KR20230015195A - Multi-stage complex water filter assembly - Google Patents

Abstract

The disclosed content relates to a multi-stage composite water purification filter assembly which is easy to select or adjust a filter media according to the water quality and environment of each region or country, has a low possibility of manufacturing defects despite being provided with an inner housing, and prevents freezing in a low-temperature environment by reducing the amount of water stagnating therein due to the provision of the inner housing. The disclosed content presents the multi-stage composite water filter assembly as one embodiment. The multi-stage composite water filter assembly comprises: a filter housing formed in a cylindrical shape with an upper part open; a filter cap coupled to an upper end of the filter housing, having a water inlet formed in the center, having a water outlet formed in a concentric circle around the water inlet, and having an inner coupling port formed on a lower side of the water inlet; an inner housing inserted into an inner upper side of the filter housing to form a water outlet flow path communicating with the water outlet between the outer peripheral surface and inner peripheral surface of the filter housing and having a coupling pipe unit coupled to the inner coupling port of the filter cap protruding at the open upper end and a lower end; an upper filter inserted into the inner housing and forming a first water flow path communicating with the water inlet between the outer peripheral surface and inner peripheral surface of the inner housing; a lower filter inserted into an inner lower side of the filter housing to form a second water flow path between the outer peripheral surface and the inner peripheral surface of the filter housing; and a flow path switching member provided between the upper filter and the lower filter within the filter housing, guiding water flowing through the upper filter and exiting a lower part to the second water flow path, and guiding water flowing through the lower filter and exiting an upper part to the water outlet flow path. According to the present invention, one of an ion exchange resin filter, a nanofiltration filter (NF), and a silver nano filter (KDF) can be selected and applied.

Description

Multi-stage complex water filter assembly {MULTI-STAGE COMPLEX WATER FILTER ASSEMBLY}

The disclosed content relates to a multi-stage composite water filter assembly in which a plurality of filter members are arranged in one filter housing so that water introduced therein can be purified through multi-stage filtering.

Unless otherwise indicated herein, material described in this section is not prior art to the claims in this application, and inclusion in this section is not an admission that it is prior art.

As water purifiers for household or business use become popular, the types of water purifiers are also changing in various ways according to demand. In particular, small water purifiers that are easy to carry and can be used in various ways in a small space are also widely used.

These water purifiers must include filters of 3 to 4 stages to purify raw water, and the filters require replacement or cleaning at regular intervals. This is the same for small water purifiers. In the case of small water purifiers, the internal space where the filter can be inserted is very narrow, so filter replacement or cleaning is not easy, and a technical expert must visit each time to replace the filter or move its location. Loom occurs.

Recently, many multi-stage composite water filters in which multiple filters are arranged in multiple stages in one filter housing have been developed. As an example of such a multi-stage complex water filter, Korean Patent Registration No. 10-1935595 (published on January 4, 2019) has a cap A filter housing formed with an opening opened and closed by a member; It is coupled to the filter housing, an inlet through which fluid is introduced protrudes, and an inlet into which the fluid injected into the inlet is injected protrudes and is inserted into the filter housing, and the filtered fluid is formed on the surface of the side surface of the inlet. a head portion in which a discharge port through which is discharged is formed; It is coupled to the lower part of the head part and a part of the inlet is inserted, a first discharge hole through which the fluid is discharged is formed on the lower part of the outer surface, and a second discharge hole through which the fluid is discharged is formed on the upper part of the outer surface. A connector portion to be; a first filter member coupled to a lower portion of the connector unit and filtering fluid discharged through the first discharge hole of the connector unit; a second filter member inserted into the first filter member to filter the fluid; and a third filter member installed between the head part and the connector part and filtering the fluid filtered by the second filter member of the connector part and discharged through the second discharge hole of the connector part. is filtered in the first filter member and the second filter member after being discharged through the first discharge hole of the connector part, and after the filtered fluid is discharged through the second discharge hole, in the third filter member. A multi-stage water purification filter is disclosed.

