WO2011112061A2 - Clean water device and a control method therefor - Google Patents

Abstract

Provided is a clean water device comprising: a supply-water pump for pressurising supply water; a container into which the supply water enters via a first opening linked to the supply-water pump, and from which clean water is discharged via a second opening; a filtration unit which is for filtering the supply-water and so producing the clean water, and which fills the inside of the container between the first opening and the second opening; and a microbicidal unit which is provided inside the container together with the filtration unit. Also provided is a control method for the clean water device.

Description

Water Purifier and Control Method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying apparatus and a control method thereof, and more particularly, to a water purifying apparatus capable of performing a multi-function such as a water purifying mode, a back washing mode, a washing mode, and a control method thereof.

Water such as tap water, drinking water, plant (vegetables) cultivation water, food processing water, swimming pool water, industrial water used in factories, etc., can be removed by contaminating various kinds of contaminants if purified water is processed before entering the process. It can solve the problem of water use caused by foreign substances in the body.

In addition, there is an advantage that can greatly reduce the amount of water used by reusing the water once again used water treatment. To this end, a water purifying apparatus for treating water in various forms is provided.

However, if the water purification process is repeated, since contaminants accumulate repeatedly inside the water purification device, it is necessary to provide a washing means for washing the water purification device, and a backwashing means needs to be provided to enhance the washing function. Since long-term use may cause bacteria to multiply inside the water purification device, it is necessary to provide a sterilization means for sterilizing the water purification device.

The present invention has been made in view of this need, so as to improve the problems of water use and to reduce the amount of water used. The present invention provides a water purification device capable of purifying, backwashing and washing water, and in addition, a water purification device capable of simultaneously performing a sterilization function and a control method thereof.

The water purification device of the present invention, a feed water pump for pressurizing the feed water; A container through which the feed water is drawn in through a first opening to which the feed water pump is connected and the purified water is discharged through a second opening; A filtration unit filling the inside of the container between the first opening and the second opening by filtering the feed water to generate the purified water; A sterilization unit installed inside the container together with the filtration unit; Includes, the purified water generated by the filtration unit and the sterilization by the sterilization unit is performed at the same time inside the container.

In the control method of the water purifying apparatus of the present invention, the supply water is supplied to the inside of the container through the first opening of the container connected to the feed water pump and the first pipe, the feed water is passed through the filtration unit to generate purified water, Discharging the purified water through a second opening of the container to a purified water outlet outside the container; The backwash water is supplied to the inside of the container by the backwash water pump connected to the third opening of the container and the fifth pipe, and the backwash water flows in the direction toward the first opening that is the reverse direction of the water purification direction. A backwashing step of backwashing the filtration unit and discharging the backwashing water discharged from the first opening to a drain connected to the first opening and the second pipe; A washing step of washing the filter part while the supply water supplied through the first opening flows in the direction of the second opening, and the water discharged after the washing is discharged to the drain part connected to the second opening and the fourth pipe; It includes.

According to the present invention, the filtration and sterilization can be performed at the same time, and since the sterilization can be performed at the time of water purification and backwashing, it is possible to block the possibility of bacteria propagation in the filtration unit early. In addition, since the third opening is separately provided and its installation position is optimized, it is possible to reduce the flow rate of the backwash water and to secure the strong backwashing power while reducing the electricity consumption. In addition, by installing the low-pump backwash water pump separately from the high-pump feed water pump, the back-flush can be backwashed with low head pressure and the operating cost can be saved. In addition, when the sterilization unit is sterilized at the same time as the filtration or immediately after the filtration due to the characteristics of bacteria that grow exponentially with time, the sterilization effect can be maximized. In addition, when the sterilization unit is finished outside of the container, there is no function to wash the sterilization unit, so that foreign matters stuck to the lamp cannot be removed, but according to the present invention, the sterilization unit is installed inside the container and the sterilization unit at the time of back washing or washing. It is easy to remove foreign substances stuck on the surface.

1 is a plan view of the water purifying apparatus of the present invention.

2 is a side view of the water purification device of the present invention in which the water purification step is performed.

