KR100872340B1 - Purification water apparatus of having sub reverse osmosis filter - Google Patents

Abstract

A water purification system comprising an auxiliary reverse osmosis membrane filter is provided to minimize contamination of purified water due to ion exchange with raw water or concentrated water, and to minimize the concentration value of contaminants included in purified water initially discharged, thereby obtain reliability from users. A water purification system comprising an auxiliary reverse osmosis membrane filter comprises: at least one pre-treatment filter(1) in which raw water flows; a reverse osmosis membrane filter(3) filtering foreign materials included in raw water flown in from the pre-treatment filter to separately discharge purified water and concentrated water; an auxiliary reverse osmosis membrane filter(13) installed on a branch pipeline(12) branched off from a pipeline between the pre-treatment filter and the reverse osmosis membrane filter; and first and second valves(14,15) respectively installed on the pipeline and branched pipeline to close or open the pipeline and branched pipeline when signals applied to the first and second valves from the outside.

Description

Purification water apparatus of having sub reverse osmosis filter

1 is a schematic view of a water purification device including a reverse osmosis membrane filter according to the prior art,

2 is a view showing another embodiment of a water purification device including a reverse osmosis membrane filter according to the prior art,

3 is a schematic diagram of a water purification device including an auxiliary reverse osmosis membrane filter according to an embodiment of the present invention;

4 is a schematic view of a water purification device including an auxiliary reverse osmosis membrane filter according to another embodiment of the present invention;

FIG. 5 is a cross-sectional view of the reverse osmosis membrane filter shown in FIG. 3.

* Explanation of symbols used in the main part of the drawing

One; Sediment filter

2; Free Carbon Filter

3; Reverse osmosis membrane filter

3a; Filter housing

4; Post Carbon Filter

5; Concentrated Water Control Valve

6; Auto shutoff valve

9; Water purification outlet

11; pipeline

12; Branch line

13; Secondary reverse osmosis membrane filter

14; 1st valve

15; 2nd valve

16,16a; Check valve

17; pipeline

18; Pressure detection sensor

20; valve

The present invention is a water purification system including a reverse osmosis membrane filter for filtering and condensing the concentrated water from the raw water, the membrane creep phenomenon (membrane between the membrane) when the facet (refer to the water discharge outlet) and the like is reused after a certain time The present invention relates to a water purification device including an auxiliary reverse osmosis membrane filter which prevents recontamination of purified water due to re-ion exchange of purified water and concentrated water so that the purified water becomes equal to raw water concentration.

More specifically, when the water purification system to which the reverse osmosis membrane filter is applied is stopped for a predetermined time and reused, the membrane creep is diluted by diluting contaminants included in the raw water and the concentrated water of the main reverse osmosis membrane filter by the purified water supplied from the auxiliary reverse osmosis membrane filter. The present invention relates to a water purification device including an auxiliary reverse osmosis membrane filter that prevents a phenomenon and provides clean water to a user.

As shown in Figure 1, the water purification system using a reverse osmosis membrane filter according to the prior art, rust, soil, sand, suspended in raw water (tap water, groundwater) flowing through a hose connected to the tap (not shown) A sediment filter (1) for removing the micron-sized foreign matter by the nonwoven fabric,

Pre-carbon filter (2) to remove chlorine (trihalomethane), organic chemicals, etc. remaining in water by adsorption method of activated carbon made by burning mineral or palm tree at high temperature ,

Reverse osmosis filter (R / O), which purifies various pollutants, bacteria, inorganic substances, heavy metals, etc. in water through fine pores of 0.0001 micron size by polyamide composite membrane (3) Wow,

A post-carbon filter (4) for improving the taste of water by purifying foreign substances such as odors and gaseous components in water,

And a purified water storage tank 7 for storing purified water passing through the reverse osmosis membrane filter 3.

At this time, the wastewater (concentrated water) filtered by the aforementioned reverse osmosis membrane filter 3 is discharged to a designated place via the concentrated water control valve 5.