In addition, Republic of Korea Patent Registration No. 10-1762422 (2017.08.04. Notice) includes a filter housing made of a cylindrical body and a cap mounted on an opening of the body; a flow path conversion guide installed inside the cap and having a raw water inlet through which raw water flows in and first and second purified water outlets through which purified water is discharged; a first water filter installed in the lower part of the main body and primarily processing raw water flowing through the raw water inlet; It is installed on the upper part of the main body, and the purified water passing through the first purified water filter is moved to the first purified water outlet through the central purified water movement passage, or the purified water passing through the first purified water filter is secondarily purified. and a second water filter for moving the water to the second water outlet, wherein the second water filter prevents raw water flowing into the filter housing from directly flowing into the second water filter without passing through the first water filter. Disclosed is a filter for a water purifier capable of using a selective material sealed by an inner cylinder to prevent water leakage.

However, in the case of the conventional multi-stage composite water filter as described above, it is impossible to select or adjust the filter material according to the water quality and environment of each region or country, and there is a high possibility that welding or injection molding defects may occur during the manufacture of the filter housing. In particular, there was a problem with a high risk of damage due to freezing in a low temperature environment such as winter.

1. Republic of Korea Patent Registration No. 10-1935595 (2019.01.04. Notice) 2. Republic of Korea Patent Registration No. 10-1762422 (2017.08.04. Notice)

It is easy to select or adjust the filter media according to the water quality and environment of each region or country, and the possibility of manufacturing defects is low despite the internal housing, and the amount of water stagnant inside is reduced due to the internal housing. It is intended to provide a multi-stage composite water filter assembly that can prevent freezing and bursting in a low-temperature environment.

In addition, it is not limited to the technical problems as described above, and it is obvious that other technical problems may be derived from the following description.

Disclosed is a filter housing formed in a cylindrical shape with an open top; a filter cap coupled to an upper end of the filter housing, having an inlet at the center, an outlet concentrically formed around the inlet, and an inner coupling hole formed below the inlet; It is inserted into the inner upper side of the filter housing to form a water outlet passage communicating with the water outlet between the outer circumferential surface and the inner circumferential surface of the filter housing, and a coupling pipe portion coupled to the inner coupling port of the filter cap protrudes from the upper end and is formed open at the lower end. an inner housing; an upper filter which is inserted into and coupled into the inner housing and forms a first water flow passage communicating with the water inlet between an outer circumferential surface and an inner circumferential surface of the inner housing; a lower filter inserted into the inner lower side of the filter housing to form a second water intake passage between an outer circumferential surface and an inner circumferential surface of the filter housing; And it is provided between the upper filter and the lower filter in the filter housing, and guides the water flowing through the upper filter and exiting to the lower part to the second water intake passage, and passing the water through the lower filter and exiting to the upper part. A multi-stage complex water filter assembly including a flow path switching member guiding a water outlet flow path is presented as an embodiment.

According to a preferred feature of the disclosure, detachable coupling steps that enable coupling or separation to the water purifier side protrude from both sides of the water outlet of the filter cap according to the rotational direction.

According to a preferred feature of the disclosed contents, a first internal filter formed of one of an ion exchange resin filter, a nano filtration filter (NF), a silver nano filter (KDF), and a carbon filter is provided inside the upper filter.

According to a preferred feature of the disclosed contents, a second internal filter provided inside the lower filter and formed of one of an ion exchange resin filter, a nanofiltration filter (NF), a silver nanofilter (KDF), and a carbon filter is provided.

According to a preferred feature of the disclosure, the flow path switching member includes an annular upper and lower partition plate supported on an inner wall of the filter housing, and a first protruding vertically from an inner circumferential surface of the annular upper and lower partition plate and coupled to a lower end of the upper filter. A filter coupling ring, a water outlet passage forming pipe arranged across the first filter coupling ring and having both ends penetrating the filter coupling ring, and a first filter provided below the annular upper and lower partition plates and to which the upper end of the lower filter is coupled. 2 includes a filter coupling ring and a water extraction guide tube protruding downward from the center of the annular upper and lower partition plates and communicating with the water extraction passage forming tube.

According to the multi-stage composite water filter assembly according to the disclosed embodiment, an inner housing into which an upper filter is inserted and coupled is assembled on the inner upper side of the filter housing to form a water flow path between the upper filter and the inner housing, and between the inner housing and the filter housing. As it is formed in a structure in which a water outlet flow path is formed, the possibility of manufacturing defects is low despite the provision of an inner housing, and as the amount of water stagnant inside is reduced due to the provision of an inner housing, freezing and bursting can be prevented in a low-temperature environment. There are advantages.

In addition, according to the multi-stage composite water filter assembly according to the disclosed embodiment, the first internal filter provided inside the cylindrical filter member of the upper filter is an ion exchange resin filter, a nano filtration filter ( NF) and silver nanofilter (KDF).

