KR20080004250U - Automatic shut off valve of puring water system - Google Patents

Abstract

In the water purification system using the reverse osmosis membrane filter, the purified water discharged by the use of the reverse osmosis membrane filter is small, and the purified water is stored in the purified water storage tank, and the purified water is discharged if necessary, and the purified water storage tank (refer to the pressure tank) is used. When the purified water is filled to the set level, the pressure can automatically block the inflow of raw water to the water filter.

Automatic shut-off valve for water purification system according to an embodiment of the present invention, including a sediment filter, pre-carbon filter, reverse osmosis membrane filter and post carbon filter, for the water purification system including a water purification tank for storing purified water In the automatic shutoff valve,

A first housing having a raw water inlet through which raw water discharged from the sediment filter is introduced, and a raw water outlet through which raw water flowing into the free carbon filter is discharged;

A purified water inlet through which the purified water discharged from the post carbon filter flows in, and a purified water outlet through which the purified water flows into the purified water storage tank are formed, and a stopper having a rib shape (@) is formed in the space where the purified water inlet and the purified water outlet communicate with each other. The second housing,

The first diaphragm is installed in close contact between the first housing and the second housing, and the first diaphragm for opening and closing the raw water inlet and the raw water outlet, and the first diaphragm interlocked with each other when the first diaphragm is elastically deformed by the pressure formed in the first housing. And a third housing in which a valve composed of a second diaphragm and a plunger installed between the first and second diaphragms and shifted by a pressure difference applied to the first and second diaphragms is installed.

If the raw water side pressure formed inside the first housing is higher than the purified water side pressure formed inside the second housing, pressurize the valve to the purified water side to open the raw water inlet, and if the purified water pressure is higher than the raw water side pressure, move the valve to the raw water side. Pressurize to close the feed inlet.

Water purification, automatic shutoff valve, raw water, reverse osmosis membrane filter

Description

Automatic shut off valve of puring water system

1 is a schematic diagram of a water purification system using a reverse osmosis membrane filter,

2 is an exploded perspective view of an automatic shutoff valve for a water purification system according to an embodiment of the present invention;

3 is a side cross-sectional view of an automatic shutoff valve for a water purification system according to an embodiment of the present invention;

4 is a cross-sectional view taken along the line A-A shown in FIG.

5 is a plan view of a housing connected to the purified water storage tank in the automatic shutoff valve for the purified water system according to an embodiment of the present invention;

6 is a cross-sectional view taken along line B-B shown in FIG. 5;

7 is a cross-sectional view taken along the line C-C shown in FIG.

8 is a view for explaining the opening of the raw water inlet in the automatic shutoff valve for water purification system according to an embodiment of the present invention,

9 is a state diagram used for automatic shutoff valve for water purification system according to an embodiment of the present invention.

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

One; Sediment filter

2; Free Carbon Filter

3; Reverse osmosis membrane filter

4; Post Carbon Filter

6; Water purification tank

10; Raw water inlet

11; Raw water outlet

12; First housing

13; Water purification inlet

14; Water purification outlet

15; Space

16; stopper

17; Second Housing

18; First diaphragm

19; 2nd diaphragm

20; plunger

21; valve

22; Third Housing

24; Bracket

The present invention is a water purification system using a reverse osmosis membrane filter, the purified water discharged by the use of reverse osmosis membrane filter is stored in the purified water storage tank, so that the purified water from the purified water storage tank can be used if necessary. An automatic shutoff valve for a water purification system.

More specifically, when the purified water is filled to the water level set in the purified water storage tank (pressure tank), the automatic shut off valve for the water purification system can automatically block the inflow of raw water to the purified water filter due to the pressure. valve).

As shown in Figure 1, the water purification system using a reverse osmosis membrane filter, non-woven fabric containing rust, soil, sand, suspended solids contained in raw water (tap water, ground water) flowing through a hose connected to the tap (not shown). Sediment filter (1) for removing foreign matter of micron size by

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

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

It comprises a post-carbon filter (4) for improving the taste of the water by treating the foreign matter, such as the smell of water, gas components.

The wastewater (condensed water) filtered out by the above-mentioned reverse osmosis membrane filter 3 during the purification process is discharged to a designated place via a flow restrictor 8.

In the drawings, reference numeral 5 denotes an automatic shutoff valve that automatically blocks the inflow of raw water to the water filter when the pressure set according to the water level of the purified water filled in the purified water storage tank 6 is reached. The check valve prevents the back flow of water when the pressure of) reaches the set pressure.

The above-mentioned automatic shut-off valve 5 has a very small amount of purified water discharge due to the use of the reverse osmosis membrane filter 3 (for example, the ratio of purified water and concentrated water is 1: 4), and the purified purified water is stored in the purified water storage tank 6. After storage, it is used to discharge a predetermined amount of purified water from the purified water storage tank 6, if necessary.

