KR102388904B1 - Water treating apparatus - Google Patents

Abstract

Disclosed is a water treatment device capable of extracting purified water by the pressure of raw water.
The disclosed water treatment device includes a filtration unit for filtering raw water; a storage unit configured to store purified water filtered through at least a portion of the filter unit, and having a first chamber and a second chamber whose volume changes according to a change in the volume of the first chamber; an extraction unit installed to provide filtered purified water to a user; and an air supply unit installed in a flow path connected to the storage unit to supply air to any one of the first chamber and the second chamber of the storage unit.

Description

Water treatment equipment {WATER TREATING APPARATUS}

The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus capable of extracting purified water by the pressure of raw water.

A water treatment device is a device that supplies drinking water to a user by discharging it to the outside after treating the inflow water.

As such a water treatment device, there is a water purifier that includes one or more water filters and supplies the water to the user after filtering the introduced water. In addition to the above-mentioned water purifier, there are carbonated water machines that supply carbon dioxide to the inflow water and then supply it to the user, or ionized water machines that electrolyze the inflow water to make alkaline and acidic water and supply it to the user.

Such a water treatment device may include a water tank into which filtered purified water is introduced and stored.

Since purified water is stored at atmospheric pressure in such a water tank, an extraction location of purified water is limited.

For example, only when an extraction part, such as a cock or a faucet, which is connected to the water tank and discharges purified water stored in the water tank to the outside is located lower than the low water level of the water tank, the purified water stored in the water tank can be discharged to the outside through the extraction unit. There is a problem.

The present invention has been devised to solve at least some of the problems of the prior art as described above, and an object of the present invention is to provide a water treatment apparatus capable of extracting purified water by the pressure of raw water.

In addition, an object of the present invention is to provide a water treatment device in which the location of the extraction unit is not limited as an aspect.

And, as an aspect, an object of the present invention is to provide a water treatment apparatus in which a flow path is switched during a water purification process and purified water extraction by the pressure of raw water.

In addition, an object of the present invention is to provide a water treatment device capable of automatically blocking the inflow of raw water as an aspect.

And, as an aspect of the present invention, an object of the present invention is to provide a water treatment device capable of flushing the reverse osmosis filter.

Another object of the present invention is to provide a water treatment apparatus capable of minimizing the chattering phenomenon of a flow path switching valve as an aspect.

And, as an aspect, an object of the present invention is to provide a water treatment device capable of easily discharging water from a storage unit.

In addition, an object of the present invention is to provide a water treatment apparatus capable of checking a leak in a storage unit or a flow path or checking whether a component installed in the flow path is abnormal as an aspect.

As an aspect for achieving the above object, the present invention, a filtration unit for filtering raw water; a storage unit configured to store purified water filtered through at least a portion of the filter unit, and having a first chamber and a second chamber whose volume changes according to a change in the volume of the first chamber; an extraction unit installed to provide filtered purified water to a user; and an air supply unit installed in a flow path connected to the storage unit to supply air to any one of the first chamber and the second chamber of the storage unit.

In this case, the air supply unit may be connected to a water purification line for supplying purified water filtered through at least a portion of the filtering unit to the storage unit.

In addition, the water treatment apparatus according to an aspect of the present invention includes a purified water supply line through which the purified water supplied from the purified water line is supplied to the storage unit, and an extraction line through which the purified water supplied from the purified water line is supplied to the extraction unit, The air supply unit may be installed in a flow path through which the purified water line is connected to the extraction line and a purified water branching unit that branches into the purified water supply line.

In addition, the purified water line may include a first check valve installed at the front end of the purified water branch to prevent backflow of purified water from the purified water branch to the filtering unit, and between the purified water branch and the extracting unit A second check valve for preventing the reverse flow of purified water toward the purified water branch may be installed.

In addition, an additional filter may be provided between the second check valve and the extraction line to further filter the purified water passing through the second check valve. In addition, the additional filter may be installed in the purified water discharge line connecting the purified water branch and the extraction line. Alternatively, an additional filter may be provided between the first check valve and the purified water branch to further filter the purified water that has passed through the first check valve.

On the other hand, the water treatment device according to an aspect of the present invention, when the pressure of the extraction line becomes greater than or equal to a set pressure, an automatic shut-off valve for allowing raw water to flow into the filtration unit. It can be connected through a valve and a pressure transmission line.

In addition, the air supply unit may be provided as a port installed in a flow path connected to the storage unit.

In addition, the air supply unit may have a valve structure that blocks the flow path when air is not supplied and opens the flow path when air is supplied.

The air supply unit is provided in a flow path connected to the first chamber, and increases the volume of the first chamber by supplying air to the first chamber and decreases the volume of the second chamber in the second chamber. It may be configured to drain the contained water. In this case, the second chamber may be connected to a drain line.

In addition, in the water treatment apparatus according to an aspect of the present invention, the flow path conversion for converting the flow path so that raw water or water supplied from the filter unit is supplied to the second chamber or the water accommodated in the second chamber is discharged to the drain line. It may further include a valve;

In addition, the storage unit includes a housing having an inner space formed therein to store the purified water filtered by the filtering unit, dividing the inner space of the housing into the first chamber and the second chamber, and the volume of the first chamber and the second chamber It may be provided with a partition member that is deformed according to the change.

In this case, the partition member may have a balloon shape having an outlet on one side.

In addition, purified water filtered through at least a portion of the filtering unit may be introduced into the first chamber, and water having a lower filtration degree than that of the first chamber may be introduced into the second chamber.

According to an embodiment of the present invention having such a configuration, it is possible to obtain the effect that purified water can be extracted by the pressure of the raw water.

In addition, according to an embodiment of the present invention, since extraction is performed by raw water pressure, it is possible to obtain the effect that there is no restriction on the location of the extraction part.

And, according to an embodiment of the present invention, since the flow path is automatically switched during the purification process and purified water extraction by the pressure of the raw water, it is possible to obtain the effect that the power supply for the flow path switching is not required.

In addition, according to an embodiment of the present invention, it is possible to obtain the effect of automatically blocking the inflow of raw water according to the pressure of the flow path.

And, according to an embodiment of the present invention, it is possible to flush the reverse osmosis filter by discharging a large amount of water that has not passed through the reverse osmosis filter, thereby increasing the life of the reverse osmosis filter.

In addition, according to an embodiment of the present invention, it is possible to obtain the effect that the chattering phenomenon of the flow path switching valve can be minimized by installing the pressure reducing valve.

And, according to an embodiment of the present invention, it is possible to obtain the effect that the water of the storage unit can be easily discharged through the air supply unit.

In addition, according to an embodiment of the present invention, it is possible to obtain the effect of checking the leakage of the storage unit or the flow passage through the air supply unit or checking whether the parts installed in the flow passage are abnormal.

1 is a water pipe diagram of a water treatment apparatus according to an embodiment of the present invention.
FIG. 2 is a water pipe diagram illustrating a flow path when the purified water is stored in the water treatment apparatus shown in FIG. 1; FIG.
3 is a water pipe diagram illustrating a flow path during extraction of purified water of the water treatment apparatus shown in FIG. 1 .
Figure 4 is a water pipe diagram showing a modified example of the water treatment apparatus shown in Figure 1;
5 is a water pipe diagram of a water treatment device according to another embodiment of the present invention;
6 is a water pipe diagram showing a modified example of the water treatment device shown in FIG.
7 is a water pipe diagram of a water treatment device according to another embodiment of the present invention.
8 is a water pipe diagram showing a modified example of the water treatment device shown in FIG.
9 is a water pipe view of a water treatment device according to another embodiment of the present invention.
10 is a water pipe diagram illustrating a flow path when the purified water is stored in the water treatment apparatus shown in FIG. 9;
11 is a water pipe diagram illustrating a flow path during extraction of purified water of the water treatment apparatus shown in FIG. 9;
12 is a water pipe diagram showing a modified example of the water treatment device shown in FIG.
13 is a water pipe diagram of a water treatment device according to another embodiment of the present invention.
14 is a water pipe diagram illustrating a flow path when the purified water is stored in the water treatment device shown in FIG. 13;
15 is a water pipe diagram illustrating a flow path during extraction of purified water of the water treatment apparatus shown in FIG. 13;
16 is a cross-sectional view illustrating an example of a flow path switching valve provided in a water treatment apparatus according to an embodiment of the present invention.
17 is a cross-sectional view showing a modified example of the flow path switching valve shown in FIG.
18 is a cross-sectional view showing another modified example of the flow path switching valve shown in FIG.
19 is a cross-sectional view illustrating a flow path state when the purified water is stored in the flow path switching valve shown in FIG. 16;
20 is a cross-sectional view illustrating a flow path state when purified water is extracted by the flow path switching valve shown in FIG. 16;
21 is a perspective view illustrating an example of an automatic shut-off valve provided in a water treatment apparatus according to an embodiment of the present invention.
22 is a cross-sectional view of the automatic shut-off valve shown in FIG.
23 is a cross-sectional view showing a state when there is a flow in the first flow path portion of the automatic shutoff valve shown in FIG. 22;
24 is a cross-sectional view illustrating a state in which the flow is blocked in the first flow path part of the automatic shutoff valve shown in FIG. 22;
25 is a perspective view illustrating an example of a pressure reducing valve provided in a water treatment apparatus according to an embodiment of the present invention.
26 is a cross-sectional view of the pressure reducing valve shown in FIG.
27 is a cross-sectional view illustrating a flow state of the pressure reducing valve shown in FIG. 26;
28 is a cross-sectional view showing a state in which the flow is reduced compared to the case of FIG. 27;
29 is a cross-sectional view illustrating a state in which the flow of the pressure reducing valve shown in FIG. 26 is blocked.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiment of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. In addition, the embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art. The shapes and sizes of elements in the drawings may be exaggerated for clearer description.

In addition, in the present specification, the singular expression includes a plural expression unless the context clearly dictates otherwise, and the same reference signs refer to the same or corresponding elements throughout the specification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 15, the water treatment device 100 according to an aspect of the present invention is configured to include a filtering unit 200, a storage unit 300, and an extraction unit 700, and optionally a flow path The switching valve 400 , the pressure reducing valve 600 , the automatic shutoff valve 500 , may be configured to include at least a portion of the air supply unit AP.

[Fig. 1 to degree of 4 Example ]

First, a water treatment apparatus 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4 .

1 is a water pipe diagram of a water treatment device according to an embodiment of the present invention, FIG. 2 is a water pipe diagram showing a flow path during storage of purified water of the water treatment device shown in FIG. 1 , and FIG. 3 is the water treatment device shown in FIG. It is a water pipe diagram showing a flow path when purified water is extracted, and FIG. 4 is a water pipe diagram showing a modified example of the water treatment apparatus shown in FIG.

1 to 4 , the water treatment device 100 according to an aspect of the present invention includes a filtration unit 200 for filtering raw water, and purified water filtered through at least a portion of the filtration unit 200 . It is configured to include a storage unit 300 for storing filtered water and an extraction unit 700 installed to provide filtered purified water to a user, and purified water is introduced into the storage unit 300 or purified water from the storage unit 300 . It may be configured to include a flow path switching valve 400 to which the flow path is switched to be discharged.

In addition, as shown in FIGS. 1 to 4 , the water treatment device 100 according to an aspect of the present invention includes a filtering unit 200 for filtering raw water, and at least a portion of the filtering unit 200 to filter it. A storage unit 300 for storing purified purified water, an extraction unit 700 installed to provide filtered purified water to a user, and a flow path switching valve 400 that switches a flow path according to the inflow and outflow of purified water from the storage unit 300 . And, it may be configured to include a pressure reducing valve 600 for reducing the fluctuating pressure generated when the flow path switching of the flow path switching valve (400).

