KR100858971B1 - A central purification system equipped with sterilization device, method for sterilizing the system and method for cleaning the system - Google Patents

Abstract

A central water purification system equipped with a sterilization unit for producing sterilizing water containing silver ions using electrolysis is provided to simplify structure of the system, reduce manufacturing costs of the system, and improve freedom degrees of installation and replacement of the system, a method for sterilizing the system is provided, and a method for cleaning the system is provided. A central water purification system comprises: a supply pipe(10) for supplying raw water; a first filtration unit(20) for primarily purifying or filtering raw water; a filtered water supply controller(30) for transferring purified filtered water; a second filtration unit(40) for filtering filtered water again; a water storage tank(50) communicating with a first discharge pipe(54) and a second discharge pipe(56) to receive and store purified water; a purified water supply unit(60) including a hot water tank(62) connected to the first discharge pipe of the water storage tank and a cold water tank(64) connected to the second discharge pipe; a drain line(70) for discharging purified water stored in the cold water tank of the purified water supply unit to the outside; a sterilization unit(80) for supplying sterilizing water into the water storage tank; and a controller(90) for controlling the filtered water supply controller, a valve(72) of the drain line, and the sterilization unit.

Description

A Central Purification System Equipped with Sterilization Device, Method for Sterilizing the System and Method for Cleaning the System

The present invention relates to a central water purification system having a sterilization device, and more particularly, to a central water purification system capable of automatically sterilizing purified water by generating silver ions to generate sterilized water and supplying it to a storage tank. It relates to a sterilization method and a cleaning method of the central water purification system.

As living standards improve and the importance of drinking water increases, various forms of water purifiers are becoming more popular in the home. Generally, a water purifier uses a pretreatment filter, an activated carbon filter, an ultrafiltration membrane filter, a reverse osmosis membrane filter, etc. According to such a general water purifier, raw water such as tap water is purified and used as drinking water in such a manner that the water passing through the activated carbon filter completely removes residual chlorine in the tap water.

However, such a water purifier has been shown to cause a variety of problems. First, there is a problem in that the purified water may disinfect and disinfect, and the microorganisms proliferated in the activated carbon filter may flow out, and the microorganisms introduced from the outside may proliferate in the reservoir tank.

On the other hand, various methods of sterilization have been proposed for sterilizing bacteria or microorganisms in the entire water tank or water purification system. Such sterilization methods are essentially provided with sterilization devices. One example of such a sterilization apparatus is disclosed in Korean Patent No. 10-447901.

Underwater bacterial sterilization apparatus using the electrolysis of the Patent No. 10-447901 is a through hole is formed up and down to the center of the hollow cylindrical body, the water supply port is formed on one side of the body and the drain is formed in a position opposite to the water supply port A main body having a rectangular flange extending to the upper and lower parts of the body, a base plate including a packing in the center of the rectangular plate mounted on the lower flange of the main body, and a top plate which is a rectangular flat plate mounted to the upper flange of the main body; Done; The main body includes a cylindrical block having a connection part connected to the water supply port inside the through hole formed at the center of the main body, and a cylindrical positive electrode inside the cylindrical block, and the bottom plate has a multi-stage cylindrical protrusion at the center of the square plate. Is formed, the negative electrode is formed to penetrate the inside of the protrusion to project the upper end, and has a configuration that includes a cylindrical separation tube surrounding the electrode.

According to this configuration, the water generated from the positive electrode is not mixed freely and neutralized by electrolysis, thereby greatly improving the dissolved oxygen amount of the treated water, increasing sterilization power, and asymmetrically forming the electrode surface area so that scale is not deposited on the electrode surface. Therefore, the electrolysis efficiency can be improved and the amount of electricity used can be reduced.

However, the bactericidal bacteria sterilization apparatus using the electrolysis of the Patent No. 10-447901 has a problem that it is difficult to install and replace due to the complicated construction, excessive manufacturing cost, and limited size and shape.

Therefore, the present invention has been invented to solve the above-described problems, the object of the present invention is to simplify the configuration, inexpensive manufacturing costs, using sterilized water containing silver ions using electrolysis, which improves the freedom of installation and replacement It is to provide a central water purification system having a sterilization device for generating.