In the drawings, reference numeral 6 denotes an auto shutoff valve that automatically blocks the inflow of raw water to the water filter when the pressure set according to the water level of the purified water filled in the purified water storage tank 7 is reached. It is a check valve to prevent the backflow of water when the pressure in 7) reaches the set pressure.

The above-mentioned automatic shut-off valve 6 has a very small amount of purified water discharge due to the use of the reverse osmosis membrane filter 3 (for example, the ratio of purified water and concentrated water is 1: 4). After storage, it is used to discharge a predetermined amount of purified water from the purified water storage tank 7 if necessary.

As shown in Figure 2, another embodiment of the water purification apparatus including a reverse osmosis membrane filter according to the prior art, using a large capacity reverse osmosis membrane filter to use the purified water directly without a separate storage tank (mainly used for restaurants, commercial), A sediment filter (1) for filtering foreign matter contained in raw water flowing in from a faucet through a hose with a nonwoven fabric,

A precarbon filter 2 for filtering chlorine components and the like remaining in water by adsorption of activated carbon;

A reverse osmosis membrane filter (3) for filtering various contaminants, heavy metals, etc. in the water through fine pores by the polyamide composite membrane, and separating the filtered concentrated water from the purified water and discharging it;

It includes a post carbon filter (4) for filtering the smell of water and the like to improve the taste of water.

Since the above-described purified water storage tank 7 is not used separately, when the purified water outlet (faucet) 9 is operated, the purified water treated by the reverse osmosis membrane filter 3 is directly supplied to the user, and the user cleansed water. In the case of temporarily blocking (9), the automatic shutoff valve 6 can automatically block the inflow of raw water to the purified water filter side.

At this time, when the user blocks the purified water discharge port 9, the inflow of raw water into the reverse osmosis membrane filter is stopped by the autoset off valve 6, and the flow of the fluid is temporarily stopped inside the reverse osmosis membrane filter 3. In other words, purified water remains inside the centrifugal pipe 10 and reverse osmosis membrane of the reverse osmosis membrane filter 3, and raw water and concentrated water remain on the outside of the reverse osmosis membrane and inside the filter housing.

For this reason, TDS (total dissolved) contained in raw water or wastewater (condensed water) with respect to the purified purified water stagnated inside the centrifugal pipe 10 of the reverse osmosis membrane filter 3 is obtained. The trigger can be transported and mixed to achieve concentration equilibrium (called "reverse osmosis membrane creep"). This reverse osmosis membrane creep phenomenon is more pronounced when the TDS value of raw water is high, when the reverse osmosis membrane filter capacity (GPD) is large, or when the water purification system has a long downtime.

As a result, the TDS-inducing substance contained in the purified purified water passing through the reverse osmosis membrane filter 3 is temporarily increased in the early stage of restarting after the purified water system is shut down and the user's reliability of the purified water system is increased. There is a problem falling.

In general, the reverse osmosis membrane filter has a TDS removal rate of more than 90%. That is, if the raw water flowing into the water filter is assumed to be 100 ppm of TDS, the purified water is 3 to 5 ppm, and the wastewater to be filtered has 120 to 130 ppm.

According to an embodiment of the present invention, when the water purification system including the reverse osmosis membrane filter is applied and then reused after a certain period of time, the purified water inside the reverse osmosis membrane filter is contaminated due to ion exchange with raw water or concentrated water. It is associated with a water purification device that includes an auxiliary reverse osmosis membrane filter that can be minimized.

An embodiment of the present invention relates to a water purifying apparatus including an auxiliary reverse osmosis membrane filter that has a reliability from a user by minimizing concentration values of pollutants included in initial discharged water when reused after stopping a faucet or the like for a predetermined time. do.

