Water purifier having composite filter

Abstract

The present invention relates to a water purifier equipped with a composite filter, wherein raw water intake, first purified water output, second purified water intake, third purified water output, as well as domestic water discharge are possible, thereby enabling the implementation of additional functions using an external filter during the process in which raw water passes through the composite filter; user convenience can be enhanced by integrating a spiral-wound internal filter member to form the composite filter; first to fourth partition walls are provided in the head member of the housing part to form an independent flow path in which raw water, purified water, and domestic water are not mixed, so that the tubes through which raw water, purified water, and domestic water flow are concentrated at the top of the composite filter, thereby enhancing the freedom of layout design for other parts; a first upper cap member and a second upper cap member are stacked in the filtration part, and a first through hole is formed in the first upper cap member so that the discharged domestic water flows through a domestic water flow path formed between the first upper cap member and the second upper cap member, thereby reducing the axial height of the composite filter to enable miniaturization and improving manufacturability through configuration simplification. It is.

Description

Technology Field

[0001] The present invention relates to a water purifier equipped with a composite filter. Since it is capable of receiving raw water, first purified water, second purified water, and third purified water, as well as discharging domestic water, it is possible to implement additional functions using an external filter during the process in which raw water passes through the composite filter. Furthermore, user convenience can be enhanced by integrating a spiral-wound internal filter member, such as a reverse osmosis filter or a hollow fiber membrane filter, into the composite filter. Additionally, first to fourth partition walls are provided in the head member of the housing part to form independent flow paths where raw water, purified water, and domestic water do not mix, thereby concentrating the tubes through which raw water, purified water, and domestic water flow at the top of the composite filter and enhancing the freedom of layout design for other parts. In the filtration part, a first upper cap member and a second upper cap member are stacked, and a first through hole is formed in the first upper cap member so that the discharged domestic water flows through a domestic water flow path formed between the first upper cap member and the second upper cap member. This reduces the axial height of the composite filter, enabling miniaturization, and simplifies the configuration, thereby improving manufacturability. This relates to a water purifier equipped with a composite filter capable of improvement. Background Technology

[0002] Generally, a water purifier is a device that filters incoming raw water into potable water and provides it to the user. These water purifiers use a combination of multiple filters for raw water filtration. However, using such a combination of filters leads to a complex internal layout and an increase in the volume occupied by the filters, which in turn increases the overall volume of the water purifier. Therefore, to solve this problem, composite filters in which each filter is integrated are sometimes used.

[0003] A water purifier disclosed in Korean Patent Publication No. 2021-0040502 of Coway Co., Ltd. is equipped with a composite filter for filtering raw water. The composite filter is equipped with a first filter material and a second filter material, and each of these filter materials can be selected from known filter materials, such as a single filter element, for example, a sediment filter, a pre-carbon filter, a post-carbon filter, an antibacterial filter, and various functional filters. However, since this composite filter is equipped only with a flow path for raw water, primary purified water, and secondary purified water, and is not equipped with an external filter to additionally filter the discharged primary purified water from the outside, the implementation of additional functions using such an external filter is limited. Furthermore, since it is not equipped with a flow path for concentrated domestic water discharged through a reverse osmosis filter, there is a problem that the reverse osmosis filter cannot be integrated and used as a composite filter.

[0004] Korean Published Patent Application No. 2019-0060390 of Alcamedi Co., Ltd. discloses a conventional composite filter. In this composite filter, a carbon filter, a nanofilter, and a calcium filter are integrally mounted on an upper cap, and the incoming raw water is configured to be filtered as it sequentially passes through these filters. However, since this composite filter is configured to enable only sequential water treatment between the internal filters, there is a problem in that the implementation of additional functions using external filters is limited during the process of raw water passing through the composite filter. Prior art literature

[0005] Korean Published Patent Application No. 2021-0040502 Korean Published Patent Application No. 2019-0060390 The problem to be solved

[0006] To solve the above problems, a water purifier equipped with a composite filter according to the present invention is capable of receiving raw water, discharging first purified water, receiving second purified water, discharging third purified water, as well as discharging domestic water. This enables the implementation of additional functions using an external filter during the process in which raw water passes through the composite filter. Additionally, user convenience can be enhanced by integrating a spiral-wound internal filter member, such as a reverse osmosis filter or a hollow fiber membrane filter, into the composite filter. Furthermore, first to fourth partition walls are provided in the head member of the housing portion to form an independent flow path in which raw water, purified water, and domestic water are not mixed, thereby concentrating the tubes through which raw water, purified water, and domestic water flow at the top of the composite filter and enhancing the freedom of layout design for other parts. In the filtration portion, a first upper cap member and a second upper cap member are stacked, and a first through hole is formed in the first upper cap member so that the discharged domestic water flows through a domestic water flow path formed between the first upper cap member and the second upper cap member. Consequently, the axial height of the composite filter is reduced, enabling miniaturization. The purpose is to enhance manufacturability through simplification.

[0007] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that a first purified water being discharged flows inside a first upward guide formed in a first upper cap member, and a discharged domestic water flows inside a second upward guide formed in a second upper cap member, wherein the first upper cap member and the second upper cap member are spaced apart from each other by a certain distance so that a domestic water flow path is formed, thereby enabling the formation of an independent flow path in which the first purified water and domestic water are not mixed, and aims to improve manufacturability through simplification of the configuration.

[0008] A water purifier equipped with a composite filter according to one embodiment of the present invention aims to improve the durability of the water purifier by stably fixing a spiral-wound internal filter member through a first downward guide formed extending downward from the lower surface of a first upper cap member, and to enhance the operational stability of the water purifier by configuring the water purifier so that domestic water generated through the spiral-wound internal filter member is discharged through a first through hole.

[0009] A water purifier equipped with a composite filter according to one embodiment of the present invention aims to improve manufacturability through simplification of configuration by configuring a third upper cap member and a fourth upper cap member in a stacked arrangement, wherein a post-processing internal filter member is fixedly positioned at the bottom of the third upper cap member, and a second purified water introduced from the outside flows through a second purified water flow path formed between the third upper cap member and the fourth upper cap member.

