CN114728224A

CN114728224A - Composite filter assembly and water purifier having the same

Info

Publication number: CN114728224A
Application number: CN202080080334.8A
Authority: CN
Inventors: 李炫揆; 文太勋; 韩斗元
Original assignee: Kaweiyi Co ltd
Current assignee: Kaweiyi Co ltd
Priority date: 2019-11-19
Filing date: 2020-11-17
Publication date: 2022-07-08
Also published as: KR20210060973A; WO2021101194A1

Abstract

The present invention provides a composite filter assembly comprising: a filter housing formed with a first inflow port, a first outflow port, a second inflow port, and a second outflow port, a first filter part accommodated in the filter housing and filtering water flowing in through the first inflow port, a second filter part accommodated in the filter housing and positioned in a vertical direction with respect to the first filter part and filtering water flowing in through the second inflow port, and a flow path separating member dividing a water flow path passing through the first filter part and a water flow path passing through the second filter part; the filter case includes a recess formed to be recessed from one end toward the other end in a longitudinal direction of the filter case, the first inlet and the first outlet are formed in the recess, the first outlet allows purified water filtered by the first filter unit to be discharged therethrough, the second outlet allows purified water filtered by the second filter unit to be discharged therethrough, and the first inlet, the first outlet, the second inlet, and the second outlet are formed in the filter case to face in the same direction.

Description

Composite filter assembly and water purifier having the same

Technical Field

The present invention relates to a composite filter assembly in which a plurality of filters are integrated and a water purifier having the same, and more particularly, to a composite filter assembly having a plurality of inflow ports and a plurality of outflow ports and a water purifier having the same.

Background

A water purifier is a device that filters inflow water, discharges the filtered inflow water to the outside, and provides drinking water to a user.

Such a water purifier uses three or more separate filters in combination in order to filter inflow water to be treated (e.g., raw water), which causes problems in that a product system is complicated, the volume occupied by the filters in the product is increased, and the overall size of the product is increased.

In order to solve such a problem, a technique of using two filters in a composite manner has been proposed. For example, an integrated composite filter module in which a sediment filter and a pre-activated carbon filter are used as a pretreatment filter, or a composite filter module in which a pre-activated carbon filter and a hollow fiber membrane filter are integrated, has been used.

However, the composite filter assembly of the related art has one inflow port and one outflow port, and has a shape in which a plurality of filters are arranged in series in a flow path inside. That is, the related art composite filter assembly is constructed in a structure in which water flowing in through the inflow port is filtered by the first filter, and then the water filtered from the first filter flows into the second filter again and is filtered, and finally is discharged through the outflow port.

The conventional composite filter assembly has a problem in that, since the replacement cycle of the filter accommodated therein is different, the composite filter assembly must be replaced as a whole when a part of the filters reach the replacement cycle, and thus the filter which has not reached the end of its life must be replaced.

In addition, the prior art composite filter assembly has a problem in that since a plurality of filters are disposed in series, other filters or assemblies cannot be installed between the filters.

Documents of the prior art

Patent document 1KR 10-2003-

Patent document 2KR 10-2008-0101567A

Patent document 3KR 10-2009-

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve at least some of the above-described problems of the prior art, and an object of the present invention is to provide a composite filter assembly having a plurality of filter units, a plurality of inflow ports, and a plurality of outflow ports, and a water purifier including the composite filter assembly.

In addition, it is an aspect of the present invention to provide a composite filter assembly that can easily perform an operation of installing the composite filter assembly in a flow path of a water purifier or separating the composite filter assembly from the flow path of the water purifier, and a water purifier having the same.

Another aspect of the present invention is to provide a composite filter assembly having a high degree of freedom in a flow path structure, and a water purifier including the composite filter assembly.

In addition, an aspect of the present invention is to provide a composite filter assembly that can diversify a composite filter, and a water purifier having the same.

Also, an aspect of the present invention is to provide a composite filter assembly that can combine filters having similar filter replacement cycles, and a water purifier having the same.

In addition, it is an aspect of the present invention to provide a composite filter assembly that can reduce the total number of filters included in a water purifier and can achieve miniaturization of products, and a water purifier having the same.

Also, it is an aspect of the present invention to provide a composite filter assembly that can improve management efficiency by reducing the number of filters to be replaced, and a water purifier having the same.

Means for solving the problems

As one aspect to achieve the above object, the present invention provides a composite filter assembly comprising: a filter housing formed with a first inflow port, a first outflow port, a second inflow port, and a second outflow port, a first filter part accommodated inside the filter housing for filtering water flowing in through the first inflow port, a second filter part accommodated inside the filter housing, positioned in a vertical direction with respect to the first filter part, for filtering water flowing in through the second inflow port, and a flow path separating member for dividing a flow path of water flowing through the first filter part and a flow path of water flowing through the second filter part; the filter case includes a recess formed to be recessed from one end toward the other end in a longitudinal direction of the filter case, the first inlet and the first outlet are formed in the recess, the first outlet allows purified water filtered by the first filter unit to be discharged therethrough, the second outlet allows purified water filtered by the second filter unit to be discharged therethrough, and the first inlet, the first outlet, the second inlet, and the second outlet are formed in the filter case to face in the same direction.

The filter housing may include: a first space portion having an inner space with a circular cross section; and a second space portion having an inner space surrounding the recess and having an annular cross section.

Further, the first filter part may be accommodated in the first space part, the second filter part may be accommodated in the second space part, and the flow path separating member may be provided between the first filter part and the second filter part to be able to divide the first space part and the second space part.

In addition, the recess is formed in a lower portion of the filter housing, the first filter unit is accommodated in an upper portion of the filter housing, and the second filter unit is accommodated in a lower portion of the filter housing. In this case, a connection flow path is formed between the first filter unit and the second filter unit, the connection flow path allowing water to flow into the first filter unit or allowing water to flow out of the first filter unit, and the flow path separation member allows an upper end of the second filter unit to be separated from the connection flow path. In addition, the flow path separating member may be configured as an upper cover to support an upper end of the second filter part.

Further, the first inflow port, the first outflow port, the second inflow port, and the second outflow port may be formed on the filter housing to face downward of the filter housing.

In addition, the second inflow port and the second outflow port may be formed at a lower surface of the filter housing. Or, unlike this, the first inflow port, the first outflow port, the second inflow port, and the second outflow port may be formed on the recess.

Further, each end of the first inflow port, the first outflow port, the second inflow port, and the second outflow port may have the same height.

In addition, the first inflow port, the first outflow port, the second inflow port, and the second outflow port may have a shape protruding from a surface of the filter housing or a shape recessed.

Further, at least one of the first filter portion and the second filter portion may be configured as a composite filter provided with a plurality of filter elements connected in series in a flow path.

In addition, any one of the first filter unit and the second filter unit may be configured as a pre-treatment filter, and the other one may be configured as a post-treatment filter.

