KR100888647B1 - Filter structure of water purifier - Google Patents

Abstract

A filter unit for a water purifier is provided to prevent water leakage effectively between a housing and a housing cap by employing a packing unit which surrounds an inner circumference of a connecting groove and adheres to the housing. A filter unit for a water purifier comprises the following units. A housing(10) is equipped with a connecting groove having a first groove and a second groove. A housing cap(20) includes a packing unit, which adheres to the housing and surrounds an inner circumference of an upper part of the connecting groove, to prevent water leakage. A filter module(30) is composed of a water outlet(33), a passage for water transferred(34), a case, and a sediment filters.

Description

Filter device for water purifier {FILTER STRUCTURE OF WATER PURIFIER}

The present invention relates to a filter device of a water purifier, and more particularly, a multi-stage water purification action is performed by a single filter, thereby reducing the burden of manufacturing and replacing the filter, and easily cleaning the filter and preventing leakage. The filter apparatus of the water purifier which can be performed.

In general, a water purifier is installed in homes or offices to remove harmful components or odors contained in raw water supplied from a water supply pipe through a filter and convert them into cold or hot water to drink clean water.

In the water purifier, a plurality of filters are provided to remove harmful substances. In general, the water purifier includes a sediment filter (2), a pre-carbon filter (3), and an UF membrane filter (UF-Membrane). Filter, 4) and post-carbon filter 5, raw water passes through each filter in sequence to remove various harmful components and odors, and finally, clean water is discharged.

Looking at the filter structure of the water purifier according to the prior art with reference to Figure 1, the sedimenter filter (2), pre-treated carbon filter (3), UF membrane filter (4), after-treatment carbon filter (5) is configured separately Each filter is connected in series to form a filter device. In this structure, the raw water from the water supply pipe 1 is first obtained by the sediment filter, and the water which is first purified by the sediment filter and withdrawn is again purified by the pretreated carbon filter, and the UF membrane filter and the post treated carbon filter By each step of the water purification process. The raw water that has undergone the filter action in this step is completely purified and collected in the purified water tank (6), and controlled by cold and hot water is discharged to the outside.

On the other hand, since the filter device of the water purifier is not permanent, the water purifying function is degraded as it is used for a long time, and after a predetermined period of time, a new filter must be replaced. In addition, the replacement timing of each filter is different, and since the filter device according to the related art has each filter configured separately, replacement must be performed separately.

That is, in general, the sediment filter and the pretreated carbon filter should be replaced every 3 to 6 months, the UF membrane filter should be replaced every 6 to 8 months, the post-treated carbon filter every 12 months. As the replacement timing of each filter is different, the user has to check carefully the replacement timing of each filter, and there is a management difficulty in disassembling all the filter devices in order to replace one filter. In addition, even when the filter is washed, there is a need to disassemble the water purifier to take out all the filters and wash them.

The present invention, in the filter device of the water purifier, a plurality of filters are integrally formed to solve the complexity of the separate structure and the hassle of having to replace each individually due to different exchange time, and does not separate the filter device from the water purifier It is an object of the present invention to provide a filter device of a water purifier that can be easily cleaned without using a single filter device, and that a multi-stage filtering is possible at a time, and is easy to use and manage.

In the filter device of the present invention for achieving the above object, in the filter device for a water purifier, a plurality of filters are disposed therein to purify the raw water obtained, the first outer groove for screwing is formed on the upper outer peripheral surface As a hole (Hole) formed in the lower center, the upper inner peripheral surface is provided with a ring-shaped packing for coupling the filter module, and the lower inner peripheral surface is formed with a fastening hole having a second groove for screwing the water purifier main body. A housing having a shape; and an inlet through which raw water is introduced from an external water supply pipe so as to be screwed with the water supply pipe, and a coupling groove for screwing into a first groove of the housing is formed at the lower side. A housing cap in close contact with the housing along an upper inner circumferential surface of a coupling groove and having a packing for preventing leakage; Purified water is discharged and a water outlet for fitting into the fastening hole of the housing is formed in the lower center, and a moving path is formed in the groove shape in the vertical direction to move the water on the outer wall surface of the cylinder. A case having a fixing jaw that is bent upwards so that the sediment filter can be fixed, a sediment filter which is fitted along the outer wall surface of the case to firstly purify raw water, and from the inside of the case from the upper side in order A pre-treated carbon filter, a post-treated carbon filter, an UF membrane filter, and a nonwoven fabric disposed between the filters and in the upper and lower sides of the case for partitioning the filters, respectively, for re-refining the primary purified water step by step; Composed of a case cap coupled to the upper portion of the case so that raw water does not flow directly into the case Filter module; Characterized in that comprises a.