[0010] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that the third purified water being discharged flows into the inner side of a third upward guide formed in a third upper cap member, and the second purified water being received flows into the inner side of a fourth upward guide formed in a fourth upper cap member. Since the third upper cap member and the fourth upper cap member are spaced apart from each other by a certain distance to form a second purified water flow path, it is possible to form an independent flow path in which the second purified water and the third purified water are not mixed, and the invention aims to improve manufacturability through simplification of the configuration.

[0011] A water purifier equipped with a composite filter according to one embodiment of the present invention aims to improve the durability of the water purifier by configuring the post-processing internal filter member to be stably fixed through a third downward guide formed extending downward from the lower surface of a third upper cap member.

[0012] A water purifier equipped with a composite filter according to one embodiment of the present invention aims to improve the durability of the water purifier by configuring the fourth downward guide, which is formed to extend downward from the lower surface of the fourth upper cap member and extends downward to surround the outer surface of the third upper cap member, and extends to the outer surface of the second upper cap member so that the post-processing internal filter member is stably fixed.

[0013] The water purifier equipped with a composite filter according to one embodiment of the present invention aims to improve workability by configuring it so that the post-processing internal filter member is stably fixed through a lower guide formed extending upward from the upper surface of a lower cap member, thereby improving the durability of the water purifier, and also by enabling the modularization of the composite filter through a sub-assembly process by fixing the post-processing internal filter member through the third and fourth upper cap members and the lower cap member.

[0014] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that a raw water flow path is formed between a body member and a spiral-wound internal filter member, and the spiral-wound internal filter member is spaced apart from the lower surface of the body member so that the raw water flow path extends to the lower part of the spiral-wound internal filter member, thereby allowing the raw water to pass through the spiral-wound internal filter member after moving to the lower part of the spiral-wound internal filter member, thereby aiming to improve the operational stability of the water purifier while stably generating a first purified water and domestic water in a separated state.

[0015] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that a central tube is provided on the inner circumference of a spiral-wound internal filter member, thereby allowing the spiral-wound internal filter member to be wound in a spiral shape and simultaneously stably maintaining a first water purification path formed inside the spiral-wound internal filter member, with the purpose of enhancing operational reliability through the smooth flow of the first water purification.

[0016] A water purifier equipped with a composite filter according to one embodiment of the present invention is designed to secure a raw water flow path so that raw water entering the upper part of the housing can move to the filtration part by forming a first support projection protruding radially outwardly around the outer circumference of the fourth upper cap member to support the inner surface of the body member, and the first support projection is arranged at equal intervals so that raw water can move evenly in the circumferential direction of the fourth upper cap member, thereby enhancing product reliability through improved raw water flow.

[0017] A water purifier equipped with a composite filter according to one embodiment of the present invention controls the flow of raw water, purified water, and domestic water by controlling the valve unit through the control unit, and aims to enhance product reliability by effectively preventing the backflow of these fluids. means of solving the problem

[0018] To achieve the above objective, a water purifier equipped with a composite filter according to the present invention comprises: a housing part equipped with a raw water inlet port for receiving raw water, a first purified water outlet port for discharging filtered first purified water, a second purified water inlet port for receiving second purified water filtered from the outside, a third purified water outlet port for discharging filtered third purified water, and a domestic water outlet port for discharging domestic water generated during the filtration process; and a filtration part equipped with a spiral-shaped internal filter member disposed inside the housing part to filter the raw water to produce the first purified water, an external filter member disposed outside the housing part to filter the first purified water to produce the second purified water, and a post-processing internal filter member disposed inside the housing part to filter the second purified water to produce the third purified water, wherein the housing part comprises a first partition wall that prevents the raw water and the second purified water from mixing, a second partition wall that prevents the second purified water and the third purified water from mixing, a third partition wall that prevents the third purified water and the domestic water from mixing, and The device comprises a head member having a fourth partition wall that prevents the mixing of the above-mentioned domestic water and the above-mentioned first purified water, and a body member extending from the head member and having the above-mentioned filter unit disposed therein, wherein the filter unit comprises a first upper cap member in which the above-mentioned spiral internal filter member is fixedly disposed at the bottom, and a second upper cap member disposed at a certain distance from the upper surface of the first upper cap member so as to provide a domestic water flow path through which the domestic water discharged from the above-mentioned spiral internal filter member flows, wherein the first upper cap member includes a first through hole that connects the interior of the above-mentioned spiral internal filter member with the domestic water flow path so that the domestic water discharged from the above-mentioned spiral internal filter member disposed at the bottom flows into the domestic water flow path.

[0019] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the first upper cap member includes a first upward guide that extends upward to allow the first purified water to flow, and the second upper cap member includes a second upward guide that extends upward to allow the domestic water to flow, and the first upward guide and the second upward guide are spaced apart from each other by a certain distance so that the domestic water flow path is extended and formed.

[0020] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the first upper cap member is characterized by including a first downward guide that extends downward so as to fix the spiral-shaped internal filter member.

[0021] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the filtration unit comprises a third upper cap member that is stacked and fixed so that the post-treatment internal filter member is positioned on the upper surface of the second upper cap member, and a fourth upper cap member that is spaced apart from the upper surface of the third upper cap member by a certain distance so as to provide a second water purification channel through which the second water purification received from the outside flows.

[0022] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the third upper cap member includes a third upward guide that extends upward to allow the third purified water to flow, and the fourth upper cap member includes a fourth upward guide that extends upward to allow the second purified water to flow, and the third upward guide and the fourth upward guide are spaced apart from each other by a certain distance so that the second purified water flow path is extended and formed.

[0023] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the third upper cap member is characterized by including a third downward guide that extends downward so that the post-processing internal filter member is fixedly positioned.

[0024] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the fourth upper cap member includes a fourth downward guide that extends downward to surround the outer surface of the third upper cap member, wherein the fourth downward guide is characterized by being extended to the outer surface of the second upper cap member.

[0025] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the filtration unit further comprises a lower cap member having a lower guide that extends upward so that the post-processing internal filter member is fixedly positioned at the top.

[0026] In a water purifier equipped with a composite filter according to one embodiment of the present invention, a raw water flow path is provided between the inner surface of the body member and the outer surface of the spiral-shaped internal filter member, wherein the raw water flow path is spaced apart from the lower surface of the body member so as to extend radially inward to the lower portion of the spiral-shaped internal filter member.