Another object of the present invention is to provide a method for automatically sterilizing a central water purification system by generating sterilized water containing silver ions using electrolysis.

Still another object of the present invention is to provide a method of automatically cleaning the central water purification system by generating sterilized water containing silver ions using electrolysis.

Such objects include a supply pipe for supplying raw water; A first filtration device communicatively installed in the supply pipe to primarily purify or filter the raw water supplied through the supply pipe, and formed of a sediment filter; Filtrate supply control device comprising a pipe connected to the first filtration device, a solenoid valve for opening and closing the pipe, and a water pump installed in the pipe to deliver the filtered water purified by the first filtration device. ; A second filtration device connected to a pipe behind the filtered water supply control device to filter the filtered water again, the second filtering device including a precarbon filter, a membrane filter, a post carbon filter, and a composite filter continuously; A storage tank connected to a pipe connected to the second filtration device for receiving and storing the purified water filtered by the second filtration device, and having a lower portion communicating with the first discharge pipe and the second discharge pipe for supplying the purified water; It is connected to the first discharge pipe of the water storage tank and supplied with purified water to heat the hot water to supply to the drinking water, and to the drinking water connected to the second discharge pipe to receive the purified water and to supply it to the drinking water as a cold water tank. A purified water supply device; A drainage line communicating with the cold water tank and installed with a valve for controlling the discharge of the cold water or purified water discharged to discharge or drain the cold water or purified water stored in the cold water tank of the purified water supply device to the outside; In order to supply the sterilizing water to the water storage tank, a water supply line connected from the drainage line to the water storage tank, a water supply pump installed in the water supply line for water supply and control, and a silver ion installed at the rear of the water supply pump of the water supply line Sterilization apparatus consisting of a sterilizing water generator for generating sterilizing water containing; And a controller for controlling the solenoid valve and the water pump of the filtered water supply control device, the valve of the drain line, the water pump of the sterilizer and the sterilizing water generator.

In addition, the above objects, in the sterilization method of the central water purification system, by operating the water supply pump installed in the water supply line of the sterilization device in the normal water purification operation state of the central water purification system to supply the purified water supplied from the drain line connected to the cold water tank Sending through; Applying power to each electrode of the sterilizing water generator of the sterilizing apparatus and supplying purified water supplied from the water pump to the sterilizing water generator to generate sterilizing water containing silver ions through electrolysis; And sterilizing the silver water generated in the sterilizing water generator and supplying the sterilizing water contained in the sterilizing water generator to the storage tank through the water supply line to sterilize the internal water and the purified water. Can be.

In addition, another object of the present invention, in the cleaning method of the central water purification system according to the present invention, by operating the water supply pump installed in the water supply line of the sterilization apparatus in the normal water purification operation state of the central water purification system supplied from the drain line connected to the cold water tank Transmitting water through a water supply line; Applying power to each electrode of the sterilizing water generator of the sterilizing apparatus and supplying purified water supplied from the water pump to the sterilizing water generator to generate sterilizing water containing silver ions through electrolysis; And sterilizing the inside and purified water of the storage tank by supplying the sterilization water containing silver ions generated in the sterilization water generator to the storage tank through the water supply line. And close the solenoid valve installed in the supply pipe of the filtered water supply control device and stop the operation of the water pump, while operating the sterilization water generator and operating the water pump to continuously generate sterilized water containing silver ions and supply it to the water storage tank. The central water purification system comprising the steps of cleaning the hot water tank and the cold water tank of the water storage tank and the purified water supply device by discharging the sterilized purified water or wastewater by opening the valve installed in the drain line connected to the cold water tank after sterilization. Can be achieved by a cleaning method.

According to the central water purification system having a sterilizing device according to the present invention, the sterilization method and the cleaning method of the central water purification system, by simply and automatically supplying sterilization water containing silver ions to the purified water stored in the inner tank of the water storage tank It is possible to automatically sterilize the bacteria generated or parasitic in the reservoir tank, thereby improving the productability and reliability.

