WO2020122288A1

WO2020122288A1 - Decalcification filter cartridge

Info

Publication number: WO2020122288A1
Application number: PCT/KR2018/015877
Authority: WO
Inventors: 김병철; 김은라
Original assignee: 김병철
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2020-06-18

Abstract

The present invention relates to a filter cartridge which includes an injector for efficiently bringing water to be filtered, especially calcareous water, into contact with an ion exchange resin as a filter medium for removing calcium ions (Ca⁺⁺), in a direct type water purifier, and thus is suitable for filtration of calcareous water. The filter cartridge comprises: a hollow housing including an inlet pipe and an outlet pipe; an injector connected to the end of the inlet pipe, located inside the housing, so as to inject water introduced through the inlet pipe into the housing; and an ion exchange resin as a filter medium, which is filled in the housing so as to remove calcium ions (Ca⁺⁺) from the water introduced into the housing.

Description

Filter cartridge for descaling

The present invention relates to a filter cartridge, and in particular, an injector that allows the contact of an ion exchange resin to remove calcium (Ca ⁺⁺ ) ions as water as a filter medium, particularly water to be filtered in a direct-type water purifying apparatus, efficiently Filter cartridges suitable for filtration of calcareous water, including.

In general, among the methods of purifying the water quality of contaminated raw water, most of the home-type water purifiers are through a filter, and can be generally classified into two types such as a direct water type and a storage tank type (RO).

First, direct water purifiers are usually equipped with a pre-treatment filter, a carbon filter for removing residual chlorine, and a hollow fiber membrane filter (NP filters and ceramic filters are the same), and finally consist of carbon filters for removing taste and odor. Most water purifiers are equipped with a process to filter the incoming water quality. The direct-type water purifiers pass through the filters of each function step by step, so that the process is several stages, but the water quality of purified water is not removed, so the purified water quality does not serve as good-quality drinking water. Due to the functional structure, there is a problem in that the flow rate, which is the flow of water, rapidly decreases, and an environment in which microorganisms, such as bacteria, meet the temperature conditions, can reproduce.

Second, the storage tank type water purifiers are similar to the filter passing method, but the difference is that instead of the hollow fiber membranes (NP filters and ceramic filters are also used), a reverse osmosis membrane filter (membrane-RO) is used to remove contaminants, so the water quality is good, but the water quality is good. It is a water purifier with disadvantages such as the change in hydrogen ion concentration (pH), which is the basis of, to acidic water.

In addition, the reverse osmosis membrane purification (RO) method is excellent for removing organic and inorganic ions from untreated water, but when the lime components of the inorganic ions are inserted into the pores of the fine osmosis membrane, they become clogged and lose the water purification function itself, so frequent filter replacement, etc. There is a problem, and there is also a problem in management, such as microbial propagation due to the small amount of purified water stored in the tank.

A composite filter assembly has been registered in Korean Registered Utility Model Publication No. 20-0367658. This is a universal filter arrangement type water purifier that is manufactured in a compact size as well as maximizes the performance of the filter by sequentially installing carbon filters, sediment filters, ceramic filters, and hollow fiber membrane filters inside the cylindrical body where the inlet and outlet are formed. to be. It does not have the ability to remove inorganic ions, especially calcium ions derived from calcium carbonate (CaCO ₃ ), as described above. Rather, ceramic filters, hollow fiber membrane filters, etc. among the filters built into the body are easily applied to inorganic ions of lime water. There is no difference from the general filter arrangement type water purifier, such as the function is deteriorated as it is used due to clogging.

Also, as a patent document of prior art

Patent Document 1: Republic of Korea Utility Model Publication No. 10-0803079-Scale prevention device;

Patent Document 2: Japanese Patent Application Publication No. 2003-340448-Water purification cartridge

Etc., but both of the prior art patent documents 1 and 2 have different uses, and the total volume capacity ((eq/ℓ)) is the characteristic of the ion exchange resin installed for removing hardness. It is judged that it is not possible to obtain the desired performance in the end without considering the sufficient contact method and time of 6 to 9 seconds with water passing through the ion exchange resin, and not securing space for operating capability. .

The present invention is to provide a filter cartridge including an injector that allows efficient contact of an ion exchange resin to completely remove calcium (Ca ⁺⁺ ) ions from water to be filtered in a direct water purifier.

The filter cartridge according to the present invention includes a hollow housing in which an inlet pipe and an outlet pipe are provided; An injector connected to the inner end of the housing of the intake pipe to inject water into the housing through the intake pipe; And an ion exchange resin for removing calcium (Ca ⁺⁺ ) ions from water filled into the housing as a filter material and getting into the housing; It characterized in that it includes.