And, as shown in FIGS. 1 to 4 , the water treatment device 100 according to an aspect of the present invention includes a filtering unit 200 for filtering raw water, and storing purified water filtered by the filtering unit 200 . The storage unit 300, the extraction unit 700 from which purified water stored in the storage unit 300 is extracted, and the pressure inside the storage unit 300 or the pressure of a specific flow path provided in the water treatment device 100 are When the pressure is higher than the set pressure, it may be configured to include an automatic shutoff valve 500 that blocks the inflow of raw water.

In addition, as shown in FIG. 4 , the water treatment device 100 according to an aspect of the present invention includes a filtering unit 200 for filtering raw water, and purified water filtered through at least a part of the filtering unit 200 . A storage unit 300 for storing, an extraction unit 700 installed to provide filtered purified water to a user, and air installed in a flow path connected to the storage unit 300 to supply air to the storage unit 300 . It may be configured to include a supply unit (AP).

Hereinafter, the filtration unit 200, the storage unit 300, the extraction unit 700, the flow path switching valve 400, the pressure reducing valve 600, and automatic shutoff provided in the water treatment device 100 according to an aspect of the present invention A configuration of the valve 500 and the air supply unit AP will be described.

[Filtration unit (200)]

The filtering unit 200 may include one or more filters to filter the raw water obtained through the raw water line (LRW).

For example, as shown in FIGS. 1 to 4 , the filtering unit 200 includes a first filter 210 , a second filter 220 , a third filter 250 , and an additional filter 260 . ) may be included.

In this case, the first filter 210 is a sediment filter, the second filter 220 is a pre-carbon filter, the third filter 250 is a reverse osmosis filter, and the additional filter 260 is a post-carbon filter. can

The sediment filter receives raw water from the raw water line (LRW) and serves to adsorb and remove relatively large particulate suspended solids and solid substances such as sand contained in the raw water. In addition, the free carbon filter receives water that has passed through the sediment filter, and through the adsorption method of activated carbon, chemical substances harmful to the human body, such as volatile organic compounds, carcinogens, synthetic detergents, pesticides, and residual chlorine (e.g. For example, HOCl or ClO) will function to remove the component.

In addition, the reverse osmosis filter receives the water filtered from the free carbon filter and removes heavy metals and other metal ions and fine organic/inorganic substances such as bacteria from the water through a membrane having fine pores. In the reverse osmosis filter, a drain line (LD) for discharging domestic water generated during filtration of raw water, that is, waste water (commonly referred to as "concentrated water" in the industry because total dissolved solids (TDS) is high in domestic water) is connected, and a drain valve VR is installed in the drain line LD as a flow resistance means to control the discharge amount of domestic water. The drain valve VR forms a narrower flow path than the purified water line LPW through which filtered purified water is discharged in order to limit the discharge of domestic water.

In addition, the post carbon filter is a carbon filter using an activated carbon adsorption method using coal, wood or coconut fruit as a raw material, and functions to adsorb and remove unpleasant taste, odor, and color of water filtered through a reverse osmosis filter.

However, the type, number, and order of the filters provided in the filtration unit 200 may be changed according to the filtration method of the water treatment device or the filtration performance required for the water treatment device. It is not limited to the structure of the filtering unit 200 . For example, a hollow fiber membrane filter may be provided as the third filter 250 instead of the reverse osmosis filter. Such a hollow fiber membrane filter is a porous filter having pores of several tens to hundreds of nanometers (nm) in size, and it removes contaminants in water through countless micropores distributed on the membrane surface.

However, in the case of the embodiment shown in Figs. 1 to 4, as will be described later, since domestic water is supplied to the second chamber 320 of the storage unit 300, the third filter 250 uses a reverse osmosis filter. it is preferable However, as in the case of the embodiment shown in FIGS. 9 to 12, when raw water or purified water filtered through at least a part of the filter in the storage unit 300 is supplied to the second chamber 320, the third filter ( 250) is not limited to the reverse osmosis filter, it is also possible to use a hollow fiber membrane filter. Hereinafter, the third filter 250 will be referred to as a reverse osmosis filter 250 .

In addition, the plurality of filters included in the filtration unit 200 is not particularly limited to being formed in the form of an independent cartridge, and may be configured as a composite filter having the function of two or more filters. For example, as in the case of the embodiment shown in FIGS. 5 to 15 , the sediment filter and the pre-carbon filter may be configured as a single pre-treatment composite filter 210 ′.

1 to 4, the raw water introduced through the raw water line LRW is filtered through the first filter 210, and through the raw water pressure reducing valve REG installed in the connection line LC, the second filter ( 220) is introduced. When the raw water supply pressure from the raw water line LRW is higher than a predetermined pressure, the raw water pressure reducing valve REG reduces the pressure of raw water and supplies it to the filtering unit 200 . As shown in FIGS. 1 to 4 , the raw water pressure reducing valve REG may be provided between the first filter 210 and the second filter 220 , but the position is not limited thereto, and the first It is also possible to be provided at the front end of the filter 210 .

Meanwhile, purified water filtered through the second filter 220 is supplied to the reverse osmosis filter 250 through the connection line LC. The reverse osmosis filter 250 is connected to a water purification line (LPW) through which filtered purified water is discharged, and a drain lara (DL) for discharging domestic water generated during filtration of raw water. Also, a chamber water line LLW for supplying household water to the second chamber 320 of the storage unit 300 may be connected to the reverse osmosis filter 250 . This chamber water line LLW lives in the second chamber 320 from the reverse osmosis filter 250 when the purified water stored in the first chamber 310 of the storage unit 300 is extracted through the extraction unit 700 . water will be supplied. In addition, a drain valve VR is installed in the drain line LD to control the discharge of domestic water, and this drain valve VR is a purified water line through which filtered purified water is discharged to limit the discharge of domestic water LPW) to form a narrower flow path.

On the other hand, the purified water filtered by the reverse osmosis filter 250 is supplied to the storage unit 300 through the purified water line (LPW) and the purified water supply line (LPW1), or the purified water line (LPW), the purified water discharge line (LPW2, LPW3) ), may be provided to the extraction unit 700 through the extraction line LE and provided to the user, and for this purpose, the purified water line LPW is connected to the extraction line LE. , LPW3)} and a purified water branch TC2 may be formed at a branching point to the purified water supply line LPW1.

That is, purified water filtered by the reverse osmosis filter 250 is supplied to the storage unit 300 or extracted through the extraction unit 700 according to the flow path switching of the flow path switching valve 400 to be described later, and for this purpose, the purified water line LPW is branched from the purified water branch TC2 to the purified water supply line LPW1 and the purified water discharge line LPW2.

In addition, a first check valve CV1 may be installed in the flow path between the reverse osmosis filter 250 and the storage unit 300 . That is, a first check valve CV1 is installed in the purified water line LPW in front of the purified water branch TC2, and the purified water is purified from the purified water branch TC2 toward the reverse osmosis filter 250 of the filtering unit 200. to prevent backflow.

In addition, a second check valve CV2 may be installed in the flow path between the storage unit 300 and the extraction unit 700 . That is, a second check valve CV2 is installed in the purified water discharge line LPW2 between the purified water branch TC2 and the extractor 700 to prevent reverse flow of purified water toward the purified water branch TC2. will do

Through the configuration of the second check valve CV2, the pressure of the extraction line LE can be constantly maintained after the extraction of purified water by the extraction unit 700 is finished.

In addition, in the purified water discharge lines LPW2 and LPW3 connecting the purified water branch TC2 and the extraction line LE, an additional filter 260 for further filtering the purified water filtered by the reverse osmosis filter 250 is provided. can be provided. The additional filter 260 may be formed of a post carbon filter as described above, but is not limited thereto.

This additional filter 260 is installed between the second check valve (CV2) and the extraction line (LE) so that the purified water passing through the second check valve (CV2) is additionally filtered before being discharged through the extraction unit (700). is composed

On the other hand, an automatic shutoff valve 500 for blocking the inflow of raw water may be installed in the connection line LC. This automatic shut-off valve 500 will be described later.

[Storage unit 300]

1 to 4, the storage unit 300 includes a housing 330 having an internal space to store purified water filtered through at least some of the filters provided in the filtering unit 200, and , a partition member 340 dividing the inner space of the housing 330 into a first chamber 310 and a second chamber 320 is provided.

In this case, the partition member 340 is formed to be deformed according to the volume change of the first chamber 310 and the second chamber 320 . Accordingly, the volume of the first chamber 310 changes according to the volume change of the second chamber 320 , and the volume of the second chamber 320 changes according to the volume change of the first chamber 310 . will do

The partition member 340 may be formed in a balloon shape with an outlet formed on one side, and the housing 330 is formed to have a predetermined fixed volume to accommodate the partition member 340 therein.

In this way, the inner space of the partition member 340 forms the first chamber 310 , and the space between the partition member 340 and the housing 330 forms the second chamber 320 .

In this case, the partition member 340 may be made of polyolefin elastomer. Polyolefin elastomer has superior elasticity and fatigue failure compared to polyethylene (Poly Ethylene). Accordingly, even if the partition member 340 is repeatedly folded and unfolded by the inflow and outflow of water, damage to the partition member 340 by this is minimized and the durability of the partition member 340 can be improved. However, the material constituting the partition member 340 is not limited thereto, and various materials that are harmless to the human body, such as polyethylene, can be applied.

A purified water supply line LPW1 is connected to the first chamber 310 to store purified water that has passed through at least some of the filters among the filters provided in the filtering unit 200 , and purified water is provided inside the first chamber 310 . As is supplied, the water accommodated in the second chamber 320 is discharged to the outside.

At this time, an inflow and outflow line LEI is connected to the second chamber 320 , and as purified water is supplied to the first chamber 310 , the water accommodated in the second chamber 320 is an inflow and outflow line LEI and a drain connection line. It is discharged to the outside through the drain line LD through the LDS. In this case, the drain connection line LDS and the drain line LD are connected by the drain connection part TC1. In addition, since the drain connection part TC1 is installed at a rear end of the drain valve VR, the water contained in the second chamber 320 can be easily discharged through the drain connection line LDS.

In addition, as water is supplied to the second chamber 320 , the purified water stored in the first chamber 310 is discharged to the extraction unit 700 . Specifically, the purified water accommodated in the first chamber 310 passes through the purified water supply line LPW1, the purified water discharge lines LPW2, LPW3, the extraction line LE, and the extraction connection line LCE to the extraction unit 700. is emitted

In addition, the second chamber 320 may be formed so that the water for household use that has not been filtered by the reverse osmosis filter 250 is supplied. That is, as shown in FIG. 3 , the household water that is not filtered in the reverse osmosis filter 250 passes through the flow path switching valve 400 and the inlet/outlet line LEI through the chamber water line LLW to the second chamber 320 . ) can be supplied.

On the other hand, there is provided a flow path switching valve 400 that switches the flow path so that purified water is introduced into the first chamber 310 of the storage unit 300 or purified water is discharged from the first chamber 310 of the storage unit 300 . may be, which will be described later.

In this way, purified water filtered through the reverse osmosis filter 250 is introduced into the first chamber 310 , and domestic water that has not passed through the reverse osmosis filter 250 may be introduced into the second chamber 320 . . That is, purified water filtered through at least a portion of the filtering unit 200 is introduced into the first chamber 310 , and water having a lower filtration degree than that of the first chamber 310 is introduced into the second chamber 320 . (Household water) is configured to flow in.

[Extraction unit 700]

In addition, the extracting unit 700 passes through the filtering unit 200 and the filtered purified water and/or the purified water stored in the storage unit 300 is discharged. The extraction unit 700 may be formed of a cock or a faucet, and may include a mechanical or electronic extraction valve (not shown). Accordingly, as the user opens the extraction valve, extraction of purified water is performed, and as the user closes the extraction valve, extraction of purified water is terminated.

[Flowway switching valve (400)]

Next, the flow path switching valve 400 will be described with reference to FIGS. 1 to 4 and FIGS. 16 to 20 .

