Water purifier with composite filter element

Abstract

The present application relates to a water purifier with a composite filter, in particular to a water purifier with a composite filter, which can not only realize raw water inflow, second purified water outflow, external treated water inflow, third purified water outflow, but also can realize domestic water discharge, so that additional functions can be realized by using external treatment components during the process of raw water through the composite filter.

Description

Technical Field

[0001] This invention relates to a water purifier with a composite filter element. Specifically, it relates to a water purifier with a composite filter element that can not only realize the intake of raw water, the output of second purified water, the intake of externally treated water, and the output of third purified water, but also realize the discharge of domestic water. Thus, during the process of raw water passing through the composite filter element, additional functions can be realized by using external treatment components. Background Technology

[0002] Typically, a water purifier is a device that filters incoming raw water into purified drinking water and provides it to the user. To filter the raw water, such water purifiers use multiple filter cartridges. As mentioned above, using individual filter cartridges increases the complexity of the internal layout of the water purifier, increasing the volume occupied by each filter cartridge and thus increasing the overall size of the water purifier. Therefore, to solve this problem, composite filter cartridges that integrate all filter cartridges are used.

[0003] The water purifier disclosed in Korean Patent Publication No. 2021-0040502 by Kovitech Co., Ltd. includes a composite filter element for filtering raw water. The composite filter element comprises a first filter material and a second filter material, each of which can be selected from a single filter element, such as known filter materials like sludge filters, pre-activated carbon filters, post-activated carbon filters, antibacterial filters, and various functional filters. However, this composite filter element only has a flow path for the raw water, primary purified water, and secondary purified water; it lacks an external treatment component for additionally treating the primary purified water at the outlet. Therefore, the implementation of additional functions using such an external treatment component is limited. Furthermore, it lacks a flow path for the concentrated domestic water discharged through a reverse osmosis filter element. Consequently, it suffers from the problem of not being able to integrate a reverse osmosis filter element into a composite filter element.

[0004] Korean Patent Publication No. 2019-0060390 published by ALKAMEDI discloses a conventional composite filter element. In this composite filter element, an activated carbon filter element, a nano-filter element, and a calcium filter element are integrally mounted on the upper cover, and the incoming raw water flows through these filter elements sequentially and is filtered. However, this composite filter element configuration only allows for sequential water treatment between the internal filter elements, thus limiting the implementation of additional functions utilizing external treatment components during the flow of raw water through the composite filter element.

[0005] A composite filter element for a water purifier, disclosed in Korean Patent Publication No. 2003-0096867 of Woongjin Kovi Co., Ltd., includes a composite filter element for filtering raw water. The composite filter element has a sediment filter element on the outer side, and on its inner side are a first filter element section with overlapping ACF filter elements, a second filter element section with flat ACF filter elements, and a third filter element section with AC and UF filter elements. When manufacturing the composite filter element, the first to third filter element sections are sequentially stacked inside a housing, and then a fused cap is formed to manufacture the composite filter element. However, when configured as described above, the stacking of each filter element section consumes a considerable amount of time, resulting in reduced workability. Furthermore, the inlet for raw water intake is located at the bottom, while the outlet for purified water output is located at the top. Therefore, the pipes for the flow of raw water and purified water are respectively arranged at the top and bottom of the composite filter element. Consequently, it is not easy to install and replace the composite filter element, resulting in a complex layout and reduced space efficiency.

[0006] Guangdong Water Shield Health Technology Co., Ltd.'s Chinese Utility Model Publication No. 212151806 discloses a conventional composite filter element, which discloses a structure in which a pretreatment filter element and a posttreatment filter element are stacked inside an RO filter element. However, this composite filter element is configured such that the incoming raw water flows through the above filter elements sequentially, thus limiting the realization of additional functions utilizing external treatment components. Furthermore, since the pretreatment filter element and the posttreatment filter element are stacked inside the RO filter element, there is a problem that conventional RO filter element structures (structures with a membrane wound around the central tube) cannot be used.

[0007] Midea Group Co., Ltd. disclosed a conventional composite filter element in its Chinese Utility Model Publication No. 209307056, which disclosed a structure in which a PAC filter element and an activated carbon filter element are stacked inside an RO filter element. However, in this type of composite filter element, the raw water can only flow through the above filter elements sequentially. Therefore, the realization of additional functions using external treatment components is limited. Furthermore, the stacked arrangement of the PAC filter element and activated carbon filter element inside the RO filter element results in the inability to use a conventional RO filter element structure (a structure with a membrane wound around the central tube).

[0008] Patent Document 1: Korean Patent Publication No. 2021-0040502

[0009] Patent Document 2: Korean Patent Publication No. 2019-0060390

[0010] Patent Document 3: Korean Patent Publication No. 2003-0096867

[0011] Patent Document 4: Chinese Utility Model Publication No. 212151806

[0012] Patent Document 5: Chinese Utility Model Publication No. 209307056 Summary of the Invention

[0013] The problem the invention aims to solve

[0014] To address the aforementioned problems, the present invention aims to provide a water purifier with a composite filter element according to one aspect of the invention. This purifier not only enables the intake of raw water, the output of second purified water, the intake of externally treated water, and the output of third purified water, but also the discharge of domestic wastewater. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using external treatment components. Furthermore, by integrating three internal filter elements, including a spirally wound internal filter element, into a single composite filter element, the miniaturization and replacement of the water purifier are facilitated, improving user convenience. Moreover, by modularizing each filter element into a first module containing a pre-treatment internal filter element and a spirally wound internal filter element, and a second module containing a post-treatment internal filter element, the composite filter element is constructed by stacking the first and second modules. This improves manufacturability. The discharge pipe component is disposed through the center of the first module, allowing the third purified water generated from the second module located below the first module to be discharged externally. This prevents the third purified water from mixing with the second purified water and ensures the operational stability of the water purifier. Furthermore, the head component of the housing is provided with a first to a fourth partition wall to form independent flow paths for raw water, second purified water, externally treated water, third purified water and domestic water, so that the pipes for the flow of raw water, second purified water, externally treated water, third purified water and domestic water are concentrated in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.

[0015] The purpose of this invention is to provide a water purifier with a composite filter element in one embodiment of the invention, wherein a spirally wound internal filter element component is wound around a central tube in a spiral shape, and a second purified water through hole is formed in such a way that the second purified water flows into a second purified water flow path disposed inside the central tube. A discharge pipe component inserted through the center of the central tube is disposed at a certain distance from the central tube, thereby stably maintaining the second purified water flow path and improving the reliability of operation by allowing the second purified water to flow smoothly.