In one embodiment, a water purification device including an auxiliary reverse osmosis membrane filter includes: at least one pretreatment filter into which raw water is introduced;

A reverse osmosis membrane filter which filters foreign substances contained in raw water introduced from the pretreatment filter and separates them into purified water and concentrated water and discharges them;

An auxiliary reverse osmosis membrane filter installed in the branch pipe branched from the pipeline between the pretreatment filter and the reverse osmosis membrane filter;

Installed in the pipelines and branch pipes, respectively, and includes first and second valves for opening and closing the pipe and branch pipes when a signal is applied from the outside,

When the user shuts off the purified water discharge port due to lever operation, the flow of the purified water is stopped. The branch line to the auxiliary reverse osmosis membrane filter is opened by the second valve, and purified water purified by the auxiliary reverse osmosis membrane filter is supplied to the inside of the reverse osmosis membrane filter housing for a set time.

According to another embodiment of the present invention, a water purification device including an auxiliary reverse osmosis membrane filter includes: at least one pretreatment filter into which raw water is introduced;

A reverse osmosis membrane filter which filters foreign substances contained in raw water introduced from the pretreatment filter and separates them into purified water and concentrated water and discharges them;

An auxiliary reverse osmosis membrane filter installed in the branch pipe branched from the pipeline between the pretreatment filter and the reverse osmosis membrane filter;

It includes a valve for opening the branch pipe in accordance with the lever operation for opening and closing the purified water outlet connected to the outlet side of the reverse osmosis membrane filter,

When the user shuts off the purified water outlet by operating a lever, the automatic shutoff valve blocks the inflow of raw water into the reverse osmosis membrane filter, and at the same time, the branch pipe is opened by the valve to purify the purified water purified by the auxiliary reverse osmosis membrane filter. Supply for the set time inside the filter housing.

According to a preferred embodiment, as the first and second valves described above, solenoid valves which are opened and closed in response to the application of an electrical signal from the outside may be used.

It may further include a check valve installed between the auxiliary reverse osmosis membrane filter and the conduit, and allows the flow of purified water from the auxiliary reverse osmosis membrane filter to the conduit.

The apparatus may further include a pressure detection sensor installed in a conduit between the above-mentioned reverse osmosis membrane filter and the purified water outlet, and detecting whether the purified water outlet is open or closed and outputting a detection signal as a control signal to the first and second valves.

The above-described valve may be installed inside or outside the purified water outlet.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the present invention. It does not mean that the technical spirit and scope of the invention are limited.

As shown in FIG. 3, the water purification device including the auxiliary reverse osmosis membrane filter according to an embodiment of the present invention includes sand included in raw water (tap water, ground water), and the like introduced through a hose connected to a faucet (not shown). A sediment filter 1 (referred to as a "pretreatment filter") for removing suspended solids by means of a nonwoven fabric,

A pre-carbon filter 2 (referred to as a "pretreatment filter") for removing chlorine, organic chemicals, etc. remaining in water by adsorption of activated carbon;

A reverse osmosis filter (membrane filter, reverse osmosis filter) that filters foreign substances contained in raw water flowing from a pretreatment filter (referred to as a sediment filter (1) or a precarbon filter (2)), and separates them into purified and concentrated water. 3) with,

An auxiliary reverse osmosis membrane filter 13 installed in the branch line 12 branched from the conduit 11 between the pretreatment filter (for example, the precarbon filter 2) and the reverse osmosis membrane filter 3,

Installed in each of the conduit 11 and the branch conduit 12, and includes first and second valves (14, 15) for opening and closing the conduit 11 and the branch conduit 12 when a signal is applied from the outside,

When the user blocks the water purification outlet 9 due to a lever (not shown) operation, the pipeline 11 is blocked by the first valve 14 which closes in accordance with the application of a signal from the outside, and the signal is applied from the outside. The branch line 12 is opened by the second valve 15 which is opened accordingly, and the purified water purified by the auxiliary reverse osmosis membrane filter 13 is set in the reverse osmosis membrane filter housing 3a for a time (for example, 30 minutes). To 1 hour).

At this time, it may further include a post-carbon filter (4) for supplying water to the purified water outlet 9 by treating the odor in the purified water supplied from the reverse osmosis membrane filter (3).