3 is a side view of the water purification device of the present invention in which a backwashing step is performed.

4 is a side view of the water purification device of the present invention in which a washing step is performed.

Figure 5 is a side cross-sectional view showing the interior of the container of the present invention during the water purification step.

Figure 6 is a side cross-sectional view showing the interior of the vessel of the present invention during the backwashing step.

Figure 7 is a side cross-sectional view showing the interior of the container of the present invention during the washing step.

8 is a side cross-sectional view showing one embodiment of the UV lamp of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

1 is a plan view of the water purifying apparatus of the present invention. 2 is a side view of the water purification device of the present invention in which the water purification step is performed. 3 is a side view of the water purification device of the present invention in which a backwashing step is performed. 4 is a side view of the water purification device of the present invention in which a washing step is performed. Figure 5 is a side cross-sectional view showing the interior of the container 100 of the present invention during the water purification step. Figure 6 is a side cross-sectional view showing the interior of the container 100 of the present invention during the backwashing step. Figure 7 is a side cross-sectional view showing the interior of the container 100 of the present invention during the washing step. 8 is a side cross-sectional view showing one embodiment of the UV lamps 310a and 310b of the present invention. With reference to FIGS. 1 to 8, the configuration, operation, and control method of the water purifying apparatus of the present invention will be described in detail.

The water purification device of the present invention includes a vessel 100, a feed water pump 181, a filtration unit 200, a sterilization unit 300, and may further include a backwash pump 182.

The container 100 is supplied with supply water, which is the raw water of the water purification step, and the filtration unit 200 is installed. The feed water supplied to the container 100 by the feed water pump 181 passes through the filtration unit 200 and is in a state in which the foreign matter is filtered. The feed water is supplied to the first opening 110 and the purified water is discharged to the second opening 120. In consideration of the fact that the time used in the water purification mode is more than the time used in the backwash mode or the washing mode, the first opening 110 is positioned on the upper side along the height direction of the container 100 and is located below the container 100. When the second opening 120 is located, a flow force due to free fall of water can be obtained, which is more preferable.

The filtration unit 200 is to filter the feed water to generate purified water. The filtration unit 200 is disposed between the first opening 110 and the second opening 120 and a plurality of filtration layers are stacked in the container 100.

The sterilization unit 300 is installed inside the container 100 together with the filtration unit 200, and the sterilization action of the purified water generated by the filtration unit 200 and the sterilization unit 300 is performed within the container 100. It is one of the main features that occurs simultaneously.

The backwash pump 182 pressurizes the backwash water and is provided separately from the feed water pump 181. The backwashing refers to a washing process of rinsing out impurities accumulated in the filtration unit 200 by repetitive water purification operations. Rather than giving water flow in the same direction as the water purification step, the backwash water flows in the reverse direction of the water purification step so that foreign matter accumulated in the filtration unit 200 may easily fall.

In the present invention, a backwash water pump is provided separately from the feed water pump 181. Since the feed water pump 181 may supply purified water to a high height, for example, a large-capacity pump needs to be installed to have a high head, but the backwash water pump only supplies the backwash water to the inside of the container 100. It should be small enough to flow in. Rather than installing only a large-capacity supply water pump 181 and complicatedly installing valves and piping that can reverse the direction of water discharge, installing a small capacity backwash pump and adding simple piping accordingly By separately supplying backwash water according to an embodiment of the present invention can achieve a simple structure of the device and helps improve the durability of the device.

In addition, the feed water pump 181 is to use a high lift because the water must be sent to the destination, the backwash pump 182 may only use a low lift pump because it only needs to perform a backwash function, as described above If the backwash pump 182 is installed separately, it is not necessary to drive the high head feed water pump 181 during backwashing, so it is possible to backwash at a low head pressure to help protect the device and save electricity costs. There is an advantage to being able to perform backwashing.

In backwashing the filtration unit 200, firstly, the second opening 120 is closed. Then, the backwash water is supplied to the third opening 130 by the backwash pump 182. The backwash water is discharged in the direction toward the first opening 110 from the third opening 130 which is the reverse direction in which the purified water is discharged, and the debris stuck to the filtration unit 200 by the flow of water in the reverse direction is easily separated and discharged. do.