Further, a first inflow passage may be formed radially outward of the first filter section, and a first outflow passage may be formed at a central portion thereof, and a second inflow passage may be formed radially outward of the second filter section, and a second outflow passage may be formed at a central portion thereof.

The filter housing may be integrally formed with a housing body and a housing cover coupled to the housing body, and the second filter unit, the flow path separating member, and the first filter unit may be sequentially stacked from bottom to top in an internal space of the integrally formed filter housing.

Another aspect of the present invention provides a water purifier including: a composite filter assembly as described above, and a main filter capable of filtering finer particles than the filter material in the composite filter assembly; the water to be treated can be provided to a user through a flow path passing through any one of the first and second filter parts of the composite filter assembly, the main filter, and the remaining one of the first and second filter parts.

Further, a water purifier according to an aspect of the present invention further includes: a composite filter mounting portion including connection ports corresponding to the first inlet port, the first outlet port, the second inlet port, and the second outlet port, respectively; and the first inlet, the first outlet, the second inlet and the second outlet of the composite filter assembly are combined with the connecting port in a plugging manner, so that a plurality of flow paths can be connected at one time.

At this time, the connection port may have a concave or convex shape corresponding to the first inflow port, the first outflow port, the second inflow port, and the second outflow port, respectively, to be capable of being coupled to the first inflow port, the first outflow port, the second inflow port, and the second outflow port by plugging.

The first filter unit may be a pre-treatment filter provided in a flow path at a front end of the main filter, and the second filter unit may be a post-treatment filter provided in a flow path at a rear end of the main filter.

In addition, the water purifier may be configured such that the purified water discharged through the first outlet of the composite filter assembly flows into the second inlet through the main filter, or the purified water discharged through the second outlet of the composite filter assembly flows into the first inlet through the main filter.

In addition, a branch flow path may be provided in a flow path at a front end of the main filter, the branch flow path enabling purified water supplied from the composite filter assembly to the main filter to be supplied to a user without passing through the main filter.

On the other hand, the water purifier according to another aspect of the present invention may further include a pressure applying part provided on a flow path at a front end of the main filter to be capable of applying pressure to the water supplied to the main filter, the main filter including a reverse osmosis membrane filter.

Effects of the invention

According to an embodiment of the present invention having such a configuration, in the case where a plurality of filter sections are combined, an effect that a plurality of inflow ports and a plurality of outflow ports can be provided can be obtained.

Also, according to an embodiment of the present invention, an effect of easily installing or separating the composite filter assembly in or from the flow path of the water purifier can be obtained.

In addition, according to an embodiment of the present invention, there is an effect that the degree of freedom of the flow path structure is high.

Further, according to an embodiment of the present invention, an effect of diversifying the filters that can realize the composite can be obtained.

In addition, according to an embodiment of the present invention, it is possible to combine filters having similar filter replacement cycles.

Also, according to an embodiment of the present invention, it is possible to obtain an effect of reducing the entire number of filters provided in the water purifier and achieving miniaturization of products.

In addition, according to an embodiment of the present invention, there is an effect of reducing the number of replaced filters, so that the efficiency of management can be improved.

Drawings

Fig. 1 is a perspective view of a composite filter assembly according to an embodiment of the present invention, in which a portion is a perspective view in an upper direction and a portion b is a perspective view in a lower direction.

Fig. 2 is a sectional view of the composite filter assembly shown in fig. 1 taken along line I-I' of portion a of fig. 1.

Fig. 3 is a sectional view illustrating an exploded state of the composite filter assembly shown in fig. 2.

Fig. 4 is a cross-sectional view in which a part in the vertical direction is omitted to enlarge and show the cross-sectional view shown in fig. 2.

Fig. 5 is a schematic view illustrating a composite filter assembly and a composite filter mounting part of a water purifier shown in fig. 1.

Fig. 6 is a cross-sectional view of a modified example of the composite filter assembly shown in fig. 2, taken along line I-I' of portion a of fig. 1.

Fig. 7 is a water piping diagram of an embodiment of the water purifier having the composite filter assembly shown in fig. 1.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiment of the present invention may be modified into various other forms, and the scope of the present invention is not limited by the embodiments described below. In addition, embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. In the drawings, the shapes and sizes of elements may be exaggerated for clarity of description.

In addition, in this specification, the singular forms also include the plural forms unless the context clearly dictates otherwise, and the same reference numerals denote the same or corresponding elements throughout the specification.

In addition, in the present specification, the terms "first" and "second" are used only for distinguishing and referring to two similar elements, and do not mean that "first" and "second" are sequentially arranged.

In particular, it should be understood in advance that in the present specification including the claims, expressions such as upper side, lower side, front, rear, and the like are expressed based on the directions shown in the drawings, and may be expressed differently if the direction of an applicable object is changed.

Hereinafter, embodiments of the composite filter assembly 100 according to the present invention and embodiments of the water purifier 10 having the composite filter assembly 100 will be described with reference to the accompanying drawings.

Embodiments of composite filter assembly 100

First, a composite filter assembly 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 5.

Fig. 1 is a perspective view of a composite filter assembly 100 according to an embodiment of the present invention, in which a portion a of fig. 1 is a perspective view in an upper side direction and a portion b of fig. 1 is a perspective view in a lower side direction; FIG. 2 is a cross-sectional view of the composite filter assembly 100 shown in FIG. 1, taken along line I-I' of section a of FIG. 1; fig. 3 is a sectional view illustrating an exploded state of the composite filter assembly 100 shown in fig. 2; fig. 4 is a sectional view in which a part in the up-down direction is omitted to enlarge and show the sectional view shown in fig. 2; fig. 5 is a schematic view illustrating the composite filter assembly 100 and the composite filter mounting part F of the water purifier 10 shown in fig. 1; fig. 6 is a cross-sectional view of a modified example of the composite filter assembly shown in fig. 2, taken along line I-I' of portion a of fig. 1.

As shown in fig. 1 to 5, a composite filter assembly 100 according to an embodiment of the present invention may be configured to include a filter housing 101, a first filter section 110, a second filter section 120, and a flow path separation member 130.

First, the filter housing 101 may be integrally formed by the housing main body 102 and the housing cover 103 coupled thereto.

Also, as shown in fig. 1 to 4, the case main body 102 and the case cover 103 are joined at a joint portion 104. Such a joint portion 104 can be formed, for example, by forming a welding rib on either side of the case main body 102 and the case cover 103 and forming a welding groove for accommodating the welding rib on the other side, and thereafter rotating the case main body 102 and the case cover 103 relative to each other so that the welding rib is fused into the welding groove as the outer peripheral surface rubs against the inner peripheral surface of the welding groove. However, as long as the waterproof between the case main body 102 and the case cover 103 can be achieved, the manner of joining the case main body 102 and the case cover 103 is not limited to the fusion joining described above, and various modifications are possible.