In addition, it is possible to automatically sterilize and clean the storage tank and / or the filtration device for sterilizing water containing silver ions periodically or temporarily with the central water purification system, thereby improving convenience and safety.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a central water purification system having a sterilization apparatus according to the present invention, Figure 2 is a perspective view showing an anion generator applied to the central water purification system according to the present invention, Figure 3 is an anion of Figure 2 Figure 4 is a longitudinal sectional view of the generating apparatus, Figure 4 is a flow chart showing a sterilization method of the central water purification system according to the present invention, Figure 5 is a flow chart showing a cleaning method of the central water purification system according to the present invention.

First, as shown in FIGS. 1 to 3, the central water purification system according to the present invention includes a supply pipe 10 for supplying raw water such as tap water. The supply pipe 10 may be formed of various materials and includes a supply pipe 10 directly connected to a water pipe or connected to a water, a water source, a water tank, or the like.

At the end of the supply pipe 10, a first filtration device 20 for primaryly purifying or filtering the raw water supplied through the supply pipe 10 is installed. The first filtration device 20 is preferably formed of a cement filter.

Behind the first filtration device 20 is provided a filtered water supply control device 30 for controlling the supply of the primary filtration water filtered by the first filtration device 20 to the second filtration device which will be described later. The filtered water supply control device 30 is installed in a pipe 32 connected to the first filtration device 20 to provide a solenoid valve 34 for opening and closing the pipe 32, and the pipe 32 to be installed in the filtered water. It is preferable to have a water pump 36 for delivering water.

A second filtration device 40 is installed at the rear of the filtered water supply control device 30 to again filter the filtered water supplied through the pipe 32.

The second filtration device 40 includes a precarbon filter 42, a membrane filter 44, a post carbon filter 46, and a composite filter 48 continuously. Each of the filters 42; 44; 46; 48 is preferably formed as a one-way filter, that is, a filter having a configuration in which raw water or filtrate is introduced into one side of the filter and discharged to the other side.

In particular, the outlet side of the membrane filter 44 of the second filtration device 40 is provided with a separate drain port 442 for cleaning the central water purification system or for discharging the filtered or residual water of the filter, the drain port 442 ) May be connected to the drain pipe 444 to discharge the filtered or residual water to the outside of the central water purification system.

The second filtration device 40 is connected to the water storage tank 50 for receiving and storing the purified water finally filtered by the second filtration device by a pipe 52. The first discharge pipe 54 and the second discharge pipe 56 for actually supplying or providing the purified water of the water storage tank 50 to the outside at the lower portion or proper position of the water storage tank 50 communicate with the inside thereof. do.

The water storage tank 50 is actually connected to the purified water supply device 60 for supplying purified water to the user or drinker.

The purified water supply device 60 is connected to the first discharge pipe 54 is connected to the hot water tank 62 and the second discharge pipe 56 for supplying the purified water to receive the purified water to supply the drinking water to the drinking water And a cold water tank 64 for receiving purified water and cooling the purified water to supply the drinking water.

On the other hand, the drainage line 70 for discharging or draining the cold water or purified water stored in the cold water tank 64 to the outside as necessary or connected to the lower or proper position of the cold water tank (64). The end of the drain line 70 is connected to the valve 72 for controlling the purified water or wastewater discharged through the drain line 70.

The drainage line 70 is connected to a sterilizer 80 for sterilizing or cleaning the water storage tank 50 and the purified water supply device 60.

The sterilizer 80 is connected to the water storage tank 50 from the drainage line 70 and has a water supply line 82 for supplying purified water discharged from the purified water supply device 60 to the water storage tank 50. .

The water supply line 82 is provided with a water supply pump 84 for transmitting water purified from the drain line 70 as well as controlling the water supply. The water pump 84 is preferably formed of a diaphragm water pump for controlling the supply of purified water by a control device to be described later.