In the above-described configuration, the lower portion of the housing is characterized in that it is provided with a drain for directly draining the water inside the housing without passing through the filter module.

In the above configuration, the upper portion of the first groove of the housing is formed while forming an inclined surface to narrow the upper side, the packing of the housing cap can be in close contact with the inclined surface of the housing as the housing and the housing cap is screwed. It is characterized in that it is configured to.

Filter device for water purifier of the present invention by the structure as described above is easy to replace the filter because a plurality of filters are composed of a single module, and even when the filter is washed, it is possible to simple cleaning without separating from the water purifier Easy to maintain In addition, there is an effect that can effectively prevent leakage between the housing and the housing cap.

The technical problems achieved by the present invention and the practice of the present invention will be more clearly understood by the preferred embodiments of the present invention described below. The following examples are merely illustrated to illustrate the present invention and are not intended to limit the scope of the present invention.

Figure 2 is an exploded perspective view showing a filter device for a water purifier according to an embodiment of the present invention, Figure 3 is a view showing in detail the coupling state of the housing and the housing cap.

Referring to the drawings, the filter device is composed of a housing 10 constituting an outer body of the filter device, a housing cap 20 coupled to the housing upper portion, and a filter module 30 disposed inside the housing. The filter device receives raw water through an external water supply device, and finally, the purified water is discharged to the cold / hot water device. The water supply device and the cold / hot water device are not illustrated.

Looking at this in more detail, the housing 10 is a container shape that is molded by the injection of the synthetic resin, the filter module 30 is accommodated therein, the housing cap 20 is configured to be coupled to the upper side.

To this end, a screw-shaped coupling groove 11 is formed on the upper outer circumferential surface, and the housing cap 20 formed on the inner circumferential surface of the groove 21 having the same shape that can be coupled thereto is coupled to be detachable by a screw fastening method. In addition, a fastening hole 13 for coupling the filter module 30 and the main body (not shown) of the water purifier is formed at the center of the inner lower side, and the filter module 30 is fitted to the upper side of the fastening hole 13. The lower side is formed with a threaded groove to be screwed into the water purifier body.

In addition, a lower side of the housing 10 is provided with a drain 14 for directly draining the raw water in the housing 10 and a valve 15 for adjusting the drain. The drain 14 is a washing water when washing the sediment filter 41 which is the first filter or the inner wall of the housing 10, the outer wall of the filter module 30 or the filter module 30 is coupled to the housing 10 It is a configuration to directly discharge the. That is, the inside of the housing can be easily cleaned without separating the housing 10 and the filter module 30.

 The housing cap 20 described above is coupled to the housing 10 to form a body, thereby securing a space capable of purifying raw water by the filter module 30 inside the body. In addition, in the center portion of the housing cap 20, the inlet port 23 for introducing the raw water is formed vertically, the inner circumferential surface of the inlet port 23 is configured to be screwed with the water supply pipe, the lower side of the housing cap 20 The inner circumferential surface is formed with a groove 21 for screwing into the coupling groove 11 of the housing. Here, the inlet 23 may be formed vertically as shown, but may be formed in a horizontal direction to suit the direction in which the raw water is supplied.

When the housing 10 and the housing cap 20 are coupled to each other in more detail with reference to FIG. 3, the coupling groove 11 of the housing 10 and the coupling groove 21 of the housing cap 20 are screwed. The coupling is formed so as to be possible, respectively, the coupling groove 21 of the housing cap 20 is a ring-shaped silicon packing 22 for preventing leakage is attached along the inner peripheral surface. In addition, the protrusion 16 is formed on the coupling groove 11 of the housing to form an inclined surface inward, so that the packing is more closely attached to the inclined surface as the housing 10 and the housing cap 20 are screwed together. It is composed.