Although it is illustrated in fig. 1 to 4 that the housing main body 102 is located at the lower side and the housing cover 103 is located at the upper side, the position thereof may be changed. In addition, although it is illustrated in fig. 1 to 4 that the welding rib is formed in the case main body 102 and the welding groove is formed in the case cover 103, the positions of the welding rib and the welding groove may be changed. In addition, although it is shown in fig. 1 to 4 that the housing cover 103 is coupled to the upper side of the housing main body 102, the filter housing 101 may have a structure in which the housing cover 103 is respectively formed on the upper side and the lower side of the housing main body 102, and the housing main body 102 may also be manufactured in two or more, and then integrally coupled, as long as an inner space may be formed in the filter housing 101 by the coupling of the housing main body 102 and the housing cover 103.

Further, the filter housing 101 may include a recess 105, and the recess 105 is formed with a depression of a predetermined depth from one end (lower portion in fig. 2) to the other end in the length direction of the housing main body 102. Such a recess 105 may be integrally formed with the housing main body 102 or the housing cover 103 when the housing main body 102 or the housing cover 103 is molded.

As shown in fig. 1 to 5, such a recess 105 may be formed in the lower portion of the filter housing 101, but is not limited thereto, and the recess 105 may be formed in the upper portion of the filter housing 101. However, for convenience of description, a case where the recess 105 is formed at the lower portion of the filter housing 101 as shown in fig. 1 to 5 will be explained as an example.

On the other hand, as shown in fig. 2 and 3, the filter housing 101 may include: a first space portion a1 having an internal space with a circular cross section; and a second space portion a2 having an inner space surrounding the recess 105 and having an annular cross section.

An inflow port (first inflow port P1) and an outflow port (first outflow port P2) which will be described later may be formed on the concave surface 106 of such a concave portion 105.

On the other hand, fig. 2 to 5 show that the first inflow port P1 and the first outflow port P2 connected to the first filter portion 110 are formed on the concave surface 106 of the concave portion 105, but the second inflow port P3 and the second outflow port P4 connected to the second filter portion 120 may also be formed on the concave portion 105.

Further, the first and second flow inlet and outlet ports P1 and P2 connected to the first filter portion 110 and the second and second flow inlet and outlet ports P3 and P4 connected to the second filter portion 120 may be formed at the concave surface 106 of the recess 105. That is, the flow path of the second filter unit 120 is changed by changing the internal flow path of the second space portion a2 to connect the second inlet P3 and the second outlet P4, so that four inlet/outlet ports, i.e., the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4, can be simultaneously installed in the concave surface 106. At this time, in consideration of the narrow area of the concave surface 106, the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 may be arranged in a rectangular shape, but are not limited thereto, and they may be arranged in a straight line (in a line) or a zigzag shape.

As described above, by forming the recess 105 in the filter case 101 and forming the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) on the concave surface 106, the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) can be exposed to the outside through the recess 105. Therefore, the pipe can be connected to the inlet port (the first inlet port P1 and/or the second inlet port P3) and the outlet port (the first outlet port P2 and/or the second outlet port P4) through the recess 105 having an open structure below the filter case 101, and thus the pipe can be easily connected.

Further, when the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) are formed on the concave surface 106 and the end portions of the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) are not exposed to the outside of the lower surface 109 of the filter housing 101, the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) can be prevented from being damaged or broken during distribution or handling. That is, in order to replace the composite filter assembly 200, the composite filter assembly 100 needs to be distributed or delivered to a user, and the inflow port (the first inflow port P1 and/or the second inflow port P3) and the outflow port (the first outflow port P2 and/or the second outflow port P4) can be prevented from being damaged or broken in the above process.

Hereinafter, for convenience of description, a structure in which the first inlet P1 and the first outlet P2 are formed in the recess 105 will be described as an example.

In addition, in the filter housing 101, there may be formed: a first inlet P1 through which the supply water flows into the first filter unit 110; a first outflow port P2 through which water filtered by the first filter unit 110 flows; a second inlet port P3 through which the supply water flows into the second filter unit 120; and a second outflow port P4 through which water filtered from the second filter portion 120 flows. On the other hand, although fig. 1 to 5 show a configuration in which the second flow outlet P4, the first flow inlet P1, the first flow outlet P2, and the second flow inlet P3 are arranged in a straight line in the left-to-right direction, the order of arrangement of the first flow inlet P1, the first flow outlet P2, the second flow inlet P3, and the second flow outlet P4 is not limited thereto, and may be changed according to the structures of the first filter portion 110 and the second filter portion 150 provided inside the filter case 101. The shapes of the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 are not limited to the linear arrangement, and may be changed to various shapes such as a zigzag shape or a square shape.

Further, in order to facilitate the connection of the internal flow path of the water purifier 10 to the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4, respectively, or the separation operation from the internal flow path of the water purifier 10, the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 may be formed to face the same direction in the filter housing 101. For example, as shown in fig. 1 to 5, the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 may be formed toward a lower direction of the filter housing 101. With this configuration, as shown in fig. 5, the filter housing 101 can be easily attached to the composite filter mounting portion F in a state where the lower side of the filter housing 101 is disposed toward the composite filter mounting portion F inside the water purifier 10.

Further, the first inflow port P1 and the first outflow port P2 may be formed at the concave surface 106 of the concave portion 105, and the second inflow port P3 and the second outflow port P4 may be formed at one surface of the filter housing 101, that is, may be formed at the lower surface 109 of the filter housing 101, and may be disposed in a straight line (aligned in a row) when viewed from the bottom.

As shown in fig. 1 to 4, the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 may be configured to face downward of the filter casing 101, but may be configured to face upward. Further, although it is illustrated in fig. 1 to 4 that the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 are formed on the case body 102, the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 may be formed on the case cover 103 when the case body 102 is located at an upper side of the filter case 101 and the case cover 103 is located at a lower side of the filter case 101. Further, as described above, the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 may be formed on the concave surface 106 of the concave portion 105.

As described above, the internal flow paths of the composite filter assembly 100 and the water purifier 10 can be easily connected or the composite filter assembly 100 and the internal flow path of the water purifier 10 can be easily separated by at least some of the configurations relating to the positions where the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 are provided. For example, as shown in fig. 5, the composite filter mounting portion F includes a first inflow side connection port Q1, a first outflow side connection port Q2, a second inflow side connection port Q3, and a second outflow side connection port Q4, which correspond to the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4, respectively. In this case, the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 of the composite filter assembly 100 are respectively plug-coupled with the corresponding connection ports (the first inflow side connection port Q1, the first outflow side connection port Q2, the second inflow side connection port Q3, and the second outflow side connection port Q4) to achieve a plurality of flow path connections at a time, so that an effect that an operation of mounting or separating the composite filter assembly 100 on or from the flow path of the water purifier 10 can be easily performed can be obtained.