The flow path switching valve 400 switches the flow path so that purified water is introduced into the storage unit 300 or purified water is discharged from the storage unit 300 .

The flow path switching valve 400 has a plurality of ports, and the flow path is switched by the pressure of water supplied from the filter unit 200 . That is, the flow path switching valve 400 has a configuration in which the flow path is switched using the hydraulic pressure of the raw water supplied from the raw water supply line (LRW) without using a separate power source.

In addition, in the flow path switching valve 400 , the flow path is switched according to the pressure of the extraction line LE through which purified water flows to the extraction unit 700 . Specifically, the flow path switching valve 400 extracts from the storage unit 300 when the pressure of the extraction line LE is lower than a set pressure (eg, a value selected from 20 to 40% of the raw water pressure). A configuration in which a flow path for moving purified water is formed in the unit 700 and the flow path is switched to form a flow path for storing purified water in the storage unit 300 when the pressure of the extraction line LE is higher than the set pressure has

That is, the flow path switching valve 400 is accommodated in the second chamber 320 of the storage unit 300 when purified water is supplied to the first chamber 310 of the storage unit 300 as shown in FIG. 2 . A flow path through which water is discharged is formed, and as shown in FIG. 3 , when purified water accommodated in the first chamber 310 of the storage unit 300 is extracted through the extraction unit 700 , it is placed in the second chamber 320 . A flow path through which domestic water flows is formed.

The flow path switching valve 400 is connected to a first port 411 connected to the filtration unit 200 , a second port 412 connected to the drain line LD, and the second chamber 320 . It may be provided with a third port 413 that is, the fourth port 424 and the fifth port 425 may be installed to be connected to the extraction line (LE).

Specifically, the first port 411 is connected to a chamber water line LLW through which domestic water that has not passed through the reverse osmosis filter 250 flows, and the second port 412 is connected to a drain connection line LDS. It is connected to the drain line LD through the third port 413 is connected to the second chamber 320 through the inlet and outlet line LEI, and the fourth port 424 is connected to the extraction line LE. And, the fifth port 425 may be configured to be connected to the extraction connection line (LCE).

At this time, as shown in FIG. 2 , the flow path switching valve 400 is connected to the inflow and outflow line LEI to discharge the water (living water) discharged from the second chamber 320 to the drain line LD. A flow path through which the third port 413 and the second port 412 connected to the drain connection line communicate with each other, and the water (living water) introduced from the filter unit 200 as shown in FIG. 3 is transferred to the second chamber The flow path is configured to be switched between the flow path through which the first port 411 connected to the chamber water line LLW and the third port 413 connected to the inflow/outline line LEI communicate with each other to supply the 320.

That is, as shown in FIG. 2 , when the flow path switching of the flow path switching valve 400 is made so that the third port 413 and the second port 412 communicate with each other, the extraction unit 700 is in a closed state, so the reverse The purified water filtered by the osmotic filter 250 may be stored in the first chamber 310 of the storage unit 300 through the purified water line LPW and the purified water supply line LPW1, and the purified water is stored in the first chamber 310 As is supplied, the water (living water) stored in the second chamber 320 may be drained to the outside through the drain line LD after passing through the inlet/outlet line LEI and the drain branch line LDS.

In addition, as shown in FIG. 3 , when the flow path switching of the flow path switching valve 400 is made so that the first port 411 and the third port 413 communicate with each other, the life that is not filtered by the reverse osmosis filter 250 . Water may flow into the second chamber 320 of the storage unit 300 by flowing the chamber water line LLW and the inlet/outlet line LEI, and as the living water flows into the second chamber 320, the first chamber Since the extraction unit 700 is in an open state, the purified water accommodated in the 310 may be discharged to the extraction unit 700 through the purified water supply line LPW1 and the discharge line LE and supplied to the user.

An example of such a flow path switching valve 400 will be described with reference to FIGS. 16 to 20 .

16 is a cross-sectional view illustrating an example of a flow path switching valve 400 provided in a water treatment apparatus according to an embodiment of the present invention, and FIG. 17 is a modified example of the flow path switching valve 400 shown in FIG. It is a cross-sectional view, and FIG. 18 is a cross-sectional view showing another modified example of the flow path switching valve 400 shown in FIG. 16 , and FIG. 19 shows the flow path state when the purified water is stored in the flow path switching valve 400 shown in FIG. 16 . It is a cross-sectional view, and FIG. 20 is a cross-sectional view showing the flow path state when purified water is extracted by the flow path switching valve 400 shown in FIG. 16 .

As shown in FIG. 16 , the flow path switching valve 400 may include a first body portion 410 and a second body portion 420 .

The first body portion 410 includes a first port 411 connected to the chamber water line LLW through which domestic water that has not passed through the reverse osmosis filter flows, and a second port 412 connected to the drain line LD. ) and a third port 413 connected to the second chamber 320 may be provided.

In addition, a plunger 430 may be movably provided in the first body portion 410 . The plunger 430 allows the inlet/outlet line LEI connected to the third port 413 to communicate with the drain branch line LDS connected to the second port 412 according to the location (see FIG. 19), or the first port It can be made to communicate with the chamber water line (LLW) connected to the 411 (see FIG. 20).

A moving part 414 in which the plunger 430 is movably provided may be formed in the first body part 410 . In addition, the moving unit 414 may be connected to the first port 411 , the second port 412 , and the third port 413 . Accordingly, the moving unit 414 may be respectively connected to the chamber number line LLW, the drain branch line LDS, and the inlet/outlet line LEI.

At this time, depending on the position of the plunger 430, a flow path communicating the third port 413 and the second port 412 is formed (see FIG. 19), or the first port 411 and the third port 413 are connected. In order to form a communicating flow path (see FIG. 20 ), the first port 411 , the second port 412 , and the third port 413 may be formed with a height difference. That is, when the plunger 430 is positioned at the upper side, it closes the first port 411 , and when the plunger 430 is positioned at the lower side, it can be configured to close the second port 412 .

In addition, a pressure transmitting part 415 connected to the second body part 420 may be formed in the first body part 410 .

In addition, the first body portion 410 may be provided with a pressing portion 440 movably. The pressing part 440 may be movably provided in the pressure transmitting part 415 of the first body part 410 .

And, the pressure part 440 is a plunger ( 430) can be moved.

The pressing unit 440 may include a pressing member 441 , a first diaphragm 442 and a second diaphragm 443 as shown in FIGS. 16 and 18 , and is shown in FIG. 17 . As described above, it may be configured to include a pressing member 441 and a first diaphragm 442 .

In this case, the pressing member 441 may be configured to directly or indirectly contact the plunger 430 . That is, as shown in FIG. 17, the pressing member 441 may be configured to directly contact the plunger 430, and as shown in FIGS. 16 and 18, the second diaphragm 443 through the plunger ( 430).

The first diaphragm 442 is connected to the pressing member 441 to receive pressure to receive the pressure of water flowing through the extraction line LE transmitted to the second body 420, and the second diaphragm 443 is connected to the pressing member 441 to contact the plunger 430 .

The configuration of the pressing part 440 is not limited to the embodiment shown in FIGS. 16 to 18 , and is movably provided on the first body part 410 and includes the first body part 410 and the second body part. As long as it is a configuration capable of moving the plunger 430 according to the pressure difference of 420 or the pressure of water flowing through the extraction line LE, any known configuration is possible.

In addition, the second body portion 420 is configured to be connected to the first body portion 410, it may be connected to the extraction line (LE) to receive the pressure of the extraction line (LE).

A connection passage 421 through which the discharge line LE and the connection discharge line LCE are connected may be formed in the second body portion 420 . That is, the discharge line LE is connected to the fourth port 424 that is one side of the connection passage 421 and the connection discharge line LCE is connected to the fifth port 425 that is the other side of the connection passage 421. . However, the configuration of the second body portion 420 is not limited to a configuration having a fourth port 424 and a fifth port 425 as shown in FIGS. 16 to 20, and the extraction line (LE) Various changes are possible if the pressure of For example, one of the fourth port 424 or the fifth port 425 may be closed and the other one may be connected to the extraction line LE and a separate flow path.

In addition, a connection hole 421a connected to the pressure transmitting part 415 of the first body part 410 may be formed in the connection passage 421 . Accordingly, the pressure of the connection passage 421 of the second body portion 420 may be transmitted to the first diaphragm 442 of the pressing portion 440 through the connection hole 421a.

On the other hand, the second body portion 420 is a virtual line connecting the connection passage 421 and the second port 412 and the third port 413 of the first body portion 410 as shown in FIG. 16 . It may be connected to the first body portion 410 so as to be parallel to it, but for the convenience of connection between the discharge line LE and the connection discharge line LCE, it is inclined, for example, at a right angle to the first body portion 410. may be In addition, a virtual line connecting the connection passage 421 of the second body 420 and the second port 412 and the third port 413 of the first body 410 can form a specific angle. , the second body portion 420 and the first body portion 410 may be configured.

For example, the first body portion 410 and the second body portion 420 may be formed in the shape of a cylinder, a cube, or a rectangular parallelepiped.

Meanwhile, as shown in FIG. 18 , the plunger 430 may be configured to be elastically supported by an elastic member 431 . For example, the elastic member 431 may be provided on the upper side of the plunger 430 to elastically support the upper side of the plunger 430 . Accordingly, the elastic force of the elastic member 431 may act on the upper side of the plunger 430 .

Therefore, when the pressure acting on the connection passage 421 formed in the second body portion 420 decreases and the plunger 430 descends (see FIG. 20 ), the plunger is caused by the water flowing into the first port 411 . Even if the pressure acting on the upper side of the 430 is weak, since the elastic force of the elastic member 431 acts together, the plunger 430 can be easily lowered.

In addition, the force applied to the first diaphragm 442 of the pressing part 440 by the pressure acting on the connection passage 421 formed in the second body part 420 is applied to the plunger 430 by the living water. When it becomes greater than the force applied to the upper side, the plunger 430 may be raised (see FIG. 19 ). At this time, as shown in FIG. 18 , in the configuration in which the upper side of the plunger 430 is elastically supported by the elastic member 431 , the force applied to the first diaphragm 442 of the pressing part 440 is Only when the sum of the force applied to the upper side of the plunger 430 by the water and the elastic force applied to the upper side of the plunger 430 by the elastic member 431 is greater than the sum, the plunger 430 can be raised.

Therefore, when not desired, a force is applied to the first diaphragm 442 of the pressing part 440 by the pressure acting on the connection flow path 421 of the second body part 420 so that the plunger 430 does not rise. can prevent it Accordingly, the operation of the plunger 430 can be made more reliable.

In addition, the elastic member 431 may elastically support the upper side of the plunger 430 , but may also elastically support the lower side of the plunger 430 , and the upper side of the plunger 430 through the plurality of elastic members 431 . Both the upper and lower sides may be elastically supported.

The elastic member 431 is not limited to the coil spring shown in FIG. 18 , and any known type such as a plate spring may be used as long as it can elastically support the plunger 430 .

The flow path switching valve 400 having this configuration forms a flow path communicating the third port 413 and the second port 412 as shown in FIG. 19 according to the position of the plunger 430, or in FIG. As shown, a flow path connecting the first port 411 and the third port 413 is formed.

That is, when the extraction unit 700 is closed, the pressure of the extraction line LE becomes greater than or equal to the set pressure, and accordingly, the pressing unit ( The force applied to the first diaphragm 442 of 440 is applied to the plunger 430 by the pressure acting on the flow path connected to the first port 411, the second port 412, and the third port 413. As shown in FIG. 19 , the first diaphragm 442 moves upward, and accordingly, the plunger 430 moves upward to close the first port 411 . Accordingly, the third port 413 connected to the inflow and outflow line LEI and the second port 412 connected to the drain connection line LDS communicate with each other so that the household water accommodated in the second chamber 320 is connected to the drain connection line LDS and It may be drained through the drain line LD.