In general, water supply pipes supply raw water at high pressure to the inside of the water purifier, so water leaks are likely to occur at each coupling portion of the water purifier, but the above coupling structure has a structure of the housing 10 and the housing cap 20 as compared to the planar protrusion. ), The more the screw is fastened, the more the packing 22 may be in close contact, which is effective in preventing leakage.

Referring back to FIG. 2, the filter module 30 described above is used to purify raw water obtained into the housing. The case 31, which may be made of synthetic resin or a metal of stainless steel, and 4 for purifying raw water. The filter 41 to 44 of the step, the filter module 30 is composed of a case cap 35 for preventing the raw water is introduced directly into.

The case 31 has a plurality of grooves through which the first purified water flows on the outer wall at regular intervals in a vertical direction, and a fixing jaw to fix the sediment filter 41 to be fitted to the outside at the lower side thereof. 36 is formed. A sediment filter 41 for the primary water purification is fitted to the outside of the case along the outer wall of the case, and the second to fourth filters 42, 43, and 44 are sequentially stacked on the inside of the case. . Detailed description of the filter structure and the water purification action of the filter module will be described later.

On the other hand, as shown in Figure 4, the lower side of the case 31 is formed with a water outlet 33 for discharging the purified water, the fastening hole 13 of the housing 10 on the outer peripheral surface of the outlet water 33 Ring-shaped packing is provided to be fitted. In addition, a screw thread is formed on the inner circumferential surface of the lower portion of the fastening arc 13 of the housing 10 so as to be screwed with the water purifier body (not shown).

Figure 5 is a side cross-sectional view showing the structure of a filter module according to an embodiment of the present invention, Figure 6 is a perspective view showing a case of the filter module.

Referring to FIG. 5, the filter module 30 includes four filters 41 to 44 together with a case 31 and a case cap 35. The four filters are a sediment filter (41), a pre-carbon filter (42), a post-carbon filter (43), and an UF membrane filter (44). )

That is, the case 31 has a cylindrical shape and a sediment filter 41, which is a primary filter, is fitted to the outside of the case 31, and the pretreated carbon filter 42, which is a secondary filter, and a tertiary filter are fitted inside. The aftertreatment carbon filter 43 and the UF membrane filter 44 which are the 4th order filters are sequentially arranged. Here, a nonwoven fabric 45 is inserted between each filter in the case and above and below to partition each filter.

Meanwhile, as shown in FIG. 6, the case 31 of the filter module 30 is provided with a moving path 34 through which raw water can move on the outer wall. That is, the raw water passing through the primary filter 41 moves upward along the movement path 34 on the outer wall of the case, and then flows back into the case to filter the secondary to fourth filters 42, 43, and 44. Configured to pass.

In addition, a fixing jaw 36 having a shape that protrudes outward and is bent upwards is formed at the lower side of the case so that the sediment filter 41 fitted to the outside may be fixed. The sediment filter may be fitted by the fixing jaw 13 to be stably fixed.

Looking at each filter in the filter module 30 in detail, the sediment filter 41 is a filter for primarily purifying raw water, and is a filter for filtering out debris or contaminants having a size of 0.5 microns or more. to be. The main raw material of the sediment filter 41 is a nonwoven fabric, which is excellent in elasticity and resilience, and thus may be easily fitted into the case 31. The raw water filtered out of the debris or pollutant is introduced into the case along the moving path 34 formed on the outer wall of the case, and is sequentially filtered.

The pre-carbon filter 42 and the post-carbon filter 43 are solid carbon filters for removing harmful substances contained in raw water as carbon treated with high heat. Hazardous chemicals, including chlorine, are contained in the primary purified water, and activated carbon, which is the main component of the carbon filter, absorbs these harmful chemicals to purify the raw water again.

The UF membrane filter 44 is a filter in which micropores of 0.01 microns or less are formed to remove organic substances such as viruses, bacteria, and other foreign substances. In other words, raw water that has undergone purification by the sediment filter, the pre-treated carbon filter, and the post-treated carbon filter is finally filtered by organic matters such as viruses by the UF membrane filter.

The pretreatment carbon filter 42, the post treatment carbon filter 43, and the UF membrane filter 44 are sequentially disposed from the upper side in the case, and gradually filter the raw water purified by the sediment filter 41 stepwise. The purified water is discharged again through the outlet 33 of the case. In the filter module according to an embodiment of the present invention, the activated carbon content or thickness of the carbon filter, the density of the sediment filter and the UF membrane filter, etc. may be appropriately adjusted so that each filter replacement may be matched at an appropriate time. .