In particular, a sterilization water generator 86 for actually providing sterilization water to the water storage tank 50 is installed at the rear of the water supply pump 84 of the water supply line 82. The sterilizing water generator 86 is preferably formed of a silver ion generator. The sterilizing water generator 86 has an inlet port 861 directly connected to the water supply line 82, a cylindrical body 862 for receiving purified water flowing in communication with the inlet port 861, and A positive electrode 863 formed on one side of the body 862 and formed of silver (Ag) immersed in purified water flowing into the body 862, and a negative electrode opposite to the positive electrode 863 and forming one electrode pair 864 and a discharge port 865 formed on the other side of the body 862 to supply sterilized water containing silver ions to the water supply line 82.

In addition, according to one main feature of the invention, there is provided a controller 90 for controlling the sterilization device 80 to periodically or automatically sterilize or clean the central water purification system. Of course, the controller 90 will obviously control the sterilizer 80, as well as other operating devices constituting the central water purification system.

Optionally, the drain pipe 444 of the second filtration device 40 includes filtered water present in the filters of the first filtration device 20 and a part of the second filtration device 40 when the central water purification system is cleaned. It is preferable that the discharge pump 100 that can be discharged to further installed. Of course, the discharge pump 100 is connected to the controller 90 can be automatically controlled.

Hereinafter, the operation and operation mode of the central water purification system having the sterilization apparatus according to the present invention configured as described above, the sterilization method and the cleaning method of the central water purification system will be described in detail.

First, in a state in which the drinker or the user is normally supplied with purified water, raw water provided through a water pipe or another source of raw water is supplied to the first filtration device 20 through the supply pipe 10 and primarily filtered by a sediment filter. do.

The filtered water filtered by the first filtration device 20 is supplied to the second filtration device 40 in a large amount by operating the water supply pump 36 under the opening of the solenoid valve 34 provided in the pipe 32.

The filtered water supplied to the second filtration device 40 is completely filtered while passing through the precarbon filter 42, the membrane filter 44, the post carbon filter 46, and the composite filter 48 in order to generate purified water.

The purified water completely filtered in the second filtration device 40 is supplied to and stored in the storage tank 50 through the pipe 52.

Thus, the purified water stored in the storage tank 50 is supplied to the hot water tank 62 and the cold water tank 64 of the purified water supply device 60 through the first discharge pipe 54 and the second discharge pipe 56, respectively, and finally It is supplied selectively to the drinker or the user.

On the other hand, in order to maintain a general water purification state to normally filter the raw water and supply the filtered purified water as described above, the water storage tank 50 or purified water by a predetermined time or by a user input to the control device The feeder 60 can be sterilized or cleaned.

That is, as shown in Figure 4, in the normal water purification state controller 90 operates the water supply pump 84 installed in the water supply line 82 of the sterilization device 80, the drain line connected to the cold water tank 64 The purified water supplied from 70 is sent (S100). Here, since the water supply pump 84 is formed in a diaphragm type, the water supply line 82 is opened and the purified water is supplied while being operated by applying power.

Thereafter, power is applied to the electrodes 863 and 864 of the sterilizing water generator 86 and the purified water supplied from the water pump 84 is supplied to the sterilizing water generator 86 to include silver ions through electrolysis. Produce sterilized water (S102). Here, the purified water supplied from the water pump 84 is introduced into the body 862 through the inlet port 861 of the sterilization water generator 86 by electrolysis by the respective electrodes 863 and 864 formed of silver. Silver ions are generated, and thus the silver ions thus formed are contained in purified water.

Next, silver is generated in the sterilizing water generator and supplies the sterilizing water contained in the sterilizing water generator to the water storage tank 50 through the water supply line 82 (S104).

As such, the sterilized water containing silver ions supplied to the storage tank 50 is supplied to the storage tank 50 and mixed with the purified water supplied through the pipe 52 to sterilize the purified water in the storage tank 50. You can do it.

In addition, the user is provided with purified water through the hot water tank 62 and the cold water tank 64 of the purified water supply device 60 in the state in which the sterilized water containing silver ions in the storage tank 50 is introduced with the purified water, Naturally, the hot water tank 62 and the cold water tank 64 can be sterilized.