The housing may have a volume corresponding to 120 to 140% of the total volume of the ion exchange resin filled in the housing.

The inner end of the housing of the outlet pipe may further include a screen with a through hole.

A water collecting pipe having a water hole may be connected to the water outlet pipe.

The injector is fluidly connected to the inlet pipe, where the injector can be rotatably fixed in the housing by means of a rotating body.

A driven shaft may be further connected to the injector, and at least one or more stirring blades may be attached to the driven shaft.

According to the present invention, a filter cartridge including an injector for efficiently contacting ion-exchange resin for removing calcium (Ca ⁺⁺ ) ions as a filtering medium and water containing lime matter to be filtered in a direct-type water purifier Is provided.

1 is a side cross-sectional view schematically showing a first specific example of a filter cartridge according to the present invention.

2 is a perspective view schematically showing a first specific example of an injector constituting a filter cartridge according to the present invention.

3 is a plan view schematically showing a first specific example of a screen constituting the filter cartridge according to the present invention.

4 is a plan view schematically showing a second specific example of the screen constituting the filter cartridge according to the present invention.

5 is a side cross-sectional view schematically showing a second specific example of a filter cartridge according to the present invention.

6 is a side cross-sectional view schematically showing a third specific example of the filter cartridge according to the present invention.

The present invention, in the best form, is provided with an inlet pipe and an outlet pipe, a hollow housing; It is connected to the inner end of the housing of the inlet pipe and sprays water that is received through the inlet pipe into the housing, while being rotatably fixed by a rotating body inside the housing and fluidly connected to the inlet pipe so that the water flowing into the housing An injector rotated by hydraulic pressure; And an ion exchange resin for removing calcium (Ca ⁺⁺ ) ions from water filled into the housing as a filter material and getting into the housing; It provides a filter cartridge for descaling, characterized in that it comprises a.

Hereinafter, with reference to the accompanying drawings, specific embodiments of the present invention will be described in detail.

As shown in FIG. 1, the filter cartridge 11 according to the first embodiment of the present invention includes: a hollow housing 12 having an inlet pipe 13 and an outlet pipe 16; An injector 14 connected to the inner end of the housing of the intake pipe 13 to inject water into the housing 12 through the intake pipe 13; And an ion exchange resin (M) for removing calcium (Ca ⁺⁺ ) ions from water that is filled into the housing 12 and is received into the housing 12 as a filter medium.

The housing 12 is a component constituting the filter cartridge 11, and functions to receive the ion exchange resin M as a filter medium therein. To this end, the housing 12 is formed in a hollow shape, and there is no restriction on the outer shape, but may be preferably cylindrical in order to secure a maximum content within a limited space, such as a space inside the water purifier. The housing 12 is provided with an inlet pipe 13 and an outlet pipe 16. The water intake pipe 13 is supplied with water, preferably calcareous water, into the housing 12, and thus, as a filter medium in the housing 12, in particular, calcium in the water preferably containing lime matter ( Ca ⁺⁺ ) In contact with the ion exchange resin for removing ions, calcium (Ca ⁺⁺ ) ions are removed from the water introduced through the inlet pipe 13. The water outlet pipe 16 is supplied with water to be purified, preferably calcareous water, into the housing 12 to filter calcium in the housing 12, particularly calcium (Ca ⁺⁺ ) ions in the calcareous water. It functions to discharge purified water out of the housing 12 in contact with the ion exchange resin for removal. Constituting most of the filter cartridge 11, the overall size of the housing 12 which substantially determines the water purification capacity is derived from inorganic ions contained in water to be purified, preferably calcareous water, especially calcium carbonate. It can be determined according to the amount of calcium ions.

An injector 14 is fluidly connected to an inner end of the housing of the intake pipe 13 to function to inject water obtained through the intake pipe 13 into the housing 12. Here, the expression'fluidically connected' means that the fluid flowing through the inlet pipe 13, that is, water to be purified, is connected to the housing 14 through the injector 14. The injector 14 functions to spread the water flowing into the housing 12 through the inlet pipe 13 in the space inside the housing 12. Ion exchange resin for removing calcium (Ca ⁺⁺ ) ions as water and filter media filled in the housing 12, particularly lime-containing water and filter media to be purified by spreading widely through the injector 14 By effectively and evenly contacting without contact bias, the water flowing through the intake pipe 13 is evenly sprayed in the filter cartridge to prevent the flow of deflected water through the space for the summed capacity, and the filter medium layer, preferably It is characterized in that it protects the ion exchange resin layer and allows it to pass evenly so that inorganic ions, especially calcium ions in lime water, are evenly adsorbed and the purified water is discharged through the water outlet pipe. That is, as water is sprayed into the space inside the filter cartridge, an internal pressure is formed so that it is evenly adsorbed on the ion exchange resin as a filter medium, and also facilitates the discharge action of the treated water.

