KR101930641B1 - Filter cartridge - Google Patents

Abstract

The present invention relates to a filter cartridge suitable for filtering water containing lime by comprising an injector for efficiently contacting water to be filtered in a direct water purifying apparatus, in particular water containing lime, and an ion exchange resin for removing calcium (Ca^++) ions as a filter medium. The filter cartridge comprises: a hollow housing having a water inlet pipe and a water outlet pipe; an injector connected to an inner end of the housing of the inlet pipe to inject water received through the inlet pipe into the housing; and an ion exchange resin filled inside the housing as a filter medium for removing calcium (Ca^++) ions from the water introduced into the housing.

Description

{Filter cartridge}

The present invention relates to a filter cartridge, and more particularly to a filter cartridge for efficiently contacting water, particularly, calcified water to be filtered and an ion exchange resin for removing calcium (Ca ⁺⁺ ) ions as a filter medium in a direct- To filter cartridges suitable for filtering lime water.

Generally, among the methods of refining the water quality of the contaminated raw water, most of the domestic water purifiers are filter passing type and can be classified into two types, namely, direct water type and storage tank type (RO).

First, direct water type water purifiers are generally equipped with a pretreatment filter, a carbon filter for removing residual chlorine, and a hollow fiber filter (the same for NP filter and ceramic filter), and finally a carbon filter for removing taste and odor. Most of the water purifiers are equipped with a process of filtering the incoming water quality. The water-purifying water purification apparatuses allow the filters of each function to pass step by step so that the hardness of the inorganic calcium ions is not removed and the purified water quality does not serve as good quality drinking water, There is a problem in that the flow rate of the water flow is rapidly lowered due to the functional structure and the environment where the microorganisms such as bacteria and the like meet with the temperature conditions is created.

Second, the storage tank type water purifiers are similar to the filter passing type, but the water quality is good by removing the contamination source by using a reverse osmosis membrane filter (membrane-RO) instead of the hollow fiber membrane (NP filter and ceramic filter are the same) (PH), which is the basis of water, changes to acidic water.

In addition, the reverse osmosis membrane (RO) system is excellent for removal of organic and inorganic ions from untreated water. However, when lime components of inorganic ions are inserted into fine osmotic membrane pores, they are clogged, And there is also a problem in management such as microbial propagation due to the use of a small amount of purified water in the tank because the amount of instantaneous purified water is small.

A composite filter assembly has been registered in Korean Utility Model Registration No. 20-0367658. This is because a carbon filter, a sediment filter, a ceramic filter, and a hollow fiber membrane filter are sequentially mounted inside a cylindrical body formed with an inlet and an outlet, thereby maximizing the performance of the filter, and a universal filter arrangement- to be. As described above, there is no function to remove inorganic ions, especially calcium ions derived from calcium carbonate (CaCO ₃ ). Rather, among the filters incorporated in the body, ceramic filters, hollow fiber membrane filters, There is no significant difference from general filter arrangement type water purification apparatus such as the function is decreased as it is used due to clogging.

Also, in the patent literature of the prior art

Patent Document 1: Korean Utility Model Registration No. 10-0803079 - Scale prevention device;

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-340448 -

However, in the above prior arts, Patent Documents 1 and 2 are different from each other in their use, and the total volume capacity - (eq / l), which is a characteristic of the ion exchange resin installed for hardness removal, It is considered that sufficient space for preparing the ion exchange resin is not ensured and sufficient contact with the water passing through the ion exchange resin is not taken into account and the time 6 to 9 seconds is not considered, .

SUMMARY OF THE INVENTION The present invention provides a filter cartridge including an injector for efficiently contacting an ion exchange resin for completely removing calcium (Ca ⁺⁺ ) ions from a water to be filtered in a direct water purification apparatus.

A filter cartridge according to the present invention includes: a hollow housing having a water inlet pipe and a water outlet pipe; An injector connected to the inner end of the housing of the inlet pipe to inject water received through the inlet pipe into the housing; And an ion exchange resin for removing calcium (Ca &^lt; ⁺ >) ions from the water filled in the housing as a filter medium and getting into the housing; .

The housing may have an internal volume corresponding to 120 to 140% of the total volume of ion exchange resin filled into the housing.

The water inlet pipe may further include a screen having a water hole at an inner end of the housing.

