KR20240032621A - Filter for controlling pH and water purifier having the same - Google Patents

Abstract

A pH control filter is disclosed. A pH control filter according to one aspect of the present invention includes a water-permeable filter with a hollow formed from one end to the other in the center of the cross-section; a lower stopper that closes the lower end of the water-permeable filter; It is inserted into the hollow of the water-permeable filter, forming an internal space filled with control particles for controlling the pH of purified water, and purified water passing through the water-permeable filter passes through the inlet and the control particles flowing into the internal space. It may include a filling portion in which an outlet through which purified water whose pH is adjusted flows out is formed.

Description

pH controlling filter and water purifier including the same {Filter for controlling pH and water purifier having the same}

The present invention relates to a pH control filter and a water purifier including the same. More specifically, it relates to a pH control filter capable of controlling the pH of filtered purified water and a water purifier including the same.

As environmental pollution increases and interest in health increases, the use of water purifiers is increasing. Depending on the type of raw water supply, these water purifiers include a direct connection type that connects directly to the faucet, and a storage type that puts water in a container and passes it through a filter. Depending on the water purification method, there are natural filtration type, direct filtration type, ion exchange resin type, and distillation type. There is a reverse osmosis type, etc.

Meanwhile, among water purification methods, reverse osmosis is a method of purifying water using the reverse osmosis phenomenon. It uses a semi-permeable membrane with very fine pores, and has the advantage of excellent ability to remove fine substances such as heavy metals and contaminants. .

Taking advantage of these characteristics, it is mainly used in areas where the raw water supplied contains a lot of limestone or where highly contaminated groundwater is used.

On the other hand, the reverse osmosis method filters only pure water by filtering out even the minerals contained in the water. During the filtration process, all ions contained in the water are removed. As the ions are removed, the carbon dioxide contained in the water combines with the water, increasing the pH of the water. It may drop to the level of 5.5 to 6.5 and become slightly acidic.

However, the recommended pH standard for drinking water in some countries is 6.5 to 8.5, so there is a problem that the pH of drinking water filtered through reverse osmosis may deviate from the recommended drinking water standard in some countries.

Korean Public Utility Model No. 20-2009-0000099 relates to a water purification device using water purification balls, which filters raw water by supplying it to a filter equipped with a plurality of water purification balls, and is equipped with a flow control valve that can control the pH of the purified water. , When the filter is not used for the water purification function, all raw water inside the filter is discharged. The water purification balls are used only when used for the water purification function, and are used to prevent the water purification balls from settling in the raw water when discontinued, thereby prolonging the lifespan. An improved water purification device has been disclosed.

However, this means that an additional valve is added to the water purification filter, which causes an increase in cost, and does not solve the problem of excessive pH adjustment components being eluted into the water purification ball when the water purification filter is initially used.

Korean Patent Publication No. 10-0688332 is an invention regarding a separation membrane module for a water purifier filter, which includes a separation membrane for primary filtration of liquid, a carbon block for secondary filtration of the liquid primarily filtered by the separation membrane, and secondary filtration on the carbon block. A separation membrane module equipped with a filling part inserted into the inside of a carbon block for tertiary filtration of the filtered liquid has been disclosed, and a structure that can be simply assembled without using an adhesive has been disclosed. However, the pH of the filtered purified water is There is a problem in that it does not play a role in regulating it to meet drinking water standards.

In addition, Korean Patent No. 10-2495577 is an invention related to a filter for a water purifier, which consists of a filter housing, a functional filter, and the functional filter to treat water purification by dualizing the fluid movement path through which incoming raw water flows and arranging multi-stage water purification filters. A structure has been disclosed that consists of a water purification filter that filters the bypassing raw water and improves the initial excessive elution of the charge from the functional filters arranged in a row in the filter housing. However, this causes the filter module structure to become complicated. There is a problem that causes an increase in manufacturing costs.

Korea Public Utility Model No. 20-2009-0000099 Korean Patent Publication No. 10-0688332 Korean Patent No. 10-2495577

The present invention is to solve the above problems, and the object of the present invention is to provide a pH control filter capable of adjusting the pH of purified water filtered by reverse osmosis so that it falls within the recommended drinking water pH range, and a water purifier including the same. The task is to do it.

The task of the pH control filter according to an embodiment of the present invention is to provide a pH control filter that has a simple structure, allows pH control, is easy to manufacture, and is inexpensive to manufacture, and a water purifier including the same.