[0027] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the inner surface of the spiral-wound internal filter member is supported so that the spiral-wound internal filter member is wound in a spiral shape, and a central tube having a second through hole formed therein is provided so that the first purified water flows into a first purified water flow path formed inside the spiral-wound internal filter member.

[0028] In a water purifier equipped with a composite filter according to one embodiment of the present invention, the fourth upper cap member comprises at least two first support protrusions formed to protrude radially outwardly around the outer circumference, and the first support protrusions are spaced apart from each other at equal intervals.

[0029] A water purifier equipped with a composite filter according to one embodiment of the present invention is characterized by further including a valve unit for controlling the flow of the raw water, the purified water, and the domestic water, and a control unit for controlling the operation of the valve unit. Effects of the invention

[0030] According to the above configuration, the water purifier equipped with the composite filter according to the present invention is capable of receiving raw water, discharging first purified water, receiving second purified water, discharging third purified water, as well as discharging domestic water. This enables the implementation of additional functions using an external filter during the process in which raw water passes through the composite filter. Additionally, user convenience can be enhanced by integrating a spiral-wound internal filter member, such as a reverse osmosis filter or a hollow fiber membrane filter, into the composite filter. Furthermore, first to fourth partition walls are provided in the head member of the housing portion to form an independent flow path in which raw water, purified water, and domestic water are not mixed, thereby concentrating the tubes through which raw water, purified water, and domestic water flow at the top of the composite filter and enhancing the freedom of layout design for other parts. In the filtration portion, a first upper cap member and a second upper cap member are stacked, and a first through hole is formed in the first upper cap member so that the discharged domestic water flows through a domestic water flow path formed between the first upper cap member and the second upper cap member. Consequently, the axial height of the composite filter is reduced, enabling miniaturization. It provides the effect of enhancing manufacturability through simplification.

[0031] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that a first purified water being discharged flows inside a first upward guide formed in a first upper cap member, and a discharged domestic water flows inside a second upward guide formed in a second upper cap member. Since the first upper cap member and the second upper cap member are spaced apart from each other by a certain distance to form a domestic water flow path, it is possible to form an independent flow path in which the first purified water and the domestic water are not mixed, and it provides the effect of improving manufacturability through simplification of the configuration.

[0032] A water purifier equipped with a composite filter according to one embodiment of the present invention improves the durability of the water purifier by stably fixing a spiral-wound internal filter member through a first downward guide formed extending downward from the lower surface of a first upper cap member, and provides the effect of enhancing the operational stability of the water purifier by configuring the water purifier so that domestic water generated through the spiral-wound internal filter member is discharged through a first through hole.

[0033] A water purifier equipped with a composite filter according to one embodiment of the present invention provides the effect of improving manufacturability through simplification of configuration by configuring a third upper cap member and a fourth upper cap member in a stacked arrangement, wherein a post-processing internal filter member is fixedly positioned at the bottom of the third upper cap member, and a second purified water introduced from the outside flows through a second purified water flow path formed between the third upper cap member and the fourth upper cap member.

[0034] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that the third purified water being discharged flows into the inner side of a third upward guide formed in a third upper cap member, and the second purified water being received flows into the inner side of a fourth upward guide formed in a fourth upper cap member. Since the third upper cap member and the fourth upper cap member are spaced apart from each other by a certain distance to form a second purified water flow path, it is possible to form an independent flow path in which the second purified water and the third purified water are not mixed, and the effect of improving manufacturability through simplification of the configuration is provided.

[0035] A water purifier equipped with a composite filter according to one embodiment of the present invention provides the effect of enhancing the durability of the water purifier by configuring the post-processing internal filter member to be stably fixed through a third downward guide formed extending downward from the lower surface of a third upper cap member.

[0036] A water purifier equipped with a composite filter according to one embodiment of the present invention provides the effect of enhancing the durability of the water purifier by configuring the fourth downward guide, which is formed to extend downward from the lower surface of the fourth upper cap member and extends downward to surround the outer surface of the third upper cap member, and extends to the outer surface of the second upper cap member so that the post-processing internal filter member is stably fixed.

[0037] A water purifier equipped with a composite filter according to one embodiment of the present invention provides the effect of improving workability by enabling modularization of the composite filter through a sub-assembly process, in addition to improving the durability of the water purifier by stably fixing the post-processing internal filter member through a lower guide formed extending upward from the upper surface of the lower cap member, and by fixing the post-processing internal filter member through the third and fourth upper cap members and the lower cap member.

[0038] A water purifier equipped with a composite filter according to one embodiment of the present invention provides the effect of enhancing the operational stability of the water purifier by stably generating a first purified water and domestic water in a separated state, by configuring the raw water flow path to be formed between a body member and a spiral-wound internal filter member, wherein the spiral-wound internal filter member is spaced apart from the lower surface of the body member so that the raw water flow path extends to the lower part of the spiral-wound internal filter member, thereby allowing the raw water to pass through the spiral-wound internal filter member after moving to the lower part of the spiral-wound internal filter member.

[0039] A water purifier equipped with a composite filter according to one embodiment of the present invention is configured such that a central tube is provided on the inner circumference of a spiral-wound internal filter member, thereby allowing the spiral-wound internal filter member to be wound in a spiral shape and simultaneously stably maintaining a first water purification path formed inside the spiral-wound internal filter member, which provides the effect of enhancing operational reliability through the smooth flow of the first water purification.

[0040] A water purifier equipped with a composite filter according to one embodiment of the present invention has a first support projection formed to protrude radially outwardly around the outer circumference of a fourth upper cap member to support the inner surface of a body member, thereby securing a raw water flow path so that raw water entering the upper part of the housing can move to the filtration part, and the first support projection is arranged at equal intervals so that raw water can move evenly in the circumferential direction of the fourth upper cap member, thereby providing the effect of enhancing product reliability through improved raw water flow.