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

1 is a perspective view of a multi-stage composite water filter assembly according to an embodiment of the present disclosure;
2 is an exploded perspective view of a multi-stage composite water filter assembly according to an embodiment of the present disclosure;
3 is a cross-sectional view of a multi-stage composite water filter assembly according to an embodiment of the present disclosure;
4 is an operation diagram of a multi-stage composite water filter assembly according to an embodiment of the present disclosure;

Hereinafter, with reference to the accompanying drawings, look at the configuration and operational effects of the preferred embodiment. For reference, in the drawings below, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, like reference numerals refer to like components throughout the specification, and reference numerals for like components in individual drawings will be omitted.

1 is a perspective view of a multi-stage complex water filter assembly according to an embodiment of the disclosed subject matter, FIG. 2 is an exploded perspective view of the multi-stage complex water filter assembly according to an embodiment of the disclosed subject matter, and FIG. 3 is a perspective view illustrating an embodiment of the disclosed subject matter. It is a cross-sectional view of the multi-stage composite water filter assembly according to the following.

As shown in FIGS. 1 to 3 , a multi-stage composite water filter assembly according to an embodiment of the disclosed subject matter includes a filter housing 10, a filter cap 20, an inner housing 30, an upper filter 40, , It includes a lower filter (50) and a flow path switching member (60).

Here, the filter housing 10 forms a space in which the inner housing 30, the upper filter 40, the lower filter 50, and the passage switching member 60 are accommodated and installed, and at the same time, water purification is maintained due to their accommodation and installation. To form a filtering passage for the filter, it is formed in a tubular shape with an open top, particularly a cylindrical shape.

The filter housing 10 is preferably made of a synthetic resin material, but is not limited thereto and may be formed of various materials such as metal materials according to embodiments.

A filter cap 20 is coupled to an upper end of the filter housing 10 described above. The filter cap 20 serves to close the top of the filter housing 10 and at the same time form a coupling portion detachably coupled to the water purifier. The filter cap 20 may be irremovably coupled to the top of the filter housing 10 by bonding or welding, or detachably coupled to the top of the filter housing 10 by screwing.

In the center of the filter cap 20, an inlet 21 through which water requiring purification is introduced protrudes, and around the inlet 21, water purified by the multi-stage composite water filter assembly according to the embodiment of the present disclosure is formed. The water outlet 23 is protruded slightly lower than the water inlet 21 in the form of a concentric circle.

In addition, on the lower side of the inlet 21, an inner coupling port 25 is formed protruding downward toward the bottom, in which the upper end of the inner housing 30, which will be described later, is coupled by various methods, such as press fitting, for example, and both sides of the outlet port 23 A detachable coupling step 27 is protruded to enable coupling or separation to the water purifier side according to the direction of rotation.

The filter cap 20 is preferably made of a synthetic resin material, but is not limited thereto and may be formed of various materials such as a metal material according to embodiments.

The inner housing 30 is inserted into the inner upper side of the filter housing 10 described above. The inner housing 30 is interposed between the filter housing 10 and the upper filter 40 to be described later, and provides a first water flow path A communicating with the water inlet 21 between the inner circumferential surface and the outer circumferential surface of the upper filter 40. At the same time as forming, it serves to form a water outlet passage C communicating with the water outlet 23 between the outer circumferential surface and the inner circumferential surface of the filter housing 10 . In addition, as the inner housing 30 occupies a certain volume within the filter housing 10, the amount of water stagnant inside the filter housing 10 is reduced by the corresponding volume, thereby preventing freezing and bursting in low-temperature environments such as winter. It also serves to make it possible.

At the upper end of the inner housing 30, a coupling tube portion 31 coupled to the inner coupling hole 25 of the filter cap 20 protrudes, and the lower end of the inner housing 30 is inserted and coupled to the upper filter 40. Formed open for

The inner housing 30 is preferably made of a synthetic resin material, but is not limited thereto and may be formed of various materials such as metal materials according to embodiments.

An upper filter 40 is inserted and coupled into the aforementioned inner housing 30 . The upper filter 40 primarily purifies the water introduced into the inner housing 30 through the inlet 21, and is spaced apart in the inner housing 30 and formed between the outer circumferential surface and the inner circumferential surface of the inner housing 30. A first water flow path (A) communicating with the water inlet 21 is formed.