The diaphragm (not shown) installed inside the automatic shut-off valve 5 of the prior art has a difference between the raw water side pressure flowing through the sediment filter 1 and the water pressure side filled in the purified water storage tank 6. Elastic deformation. That is, when the pressure on the water side of the purified water storage tank 6 is relatively higher than the pressure on the raw water side passing through the sediment filter 1 (the purified water storage tank 6 is filled with a constant water level), the diaphragm is Since the elastic inlet toward the raw water inlet to close the raw water inlet, the raw water inlet for the water filter is blocked.

On the contrary, as the purified water is discharged and used from the purified water storage tank 6, the purified water side pressure drops. That is, when the raw water side pressure is relatively higher than the water pressure side, the diaphragm is returned to the initial position and the raw water inlet side is opened so that raw water can be introduced into the water filter.

At this time, when the diaphragm described above is excessively elastically deformed, and the elasticity of the diaphragm does not return smoothly, the inherent function of the automatic shut-off valve is reduced, and durability is reduced due to repeated operation of the diaphragm. Problems arise.

In view of this, when the reinforcing material such as non-woven fabric in the diaphragm to increase the durability of the diaphragm described above, the cost and manufacturing cost is increased due to the increase in the number of parts and manufacturing process. This has a problem that the price competitiveness of the product in the art is inferior.

Embodiment of the present invention, excessive elastic deformation of the components (for example, the diaphragm) in the automatic shut-off valve to automatically block the inflow of raw water to the water filter at the pressure according to the water level filled in the purified water storage tank The present invention relates to an automatic shut-off valve for a water purification system, which prevents the diaphragm from returning and prevents degradation of durability.

According to an embodiment of the present invention, when the diaphragm is elastically deformed and contacts the curved stopper having a curved shape, the diaphragm prevents pressure loss by minimizing the mutual contact area of the stopper and the diaphragm, and the diaphragm is caught in the gap of the stopper. It also relates to automatic shut-off valves for water purification systems, which can prevent damage from cracks.

Embodiment of the present invention is related to the automatic shut-off valve for the water purification system to reduce the cost and manufacturing cost is unnecessary to use a separate reinforcing member to increase the durability of the diaphragm in the automatic shut-off valve.

Embodiments of the present invention relate to an automatic shutoff valve for a water purification system that enables improved valve inherent functionality due to smooth operation of the diaphragm inherent in the automatic shutoff valve.

Automatic shut-off valve for water purification system according to an embodiment of the present invention, including a sediment filter, pre-carbon filter, reverse osmosis membrane filter and post carbon filter, for the water purification system including a water purification tank for storing purified water In the automatic shutoff valve,

A first housing having a raw water inlet through which raw water discharged from the sediment filter is introduced, and a raw water outlet through which raw water flowing into the free carbon filter is discharged;

A purified water inlet through which the purified water discharged from the post carbon filter flows in, and a purified water outlet through which the purified water flows into the purified water storage tank are formed, and a stopper having a rib shape (@) is formed in the space where the purified water inlet and the purified water outlet communicate with each other. The second housing,

The first diaphragm is installed in close contact between the first housing and the second housing, and the first diaphragm for opening and closing the raw water inlet and the raw water outlet, and the first diaphragm interlocked with each other when the first diaphragm is elastically deformed by the pressure formed in the first housing. And a third housing in which a valve composed of a second diaphragm and a plunger installed between the first and second diaphragms and shifted by a pressure difference applied to the first and second diaphragms is installed.

If the raw water side pressure formed inside the first housing is higher than the purified water side pressure formed inside the second housing, pressurize the valve to the purified water side to open the raw water inlet, and if the purified water pressure is higher than the raw water side pressure, move the valve to the raw water side. Pressurize to close the feed inlet.

According to a preferred embodiment, the end portion of the stopper described above is curved to have a wedge shape to reduce the contact area between the stopper and the second diaphragm and prevent breakage of the second diaphragm during elastic deformation of the second diaphragm.

It further comprises a bracket formed on the outer surface of at least one of the above-described first, second, third housing to fix the automatic shut-off valve to the fixed surface (wall surface).

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art to which the present invention pertains can easily implement the present invention. It does not mean that the technical spirit and scope of the present invention are limited.

As shown in Figure 2 to 9, the automatic shut-off valve for the water purification system according to an embodiment of the present invention, the sediment filter (1), precarbon filter (2), reverse osmosis membrane filter (3) and post carbon filter An automatic shut-off valve for a water purification system, comprising: (4), and including a purified water storage tank 6 (referring to a pressure tank) for storing purified water to be purified.