[0041] A water purifier equipped with a composite filter according to one embodiment of the present invention can control the flow of raw water, purified water, and domestic water by controlling a valve unit through a control unit, and provides the effect of enhancing product reliability by effectively preventing these fluids from flowing backward. Brief explanation of the drawing

[0042] FIG. 1 is a configuration diagram showing the overall water piping of a water purifier equipped with a composite filter according to one embodiment of the present invention. FIG. 2 is a configuration diagram showing the overall water piping of a water purifier equipped with a composite filter according to another embodiment of the present invention. FIG. 3 is a configuration diagram illustrating a water purifier equipped with a composite filter according to one embodiment of the present invention. FIG. 4 is a plan view illustrating a head member of a water purifier equipped with a composite filter according to one embodiment of the present invention. FIG. 5 is a cross-sectional view illustrating a filtration section of a water purifier equipped with a composite filter according to an embodiment of the present invention. FIG. 6 is an enlarged cross-sectional view of section A of FIG. 5. FIG. 7 is an enlarged cross-sectional view of section B of FIG. 5. FIG. 8 is a cross-sectional view showing the disassembled state of the first to fourth upper cap members and lower cap members of a water purifier equipped with a composite filter according to one embodiment of the invention. FIG. 9 is a cross-sectional view of section I-I of FIG. 8. FIG. 10 is a cross-sectional view of section II-II of FIG. 8. FIG. 11 is a cross-sectional view illustrating a state in which a filtration unit of a water purifier equipped with a composite filter according to one embodiment of the present invention is installed in a housing. Specific details for implementing the invention

[0043] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.

[0044] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical concepts of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.

[0045] In this specification, terms such as “comprising” or “having” are intended to describe the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0046] The statement that a component is "in front," "rear," "upper," or "lower" of another component includes, unless there are special circumstances, not only being positioned "in front," "rear," "upper," or "lower" in direct contact with the other component, but also cases where another component is positioned in between. Furthermore, the statement that a component is "connected" to another component includes, unless there are special circumstances, not only being directly connected to each other, but also being indirectly connected to each other.

[0047] Hereinafter, a water purifier equipped with a composite filter according to the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing the overall water piping of a water purifier equipped with a composite filter according to one embodiment of the present invention, FIG. 2 is a configuration diagram showing the overall water piping of a water purifier equipped with a composite filter according to another embodiment of the present invention, FIG. 3 is a configuration diagram showing a water purifier equipped with a composite filter according to one embodiment of the present invention, FIG. 4 is a plan view showing a head member of a water purifier equipped with a composite filter according to one embodiment of the present invention, FIG. 5 is a cross-sectional view showing a filtration part of a water purifier equipped with a composite filter according to one embodiment of the present invention, FIG. 6 is a cross-sectional view showing an enlarged view of part A of FIG. 5, and FIG. 7 is a cross-sectional view showing an enlarged view of part B of FIG. 5.

[0048] As illustrated in FIG. 1, a water purifier equipped with a composite filter according to one embodiment of the present invention allows incoming raw water (W1) to move while passing through a pressure reducing valve (11) with reduced pressure. At this time, the incoming raw water (W1) may be configured to be filtered by passing through a separate pretreatment filter (90), such as a sediment filter or a carbon filter. The incoming raw water (W1) moves to a spiral wound internal filter member (60). At this time, the spiral wound internal filter member (60) may be a spiral wound type reverse osmosis filter. The first purified water (C1) filtered while passing through the spiral wound internal filter member (60) may be reverse osmosis treated water, and after being discharged to the outside, this first purified water (C1) moves to an external filter (70). The external filter (70) may be a mineral filter. That is, the first purified water (C1), such as reverse osmosis treated water, is in a state where all ions have been removed, but by passing it through a functional filter such as a mineral filter, the second purified water (C2) can contain sufficient minerals. In other words, even if ions are removed by the reverse osmosis filter during the process of the raw water (W1) passing through the composite filter, it is possible to implement an additional function of adding minerals by using an external filter (70) such as a mineral filter. The second purified water (C2) moves to a post-treatment internal filter member (80). The post-treatment internal filter member (80) may be a carbon filter. At this time, the external filter (70) may be replaced with a separate water purification tank. That is, the first purified water (C1) discharged externally is stored in the water purification tank, and in the process of providing drinking water to the user, the first purified water (C1) stored in the water purification tank is discharged after passing through a post-treatment internal filter member (80) such as a carbon filter, thereby enabling improved user satisfaction through improved water quality. At this time, it is also possible to place both the aforementioned external filter (70) and the water purification tank. Additionally, the domestic water (W2) generated during the process in which the raw water (W1) passes through the spiral-wound internal filter member (60) is discharged to the outside.The valve section (300) described later may be equipped with a first valve (310) for controlling the flow of raw water (W1), a second valve (320) for controlling the flow of first purified water (C1), a third valve (330) for controlling the flow of second purified water (C2), a fourth valve (340) for controlling the flow of third purified water (C3), and a fifth valve (350) for controlling the flow of domestic water (W2).

[0049] Alternatively, as illustrated in FIG. 2, in a water purifier equipped with a composite filter according to another embodiment of the present invention, the incoming raw water (W1) moves with reduced pressure as it passes through a pressure reducing valve (11), and the raw water (W1) thus moved moves to a spiral wound type internal filter member (60). At this time, the spiral wound type internal filter member (60) may be a spiral wound type hollow fiber membrane filter capable of functioning as a pretreatment filter. The first purified water (C1) filtered while passing through the spiral wound type internal filter member (60) may be UF treated water, and after being discharged to the outside, this first purified water (C1) moves to an external filter (70). The external filter (70) may be a reverse osmosis filter capable of functioning as a main filter. That is, by allowing the first purified water (C1), such as UF treated water, to pass through a main filter such as a reverse osmosis filter, the user can safely drink the second purified water (C2). That is, by having the raw water (W1) pass through a composite filter, pre-treated by a hollow fiber membrane filter, and then pass through an external filter (70), such as a reverse osmosis filter, it becomes possible to implement an additional function that allows the user to safely drink the water. The second purified water (C2) moves to a post-treatment internal filter member (80). The post-treatment internal filter member (80) may be a carbon filter. By configuring the second purified water (C2) to be discharged after passing through a post-treatment internal filter member (80), such as a carbon filter, it becomes possible to improve user satisfaction through improved water quality. In addition, the domestic water (W2) generated during the process of the raw water (W1) passing through a spiral-wound internal filter member (60) may be UF domestic water, and this UF domestic water can be used as sterilizing water to sterilize an external filter (70), such as a reverse osmosis filter, and the water pipes connected thereto after passing through a separate sterilization module (51) placed externally. This sterilization module (51) may be a UV sterilization filter or a separate sterilization means. In this case, it is also possible to configure it so that UF domestic water is simply discharged to the outside.The valve section (300) described later may be equipped with a first valve (310) for controlling the flow of raw water (W1), a second valve (320) for controlling the flow of first purified water (C1), a third valve (330) for controlling the flow of second purified water (C2), a fourth valve (340) for controlling the flow of third purified water (C3), and a fifth valve (350) for controlling the flow of domestic water (W2).