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

The injector is fluidically connected to the inlet tube, wherein the injector can be rotatably secured within the housing by the rotor.

The sprayer may be further connected to a slave shaft, and at least one stirring blade may be attached to the slave shaft.

According to the present invention, there is provided a filter cartridge including an injector for effectively contacting the ion-exchange resin for removing calcium (Ca &^lt; ⁺⁺ >) ions as water and calcium- / RTI >

1 is a side sectional view schematically showing a first concrete 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 concrete example of the 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 sectional view schematically showing a second concrete example of the filter cartridge according to the present invention.
6 is a side sectional view schematically showing still another third embodiment of the filter cartridge according to the present invention.

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

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

The housing 12 is an element constituting the filter cartridge 11 and functions to accommodate the ion exchange resin M as a filter medium therein. For this purpose, the housing 12 is formed in a hollow shape and is not limited in its outer shape. However, it may be cylindrical in order to secure the widest inner volume in a limited space such as an inner space of a water purifier. The housing 12 is provided with a water inlet pipe 13 and a water outlet pipe 16. The water inlet pipe 13 is configured to allow the water, preferably calcified water, to be purified, into the housing 12 to be introduced into the housing 12, preferably as a filter medium, Ca ⁺⁺ ) ions to remove calcium (Ca &^lt; ⁺⁺ >) ions from the water introduced through the inlet pipe 13. The water outlet pipe 16 is configured to allow the water, preferably the lime, to be purified, to flow into the housing 12 to form calcium (Ca &^lt; ⁺⁺ >) ions in the lime, preferably as a filter medium in the housing 12, And contact with the ion exchange resin to remove purified water from the housing 12. The overall size of the housing 12, which constitutes the majority of the filter cartridge 11 and which substantially determines the water purification capacity, is selected from the group consisting of inorganic ions contained in the water to be purified, preferably calcium-containing water, Can be determined according to the amount of calcium ions.

A sprayer 14 is fluidly connected to the inner end of the housing 13 of the water inlet pipe 13 to spray water into the housing 12 through the water inlet pipe 13. Here, the expression 'fluidically connected' means that the fluid to be introduced through the water 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 introduced into the housing 12 through the water inlet pipe 13 widely in the interior space of the housing 12. Thus, the injector 14, the tree is widely spread as a filter medium, in particular calcium as the water-containing filter material and the calcareous filled in the water to be constant and the housing 12 by through (Ca ⁺⁺⁾ ion exchange resin for removing ions So that the water flowing through the water inlet pipe 13 is evenly sprayed in the filter cartridge to prevent the flow of deflected water through the space in comparison with the summed capacity, , The ion exchange resin layer is protected and uniformly passed through the ion exchange resin layer to uniformly adsorb inorganic ions, especially calcium ions in the calcareous material, and the purified water is discharged through the water outlet pipe. That is, water is injected into the space inside the filter cartridge to form an internal pressure so that it is uniformly adsorbed on the ion exchange resin as a filter medium, and the discharge action of the treated water is smoothly performed.

The injector 14 may, for example, have a configuration as exemplarily shown in Fig. The injector 14 according to the first embodiment is integrally fixed between the upper plate 142 and the lower plate 143 and between the upper plate 142 and the lower plate 143. The upper plate 142 and the lower plate 143 The water injected from the water inlet pipe 13 to which the injector 14 having the above-described configuration is fixed is radially ejected by the ejection plate 141 Thereby spreading the water widely. That is, the water received into the filter cartridge 11 through the water inlet pipe 13 is obtained in the form of a water stream at the time of the intake, and is introduced into the filter medium, preferably the layer of the ion exchange resin M, And is sprayed evenly through the water passing through the water inlet pipe 13 by the sprayer 14 as described above, which is used for preventing a swirling phenomenon and a deflected water flow which are generated by direct contact.

An ion exchange resin (M) for removing calcium (Ca ⁺⁺ ) ions derived from calcium carbonate from water containing inorganic ions, in particular, calcite, is introduced into the housing 12 from the water which is received as a filter medium into the housing 12 Lt; / RTI > As the ion exchange resin, it is possible to use a cation exchange resin prepared by mixing with a mixed material such as porous and gel suitable for the removal of a cation exchange resin, especially calcium (Ca ⁺⁺ ) ion, . In particular, such ionized water may be preferably porous in order to increase the contact area with water and increase cation adsorption capacity. Such a drinking water ionizer should be performed by a manufacturer having a long manufacturing experience together with excellent facilities, so that a desired function can be achieved. It should be understood, however, that the invention is not intended to be limited thereto.