On the other hand, the second inlet port P3 and the second outlet port P4 are formed in the lower surface 109 of the filter case 101, and the first inlet port P1 and the first outlet port P2 are formed in the concave surface 106 of the concave portion 105 formed by being recessed from the lower surface 109 of the filter case 101. Thus, the installation positions (heights) of the first and second inflow ports P1 and P2 formed on the concave surface 106 and the second and third outflow ports P3 and P4 formed on the lower surface 109 are different. In view of this, the extension pipes C1 and C2 may be connected at the first inflow side connection port Q1 and the first outflow side connection port Q2 so as to be connected with the first inflow port P1 and the first outflow port P2 spaced apart from the lower surface of the filter housing 101. Such extension pipes C1, C2 may have a configuration in which the ends thereof form connection ports (the first inflow-side connection port Q1, the first outflow-side connection port Q2), but are not limited thereto. For example, the connection ports (the first inflow side connection port Q1, the first outflow side connection port Q2) may be formed on the same plane (height) as the other connection ports (the second inflow side connection port Q3, the second outflow side connection port Q4), and may be connected to the connection ports (the first inflow side connection port Q1, the first outflow side connection port Q2) of the composite filter mounting portion F after the extension tubes C1, C2 are connected to the inflow port (the first inflow side inlet P1) and the outflow port (the first outflow port P2) of the composite filter assembly 100 in advance.

Also, the respective ends of the first and second inflow ports P1, P2, P3, and P4 may have the same height (i.e., may be formed on the same plane). To this end, as shown in fig. 6, the first inflow port P1 may have a structure extended through the first port extension pipe PC1, and the first outflow port P2 may have a structure extended through the second port extension pipe PC 2. At this time, the first and second port extension pipes PC1 and PC2 may be integrally formed with the filter housing 101 to ensure convenience and/or rigidity of manufacture, but are not limited thereto, and may also be connected to the filter housing 101 after being manufactured as separate components, for example.

As described above, when the end portions of the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 are formed on the same plane, the extension pipes C1 and C2 shown in fig. 5 do not need to be mounted, and thus, when the filter case 101 is mounted to the composite filter mounting portion F, the extension pipes C1 and C2 having a protruding structure can be prevented from being damaged.

On the other hand, as shown in fig. 1 to 5, the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 have shapes protruding from the surface (the concave surface 106, the lower surface 109) of the filter housing 101, and, as shown in fig. 5, the connection ports (the first inlet side connection port Q1, the first outlet side connection port Q2, the second inlet side connection port Q3, the second outlet side connection port Q4) corresponding to the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4, respectively, have shapes recessed. However, the protruding shape and the recessed shape may be reversely provided as long as both have a structure of being inserted and coupled to each other, or may have a configuration in which the protruding shape and the recessed shape are combined with each other. For example, the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 may have a concave shape on the surface (concave surface 106, lower surface 109) of the filter housing 101, and the connection ports (first inflow side connection port Q1, first outflow side connection port Q2, second inflow side connection port Q3, second outflow side connection port Q4) corresponding to the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4, respectively, may have a convex shape, and may have a structure in which both are plug-coupled to each other. As described above, when the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 have a shape recessed in the surface (the concave surface 106, the lower surface 109) of the filter case 101, since the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 do not protrude to the outside of the filter case 101, damage or breakage during distribution or transportation can be prevented. That is, in order to replace the composite filter assembly 200, the composite filter assembly 100 needs to be distributed or delivered to a user, and damage or breakage of the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 can be prevented in this process.

On the other hand, as described above, the second space portion a2 forms an inner space in a ring-shaped cross section surrounding the concave portion 105 at the center thereof, and thus the space corresponding to the concave portion 105 may have a filled shape so as to form the second space portion a 2. For example, as shown in fig. 6, when the first inlet port P1 and the first outlet port P2 connected to the first filter unit 110 are arranged to extend toward the lower surface 109 side of the filter housing 101 and a pipe can be connected to the first inlet port P1 and the first outlet port P2 outside the filter housing 101, the space of the recess 105 other than the port extension pipes (the first port extension pipe PC1 and the second port extension pipe PC2) may be filled. As described above, the recess 105 can make the first inlet P1 and the first outlet P2 communicating with the first filter unit 110 on the upper side of the filter housing 101 connectable by a pipe by forming a flow path at the center position on the lower side of the filter housing 101. Therefore, as shown in fig. 2 and 6, in the composite filter assembly 100 according to an embodiment of the present invention, the recess 105 is not limited to have a hollow structure, and if a space corresponding to the recess 105 can be connected to the first filter part 110 by a piping method, a form in which at least a portion of the space corresponding to the recess 105 is filled is not excluded.

In addition, the first filter part 110 is accommodated inside the filter housing 101, and filters water flowing in through the first inflow port P1. The purified water filtered by the first filter portion 110 may be discharged through the first outflow port P2. In this case, the first filter part 110 may include: a first filter material 111 for filtering water; a first upper cover 113 coupled to an upper portion of the first filter material 111 to support the first filter material 111; and a first lower side cover 115 coupled to a lower portion of the first filter material 111 to support the first filter material 111.

Further, the second filter part 120 is received inside the filter housing 101 to be positioned in a vertical direction with respect to the first filter part 110, and filters the water flowing in through the second inflow port P3. The purified water filtered by the second filter portion 120 may be discharged through the second outflow port P4. At this time, the second filter part 120 may include: a second filter material 121 for filtering water; and a second lower cover 125 coupled to a lower portion of the second filter material 121 to support the second filter material 121.

Referring to fig. 2 to 4, although the first and

second filter parts

110 and 120 are shown in the drawings to be disposed at the upper and lower portions of the filter housing 101, respectively, the positions thereof are not limited thereto. However, hereinafter, for convenience of description, as shown in fig. 2 to 4, description will be made taking an example in which the first filter part 110 is accommodated in an upper portion of the filter housing 101 and the second filter part 120 is accommodated in a lower portion of the filter housing 101.

As described above, when the recess 105 is formed at the lower portion of the filter housing 101, the first space portion a1 is formed at the upper portion of the filter housing 101, and the second space portion a2 is formed at the lower portion of the filter housing 101. Thereby, the first filter unit 110 is accommodated in the first space portion a1 of the upper portion of the filter housing 101, and the second filter unit 120 is accommodated in the second space portion a2 of the lower portion of the filter housing 101.

On the other hand, although fig. 1 to 4 and 6 show that the inside of the filter housing 101 accommodates two filter sections, that is, the first filter section 110 and the second filter section 120, the number of filter sections provided inside the filter housing 101 is not limited to two, and three or more filter sections may be accommodated. As described above, when three or more filter sections are accommodated in the filter housing 101, the number of inflow ports and outflow ports corresponding to the number of filter sections may be formed in the filter housing 101.