A first housing 12 having a raw water inlet 10 through which raw water discharged from the sediment filter 1 flows, a raw water outlet 11 through which raw water flowing into the precarbon filter 2 is discharged, and

A purified water inlet 13 through which the purified purified water discharged from the post carbon filter 4 flows in, and a purified water outlet 14 through which the purified water flowing into the purified water storage tank 6 is discharged, are purified water inlets 13. And a second housing 17 in which a stopper 16 having a rib-shaped (@) shape is formed in the space portion 15 through which the water purifying outlet 14 communicates.

It is installed in close contact between the first housing 12 and the second housing 17, the first diaphragm 18 for opening and closing the raw water inlet 10 and the raw water outlet 11, and inside the first housing 12 When the first diaphragm 18 is elastically deformed by the pressure generated, it is interposed between the second diaphragm 19 and the first diaphragm 18 and 19 contacting the stopper 16, and the first diaphragm 18 Including a third housing 22 in which a valve 21 composed of a plunger 20 shifted by a pressure difference applied to the programs 18 and 19 is installed.

When the raw water side pressure formed in the first housing 12 is higher than the water side pressure formed in the second housing 17 (for example, the purified water storage tank 6 through a water purification outlet (faucet, etc.)). To discharge the purified water of the water). The valve 21 is pressurized to the purified water side to open the raw water inlet 10, and the purified water pressure formed inside the second housing 17 is inside the first housing 12. When the pressure is higher than the raw water side pressure (for example, the state where the purified water is filled in the purified water storage tank 6 by the set water level) is to press the valve 21 to the raw water side to close the raw water inlet (10).

At this time, the end portion of the stopper 16 described above is curved to have a U-shape, so as to minimize the mutual contact area between the stopper 16 and the second diaphragm 19 during elastic deformation of the second diaphragm 19. It can be prevented from being prevented, and the second diaphragm 19 can be prevented from being broken (eg, broken due to cracking) when caught in the gap of the stopper 16.

Wing-shaped formed on the outer surface of at least one of the above-described first, second, third housings (12, 17, 22) to fix the automatic shut-off valve 5 to the fixed surface (for example, wall) It further includes a bracket (23).

The above-mentioned automatic shut-off valve 5 is preferably installed downstream of the sediment filter 1 so as to prevent failure or breakage due to the inflow of foreign substances contained in the raw water.

In the drawing, reference numeral 24 denotes an O-ring installed in the seating groove of the third housing 22 and preventing leakage of raw water through the contact surface between the first and third housings 12 and 22.

Hereinafter, with reference to the accompanying drawings an example of the use of the automatic shut-off valve for water purification system according to an embodiment of the present invention.

As shown in FIG. 9, raw water supplied from a raw water supply source is a sediment filter (1)-raw water side passage of the automatic shutoff valve (5)-precarbon filter (2)-reverse osmosis membrane filter (3)-post carbon filter ( Purification is carried out via 4) in turn. The purified water is stored in the purified water storage tank 6 via the purified water side passage of the automatic shutoff valve 5.

At this time, due to the use of the reverse osmosis membrane filter (3) is very small water discharge (generally the ratio of purified water and concentrated water is 1: 4) to store the purified water in the purified water storage tank (6). The wastewater filtered by the reverse osmosis membrane filter 3 is discharged to a predetermined place.

As shown in FIG. 8, the raw water discharged from the sediment filter 1 flows into the raw water inlet 10 formed in the first housing 12 of the automatic shutoff valve 5. At this time, the raw water side pressure formed at the raw water inlet 10 is relatively higher than the pressure formed at the purified water outlet 14 of the second housing 17 communicating with the purified water storage tank 6 (into the purified water storage tank 6). Stored water is less than the set amount). Thus, the valve 21 installed in the third housing 22 is shifted toward the second housing 17 side.

That is, as the valve 21 is pressurized by the raw water pressure flowing into the raw water inlet 10, the first diaphragm 18 is elastically deformed toward the second housing 17 to feed the raw water inlet 10 and the raw water outlet 11. To open. As a result, the raw water passing through the sediment filter 1 may be supplied to the precarbon filter 2 through the open raw water inlet 10.

At this time, when the elastic deformation of the first diaphragm 18, the second diaphragm 19 elastically deformed by the shifting of the plunger 20 is a rib (@) formed in the space portion 15 of the second housing 17 The stopper 16 is in contact with the shape. As a result, excessive elastic deformation of the second diaphragm 19 can be prevented and durability can be prevented from being lowered.

When the second diaphragm 19 elastically deformed by the above-described shifting of the plunger 20 comes into contact with the stopper 16, the end shape of the stopper 16 is curved to have a wedge shape, so that the stopper 16 ) To prevent pressure loss by minimizing the contact area between the second diaphragm 18 and the second diaphragm 18 even when the second diaphragm 18 is caught in the gap of the stopper 16. have.