[0050] As illustrated in FIGS. 3 to 7, a water purifier equipped with a composite filter according to an embodiment of the present invention comprises a housing part (100) having a raw water inlet port (10) into which raw water (W1) is received, a first purified water outlet port (20) into which filtered first purified water (C1) is discharged, a second purified water inlet port (30) into which filtered second purified water (C2) is received from the outside, a third purified water outlet port (40) into which filtered third purified water (C3) is discharged, and a domestic water discharge port (50) into which domestic water generated during the filtration process is discharged; a spiral-wound internal filter member (60) disposed inside the housing part (100) to filter raw water (W1) to produce first purified water (C1), an external filter member (70) disposed outside the housing part (100) to filter the first purified water (C1) to produce second purified water (C2), and to filter the second purified water (C2) to produce third purified water (C3). It may include a filtration unit (200) equipped with a post-processing internal filter member (80) disposed inside the housing unit (100).

[0051] In this way, raw water (W1) received through the raw water inlet port (10) is filtered by sequentially passing through the spiral-wound internal filter member (60), the external filter member (70), and the post-treatment internal filter member (80) provided in the filtration unit (200), and the finally filtered third purified water (C3) can be discharged through the third purified water outlet port (40) and provided to the user. Alternatively, it may be stored in a separate purified water storage unit or supplied to a cold water generating unit, a hot water generating unit, and an ice generating unit for generating cold water, hot water, and ice. In addition, domestic water (W2) generated from the spiral-wound internal filter member (60) can be discharged to the outside of the housing unit (100) through the domestic water discharge port (50) and then discharged to the outside of the water purifier through a separate tube. In this way, by configuring it to allow for the intake of raw water (W1), the output of the first purified water (C1), the intake of the second purified water (C2), and the output of the third purified water (C3), as well as the discharge of domestic water (W2), it is possible to implement additional functions using an external filter member (70) during the process in which the raw water (W1) passes through the composite filter, and it is possible to form a composite filter by integrating a spiral-wound internal filter member (60), such as a reverse osmosis filter or a hollow fiber membrane filter. Additionally, the external filter member (70) may include an electro-deionization filter. Electro-deionization methods refer to EDI (Electro Deionization), CEDI (Continuous Electro Deionization), CDI (Capacitive Deionization), etc.

[0052] The aforementioned housing part (100) may include a head member (110) equipped with a first partition wall (111) that prevents raw water (W1) and second purified water (C2) from mixing, a second partition wall (112) that prevents the second purified water (C2) and third purified water (C3) from mixing, a third partition wall (113) that prevents the third purified water (C3) and domestic water (W2) from mixing, and a fourth partition wall (114) that prevents the domestic water (W2) and first purified water (C1) from mixing, and a body member (120) extending from the head member (110) and having a filtration part (200) disposed inside. The aforementioned first to fourth partition walls (111, 112, 113, 114) are formed sequentially along the radial direction (r) inside. The filtration unit (200) may include a first upper cap member (210) in which a spiral-shaped internal filter member (60) is fixedly disposed at the bottom, and a second upper cap member (220) disposed at a certain distance from the upper surface of the first upper cap member (210) so as to provide a domestic water flow path (PW2) through which domestic water (W2) discharged from the spiral-shaped internal filter member (60) flows. That is, the structure is such that not only the incoming raw water (W1) but also the outgoing first purified water (C1), incoming second purified water (C2), outgoing third purified water (C3), and outgoing domestic water (W2) are incoming to the upper part of the composite filter and are outgoing / outgoing to the upper part. To this end, the head member (110) may have a raw water area (RW1), a first purified water area (RC1), a second purified water area (RC2), a third purified water area (RC3), and a domestic water area (RW2) formed therein, through which the incoming raw water (W1), outgoing first purified water (C1), incoming second purified water (C2), outgoing third purified water (C3), and outgoing domestic water (W2) flow, respectively.The first upper cap member (210) and the second upper cap member (220) are stacked on top of each other, and the second upper cap member (220) is spaced apart from the first upper cap member (210) at a certain distance so that a water flow path (PW2) through which water (W2) discharged from the spiral-wound internal filter member (60) flows is formed between them. To this end, a spacer (220a) extending downwardly may be provided on the lower surface of the second upper cap member (220). In this way, the first to fourth partition walls (111, 112, 113, 114) described above are sequentially formed along the radial direction (r) inside of the head member (110) so that an independent flow path is formed in which the raw water (W1), the first purified water (C1), the second purified water (C2), the third purified water (C3), and the domestic water (W2) flow, and the tubes through which the raw water (W1), the first purified water (C1), the second purified water (C2), the third purified water (C3), and the domestic water (W2) flow are concentrated at the top of the composite filter, thereby improving the freedom of layout design for other parts. In addition, the first upper cap member (210) and the second upper cap member (220) are stacked, and the first upper cap member (210) is provided with a first through hole (210a) that connects the interior of the spiral-shaped internal filter member (50) with the domestic water flow path (PW2) so that domestic water (W2) discharged from the spiral-shaped internal filter member (60) placed at the bottom flows into the domestic water flow path (PW2), thereby reducing the axial height of the composite filter, making it possible to miniaturize it, and simplifying the configuration to improve manufacturability.

[0053] FIG. 8 is a cross-sectional view showing the first to fourth upper cap members and lower cap members of a water purifier equipped with a composite filter according to one embodiment of the invention in a disassembled state, FIG. 9 is a cross-sectional view of the section I-I of FIG. 8, and FIG. 10 is a cross-sectional view of the section II-II of FIG. 8.