The pH control filter according to an embodiment of the present invention is a pH control filter that can quickly enter the recommended drinking water pH range from the beginning of filter use by controlling pH control particles that are excessively eluted at the beginning of use, and a pH control filter containing the same. The challenge is to provide water purifiers.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one aspect of the present invention, a water permeable filter having a hollow formed from one end to the other end in the center of the cross section; a lower stopper that closes the lower end of the water-permeable filter; a filling portion that is inserted into the hollow of the water permeable filter to form an inner space, and has an inlet through which purified water passing through the water permeable filter flows into the inner space, and an outlet through which purified water passing through the inner space flows out; Control particles filled in the inner space of the filling part so that the pH of the purified water passing through the inner space of the filling part is adjusted, and containing OH group generating particles provided to supplement OH groups in the purified water passing through the inner space; A pH-adjusted water purification filter is disclosed, which is characterized in that:

The OH group generating particles may be ceramic balls containing magnesium or potassium.

The control particle may further include a cation exchange resin that replenishes positive ions in purified water penetrating the inner space of the filling unit.

The cation exchange resin may include at least one of H+ form or Na+ form.

The control particles may be filled between 30% and 80% of the internal space volume of the filling unit.

The filling part is disposed in the hollow of the filter to form the internal space, the lower surface facing the lower stopper is closed, and a plurality of slits are formed on the side facing the inner peripheral surface of the hollow to be open, and the interior The upper surface may be open so that purified water in the space is discharged to the upper hollow side of the water-permeable filter.

The filling part is disposed in the hollow of the filter to form the internal space, the lower surface facing the lower stopper is open to allow purified water to flow into the internal space, and the side facing the inner peripheral surface of the hollow is closed, The upper surface may be open so that purified water in the internal space is discharged to the upper hollow side of the water-permeable filter.

The filling part is disposed in the hollow of the filter to form the inner space, and the lower surface facing the lower stopper and the side facing the inner peripheral surface of the hollow are open to allow purified water to flow into the inner space, and the inner space The upper surface may be open so that purified water inside is discharged to the upper hollow side of the water permeable filter.

According to another aspect of the present invention, a reverse osmosis filter for filtering raw water; A pH control water filter installed at the rear of the reverse osmosis filter to adjust the pH of the purified water filtered through the reverse osmosis filter, wherein the pH control water filter has a hollow formed from one end to the other in the center of the cross section. permeable filter; a lower stopper that closes the lower end of the water-permeable filter; a filling portion that is inserted into the hollow of the water permeable filter to form an inner space, and has an inlet through which purified water passing through the water permeable filter flows into the inner space, and an outlet through which purified water passing through the inner space flows out; A water purifier that is filled in the inner space of the filling part so that the pH of the purified water passing through the inner space of the filling part is adjusted, and that includes control particles containing OH group generating particles that are provided to supplement OH groups in the purified water passing through the inner space. is initiated.

A water outlet nozzle through which purified water whose pH is adjusted is discharged from the pH-adjusted water filter; It may include a water outlet passage that guides the purified water that has passed through the pH adjustment water filter to the water outlet nozzle.

Alternatively, a purified water tank in which purified water whose pH has been adjusted by the pH-adjusted water filter is stored; It may include a water purification guide passage that guides the purified water that has passed through the pH adjustment water filter to the purified water tank.

According to the above configuration, the pH adjustment filter according to the present invention and the water purifier including the same have the effect of adjusting the pH of the testes filtered in the reverse osmosis filter to reach the recommended drinking water standard range.