The third opening 130 to which the backwash water is supplied is positioned between the first opening 110 and the second opening 120. If the backwashing water is supplied through the second opening 120 without providing the third opening 130, the pressure of the water passing through the strainer 260 or the gravel layer 250 is weakened, and thus the anthracite layer 210 or the There is a problem that the force pushing up the first sand layer 220 and the second sand layer 230 is lowered. Therefore, the backwashing efficiency is improved when the foreign material having a large particle size and a large mass can be sharply pushed upwards. For this purpose, the third opening 130 is positioned above the strainer 260 or the gravel layer 250 and reversed. When the washing water is supplied, the sand layer or anthracite layer 210 in which large particles of foreign matter are deposited may be rapidly floated, thereby obtaining a strong backwashing force even when a small amount of backwashing water is supplied.

After backwashing is completed, it may be able to go into the water purification stage immediately, but in order to further enhance the washing effect, it is better to remove the fine debris once more by flowing water in the same direction as the flow direction of the water during the purification. This process is called a 'washing step'. That is, according to the installation position of the third opening 130, the foreign matter deposited on the strainer 260 or the gravel layer 250 may be floated with a strong force during the back washing, but the strainer 260 or the gravel layer 250 may be lifted. The deposited fine foreign matter is completely removed by the pressure of the fine water flowing in the same direction as the water purification direction. The back washing allows the clean water to flow through the upper side of the filter unit 200 from which the foreign substances have been removed, and passes it through the strainer 260 or the gravel layer 250 in the water direction to achieve a complete washing effect.

In general, the water purifying apparatus of the present invention performs only a water purification step, and periodically performs a backwashing first or a case where a large amount of foreign matter accumulates, and then adds a washing operation. For this purpose, an optimized piping and valve structure is provided.

That is, the first pipe 141 to the fifth pipe 145 is provided, and each of the pipes is provided with a first valve 141a to a fifth valve 145a to open and close the pipe.

The first pipe 141 connects the feed water pump 181 and the first opening 110 and is opened and closed by the first valve 141a. The second pipe 142 connects the drain part 150 and the first opening 110 and is opened and closed by the second valve 142a. The drain unit 150 is located outside the container 100 and is a place where the backwash water discharged to the outside of the container 100 and the completed water are discarded. The third pipe 143 connects the purified water outlet 160 and the second opening 120 to be opened and closed by the third valve 143a. The purified water outlet 160 refers to the outlet of the container 100. The fourth pipe 144 connects the drain part 150 and the second opening 120 and is opened and closed by the fourth valve 144a. The fifth pipe 145 connects the backwash pump 182 and the third opening 130 and is opened and closed by the fifth valve 145a.

When the supply water is purified, as illustrated in FIG. 2, the first valve 141a and the third valve 143a are opened, and the second valve 142a, the fourth valve 144a, and the fifth valve 145a are opened. Is closed. Therefore, the feed water is filtered through a feed water pump 181, the first pipe 141, the first opening 110, the second opening 120 and the third pipe 143 in a sequential order and then purified water outlet ( 160).

When the container 100 is backwashed, as shown in FIG. 3, the fifth valve 145a and the second valve 142a are opened, and the first valve 141a, the third valve 143a, and the fourth valve are opened. 144a is closed. Therefore, the backwash water is discharged to the drain 150 through the backwash pump 182, the fifth pipe 145, the third opening 130, the first opening 110, and the second pipe 142 sequentially. do.

In the cleaning of the container 100, as illustrated in FIG. 4, the first valve 141a and the fourth valve 144a are opened, and the second valve 142a, the third valve 143a, and the fifth valve ( 145a) is closed. Therefore, the supply water is sequentially washed through the supply water pump 181, the first pipe 141, the first opening 110, the second opening 120 and the fourth pipe 144 to clean the container 100. Next, it is discharged to the drain 150.

It is desirable to construct the filter medium using minerals as the filter medium for effective water purification. As one embodiment of the filter medium, at least one of garnet, anthracite, sand, and gravel may be used. These mineral filter media can pass water well and can be used semi-permanently, and keep the deposited position without foreign matter contained in the water flowing down.