[0054] As illustrated in FIGS. 5 and 6, in a water purifier equipped with a composite filter according to one embodiment of the present invention, the first upper cap member (210) includes a first upward guide (211) that extends upward to allow the first purified water (C1) to flow, and the second upper cap member (220) includes a second upward guide (221) that extends upward to allow the domestic water (W2) to flow, and the first upward guide (211) and the second upward guide (221) may be spaced apart from each other by a certain distance so that a domestic water flow path (PW2) is extended and formed. That is, the first purified water (C1) being discharged flows inside the first upward guide (211) formed in the first upper cap member (210), and the discharged domestic water (W2) flows inside the second upward guide (221) formed in the second upper cap member (220). Since the first upper cap member (210) and the second upper cap member (220) are spaced apart from each other by a certain distance to form a domestic water flow path (PW2), it is possible to form an independent flow path so that the first purified water (C1) and the domestic water (W2) are not mixed, and it is possible to improve manufacturability through simplification of the configuration. At this time, as shown in FIGS. 8 and 9, the spacer (220a) extending downward from the lower surface of the second upper cap member (220) can be formed integrally along the circumferential direction so that the discharged domestic water (W2) does not flow backward and mix with the raw water (W1).

[0055] In addition, as illustrated in FIGS. 5 and 6, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the first upper cap member (210) may include a first downward guide (212) that extends downward so that a spiral-shaped internal filter member (60) is fixedly positioned. That is, the spiral-shaped internal filter member (60) is stably fixed through the first downward guide (212) formed extending downward from the lower surface of the first upper cap member (210), thereby improving the durability of the water purifier, and the operational stability of the water purifier is improved by configuring the water for daily use (W2) generated through the spiral-shaped internal filter member (60) to be discharged through the first through hole (210a). At this time, a second downward guide (222) may be formed in the second upper cap member (220) to extend downward to surround the outer surface of the first upper cap member (210), thereby enabling a stable connection between the first upper cap member (210) and the second upper cap member (220). An O-ring (OR) may be provided between the first downward guide (212) and the second downward guide (222) to prevent the discharged domestic water (W2) from flowing back into the raw water path (PW1).

[0056] As illustrated in FIGS. 5 and 7, in a water purifier equipped with a composite filter according to one embodiment of the present invention, the filtration unit (200) may include a third upper cap member (230) which is stacked and fixed so that a post-processing internal filter member (80) is placed on the upper surface of a second upper cap member (220), and a fourth upper cap member (240) which is spaced apart from the upper surface of the third upper cap member (230) at a certain distance so that a second water purification channel (PC2) through which second water purification (C2) received from the outside flows is provided. That is, the third upper cap member (230) and the fourth upper cap member (240) are stacked, and the post-processing internal filter member (80) is fixedly positioned at the bottom of the third upper cap member (230). By configuring the second purified water (C2) received from the outside to flow through the second purified water flow path (PC2) formed between the third upper cap member (230) and the fourth upper cap member (240), it is possible to improve manufacturability through simplification of the configuration.

[0057] At this time, as illustrated in FIG. 5 and FIG. 7, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the third upper cap member (230) includes a third upward guide (231) that extends upward to allow the third purified water (C3) to flow, and the fourth upper cap member (240) includes a fourth upward guide (241) that extends upward to allow the second purified water (C2) to flow, and the third upward guide (231) and the fourth upward guide (241) may be spaced apart from each other by a certain distance so that the second purified water flow path (PC2) is extended and formed. That is, the third purified water (C3) being discharged flows into the inner side of the third upward guide (231) formed in the third upper cap member (230), and the second purified water (C2) being received flows into the inner side of the fourth upward guide (241) formed in the fourth upper cap member (240). Since the third upper cap member (230) and the fourth upper cap member (240) are spaced apart from each other by a certain distance so that the second purified water flow path (PC2) is formed, it is possible to form an independent flow path where the second purified water (C2) and the third purified water (C3) are not mixed, and manufacturability can be improved through the simplification of the configuration. In addition, the third water purification channel (PC3) through which the third water purification (C3) is discharged can be formed by being spaced apart from each other at a certain distance between the second upward guide (221) and the third upward guide (231), thereby enabling stable discharge of the third water purification (C3) and preventing the discharged third water purification (C3) from mixing with the discharged domestic water (W2).

[0058] Additionally, as illustrated in FIGS. 5 and 7, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the third upper cap member (230) may include a third downward guide (232) that extends downward so that the post-processing internal filter member (80) is fixedly positioned. This third downward guide (232) may include a third-1 downward guide (232a) provided on the outer side in the radial direction (r) to fix the outer side of the post-processing internal filter member (80), and a third-2 downward guide (232b) provided on the inner side in the radial direction (r) to fix the inner side of the post-processing internal filter member (80). That is, the post-processing internal filter member (80) is stably fixed through the third downward guide (232) formed by extending downward from the lower surface of the third upper cap member (230), thereby improving the durability of the water purifier.

[0059] In addition, as illustrated in FIGS. 5 and 7, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the fourth upper cap member (240) includes a fourth downward guide (242) that extends downward to surround the outer surface of the third upper cap member (230), and the fourth downward guide (242) may be extended to the outer surface of the second upper cap member (220). That is, the fourth downward guide (242), which is formed to extend downward from the lower surface of the fourth upper cap member (240), is configured to extend downward to surround the outer surface of the third upper cap member (230) and extend to the outer surface of the second upper cap member (220), thereby stably fixing the post-processing internal filter member (80) and improving the durability of the water purifier.

[0060] At this time, as illustrated in FIGS. 5 and 6, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the filtration unit (200) may further include a lower cap member (250) having a lower guide (251) that extends upward so that a post-processing internal filter member (80) is fixedly positioned at the top. An auxiliary lower guide (252) positioned inward in the radial direction (r) may be provided in this lower cap member (250). The auxiliary lower guide (252) may have a first part that supports the inner side of the post-processing internal filter member (80) and a second part that is spaced outward in the radial direction (r) from the inner surface of the post-processing internal filter member (80), and this auxiliary lower guide (252) may have a stepped structure so that the first part and the second part are formed. A third purified water (C3) flows through the spaced-out space between the second part and the post-processing internal filter member (80). That is, the post-processing internal filter member (80) can be stably fixed through the lower guide (251) formed by extending upward from the upper surface of the lower cap member (250), thereby improving the durability of the water purifier. In addition, since the post-processing internal filter member (80) can be fixed through the third and fourth upper cap members (230, 240) and the lower cap member (250), the composite filter can be modularized through a sub-assembly process, thereby improving workability. At this time, an O-ring (OR) can be provided between the fourth downward guide (242) and the lower guide (251) to prevent the incoming second purified water (C2) from flowing back into the raw water path (PW1).