The pH control filter according to an embodiment of the present invention and the water purifier containing the same contain not only OH group generating particles but also cation exchange resin as control particles that control the pH of purified water, and purified water that falls within the pH range of recommended drinking water standards from the beginning of filter use. can be provided quickly.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a diagram illustrating a pH adjustment filter according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a pH adjustment filter according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of a pH adjustment filter according to another embodiment of the present invention.
Figure 4 is a cross-sectional view of a pH adjustment filter according to another embodiment of the present invention.
Figure 5 is a graph measuring the pH of purified water that passed only the water permeable filter in the absence of control particles by water flow rate.
Figure 6 is a graph measuring the pH of purified water that has passed through the permeable filter and the OH group generating particles by the water flow rate, with only OH group generating particles included among the control particles when the vertical length of the permeable filter is 8 inches. am.
Figure 7 shows the pH of the purified water that passed through the water-permeable filter and the OH group-generating particles in the state of including OH group-generating particles and cation exchange resin as control particles when the vertical length of the water-permeable filter is 14 inches. This is a graph measured by stars.
Figure 8 shows the pH of the purified water that passed through the water-permeable filter and the OH group-generating particles in the state of including OH group-generating particles and cation exchange resin as control particles when the vertical length of the water-permeable filter is 11 inches. This is a graph measured by stars.
Figure 9 shows the pH change according to the amount of water passed through raw water, purified water that has passed through a reverse osmosis filter, and purified water that has passed through the adjustment particles when the vertical length of the water permeable filter is 11 inches and only OH group generating particles are included as control particles. This is one graph.
Figure 10 is a graph showing the change in pH according to the amount of purified water passing through the control particles when the vertical length of the water permeable filter is 11 inches and OH group generating particles and cation exchange resin are included as control particles.
Figure 11 is a diagram showing the configuration of a direct water water purifier equipped with a pH adjustment filter according to another embodiment of the present invention.
Figure 12 is a diagram showing the configuration of a direct water purifier equipped with a pH adjustment filter according to another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, parts not related to the description have been omitted in the drawings, and identical or similar components are given the same reference numerals throughout the specification.

The words and terms used in this specification and claims are not to be construed as limited in their usual or dictionary meanings, but according to the principle that the inventor can define terms and concepts in order to explain his or her invention in the best way. It must be interpreted with meaning and concepts consistent with technical ideas.

Therefore, the embodiments described in this specification and the configuration shown in the drawings correspond to a preferred embodiment of the present invention, and do not represent the entire technical idea of the present invention, so the configuration may be replaced by various alternatives at the time of filing of the present invention. There may be equivalents and variations.

In this specification, terms such as “comprise” or “have” are intended to describe the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to describe the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

A component being “in front,” “rear,” “above,” or “below” another component means that it is in direct contact with the other component, unless there are special circumstances. This includes not only those placed at the “bottom” but also cases where another component is placed in the middle. In addition, the fact that a component is "connected" to another component includes not only being directly connected to each other, but also indirectly connected to each other, unless there are special circumstances.

Hereinafter, a pH adjustment filter according to an embodiment of the present invention will be described with reference to the drawings.

Figure 1 is an exploded perspective view showing a pH adjustment filter according to an embodiment of the present invention.

The pH adjustment filter 100 according to an embodiment of the present invention is used in a reverse osmosis (RO, Reverse Osmosis) type water purifier, on the downstream side of the reverse osmosis filter in the flow of purified water so that the filtered purified water flows through the reverse osmosis filter. can be installed in

The reverse osmosis filter filters only pure water by filtering out the minerals contained in the water. During the filtration process, all ions contained in the water are removed. As the ions are removed, the carbon dioxide contained in the water combines with the water, raising the pH of the water to 5.5. It may drop to ~6.5 level and become slightly acidic.

As shown in Figures 1 and 2, the pH control filter 100 according to an embodiment of the present invention includes a water permeable filter 110, a lower stopper 130, a filling part 120, and an adjustment particle 140. may include.

The water permeable filter 110 is formed in a cylindrical shape, and a hollow 112 may be formed in the center of the cross section from one end to the other end in the longitudinal direction. The water-permeable filter 110 may be made of a water-permeable material that filters water while passing through it. In an embodiment of the present invention, the water permeable filter 110 may be made of a carbon block containing sintered carbon particles or a sponge containing carbon particles. Of course, the present invention is not limited to this, and any material or form may be used as long as water can be filtered.

The lower stopper 130 is a stopper that closes the lower end of the water-permeable filter 110, and may be made of a material such as plastic.

The lower stopper 130 may be formed to block both the lower end of the water-permeable filter 110 and the lower end of the hollow 112.

Meanwhile, a filling part 120 may be inserted into the hollow 112 of the water permeable filter 110.

The filling part 120 is inserted into the hollow 112 of the water permeable filter 110, and an internal space 128 is formed in which control particles 140 for controlling the pH of purified water are filled, and the water permeability An inlet 122 through which purified water passing through the filter 110 flows into the internal space 128 of the filling part 120 and an outlet 126 through which purified water whose pH is adjusted through the particles flows out may be formed. .