[0016] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the fourth partition wall is arranged to extend along the discharge pipe component in the axial direction, thereby effectively preventing the third purified water and the second purified water from mixing, thereby improving the working stability of the water purifier.

[0017] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the third partition wall is arranged to extend along the central tube in the axial direction, thereby effectively preventing the second purified water from mixing with the domestic water, thus improving the working stability of the water purifier.

[0018] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the discharged domestic water is discharged to the outside through a domestic water flow path formed between a first upward guide member and a central pipe. The first upward guide member is provided on a first upper cover component, thereby preventing mixing with the incoming raw water or the outgoing second purified water, thereby improving the working stability of the water purifier.

[0019] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the second partition wall is arranged to extend along the first upward guide in the axial direction, thereby effectively preventing the incoming raw water from mixing with the discharged domestic water, thereby improving the working stability of the water purifier.

[0020] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the pretreatment internal filter element component can be fixed by arranging a first upper cover component and a first lower cover component on the upper and lower parts of the pretreatment internal filter element component, respectively. Thus, the modularity of the first module is achieved through a component assembly process, thereby improving operability.

[0021] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, an internal guide supports the internal surface of the pre-treated internal filter element component, thereby improving structural stability. Through the first purified water through hole formed in the internal guide, the first purified water flows smoothly into the interior, thereby improving the working stability of the water purifier.

[0022] The purpose of this invention is to improve the structural stability of the first module in a water purifier with a composite filter element according to an embodiment of the invention, wherein the internal guide is configured to connect the first upper cover component and the first lower cover component.

[0023] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the internal guide is disposed separately from the outer surface of the spiral wound internal filter element component, thereby stably forming a first purified water flow path therebetween. This first purified water flow path extends to the lower part of the spiral wound internal filter element component. Therefore, the first purified water that moves into the interior through the first purified water through hole formed in the internal guide is stably moved to the lower part of the spiral wound internal filter element component, thereby improving the working stability of the water purifier.

[0024] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, a second upper cover component is spaced apart and disposed above a first upper cover component, thereby stably forming a raw water flow path and ensuring that the incoming raw water can flow smoothly. Furthermore, a second downward support guide extends and is disposed to a first lower cover component, thereby preventing the raw water entering the interior of the first module from flowing out of the first module and mixing with the incoming external treated water, thus preventing the water quality of the external treated water and the third purified water from deteriorating and improving user satisfaction.

[0025] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, a first support protrusion is provided around the outer peripheral surface of the first upper cover component, protruding outward in a radial direction, so that the first upper cover component supports the inner surface of the second upper cover component, and ensures the flow path of the raw water by allowing the incoming raw water to flow around the first upper cover component. The first support protrusions are arranged at equal intervals, so that the raw water moves uniformly along the circumferential direction of the first upper cover component, thereby improving the reliability of the product by improving the flow of raw water.

[0026] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the incoming raw water flows through a raw water flow path formed between a second upward guide and a first upward guide. The second upward guide is disposed on a second upper cover component, and the first upward guide is disposed on a first upper cover component. Therefore, it will not mix with the incoming externally treated water or the discharged domestic water, thereby improving the working stability of the water purifier.

[0027] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the first partition wall is arranged to extend along the second upward guide in the axial direction, thereby effectively preventing the raw water entering the water from mixing with the externally treated water entering the water, thereby improving the working stability of the water purifier.

[0028] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the assembly of the second module can be achieved through the third upper cover component and the third lower cover component, thereby improving workability. The discharge pipe component is configured to extend upward from the third lower cover component and penetrate through the third upper cover component, thereby stably forming a third purified water flow path during the stacking of the first module and the second module, thereby improving manufacturability.

[0029] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, with the connector body of the connector component pressed into and fixed inside the first lower cover component, the upward rib extending upward from the connector body is combined with the central tube, and the downward rib extending downward from the connector body is combined with the third upper cover component, thereby making the first module and the second module easily combined, thereby improving manufacturability.

[0030] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the third upward guide is formed by extending upward along the axial direction, which makes it easy to combine the connector component and the third upper cover component, thereby improving manufacturability. In particular, if the outer diameter of the third upward guide is formed to be the same as that of the central tube, the upward rib and the downward rib can be formed in a mutually symmetrical shape. Therefore, when the operator uses the connector component to combine the first module and the second module, even if the operator flips the connector component to combine them, a stable combination can be achieved, thereby improving manufacturability.

[0031] The purpose of this invention is that, in a water purifier with a composite filter element according to an embodiment of the invention, the flow of raw water, purified water and domestic water can be controlled by the control unit and the backflow of these fluids can be effectively prevented, thereby improving product reliability.

[0032] The purpose of this invention is, according to another aspect of the invention, a water purifier with a composite filter element can not only realize the inlet of raw water, the outlet of first purified water, the inlet of second purified water, and the outlet of third purified water, but also the discharge of domestic wastewater. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using an external filter element. Furthermore, by integrating a reverse osmosis filter element or a spirally wound internal filter element such as a hollow fiber membrane filter element into a single composite filter element, user convenience can be improved. A first to a fourth partition wall is provided in the head component of the housing to form independent flow paths for raw water, purified water, and domestic wastewater, preventing them from mixing. This concentrates the flow pipes for raw water, purified water, and domestic wastewater in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts. A first upper cover component and a second upper cover component are stacked in the filter section. A first through hole is formed in the first upper cover component, so that the discharged domestic water flows through the domestic water flow path formed between the first upper cover component and the second upper cover component. Furthermore, miniaturization is achieved by reducing the axial height of the composite filter element, and manufacturability is improved by simplifying the structure.

[0033] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the first purified water flows inside the first upward guide formed on the first upper cover member, and the discharged domestic water flows inside the second upward guide formed on the second upper cover member. The first upper cover member and the second upper cover member are separated from each other by a certain distance in such a way as to form a domestic water flow path. Therefore, an independent flow path can be formed in which the first purified water and domestic water will not mix, and the manufacturability is improved by simplifying the structure.

[0034] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a first downward guide extending downward from the lower part of the first upper cover component stably fixes the spiral wound internal filter element component, thereby improving the durability of the water purifier and allowing domestic water generated through the spiral wound internal filter element component to be discharged through the first through hole, thereby improving the working stability of the water purifier.

[0035] The object of the present invention is that, in another embodiment of the present invention, a water purifier having a composite filter element, a third upper cover component and a fourth upper cover component are stacked, and with the post-treatment internal filter element component fixedly disposed at the lower part of the third upper cover component, second purified water entering from the outside flows through a second purified water flow path formed between the third upper cover component and the fourth upper cover component, thereby improving manufacturability by simplifying the structure.