The injector 14 may, for example, have a configuration as exemplarily shown in FIG. 2. The injector 14 according to the first embodiment is integrally fixed between the upper plate 142, the lower plate 143, and the upper plate 142 and the lower plate 143, from the center of these upper plate 142 and the lower plate 143 It includes a plurality of injection plate 141 radially curved in the outward direction, so that the water flowing from the inlet pipe 13 having the above-described configuration fixed to the inlet tube 13 is radially radiated by the injection plate 141. It functions to spread water by spreading it outward. That is, the water that is received into the filter cartridge 11 through the water intake pipe 13 is obtained in the form of a water stream when it is obtained, and is filtered into a layer of filter material, preferably ion exchange resin M, which is filled inside the housing 12. It is characterized in that it is evenly sprayed through the water passing through the water intake pipe 13 by the injector 14 as described above, which is used to prevent the vortex phenomenon and the flow of deflected water caused by direct contact.

Within the housing 12 is provided as the filter material housing is an ion exchange resin (M) of the water to be obtained within the 12 to remove the calcium (Ca ⁺⁺⁾ ions of the calcium carbonate derived from an inorganic ion, in particular a water-containing calcareous It is filled. As the ion-exchange resin, it is possible to use a cation-exchange resin that is drinkable, especially a cation-exchange resin prepared by mixing materials such as porous and gel to be suitable for removing calcium (Ca ⁺⁺ ) ions. . Particularly, such an ion resin may be preferably porous in order to increase the contact area with water and enhance the cation adsorption capacity. Such a drinkable ion resin should be made by a manufacturer with long-term manufacturing experience along with excellent facilities to function properly. However, it should be understood that the invention is not intended to be limited to these.

The housing 12 may have a volume corresponding to 120 to 140% of the total volume of the ion exchange resin M filled in the housing 12. Therefore, the inner space of the housing 12 is a filter material, in particular, the portion filled with the ion exchange resin (M) and the empty space not filled with the ion exchange resin (M), that is, the ion exchange resin is expanded when it is in contact with water. An allowable “resin expansion space” may be formed. That is, in the housing 12, an expansion space must be secured so as to extinguish the expansion capacity according to the total volume capacity ((eq/ℓ)) of the ion exchange resin.

The volume ratio (%) proportional to the capacity of the filter cartridge is as follows:

Factory Capacity

1 eq/ℓ = 21,800 grain/ft ³

21,800 Grain/ft ³ ÷ 28.31 ｅ = 770.04 Grain/ ｅ

Conversion unit: 1.0 ft ³ = 28.31 ｅ , 1.0 Grain = 0.0647 g

Total Volume Capacity

770.04 grain/ e x 1.9 (available capacity expansion coefficient) ÷ 75% (adsorption efficiency)

= 1,097.25 Grain/ e

Filter Cartridge Volume%

1,097.25 Grain/ ｅ -770.04 Grain/ ｅ = 327.21 Grain/ ｅ

Total capacity per liter of ion resin 770.04 (70.2%) : Expansion capacity 327.21 (29.8%)

Therefore, the housing 12 preferably has a volume corresponding to 120 to 140% of the total volume of the ion exchange resin (M) filled in the housing 12, and accordingly the resin expansion allowable space (S) as described above. It is possible to secure.

For convenience, by adjusting the length (d2) of the ion exchange resin (M) filling in the cylindrical housing 12 having the same cross-sectional area as exemplarily shown in FIG. 1, the length (d1) of forming the allowable space for resin expansion. It will be understood that it is possible to secure a resin expansion allowable space by limiting.

Inflow water injected from the inside of the housing 12 passes through the resin expansion allowance space already secured, and is brought into contact with the filter medium, that is, the ion exchange resin M, so that inorganic ions, that is, calcium ions are adsorbed and removed by the ion exchange resin. When this process is a tap water, residual chlorine is not removed and remains, so it is safe to reproduce microorganisms.

