the headers 42a and 42b, respectively.

Next, the cleaning function will be explained.

Since a voltage drop occurs across the resistor 8 while a voltage is applied to the electrode, a current flows through the resistor 13a to the energizing time measuring means 14.The energizing time measuring means 14 is provided with a capacitor 15. hand.

It is charged by this current. Since the charging circuit of the capacitor 15 is provided with a diode 13b for preventing backflow, the capacitor will not discharge even if the pressure switch 5 is opened and the current supply to the electrodes is stopped. Therefore, charges are accumulated in the capacitor 15 in accordance with the cumulative time of energization of the electrodes.

The energization time measuring means 14 is provided with a comparator that detects whether the charging voltage of the capacitor 15 has reached a predetermined voltage. The reference voltage of the comparator is set to a voltage at which the capacitor 15 is charged over 4 hours. When the electrodes are energized for a total of 4 hours, the comparator generates an output.

When the comparator generates an output, the first timer 16 and the second timer 17 start operating. When the timer is activated, the transistor 18 becomes conductive, current flows to the coil 19, the selector switch 11 is switched to the contact 11b side, and the polarity of the electrode is reversed.

This removes the inert layer formed on the surface of the electrode.

In this way, according to this embodiment, the number of times of cleaning can be minimized.

When the cathode is cleaned, its polarity is reversed and negatively charged ions are deposited on the surface, so if the cathode is made of iron-based material, there is a problem that the electrode will dissolve. This makes it possible to minimize electrode dissolution.

Additionally, hydrogen is generated when the anode is cleaned, so if the anode is made of powder metallurgy-based materials, there is a problem that the electrode becomes brittle. However, by reducing the number of times of cleaning, the brittleness of the electrode can be minimized. It can be kept to a minimum.

Furthermore, the problem of deterioration of the contacts due to excessive current flowing through the contacts of the changeover switch when changing the polarity can be solved by reducing the number of times of cleaning.

At the same time, the transmitter 2o is driven via the timer 17, and the lamp 21 and speaker 22 are activated to notify that automatic cleaning is in progress.

The timer 16 is set for 30 seconds to 1 minute, and when the set time elapses, the transistor 18 shuts off, cutting off the current to the coil 19 and closing the changeover switch 11 to the contact 11.
Switch to side A to return to normal energized state.

Timer 17 is set 3 to 5 seconds longer than timer 16. As a result, even after the cleaning is completed and the electrode returns to its normal energized state, the lamp 21 will continue to notify you that cleaning is in progress for 3 to 5 seconds. Speaker 22 is operating.

For 3 to 5 seconds after cleaning is completed and the electrode returns to its normal energized state, the properties of the water taken out from the header 423, 42b of the electrolytic cell 40 are reversed, so the user's intention is not affected during this time. This means that water will be supplied that is contrary to the requirements.

In this embodiment, during this time, a notification is given that the cleaning is still in progress, so that water will not be supplied against the user's wishes.

[Effects of the Invention] As explained above, according to the present invention, the end of cleaning is notified to the user after a predetermined period of time has passed after the electrical conductivity to the electrodes has returned to normal. There is no natural water supply.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a drawing showing an embodiment of a control circuit in a cleaning device of a drinking water manufacturing device according to the present invention, and FIG. 2 is a schematic diagram showing the structure of the drinking water manufacturing device. .

Claims (1)

[Claims] 1. A cathode chamber and an anode chamber are formed in a water tank that is supplied with water from a tap, and a cathode is placed in the cathode chamber and an anode is placed in the anode chamber.The alkali ion concentration of the water in the cathode chamber is reduced by electrolysis. In the device that cleans the electrode by increasing the current flow to the cathode and the anode in opposite directions, the polarity reversal is activated in response to a cleaning request signal and reverses the polarity of the conduction to the electrode for a predetermined period of time. Cleaning in a drinking water production device, characterized in that the cleaning means is provided with a notifying means for continuing to notify that cleaning is in progress for a predetermined period of time after the polarity of conduction to the electrode returns to its original polarity upon completion of cleaning of the electrode. Device.