[0036] The object of the present invention is that, in another embodiment of the water purifier with a composite filter element, the third purified water flowing out flows inside the third upward guide formed on the third upper cover member, and the second purified water flowing in flows inside the fourth upward guide formed on the fourth upper cover member. The third upper cover member and the fourth upper cover member are separated from each other by a certain distance in such a way as to form the second purified water flow path. Therefore, an independent flow path in which the second purified water and the third purified water will not mix can be formed, and manufacturability is improved by simplifying the structure.

[0037] The purpose of this invention is to improve the durability of a water purifier with a composite filter element in another embodiment of the invention by stably fixing the internal filter element component of the post-treatment process through a third downward guide member that extends downward from the lower part of the third upper cover component.

[0038] The object of the present invention is that, in another embodiment of the present invention, in a water purifier having a composite filter element, a fourth downward guide member, which extends downward from the lower part of the fourth upper cover member, extends downward in a manner surrounding the outer peripheral surface of the third upper cover member and extends to the outer peripheral surface of the second upper cover member, thereby stably fixing the post-treatment internal filter element member and improving the durability of the water purifier.

[0039] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the post-treatment internal filter element component is stably fixed by a lower guide extending upward from the upper surface of the lower cover component. This not only improves the durability of the water purifier, but also allows the post-treatment internal filter element component to be fixed by the third upper cover component, the fourth upper cover component, and the lower cover component. Therefore, the modularity of the composite filter element can be achieved through the component assembly process, thereby improving operability.

[0040] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a raw water flow path is formed between the main body component and the spiral wound internal filter element component. The spiral wound internal filter element component is separated from the lower surface of the main body component so that the raw water flow path extends to the lower part of the spiral wound internal filter element component. Therefore, after the raw water moves to the lower part of the spiral wound internal filter element component, it can pass through the spiral wound internal filter element component, thereby stably forming a state that distinguishes between first purified water and domestic water, and improving the working stability of the water purifier.

[0041] The purpose of this invention is to provide a central tube on the inner circumferential surface of a spirally wound internal filter element in another embodiment of the present invention, so that the spirally wound internal filter element is wound and arranged in a spiral shape, and a first purified water flow path formed on the inner side of the spirally wound internal filter element is stably maintained, thereby improving the reliability of operation by allowing the first purified water to flow smoothly.

[0042] The object of the present invention is that, in another embodiment of the present invention, a water purifier with a composite filter element is provided with a first support protrusion protruding outward in the radial direction around the outer peripheral surface of the fourth upper cover component, thereby supporting the inner surface of the main body component and ensuring the raw water flow path by moving the raw water entering the upper part of the housing to the filter part. The first support protrusions are arranged at equal intervals so that the raw water moves uniformly along the circumferential direction of the fourth upper cover component, thereby improving the reliability of the product by improving the raw water flow.

[0043] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the flow of raw water, purified water and domestic water can be controlled by the control unit controlling the valve unit, and the backflow of these fluids can be effectively prevented, thereby improving product reliability.

[0044] The purpose of this invention is that, according to another aspect of the invention, a water purifier with a composite filter element can not only realize the inlet of raw water, the outlet of first purified water, the inlet of externally treated water, and the outlet of third purified water, but also realize the discharge of domestic water. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using external treatment components. Furthermore, by integrating the spirally wound internal filter element components into a single composite filter element, user convenience is improved. First to fourth partition walls are provided in the head component of the housing to form a system for the inlet of raw water, first purified water, externally treated water, and third purified water. The independent flow paths that prevent the mixing of purified water and domestic water allow the pipes carrying raw water, first purified water, externally treated water, third purified water, and domestic water to be concentrated in the upper part of the composite filter element. This increases the flexibility of layout design for other parts. In the filtration section, pretreatment internal filter elements and posttreatment internal filter elements are stacked by the first and second upper cover components. Spiral wound internal filter elements are arranged on the inner side of these internal filter elements in the radial direction. This allows the composite filter element to be manufactured using the already manufactured spiral wound internal filter elements, thereby improving manufacturability.

[0045] The purpose of this invention is to provide a connecting pipe in a second lower cover component for fixing the post-treatment internal filter element and the spiral-wound internal filter element in another embodiment of the present invention. This connecting pipe extends along the axial direction inside the pre-treatment internal filter element and the post-treatment internal filter element, thereby preventing the first purified water passing through the pre-treatment internal filter element and the third purified water passing through the post-treatment internal filter element from mixing with the incoming externally treated water, thereby improving the working stability of the water purifier.

[0046] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a third upper cover component is disposed below the first upper cover component, and is configured separately from the first upper cover component in such a way as to form a first purified water flow path for the first purified water to flow, thereby improving the working stability of the water purifier as the first purified water is stably discharged.

[0047] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a first partition extending downward from the lower surface of the first upper cover component supports the upper surface of the third upper cover component, thereby stably maintaining the separation distance between the first upper cover component and the third upper cover component, and thus improving the structural stability of the composite filter element.

[0048] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the first upward guide and the third upward guide are arranged separately from each other, thereby extending to form a first purified water flow path, so that the first purified water flows out smoothly, thereby improving the working stability of the water purifier.

[0049] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the first partition wall is arranged to extend along the first upward guide in an axial direction, thereby effectively preventing the first purified water from being mixed with the raw water entering the system, thereby improving the water quality of the final purified water and increasing user satisfaction.

[0050] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the second partition wall is arranged to extend along the third upward guide in an axial direction, thereby effectively preventing the first purified water from being discharged from the purifier from mixing with the externally treated water entering the purifier, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final discharged third purified water, and improving user satisfaction.

[0051] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a third downward support guide extending downward from the third upper cover component is combined with a connecting pipe, thereby effectively preventing the first purified water from being discharged from the outlet from mixing with the externally treated water entering the outlet, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final discharged third purified water, and improving user satisfaction.

[0052] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a fourth upper cover component is disposed below a third upper cover component and is separated from the third upper cover component in such a way as to form an external treated water flow path for external treated water to flow, thereby improving the working stability of the water purifier as the external treated water flows stably.

[0053] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a second partition formed by extending downward from the lower surface of the third upper cover component supports the upper surface of the fourth upper cover component, thereby stably maintaining the separation distance between the third upper cover component and the fourth upper cover component, and thus improving the structural stability of the composite filter element.

[0054] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the fourth upward guide member is configured separately from the third upward guide member, thereby forming an external treatment water flow path, allowing the incoming external treatment water to flow smoothly, thereby improving the working stability of the water purifier.

[0055] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the third partition wall is arranged to extend along the fourth upward guide in the axial direction, thereby effectively preventing the incoming externally treated water from mixing with the discharged domestic water, thus preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final effluent third purified water, and improving user satisfaction.