As the first and second valves 14 and 15 described above, solenoid valves that are opened and closed according to the application of an electrical signal from the outside may be used.

It may further include a check valve 16 installed between the auxiliary reverse osmosis membrane filter 13 and the conduit 11 to allow the flow of purified water from the auxiliary reverse osmosis membrane filter 13 to the conduit 11.

It is provided in the conduit 17 between the above-described post carbon filter 4 and the purified water outlet 9, and detects the opening / closing of the purified water outlet 9 to control the detection signal to the first and second valves 14 and 15. It may further include a pressure detection sensor 18 for outputting as a signal.

In the figure, reference numeral 3b is a reverse osmosis membrane, 3c is an inner membrane through which a low concentration of purified water flows, 3d is an outer membrane through which a high concentration of raw and concentrated water flows, and 3f is a passage through which purified purified water flows. The protective film is wrapped around the reverse osmosis membrane (3b), 3h is a passage through which raw water flows, 16a is a check valve, 19 is a detection signal from the pressure detection sensor 18, the first and second valves (14, 15) Is a control unit pcb outputted as a control signal.

At this time, the configuration including the above-described sediment filter (1), pre-carbon filter (2), reverse osmosis membrane filter (3), post carbon filter (4) and the water purification outlet (9), the conventional shown in Figs. Since they are applied substantially the same as the description, the detailed description thereof will be omitted and the same reference numerals will be used.

Hereinafter, with reference to the accompanying drawings an example of the use of the water purification device including the auxiliary reverse osmosis membrane filter according to an embodiment of the present invention will be described in detail.

As shown in FIG. 3, raw water supplied from a raw water supply source (refer to water supply, groundwater, etc.) through a hose or the like may be a sediment filter (1), a precarbon filter (2), a reverse osmosis membrane filter (3), and a postcarbon filter. By passing through (4) sequentially, various foreign substances contained in raw water are filtered. The purified water treated by the reverse osmosis membrane filter 3 is supplied to the purified water discharge port 9 via the post carbon filter 4.

On the other hand, the concentrated water (referred to as wastewater) filtered by the reverse osmosis membrane filter 3 is discharged to a designated place via the concentrated water control valve 5. At this time, the first valve 14 installed in the conduit 11 maintains an open state, and the second valve 15 installed in the branch conduit 12 branched from the conduit 11 is blocked.

When the user operates the lever (not shown) to shut off the purified water outlet 9, the first valve 14 is closed by the pressure detection sensor 18 and the controller 19, so that the reverse osmosis membrane filter ( The flow of fluid introduced into 3) is temporarily stopped. In other words, purified water remains in the central pipe 10 of the reverse osmosis membrane filter 3 and inside the reverse osmosis membrane 3c, and raw water and concentrated water remain inside the reverse osmosis membrane outer 3d and the housing.

As a result, the TDS-inducing substance contained in the raw water or the wastewater (concentrated water) is in equilibrium with respect to the purified purified water stagnant in the aforementioned centrifugal pipe 10. Can be transported and mixed (reverse osmosis membrane creep).

The electrical detection signal detected by the pressure detection sensor 18 provided in the conduit 17 between the above-described post carbon filter 4 and the purified water outlet 9 is input to the controller 19. The control unit 19 compares the detection signal from the pressure detection sensor 18 with the pre-input pressure value and transmits a control signal to the first and second valves 14 and 15 when it is determined that the water purification outlet 9 is closed. Output

That is, the conduit 11 is blocked by the electrical signal input to the first valve 14, and the branch conduit 12 is opened by the electrical signal input to the second valve 15. For this reason, the raw water which passes through the precarbon filter 2 and the 2nd valve 15 one by one is purified by the auxiliary reverse osmosis membrane filter 13. The raw water purified by the auxiliary reverse osmosis membrane filter 13 is supplied into the reverse osmosis membrane filter 3, and the concentrated water filtered by the auxiliary reverse osmosis membrane filter 13 is discharged to a designated place via the concentrated water control valve 5. do.