In the present specification, the terms "first" and "second" are used to indicate that the first filter unit 110 and the second filter unit 120 are different members, and therefore, the first filter unit 110 may be located upstream or downstream of the second filter unit 120 in the order of water flow, that is, when provided in a flow path. However, for convenience of explanation, in the water piping diagram of fig. 7 which will be described later, an example is shown in which the first filter section 110 is located upstream of the second filter section 120 on the flow path, and the flow direction of water shown in fig. 4 is based on the water piping diagram of fig. 7.

The first filter material 111 constituting the first filter unit 110 and the second filter material 121 constituting the second filter unit 120 may be selected from single filter elements, and may be selected from known filter materials such as a sediment filter, a pre-activated carbon filter, a post-activated carbon filter, an antibacterial filter, various functional filters, a reverse osmosis membrane filter (RO membrane filter), a hollow fiber membrane filter, and a nano filter (nano trap).

At this time, since the first filter material 111 constituting the first filter part 110 and the second filter material 121 constituting the second filter part 120 may be constituted by filters having similar filter replacement cycles, the use efficiency of the composite filter assembly 100 may be maximized.

On the other hand, although the first filter material 111 constituting the first filter part 110 and the second filter material 121 constituting the second filter part 120 may include only one of the above-described filter elements, respectively, at least a portion of the first filter material 111 constituting the first filter part 110 and the second filter material 121 constituting the second filter part 120 may be constituted by composite-bonding two or more filter elements. In this way, when the first filter part 110 and/or the second filter part 120 is constructed of a composite filter in which two or more filter elements are compositely combined, two or more filter elements compositely included in the first filter part 110 and/or the second filter part 120 may be disposed in series on the flow path.

For example, any one of the first and

second filter sections

110 and 120 may be configured as a pre-treatment filter and the other may be configured as a post-treatment filter, and the pre-treatment filter may be configured as a composite filter of a sediment filter and a pre-activated carbon filter, and the post-treatment filter may be configured as a single filter or a composite filter including a post-activated carbon filter. When the first filter unit 110 is configured as a pre-treatment filter (composite filter) including a sediment filter and a pre-carbon filter, water flowing into the first filter unit 110 through the first inflow port P1 passes through the sediment filter and is filtered, and then passes through the filter and is filtered again, and then may flow out through the first outflow port P2. In order to form such a flow path in the serial direction, two or more filter elements may be stacked in a vertical direction when the flow direction of water is from top to bottom, and two or more filter elements may be disposed in a radial direction when the flow direction of water is a radial direction.

As described with reference to fig. 2 to 4, the first filter part 110 may be provided in the first space part a1 corresponding to the upper part of the filter housing 101, and the second filter part 120 may be provided in the second space part a2 corresponding to the lower side of the filter housing 101. In this case, the flow path of water flowing through the first filter part 110 and the flow path of water flowing through the second filter part 120 may be separated from each other by the flow path separation member 130. That is, a connection flow path LLC for allowing the supply water to flow into the first filter unit 110 or allowing the supply water to flow out of the first filter unit 110 is formed between the lower side of the first filter unit 110 and the upper side of the second filter unit 120, and the flow path separation member 130 separates the connection flow path LLC communicated with the first filter unit 110 from the flow path of the second filter unit 120. Thus, the flow path separation member 130 divides the flow path (the first inflow flow path LL1, the first outflow flow path LL2, the connection flow path LLC) communicating with the first filter unit 110 and the flow path (the second inflow flow path LL3, the second outflow flow path LL4) communicating with the second filter unit 120.

Referring to fig. 2 to 4, the flow path separation member 130 is disposed at a position adjacent to the concave surface 106 of the concave portion 105 to partition the first space portion a1 and the second space portion a 2. That is, the flow passage separating member 130 closes the upper end of the second space part a2 such that the upper end of the second filter part 120 received in the second space part a2 is separated from the connection flow passage LLC.

In addition, as described above, the second filter unit 120 is accommodated in the second space portion a2 at the lower portion of the filter housing 101, the first filter unit 110 is accommodated in the first space portion a1 at the upper portion of the filter housing 101, and the flow path separating member 130 is provided between the first filter unit 110 and the second filter unit 120. Therefore, as shown in fig. 3, in the internal space of the filter housing 101 configured integrally, the second filter unit 120, the flow path separation member 130, and the first filter unit 110 are stacked in this order from the bottom to the top of the filter housing 101.

As shown in fig. 2 to 4, the first filter portion 110 may form a first inflow passage LL1 at a radially outer side and may form a first outflow passage LL2 at a central portion. As described above, when the area into which the supplied water flows is wide, the contact area between the first filter material 111 of the first filter unit 110 and the inflowing water is increased, and thus the first filter material 111 can be used as a whole, thereby improving the use efficiency of the filter. In addition, water flowing into the first inflow port P1 is supplied to the first inflow flow path LL1 through the connection flow path LLC and moves to the first outflow flow path LL2 after being filtered in the first filter material 111, and then can be discharged to the first outflow port P2 through the discharge port 116 of the first lower side cover 115. At this time, the flow path separation member 130 may be configured to separate the connection flow path LLC from the upper end of the second filter unit 120.

Also, as shown in fig. 2 to 4, the second filter portion 120 may form a second inflow passage LL3 at a radially outer side and may form a second outflow passage LL4 at a central portion. As described above, when the area into which the supplied water flows is wide, the contact area between the second filter material 121 of the second filter unit 120 and the inflow water is increased, and thus the second filter material 121 can be used as a whole, thereby improving the use efficiency of the filter. In addition, the water flowing into the second inlet P3 may flow into the radially outer portion of the second filter element 121 of the second filter unit 120 through the second inflow flow path LL 3. Then, the purified water filtered by moving from the radially outer side to the radially inner side (center portion) of the second filter element 121 can be discharged through the second outflow port P4 after moving to the second outflow path LL 4.

On the other hand, in fig. 2 to 4, although it is illustrated that the first inflow passage LL1 is formed on the radially outer side of the first filter portion 110, the first outflow passage LL2 is formed in the center portion, the second inflow passage LL3 is formed on the radially outer side of the second filter portion 120, and the second outflow passage LL4 is formed in the center portion, the positions of the above-described first inflow passage LL1 and first outflow passage LL2, and the positions of the second inflow passage LL3 and second outflow passage LL4 may be formed in the opposite direction to the positions shown in fig. 2 to 4. The positions and the order of the first inlet P1 connected to the first inflow channel LL1, the first outlet P2 connected to the first outflow channel LL2, the second inlet P3 connected to the second inflow channel LL3, and the second outlet P4 connected to the second outflow channel LL4 may be changed to various forms according to the arrangement configurations of the first inflow channel LL1, the first outflow channel LL2, the second inflow channel LL3, and the second outflow channel LL 4.