Referring to FIG. 5, the operation of the filter unit 200 in the water purification process is well illustrated. The filtration unit 200 includes the anthracite layer 210, the first sand layer 220, the second sand layer 230, the garnet layer 240, the gravel layer 250, and the strainer 260. The first opening 110 is sequentially stacked in the direction toward the second opening 120.

The anthracite layer 210 is a filter material made from coal as the first filtering out foreign substances having a large size exceeding the reference size among the foreign substances contained in the feed water. In the case of filtering small suspended solids first, since most of the residues are deposited only on the upper filtration layer, frequent backwashing occurs. Therefore, the first filtration layer to filter only the particles of the largest size and to pass the foreign matter of the small size has the advantage that can utilize the entire layer of the filtration unit 200.

The particle size of the anthracite layer 210 is 0.75 mm on average. Anthracite is a coal-based filter material, and is manufactured using coal species having a high degree of carbonization in coal, and thus contains a lot of fixed carbon and has a low ash content (ASH) belonging to impurities. Since carbon is a material that is highly resistant to corrosion such as water and chemicals, it is used as a filter medium using these characteristics.

Anthracite is a filter material of a physical treatment method. In addition, the filtration speed is fast and the hardness is high, the wear loss of the particles is very small, the durability by the hydraulic pressure is large, the filtration rate does not decrease even when used for a long time. Acid- and alkali-resistant, no elution of silica, suitable for filter media.

The first sand layer 220 filters out foreign matter having a smaller size than the anthracite layer 210. The sand is made of Jumunjin silica sand and its average particle size is 0.6mm. The first sand layer 220 filters out foreign matter of the next size that is not filtered out of the anthracite layer 210.

The second sand layer 230 is composed of particles larger than the first sand layer 220 and suppresses the first sand layer 220 from flowing down to the garnet layer 240 below. The sand is made of Jumunjin silica sand and its average particle size is 1mm.

The garnet layer 240 filters out foreign matter that has passed through the first sand layer 220 and the second sand layer 230, and is a filter material obtained by heat treating sand, and has an average particle size of 0.3 to 0.5 mm. Garnet is also known as garnet, diamond or promotional stone. Garnet has a specific gravity of about 2.2-2.5, and does not show chemical reactions such as organic decomposition, and acts as a simple physical filter medium to remove fine suspended matter and suspended solids. Garnet is semi-permanent due to its high strength as a filter medium. For example, the chemical composition of garnets includes 71.8% SiO 2, 10.99% Al 2 O 3, Fe 3.32%, TiO 2 0.23%, MnO 0.08%, CaO 0.88%. Melting | fusing point is 1,150 degreeC-1200 degreeC, hardness is MOHS7, specific gravity is 2.2-2.5.

The gravel layer 250 prevents the garnet layer 240 from flowing down to the lower strator. The material is Jumunjin gravel with an average particle size of 1.5mm.

Strainer 260 is the final filtration of foreign matter, and serves to flow the purified water in only one direction. The water once passed through the strainer 260 toward the second opening 120 does not fall back to the strainer 260, thereby reducing the fluctuations in the discharge pressure and discharge of the purified water. As an example, there is a illustrated structure for making a filter paper made of porous material in a funnel shape and attaching a one-way valve thereunder, but it may be implemented in various other structures.

As shown in FIG. 5, in the water purification process, the feed water flows from the upper side to the lower side of the filtration unit 200. This has the effect of adding the flow force due to the water's own weight, but the embodiment of the present invention is not limited to this positional relationship, and there may be various modifications such as reversing or transversing the stacking order of the filtration unit 200.

Sterilization unit 300 is shown in Figure 8 a very specific embodiment. The sterilization unit 300, which allows the sterilization process to proceed simultaneously in the container 100 together with the filtration action of the filtration unit 200, has a UV lamp 310a installed downstream of the filtration unit 200. It is divided into one type or a type having a UV lamp 310b installed through the filtering part 200.