The housing 12 may have a volume content corresponding to 120 to 140% of the total volume of the ion exchange resin M filled in the housing 12. [ Therefore, the internal space of the housing 12 is filled with the filter medium, 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, Quot; allowable resin expansion space "can be formed. That is, the expansion space should be secured in the housing 12 so that the expansion capacity according to the total volume capacity (eq / l) of the ion exchange resin can be extinguished.

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

Total 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, it is preferable that the housing 12 has an internal volume corresponding to 120 to 140% of the total volume of the ion exchange resin M filled in the housing 12, and accordingly, the above- Can be secured.

For convenience, a length d1 that forms a resin expansion permitting space by regulating the length d2 of the ion exchange resin M filled in the cylindrical housing 12 having the same cross sectional area as shown in FIG. 1, It can be understood that it is possible to secure the space for allowing the resin expansion.

The inflow water injected from the inside of the housing 12 passes through the already provided resin expansion allowing space and is contacted with the filter medium, that is, the ion exchange resin M, and inorganic ions, that is, calcium ions are adsorbed on the ion exchange resin and removed. If this process is a water supply, residual chlorine is not removed but remains and is safe for propagation of microorganisms.

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

A first embodiment of the screen 15 is illustratively shown in Fig. That is, the screen 15 is formed with a plurality of first water supply holes 151 having a rectangular shape with a narrow width. In this case, the through holes in the short axis direction of the first water supply hole 151, Mm. Therefore, it is possible to prevent the particles of the ion exchange resin M from escaping through the water outlet pipe 16 due to the size of the water flow hole. Alternatively, a second embodiment of the screen 15 is illustratively shown in Fig. That is, in the screen 15, a plurality of second through holes 152 having a smaller diameter than the particle diameter of the ion exchange resin M are formed, so that the particles of the ion exchange resin M are separated from the water outlet pipe 16 It is possible to prevent escape through. It is to be understood that the screens with these through holes are exemplary and that any size and shape are possible to prevent particles of the ion exchange resin M from escaping through the water outlet pipe 16, The number and the like of the water can be appropriately selected according to the amount of water discharged through the water outlet pipe 16, that is, the purified water amount.

The filter cartridge according to the first embodiment of the present invention as shown in Fig. 1 having such a configuration is a bottom discharge type in which water is introduced from the upper portion with respect to the filter cartridge and water is discharged through the lower portion, The calcium ions derived from the calcium carbonate in the inorganic ions, particularly the calcified water, are effectively removed by the filter medium filled in the filter medium, preferably the ion exchange resin.

Unlike the above-described lower discharge method, the filter cartridge according to the present invention may be configured as a top discharge type according to the structure, installation position, use, etc. of the water purifier including the filter cartridge. For this purpose, A water pipe with a water hole can be connected.

That is, the filter cartridge 21 according to the second embodiment of the present invention is shown in Fig. 5, the filter cartridge 21 according to the second embodiment of the present invention includes a hollow housing 22 having a water inlet pipe 23 and a water outlet pipe 26; An injector (24) connected to an inner end of the housing of the inlet pipe (23) and injecting water received through the inlet pipe (23) into the housing (22); And an ion exchange resin M for removing calcium (Ca ⁺⁺ ) ions from the water filled in the housing 22 as a filter medium and getting into the housing 22, A water collecting pipe 27 having a water supply hole 271 formed therein is connected. Except for the position where the water collecting pipe 27 and the hemispherical water hole 271 formed in the collecting water pipe and the water pipe 26 are fixed, the structures according to the second embodiment of the present invention, i.e., the housing, , The ion exchange resin, and the water outlet pipe are all the same and / or similar to those described in the first embodiment of the present invention, and therefore, the repeated explanation will be avoided.

The water collecting pipe 27 is located in the housing 22, one end of which is open at its end, and water is passed by the formation of the water passage hole, that is, the third water passage hole 271 as shown in FIG. 5 So that the ion exchange resin as the filter medium is prevented from passing therethrough and thus only the filtered water passes through and the other end of the collecting water pipe is connected to the water outlet pipe 26, To be discharged to the outside of the housing (22). The water outlet pipe 26 is disposed on the upper part of the cartridge such as the water inlet pipe 23, so that an upper discharge manner is obtained in which the water is taken from the upper portion with respect to the filter cartridge and then discharged to the upper portion.