On the other hand, the flow path separation member 130 may be provided separately from the constituent elements of the first filter unit 110 or the second filter unit 120, but may be formed of an upper cover supporting the upper end of the second filter material 121 of the second filter unit 120 in order to reduce the number of components. That is, the flow path separation member 130 may separate the flow paths (the first inflow path LL1, the first outflow path LL2, and the connection flow path LLC3) communicating with the first filter unit 110 from the flow paths (the second inflow path LL3 and the second outflow path LL4) communicating with the second filter unit 120, and may also serve to support the upper end of the second filter material 121. At this time, as shown in fig. 3, the flow path separation member 130 may be accommodated in the second space portion a2 of the filter case 101 in a state of being joined to the upper end of the second filter material 121.

Embodiments of Water purifier 10

Next, an embodiment of the water purifier 10 including the composite filter assembly 100 described with reference to fig. 1 to 5 will be described with reference to fig. 7.

Fig. 7 is a water piping diagram of an embodiment to which the water purifier 10 having the composite filter assembly 100 shown in fig. 1 is applied.

As shown in fig. 7, the water purifier 10 according to an aspect of the present invention may be configured to include a composite filter assembly 100 and a main filter 200 described with reference to fig. 1 to 5. That is, the water purifier 10 according to an aspect of the present invention may include the composite filter assembly 100 and the main filter 200 as the filter part 20. In addition, the water purifier 10 according to an aspect of the present invention may further include a pressure applying part 30, and a composite filter mounting part F shown in fig. 5.

As described with reference to fig. 1 to 5, the composite filter assembly 100 may be configured to include a first filter portion 110 and a second filter portion 120.

In addition, as shown in fig. 7, when a flow path is formed using both the composite filter assembly 100 and the main filter 200, water to be treated may be provided to a user through a flow path sequentially passing through any one of the first and

second filter sections

110 and 120 of the composite filter assembly 100 and the other of the main filter 200, the first and

second filter sections

110 and 120.

At this time, according to the flow path connection structure of the first filter unit 110, the second filter unit 120, and the main filter 200, the purified water discharged through the first outlet port P2 after being filtered by the first filter unit 110 of the composite filter module 100 may flow into the second inlet port P3 of the second filter unit 120 through the main filter 200, or the purified water discharged through the second outlet port P4 after being filtered by the second filter unit 120 of the composite filter module 100 may flow into the first inlet port P1 of the first filter unit 110 through the main filter 200.

Thus, when the first filter unit 110 of the composite filter assembly 100 is provided in the flow path, it may be provided upstream of the main filter 200 and the second filter unit 120, or may be provided downstream of the main filter 200 and the second filter unit 120. For ease of illustration, however, in the water piping diagram of fig. 7, the first filter section 110 will be described as being located upstream of the second filter section 120.

Further, the order or shape of arrangement of the first inlet P1, the first outlet P2, the second inlet P3, and the second outlet P4 provided in the composite filter module 100 may be variously changed, but for convenience of description, as shown in the water piping diagram of fig. 7, a configuration in which the second outlet P4, the first inlet P1, the first outlet P2, and the second inlet P3 are provided on a straight line from left to right with respect to the composite filter module 100 shown in fig. 1 to 5 will be described as an example.

First, the first filter part 110 may be composed of a single filter element, but may also be configured as a pre-treatment filter (composite filter) including a sediment filter and a pre-activated carbon filter. In this case, the water flowing into the first filter section 110 through the first inflow port P1 may be filtered while passing through the sediment filter, and then further filtered through the pre-activated carbon filter, and then flow out through the first outflow port P2. As described above, in order for the first filter part 110 to effectively perform the function of a pre-treatment filter (composite filter), the first filter part 110 may have a large volume, and for this reason, as shown in fig. 2 to 4, it may be configured such that the first filter part 110 is accommodated in the first space part a1, the first space part a1 having a relatively larger volume than the second space part a2 and having a circular cross section.

The second filter unit 120 may be configured as a post-treatment filter including a post-activated carbon filter, and the water introduced into the second filter unit 120 through the second inlet port P3 may be filtered while passing through the post-activated carbon filter, and then may be discharged through the second outlet port P4. Such a second filter unit 120 may be provided with a combination of functional filters such as an activated carbon filter and an antibacterial filter.

In addition, the main filter 200 may be configured to filter particles finer than the first filter material 111 provided at the first filter part 110 and the second filter material 121 provided at the second filter part 120 of the composite filter assembly 100. That is, the main filter 200 may be a filter for filtering the finest particles, among the filters provided in the filter unit 20 of the water purifier 10.

As the main filter 200, various known filters such as a reverse osmosis membrane filter (RO membrane filter), a hollow fiber membrane filter, and a nano filter (nano trap) can be used. In the water purifier 10 shown in fig. 7, a reverse osmosis membrane filter is used as the main filter 200, but the present invention is not limited thereto. However, for convenience of explanation, hereinafter, a case of using a reverse osmosis membrane filter as the main filter 200 will be explained as an example, and the same reference numeral "200" as that of the main filter 200 is used for the reverse osmosis membrane filter.

Further, in order to apply pressure to the water supplied to the main filter 200, particularly, to the reverse osmosis membrane filter, the pressure applying part 30 may be provided in a flow path of the front end of the reverse osmosis membrane filter 200, and may be configured as a pump body as one example.

In addition, referring to fig. 5, the water purifier 10 according to an aspect of the present invention may include a composite filter mounting part F. The illustrated composite filter mounting portion F has a first inflow side connection port Q1, a first outflow side connection port Q2, a second inflow side connection port Q3, and a second outflow side connection port Q4, which correspond to the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4, respectively.

In the embodiment shown in fig. 1 to 5, the arrangement positions (heights) of the first and second inflow ports P1 and P2 and the arrangement positions (heights) of the second and second outflow ports P3 and P4 are different from each other, and in order to compensate for such a difference in height, extension pipes C1, C2 may be connected to the first inflow side connection port Q1 and the first outflow side connection port Q2 of the composite filter mount F so as to be connected to the first inflow port P1 and the first outflow port P2. On the other hand, as shown in the modification shown in fig. 6, when the ports of the first inflow port P1 and the first outflow port P2 are made to have the same height as the ports of the second inflow port P3 and the second outflow port P4 by the port extension pipes (the first port extension pipe PC1, the second port extension pipe PC2), the extension pipes C1, C2 shown in fig. 5 may not be installed. Thereby, the extension pipes C1, C2 having the protruding structure can be prevented from being damaged when the filter case 101 is assembled to the composite filter mounting part F.

With this connection structure, the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 of the composite filter assembly 100 are respectively plugged into the corresponding connection ports (the first inlet side connection port Q1, the first outlet side connection port Q2, the second inlet side connection port Q3, and the second outlet side connection port Q4), so that a plurality of flow paths are connected at one time.