[0056] The purpose of this invention is to improve the structural stability of the composite filter element in a water purifier with a composite filter element according to another embodiment of the invention.

[0057] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, when the spiral-wound internal filter element component is supported by being spirally wound around the central tube, the second purified water moves through the second purified water through hole into the interior of the central tube, thereby improving structural stability. The central tube is disposed through the second lower cover component, thereby allowing the second purified water to flow stably to the lower part of the second lower cover component, thus improving the working stability of the water purifier.

[0058] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the second downward guide supports the lower surface of the housing portion, thereby stably maintaining the separation between the second lower cover member and the lower surface of the housing portion, and the second purified water moving to the lower part of the second lower cover member moves smoothly through the third through hole formed in the second downward guide, thereby improving the working stability of the water purifier.

[0059] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the pretreatment internal filter element component can be fixed by respectively arranging a first upper cover component and a first lower cover component on the upper and lower parts of the pretreatment internal filter element component. Thus, the composite filter element can be modularized through the component assembly process, and the workability can be improved. A third partition supporting the upper surface of the second upper cover component is formed on the lower surface of the first lower cover component, thereby stably maintaining the interval between them, allowing the third purified water to flow smoothly, thereby improving the working stability of the water purifier.

[0060] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a fifth upper cover component is disposed above a first upper cover component and is separated from the first upper cover component in such a way as to form a raw water flow path for the raw water to flow, thereby improving the working stability of the water purifier as the raw water flows stably.

[0061] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the fifth upward guide member is configured separately from the first upward guide member and forms a raw water flow path, so that the incoming raw water flows smoothly, thereby improving the working stability of the water purifier.

[0062] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, the fourth partition wall is arranged to extend along the fifth upward guide in an axial direction, thereby effectively preventing the incoming externally treated water from mixing with the discharged domestic water, thus preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final effluent third purified water, and improving user satisfaction.

[0063] The purpose of this invention is that, in another embodiment of the water purifier with a composite filter element, a fifth downward support guide extends from the first upper cover component to the first lower cover component, thereby preventing the incoming raw water from mixing with the outgoing purified water, thus improving the working stability of the water purifier.

[0064] The purpose of this invention is to improve product reliability by controlling the flow of raw water, first purified water, externally treated water, third purified water, and domestic water through a control unit in a water purifier with a composite filter element in another embodiment of the invention.

[0065] means for solving problems

[0066] To achieve the above objectives, a water purifier with a composite filter element according to one aspect of the present invention is characterized by comprising: a housing portion having a raw water inlet port, a second purified water outlet port, an external treated water inlet port, a third purified water outlet port, and a domestic water outlet port, wherein the raw water inlet port is used to allow raw water to enter, the second purified water outlet port is used to allow filtered second purified water to exit, the external treated water inlet port is used to allow externally treated water generated by externally treating the second purified water to enter, the third purified water outlet port is used to allow filtered third purified water to exit, and the domestic water outlet port is used to discharge domestic water generated during the filtration process; and a filtration portion having a pretreatment internal filter element component, a spirally wound internal filter element component, an external treatment component, and a post-treatment internal filter element component, wherein the pretreatment internal filter element component is disposed inside the housing portion in such a way as to generate first purified water by filtering the raw water, the spirally wound internal filter element component is disposed inside the housing portion in such a way as to generate second purified water by filtering the first purified water, and the external treatment component... The filter element is disposed on the outside of the housing portion in such a way that it generates the externally treated water by treating the second purified water. The post-treatment internal filter element is disposed inside the housing portion in such a way that it generates the third purified water by filtering the incoming externally treated water. The housing portion includes: a head portion, which is provided with a first partition wall to prevent the raw water from mixing with the externally treated water, a second partition wall to prevent the raw water from mixing with the domestic water, a third partition wall to prevent the second purified water from mixing with the domestic water, and a fourth partition wall to prevent the second purified water from mixing with the third purified water; and a main body portion, which extends from the head portion and is provided with the filter portion inside. The filter portion includes: a first module, which is provided with the pre-treatment internal filter element and the spiral wound internal filter element in sequence; and a second module, which is stacked on the lower part of the first module and is provided with the post-treatment internal filter element. The second module includes a discharge pipe component, which is disposed through the center of the first module so that the third purified water is discharged to the outside.

[0067] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first module includes a central tube, which supports the spiral wound internal filter element component to be wound in a spiral shape and forms a second purified water through hole, so that the second purified water flows into the interior, and the discharge pipe component is disposed through the center of the central tube and is disposed at a certain distance apart, so as to form a second purified water flow path for the second purified water to flow between the central tube and the discharge pipe component.

[0068] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the fourth partition wall extends along the discharge pipe component in the axial direction.

[0069] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the third partition wall is arranged to extend along the central tube in the axial direction.

[0070] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first module includes a first upper cover component, on which the pretreatment internal filter element component is disposed on the outer side in the radial direction and the spiral wound internal filter element component is disposed on the inner side in the radial direction. The first upper cover component includes a first upward guide member, which is disposed at a certain distance from the central tube in order to form a domestic water flow path for allowing the discharged domestic water to flow.

[0071] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the second partition wall extends along the first upward guide member in an axial direction.

[0072] The water purifier with composite filter element according to an embodiment of the present invention is characterized in that the first module further includes a first lower cover component, which is fixedly configured with the pretreatment internal filter element component.

[0073] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first module further includes an internal guide that supports the internal surface of the pretreatment internal filter element component, so as to form a first purified water through hole in such a way that the first purified water flows inward.

[0074] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the internal guide is configured to connect the first upper cover component and the first lower cover component.

[0075] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the internal guide is disposed spaced apart from the outer surface of the spiral wound internal filter element component so that the first purified water flow path of the first purified water flow extends to the lower part of the spiral wound internal filter element component.

[0076] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first module further includes a second upper cover component, which is stacked on the upper part of the first upper cover component and is configured separately from the first upper cover component in order to form a raw water flow path. The second upper cover component includes a second downward support guide that extends to the first lower cover component.

[0077] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first upper cover component includes at least two first support protrusions that are formed around the outer peripheral surface and protrude outward in the radial direction, and the first support protrusions are arranged to be spaced apart from each other at equal intervals.

[0078] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the second upper cover component includes a second upward guide member, which is arranged at a certain distance from the first upward guide member in order to form a raw water flow path for the incoming raw water to flow.

[0079] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the first partition wall extends along the second upward guide member in an axial direction.

[0080] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the second module includes a third upper cover component and a third lower cover component for fixing the post-treatment internal filter element component, and the discharge pipe component extends upward from the third lower cover component and is configured to penetrate the third upper cover component.