At this time, the pressure by the chamber water line LLW is formed higher than the pressure of the extraction line LE, but the first diaphragm 442 comes into contact with the water introduced into the connection passage 421 connected to the extraction line LE. Since the area to be formed is larger than the area in which the plunger 430 comes into contact with the water introduced into the first port 411, even if the pressure of the extraction line LE is lower than the pressure of the chamber water line LLW, the plunger 430 And the pressing unit 440 moves toward the first port 411 to close the first port 411 and form a flow path connecting the second port 412 and the third port 413 . In addition, the plunger 430 is in contact with the water introduced into the first port 411 and the first diaphragm 442 is in contact with the water introduced into the connection passage 421 connected to the extraction line LE. By adjusting the pressure of the extraction line (LE) forming a flow path for closing the first port (411) can be set. This set pressure may be set to a value selected from 20 to 40% of the raw water pressure as an example.

In addition, when the extraction unit 700 is opened, the pressure of the extraction line (LE) is reduced than the set pressure, and accordingly, the pressure unit 440 by the pressure acting on the connection passage 421 communicated with the extraction line (LE). ), the force applied to the first diaphragm 442 is applied to the plunger 430 by the pressure acting on the flow path connected to the first port 411, the second port 412, and the third port 413. It becomes smaller than the force, and as shown in FIG. 20 , the first diaphragm 442 moves downward, and accordingly, the plunger 430 moves downward to close the third port 413 . Accordingly, the first port 411 connected to the chamber water line LLW and the third port 413 connected to the inflow and outflow line LEI communicate with each other to communicate with the living water supplied through the chamber water line LLW to the second chamber 320 . ) can be supplied.

[Auto shutoff valve (500)]

Next, with reference to FIGS. 1 to 4 and FIGS. 21 to 24 , the automatic shutoff valve 500 will be described.

When the pressure inside the storage unit 300 is greater than or equal to the set pressure, or the pressure on the flow path connecting the storage unit 300 and the extraction unit 700 is equal to or greater than the set pressure, the automatic shut-off valve 500 is to block the inflow of

1 to 4 and 21 to 24 , the automatic shut-off valve 500 is a first flow path part (FIG. 22) and a second flow passage (see 521 in FIG. 22) connected to the pressure transmission line LP branched from the flow passage connecting the storage unit 300 and the extraction unit 700.

In this case, the first flow path unit 531 may include a first port 511 and a second port 512 , and may be provided at the front or rear end of the filtering unit 200 , or inside the filtering unit 200 . . For example, as shown in FIGS. 1 to 4 , the first flow path part 531 may be connected to the front end of the reverse osmosis filter 250 , but if it can block the inflow of raw water, its installation location is this It is not limited. That is, the first flow path part 531 may be installed in the raw water line LRW located at the front end of the first filter 210 or located between the first filter 210 and the second filter 220 . Also, it is possible to be positioned between the reverse osmosis filter 250 and the additional filter 260 .

In addition, the second flow path part 521 is connected to the pressure transmission line LP to receive the pressure of the extraction line LE.

As shown in FIGS. 1 to 4 , the pressure transmission line LP includes purified water discharge lines LPW2 and LPW3 and an extraction line located on a flow path connecting the storage unit 300 and the extraction unit 700 . It may be configured to branch from the pressure line connection part (TC3), which is the connection point of the (LE).

As purified water is supplied to the first chamber 310 of the storage unit 300 in a state in which the extraction unit 700 is closed, the extraction connection line (LCE) and extraction connected to the extraction unit 700 by the pressure of the raw water The pressure of the line LE is gradually increased, and thus, the increased pressure of the extraction line LE is transmitted to the second flow path part 521 of the automatic shutoff valve 500 through the pressure transmission line LP. At this time, the second flow path portion 521 includes a third port 513 and a fourth port 514 , the third port 513 is connected to the pressure transmission line LP, and a fourth port 514 . ) is closed with a plug or a blocking member 550 such as a valve, the pressure transmitted to the second flow path portion 521 becomes the same as the pressure of the extraction line (LE).

In addition, since the second check valve CV2 is installed in the purified water discharge lines LPW2 and LPW3, the purified water accommodated in the extraction line LE cannot flow back to the storage unit 300 or the reverse osmosis filter 250 side. Accordingly, when the extraction of purified water through the extraction unit 700 is stopped, the pressures of the extraction connection line LCE, the extraction line LE, and the pressure transmission line LP have the same value.

As described above, when the pressure of the extraction line LE and the pressure transmission line LP gradually increases, the pressure applied to the second flow path part 521 gradually increases. When the falling pressure is greater than or equal to the set pressure, the first flow path portion 531 of the automatic shutoff valve 500 may be closed.

An example of such an automatic shutoff valve 500 will be described with reference to FIGS. 21 to 24 .

21 is a perspective view illustrating an example of a self-closing valve 500 provided in a water treatment apparatus according to an embodiment of the present invention, and FIG. 22 is a cross-sectional view of the self-closing valve 500 shown in FIG. 23 is a cross-sectional view illustrating a state when there is flow in the first flow path part 531 of the self-closing valve 500 shown in FIG. 22, and FIG. 1 is a cross-sectional view illustrating a state in which the flow is blocked in the flow passage 531 .

As shown in FIGS. 21 to 24 , the automatic shutoff valve 500 includes a first body 530 having a first flow path part 531 and a second body having a second flow path part 521 . A blocking member 540 for blocking the first flow passage 531 is provided when the pressure of the 520 and the second flow passage 521 is equal to or greater than the set pressure.

The first body 530 includes a first port 511 and a second port 512 respectively connected to both ends of the first flow path part 531 as described above, and the first flow path part 531 . has a curved flow path structure so that the first flow path part 531 can be closed when the pressure of the second flow path part 521 is increased.

In addition, the second body 520 has a structure connected to the exterior of the first body 530 , and a blocking member 540 is installed between the first body 530 and the second body 520 . .

At this time, the blocking member 540 restricts the flow of water flowing through the first flow path part 531 according to an increase in the pressure of the second flow path part 521 . It is provided so as to receive the pressure of water flowing through the flow passage 521 .

That is, one side of the blocking member 540 is configured to contact water flowing through the first flow path part 531 , and the other side is configured to contact water flowing through the second flow path part 521 .

To this end, the first body 530 is configured such that a part of the first flow path part 531 directly communicates with the blocking member 540 , and the second body 520 is the second flow path part 521 . It may have a structure in which a communication hole 522 is formed on an outer circumferential surface so that water can flow into the blocking member 540 .

In addition, the blocking member 540 includes a first diaphragm DPL that is pressurized in contact with water flowing through the first flow path 531 , and a first diaphragm DPL that is pressed in contact with water flowing through the second flow path 521 . A second diaphragm (DPU) may be provided.

In this case, the first diaphragm DPL and the second diaphragm DPU may be formed of a flexible material to be deformable according to the pressure of the second flow path part 521 . That is, the first diaphragm DPL and the second diaphragm DPU have a flow in the first flow path part 531 shown in FIG. 23 and the first flow path part 531 shown in FIG. 24 . It may be formed of a flexible material so that it can move between states in which the flow is blocked.

In addition, the blocking member 540 may include a lifting member 541 provided between the first diaphragm DPL and the second diaphragm DPU. The lifting member 541 supports the first diaphragm (DPL) and the second diaphragm (DPU) made of a flexible material and can move together with the first diaphragm (DPL) and the second diaphragm (DPU). It may be formed of a material having a certain rigidity so that the

In addition, the blocking member 540 may include a guide member 542 guided by the guide protrusion 532 of the first body 530 to guide the movement of the lifting member 541 . In this case, a sealing member OR2 is installed around the guide member 542 to close the first flow path part 531 according to the movement of the blocking member 540 . However, the configuration of the blocking member 540 for closing the first flow path part 531 is not limited to FIGS. 22 to 24 , and various modifications are possible. For example, the first diaphragm DPL may be configured to directly close the first flow path part 531 .

1 to 4 , since the first flow path part 531 is connected to the connection line LC between the second filter 220 and the reverse osmosis filter 250 , the raw water introduced from the raw water flow path LRW is The first flow path part 531 flows through the first filter 210 and the second filter 220 in a slightly reduced pressure state. In addition, since the second flow path part 521 has passed through the reverse osmosis filter 250 and the additional filter 260 , the raw water introduced from the raw water flow path LRW is decompressed to a certain level. Accordingly, the pressure of the water in the first flow passage part 531 is higher than the pressure of the water in the second flow passage part 521 . In this state, in order to block the first flow path part 531 by moving the blocking member 540 toward the first flow path part 531 by the water pressure of the second flow path part 521, the second diaphragm (DPU) ) of the pressing part may have a diameter D2 larger than the diameter D1 of the pressing part of the first diaphragm DPL.

22 to 24 , the diameter D1 of the pressing part at which the first diaphragm DPL comes into contact with the first flow path part 531 and the second diaphragm DPU are connected to the second flow path part 521 . ) by adjusting the ratio of the diameter D2 of the pressing part in contact with the first flow path part 531 by moving the blocking member 540 toward the first flow path part 531 side by the pressure of water in the second flow path part 521 . ) can be closed.

At this time, the set pressure for the automatic shutoff valve 500 to operate may be set between 40% and 80% of the raw water pressure, preferably between 50% and 70% of the raw water pressure. That is, the pressure inside the storage unit 300 is greater than or equal to the pressure set between 40% to 80% of the raw water pressure, or the pressure on the flow path connecting the storage unit 300 and the extraction unit 700 is 40% of the raw water pressure. When more than the pressure set between % ~ 80%, the automatic shutoff valve 500 may be configured to block the inflow of raw water.

For example, when the set pressure is set to 60% of the raw water pressure, when the pressure of the extraction line LE and the pressure transmission line LP connected thereto becomes 60% or more of the raw water pressure, the second flow path part 521 ), the diameter D2 of the pressing part of the second diaphragm DPU and the diameter D1 of the pressing part of the first diaphragm DPL may be set to close the first flow path part 531 by the pressure of water. .

On the other hand, if the set pressure is set to 80% or more of the raw water pressure, the raw water is decompressed while passing through a plurality of filters provided in the filtration unit 200, so that the pressure of the water flowing through the extraction line LE can reach the set pressure. There may be a case where there is no case, and in this case, even if the first chamber 310 of the storage unit 300 is completely filled, the inflow of raw water cannot be blocked. In addition, if the set pressure is set to less than 40% of the raw water pressure, the pressure of the extraction line (LE) becomes too low and the automatic shutoff valve ( 500) may work.

In consideration of this point, it is necessary to set the set pressure between 40% and 80% of the raw water pressure, and it is preferable to set it between 50% and 70% of the raw water pressure for more stable operation. That is, the set pressure is selected from a value of 70% or less of the raw water pressure so that the pressure of the extraction line (LE) can sufficiently reach the set pressure even in an area where the water pressure is low, and the first chamber 310 of the storage unit 300 The set pressure can be selected from 50% or more of the raw water pressure so that the water can be sufficiently filled with purified water.

On the other hand, the first to fourth ports (511, 512, 513, 514) are equipped with a fitting member (not numbered) and a sealing member (OR), the connection line (LC) of the filtration unit 200, the pressure transmission line ( LP), the blocking member 550 may be configured to be easily connected.

Referring to FIG. 23 , the pressure is transmitted to the second flow path part 521 through the third port 513 connected to the pressure transmission line LP, and as shown in FIGS. 1 to 4 , the fourth port 514 . ) is closed by the blocking member 550 , so the pressure of the second flow path 521 is maintained to be the same as the pressure of the pressure transmission line LP.

On the other hand, when the extraction unit 700 is closed, purified water filtered by the pressure of the raw water cannot be discharged through the extraction unit 700 , so it is supplied to the storage unit 300 . As purified water is supplied to the storage unit 300, the volume of the first chamber 310 increases and the volume of the second chamber 320 decreases. When the first chamber 310 is full of purified water, the purified water is stored in the storage unit ( 300) can no longer be supplied, and thus the pressure of the purified water supply line LPW1 increases.