The UV lamps 310a and 310b are fixedly installed on the wall of the container 100, extend through the container 100 to the inside of the container 100, and emit ultraviolet rays into the container 100.

The UV lamps 310a and 310b include a UV light source 311 for emitting ultraviolet light, a tempered glass tube 312 into which the UV light source 311 is inserted, and a first flange 314 covering both ends of the tempered glass tube 312. And a sealing member 316 for sealing a connection portion between the second flange 315, at least one of the first flange 314, and the second flange 315 and the tempered glass tube 312, and the first flange 314. And a fastening rod extending by the separation distance of the second flange 315 and pressure-fastening the first flange 314 and the second flange 315 toward each other.

The UV lamps 310a and 310b are sheared by the pressure of the water pressurized by the feed water pump 181 or the backwash water pump, and the tempered glass tube 312 responds to the shear force and at the same time increases the transmission efficiency of ultraviolet rays. It also performs electrical isolation. Since the tempered glass tube 312 is weak in brittleness, the both ends of the tempered glass tube 312 are supported by the first flange 314 and the second flange 315 so as to further improve the shear force response characteristic, Employment further enhances durability. The sealing member 316 prevents water from flowing into the interior of the UV lamps 310a and 310b and functions as an electrical insulation. A power terminal 317 is provided at a portion exposed to the outside of the container 100 to supply power to the UV light source 311.

 Meanwhile, referring to FIGS. 5 to 7, the operation and control method of the water purifying apparatus of the present invention will be described again.

As described above, the purification step, backwashing step and washing step are carried out sequentially.

The water purification step supplies the supply water into the vessel 100 through the first opening 110 of the vessel 100 connected to the feed water pump 181 and the first pipe 141, and supplies the feed water to the filtration unit 200. ) To generate purified water, and discharge the purified water to the purified water outlet 160 outside the container 100 through the second opening 120 of the container 100.

In the backwashing step, the backwash water is supplied into the inside of the container 100 by a backwash water pump connected to the third opening 130 of the container 100 and the fifth pipe 145, and the backwash water is in the direction of generation of the purified water. Backwashing the filtration unit 200 while flowing in the direction toward the first opening 110 in the reverse direction, the backwash water discharged from the first opening 110 to the first opening 110 and the second pipe 142. A step is discharged to the connected drain portion 150.

In the washing step, the feed water supplied through the first opening 110 flows in the direction of the second opening 120 to clean the filtration unit 200, and the water discharged after the washing is discharged from the second opening 120 and the fourth pipe. Discharged to the drain portion 150 connected to 144.

The sterilization step is a step of sterilizing the inside of the container 100 by installing the sterilization unit 300 together with the filtration unit 200 inside the container 100 and emitting ultraviolet rays from the sterilization unit 300. The sterilization step may be performed simultaneously with each of the water purification step, the backwashing step and the washing step, or may be performed at an empty time between each step.

The present invention saves water consumption (waste water) and electricity costs during backwashing, and reduces the operating cost, and is a device for supplying purified water of a large amount of water used for swimming pool or various industrial water (heavy water, rainwater, ground water). Components such as foreign matter, turbidity, and chromaticity are filtered by the filter unit 200, and at the same time, sterilization unit 300 that emits ultraviolet rays can sterilize pathogenic bacteria such as Escherichia coli, Vibrio bacteria, and Salmonella bacteria and general bacteria. .

Water introduced into the upper end of the filter unit 200 is first purified while passing through the filter medium in the filter unit 200, and passes through the strainer 260 provided below the filter unit 200 to lower the filter unit 200. Alternatively, the second sterilization is disinfected in the UV lamps 310a and 310b installed through the filtration unit 200.