In addition, in the embodiment of the present invention, the aftertreatment carbon filter 43 and the UF membrane filter 44 are configured to be the third and fourth order integers, but the aftertreatment carbon filter 43 and the UF membrane filter 44 It may also be configured to act as an integer even if the order of.

FIG. 7 is a view schematically illustrating a moving path of raw water of a filter device according to an exemplary embodiment of the present invention.

Referring to the drawings, raw water obtained through the inlet 23 of the housing cap 20 flows to the outside of the filter module 30 in the housing 10, and the raw water is sediment filter 41 by the water pressure of the water supply pipe. Soaked in). In this process, foreign matters are primarily filtered, and raw water passing through the sediment filter () moves upward along the outer wall of the case of the filter module. Here, the outer wall of the case 31 is formed with a groove-shaped movement path 34 in the vertical direction for smooth movement of raw water.

The primary purified water is introduced into the case by the moving path 34, which in turn passes through the pretreated carbon filter 42, the aftertreated carbon filter 43, and the UF membrane filter 44. And, foreign substances such as harmful chemical components or viruses are removed, discharged to the lower outlet 33 of the case is moved to the cold and hot water device of the water purifier.

Although the embodiments of the present invention have been described with reference to the present invention, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

1 is a view showing a filtering structure of a filter device according to the prior art,

Figure 2 is an exploded perspective view showing a filter device for a water purifier according to an embodiment of the present invention,

3 is a cross-sectional view showing in detail the coupling state of the housing cap and the housing of the filter device according to an embodiment of the present invention;

4 is a cross-sectional view showing in detail the coupling state of the filter module and the housing of the filter device according to an embodiment of the present invention;

Figure 5 is a side cross-sectional view showing the structure of a filter module according to an embodiment of the present invention,

6 is a perspective view showing a case of a filter module according to an embodiment of the present invention;

7 is a schematic diagram showing a filtering structure of a filter device according to an embodiment of the present invention.

** Explanation of symbols for main parts of drawings **

10: housing 11, 12, 21: screw coupling groove (threaded)

13: fastening hole 20: housing cap

22: silicon packing 23: inlet

30: filter module 31: case

33: outlet 34: moving path

35: case cap 36: fixed jaw

41,42,43,44: filter 45: nonwoven fabric

Claims (3)

In the filter device for water purifiers, A plurality of filters are disposed therein to purify the raw water to be obtained. A first groove for screwing is formed in the upper outer circumferential surface, and a filter module is coupled to the upper inner circumferential surface as a hole formed in the lower center. A cylindrical housing having a ring-shaped packing and having a fastening hole having a second groove for screwing the water purifier main body to a lower inner circumferential surface thereof; and, An inlet through which raw water flows from an external water supply pipe is formed at an upper center portion so as to be screwed with the water supply pipe, and a coupling groove for screwing into a first groove of the housing is formed at a lower side, and an upper inner circumferential surface of the coupling groove is formed. A housing cap in close contact with the housing and provided with a packing for preventing leakage; Purified water is discharged and a water outlet for fitting into the fastening hole of the housing is formed at the lower center, and a moving path is formed in the groove shape in the vertical direction to move the water on the outer wall surface of the cylinder, and the cedi is located on the lower outside. A case having a fixing jaw that is bent upwardly so that the cement filter can be fixed, a sediment filter that is fitted along the outer wall surface of the case to firstly purify raw water, and is disposed in order from the inside of the case from above And pretreated carbon filters, post-treated carbon filters, UF membrane filters for refining the primary purified water step by step, and nonwoven fabrics disposed between the filters and above and below the case for partitioning the filters, respectively. Composed of a case cap coupled to the upper portion of the case so as not to directly enter into the case Filter module; Filter device for water purifier, characterized in that comprising a. The filter apparatus of claim 1, wherein a drain hole is formed at a lower portion of the housing to directly drain the water inside the housing without passing through the filter module. The method of claim 1, wherein the upper portion of the first groove of the housing is formed while forming an inclined surface to narrow the upper side, the packing of the housing cap may be in close contact with the inclined surface of the housing as the housing and the housing cap is screwed. Filter device for water purifier, characterized in that configured to.

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