On the other hand, in fig. 1 to 5, the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 have shapes protruding from the surface (the concave surface 106, the lower surface 109) of the filter housing 101, and in fig. 5, the connection ports (the first inlet side connection port Q1, the first outlet side connection port Q2, the second inlet side connection port Q3, and the second outlet side connection port Q4) corresponding thereto have shapes recessed, respectively. However, if both have a structure of being inserted and coupled to each other, the protruding shape and the recessed shape may be reversely provided, or may have a configuration in which the protruding shape and the recessed shape are combined with each other. For example, the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 may have a concave shape on the surface (the concave surface 106, the lower surface 109) of the filter housing 101, and the connection ports (the first inflow side connection port Q1, the first outflow side connection port Q2, the second inflow side connection port Q3, the second outflow side connection port Q4) corresponding thereto, respectively, may have a protruding shape, and they may have a structure of being plug-coupled to each other. As described above, when the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 have a concave shape, since the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 do not protrude from the surface (the concave surface 106, the lower surface 109) of the filter housing 101, damage or breakage of the first inlet port P1, the first outlet port P2, the second inlet port P3, and the second outlet port P4 during distribution or handling can be prevented. That is, in order to replace the composite filter assembly 100, it is necessary to distribute or deliver the composite filter assembly 100 to a user, and the first inflow port P1, the first outflow port P2, the second inflow port P3, and the second outflow port P4 can be prevented from being damaged or broken in such a process.

In addition, in order to perform filtering by means of the composite filter assembly 100 and the main filter 200 of the filtering part 20, as shown in fig. 7, a plurality of flow paths for mounting various components may be formed inside the water purifier 10.

For example, when the water feed valve FV opened and closed for water supply or water cut-off is opened, water to be treated (raw water) flows into the first inflow port P1 of the composite filter assembly 100 through the primary filter inflow flow path L1. Such a water feed valve FV may be provided in the flow path at the tip of the pressure applying portion 30, for example, in the primary filter outlet flow path L2. Further, a regulator RV may be provided in the primary filter inlet flow path L1 to regulate the raw water at a certain amount of pressure. The water flowing into the first inflow port P1 is filtered by the first filter part 110, and the primarily purified water primarily filtered in the first filter part 110 is discharged through the first outflow port P2.

The primary purified water discharged through the first outlet port P2 is supplied to the pressure applying part 30 through the primary filter outlet water flow path L2. At this time, the primary filter outlet flow path L2 may be provided with a first flow sensor FS1 that measures the flow rate of the primary purified water, a water feed valve FV, a first TDS sensor TDS1 that measures the TDS (total dissolved solids) of the primary purified water, and a first temperature sensor TS1 that measures the temperature of the primary purified water.

Further, since sufficient filtration may not be performed in the reverse osmosis membrane filter 200 only by the pressure of the raw water, the pressure applying part 30 may be driven to apply pressure to the water supplied to the reverse osmosis membrane filter 200.

The primary purified water pressurized by the pressurizing unit 30 flows into the reverse osmosis membrane filter 200 through the main filter inlet flow path L3. In this case, a pressure sensor PS for measuring the pressure of the water flowing into the reverse osmosis membrane filter 200 may be provided in the main filter inlet flow path L3.

The primary purified water flowing into the reverse osmosis membrane filter 200 is divided into secondary purified water passing through a membrane provided in the reverse osmosis membrane filter 200 and concentrated water (domestic water) not passing through the membrane. The concentrated water can be discharged to the drain port D through the drain flow path LD. In this case, the drain flow path LD may be provided with a resistance valve DV for limiting the amount or ratio of the concentrated water discharged through the drain flow path LD (the ratio of the water discharged as the purified water to the water discharged as the concentrated water in the water flowing into the reverse osmosis membrane filter). That is, since the flow path diameter of the resistance valve DV is small, a filtering pressure is formed in the reverse osmosis membrane filter 200, by which pressure a part of water can be filtered through the membrane of the reverse osmosis membrane filter 200, and the remaining water can be discharged as concentrated water.

On the other hand, the secondary purified water filtered through the membrane provided in the reverse osmosis membrane filter 200 passes through the secondary filter inlet water flow path (main filter outlet water flow path) L4, and flows into the second filter unit 120 through the second inlet port P3 to be filtered. At this time, a check valve CV for preventing water from flowing backward from the second filter unit 120 side to the reverse osmosis membrane filter 200, a second TDS sensor TDS2 for measuring TDS (total dissolved solids) of the secondary purified water filtered from the reverse osmosis membrane filter 200, and a second temperature sensor TS2 for measuring the temperature of the secondary purified water filtered from the reverse osmosis membrane filter 200 may be provided in the secondary filter inlet water flow path (main filter outlet water flow path) L4.

The secondary purified water filtered by the second filter unit 120 flows into the secondary filter outlet flow path L5 through the second outlet port P4, and then may be supplied to the user through the first water intake unit S1 formed of a faucet, a water valve, or the like. In addition, a second flow sensor FS2 that measures the flow rate of water taken out through the first water intake part S1, and a high pressure switch HPS that generates a signal when a pressure above a set pressure is applied may be provided in the secondary filter water outlet flow path L5. That is, when the water intake of the first water intake part S1 is finished and the pressure of the secondary filter water outlet flow path L5 is increased, the control part (not shown) closes the water feed valve FV or stops the operation of the pressure applying part 30 based on a signal generated from the high pressure switch HPS to block the water supplied to the reverse osmosis membrane filter 200.

On the other hand, the branch flow path L6 may be provided so that the primary purified water filtered only by the first filter unit 110 is supplied to the user through the second water intake unit S2 formed of a faucet or a water valve.

In order to supply the primary purified water supplied from the composite filter assembly 100 to the main filter 200 to the user without passing through the main filter 200, these branch flow paths L6 may be provided in a flow path at the front end of the main filter 200, for example, in the primary filter outlet flow path L2. By providing such a branch flow path L6, the purified water filtered from the composite filter module 100 can be used for various purposes.

As described above, the water purifier 10 according to an embodiment of the present invention can reduce the overall number of filters included in the water purifier 10 by combining a plurality of filter sections, achieve miniaturization of products, and can improve the efficiency of maintenance by reducing the number of filters to be replaced. In addition, the water purifier 10 according to an embodiment of the present invention can not only have a high degree of freedom in flow path structure by providing a plurality of inflow ports and a plurality of outflow ports, but also can compound filters spaced apart from each other in flow path arrangement, so that the compounded filters can be diversified and filters having similar filter replacement cycles can be compounded.

Although the embodiments of the present invention have been described in detail above, the scope of rights of the present invention is not limited thereto, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the scope of the technical spirit of the present invention recited in the claims.