On the other hand, as shown in Figure 5, after a certain time of use or if the user wants to automatically or by operating the controller 90, the supply pipe 32 of the filtered water supply control device 30 While closing the solenoid valve 34 installed in the water supply and the operation of the water pump (36) while operating the sterilizing water generator 86 and operating the water pump (84) to continuously generate sterilized water containing silver ions After sterilization by supplying to the storage tank 50 or after sterilization, the valve 72 installed in the drainage line 70 connected to the cold water tank 64 is opened to discharge the sterilized purified water or waste water to discharge the storage tank 50 and the purified water. The hot water tank 62 and the cold water tank 64 of the supply device 60 are cleaned (S106).

At the same time as or after the cleaning step S106, the discharge pump 100 is connected to the drain pipe 444 from the outside to free carbon filter 42 of the first filtration device 20 and the second filtration device 40. And cleaning the first filtration device 20 and the second filtration device 40 by discharging the filtered water or the partially filtered purified water remaining in the membrane filter 44 to the outside (S108).

As described above, the experimental model was constructed for sterilizing and cleaning the central water purification system, and the sterilization capacity was requested to the Korea University Health Science Research Institute.

Water test result

Water source Inspection items General bacteria Total coliform group Coliform / Functional Coliform Group One 20,000 voice voice 2 4 voice voice 3 2 voice voice

Sewage Source 1: The condition measured by culturing bacteria in the reservoir tank of central water purification system

Water source 2: The state measured after 10 minutes by mixing the water source 1 with sterilizing water containing silver ions using a sterilizing water generator

Water source 3: The state measured after 30 minutes by mixing the water source 1 with sterilization water containing silver ions using a sterilizing water generator

Inspection standard

Inspection items General bacteria Total coliform group Escherichia coli group Water quality standard 100 CFU / mL Not detected / 100mL Not detected / 100mL

As can be seen from the above table, in the central water purification system according to the present invention, general bacteria generated or parasitic in the reservoir tank were significantly reduced or almost all sterilized by the sterilized water containing silver ions.

Therefore, since the central water purification system, in particular, the storage tank, which is the most multiplying or maintained bacteria and foreign substances can be completely sterilized and cleaned, the sanitary and safe purified water is always supplied.

While a preferred embodiment according to the present invention has been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

1 is a schematic view showing a central water purification system having a sterilization apparatus according to the present invention as a whole.

Figure 2 is a perspective view showing a sterilizer of the water purification system of Figure 1;

3 is a cross-sectional view taken along line III-III of FIG. 2;

Figure 4 is a flow chart showing a sterilization method of the central water purification system according to the present invention.

5 is a flow chart showing a cleaning method of the central water purification system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: supply pipe 20: first filtration device

30: filtered water supply control device 40: second filtration device

50: water storage tank 60: water purification device

70: drain line 80: sterilizer

90: controller

Claims (6)