As the pressure of the purified water supply line LPW1 rises, the pressure of the extraction line LE connected thereto also increases, and the pressure of the extraction line LE increases through the pressure transmission line LP in the second flow passage 521 . is transmitted to

Referring to FIG. 24 , when the pressure transmitted to the second flow path part 521 through the pressure transmission line LP is equal to or greater than the set pressure, the second diaphragm DPU is moved by the water of the second flow path part 521 . pressure will rise.

At this time, the pressure is also transmitted to the first diaphragm DPL by the water of the first flow path part 531 . In this situation, if the force due to the pressure transmitted to the second diaphragm DPU is greater than the force due to the pressure transmitted to the first diaphragm DPL, the elevating member 541 to which the second diaphragm DPU is attached, and The first diaphragm DPL moves toward the first flow path part 531 . Accordingly, as shown in FIG. 24 , the first flow path part 531 may be closed by the sealing member OR2 .

On the other hand, when the first chamber 310 is filled with purified water by a certain amount or more, the volume of the first chamber 310 becomes the maximum or close to the maximum volume, and purified water is supplied to the first chamber 310 of the storage unit 300 . This is not possible, and this causes the pressure of the first chamber 310 to increase above a certain pressure. This pressure is transmitted to the purified water supply line (LPW1), the extraction line (LE) and the pressure transmission line (LP). Accordingly, even when the internal pressure of the storage unit 300 is greater than or equal to the set pressure, the supply of raw water can be cut off by the automatic shutoff valve 500 .

[Pressure valve (600)]

The pressure reducing valve 600 is installed to reduce the fluctuating pressure generated when the flow path switching valve 400 is switched.

To this end, as shown in FIGS. 1 to 4 , the pressure reducing valve 600 is disposed in the flow path between the storage unit 300 and the flow path switching valve 400 , and the flow path switching valve from the storage unit 300 is configured to depressurize the flow in the (400) direction.

As described above, the flow path switching valve 400 switches the flow path according to the pressure of the extraction line LE through which purified water flows to the extraction unit 700 so that the domestic water that has not passed through the reverse osmosis filter 250 is introduced. A first port 411 connected to the chamber water line LLW, a second port 412 connected to the drain line LD, and a third port 413 connected to the second chamber 320 are provided. It is configured to include a first body portion 410 and a second body portion 420 connected to the extraction line (LE). In addition, as described above, the flow path switching valve 400 forms a flow path through which purified water moves from the storage unit 300 to the extraction unit 700 when the pressure of the extraction line LE is lower than the set pressure, and the extraction When the pressure of the line LE is higher than the set pressure, a flow path for storing purified water is formed in the storage unit 300 , and a flow path for supplying water introduced from the filtering unit 200 to the second chamber 320 . A flow path is switched between a flow path for discharging water discharged from the second chamber 320 to the drain line LD.

When the flow path switching occurs in the flow path switching valve 400, that is, in the process of switching to the purified water storage process immediately after purified water extraction, the pressure of the extraction line LE and the first body portion 410 of the flow path switching valve 400 are connected to each other. As the first diaphragm 442 vibrates to find a pressure balance due to a change in the pressure difference of the flowing fluid, a chattering phenomenon occurs, thereby generating noise and vibration.

In order to prevent this chattering phenomenon, a pressure reducing valve 600 is installed between the third port 413 of the flow path switching valve 400 and the second chamber 320 of the storage unit 300 .

When the water stored in the second chamber 320 is discharged to the drain line LD, the pressure reducing valve 600 reduces the flow from the storage unit 300 toward the flow path switching valve 400 . Accordingly, the water flowing through the pressure reducing valve 600 may be maintained below the set pressure. Since the pressure of water flowing into the flow path switching valve 400 can be maintained below the set pressure by the pressure reduction of the pressure reducing valve 600 , the chattering phenomenon of the flow path switching valve 400 can be prevented.

However, the pressure reducing valve 600 is configured not to act as a resistance in the flow from the flow path switching valve 400 to the storage unit 300 . Accordingly, the water flowing into the pressure reducing valve 600 from the third port 413 of the flow path switching valve 400 passes through the pressure reducing valve 600 without resistance and is supplied to the second chamber 320 of the storage unit 300 . Therefore, the volume of the second chamber 320 can be easily increased, and accordingly, the purified water stored in the first chamber 310 can be easily discharged.

In addition, the pressure reducing valve 600 is a flow path between the second chamber 320 and the third port 413 when the second chamber 320 is fully filled and all the purified water of the first chamber 310 is discharged. By having a structure that blocks the water, it is possible to prevent the housing 330 from being subjected to raw water pressure and being destroyed when the purified water inside the partition member 340 is depleted.

An example of such a pressure reducing valve 600 will be described with reference to FIGS. 25 to 29 .

25 is a perspective view illustrating an example of a pressure reducing valve 600 provided in a water treatment apparatus according to an embodiment of the present invention, FIG. 26 is a cross-sectional view of the pressure reducing valve 600 shown in FIG. 25, and FIG. 27 is 26 is a cross-sectional view showing the flow state of the pressure reducing valve 600 shown in FIG. 26, FIG. 28 is a cross-sectional view showing a state in which the flow is reduced compared to the case of FIG. 27, and FIG. 29 is the pressure reducing valve 600 shown in FIG. It is a cross-sectional view showing a state in which the flow of

As shown in FIG. 26 , the pressure reducing valve 600 includes an inner body 620 and an outer body 630 , and the moving member 640 is moved between the inner body 620 and the outer body 630 . An elastic member 650 that is compressed or stretched according to the pressure is installed.

The moving member 640 has a seating portion 642 in which the sealing member 660 is installed on the second outlet 612 side, and a side flow path 643 is formed around the seating portion 642, It has a structure in which a central opening 644 is formed in the center of the seating portion 642 .

In addition, the sealing member 660 closes the opening 621 of the inner body 620 according to the movement of the moving member 640 or the width of the variable flow path located between the opening 621 and the sealing member 660 ( length) (L) will be changed.

In addition, a first outlet 611 connected to the second chamber 320 of the storage unit 300 is formed in the inner body 620 located on one side of the pressure reducing valve 600 , and is formed on the other side of the pressure reducing valve 600 . A second outlet 612 connected to the third port 413 of the flow path switching valve 400 is formed in the located outer body 630 . A connecting member FC, such as a fitting member, may be installed at the first outlet 611 and the second outlet 612 to facilitate the connection of the pipe.

On the other hand, between the inner surface of the moving member 640 and the outer surface of the inner body 620, and between the outer surface of the moving member 640 and the inner surface of the outer body 630, a sealing member (OR) is installed so that the water restrict the flow.

The elastic member 650 provided in the pressure reducing valve 600 is maintained in a tensioned state below the set pressure, and is compressed when the set pressure is higher than the set pressure, thereby reducing the pressure.

For example, as shown in FIG. 27, when the pressure on the side of the second outlet 612, which is the water outlet, is less than the set pressure when forward water passes in the water purification process, the elastic member 650 maintains the maximum tension state while maintaining Free flow is made from the first outlet 611 of the pressure reducing valve 600 toward the second outlet 612 .

However, when switching to the water purification process immediately after extracting purified water, a chattering phenomenon occurs in the flow path switching process of the flow path switching valve 400 , and due to this chattering phenomenon, the pressure rises above the set pressure on the second outlet 612 side. cases will occur. As such, when the pressure on the side of the second outlet 612 rises above the set pressure, the moving member 640 and the sealing member 660 compress the elastic member 650 as shown in FIG. 1 moves toward the outlet 611 , and accordingly, the width L1 of the variable flow path located between the opening 621 of the inner body 620 and the sealing member 660 is reduced. As such, when the pressure on the second outlet 612 side rises above the set pressure, the width L1 of the variable flow path is narrowed and the flow rate is reduced, so that the pressure on the second outlet 612 side is lower than the set pressure. can be maintained, thereby preventing or minimizing chattering.

On the other hand, in the purified water extraction process, the second chamber 320 is connected from the second outlet 612 connected to the third port 413 of the flow path switching valve 400 by the flow path switching of the flow path switching valve 400 . 1 Reverse water flow is made toward the outlet (611).

In the process of reverse water flow, since the pressure of the water acquisition part is less than the set pressure, the elastic member 650 is maintained in the maximum tension state, and water flow is performed without flow resistance. However, when the first chamber 310 is all empty and the second chamber 320 is full, the pressure of the acquisition part becomes more than the set pressure, and accordingly, as shown in FIG. 29 , the elastic member 650 is As it is compressed to the maximum, the sealing member 660 closes the opening 621 of the inner body 620 .

In the case where the second chamber 320 of the storage unit 300 is fully filled and the pressure of the raw water continues to be received, the housing 330 of the storage unit 300 may be destroyed. By blocking the flow path between the second chamber 320 and the third port 413 of the flow path switching valve 400 , it is possible to additionally serve as a safety device for preventing the housing 330 from being destroyed.

[Air supply unit ( AP )]

Finally, the air supply unit AP may be installed in a flow path connected to the storage unit 300 to supply air to the storage unit 300 .

This air supply unit (AP) is installed in order to discharge the water contained in the storage unit 300 or to check the leakage of the flow path and/or the storage unit 300 during the manufacturing and use process or to check whether the parts installed on the flow path are abnormal. can be

That is, the storage unit 300 includes a first chamber 310 and a second chamber 320 , and by completely extracting the purified water, the first chamber 310 containing the purified water can be emptied, and the first chamber 310 . ), it is possible to empty the second chamber 320 by completely filling the water with purified water.

However, since the first chamber 310 and the second chamber 320 are separated by a partition member 340 made of a flexible material, there is a limitation in installing a separate drain valve structure like a storage tank having a conventional fixed shape. there is

Accordingly, by supplying air to any one of the first chamber 310 and the second chamber 320 divided by the partition member 340 made of a flexible material, it becomes possible to discharge the water contained in the remaining chamber.

To this end, the air supply unit AP may be connected to a purified water line LPW that supplies purified water filtered through at least a part of the filtering unit 200 to the storage unit 300 . That is, as shown in FIG. 4 , the purified water supply line LPW1 through which the purified water supplied from the purified water line LPW is supplied to the storage unit 300 and the purified water supplied from the purified water line LPW are When the extraction line LE supplied to the extraction unit 700 is provided, the air supply unit AP includes a flow path through which the purified water line LPW is connected to the extraction line LE and the purified water supply line LPW1. It may be installed in the integer branching part TC2 branching to .

In addition, since the air supply unit AP is installed in the purified water branch TC2 on the flow path connected to the first chamber 310 , the first chamber 310 is supplied with air through the air supply unit AP. By increasing the volume of the first chamber 310 and decreasing the volume of the second chamber 320 , the water contained in the second chamber 320 can be discharged. In this case, the second chamber 320 may be configured to be connected to the drain line LD so that the water accommodated in the second chamber 320 may be discharged through the drain line LD.

Therefore, after opening the extraction unit 700 to completely discharge the purified water contained in the first chamber 310 of the water purification unit, air is supplied to the first chamber 310 through the air supply unit AP to thereby supply the second chamber 320 . ) can completely drain the water contained in it. Therefore, in the manufacturing step of the water treatment device 100 , when the transfer of the water treatment device 100 is required, or when the water treatment device 100 is not used for a long period of time and the storage unit 300 needs cleaning, the storage unit 300 ), it becomes possible to discharge the water accommodated in the storage unit 300 without separating.

Meanwhile, the air supply unit AP may be configured as a port installed in a flow path connected to the storage unit 300 , that is, the purified water branch unit TC2 . Therefore, it is possible to easily supply air to the storage unit 300 only by connecting a pipe or a device for air supply to such a port.