In an embodiment of the present invention, the inlet 122 is formed at the lower end of the filling part 120, and the outlet 126 is formed at the upper end of the filling part 120.

In addition, the outlet 126 of the filling part 120 will be described by taking as an example that it is located at the top of the water-permeable filter 110.

Additionally, the filling portion 120 may have a length shorter than the length of the hollow 112 of the water permeable filter 110. Accordingly, an empty space that is not filled with the filling part 120 may be formed on the lower side of the hollow 112 of the filling part 120.

Since the lower stopper 130 is installed at the bottom of the water-permeable filter 110 and the filling part 120 is installed at the top of the water-permeable filter 110, the water flowing into the water-permeable filter 110 Purified water does not flow directly into the hollow 112 of the water permeable filter 110, but flows into the hollow 112 of the water permeable filter 110 through the circumference of the water permeable filter 110.

In addition, the pH of the purified water flowing into the hollow 112 can be adjusted as it passes through the control particle 140 of the filling part 120 through the inlet 122 formed at the bottom of the filling part 120. .

In addition, purified water whose pH has been adjusted while passing through the control particles 140 may be discharged through the outlet 126 formed at the top of the filling part 120.

Of course, as shown in FIG. 3, the inlet 122 may not be formed at the bottom of the filling part 120, but may be formed as a side hole 124 formed on the peripheral side of the filling part 120.

That is, the water that has passed through the permeable filter 110 flows into the internal space 128 of the filling part 120 through the side hole 124 of the filling part 120, thereby forming the control particles 140. After the pH is adjusted as it passes, it can be discharged through the outlet 126.

Alternatively, as shown in FIG. 4, an inlet 122 may be formed at the bottom of the filling part 120, and a side hole 124 may be formed on the peripheral side.

That is, the water that has passed through the permeable filter 110 flows into the internal space 128 of the filling part 120 through the side hole 124 and the inlet 122 at the bottom of the filling part 120. After the pH is adjusted while passing through the control particles 140, it can be discharged through the outlet 126.

The control particle 140 is a particle that controls the pH of purified water flowing around, and may be an OH group generating particle 142.

In other words, the pH of the purified water that has passed through the reverse osmosis filter is in a state where all ions contained in the water are filtered out due to the filtration method of the reverse osmosis filter, and the pH of the purified water is lowered by supplementing OH groups in the water whose pH has dropped. It is to make them do it.

At this time, the OH group generating particles 142 may be ceramic balls containing magnesium or potassium.

Meanwhile, when the OH group generating particles 142 are initially used, OH groups are generated in excessive amounts, and the pH of the purified water passing through the filling unit 120 may exceed the recommended range.

Of course, this may vary depending on the filling amount of the OH group generating particles 142 or the magnesium content concentration of the ceramic ball containing magnesium or potassium used as the OH group generating particles 142.

However, since the OH group replenishment ability of the OH group generating particles 142 must be maintained until the life of the water permeable filter 110 ends, a problem may occur in which the amount of OH group replenishment becomes excessive during initial use of the filter.

In order to compensate for this, the control particles 140 filled in the filling unit 120 may include a cation exchange resin 144.

The cation exchange resin 144 can suppress excessive rise in pH by neutralizing excess OH groups replenished from the OH group generating particles 142 by supplementing positive ions to the permeated purified water.

The cation exchange resin 144 may include at least one of H+ form or Na+ form.

At this time, the amount of cations replenished from the cation exchange resin 144 may be less than the OH group replenished from the OH group generating particles 142.

In other words, the cations replenished from the cation exchange resin 144 neutralize a portion of the OH groups replenished from the OH group generating particles 142.

Additionally, the lifespan of the cation exchange resin 144 may be shorter than that of the OH group generating particles 142.

This is because an excessive amount of OH groups replenished from the OH group generating particles 142 is secreted at the beginning of use, but the amount of OH groups generated decreases as time of use passes.

That is, the cation exchange resin 144 neutralizes the excessive amount of OH groups generated from the OH group generating particles 142 upon initial use.

In addition, the control particles 140 filled in the filling part 120 may be filled between 30% and 80% of the volume of the internal space 128 of the filling part 120.

This means that when the control particles 140 are excessively filled in the filling part 120, a channeling phenomenon occurs in which a fixed passage is formed between the particles as the fluid flows, so that the control particles filled in the filling part 120 This is because only some of the control particles 140 may come into contact with water and be unevenly consumed.