[0061] FIG. 11 is a cross-sectional view illustrating the state in which a filtration unit of a water purifier equipped with a composite filter according to one embodiment of the present invention is installed in a housing.

[0062] As illustrated in FIG. 11, in a water purifier equipped with a composite filter according to an embodiment of the present invention, a raw water flow path (PW1) through which raw water (W1) flows is provided between the inner surface of a body member (120) and the outer surface of a spiral-wound internal filter member (60), and the spiral-wound internal filter member (60) may be spaced apart from the lower surface of the body member (120) so that the raw water flow path (PW1) is formed to extend inward in the radial direction (r) to the lower part of the spiral-wound internal filter member (60). That is, a raw water flow path (PW1) is formed between the body member (120) and the spiral-wound internal filter member (60), and the spiral-wound internal filter member (60) is spaced apart from the lower surface of the body member (120) so that the raw water flow path (PW1) extends to the lower part of the spiral-wound internal filter member (60). By configuring the system so that the raw water (W1) can pass through the spiral-wound internal filter member (60) after moving to the lower part of the spiral-wound internal filter member (60), the first purified water (C1) and domestic water (W2) are stably generated in a separated state, thereby ensuring the operational stability of the water purifier.

[0063] As illustrated in FIG. 5, in a water purifier equipped with a composite filter according to an embodiment of the present invention, a central tube (61) may be provided on the inner surface of a spiral-wound internal filter member (60) to support the spiral-wound internal filter member (60) so that it is wound in a spiral shape, and a second through hole (61a) may be formed so that the first purified water (C1) flows into the first purified water flow path (PC1) formed inside the spiral-wound internal filter member (60). That is, while the spiral-wound internal filter member (60) is wound in a spiral shape on the central tube (61), the first upper cap member (210) is seated on the upper surface, and the domestic water (W2) discharged from the upper surface of the spiral-wound internal filter member (60) may move to the domestic water flow path (PW2) through the first through hole (210a) and then be discharged to the outside. At this time, an O-ring (OR) may be provided between the upper part of the central tube (61) and the first upward guide (211) to prevent the discharged domestic water (W2) from flowing into the first water purification channel (PC1). Additionally, the first purified water (C1) moving through the inner surface of the spiral-wound internal filter member (60) moves to the first water purification channel (PC1) through the second through hole (61a) of the central tube (61). That is, the central tube (61) is provided on the inner circumference of the spiral-wound internal filter member (60), so that the spiral-wound internal filter member (60) is arranged while being wound in a spiral shape, and the first water purification channel (PC1) formed inside the spiral-wound internal filter member (60) is stably maintained, thereby ensuring operational reliability through the smooth flow of the first purified water (C1).

[0064] At this time, as illustrated in FIG. 10, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the fourth upper cap member (240) includes at least two first support protrusions (243) formed to protrude outwardly in the radial direction (r) around the outer circumference, and the first support protrusions (243) are spaced apart from each other at equal intervals. That is, a first support projection (243) is formed protruding outward in the radial direction (r) around the outer circumference of the fourth upper cap member (240) to support the inner surface of the body member (120), thereby securing a raw water flow path (PW1) so that raw water (W1) received from the upper part of the housing part (100) can move to the filtration part (200), and the first support projection (243) is arranged at equal intervals so that raw water can move evenly in the circumference of the fourth upper cap member (240), thereby improving the flow of raw water (W1) and ensuring product reliability. At this time, a second support projection protruding outward in the radial direction (r) can also be formed around the outer circumference of the third upper cap member (230), and since the second support projection supports the inner surface of the fourth upper cap member (240), the second purified water (C2) received from the outside can flow stably.

[0065] As illustrated in FIG. 3, in a water purifier equipped with a composite filter according to an embodiment of the present invention, the valve unit (300) for controlling the flow of raw water (W1), first purified water (C1), second purified water (C2), third purified water (C3), and domestic water (W2) may further include a control unit (400) for controlling the operation of the valve unit (300). The valve unit (300) may include a first valve (310) for controlling the flow of raw water (W1), a second valve (320) for controlling the flow of the first purified water (C1), a third valve (330) for controlling the flow of the second purified water (C2), a fourth valve (340) for controlling the flow of the third purified water (C3), and a fifth valve (350) for controlling the flow of domestic water (W2). That is, by controlling the valve unit (300) through the control unit (400), the flow of raw water (W1), first to third purified water (C1, C2, C3) and domestic water (W2) can be controlled, and product reliability can be ensured by effectively preventing these fluids from flowing backward.

[0066] As previously described, since it is possible to receive raw water (W1), discharge first purified water (C1), receive second purified water (C2), discharge third purified water (C3), and also discharge domestic water (W2), the convenience of the user can be improved by integrating a spiral-wound internal filter member (60) to form a composite filter. Additionally, the head member (110) of the housing part (100) is provided with first to fourth partition walls (111, 112, 113, 114) so ​​that an independent flow path is formed in which raw water (W1), first to third purified water (C1, C2, C3), and domestic water (W2) are not mixed, thereby concentrating the tube through which raw water (W1), first to third purified water (C1, C2, C3), and domestic water (W2) flow at the upper part of the composite filter, thereby improving the freedom of layout design for other parts, and the first upper cap member (210) and the second upper cap member (220) are stacked in the filtration part (200), and the discharged domestic water (W2) flows through the domestic water flow path (PW2) formed between the first upper cap member (210) and the second upper cap member (220), so that the first upper cap member (210) By forming a through hole (210a), the axial height of the composite filter is reduced, making it possible to miniaturize it and improve manufacturability through simplified configuration.