A supply pipe 10 for supplying raw water; A first filtration device (20) installed in communication with the supply pipe (10) for primary purification or filtration of raw water supplied through the supply pipe (10) and formed of a sediment filter; A pipe 32 connected to the first filter device 20, a solenoid valve 34 for opening and closing the pipe 32, to return the filtered water purified by the first filter device 20, and A filtered water supply control device (30) installed in the pipe (32) and consisting of a water pump (36) for feeding the filtered water; In order to filter the filtrate again, it is installed in communication with a pipe behind the filtrate supply control device 30, and the precarbon filter 42, the membrane filter 44, the post carbon filter 46 and the composite filter 48 A second filtration device 40 continuously provided with; In order to receive and store the purified water filtered by the second filtration device 40, it is connected to the pipe 52 connected to the second filtration device 40, the lower portion of the first discharge pipe for providing the purified water ( 54) and the reservoir tank 50 in communication with the second discharge pipe (56); The hot water tank 62 is connected to the first discharge pipe 54 of the water storage tank 50 to receive the purified water, and the hot water is heated to supply the drinking water, and the second discharge pipe 56 is connected to the hot water tank. Water supply device 60 consisting of a cold water tank (64) for receiving and cooling the supplied to the drinking water; In order to discharge or drain cold water or purified water stored in the cold water tank 64 of the purified water supply device 60 to the outside, a valve for communicating with the cold water tank 64 and controlling the discharge of the discharged cold water or purified water Drain line 70 is installed; In order to supply the sterilizing water to the water storage tank 50, a water supply line 82 connected from the drain line 70 to the water storage tank 50, and installed in the water supply line 82 to transmit and control water purification Sterilization apparatus (80) consisting of a water supply pump (84) and a sterilization water generator (86) installed at the rear of the water supply pump (84) of the water supply line (82) for generating sterilization water containing silver ions. ; And The solenoid valve 34 and the water feed pump 36 of the filtered water supply control device 30, the valve 72 of the drain line 70, the water feed pump 84 and the sterilizing water of the sterilizer 80 And a controller (90) for controlling the generator (86). The drain port 442 is installed at the outlet side of the membrane filter 44 of the second filtration device 40 to clean the central water purification system or to discharge the filtered or residual water of the filter. A water pipe (444) is connected to the port (442), and the water pipe (444) is a central water purification system, characterized in that a water pump (100) is installed to discharge the filtered water to the outside of the central water purification system. The body of claim 1, wherein the sterilizing water generator 86 has an inlet port 861 directly connected to the water supply line 82, and a cylindrical body communicating with the inlet port 861 and receiving purified water. 862, a positive electrode 863 formed on one side of the body 862 and formed of silver (Ag) immersed in purified water flowing into the inside, and a negative electrode opposite to the positive electrode 863 and forming one electrode pair 864 and a discharge water port (865) formed on the other side of the body (862) and supplying sterilization water containing silver ions to the water supply line (82). In the sterilization method of the central water purification system according to any one of claims 1 to 3, The water supply pump 84 installed in the water supply line 82 of the sterilization device 80 in the normal water purification operation state of the central water purification system operates the water supply from the drain line 70 connected to the cold water tank 64. Sending through the line 82 (S100); Electrolysis is performed by applying power to each electrode 863; 864 of the sterilizing water generator 86 of the sterilizing device 80 and supplying purified water supplied from the water pump 84 to the sterilizing water generator 86. Generating sterile water containing silver ions through (S102); And Sterilizing water generated by the generation of silver ions in the sterilization water generator 86 is supplied to the storage tank 50 through the water supply line 82 to sterilize the inside of the storage tank 50 and purified water (S104) Sterilization method of the central water purification system comprising a. In the cleaning method of the central water purification system according to any one of claims 1 to 3, The water supply pump 84 installed in the water supply line 82 of the sterilizer 80 in the normal water purification operation state of the central water purification system operates the water supply from the drain line 70 connected to the cold water tank 64. Transmitting water through the water supply line 82 (S100); Electrolysis is performed by applying power to each electrode 863; 864 of the sterilizing water generator 86 of the sterilizing device 80 and supplying purified water supplied from the water pump 84 to the sterilizing water generator 86. Generating sterile water containing silver ions through (S102); Sterilizing the internal water and the purified water by supplying the sterilizing water containing silver ions generated by the sterilizing water generator 80 to the water storage tank 50 through the water supply line 82 (S104); And Closing the solenoid valve 34 installed in the supply pipe 32 of the filtered water supply control device 30 and stops the operation of the water pump 36 while operating the sterilizing water generator 86 and operating the water pump 84 Sterilization water containing silver ions is continuously generated and supplied to the water storage tank 50 for sterilization and then sterilized by opening the valve 72 installed in the drain line 70 connected to the cold water tank 64. And discharging the waste water to clean the hot water tank (62) and the cold water tank (64) of the water storage tank (50) and the purified water supply device (60) (S106). The pre-carbon filter of the first filtration device 20 and the second filtration device 40 using the discharge pump 100 installed in the drain pipe 444 from the outside after the cleaning step (S106). 42) and cleaning the first filtration device 20 and the second filtration device 40 by discharging the filtered water or the partially filtered purified water remaining in the membrane filter 44 to the outside (S108). Method for cleaning the central water purification system characterized in that.

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