Therefore, by filling the control particles 140 to 30% to 80% of the volume of the internal space 128 of the filling part 120, the purified water flowing through the internal space 128 of the filling part 120 is As the control particles 140 flow within the filling unit 120, the control particles 140 are suspended by the flowing water and can be brought into sufficient contact with the control particles 140.

Figure 5 is a graph measuring the pH of purified water that has passed through only the water-permeable filter 110 when the vertical length of the water-permeable filter 110 is 14 inches in the absence of the control particles 140 by water flow rate.

As shown in FIG. 5, the purified water that passes through the reverse osmosis filter and only the water permeable filter 110 in the absence of the OH group generating particles and the cation exchange resin 144 shows a pH of 6.0 to 6.5, which is recommended. It can be seen that the pH is below the range of 6.5 to 8.5.

Figure 6 shows the water permeable filter 110 and the OH group generation in a state where the vertical length of the water permeable filter 110 is 8 inches and only the OH group generating particles 142 are included among the control particles 140. This is a graph measuring the pH of purified water that passed through the particles 142 for each number of passes.

As can be seen in FIG. 6, the pH of the purified water passing through the water permeable filter 110 and the OH group control particles 140 satisfies the recommended pH range of 6.5 to 8.5 from a water flow rate of about 400 L, It can be seen that the pH value is stable at around 7 starting from a cumulative water flow volume of about 1500L.

Figure 7 shows the water permeable filter (110) in a state where the vertical length of the water permeable filter 110 is 14 inches, and the control particles 140 contain both OH group generating particles 142 and cation exchange resin 144. This is a graph measuring the pH of purified water that passed through 110) and control particles 140 by water flow rate.

As can be seen in FIG. 7, the pH of the purified water that has passed through the water permeable filter 110, the OH group control particles 140, and the cation exchange resin 144 is the control particles shown in FIG. 6 ( 140), it can be seen that compared to when only OH group generating particles 142 are included, it enters the recommended pH range at a faster time and stabilizes around 7.5, which is the middle value of the recommended pH range.

Figure 8 shows the water permeable filter (110) in a state where the vertical length of the water permeable filter 110 is 11 inches, and the control particles 140 contain both OH group generating particles 142 and cation exchange resin 144. This is a graph measuring the pH of purified water that passed through 110) and control particles 140 by water flow rate.

As can be seen in FIG. 8, the pH of the purified water that has passed through the water permeable filter 110, the OH group control particles 140, and the cation exchange resin 144 is the control particles shown in FIG. 6 ( 140), it can be seen that compared to when only OH group generating particles (142) are included, it enters the recommended pH range at a faster time and stabilizes around 7 to 7.5, which is the middle value of the recommended pH range. there is.

Figure 9 shows that when the water permeable filter 110 has a vertical length of 11 inches and only OH group generating particles 142 are included in the control particles 140, raw water (tap water) and purified water that has passed through a reverse osmosis filter ( This is a graph showing the change in pH according to the amount of purified water passed through RO) and control particles 140.

As can be seen in Figure 9, the pH of the raw water before being purified is about 7.5, and the pH of the purified water after passing the reverse osmosis filter is around 6, and only the OH group generating particles 142 are used as the control particles 140. The pH of purified water continues to decline from pH 10, but reaches the recommended standard range of pH 6.5 to 8.5 after about 1,800 L of water flow.

Figure 10 shows the control particles 140 when the vertical length of the water permeable filter 110 is 11 inches and the control particles 140 include OH group generating particles 142 and cation exchange resin 144. This is a graph showing the change in pH according to the amount of water passed through the purified water.

When compared with the pH change of purified water that has undergone only the OH group generating particles 142 as the control particles 140 in FIG. 9, as the control particles 140, the OH group generating particles 142 and the cation exchange resin 144 When included, the pH drops sharply from 9 and reaches the recommended standard range of pH 6.5 to 8.5 when the water flow volume reaches about 500L. Afterwards, it tends to stabilize, reaching the recommended standard range more quickly, and even thereafter. It can be seen that the pH of the purified water maintains the recommended standards.

Figure 11 is a configuration diagram of a water purifier including a pH-adjusting water purification filter according to another embodiment of the present invention.

Referring to FIG. 11, a water purifier 200 including a pH-adjustable water filter according to another embodiment of the present invention may include a filter unit 201, a pump 230, and a water outlet nozzle 250.