[0081] A water purifier with a composite filter element according to an embodiment of the present invention is characterized by having a connector component for combining the first module with the second module. The connector component includes: a connector body that is pressed and fixed inside the first lower cover component; an upward rib that extends upward from the connector body in a manner that combines with the central tube; and a downward rib that extends downward from the connector body in a manner that combines with the third upper cover component.

[0082] The water purifier with a composite filter element according to an embodiment of the present invention is characterized in that the third upper cover component includes a third upward guide member that extends upward along the axial direction in a manner that engages with the inner surface of the downward rib, and the third upward guide member has the same outer diameter as the central tube.

[0083] A water purifier with a composite filter element according to an embodiment of the present invention is characterized in that it further includes: a valve section for controlling the flow of the raw water, the second purified water, the externally treated water, the third purified water and the domestic water; and a control section for controlling the operation of the valve section.

[0084] According to another aspect of the present invention, a water purifier with a composite filter element is characterized by comprising: a housing portion having a raw water inlet port, a first purified water outlet port, a second purified water inlet port, a third purified water outlet port, and a domestic water outlet port, wherein the raw water inlet port is used to allow raw water to enter, the first purified water outlet port is used to allow filtered first purified water to exit, the second purified water inlet port is used to allow second purified water filtered externally to enter, the third purified water outlet port is used to allow filtered third purified water to exit, and the domestic water outlet port is used to discharge domestic water generated during the filtration process; and a filtration portion having a spirally wound internal filter element, an external filter element, and a post-treatment internal filter element, wherein the spirally wound internal filter element is disposed inside the housing portion such that the first purified water is generated by filtering the raw water, the external filter element is disposed outside the housing portion such that the second purified water is generated by filtering the first purified water, and the post-treatment internal filter element is disposed inside the housing portion such that the third purified water is generated by filtering the second purified water. Internally, the aforementioned housing portion includes: a head component, which is provided with a first partition wall to prevent the raw water from mixing with the second purified water, a second partition wall to prevent the second purified water from mixing with the third purified water, a third partition wall to prevent the third purified water from mixing with the domestic water, and a fourth partition wall to prevent the domestic water from mixing with the first purified water; and a main body component extending from the head component and having the aforementioned filter portion disposed therein, the filter portion including: a first upper cover component, on which the aforementioned spirally wound internal filter element is fixedly disposed at its lower part; and a second upper cover component, which is disposed at a certain distance from the upper surface of the first upper cover component to provide a domestic water flow path for allowing the domestic water discharged from the spirally wound internal filter element to flow, the first upper cover component including a first through hole for connecting the interior of the spirally wound internal filter element with the domestic water flow path to allow the domestic water discharged from the spirally wound internal filter element disposed at the lower part of the first upper cover component to flow into the domestic water flow path.

[0085] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the first upper cover component includes a first upward guide that extends upward in a manner that allows the first purified water to flow, the second upper cover component includes a second upward guide that extends upward in a manner that allows the domestic water to flow, and the first upward guide and the second upward guide are arranged apart from each other at a certain distance so as to extend to form the domestic water flow path.

[0086] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the first upper cover component includes a first downward guide that extends downward in a manner that fixes the spirally wound internal filter element component.

[0087] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the filtration unit includes: a third upper cover member, which is stacked in such a way that the post-treatment internal filter element member is fixedly disposed on the upper part of the second upper cover member; and a fourth upper cover member, which is disposed at a certain distance from the upper surface of the third upper cover member, so as to provide a second purified water flow path for allowing the second purified water entering from the outside to flow.

[0088] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the third upper cover component includes a third upward guide that extends upward in a manner that allows the third purified water to flow, the fourth upper cover component includes a fourth upward guide that extends upward in a manner that allows the second purified water to flow, and the third upward guide and the fourth upward guide are arranged apart from each other at a certain distance so as to extend to form the second purified water flow path.

[0089] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the third upper cover component includes a third downward guide that extends downward in a manner that fixes the aforementioned post-treatment internal filter element component.

[0090] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the fourth upper cover component includes a fourth downward guide that extends downward in a manner surrounding the outer peripheral surface of the third upper cover component, and the fourth downward guide extends to the outer peripheral surface of the second upper cover component.

[0091] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the filtration section further includes a lower cover component, which is provided with an upwardly extending lower guide such that the post-treatment internal filter element component is fixedly disposed on the upper part.

[0092] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that a raw water flow path for allowing the raw water to flow is provided between the inner peripheral surface of the main body component and the outer peripheral surface of the spiral wound internal filter element component, and the spiral wound internal filter element component is arranged separately from the lower surface of the main body component so that the raw water flow path extends inward in the radial direction to the lower part of the spiral wound internal filter element component.

[0093] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that a central tube is provided on the inner circumferential surface of the spiral wound internal filter element component, which supports the spiral wound internal filter element component to be wound in a spiral shape, and a second through hole is formed in such a way as the first purified water flow direction forms a first purified water flow path inside the spiral wound internal filter element component.

[0094] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that the fourth upper cover component includes at least two first support protrusions that are formed around the outer peripheral surface and protrude outward in the radial direction, and the first support protrusions are arranged to be spaced apart from each other at equal intervals.

[0095] A water purifier with a composite filter element according to another embodiment of the present invention is characterized in that it further includes a valve section for controlling the flow of the raw water, the purified water and the domestic water; and a control section for controlling the operation of the valve section.

[0096] According to another aspect of the present invention, a water purifier with a composite filter element is characterized by comprising: a housing portion having a raw water inlet port, a first purified water outlet port, an external treated water inlet port, a third purified water outlet port, and a domestic water outlet port, wherein the raw water inlet port is used to allow raw water to enter, the first purified water outlet port is used to allow filtered first purified water to exit, the external treated water inlet port is used to allow externally treated water generated by externally treating the first purified water to enter, the third purified water outlet port is used to allow filtered third purified water to exit, and the domestic water outlet port is used to discharge domestic water generated during the filtration process; and a filtration unit having a pretreatment internal filter element component, an external treatment component, a spirally wound internal filter element component, and a post-treatment internal filter element component, wherein the pretreatment internal filter element component generates the first purified water by filtering the raw water. The following components are arranged inside the housing: the external treatment component is arranged outside the housing to generate externally treated water by treating the first purified water; the spiral-wound internal filter element is arranged inside the housing to generate second purified water by filtering the externally treated water; and the post-treatment internal filter element is arranged inside the housing to generate third purified water by filtering the second purified water, and is stacked below the pre-treatment internal filter element. The housing includes: a head component, which is provided with a first partition wall to prevent the raw water from mixing with the first purified water, a second partition wall to prevent the first purified water from mixing with the externally treated water, a third partition wall to prevent the externally treated water from mixing with the domestic water, and a fourth partition wall to prevent the third purified water from mixing with the raw water; and...

