JPH02290288A - Water purifier - Google Patents

Abstract

PURPOSE:To make the replacement of a unit unnecessary for a long period of time by connecting the route from a water supply port to a valve and the route from an activated carbon unit to the valve by a bypass route through the valve. CONSTITUTION:Valves 7, 9 are opened to allow a water supply port 1 to communicate with a bypass route 8, an activated carbon unit 4, a filter 3 and a drain route 10 and the hot water stayed in the activated carbon unit 4 is drained. After the elapse of a definite time, the valves 7, 9 are closed while valves 2, 5 are opened to allow the water supply port 1, the filter 3, the activated carbon unit 4 and a cock 6 to communicate with each other to supply purified water from the cock 6. The activated carbon unit 4 is heated by a heating means 16 and rises in its temp. to return to an initial state. By this method, the clogging of the filter can be prevented and the replacement of the activated carbon unit becomes unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water purifier for filtering water, particularly a water purifier for domestic use.

[Conventional technology]

As shown in FIG. 2, a conventional water purifier has a structure in which a water inlet 12 for connection to a water faucet 11, a filter 13, an activated carbon unit 14, and a faucet 15 are connected in sequence.

[Problem to be solved by the invention]

The conventional water purifier using activated carbon has the following drawbacks.

■ Due to the limited ability to adsorb residual chlorine, odors, and organic matter, it is usually necessary to replace the activated carbon unit 14 every 3 to 6 months, which increases the effort and cost of obtaining and replacing the activated carbon unit 14. He was being harassed by someone.

■ Also, because the water supply flow rate decreases with usage time due to clogging of the filter 13 and activated carbon unit 14,
Similarly, it was necessary to replace the unit every 3 to 6 months.

■ Since the water stagnant in the activated carbon unit 14 has no residual chlorine, it is easy for bacteria to propagate, resulting in a sanitary problem.

The object of the present invention is to overcome the above-mentioned drawbacks and provide a sanitary water purifier that does not require replacement of the activated carbon unisoto for a long period of time and is free from the growth of germs.

[Means to solve the problem]

The first aspect of the present invention is a water purifier in which a water inlet 1, a valve 2, a filter 3, an activated carbon unit 4, a valve 5, and a faucet 6 are connected in sequence. The path between the valves 5 is communicated with a bypass path 8 via a valve 7, a drainage path 10 is connected from the path between the valve 2 and the filter 3 through a hull 9, and the activated carbon unit 4 is equipped with a heating means 16. The second feature is that the activated carbon unit 4 is constantly heated by the heating means, and when water is flowing, the valve 7 and the hull 9 are opened for a certain period of time, the filter 3 is backwashed, and the activated carbon unit 4 is heated. After cooling, the valve 2 and the valve 5 are opened, the valve 7 and the valve 9 are closed, and purified water is supplied from the faucet 6.

The activated carbon UNINOTO 4 has a casing filled with activated carbon and is designed to allow water to flow through it. This heating means 16 is not particularly limited, but may include heating the activated carbon unit 4 with an electric heater, incorporating an electric heater into the activated carbon unit 4, incorporating an electrode into the activated carbon unit 4 and directly energizing it, a gas spanner, A device that heats with a small combustor such as an alcohol burner is used. As the valves 2, 5, 7, and 9, manual valves, solenoid valves, electric valves, and other conventional valves are used.

[For production]

Hereinafter, one embodiment of the water purifier according to the present invention will be described based on the drawings.

Normally, each valve 2, 5, 7, and 9 is closed when water is not used. Further, the activated carbon unit 4 is constantly heated by a heating means and maintained at about 90°C. Therefore, bacteria will not spread inside the activated carbon, and bacteria that have entered from the water faucet 11 will be killed. moreover,
At a temperature of about 90° C., residual chlorine and the like adsorbed on the activated carbon are desorbed and dissolved into the hot water retained in the activated carbon unit 4. Hereinafter, this phenomenon will be referred to as regeneration.

Now, when trying to pass water from this state, first, Harub 7
Open the valve 9 and connect the water inlet 1 to the bypass route 8, activated carbon unit 4, filter 3, and drainage route 10, and remove the hot water (approximately 90°C) remaining in the activated carbon unit 4 to remove a large amount of residual chlorine, etc. (contains). At this time, filter 3.゛． 1. Since the filter 3 is backwashed with water, minute dust adhering to the filter 3 is also removed and drained.

Moreover, since completely new tap water is supplied to the activated carbon UniSoto 4, the activated carbon is cooled to the tap water temperature.

After a certain period of time has elapsed, valves 7 and 9 are closed, valves 2 and 5 are opened, and water inlet 1, filter 3, activated carbon unit 4, and faucet 6 are communicated with each other, and purified water is supplied from faucet 6. At this time, the temperature of activated carbon cools down to the temperature of tap water, so it has adsorption capacity and absorbs residual chlorine, odors, etc. When stopping the use of purified water, water flow is stopped by closing valves 2 and 5. Then, since the activated carbon unit 4 is heated by the heating means 16, the temperature rises and is maintained at about 90°C, returning to the initial state. The temperature control method of the heating means 16 is not particularly limited, but if the heating means 16 is an electric heater, on/off control using a thermostat or a PTC heater that keeps the temperature constant at 90"C may be used. .

When regenerating the activated carbon used in the activated carbon unit 4, it is preferable to use fibrous activated carbon because fibrous activated carbon is more efficient than granular activated carbon at a low temperature of about 90°C.

In addition, the opening and closing of each valve 2, 5, 7, and 9 can be performed automatically using a solenoid valve and a timer, and the drainage time can be adjusted by setting the timer. Further, the heating of the activated carbon unit 4 by the heating means 16 may be stopped as appropriate, such as during water flow.

Furthermore, the electromechanical automatic control 11I may be used to control the opening and closing of the valves 2, 5, 7, and 9 during water flow.

〔Effect of the invention〕

In the water purifier of this invention, the activated carbon is regenerated and the filter is backwashed each time it is used, so there is no decrease in adsorption capacity even with a small amount of activated carbon, and the filter does not become clogged, so it can be used for a long time. There is no need to replace the activated carbon unit, so it is easy to use and can be used at low cost.

In addition, since the activated carbon is constantly heated, it is hygienic as there is no breeding of bacteria.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing one embodiment of the water purifier of the present invention, Fig. 2 is a schematic diagram showing an embodiment of the water purifier of the present invention;
The figure is a schematic diagram showing a conventional water purifier. 1: Water inlet, 9: Valve, 2: Valve,
10: Drainage route, 3; Filter
11: Water faucet, 4: Activated carbon unit, 12: Water supply port, 5: Valve, 13: Filter 6: Faucet, 7: Valve, 8: Bypass path, 14: Activated carbon, 15: Faucet, 16: Heater

Claims (2)

[Claims] (1) In a water purifier in which water inlet 1, valve 2, filter 3, activated carbon unit 4, valve 5, and faucet 6 are connected in sequence, the path between water inlet 1 and valve 2 and the path between activated carbon unit 4 and valve 5 are connected via a bypass route 8 via a valve 7, a drainage route 10 is connected to a route between the valve 2 and the filter 3 via a valve 9, and the activated carbon unit 4 is equipped with a heating means 16. A water purifier characterized by: (2) After the activated carbon unit 4 is constantly heated by the heating means, the valves 7 and 9 are opened for a certain period of time during water flow, the filter 3 is backwashed, and the activated carbon unit 4 is cooled.
2. The water purifier according to claim 1, wherein purified water is supplied from a faucet 6 by opening valves 2 and 5 and closing valves 7 and 9.