The inner end of the housing 12 of the outlet pipe 16 may further include a screen 15 through which a water hole is formed. A number of through holes are formed in the screen 15 to prevent the filter medium, that is, the ion exchange resin M, from being discharged to the outlet pipe 16, and function to discharge only filtered water. Although it may vary depending on the size of the filter medium used, that is, the ion exchange resin, the through hole may have a through hole of 0.2 to 0.8 mm.

The first specific example of the screen 15 is exemplarily illustrated in FIG. 3. That is, the screen 15 is formed with a plurality of first through-holes 151 in a narrow rectangular shape, wherein the through-hole in a short axis direction is 0.2 to 0.8 rather than a long axis direction of the first through-hole 151 in a rectangular shape. It may be ㎜, therefore, it is possible to prevent particles of the ion exchange resin M from escaping through the water outlet pipe 16 due to the size of the through hole. Alternatively, a second embodiment of the screen 15 is illustratively shown in FIG. 4. That is, the screen 15 has a plurality of second through-holes 152 in the form of a circle having a diameter smaller than the particle diameter of the ion exchange resin (M) is formed, the particles of the ion exchange resin (M) to the outlet pipe (16) It can be prevented from escaping. It is understood that the screen having these through-holes is an example, and any size and shape capable of preventing particles of the ion exchange resin M from escaping through the water outlet pipe 16 can be understood, and the shape and It will be understood to those skilled in the art that the number and the like can be appropriately selected according to the amount of water discharged through the outlet pipe 16, that is, the amount of purified water.

The filter cartridge according to the first embodiment of the present invention as shown in FIG. 1 having such a configuration is a lower discharge method, through which water is introduced from the upper portion based on the filter cartridge, and water is discharged through the lower portion, and the filter cartridge While passing through, it is possible to effectively remove inorganic ions, particularly calcium ions derived from calcium carbonate in calcareous water, by a filter material filled therein, preferably ion exchange resin.

Alternatively, unlike the lower discharge method as described above, the filter cartridge according to the present invention may be configured as an upper discharge method according to a structure or an installation location or use of a water purifier including a filter cartridge. A water collecting pipe having a through hole may be connected.

That is, the filter cartridge 21 according to the second embodiment of the present invention is shown in FIG. 5. That is, as shown in FIG. 5, the filter cartridge 21 according to the second embodiment of the present invention includes: a hollow housing 22 provided with an inlet pipe 23 and an outlet pipe 26; An injector 24 connected to the inner end of the housing of the intake pipe 23 to inject water into the housing 22 through the intake pipe 23; And an ion exchange resin (M) for removing calcium (Ca ⁺⁺ ) ions from water that is filled into the housing 22 and is received into the housing 22 as a filter medium. It is characterized in that the water collecting hole 271 is formed, the water collecting pipe 27 is connected. Structures according to the second embodiment of the present invention, ie, housing, inlet pipe, injector, except for the location in which the hemispherical water hole 271 and the outlet pipe 26 fixed in the collecting pipe 27 and the collecting pipe are fixed, etc. , Ion exchange resin and water outlet pipes are all the same and/or similar to those described in the first embodiment of the present invention, and thus repeated description will be avoided.

The water collecting pipe 27 is located in the housing 22, and one end thereof is open at its end, and as shown in FIG. 5, the water is passed through the formation of the third watering hole 271. It is introduced into the water collecting pipe 27, but prevents the ion exchange resin as a filter material from passing through, so only the filtered water passes, and the water collecting pipe is connected to the other end of the water pipe 26, through the water pipe 26 It is to be discharged to the outside of the housing 22. The outlet pipe 26 is disposed on the upper portion of the cartridge, such as the inlet pipe 23, and thus an upper discharge method in which the filter cartridge is received from the upper portion and discharged to the upper portion is realized.

Alternatively, the filter cartridge according to the present invention is rotatably fixed by a rotating body such as a bearing inside the housing so as to be rotated by the water pressure of the water flowing into the housing through the injector without supplying other power from the outside. It can be configured to be fluidly connected to the inlet pipe.

That is, the filter cartridge 31 according to the third specific example of the present invention is shown in FIG. 6. That is, as shown in FIG. 6, the filter cartridge 31 according to the third embodiment of the present invention includes a hollow housing 32 provided with an inlet pipe 33 and an outlet pipe 36; An injector 34 connected to the inner end of the housing of the intake pipe 33 to inject water into the housing 32 through the intake pipe 33; And an ion exchange resin (M) for removing calcium (Ca ⁺⁺ ) ions from water that is filled into the housing 32 and is introduced into the housing 32 as a filter medium, wherein the injector 34 includes It is characterized in that it is rotatably fixed by the rotating body 341.