[0097] The main body extends from the head component and has the filter section disposed inside. The filter section includes: a first upper cover component, which has the pretreatment internal filter element component and the spiral wound internal filter element component disposed at its lower part, the pretreatment internal filter element component being disposed on the outer side in the radial direction and the spiral wound internal filter element component being disposed on the inner side in the radial direction; and a second upper cover component, which has the posttreatment internal filter element component disposed at its lower part and has the spiral wound internal filter element component disposed through it, the posttreatment internal filter element component being disposed on the outer side in the radial direction and the spiral wound internal filter element component being disposed on the inner side in the radial direction.

[0098] Another embodiment of the water purifier with a composite filter element of the present invention is characterized in that the filtration section further includes a second lower cover component, on which the post-treatment internal filter element component and the spiral wound internal filter element component are fixedly disposed at the upper part. The second lower cover component includes a connecting pipe disposed on the outer side of the spiral wound internal filter element component in the radial direction, for preventing the first purified water and the third purified water from mixing with the external treated water.

[0099] Another embodiment of the water purifier with a composite filter element is characterized in that the filtration section further includes a third upper cover component, which is stacked on the lower part of the first upper cover component and is configured to be separated from the first upper cover component in such a way that the first purified water is discharged to the outside through the first purified water flow path.

[0100] Another embodiment of the water purifier with a composite filter element is characterized in that a first partition is provided on the lower surface of the first upper cover component, and the first partition extends downward in a manner that supports the upper surface of the third upper cover component.

[0101] Another embodiment of the water purifier with a composite filter element is characterized in that the first upper cover component includes an upwardly extending first upward guide member, the third upper cover component includes an upwardly extending third upward guide member, and the first upward guide member and the third upward guide member are configured to be spaced apart from each other in order to form the first purified water flow path.

[0102] Another embodiment of the water purifier with a composite filter element is characterized in that the first partition wall extends along the first upward guide member in an axial direction.

[0103] Another embodiment of the water purifier with a composite filter element is characterized in that the second partition wall extends along the third upward guide member in an axial direction.

[0104] Another embodiment of the water purifier with a composite filter element is characterized in that the third upper cover component includes a third downward support guide, which is configured to extend downward in conjunction with the connecting pipe to prevent the first purified water from mixing with the externally treated water.

[0105] Another embodiment of the water purifier with a composite filter element is characterized in that the filtration section further includes a fourth upper cover component, which is stacked on the lower part of the third upper cover component, so that the external treated water flows through the external treated water flow path and is separated from the third upper cover component.

[0106] Another embodiment of the water purifier with a composite filter element is characterized in that a second partition is provided on the lower surface of the third upper cover component, which extends downward in a manner that supports the upper surface of the fourth upper cover component.

[0107] Another embodiment of the water purifier with a composite filter element is characterized in that the fourth upper cover component includes an upwardly extending fourth upward guide member, which is configured separately from the third upward guide member in order to form the external treatment water flow path.

[0108] Another embodiment of the water purifier with a composite filter element is characterized in that the third partition wall is arranged to extend along the fourth upward guide member in the axial direction.

[0109] Another embodiment of the water purifier with a composite filter element is characterized in that the fourth upper cover component includes a fourth downward support guide, which is arranged to extend downward along the axial direction in a manner that surrounds the spirally wound internal filter element component.

[0110] Another embodiment of the water purifier with a composite filter element is characterized in that the filtration section further includes a central tube, which supports the spirally wound internal filter element component to be wound in a spiral shape and forms a second purified water through hole, so that the second purified water flows into the interior, and the second lower cover component includes a second through hole, which is configured to pass through the central tube in such a way that the second purified water flowing through the central tube flows downward.

[0111] Another embodiment of the water purifier with a composite filter element is characterized in that the second lower cover component includes a downwardly extending second downward guide, the second downward guide including a third through hole for allowing the second purified water moving to the lower part of the second lower cover component to flow.

[0112] Another embodiment of the water purifier with a composite filter element of the present invention is characterized in that the filtration section further includes a first lower cover component, which is fixedly disposed on the upper part of the pretreatment internal filter element component. The first lower cover component includes a third partition, which is stacked on the upper part of the second upper cover component and extends downward in a manner supported on the upper surface of the second upper cover component, so as to form a third purified water flow path for the third purified water to flow.

[0113] Another embodiment of the water purifier with a composite filter element is characterized in that the filtration section further includes a fifth upper cover component, which is stacked on the upper part of the first upper cover component, so that the raw water flows through the raw water flow path and is separated from the first upper cover component. The fifth upper cover component includes a fourth partition, which extends downward in a manner that supports the upper surface of the first upper cover component.

[0114] Another embodiment of the water purifier with a composite filter element is characterized in that the fifth upper cover component includes an upwardly extending fifth upward guide member, which is configured separately from the first upward guide member in order to form the raw water flow path.

[0115] Another embodiment of the water purifier with a composite filter element is characterized in that the fourth partition wall is arranged to extend along the fifth upward guide member in an axial direction.

[0116] Another embodiment of the water purifier with a composite filter element is characterized in that the fifth upper cover component includes a fifth downwardly extending support guide, which extends to the first lower cover component.

[0117] Another embodiment of the water purifier with a composite filter element of the present invention is characterized in that it further includes: a valve section for controlling the flow of the raw water, the first purified water, the externally treated water, the third purified water and the domestic water; and a control section for controlling the operation of the valve section.

[0118] Invention Effects

[0119] According to the above structure, the present invention provides the following effects: In a water purifier with a composite filter element according to one aspect of the present invention, not only can raw water be inlet, second purified water be outlet, externally treated water be inlet, and third purified water be outlet, but domestic water discharge can also be achieved. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using external treatment components. Furthermore, by integrating three internal filter elements, including a spirally wound internal filter element, into a composite filter element, miniaturization and replacement of the water purifier are facilitated, improving user convenience. Moreover, by modularizing each filter element into a first module with a pretreatment internal filter element and a spirally wound internal filter element, and a second module with a post-treatment internal filter element, the composite filter element is constructed by stacking the first and second modules. This improves manufacturability. The discharge pipe component is disposed through the center of the first module, allowing the third purified water generated from the second module disposed below the first module to be discharged to the outside. Therefore, the third purified water and the second purified water will not mix, ensuring the operational stability of the water purifier. Furthermore, the head component of the housing is provided with a first to a fourth partition wall to form independent flow paths for raw water, second purified water, externally treated water, third purified water and domestic water, so that the pipes for the flow of raw water, second purified water, externally treated water, third purified water and domestic water are concentrated in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.