Therefore, the purified water purified from the auxiliary reverse osmosis membrane filter 13 is supplied to the inside of the reverse osmosis membrane filter housing 3a and the outer membrane 3d, and the remaining raw water and the concentrated water are discharged through the concentrated water control valve 5. As the purified water is filled in this portion, it is possible to prevent the reverse osmosis membrane creep by maintaining a low concentration of TDS both inside and outside the membrane.

For this reason, when the water purification outlet 9 is blocked for a predetermined time and then reopened for use, contamination of the purified water discharged initially through the water purification outlet 9 can be minimized.

In this case, the time for supplying purified water to the reverse osmosis membrane filter 3 after the raw water is purified by the auxiliary reverse osmosis membrane filter 13 may be variably adjusted according to the capacity of the reverse osmosis membrane filter 3.

As shown in Figure 4, the water purification device including an auxiliary reverse osmosis membrane filter according to another embodiment of the present invention, a sediment filter for removing the suspended solids contained in the raw water flowing through the hose connected to the faucet, etc. ( sediment filter) (1) (called "pretreatment filter"),

A pre-carbon filter 2 (referred to as a "pretreatment filter") for removing chlorine components and the like remaining in water by adsorption of activated carbon;

Reverse osmosis filter (membrane filter, reverse osmosis filter) that filters foreign substances contained in raw water flowing from the pretreatment filter (referred to as sediment filter (1) or precarbon filter (2)) to separate the purified water and the concentrated water and discharge them. 3) with,

An auxiliary reverse osmosis membrane filter 13 installed in the branch line 12 branched from the conduit 11 between the pretreatment filter (referred to as a pre-carbon filter 2) and the reverse osmosis membrane filter 3,

And a valve 20 interlocked with each other in accordance with a lever (not shown) operation for opening and closing the purified water outlet 9 connected to the outlet side of the reverse osmosis membrane filter 3,

When the user operates the lever to shut off the purified water outlet 9, the inflow of raw water into the reverse osmosis membrane filter 3 is blocked by the auto shutoff valve 6, and the branch pipe 12 is opened by the valve 20. The purified water which is opened and purified by the auxiliary reverse osmosis membrane filter 13 is supplied for a predetermined time inside the reverse osmosis membrane filter housing 3a.

At this time, it may include a post-carbon filter (4) for supplying the odor in the purified water supplied from the reverse osmosis membrane filter 3 to the purified water outlet 9 side.

It may further include a check valve 16 installed between the auxiliary reverse osmosis membrane filter 13 and the conduit 11 to allow the flow of purified water from the auxiliary reverse osmosis membrane filter 13 to the conduit 11.

The above-described valve 20 may be installed inside or outside the purified water outlet 9.

In the figure, reference numeral 6 denotes an auto shutoff valve that automatically shuts off the inflow of raw water to the purified water filter side when the purified water outlet 9 is blocked, and 16a is a check valve.

At this time, the configuration except for the valve 20 for opening the branch pipe 12 during the lever operation of the water purification outlet 9 by the user, posted on the water purification device including an auxiliary reverse osmosis membrane filter according to an embodiment of the present invention Since they are applied substantially the same as the above, detailed description thereof will be omitted and duplicate reference numerals will be denoted the same.

Hereinafter, with reference to the accompanying drawings an example of the use of the water purification device including the auxiliary reverse osmosis membrane filter according to another embodiment of the present invention will be described in detail.

As shown in FIG. 4, when the user temporarily shuts off the purified water outlet 9 by the valve 20 interlocked when the user operates the lever (not shown), the fluid introduced into the reverse osmosis membrane filter 3 is turned off. The flow of is temporarily stopped.

As a result, the TDS-inducing substance contained in the raw water or the wastewater (concentrated water) is in equilibrium with respect to the purified purified water stagnant in the aforementioned centrifugal pipe 10. Can be transported and mixed (reverse osmosis membrane creep).