The components according to the third embodiment of the present invention, namely, the housing, the inlet tube, the injector, the ion exchange resin, the screen and the outlet tube, are all the same and/or similar to those described in the first embodiment of the present invention, and thus Avoid repeated explanations. The screen 35 is the same and/or similar to the screen 15 of the filter cartridge 11 according to the first embodiment.

The injector 34 is fluidly connected to the inlet pipe 33, where the injector 34 can be rotatably fixed in the housing 32 by a rotating body 341. By this configuration, the sprayer 34 rotates by the water pressure of the water flowing into the housing 32 through the water inlet pipe 33 to radially distribute the water flowing in.

In addition, the driven shaft 342 is further connected to the injector 34, and at least one or more

stirring blades

343 and 344 may be attached to the driven shaft 342. The stirring

blades

343 and 344 are stirred in a layer of the ion exchange resin M as a filter medium in the housing 32, and the contact between water to be purified and the ion exchange resin and thus inorganic ions, i.e., lime-derived calcium carbonate derived The adsorption and removal of calcium ions can be made easier.

In addition, the filter cartridge according to the present invention may further include a leg or a stand for fixing below the cartridge body, if necessary for its size and/or mounting inside the water purifier.

Thus, as described above, according to the present invention, it is possible to solve all the problems of the existing water purifiers, which, in summary:

(1) For a filter-type water purifier: The ion filter cartridge for descaling can be used as a replacement for the'hollow fiber membrane filter or ceramic filter' of the existing device, thereby sediment (pre-treatment) filter, residual chlorine removal (pre-treatment) ) Since the functions of the carbon filter and the hollow fiber membrane filters can all be extinguished together, the type and number of filters used are greatly reduced, thereby increasing the flow rate between the filters, and the residual chlorine to the carbon filter for removing the last taste and/or odor. By remaining, it is impossible to reproduce microorganisms. In particular, the'carbon filter for removing residual chlorine', which was previously used for the protection of filtration membranes such as'hollow fiber membrane filter or ceramic filter', is unnecessary, but the water quality is more stable and improved, so it has a great economical saving effect, and it has high water purification performance and efficiency as drinking water. This can be said to be significantly higher, and at the same time, it is possible to provide a water purifying device for easy post-management by simplifying the structure.

(2) In addition, for a reverse osmosis membrane (RO) water purifier: The osmosis membrane (membrane) is protected by being mounted before the membrane, which is an osmosis membrane, so that the water purification function is good and the life is long.

The filter-type direct-type water purifier removes calcium (Ca ⁺⁺ ) ions that are not removed by the filter, thereby enhancing the water purification function, as well as having a great economical effect. Due to the slow flow rate and temperature conditions generated by passing through the various filters in the various filtration filters installed inside, there was concern about the growth of microorganisms, etc., however, the alternative effect as described above solved the concern and utilized the main function of water quality as drinking water. In addition to being used, it is possible to reduce the damage caused by the use of water containing lime in the vicinity of life, and in particular, it can be used to extend the lifespan of kitchen appliances. In addition, depending on the application, there is an effect of providing a descaling filter cartridge for water purifiers that can be used for applications that are required throughout the entire life, such as cosmetic water.

In the above, the present invention has been described in detail only with respect to the described embodiments, but it is apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and it is natural that such modifications and modifications belong to the appended claims.

Claims

A hollow housing provided with an inlet pipe and an outlet pipe;

It is connected to the inner end of the housing of the inlet pipe and sprays water that is received through the inlet pipe into the housing, while being rotatably fixed by a rotating body inside the housing and fluidly connected to the inlet pipe so that the water flowing into the housing An injector rotated by hydraulic pressure; And

An ion-exchange resin for removing calcium (Ca ++ ) ions from water filled into the housing as a filter medium and getting into the housing;

Filter cartridge for descaling, characterized in that it comprises a.
The filter cartridge for descaling according to claim 1, wherein the housing has a volume corresponding to 130 to 140% of the total volume of the ion exchange resin filled in the housing.
The filter cartridge for descaling according to claim 1, further comprising a screen having a through hole at the inner end of the housing of the outlet pipe.
The filter cartridge for descaling according to claim 1, wherein a water collecting pipe having a hemispherical through hole is further connected to the water outlet pipe.
The filter cartridge for descaling according to claim 1, wherein a driven shaft is further connected to the injector, and at least one stirring blade is attached to the driven shaft.