In the upper filter 40, a closed top cap 43 is coupled to the upper end of the cylindrical filter member 41, and a central open lower cap 45 is coupled to the lower end of the cylindrical filter member 41, and the central open lower cap is coupled to the lower end of the cylindrical filter member 41. At the center of the cap 45, a ring-shaped protrusion 47 that is press-fitted into the filter coupling ring 63 of the passage switching member 60 to be described later protrudes downward.

The cylindrical filter member 41 may be formed as one of conventional water purification filters including a pre-filter made of non-woven fabric, a carbon filter, a hollow fiber membrane filter, and a ceramic filter.

In addition, a first internal filter 49 may be provided inside the upper filter 40, particularly the cylindrical filter member 41. The first internal filter 49 is preferably selected from among an ion exchange resin filter, a nanofiltration filter (NF) and a silver nanofilter (KDF) according to the water quality and environment of each region or country, but according to the embodiment, a carbon filter may be formed as

A lower filter 50 is inserted into the inner lower side of the aforementioned filter housing 10 . The lower filter 50 purifies water treated by the upper filter 40 again, and forms a second water flow path B between the outer circumferential surface and the inner circumferential surface of the filter housing 10 .

The lower filter 50 has a structure in which a closed lower closing cap 53 is coupled to the lower end of the cylindrical filter member 51.

The cylindrical filter member 51 may be formed of one of conventional water purification filters including a pre-filter made of non-woven fabric, a carbon filter, a hollow fiber membrane filter, and a ceramic filter.

In addition, a second internal filter 55 may be provided inside the lower filter 50, particularly the cylindrical filter member 51. The second internal filter 55 is preferably formed of a carbon filter, but may be selected from among an ion exchange resin filter, a nanofiltration filter (NF) and a silver nanofilter (KDF) depending on the water quality and environment of each region or country. there is.

In the aforementioned filter housing 10, a flow path switching member 60 is provided between the upper filter 40 and the lower filter 50. The flow path switching member 60 guides the water flowing through the upper filter 40 and exiting the lower part to the second inlet flow path (B), and the water flowing through the lower filter 50 and exiting the upper part through the water outlet path (C). Corresponds to a double flow path forming member that guides to.

The flow path switching member 60 is formed by protruding vertically from an annular upper and lower partition plate 61 supported on an inner wall of the filter housing 10 and an inner circumferential surface of the annular upper and lower partition plate 61, and the lower end of the upper filter 40, That is, the first filter coupling ring 63 to which the ring-shaped protrusion 47 is coupled is arranged across the first filter coupling ring 63, and the top of the lower filter 50 is coupled to the lower center, and both ends are connected to the first filter coupling ring 63. The water outlet passage forming pipe 65 penetrating the coupling ring 63, the second filter coupling ring 67 provided at the bottom of the annular upper and lower partition plate 61 and coupled to the upper end of the lower filter 50, and the annular It includes a water extraction guide pipe 69 protruding downward from the center of the upper and lower partition plates 61 and communicating with the water extraction passage forming pipe 65.

4 is an operation diagram of a multi-stage composite water filter assembly according to an embodiment of the present disclosure. Referring to FIGS. 1 to 4, the combined operation of the multi-stage complex water filter assembly according to an embodiment of the disclosure is as follows:

As shown in FIG. 4, the water introduced through the inlet 21 of the filter cap 20 passes through the coupling pipe portion 31 of the inner housing 30 coupled to the inner coupling port 25 of the filter cap 20. After flowing into the first water flow path (A) between the inner circumferential surface of the inner housing 30 and the outer circumferential surface of the upper filter 40 through the first water purification while passing through the upper filter 40 from the outside in the radial direction to the inside and, depending on the embodiment, is additionally purified while passing through the first internal filter 49.

The water flowing through the upper filter 40 passes through the filter coupling ring 63 of the flow path switching member 60, and then enters the second water flow path between the inner circumferential surface of the filter housing 10 and the outer circumferential surface of the lower filter 50 ( B), it is secondarily purified while passing through the lower filter 50 from the outside to the inside in the radial direction, and additionally purified while passing through the second internal filter 55 depending on the embodiment.

The water flowing through the lower filter 50 passes through the water outlet guide pipe 69 of the flow path switching member 60 and the water outlet flow path forming pipe 65 between the inner circumferential surface of the filter housing 10 and the outer circumferential surface of the inner housing 30. After flowing into the water outlet passage C, water is finally discharged through the outlet 23 of the filter cap 20.