[0120] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, a spirally wound internal filter element component is arranged in a spiral shape in the central tube, and a second purified water through hole is formed in such a way that the second purified water flows into the second purified water flow path arranged inside the central tube. The discharge pipe component inserted through the center of the central tube is arranged at a certain distance from the central tube, thereby stably maintaining the second purified water flow path and improving the reliability of operation by making the second purified water flow smoothly.

[0121] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the fourth partition wall is arranged to extend along the discharge pipe component in the axial direction, thereby effectively preventing the third purified water and the second purified water from mixing, thereby improving the working stability of the water purifier.

[0122] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the third partition wall is arranged to extend along the central tube in the axial direction, thereby effectively preventing the second purified water from mixing with the domestic water, thereby improving the working stability of the water purifier.

[0123] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the discharged domestic water is discharged to the outside through a domestic water flow path formed between the first upward guide and the central pipe. The first upward guide is provided on the first upper cover component, thereby preventing it from mixing with the incoming raw water or the outgoing second purified water, thereby improving the working stability of the water purifier.

[0124] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the second partition wall is arranged to extend along the first upward guide in the axial direction, thereby effectively preventing the incoming raw water from mixing with the discharged domestic water, thereby improving the working stability of the water purifier.

[0125] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the pretreatment internal filter element component can be fixed by arranging a first upper cover component and a first lower cover component on the upper and lower parts of the pretreatment internal filter element component, respectively. Thus, the modularization of the first module is achieved through the component assembly process, thereby improving workability.

[0126] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the internal guide supports the internal surface of the pre-treated internal filter element component, thereby improving structural stability. The first purified water flows smoothly into the interior through the first purified water through hole formed in the internal guide, thereby improving the working stability of the water purifier.

[0127] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the internal guide is configured to connect the first upper cover component and the first lower cover component, thereby improving the structural stability of the first module.

[0128] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the internal guide is disposed separately from the outer surface of the spiral wound internal filter element component, thereby stably forming a first purified water flow path between them, which extends to the lower part of the spiral wound internal filter element component. Therefore, the first purified water that moves into the interior through the first purified water through hole formed in the internal guide is stably moved to the lower part of the spiral wound internal filter element component, thereby improving the working stability of the water purifier.

[0129] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, a second upper cover component is disposed above a first upper cover component, thereby stably forming a raw water flow path and ensuring that the incoming raw water can flow smoothly. Furthermore, a second downward support guide extends to the first lower cover component, thereby preventing the raw water entering the first module from flowing out of the first module and mixing with the incoming external treated water, thus preventing the water quality of the external treated water and the third purified water from deteriorating and improving user satisfaction.

[0130] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, a first support protrusion is provided around the outer peripheral surface of the first upper cover component, protruding outward in a radial direction, so that the first upper cover component supports the inner surface of the second upper cover component, and ensures the flow path of the raw water by allowing the incoming raw water to flow around the first upper cover component. The first support protrusions are arranged at equal intervals, so that the raw water moves uniformly along the circumferential direction of the first upper cover component, thereby improving the reliability of the product by improving the flow of raw water.

[0131] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the incoming raw water flows through the raw water flow path formed between the second upward guide and the first upward guide. The second upward guide is disposed on the second upper cover component, and the first upward guide is disposed on the first upper cover component. Therefore, it will not mix with the incoming external treated water or the discharged domestic water, thereby improving the working stability of the water purifier.

[0132] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the first partition wall is arranged to extend along the second upward guide in the axial direction, thereby effectively preventing the raw water entering the water from mixing with the externally treated water entering the water, thereby improving the working stability of the water purifier.

[0133] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the assembly of the second module can be realized by the third upper cover component and the third lower cover component, thereby improving workability. The discharge pipe component is configured to extend upward from the third lower cover component and penetrate the third upper cover component, thereby stably forming a third purified water flow path during the stacking of the first module and the second module, thereby improving manufacturability.

[0134] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, when the connector body of the connector component is pressed into and fixed inside the first lower cover component, the upward rib extending upward from the connector body is combined with the central tube, and the downward rib extending downward from the connector body is combined with the third upper cover component. Thus, the first module and the second module are easily combined, thereby improving manufacturability.

[0135] The present invention provides the following advantages: In a water purifier with a composite filter element according to an embodiment of the present invention, the third upward guide extends upward along the axial direction, making it easy to connect the connector component and the third upper cover component, thereby improving workability. In particular, if the outer diameter of the third upward guide is formed to be the same as that of the central tube, the upward rib and the downward rib can be formed in a mutually symmetrical shape. Therefore, when the operator uses the connector component to connect the first module and the second module, even if the connector component is flipped to connect them, a stable connection can be achieved, thereby preventing misassembly and improving manufacturability.

[0136] The present invention provides the following effects: In a water purifier with a composite filter element according to an embodiment of the present invention, the flow of raw water, purified water and domestic water can be controlled by the control unit and the backflow of these fluids can be effectively prevented, thereby improving product reliability.

[0137] The present invention provides the following advantages: In a water purifier with a composite filter element according to another aspect of the present invention, not only can raw water be inlet, first purified water outlet, second purified water inlet, and third purified water outlet be achieved, but domestic water discharge can also be achieved. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using an external filter element. Furthermore, by integrating a reverse osmosis filter element or a spirally wound internal filter element component such as a hollow fiber membrane filter element into a composite filter element, user convenience can be improved. A first to fourth partition wall is provided in the head component of the housing to form independent flow paths for raw water, purified water, and domestic water, preventing them from mixing. This concentrates the flow pipes for raw water, purified water, and domestic water in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts. A first upper cover component and a second upper cover component are stacked in the filter section. A first through hole is formed in the first upper cover component, so that the discharged domestic water flows through the domestic water flow path formed between the first upper cover component and the second upper cover component. Furthermore, miniaturization is achieved by reducing the axial height of the composite filter element, and manufacturability is improved by simplifying the structure.

[0138] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, the first purified water flows inside the first upward guide formed on the first upper cover member, and the discharged domestic water flows inside the second upward guide formed on the second upper cover member. The first upper cover member and the second upper cover member are separated from each other by a certain distance in such a way as forming a domestic water flow path. Therefore, an independent flow path can be formed in which the first purified water and domestic water will not mix, and the manufacturability is improved by simplifying the structure.

[0139] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, by means of a first downward guide extending downward from the lower part of the first upper cover component, a spirally wound internal filter element component is stably fixed, thereby improving the durability of the water purifier and allowing domestic water generated by the spirally wound internal filter element component to be discharged through the first through hole, thereby improving the working stability of the water purifier.

