JPH08224581A - Water purifying apparatus - Google Patents

Abstract

PURPOSE: To previously prevent hot water from flowing in a water purifying apparatus by shutting hot water by driving a solenoid valve even if hot water is supplied to the water purifying apparatus due to erroneous operation of a switching valve. CONSTITUTION: This water purifying apparatus is provided with a solenoid valve 14 installed in an inlet pipe 7 of a water purifier 8, a temperature sensor 12 to detect the temperature of raw water, a temperature detector 13 to detect that the temperature of raw water exceeds a prescribed value by the temperature sensor 12, and a means which drives the solenoid valve 14 when the temperature detector 13 starts operation and informs of when raw water is shut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a water purification device using a hollow fiber membrane.

[0002]

2. Description of the Related Art Recently, a mixer provided with a water purifier in a mixing tap for mixing hot water and cold water has become popular in the home.

By the way, a hollow fiber membrane filter is used in a water purifier, but this hollow fiber membrane is weak against heat and has a water temperature of 3
When the temperature is 5 ° C. or higher, the life of the hollow fiber membrane is significantly shortened.

Therefore, according to Japanese Utility Model Laid-Open No. 3-38195, a shape memory alloy and a spring are combined, and a water purifier is connected to a heat-responsive switching valve that is selective to temperature. A device has been proposed that sends water, but automatically switches to the raw water channel when hot water is used and does not send hot water to the water purifier.

[0005]

SUMMARY OF THE INVENTION The above-mentioned conventional apparatus applies the thermal transformation / action of shape memory alloy to switch valves,
Although the passage to the water purifier is blocked, there is a problem that this shape memory alloy has a large variation with respect to temperature, hot water flows into the water purifier, and the life of the hollow fiber membrane is shortened.

In view of the above-mentioned drawbacks, the present invention is to provide a water purifying apparatus which extends the life of the water purifier by preventing the raw water from being fed to the water purifier when the raw water exceeds a predetermined temperature.

[0007]

This object is to purify, through a water purifier, a mixing stopper for mixing hot water and cold water, and the raw water mixed by the mixing stopper into a faucet of the mixing stopper. In a water purification device having a switching valve for switching between the raw water, an electromagnetic valve provided in the inlet pipe of the water purifier, a temperature sensor for detecting the temperature of the raw water, and the temperature sensor detects that the raw water exceeds a predetermined temperature. It is achieved by providing a temperature detector for detecting the fact, and a means for operating the electromagnetic valve when the temperature detector operates to interrupt the raw water and notify the same.

[0008]

According to the present invention, when the user mistakenly flows hot water into the water purifier side, the temperature sensor detects the hot water,
Immediately shuts off the solenoid valve, so hot water does not flow into the water purifier. Therefore, the life of the water purifier will not be shortened,
Even unfamiliar children and the elderly can use the water purification system with peace of mind.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 designates a mixing stopper, which is provided with a cock 2 for discharging hot water and a cock 3 for discharging cold water. Reference numeral 4 is a switching valve attached to the tap of the mixing stopper 1. When the switching lever 5 provided on the switching valve 4 is tilted upward, the raw water that has passed through the mixing stopper 1 is directly discharged from the outlet pipe 6 of the raw water. . Further, when the switching lever 5 is tilted downward, the raw water flows into the water purifier 8 through the inlet pipe 7 and the hollow fiber membrane 9 provided in the water purifier 8.
The raw water is filtered by the action of the activated carbon 10 and the purified water is discharged from the purified water outlet pipe 11.

Reference numeral 12 is a temperature sensor provided in the inlet pipe 7 for detecting the temperature of the raw water. Reference numeral 13 is a temperature for detecting the temperature of the temperature sensor 12 and the temperature at which the hollow fiber membrane 9 deteriorates in function, that is, 35 ° C.
A temperature detector which operates when the temperature exceeds 14 is a solenoid valve which shuts off the raw water flowing in the inlet pipe 7.

FIG. 2 is an electrical connection diagram for controlling the solenoid valve 14. In the figure, P and N are DC power supply terminals,
Is an input terminal of the temperature sensor 12, and 16 is a relay that is energized when the temperature detector 12 operates. When the relay 16 is energized, the contact 16a is closed and the electromagnetic coil 17 of the electromagnetic valve 14 is energized. , The bell 18 rings.

Next, the operation of this embodiment will be described.

It is now assumed that the lever 5 of the switching valve 4 is tilted upward. At this time, the hot water cock 2 and the cold water cock 3
Is adjusted, an appropriate raw water is discharged from the raw water outlet pipe 6.

Next, the lever 5 of the switching valve 4 is tilted downward.
Then, when the cold water cock 3 is opened, this cold water (raw water) flows into the inlet pipe 7 through the switching valve 4 and enters the water purifier 8,
Raw water is purified by the action of the hollow fiber membrane 9 and the activated carbon 10,
This purified water is discharged from the purified water outlet pipe 11.

Next, it is assumed that the user accidentally opens the hot water cock 2. At this time, the temperature of hot water is 35 ° C or higher. The temperature of the hot water is detected by the temperature sensor 12, the relay 16 of the temperature detector 13 is energized, the electromagnetic coil 17 is energized, and the electromagnetic valve 14 operates to shut off the inflowing hot water. 18 sounds, and the functional deterioration of the hollow fiber membrane 9 due to hot water can be prevented in advance. Then, when the temperature of the hot water decreases, the electromagnetic coil 17 is deenergized and the raw water again flows into the water purifier 8.

In this way, even if the user, especially an old person or a child who is unfamiliar to the user mistakenly operates the switching valve 4 and switches the hot water to the water purifier 8 side, the inlet pipe 7 is shut off and the hot water is purified. Therefore, the life of the hollow fiber membrane 9 is not shortened.

In this embodiment, the water purifier 8 has been described by using the hollow fiber membrane 9 and the activated carbon 10 in combination. However, the water purifier 8 is constituted only by the hollow fiber membrane 9 or an electrolytic cell is added to the water purifier 8. Of course, it can also be applied to the alkaline ionized water conditioner.

[0019]

As described above, according to the present invention, the inlet pipe of the water purifier is provided with the electromagnetic valve and the temperature sensor, and even if hot water is mistakenly introduced, the hot water is detected by the temperature sensor and immediately. Since the solenoid valve operates to block the inlet pipe and prevent hot water from entering the water purifier, it is possible to prevent the hollow fiber membrane inside the water purifier from deteriorating due to hot water. can do.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a water purification device of the present invention.

FIG. 2 is an electrical connection diagram showing an electromagnetic valve of the water purifying apparatus of FIG.

[Explanation of symbols]

 1 Mixing Plug 2 Hot Water Cock 3 Cold Water Cock 4 Switching Valve 8 Water Purifier 9 Hollow Fiber Membrane 12 Temperature Sensor 13 Temperature Detector 14 Solenoid Valve 17 Electromagnetic Coil 18 Bell

Claims (1)

[Claims] 1. A mixing stopper for mixing hot water and cold water, and a faucet of the mixing stopper for purifying the raw water mixed by the mixing stopper through a water purifier, and a switching valve for switching between the purified water and the raw water. In a water purifier provided, an electromagnetic valve provided in the inlet pipe of the water purifier, a temperature sensor for detecting the temperature of the raw water, and a temperature detector for detecting that the raw water exceeds a predetermined temperature by the temperature sensor. , A means for operating the electromagnetic valve when the temperature detector operates to shut off the raw water and to notify the same.