Therefore, in the multi-stage composite water filter assembly according to an embodiment of the present disclosure, the inner housing 30 into which the upper filter 40 is inserted and coupled is assembled on the inside upper side of the filter housing 10, and the upper filter 40 and the inner housing ( 30) in spite of the provision of the inner housing 30 as it is formed in a structure in which the first intake flow path A is formed between the inner housing 30 and the filter housing 10, and the water outlet flow path C is formed between the inner housing 30 and the filter housing 10. The possibility of manufacturing defects is low, and freezing and bursting can be prevented in a low-temperature environment as the amount of water stagnant inside is reduced due to the provision of the inner housing 30.

In addition, the first internal filter 49 provided inside the cylindrical filter member 41 of the upper filter 40 and the second internal filter 55 provided inside the cylindrical filter member 51 of the lower filter 50 ) may be selected and applied as one of an ion exchange resin filter, a nanofiltration filter (NF), a silver nanofilter (KDF), and a carbon filter according to the water quality and environment of each region or country.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and represent all the technical ideas of the present invention. Since it is not, it should be understood that there may be various equivalents and modifications that can replace them at the time of this application. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from equivalent concepts should be construed as being included in the scope of the present invention.

10: filter housing
20: filter cap
21: inlet
23: outlet
25: inner joint
27: detachable coupling step
30: inner housing
31: coupling pipe
40: upper filter
41: cylindrical filter member
43: closed upper closing cap
45: center open lower closing cap
47: ring-shaped protrusion
49: first internal filter
50: lower filter
51: cylindrical filter member
53: closed lower closing cap
55: 2nd internal filter
60: Euro switching member
61: annular upper and lower partition plate
63: first filter coupling ring
65: outlet flow path formation pipe
67: second filter coupling ring
69: exit guide pipe
A: 1st intake channel
B: 2nd inlet passage
C: outlet flow

Claims (5)

A filter housing formed in a cylindrical shape with an open top;
a filter cap coupled to an upper end of the filter housing, having an inlet at the center, an outlet concentrically formed around the inlet, and an inner coupling hole formed below the inlet;
It is inserted into the inner upper side of the filter housing to form a water outlet passage communicating with the water outlet between the outer circumferential surface and the inner circumferential surface of the filter housing, and a coupling pipe portion coupled to the inner coupling port of the filter cap protrudes from the upper end and is formed open at the lower end. an inner housing;
an upper filter which is inserted into and coupled into the inner housing and forms a first water flow passage communicating with the water inlet between an outer circumferential surface and an inner circumferential surface of the inner housing;
a lower filter inserted into the inner lower side of the filter housing to form a second water intake passage between an outer circumferential surface and an inner circumferential surface of the filter housing; and
It is provided between the upper filter and the lower filter in the filter housing, and guides water flowing through the upper filter and exiting to the lower portion to the second water intake passage, and water flowing through the lower filter and exiting to the upper portion is discharged. A multi-stage composite water filter assembly including a flow path switching member guiding the flow path. The method of claim 1,
A multi-stage composite water filter assembly, characterized in that detachable coupling steps are protruded on both sides of the water outlet of the filter cap to enable coupling or separation to the water purifier side according to the rotation direction. The method of claim 1,
A multi-stage composite water filter assembly, characterized in that the inside of the upper filter is provided with a first internal filter formed of one of an ion exchange resin filter, a nano filtration filter (NF), a silver nano filter (KDF) and a carbon filter. The method of claim 2,
A multi-stage composite water filter assembly, characterized in that the inside of the lower filter is provided with a second internal filter formed of one of an ion exchange resin filter, a nano filtration filter (NF), a silver nano filter (KDF) and a carbon filter. According to any one of claims 1 to 3,
The channel switching member includes an annular upper and lower partition plate supported on an inner wall of the filter housing, a first filter coupling ring protruding vertically from an inner circumferential surface of the annular upper and lower partition plate and coupled to a lower end of the upper filter, and the filter coupling unit. A water outlet passage forming tube arranged across the ring and having both ends penetrating the filter coupling ring, a second filter coupling ring provided below the annular upper and lower partition plate and coupled to an upper end of the lower filter, and the annular upper and lower compartments A multi-stage complex water filter assembly comprising a water outlet guide pipe protruding downward from the center of the plate and communicating with the water outlet flow path forming pipe.

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