[0067] Although an embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0068] 10: Raw water inlet port 11: Pressure reducing valve 20: 1st purified water outlet port 30: 2nd purified water inlet port 40: 3rd purified water outlet port 50: Domestic water discharge port 51: Sterilization module 60: Spiral-wound internal filter component 61: Central tube 61a: Second through hole 70: External filter component 80: Post-processing internal filter component 90 : Preprocessing filter 100 : Housing part 110 : Head member 111: 1st compartment wall 112: 2nd compartment wall 113: 3rd compartment wall 114: 4th compartment wall 120 : Body part 200 : Filter part 210: First upper cap member 210a: First through hole 211: 1st Upward Guide 212: 1st Downward Guide 220: Second upper cap member 220a: Spacer 221: 2nd Upward Guide 222: 2nd Downward Guide 230: Third upper cap member 231: Third upward guide 232 : 3rd Downward Guide 232a : 3-1 Downward Guide 232b : 3-2 Downward Guide 240 : 4th Upper Cap Part 241: 4th Upward Guide 242: 4th Downward Guide 243: First support projection 250: Lower cap member 251: Lower Guide 252: Auxiliary Lower Guide 300: Valve section 310: First valve 320: 2nd valve 330: 3rd valve 340: 4th valve 350: 5th valve 400 : Control unit r : Radial direction C1: First integer C2: Second integer C3 : Third integer OR : O-ring PC1: 1st integer flow path PC2: 2nd integer flow path PC3: Third integer Euro PW1: Raw water Euro PW2: Domestic water flow path RC1: 1st water purification area RC2: Second integer area RC3: Third integer area RW1: Raw water area RW2: Domestic water area W1 : Raw water W2 : Domestic water

Claims

Claim 1 A housing part equipped with a raw water inlet port for receiving raw water, a first purified water outlet port for discharging filtered first purified water, a second purified water inlet port for receiving second purified water filtered from the outside, a third purified water outlet port for discharging filtered third purified water, and a domestic water outlet port for discharging domestic water generated during the filtration process; The filter unit comprises: a spiral-shaped internal filter member disposed inside the housing unit to filter the raw water to produce the first purified water; an external filter member disposed outside the housing unit to filter the first purified water to produce the second purified water; and a post-processing internal filter member disposed inside the housing unit to filter the second purified water to produce the third purified water; wherein the housing unit comprises a head member provided with a first partition wall preventing the mixing of the raw water and the second purified water, a second partition wall preventing the mixing of the second purified water and the third purified water, a third partition wall preventing the mixing of the third purified water and the domestic water, and a fourth partition wall preventing the mixing of the domestic water and the first purified water; and a body member extending from the head member and having the filter unit disposed inside therein; wherein the filter unit comprises a first upper cap member in which the spiral-shaped internal filter member is fixedly disposed at the bottom, and a domestic water flow path through which the domestic water discharged from the spiral-shaped internal filter member flows. A water purifier equipped with a composite filter, comprising a second upper cap member spaced apart from the upper surface of an upper cap member at a certain distance, wherein the first upper cap member includes a first through hole that connects the interior of the spiral-shaped internal filter member with the domestic water flow path so that the domestic water discharged from the spiral-shaped internal filter member disposed at the bottom flows into the domestic water flow path. Claim 2 A water purifier equipped with a composite filter according to claim 1, wherein the first upper cap member includes a first upward guide that extends upward to allow the first purified water to flow, and the second upper cap member includes a second upward guide that extends upward to allow the domestic water to flow, and the first upward guide and the second upward guide are spaced apart from each other by a certain distance so as to extend and form the domestic water flow path. Claim 3 A water purifier equipped with a composite filter according to claim 1, wherein the first upper cap member includes a first downward guide that extends downward so as to fix the spiral-wound internal filter member. Claim 4 A water purifier equipped with a composite filter according to claim 1, wherein the filtration unit comprises a third upper cap member that is stacked and fixed so that the post-processing internal filter member is positioned on the upper surface of the second upper cap member, and a fourth upper cap member that is spaced apart from the upper surface of the third upper cap member at a certain distance so as to provide a second water purification channel through which the second water purification water received from the outside flows. Claim 5 A water purifier equipped with a composite filter according to claim 4, wherein the third upper cap member includes a third upward guide that extends upward to allow the third purified water to flow, and the fourth upper cap member includes a fourth upward guide that extends upward to allow the second purified water to flow, and the third upward guide and the fourth upward guide are spaced apart from each other by a certain distance so as to extend and form the second purified water flow path. Claim 6 A water purifier equipped with a composite filter according to claim 4, wherein the third upper cap member includes a third downward guide that extends downward so as to fix the post-processing internal filter member. Claim 7 A water purifier equipped with a composite filter according to claim 4, wherein the fourth upper cap member includes a fourth downward guide that extends downward to surround the outer surface of the third upper cap member, and the fourth downward guide extends to the outer surface of the second upper cap member. Claim 8 A water purifier equipped with a composite filter according to claim 4, wherein the filtration unit further comprises a lower cap member having a lower guide that extends upward so that the post-processing internal filter member is fixedly positioned at the top. Claim 9 A water purifier equipped with a composite filter according to claim 1, wherein a raw water flow path is provided between the inner surface of the body member and the outer surface of the spiral-wound internal filter member, and the spiral-wound internal filter member is spaced apart from the lower surface of the body member so that the raw water flow path is formed to extend radially inward to the lower part of the spiral-wound internal filter member. Claim 10 A water purifier equipped with a composite filter according to claim 9, wherein the inner surface of the spiral-wound internal filter member supports the spiral-wound internal filter member so that it is wound in a spiral shape, and a central tube having a second through hole formed therein is provided so that the first purified water flows through a first purified water flow path formed inside the spiral-wound internal filter member. Claim 11 A water purifier equipped with a composite filter according to claim 4, wherein the fourth upper cap member comprises at least two first support protrusions formed to protrude radially outwardly around the outer circumference, and the first support protrusions are spaced apart from each other at equal intervals. Claim 12 A water purifier equipped with a composite filter according to claim 1, further comprising a valve unit for controlling the flow of the raw water, the purified water, and the domestic water, and a control unit for controlling the operation of the valve unit.

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