The water purifier 200 according to this embodiment may be a direct water purifier that directly extracts purified water filtered through the filter unit 201 without storing it.

The filter unit 201 may include a pretreatment filter 210, a reverse osmosis filter 220, and a pH adjustment water purification filter 100.

The pre-treatment filter 210 may be a filter that removes organic compounds and residual chlorine contained in raw water or filters large-sized foreign substances.

The reverse osmosis filter 220 can filter raw water using a reverse osmosis (RO) method by applying pressure from the pump 230.

As described above, the pH adjustment water purification filter 100 is a filter that adjusts the pH of purified water within the recommended pH range, and is installed behind the reverse osmosis filter 220 to filter the water through the reverse osmosis input filter 220. It may be provided to adjust the pH of purified water.

The reverse osmosis (RO) filtration method filters not only the minerals contained in the water but also the ions, thereby filtering only pure water. As the ions are removed, the carbon dioxide contained in the water combines with the water, causing the pH of the water to drop to 5.5 to 6.5. It may be slightly acidic.

Therefore, the pH adjustment water purification filter 100 is provided on the downstream side of the reverse osmosis filter 220, and the pH of the purified water filtered through the reverse osmosis filter 220 is within the recommended range (pH 6.5 to 8.5). The pH is adjusted to have .

Of course, the pre-treatment filter 210 may not be provided as needed, and another filter may be provided separately before or after the pH adjustment water filter 100 as needed.

Meanwhile, in order for raw water to be smoothly filtered in the reverse osmosis filter 220, a pressure above a certain level is required, and the pump 230 is directed to the reverse osmosis filter 220 at a pressure higher than the filtration pressure of the reverse osmosis filter 220. Raw water can be pressurized.

Meanwhile, a water outlet nozzle 250 and a water outlet passage 240 may be provided.

As described above, since the water purifier 200 of this embodiment is a direct water purifier, the purified water whose pH has been adjusted by passing through the reverse osmosis filter 220 and the pH adjustment water purification filter 100 passes through the water outlet passage 240. It can be guided to the water outlet nozzle (250).

The water outlet nozzle 250 is a nozzle for extracting purified water to the outside of the water purifier 200, and purified water whose pH is adjusted to the recommended range can be provided to the user through the water outlet nozzle 250.

The water outlet nozzle 250 is provided to guide the purified water that has passed through the pH adjustment water filter 100 to the water outlet nozzle, so that the filtered purified water can be directly provided to the user without passing through a separate storage tank.

Of course, if necessary, a heating unit (not shown) and a cooling unit (not shown) that heat or cool the purified water before it is provided to the user may be provided.

The reverse osmosis filter 220 and the pH control water purification filter 100 have a lifespan, and can be provided to be replaceable so that they can be replaced with new filters when their lifespan has reached.

At this time, when the reverse osmosis filter 220 reaches its replacement cycle, the reverse osmosis filter 220 and the pH adjustment water purification filter 100 are the same so that the pH adjustment water purification filter 100 can also be replaced. or may have a similar lifespan.

Therefore, convenience can be improved because the user or manager can replace the reverse osmosis filter 220 and the pH control water filter 100 at once without having to replace them separately.

Figure 12 is a configuration diagram of a water purifier including a pH-adjusting water purification filter according to another embodiment of the present invention.

Referring to FIG. 12, a water purifier 300 including a pH adjusting water filter according to another embodiment of the present invention may include a filter unit 301, a pump 330, and a purified water tank 340.

The water purifier according to this embodiment may be a water storage type water purifier that stores filtered purified water in a tank and then provides it to the user.

Since the filter unit 301 is the same as the filter unit 201 in the above-described embodiment, detailed description will be omitted. That is, the pH adjustment water purification filter 100 is provided at the rear of the reverse osmosis filter 320 to adjust the pH of the filtered water so that the pH is within the recommended range (pH 6.5 to 8.5).

The pump 330 may pressurize the raw water heading to the reverse osmosis filter 320 to a level higher than the filtration pressure of the reverse osmosis filter 320 .

Since the water purifier 300 of this embodiment is a water storage type water purifier, it may be provided with a purified water tank 340 that stores purified water whose pH has been adjusted by passing through the reverse osmosis filter 320 and the pH-adjusted water filter 100.

In addition, a purified water guide passage 352 may be provided to guide purified water that has passed through the pH-adjusted water purification filter 100 to the purified water tank 430.