As the branch line 12 is opened by the above-described valve 20 (the line 11 is automatically shut off by the auto shutoff valve 6 interlocked when the purified water outlet 9 is closed), free The raw water passing through the carbon filter 2 and the valve 20 is supplied to the auxiliary reverse osmosis membrane filter 13 to be purified. That is, the purified water treated by the auxiliary reverse osmosis membrane filter 13 is supplied into the reverse osmosis membrane filter 3, and the concentrated water filtered by the auxiliary reverse osmosis membrane filter 13 passes through the concentrated water control valve 5 to a designated place. Discharged.

Therefore, the purified water purified from the auxiliary reverse osmosis membrane filter 13 is supplied to the inside of the reverse osmosis membrane filter housing 3a and the outer membrane 3d, and the remaining raw water and the concentrated water are discharged through the concentrated water control valve 5. As the purified water is filled in this portion, it is possible to prevent the reverse osmosis membrane creep by maintaining a low concentration of TDS both inside and outside the membrane.

For this reason, when the water purification outlet 9 is blocked for a predetermined time and then reopened for use, contamination of the purified water discharged initially through the water purification outlet 9 can be minimized.

As described above, the water purification device including the auxiliary reverse osmosis membrane filter according to the embodiment of the present invention has the following advantages.

In the water purification system including the reverse osmosis membrane filter, the purified water supplied from the auxiliary reverse osmosis membrane filter is used to dilute the pollutant contained in the raw water and the concentrated water in the main reverse osmosis membrane filter so that the purified water remains in the main reverse osmosis membrane filter. Membrane creep that can occur when not in use can be prevented and the reliability of the water purification system can be improved.

Claims (5)

At least one pretreatment filter into which raw water is introduced; A reverse osmosis membrane filter which filters foreign substances contained in raw water introduced from the pretreatment filter and separates them into purified water and concentrated water and discharges them; An auxiliary reverse osmosis membrane filter installed in a branch pipe branched from the pipeline between the pretreatment filter and the reverse osmosis membrane filter; And It is provided in each of the pipelines and branch pipes, each of the first and second valves for opening and closing the pipe and branch pipes when a signal is applied, When the user shuts off the purified water discharge port due to lever operation, the flow of the purified water is stopped. A purified water comprising the auxiliary reverse osmosis membrane filter by opening a branch line to the auxiliary reverse osmosis membrane filter by a second valve and supplying purified water purified by the auxiliary reverse osmosis membrane filter for a predetermined time inside the reverse osmosis membrane filter housing. Device. At least one pretreatment filter into which raw water is introduced; A reverse osmosis membrane filter which filters foreign substances contained in raw water introduced from the pretreatment filter and separates them into purified water and concentrated water and discharges them; An auxiliary reverse osmosis membrane filter installed in a branch line branched from the pipeline between the pretreatment filter and the reverse osmosis membrane filter; And And a valve for opening the branch line and blocking the line according to a lever operation of opening and closing the purified water outlet connected to the outlet side of the reverse osmosis membrane filter. When the user operates the lever to shut off the purified water discharge port, the raw water is introduced into the reverse osmosis membrane filter by an auto shutoff valve, and the branch pipe is opened by the valve to purify the purified water by the auxiliary reverse osmosis membrane filter. Water purification device comprising an auxiliary reverse osmosis membrane filter, characterized in that for supplying for a set time inside the reverse osmosis membrane filter housing. The water purifying apparatus according to claim 1, wherein a solenoid valve that is opened and closed according to the application of an electrical signal from the outside is used as the first and second valves. The pressure detection sensor of claim 1, further comprising a pressure detection sensor installed in a conduit between the reverse osmosis membrane filter and the water purification outlet, and detecting whether the water purification outlet is open or closed and outputting a detection signal as a control signal to the first and second valves. Water purification device comprising an auxiliary reverse osmosis membrane filter. The water purifying apparatus according to claim 2, wherein the valve is installed inside or outside of the water purification outlet.

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