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

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

The configurations according to the third embodiment of the present invention, namely, the housing, the inlet pipe, the injector, the ion exchange resin, the screen, and the outlet pipe are all the same and / or similar to those described in the first embodiment of the present invention, Repeated explanations will be avoided. The screen 35 is identical 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 tube 33 where the injector 34 can be rotatably secured within the housing 32 by means of a rotator 341. According to this structure, the water injected into the housing 32 through the water inlet pipe 33 serves to radially disperse the incoming water while rotating the water injector 34.

The sprayer 34 is further connected to a slave shaft 342 and at least one stirrer 343 and 344 can be mounted on the slave shaft 342. The agitating wings 343 and 344 agitate the layer of the ion exchange resin M as a filter medium in the housing 32 to contact the water to be purified and the ion exchange resin and the resulting inorganic ions, The adsorption and removal of calcium ions can be further facilitated.

Further, the filter cartridge according to the present invention may further include a leg or a pedestal for fixing to the lower portion of the cartridge body, when necessary for its size and / or mounting inside the water purifier.

As described above, according to the present invention, it is possible to solve all the problems with existing water purifiers, and in summary:

(1) Filter direct connection type water purifier: The ion filter cartridge for removing the calcite can be used as a substitute for the 'hollow fiber filter or ceramic filter' of the conventional device, whereby the sediment (pretreatment) filter, ) Since the functions of the carbon filter and the hollow fiber filter can all be extinguished together, the number and types 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 final taste and / So that it is impossible to reproduce microorganisms. Especially, 'Carbon filter for residual chlorine removal', which was previously used for protection of filtration membranes such as hollow fiber filter or ceramic filter, is unnecessary, but water quality is further stabilized and improved, resulting in economical efficiency. Can be said to be remarkably high, and the water purification apparatus can be provided which can be easily managed by simplifying the structure.

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

In the filter arrangement type direct water purifier, the water filter is not removed from the filter, and the calcium ions (Ca ⁺⁺ ) are removed, thereby enhancing the water purification function and the economic effect. Further, when the flow rate is improved by the substitution effect, Although it was concerned about the propagation of microorganisms due to the slow flow rate and temperature condition which are caused by passing through various filters in the various filtration filters installed in the inside, it is possible to solve the concern by the substitution effect as described above, It can be used not only to use but also to reduce the damage caused by the use of water containing calcareous substances in the living environment, and particularly to extend the life of kitchen utensils. Further, there is an effect of providing a lime removal filter cartridge for a water purifier which can be used for applications required for all the living water, such as aqua regia, depending on the application.

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

11, 21, 31: filter cartridge
12, 22, 32: housing
13, 23, 33: Receiving pipe
14, 24, 34: Injector
15, 35: Screen
16, 26, 36: Water pipe
27: house water pipes
141: jetting plate, 142: top plate, 143: bottom plate
151: first water supply hole 152: second water supply hole
271: Third passenger
341: rotating body 342: slave shaft 343: first stirring blade
344: Second stirring gain
S: Permissible space for resin expansion

Claims (6)

A hollow housing having a water inlet pipe and a water outlet pipe;
A water inlet pipe connected to the inner end of the water inlet pipe to inject water received through the water inlet pipe into the housing and rotatably fixed to the inside of the housing by the rotating body and to be connected to the water inlet pipe, An injector rotated by water pressure; And
An ion exchange resin for removing calcium (Ca &^lt; ⁺ >) ions from the water filled in the housing as a filter medium and getting into the housing;
Wherein the filter cartridge comprises a plurality of filter cartridges. The filter cartridge of claim 1, wherein the housing has an internal volume corresponding to 130 to 140% of the total volume of ion exchange resin filled into the housing. The filter cartridge of claim 1, further comprising a screen having a water hole at an inner end of the housing of the water pipe. The filter cartridge of claim 1, further comprising a water collecting pipe having a hemispherical water hole formed therein. delete The filter cartridge as claimed in claim 1, wherein a further slave shaft is further connected to the injector, and at least one stirring blade is attached to the slave shaft.

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