In addition, the air supply unit AP may have a valve structure that blocks the flow path when air is not supplied and opens the flow path when air is supplied. Accordingly, when air supply is required, it is possible to easily supply air simply by connecting a pipe or a device for air supply and opening a valve. Such a valve may have a mechanical valve structure having an elastic member so that the flow path is opened when the pipe or device for air supply is inserted and the flow path is blocked when the pipe or device for air supply is disassembled, but is not limited thereto.

Meanwhile, referring to FIG. 4 , in the purified water line LPW, a first check is performed to prevent backflow of purified water from the purified water branch TC2 to the filtering unit 200 in the front end of the purified water branch TC2. A valve CV1 may be installed. In addition, a second check valve CV2 may be installed between the purified water branch unit TC2 and the extraction unit 700 to prevent backflow of purified water toward the purified water branch unit TC2. An additional filter 260 may be provided in the purified water discharge lines LPW2 and LPW3 connecting the base TC2 and the extraction line LE to additionally filter the purified water passing through the second check valve CV2. . And, the extraction line (LE) is configured to be connected through the auto shutoff valve (500) and the pressure transmission line (LP).

As such, in the case of the water treatment apparatus 100 having the flow path structure of FIG. 4 , by supplying air to the air supply unit AP, water contained in the second chamber 320 can be discharged as well as the flow path and/or storage unit. It becomes possible to check the leak of 300 or whether the parts installed on the flow path are abnormal.

When air is supplied to the air supply unit AP, air is supplied to the first chamber 310 to increase the volume of the first chamber 310 and water contained in the second chamber 320 may be discharged, and the second chamber 320 may be discharged. 2 When the water contained in the chamber 320 is completely discharged, the pressure of the air introduced from the air supply unit AP is the purified water supply line LPW1 connected to the air supply unit AP, the first check valve CV1 and the purified water The purified water line (LPW) between the branch part (TC2), the purified water supply line (LPW1), the purified water discharge line (LPW2, LPW3) between the purified water branch part (TC2) and the pressure line connection part (TC3), the extraction line (LE), It is delivered to the extraction connection line (LCE), the pressure transmission line (LP), and the second flow path part 521 of the automatic shut-off valve (500).

Therefore, even after the water contained in the second chamber 320 is completely discharged, when air is supplied through the air supply unit AP, the above-described flow paths LPW3, LPW1, LPW2, LPW3, LE connected to the air supply unit AP are performed. , LCE, LP, 521), there is a leak in the storage unit 300, or there is an abnormality in the function of the first check valve (CV1). It can be confirmed that it is emitted through LD).

As such, by installing the air supply unit AP in the flow path connected to the storage unit 300 in order to supply air to the storage unit 300 , the water contained in the storage unit 300 is discharged without separation of the storage unit 300 . It is possible, and it is possible to check for leaks in the flow path or to check whether the parts installed on the flow path are abnormal.

[Euro of water purification process]

Next, with reference to FIG. 2 , the operation of the water treatment device 100 when stored purified water will be described.

When the first chamber 310 of the storage unit 300 is not completely filled and the extraction unit 700 is closed, the pressure of the extraction line LE and the pressure transmission line LP connected thereto is less than the set pressure, so the automatic shutoff valve (500) remains open.

That is, in the case where the first chamber 310 of the storage unit 300 is not completely filled and the extraction of purified water is completed, the purified water will be supplied to the first chamber 310 of the storage unit 300 of the storage unit 300 . can

As shown in FIG. 2 , since the automatic shutoff valve 500 does not block the raw water, the raw water introduced from the raw water line LRW is filtered while passing through the first filter 210 , and the raw water pressure reducing valve REG. The pressure is reduced below a certain pressure through the , and supplied to the second filter 220 , and the water filtered in the second filter 220 is introduced into the reverse osmosis filter 250 .

At this time, the purified water filtered through the reverse osmosis filter 250 reaches the purified water branch TC2 through the purified water line LPW, and since the extraction unit 700 is closed, the purified water is purified from the purified water supply line LPW1. may be supplied to the first chamber 310 of the storage unit 300 through the

In addition, the household water that has not passed through the reverse osmosis filter 250 is discharged to the drain line LD through the drain valve VR. At this time, since the drain valve VR has a narrow flow path and functions as a flow resistance means, only a small flow rate (for example, 0.2 to 0.5 lpm) of the domestic water that has not passed through the reverse osmosis filter 250 passes through the drain line LD. can be released through

On the other hand, when the extraction unit 700 is closed and/or when purified water filtered through the reverse osmosis filter 250 is supplied to the first chamber 310 , the first chamber 310 and the purified water line connected thereto (LPW), the purified water discharge lines (LPW2, LPW3), and the pressure of the extraction line (LE) rises, and accordingly, the pressure of the connection passage 421 of the passage switching valve 400 also increases.

And, the force applied to the first diaphragm 442 of the pressurizing part 440 by the pressure of the connection passage 421 is the plunger by the living water of the chamber water line LLW flowing into the first port 411 . When it becomes greater than the force applied to the upper side of the 430, the plunger 430 is moved to a position where the inlet/outlet line LEI and the drain branch line LDS are connected, that is, as shown in FIG. 19, to be moved upward. can

That is, the pressure by the chamber water line LLW is formed to be higher than the pressure of the extraction line LE, but the first diaphragm 442 comes into contact with the water introduced into the connection passage 421 connected to the extraction line LE. Since the area of the plunger 430 is formed larger than the area in contact with the water introduced into the first port 411, even when the pressure of the extraction line LE is lower than the pressure of the chamber water line LLW, the plunger 430 And the pressing unit 440 moves toward the first port 411 to close the first port 411 and form a flow path connecting the second port 412 and the third port 413 .

As such, when a flow path connecting the second port 412 and the third port 413 is formed in the flow path switching valve 400 , the second chamber of the storage unit 300 as shown in FIGS. 2 and 19 . The water accommodated in the 320 may flow through the inlet/outlet line LEI, flow into the drain branch line LDS, and then be drained through the drain line LD. Accordingly, purified water may be continuously stored in the first chamber 310 of the storage unit 300 .

On the other hand, immediately after conversion to the purified water storage process after purified water extraction is made, the force applied to the upper side of the plunger 430 by the domestic water of the chamber water line (LLW) introduced into the first port 411 and the connection flow path 421 In the process of finding equilibrium between the forces applied to the first diaphragm 442 of the pressurizing part 440 by the pressure of

When the pressure rises above the set pressure on the side of the second outlet 612 due to this chattering phenomenon, the inlet/outlet line LEI between the second chamber 320 and the third port 413 of the flow path switching valve 400 . As shown in FIG. 28, the pressure reducing valve 600 installed in the moving member 640 and the sealing member 660 move toward the first outlet 611 while compressing the elastic member 650, and accordingly, the inner As the width L1 of the variable flow path located between the opening 621 of the body 620 and the sealing member 660 is reduced, the pressure at the second outlet 612 side can be maintained below the set pressure.

And, since the first port 411 is closed by the pressure of the extraction line LE, the domestic water that is not filtered in the reverse osmosis filter 250 goes to the first port 411 through the chamber water line LLW. It does not flow in and is drained to the outside through the drain line LD.

As such, when the purified water filtered by the reverse osmosis filter 250 is stored in the first chamber 310 of the storage unit 300 , since no other pressure is applied to the first chamber 310 other than the pressure of the purified water, It is possible to prevent the reverse pressure from acting on the reverse osmosis filter 250 . Accordingly, the flow rate of purified water filtered and discharged from the reverse osmosis filter 250 is not reduced and the filtration efficiency is not reduced.

Meanwhile, as purified water is supplied to the storage unit 300 , the volume of the first chamber 310 increases and the volume of the second chamber 320 decreases. When the first chamber 310 is full of purified water, the purified water is stored It can no longer be supplied to the unit 300 , and thus the pressure of the purified water supply line LPW1 is increased.

As the pressure of the purified water supply line LPW1 rises, the pressure of the extraction line LE connected thereto also increases, and the pressure of the extraction line LE increases the pressure of the automatic shutoff valve 500 through the pressure transmission line LP. It is transmitted to the second flow path part 521 .

At this time, when the pressure transmitted to the second flow path part 521 through the pressure transmission line LP exceeds the set pressure, the pressure of the second diaphragm DPU is increased by the water of the second flow path part 521 . do. In this situation, if the force due to the pressure transmitted to the second diaphragm DPU is greater than the force due to the pressure transmitted to the first diaphragm DPL, the lifting member and the first diaphragm to which the second diaphragm DPU is attached. The fram DPL moves toward the first flow path part 531 . Accordingly, as shown in FIG. 24 , the first flow path part 531 is closed by the sealing member OR2 to block the inflow of raw water, and the purification process is finished.

As such, when the raw water is blocked, the water contained in the reverse osmosis filter 250 and the water in the purified water line LPW between the reverse osmosis filter 250 and the first check valve CV1 do not act on the osmotic pressure. is discharged through the drain line LD. However, since the pressure of the extraction line LE is maintained at the set pressure by the first check valve CV1 and the second check valve CV2, the automatic shut-off valve 500 may continue to be closed.

[Front when extracting purified water]

Next, with reference to FIG. 3, the operation of the water treatment device 100 during extraction of purified water will be described.

When the extraction unit 700 is opened in a state in which the first chamber 310 of the storage unit 300 is filled with purified water, the purified water contained in the extraction line LE is discharged through the extraction unit 700 while the extraction line ( LE) is lowered.

Accordingly, the pressure of the pressure transmission line LP connected to the extraction line LE is reduced, and as shown in FIG. 23 , the automatic shutoff valve 500 is in an open state, and the inflow of raw water from the raw water line LRW. this is done

As shown in FIG. 3 , since the automatic shutoff valve 500 does not cut off the raw water, the raw water introduced from the raw water line LRW is filtered while passing through the first filter 210 , and the raw water pressure reducing valve REG. The pressure is reduced below a certain pressure through the , and supplied to the second filter 220 , and the water filtered in the second filter 220 is introduced into the reverse osmosis filter 250 .

At this time, the purified water filtered through the reverse osmosis filter 250 reaches the purified water branch TC2 through the purified water line LPW, and since the extraction unit 700 is in an open state, purified water is transferred to the purified water discharge line LPW2, LPW3), the extraction line LE, and the extraction connection line LCE are provided to the user in the extraction unit 700 .

In addition, the household water that has not passed through the reverse osmosis filter 250 is discharged to the drain line LD through the drain valve VR. At this time, since the drain valve VR has a narrow flow path and functions as a flow resistance means, only a small flow rate (for example, 0.2 to 0.5 lpm) of the domestic water that has not passed through the reverse osmosis filter 250 passes through the drain line LD. can be released through

On the other hand, when the extraction unit 700 is opened, the pressure of the extraction line LE is lowered as described above due to the discharge of purified water through the extraction unit 700 . Therefore, the force applied to the first diaphragm 442 of the pressurizing part 440 by the pressure of the connection flow path 421 of the flow path switching valve 400 is introduced into the first port 411 of the chamber water line LLW. ) becomes smaller than the force applied to the upper side of the plunger 430 by the domestic water, so as shown in FIG. 20, the plunger 430 moves downward and the first port 411 connected to the chamber water line LLW. ) and the third port 413 connected to the inflow and outflow line LEI form a communication state.

Accordingly, the domestic water that has not passed through the reverse osmosis filter 250 flows into the first port 411 of the flow path switching valve 400 through the chamber water line LLW, and then flows in and out connected to the third port 413 . The line LEI is introduced into the second chamber 320 . At this time, since flow resistance means for restricting the discharge of household water that has not passed through the reverse osmosis filter 250 is installed in the drain line LD, the household water passes through the chamber water line LLW to the second chamber ( When supplied to 320 , the amount of household water supplied to the second chamber 320 through the chamber water line LLW is greater than the amount of household water discharged to the drain line LD. As such, since the amount of domestic water discharged through the chamber water line (LLW) is large and the flow rate is high, when the domestic water is discharged through the chamber water line (LLW), the reverse osmosis filter 250 is flushed, and thus Accordingly, the life of the reverse osmosis filter 250 may be extended.