Additionally, a water outlet passage 354 and a water outlet nozzle 360 may be provided to extract purified water stored in the purified water tank 340.

The water outlet nozzle 360 is a nozzle for extracting purified water to the outside of the water purifier 300, and purified water whose pH is adjusted to the recommended range can be provided to the user through the water outlet nozzle 360.

Additionally, if necessary, a heating unit (not shown) and a cooling unit (not shown) that heat or cool the purified water before it is provided to the user may be provided.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention can add or change components within the scope of the same spirit. , deletion, addition, etc., other embodiments can be easily proposed, but this will also be said to fall within the scope of the present invention.

100: pH control filter 110: Water permeable filter
112: hollow 120: filling part
122: Inlet 124: Side hole
126: outlet 128: internal space
130: Lower stopper 140: Control particle
142: OH group generating particles 144: cation exchange resin

Claims (11)

A water permeable filter with a hollow area formed from one end to the other in the center of the cross section;
a lower stopper that closes the lower end of the water-permeable filter;
a filling portion that is inserted into the hollow of the water permeable filter to form an inner space, and has an inlet through which purified water passing through the water permeable filter flows into the inner space, and an outlet through which purified water passing through the inner space flows out;
Control particles filled in the inner space of the filling part so that the pH of the purified water passing through the inner space of the filling part is adjusted, and containing OH group generating particles provided to supplement OH groups in the purified water passing through the inner space;
A pH-adjusted water purification filter comprising a. According to paragraph 1,
A pH-adjusting water purification filter, wherein the OH group generating particles are ceramic balls containing magnesium or potassium. According to paragraph 1,
The control particle is,
A pH-adjusted water purification filter, characterized in that it further comprises a cation exchange resin that replenishes positive ions in the purified water penetrating the inner space of the filling unit. According to paragraph 3,
The cation exchange resin is,
A pH-adjusted water purification filter comprising at least one of H+ form or Na+ form. According to paragraph 1,
The control particle is,
A pH-adjusted water purification filter filled with more than 30% and less than 80% of the internal space volume of the filling part. According to paragraph 1,
The filling part is,
It is disposed within the hollow of the filter to form the internal space,
The lower surface facing the lower stopper is closed,
A plurality of slits are formed on the side facing the inner peripheral surface of the hollow to be open,
A pH-adjusted water purification filter whose upper surface is open so that purified water in the internal space is discharged to the upper hollow side of the water-permeable filter. According to paragraph 1,
The filling part is,
It is disposed within the hollow of the filter to form the internal space,
The lower surface facing the lower stopper is open to allow purified water to flow into the internal space,
The side facing the inner peripheral surface of the hollow is closed,
A pH-adjusted water purification filter whose upper surface is open so that purified water in the internal space is discharged to the upper hollow side of the water-permeable filter. According to paragraph 1,
The filling part is,
It is disposed within the hollow of the filter to form the internal space,
The lower surface facing the lower stopper and the side facing the inner peripheral surface of the hollow are open to allow purified water to flow into the internal space,
A pH-adjusted water purification filter whose upper surface is open so that purified water in the internal space is discharged to the upper hollow side of the water-permeable filter. Reverse osmosis filter that filters raw water;
A pH control water filter installed behind the reverse osmosis filter to adjust the pH of the purified water filtered through the reverse osmosis filter;
Includes,
The pH control water filter is,
A water permeable filter with a hollow area formed from one end to the other in the center of the cross section;
a lower stopper that closes the lower end of the water-permeable filter;
a filling portion that is inserted into the hollow of the water permeable filter to form an inner space, and has an inlet through which purified water passing through the water permeable filter flows into the inner space, and an outlet through which purified water passing through the inner space flows out;
Control particles filled in the inner space of the filling part so that the pH of the purified water passing through the inner space of the filling part is adjusted, and containing OH group generating particles provided to supplement OH groups in the purified water passing through the inner space;
Including, water purifier. According to clause 9,
a water outlet nozzle through which purified water whose pH is adjusted is discharged from the pH-adjusted water filter;
A water purifier including a water outlet passage that guides the purified water that has passed through the pH-adjusting water filter to the water outlet nozzle. According to clause 9,
A purified water tank storing purified water whose pH has been adjusted by the pH-adjusted purified water filter;
A water purifier including a water purification guide passage that guides the purified water that has passed through the pH adjustment water filter to the purified water tank.

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