Description of the reference numerals

10: water purifier 20: filter part

30: pressure-applying portion 100: composite filter assembly

101: the filter housing 102: shell body

103: the housing cover 104: joint part

105: concave portion 106: concave surface

109: inflow/outflow port setting surface 110: a first filter part

111: first filter material 113: first upper side cover

115: first lower side cover 116: discharge port

120: second filter portion 111: second filter material

125: second lower cover 130: flow path separation member

200: main filter (reverse osmosis membrane filter) a 1: a first space part

A2: second space portions C1, C2: extension pipe

CV: a check valve D: water outlet

DV: a resistance valve F: composite filter mounting

FV: feed valve FS 1: first flow sensor

FS 2: second flow sensor HPS: high-voltage switch

L1: primary filter inlet flow path L2: water outlet flow path of primary filter

L3: water inlet flow path of main filter

L4: secondary filter inlet flow path (main filter outlet flow path)

L5: secondary filter outlet flow path L6: branched flow path

LD: drainage flow path LL 1: first inflow path

LL 2: first outflow channel LL 3: second inflow path

LL 4: second outflow channel LLC: connecting flow path

P1: first inflow port P2: a first outflow port

P3: second inlet P4: a second outflow opening

PC 1: first port extension tube PC 2: second port extension tube

PS: pressure sensor Q1: first inflow side connection port

Q2: first outflow-side connection port Q3: second outflow side connection port

Q4: second outflow-side connection port S1: first water intake part

S2: second water cut TDS 1: first TDS sensor

TDS 2: second TDS sensor TS 1: first temperature sensor

TS 2: second temperature sensor

Claims

1. A composite filter assembly, wherein,

the method comprises the following steps:

a filter housing formed with a first inflow port, a first outflow port, a second inflow port, and a second outflow port,

a first filter part accommodated in the filter housing for filtering water flowing in through the first inflow port,

a second filter part accommodated in the filter housing and positioned in a vertical direction with respect to the first filter part, for filtering water flowing in through the second inflow port, an

A flow path separation member for dividing a water flow path passing through the first filter section and a water flow path passing through the second filter section;

the filter case is provided with a concave part which is formed to be concave from one end to the other end along the length direction of the filter case,

the first inflow port and the first outflow port are formed on the recess,

the purified water filtered at the first filter portion can be discharged through the first outflow port,

the purified water filtered at the second filter portion can be discharged through the second outflow port,

the first inflow port, the first outflow port, the second inflow port, and the second outflow port are formed in the filter housing to face the same direction as each other.

2. The composite filter assembly of claim 1,

the filter housing includes:

a first space portion having an inner space with a circular cross section;

and a second space portion having an inner space surrounding the recess and having a ring-shaped cross section.

3. The composite filter assembly of claim 2,

the first filter portion is accommodated in the first space portion,

the second filter portion is accommodated in the second space portion,

the flow path separation member is provided between the first filter unit and the second filter unit to be able to divide the first space portion and the second space portion.

4. The composite filter assembly of claim 1,

the recess is formed at a lower portion of the filter housing,

the first filter part is accommodated in an upper portion of the filter housing,

the second filter portion is accommodated in a lower portion of the filter housing.

5. The composite filter assembly of claim 4,

a connection flow path is formed between the first filter unit and the second filter unit, the connection flow path being capable of allowing water to flow into the first filter unit or allowing water to flow out of the first filter unit,

the flow path separation member may separate an upper end of the second filter unit from the connection flow path.

6. The composite filter assembly of claim 5,

the flow path separating member is configured as an upper cover for supporting an upper end of the second filter unit.

7. The composite filter assembly of any of claims 1-6,

the first inflow port, the first outflow port, the second inflow port, and the second outflow port are formed in the filter housing toward a lower side of the filter housing.

8. The composite filter assembly of any of claims 1-6,

the second inflow port and the second outflow port are formed in a lower surface of the filter housing.

9. The composite filter assembly of any of claims 1-6,

the first inflow port, the first outflow port, the second inflow port, and the second outflow port are formed on the recess.

10. The composite filter assembly of any of claims 1-6,

each end of the first inflow port, the first outflow port, the second inflow port, and the second outflow port has the same height.

11. The composite filter assembly of any of claims 1-6,

the first inflow port, the first outflow port, the second inflow port, and the second outflow port have a shape protruding from a surface of the filter housing.

12. The composite filter assembly of any of claims 1-6,

the first inflow port, the first outflow port, the second inflow port, and the second outflow port have a shape recessed from a surface of the filter housing.

13. The composite filter assembly of any of claims 1-6,

at least one of the first filter unit and the second filter unit is configured as a composite filter provided with a plurality of filter elements connected in series in a flow path.

14. The composite filter assembly of any of claims 1-6,

one of the first filter unit and the second filter unit is configured as a pretreatment filter, and the other is configured as a post-treatment filter.

15. The composite filter assembly of any of claims 1-6,

a first inflow passage is formed radially outside the first filter unit, and a first outflow passage is formed in a central portion of the first filter unit,

a second inflow passage is formed radially outward of the second filter portion, and a second outflow passage is formed at a center portion of the second filter portion.

16. The composite filter assembly of any of claims 1-6,

the filter housing is integrally formed by a housing main body and a housing cover combined with the housing main body,

the second filter unit, the flow path separation member, and the first filter unit are stacked in this order from bottom to top in an internal space of the filter housing integrally formed.

17. A water purifier, wherein,

the method comprises the following steps:

the composite filter assembly of any of claims 1-6, and

a primary filter capable of filtering finer particles than the filter material in the composite filter assembly;

the water to be treated can be provided to a user through a flow path passing through any one of the first and second filter parts of the composite filter assembly, the main filter, and the remaining one of the first and second filter parts.

18. The water purifier according to claim 17,

further comprising a composite filter mount including connection ports corresponding to the first inlet, the first outlet, the second inlet, and the second outlet, respectively,

the first inflow port, the first outflow port, the second inflow port and the second outflow port of the composite filter assembly are in plug-in connection with the connection ports, so that a plurality of flow paths can be connected at one time.

19. The water purifier according to claim 18,

the connection port has a concave or convex shape corresponding to the first inflow port, the first outflow port, the second inflow port, and the second outflow port, respectively, so as to be capable of being inserted into and combined with the first inflow port, the first outflow port, the second inflow port, and the second outflow port.

20. The water purifier according to claim 17,

the first filter unit is a pretreatment filter and is provided in a flow path at the front end of the main filter,

the second filter unit is configured as a post-treatment filter and is provided in a flow path at the rear end of the main filter.

21. The water purifier according to claim 17,

the water purifier is composed of:

the purified water discharged through the first inflow and outflow port of the composite filter assembly flows into the second inflow and outflow port through the main filter; or

The purified water discharged through the second outlet of the composite filter assembly flows into the first inlet through the main filter.

22. The water purifier of claim 21,

a branch flow path is provided in a flow path at a front end of the main filter, and the branch flow path enables purified water supplied from the composite filter assembly to the main filter to be supplied to a user without passing through the main filter.

23. The water purifier according to claim 17,

the water purifier further includes a pressure applying part provided on a flow path of a front end of the main filter to be capable of applying pressure to the water supplied to the main filter,

the main filter comprises a reverse osmosis membrane filter.