When the domestic water supplied through the chamber water line LLW is supplied to the second chamber 320 , the volume of the second chamber 320 increases, and accordingly, the purified water accommodated in the first chamber 310 is discharged.

The purified water discharged from the first chamber 310 flows into the purified water branch TC2 through the purified water supply line LPW1, and then, together with the purified water filtered by the reverse osmosis filter 250, purified water discharge lines LPW2, LPW3, It is provided to the user from the extraction unit 700 through the extraction line (LE) and the extraction connection line (LCE).

In this way, since the purified water is discharged by the raw water pressure, even when the reverse osmosis filter 250 is used, the purified water can be easily discharged to the outside, and the purified water can be extracted smoothly regardless of the installation location of the extraction unit 700 . it becomes possible

On the other hand, in the purified water extraction process, reverse water flow is performed by the pressure reducing valve 600 , and the elastic member 650 is maintained in a maximum tension state, so that water flow is performed without flow resistance. However, when the purified water of the first chamber 310 is completely discharged and the second chamber 320 is completely filled, as shown in FIG. 29 , the elastic member 650 is compressed to the maximum and the sealing member 660 is closed. The opening 621 of the inner body 620 is closed. Accordingly, by blocking the flow path between the second chamber 320 and the third port 413 of the flow path switching valve 400 through the pressure reducing valve 600, the role of a safety device to prevent the destruction of the housing 330 is added. can be done with

[Fig. 5 and Fig. 6 Example ]

Next, a water treatment apparatus 100 according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6 .

5 is a water pipe diagram of a water treatment apparatus according to another embodiment of the present invention, and FIG. 6 is a water piping diagram illustrating a modified example of the water treatment apparatus shown in FIG. 5 .

5, the first filter 210 and the second filter 220 are installed as a single composite filter in the embodiment shown in FIG. 1, and the pressure reducing valve 600 is excluded It is the same as the embodiment shown in FIG. 1 except for . In addition, in the case of the embodiment shown in FIG. 6 , in the embodiment shown in FIG. 4 , the first filter 210 and the second filter 220 are installed as one pre-treatment complex filter 210 ′, and the pressure reducing valve It is the same as the embodiment shown in FIG. 4 except that 600 is excluded.

Therefore, in order to avoid unnecessary duplication, detailed descriptions of the same or similar components will be omitted and only differences will be described.

5 and 6, the first filter 210 and the second filter 220 shown in FIGS. 1 and 4 are formed as a pre-processing composite filter 210'. For example, the pre-processing composite filter 210 ′ may include a composite filter of a sediment filter and a pre-carbon filter, but is not limited thereto.

In this way, when the pre-treatment complex filter 210 ′ is provided, the number of filters provided in the filtration unit 200 can be reduced, so that not only the piping for connecting the filter is simplified, but also spatial efficiency can be expected.

In addition, in the case of the embodiment shown in Figs. 5 and 6, the configuration of the pressure reducing valve 600 shown in Figs. 1 and 4 is omitted. However, in the case of the embodiment shown in Figs. 5 and 6, since it includes the configuration of the flow path switching valve 400 and the automatic shut-off valve 500, flow path switching is possible by the raw water pressure, and the pressure of the extraction line LE can automatically cut off the inflow of raw water. In addition, in the case of the embodiment shown in Fig. 6, since the air supply unit (AP) is included, drainage of the storage unit 300 is possible, and leak inspection of the storage unit 300 and/or the flow path is possible, and parts installed in the flow path It is possible to check whether there is an abnormality in

[In Figs. 7 and 8 Example ]

Next, a water treatment apparatus 100 according to another embodiment of the present invention will be described with reference to FIGS. 7 and 8 .

7 is a water pipe diagram of a water treatment apparatus according to another embodiment of the present invention, and FIG. 8 is a water piping diagram illustrating a modified example of the water treatment apparatus shown in FIG. 7 .

7 and 8, the additional filter 260 is installed between the first check valve CV1 and the purified water branch TC2 in the embodiment shown in FIGS. 5 and 6, and the additional filter It is the same as the embodiment shown in FIGS. 5 and 6 except that 260 and the purified water branch TC2 are connected to the purified water connection line LPW4.

Therefore, in order to avoid unnecessary duplication, detailed descriptions of the same or similar components will be omitted and only differences will be described.

7 and 8, since the additional filter 260 is installed between the first check valve CV1 and the purified water branch TC2, purified water filtered through the additional filter 260 is stored It is supplied to the first chamber 310 of the unit 300 or provided to the user through the extraction unit 700 .

In particular, in the case of the embodiment shown in FIGS. 7 and 8, the purified water accommodated in the first chamber 310 is purified from the purified water supply line (LPW1), the purified water discharge line (LPW2, LPW3), the extraction line (LE) and extraction when purified water is extracted. Since it is provided to the user through the connection line LCE, purified water discharged from the first chamber 310 may be discharged through the extraction unit 700 without going through a filter.

Therefore, in the embodiment shown in FIGS. 7 and 8, when compared to the embodiment shown in FIGS. 1 to 6, it is possible to obtain the effect that the differential pressure loss generated while passing through the additional filter 260 when extracting purified water can be removed. there is.

[Fig. 9 to degree 12's Example ]

Next, a water treatment apparatus 100 according to another embodiment of the present invention will be described with reference to FIGS. 9 to 12 .

9 is a water pipe diagram of a water treatment device according to another embodiment of the present invention, FIG. 10 is a water pipe diagram showing a flow path during storage of purified water of the water treatment device shown in FIG. 9, and FIG. 11 is the water treatment shown in FIG. It is a water pipe diagram showing a flow path at the time of extracting purified water of the apparatus, and FIG. 12 is a water pipe diagram showing a modified example of the water treatment apparatus shown in FIG.

9 to 12, the first filter 210 and the second filter 220 are installed as a single composite filter in the embodiment shown in FIG. 1, and the pressure reducing valve 600 is It is the same as the embodiment shown in FIG. 1 except that it is excluded and that the position of the chamber water line LLW is changed.

Therefore, in order to avoid unnecessary duplication, detailed descriptions of the same or similar components will be omitted and only differences will be described. However, in the case of the embodiment shown in FIGS. 9 to 12 , the first filter 210 and the second filter 220 are installed as one pre-treatment composite filter 210 ′, and the pressure reducing valve 600 is excluded. Since it is the same as in the case of the embodiment shown in FIGS. 5 and 6 , a detailed description will be omitted, and only the position change of the chamber number line LLW will be described.

In the case of the embodiment shown in FIGS. 9 to 11, the raw water is supplied to the second chamber 320, and in the case of the embodiment shown in FIG. 12, purified water filtered through at least a part of the filtration unit 200, Alternatively, the reverse osmosis filter 250 has a configuration in which water is introduced.

Specifically, in the case of the embodiment shown in FIGS. 9 to 11 , a chamber number line connected to the first port 411 of the flow path switching valve 400 in order to supply water to the second chamber 320 of the storage unit 300 . (LLW) is branched from the raw water line (LRW). That is, the raw water of the raw water line LRW is branched from the raw water branch TC4 and flows into the second chamber 320 of the storage unit 300 through the chamber water line LLW or into the pretreatment complex filter 210'. inlet and filtered.

In addition, in the case of the embodiment shown in FIG. 12 , the raw water introduced from the raw water line LRW is filtered by the pre-treatment complex filter 210 ′, and then branched from the raw water branch TC4 through the chamber water line LLW to the storage unit. It flows into the second chamber 320 of 300 or flows into the reverse osmosis filter 250 and is filtered.

The flow path at the time of storing purified water and the flow path at the time of extracting purified water of the embodiment of FIG. 9 are almost the same as in the case of the embodiment shown in FIGS. 2 and 3 except for the position of the chamber water line LLW, and briefly summarized as follows. .

First, referring to FIG. 10 , the raw water introduced from the raw water line (LRW) during storage of purified water is filtered through the pre-treatment complex filter 210 ′ and the reverse osmosis filter 250 , and then the purified water line (LPW) and the purified water supply line It is stored in the first chamber 310 of the storage unit 300 through (LPW1), and as purified water is stored in the first chamber 310, the water accommodated in the second chamber 320 is an inlet/outline line LEI, a flow path It is drained to the drain pipe through the drain connection line through the third port 413 and the second port 412 of the switching valve 400 . At this time, the flow path switching valve 400 forms a state in which the first port 411 is closed and the third port 413 communicates with the second port 412 as in the case of FIG. 2 . In addition, household water that has not passed through the reverse osmosis filter 250 is drained through the drain line LD. And, as in the case of FIG. 2 , when the first chamber 310 of the storage unit 300 is filled with purified water and the pressure of the extraction line LE rises above the set pressure, the automatic shutoff valve 500 is connected to the connection line LC ) to block the inflow of raw water.

And, referring to FIG. 11 , when purified water is extracted by opening the extraction unit 700 during purified water extraction, the pressure of the extraction line LE is lowered and the automatic shutoff valve 500 is opened to introduce raw water. . In addition, the pressure of the extraction line (LE) and the extraction connection line (LCE) is lowered by the opening of the extraction unit 700, and accordingly, the third port 413 of the flow path switching valve 400 is closed and the first port ( A flow path through which the 411 and the second port 412 communicate is formed.

Therefore, the raw water introduced from the raw water line (LRW) is filtered through the pre-treatment complex filter 210' and the reverse osmosis filter 250, and then the purified water line (LPW), the purified water discharge line (LPW2, LPW3), the extraction line ( LE) and the extraction connection line LCE are provided to the user in the extraction unit 700 .

On the other hand, household water that has not passed through the reverse osmosis filter 250 is discharged to the outside through the drain pipe.

In addition, since a flow path through which the first port 411 and the second port 412 communicate is formed in the flow path selector valve 400, raw water flows through the chamber water line LLW to the first port ( 411 ) and then supplied to the second chamber 320 through the inlet/outlet line LEI connected to the third port 413 . As raw water is supplied to the second chamber 320, the purified water accommodated in the first chamber 310 is a purified water supply line (LPW1), purified water discharge lines (LPW2, LPW3), an extraction line (LE), and an extraction connection line (LCE). is provided to the user by the extraction unit 700 through

As such, in the case of the embodiment shown in FIGS. 9 to 12 , since raw water or purified water filtered through the filter in front of the reverse osmosis filter 250 is supplied to the second chamber 320, the pressure of the raw water There is an advantage in that the loss can be minimized and this can be used for extraction of the purified water accommodated in the first chamber 310 . In particular, since the raw water pressure or a high pressure similar to the raw water pressure is used, the purified water accommodated in the first chamber 310 is quickly extracted, thereby increasing the extraction amount per unit time of the extraction unit 700 .

[Fig. 13 to degree 15's Example ]

Next, a water treatment apparatus 100 according to another embodiment of the present invention will be described with reference to FIGS. 13 to 15 .

13 is a water pipe diagram of a water treatment device according to another embodiment of the present invention, FIG. 14 is a water pipe diagram showing a flow path during storage of purified water of the water treatment device shown in FIG. 13, and FIG. 15 is the water treatment shown in FIG. It is a water pipe diagram which shows the flow path at the time of the purified water extraction of an apparatus.

13 to 15, there is a difference in the installation position and specific operation of the automatic shutoff valve 500 when compared to the embodiment shown in FIG. 4, and the pressure transmission line LP is not provided. Except for, it is the same as the embodiment shown in FIG. 4 .

Therefore, in order to avoid unnecessary duplication, detailed descriptions of the same or similar components will be omitted and only differences related to the automatic shutoff valve 500 will be examined.