As shown in FIG. 4, the purified water outlet (for example, a faucet, etc.) is blocked to increase the amount of purified water filled and purified by the purified water storage tank 6 so that the purified water pressure is relatively higher than the raw water pressure. In this case, the valve 21 is shifted toward the first housing 12 by the pressure formed at the purified water outlet 14 of the second housing 17. That is, since the elastically deformed bottom surface of the second diaphragm 19 is pressed by the constant pressure filled in the space 15 of the second housing 17, the plunger 20 is shifted toward the first housing 12. Let's do it.

At this time, as the above-described stopper 16 is formed in a corrugated (@) shape, the bottom surface of the elastically deformed second diaphragm 19 may be uniformly pressed. This allows the elastically deformed second diaphragm 19 to be smoothly returned to the initial position. That is, in order to increase the durability of the second diaphragm 19 to be interlocked by repeatedly opening and closing the purified water outlet, it is not necessary to install a separate reinforcing material.

Therefore, since the second diaphragm 19 is returned to the initial position by the positive pressure (hydraulic pressure) formed in the space portion 15 of the second housing 17 and its own elastic force, the first diaphragm 18 This is linked to close the raw water inlet 10 and the raw water outlet 11 of the first housing 12.

As a result, the raw water passing through the sediment filter 1 described above is blocked from flowing into the automatic shutoff valve 5.

As described above, when the purified water discharge port is opened by the user to discharge the purified water from the purified water storage tank 6 (when the purified water pressure is relatively lower than the raw water pressure), the automatic shutoff valve 5 The raw water inlet 10 is opened to supply raw water to the water filter side. On the other hand, when the purified water outlet is shut off and the purified water side pressure is relatively higher than the raw water side pressure, the raw water inlet 10 is closed by the automatic shutoff valve 5 to block raw water inflow. That is, the purified water discharged by the reverse osmosis membrane filter 3 is less, and the automatic shutoff valve 5 repeats the inflow or blocking of raw water according to the opening and closing of the purified water outlet.

Water purification system according to an embodiment of the present invention can be applied to bidet, water purifier, ionizer, cold water and hot water purifier, refrigerator, other functional water producer.

As described above, the automatic shutoff valve for the water purification system according to the embodiment of the present invention has the following advantages.

It is possible to extend the service life of the diaphragm by preventing excessive return of the diaphragm due to excessive elastic deformation of the diaphragm installed in the automatic shutoff valve and preventing the durability from being lowered.

In addition, when the diaphragm is elastically deformed and comes into contact with the curved stopper having a curved shape, pressure loss is prevented by minimizing the mutual contact area of the stopper and the diaphragm, and cracks are generated even when the diaphragm is caught in the gap of the stopper. Can be prevented from being damaged.

In addition, there is no need to use a separate reinforcing member to increase the durability of the diaphragm inherent in the automatic shutoff valve, thereby reducing the cost and manufacturing cost, thereby having a competitive price.

In addition, due to the smooth operation of the diaphragm inherent in the automatic shut-off valve to improve the functionality has a reliability for the product.

Claims (3)

In an automatic shut-off valve for a water purification system comprising a sediment filter, a precarbon filter, a reverse osmosis membrane filter and a post carbon filter, and a purified water storage tank for storing purified water: A first housing having a raw water inlet through which raw water discharged from the sediment filter flows and a raw water outlet through which raw water flowing into the precarbon filter is discharged; A purified water inlet through which the purified water discharged from the post carbon filter is introduced, and a purified water outlet through which the purified water flowing into the purified water storage tank is discharged, and a stopper having a rib-shaped (@) shape in a space where the purified water inlet and the purified water outlet communicate with each other. The second housing is formed; And It is installed in close contact between the first housing and the second housing, the first diaphragm for opening and closing the raw water inlet and the raw water outlet and the first diaphragm is interlocked when elastically deformed the first diaphragm by the pressure formed inside the first housing to contact the stopper And a third housing in which a valve comprising a second diaphragm to be formed and a plunger installed between the first and second diaphragms and shifted by a pressure difference applied to the first and second diaphragms is installed. When the raw water side pressure formed inside the first housing is higher than the purified water side pressure formed inside the second housing, the valve is pressurized to the purified water side to open the raw water inlet, and the valve when the purified water pressure is higher than the raw water side pressure Automatic shut-off valve for water purification system, characterized in that to close the raw water inlet by pressing to the raw water side. The method of claim 1, wherein the end portion of the stopper is curved to have a U-shape to reduce the contact area between the stopper and the second diaphragm when the elastic deformation of the second diaphragm and to prevent damage to the second diaphragm Automatic shutoff valve for the system. The automatic shutoff valve according to claim 1, further comprising a bracket formed on an outer surface of at least one of the first, second and third housings to fix the automatic shutoff valve to the fixed surface.

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