Installation area is reduced by integrating the filtration unit 200 and the sterilization unit 300, and the ultraviolet sterilization unit 300 can be operated even during the back washing, so that the contaminated water of the back washing water can be sterilized and filtered. It is possible to block the contamination of the part 200 before the washing step.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

Claims (9)

A feed water pump for pressurizing the feed water; A container through which the feed water is drawn in through a first opening to which the feed water pump is connected and the purified water is discharged through a second opening; A filtration unit filling the inside of the container between the first opening and the second opening by filtering the feed water to generate the purified water; A sterilization unit installed inside the container together with the filtration unit; Including; The water purification device in which the purified water generation by the said filtering part and the sterilization by the said sterilization part are simultaneously performed inside the said container. The method of claim 1, A backwash pump for pressurizing and supplying backwash water; Including, A third opening of the container is formed between the first opening and the second opening, During backwashing of the filtration unit, the second opening is closed, the backwash water is supplied to the third opening by the backwashing pump, and the reverse direction of the first opening is reverse to the direction in which the purified water is discharged. Purifier that drains the wash water. The method of claim 2, A first pipe connecting the feed water pump and the first opening and opened and closed by a first valve; A second pipe which is located outside the container and connects the drain portion through which the backwash water is discharged and the first opening, and is opened and closed by a second valve; A third pipe which is located outside the container and connects the purified water outlet through which the purified water is discharged and the second opening and is opened and closed by a third valve; A fourth pipe connecting the drain part and the second opening and opened and closed by a fourth valve; A fifth pipe connecting the backwash pump and the third opening and opened and closed by a fifth valve; Water purification device comprising a. The method of claim 3, When the supply water is purified, the first valve and the third valve are opened and the purified water is sequentially passed through the supply water pump, the first pipe, the first opening, the second opening, and the third pipe. Discharged to the purified water outlet, When the vessel is backwashed, the fifth valve and the second valve are opened and the backwash water passes sequentially through the backwash pump, the fifth pipe, the third opening, the first opening, and the second pipe. Is discharged to the drain portion, When the container is washed, the first valve and the fourth valve are opened and the container is sequentially washed through the feed water pump, the first pipe, the first opening, the second opening, and the fourth pipe. The water purifying device in which one water is discharged to the drain portion. The method of claim 1, The filtration unit, Anthracite layer which is a filter material made from coal by filtering out foreign substances of large size exceeding a standard size among foreign substances contained in the feed water, A first sand layer that filters foreign matter smaller than the anthracite layer; A second sand layer composed of particles larger than the first sand layer and suppressing leakage of the first sand layer; The garnet layer which is the filter material which heat-treated the sand by filtering the foreign material which passed the said 1st sand layer and the said 2nd sand layer, Gravel layer to suppress leakage of the garnet layer, A strainer for final filtration of the foreign matter, The water purifier which is sequentially laminated in the direction from the first opening toward the second opening. The method of claim 1, The sterilizing unit is a water purifier, which is installed downstream of the filtering unit or is installed through the filtering unit and comprises a UV lamp for emitting ultraviolet light. The method of claim 6, The UV lamp may include at least one of a UV light source emitting ultraviolet light, a tempered glass tube into which the UV light source is inserted, a first flange and a second flange covering both ends of the tempered glass tube, and a first flange and a second flange. And a sealing member for sealing a connecting portion of the tempered glass tube, and a fastening rod extending by a separation distance between the first flange and the second flange and press-fitting in a direction approaching the first flange and the second flange to each other. Include, The UV lamp is a water purification device extending through the container into the interior of the container. Feed water is supplied into the vessel through a first opening of a vessel connected to a feed water pump and a first pipe, the feed water is passed through a filtration unit to generate purified water, and the purified water is supplied to the second opening of the vessel. Water purification step of discharging to the purified water outlet outside the vessel through; The backwash water is supplied to the inside of the container by the backwash water pump connected to the third opening of the container and the fifth pipe, and the backwash water flows in the direction toward the first opening that is the reverse direction of the water purification direction. A backwashing step of backwashing the filtration unit and discharging the backwashing water discharged from the first opening to a drain connected to the first opening and the second pipe; A washing step of washing the filter part while the supply water supplied through the first opening flows in the direction of the second opening, and the water discharged after the washing is discharged to the drain part connected to the second opening and the fourth pipe; Control method of a water purification apparatus comprising a. The method of claim 8, A sterilization step of disinfecting the inside of the container by installing a sterilization part together with the filtration part inside the container and emitting ultraviolet rays from the sterilization part; The control method of the water purifying device further comprising.

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