13 to 15 , the automatic shutoff valve 500 is configured to block the inflow of raw water when the pressure on the flow path provided in the filter unit 200 is greater than or equal to a set pressure.

Specifically, the automatic shutoff valve 500 is provided in the first flow path part 531 connected to the drain line LD through which the domestic water that has not passed through the reverse osmosis filter 250 is discharged, and the filter part 200 . and a second flow path part 521 through which purified water filtered through at least a portion of the filter is flowed.

That is, the first port 411 and the second port 412 of the auto shutoff valve 500 are connected to the drain line LD through which domestic water that has not passed through the reverse osmosis filter 250 is discharged, and the third port 413 and the fourth port 424 are installed in the purified water line (LPW) through which the purified water filtered through the reverse osmosis filter 250 flows.

In addition, between the reverse osmosis filter 250 and the automatic shutoff valve 500, a first check valve (CV1) for preventing the reverse flow of purified water from the automatic shutoff valve 500 side to the reverse osmosis filter 250 side is positioned do.

Referring to FIG. 14 , when purified water is stored, raw water introduced from the raw water line LRW is filtered by the reverse osmosis filter 250 through the pre-treatment complex filter 210 ′.

The purified water filtered through the reverse osmosis filter 250 passes through the first check valve CV1 provided in the purified water line LPW, the third port 413 and the fourth port 424 of the automatic shutoff valve 500 . It arrives at the purified water branch TC2 through the water, and since the extraction unit 700 is in a closed state, purified water flows into the first chamber 310 of the storage unit 300 through the purified water supply line LPW1 .

In addition, the household water that has not passed through the reverse osmosis filter 250 is discharged to the drain line LD through the drain valve VR.

When the pressure of the extraction line LE is higher than the set pressure due to the pressure rise of the first chamber 310, the first port 411 of the flow path switching valve 400 is closed, and the third port 413 and the second port A flow path through which the 412 communicates is formed, and accordingly, the water accommodated in the second chamber 320 passes through the inflow and outflow line LEI and the third port 413 and the second port 412 of the flow path switching valve 400 . It is discharged to the drain connection line through , and is finally drained through the drain line LD.

In addition, when a predetermined amount of purified water is filled in the first chamber 310 of the storage unit 300 and the pressure of the first chamber 310 rises, the pressure of the purified water supply line LPW1 and the purified water line LPW connected thereto rises. . Referring to FIG. 24 , when the pressure of the purified water line LPW rises above the set pressure, the second flow path part (in FIG. 24 ) between the third port 413 and the fourth port 424 of the automatic shutoff valve 500 . The pressure of the 521 is increased, and accordingly, the second diaphragm DPU moves toward the first flow path part 531 and the first flow path part 531 between the first port 411 and the second port 412. ) will be closed.

At this time, since the first flow path part 531 is connected to the drain line LD, when the pressure of the purified water line LPW connected to the second flow path part 521 rises, the automatic shutoff valve 500 operates and the drain line ( LD) is closed.

Therefore, since the domestic water that has not passed through the reverse osmosis filter 250 is not discharged to the drain line LD, the purified water that has passed through the reverse osmosis filter 250 is connected to the purified water line LPW and the flow path and the first chamber 310 . Since the drain of domestic water is limited by the automatic shut-off valve 500 as well as being filled in the raw water, the raw water of the raw water line LRW cannot flow into the water treatment device 100 and is blocked, and the purification process is terminated. In addition, since the first check valve CV1 is installed between the third port 413 of the automatic shutoff valve 500 and the reverse osmosis filter 250, the pressure of the purified water line LPW can be continuously maintained, so the automatic shutoff valve 500 maintains the closed state of the drain line LD.

Referring to FIG. 15, the process of extracting purified water is as follows.

When purified water is extracted by opening the extraction unit 700 during purified water extraction, the pressure of the extraction line LE decreases, and accordingly, the pressure of the purified water line LPW also decreases. Accordingly, the closing of the drain line LD of the automatic shutoff valve 500 is terminated, and the inflow of raw water is made. In addition, the pressure of the extraction line (LE) and the extraction connection line (LCE) is lowered by the opening of the extraction unit 700, and accordingly, the third port 413 of the flow path switching valve 400 is closed and the first port ( A flow path through which the 411 and the second port 412 communicate is formed.

Therefore, the raw water introduced from the raw water line (LRW) is filtered through the pre-treatment complex filter 210' and the reverse osmosis filter 250, and then the purified water line (LPW), the purified water discharge line (LPW2, LPW3), the extraction line ( LE) and the extraction connection line LCE are provided to the user in the extraction unit 700 .

On the other hand, household water that has not passed through the reverse osmosis filter 250 is discharged to the outside through the drain pipe.

In addition, since a flow path through which the first port 411 and the second port 412 communicate is formed in the flow path switching valve 400 , most of the domestic water that has not passed through the reverse osmosis filter 250 is a chamber water line (LLW). After being introduced into the first port 411 of the flow path switching valve 400 through the , it is supplied to the second chamber 320 through the inlet/outlet line LEI connected to the third port 413 . As raw water is supplied to the second chamber 320, the purified water accommodated in the first chamber 310 is a purified water supply line (LPW1), purified water discharge lines (LPW2, LPW3), an extraction line (LE), and an extraction connection line (LCE). is provided to the user by the extraction unit 700 through

As such, in the case of the embodiment shown in Figs. 13 to 15, unlike the case of the embodiment shown in Figs. 1 to 11, the automatic shut-off valve 500 is disposed in the drain line LD through which the domestic water is discharged, thereby purified water. It is possible to remove the differential pressure loss due to the automatic shut-off valve 500 during extraction.

As described above, when the water treatment device 100 according to the present invention is used, the first chamber 310 of the storage unit 300 is filtered by the reverse osmosis filter 250 by one flow path switching valve 400 . Purified water stored in the first chamber 310 is discharged as purified water is stored, or raw water or raw water that has not been filtered in the reverse osmosis filter 250 or purified water filtered through a part of the filter flows into the second chamber 320 . can Accordingly, even if the reverse osmosis filter 250 is used, purified water may be easily discharged to the outside, and the location of the extraction unit 700 from which purified water is discharged may not be limited.

In addition, it is possible to prevent the reverse pressure from acting on the reverse osmosis filter 250 , and to prevent the flow rate of purified water filtered and discharged from the reverse osmosis filter 250 from being reduced and the filtration efficiency from being reduced.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible within the scope without departing from the technical spirit of the present invention described in the claims. It will be apparent to those of ordinary skill in the art.

100... Water treatment unit 200... Filtration unit
210... first filter 220... second filter
250... Reverse osmosis filter (3rd filter) 240... Additional filter
300... Reservoir 310... First chamber
320... second chamber 330... housing
340... Partition member 400... Flow changeover valve
410... first body 411... first port
412... 2nd port 413... 3rd port
414... Moving part 415... Pressure transmitting part
420... Second body part 421... Connection flow path
421a... Connection hole 424... Fourth port
425... 5th port 430... Plunger
431... Elastic member 440... Pressing part
441... Pressing member 442... First diaphragm
443... 2nd diaphragm 500... Auto shutoff valve
511... 1st port 512... 2nd port
513... 3rd port 514... 4th port
520...Second body 521...Second flow path part
522... Communication hole 530... First body
531... First flow path 540... Blocking member
541... Elevating member 542... Guide member
550... blocking member DPL... first diaphragm
DPU... 2nd diaphragm 600... Pressure reducing valve
611... First outlet 612... Second outlet
620... inner body 630... outer body
640... Moving member 650... Elastic member
660... sealing member 700... extraction part
LRW... Raw water line LC... Connecting line
LPW... Water purification line LPW1... Water purification supply line
LPW2, LPW3... Purified water discharge line LPW4... Water purification connection line
LE... Extraction line LCE... Extraction connection line
LLW... Chamber water line LD... Drain line
LDS... Drain connection line LEI... Inlet/outlet line
LP... pressure transmission line TC1... drain connection
TC2... Water purification branch TC3... Pressure line connection
TC4... Source water branch CV1... 1st check valve
CV2... 2nd check valve REG... Raw water pressure reducing valve
VR... Drain valve OR, OR2... Sealing member

Claims (17)

a filtration unit for filtering raw water;
a storage unit configured to store purified water filtered through at least a portion of the filter unit, and having a first chamber and a second chamber whose volume changes according to a change in the volume of the first chamber;
an extraction unit installed to provide filtered purified water to a user; and
and an air supply unit installed in a flow path connected to the storage unit to supply air to any one of the first chamber and the second chamber of the storage unit;
The air supply unit is connected to a purified water line for supplying purified water filtered through at least a portion of the filtering unit to the storage unit,
a purified water supply line through which the purified water supplied from the purified water line is supplied to the storage unit; and an extraction line through which the purified water supplied from the purified water line is supplied to the extraction unit;
The air supply unit is a water treatment device, characterized in that the water treatment line is installed in a flow path connected to the extraction line and the purified water branching portion that branches into the purified water supply line. delete delete According to claim 1,
The water treatment line includes a first check valve installed at a front end of the purified water branch to prevent backflow of purified water from the purified water branch to the filtering unit. According to claim 1,
A second check valve for preventing the reverse flow of purified water to the purified water branch is installed between the purified water branch and the extraction unit. 6. The method of claim 5,
An additional filter is provided between the second check valve and the extraction line to further filter the purified water passing through the second check valve. 7. The method of claim 6,
The additional filter is a water treatment device, characterized in that installed in the purified water discharge line connecting the purified water branch and the extraction line. According to claim 1,
an automatic shutoff valve for blocking the inflow of raw water into the filtration unit when the pressure in the extraction line is greater than or equal to a set pressure;
It further includes
The extraction line is a water treatment device, characterized in that connected to the automatic shutoff valve and a pressure transmission line. 5. The method of claim 4,
An additional filter is provided between the first check valve and the purified water branch to further filter the purified water that has passed through the first check valve. 10. The method of any one of claims 1, 4 to 9,
The air supply unit is a water treatment device, characterized in that provided with a port installed in the flow path connected to the storage unit. 11. The method of claim 10,
The air supply unit is a water treatment device, characterized in that it has a valve structure that blocks the flow path when air is not supplied and opens the flow path when air is supplied. a filtration unit for filtering raw water;
a storage unit configured to store purified water filtered through at least a portion of the filter unit, and having a first chamber and a second chamber whose volume changes according to a change in the volume of the first chamber;
an extraction unit installed to provide filtered purified water to a user; and
and an air supply unit installed in a flow path connected to the storage unit to supply air to any one of the first chamber and the second chamber of the storage unit;
The air supply unit is provided in a flow path connected to the first chamber,
Water treatment apparatus, characterized in that the water contained in the second chamber is discharged by increasing the volume of the first chamber by supplying air to the first chamber and decreasing the volume of the second chamber. 13. The method of claim 12,
The second chamber is a water treatment device, characterized in that connected to the drain line. 14. The method of claim 13,
a flow path switching valve configured to switch a flow path so that raw water or water supplied from the filter unit is supplied to the second chamber or water accommodated in the second chamber is discharged to the drain line;
Water treatment device, characterized in that it further comprises. 10. The method of any one of claims 1, 4 to 9,
The storage unit,
A housing having an inner space to store the purified water filtered by the filter unit, and a partition that divides the inner space of the housing into the first chamber and the second chamber, and is deformed according to a change in volume of the first chamber and the second chamber A water treatment device comprising a member. 16. The method of claim 15,
The partition member is a water treatment device, characterized in that the balloon shape formed with an outlet on one side. 8. The method according to any one of claims 1, 4 to 7,
Into the first chamber, purified water filtered through at least a portion of the filtration unit is introduced,
Water treatment apparatus, characterized in that the water having a lower degree of filtration than the first chamber is introduced into the second chamber.

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