[0140] The present invention provides the following advantages: In another embodiment of the water purifier with a composite filter element, a third upper cover component and a fourth upper cover component are stacked. With the post-treatment internal filter element component fixedly disposed at the lower part of the third upper cover component, the second purified water entering from the outside flows through the second purified water flow path formed between the third upper cover component and the fourth upper cover component. Thus, manufacturability is improved by simplifying the structure.

[0141] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, the third purified water flows inside the third upward guide formed on the third upper cover member, and the second purified water flows inside the fourth upward guide formed on the fourth upper cover member. The third upper cover member and the fourth upper cover member are separated from each other by a certain distance in such a way as to form the second purified water flow path. Therefore, an independent flow path in which the second purified water and the third purified water will not mix can be formed, and manufacturability is improved by simplifying the structure.

[0142] The present invention provides the following effect: In another embodiment of the present invention, in a water purifier with a composite filter element, the post-treatment internal filter element component is stably fixed by a third downward guide member that extends downward from the lower part of the third upper cover component, thereby improving the durability of the water purifier.

[0143] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, the fourth downward guide formed by extending downward from the lower part of the fourth upper cover member extends downward in a manner that surrounds the outer peripheral surface of the third upper cover member and extends to the outer peripheral surface of the second upper cover member. Therefore, the post-treatment internal filter element component is stably fixed, thereby improving the durability of the water purifier.

[0144] The present invention provides the following advantages: In another embodiment of the water purifier with a composite filter element, the post-treatment internal filter element component is stably fixed by a lower guide extending upward from the upper surface of the lower cover component. This not only improves the durability of the water purifier, but also allows the post-treatment internal filter element component to be fixed by the third upper cover component, the fourth upper cover component, and the lower cover component. Therefore, the modularity of the composite filter element can be achieved through the component assembly process, thereby improving operability.

[0145] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, a raw water flow path is formed between the main body component and the spiral wound internal filter element component. The spiral wound internal filter element component is separated from the lower surface of the main body component so that the raw water flow path extends to the lower part of the spiral wound internal filter element component. Therefore, after the raw water moves to the lower part of the spiral wound internal filter element component, it can pass through the spiral wound internal filter element component, thereby stably forming a state that distinguishes between first purified water and domestic water, and improving the working stability of the water purifier.

[0146] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided with a central tube on the inner circumferential surface of a spirally wound internal filter element component, so that the spirally wound internal filter element component is wound and arranged in a spiral shape, and a first purified water flow path formed on the inner side of the spirally wound internal filter element component is stably maintained, thereby improving the reliability of operation by allowing the first purified water to flow smoothly.

[0147] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, a first support protrusion protruding outward in the radial direction is provided around the outer peripheral surface of the fourth upper cover component, thereby supporting the inner surface of the main body component and ensuring the raw water flow path by moving the raw water entering the upper part of the housing to the filter part. The first support protrusions are arranged at equal intervals so that the raw water moves uniformly along the circumferential direction of the fourth upper cover component, thereby improving the reliability of the product by improving the raw water flow.

[0148] The present invention provides the following effects: In another embodiment of the water purifier with composite filter element, the flow of raw water, purified water and domestic water can be controlled by the control unit and the valve unit can be controlled, and the backflow of these fluids can be effectively prevented, thereby improving product reliability.

[0149] The present invention provides the following advantages: According to another aspect of the present invention, a water purifier with a composite filter element can not only realize the inlet of raw water, the outlet of first purified water, the inlet of externally treated water, and the outlet of third purified water, but also the discharge of domestic wastewater. Thus, during the flow of raw water through the composite filter element, additional functions can be achieved using the external treatment component. Furthermore, by integrating the spirally wound internal filter element component into a single composite filter element, user convenience is improved. The head component of the housing is provided with first to fourth partition walls to form a system for the inlet of raw water, first purified water, externally treated water, and... The independent flow paths that prevent the mixing of purified water and domestic water allow the pipes carrying raw water, purified water, externally treated water, purified water, and domestic water to be concentrated at the top of the composite filter element. This increases the flexibility of the layout design of other parts. In the filtration section, pretreatment internal filter elements and posttreatment internal filter elements are stacked by the first and second upper cover components. Spiral wound internal filter elements are arranged inside these internal filter elements in the radial direction. This allows the composite filter element to be manufactured using the already manufactured spiral wound internal filter elements, thereby improving manufacturability.

[0150] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, a connecting pipe is provided in the second lower cover component for fixing the post-treatment internal filter element component and the spiral wound internal filter element component. This connecting pipe is formed extending along the axial direction inside the pre-treatment internal filter element component and the post-treatment internal filter element component, thereby preventing the first purified water passing through the pre-treatment internal filter element component and the third purified water passing through the post-treatment internal filter element component from mixing with the incoming externally treated water, thereby improving the working stability of the water purifier.

[0151] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, in which a third upper cover component is disposed below a first upper cover component and is disposed separately from the first upper cover component in such a way as to form a first purified water flow path for the first purified water to flow. As a result, the working stability of the water purifier is improved as the first purified water is stably discharged.

[0152] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element, a first partition formed by extending downward from the lower part of the first upper cover component supports the upper part of the third upper cover component, thereby stably maintaining the separation distance between the first upper cover component and the third upper cover component, thereby improving the structural stability of the composite filter element.

[0153] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, wherein the first upward guide and the third upward guide are arranged separately from each other, thereby extending to form a first purified water flow path, so that the first purified water flows out smoothly, thereby improving the working stability of the water purifier.

[0154] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, wherein the first partition wall extends along the first upward guide in the axial direction, thereby effectively preventing the first purified water to be discharged from mixing with the raw water to be supplied, thereby improving the water quality of the third purified water to be discharged and improving user satisfaction.

[0155] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, wherein the second partition wall extends along the third upward guide in an axial direction, thereby effectively preventing the first purified water from being mixed with the externally treated water entering the water, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final purified water, and improving user satisfaction.

[0156] The present invention provides the following effects: In another embodiment of the present invention, in a water purifier with a composite filter element, a third downward support guide extending downward from the third upper cover component is combined with a connecting pipe, thereby effectively preventing the first purified water from being discharged from the outlet from mixing with the externally treated water entering the outlet, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final discharged third purified water, and improving user satisfaction.

[0157] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, in which a fourth upper cover component is disposed below a third upper cover component and is disposed separately from the third upper cover component in such a way as to form an external treatment water flow path for external treatment water to flow. As a result, the working stability of the water purifier is improved as the external treatment water flows stably.

[0158] The present invention provides the following effect: In another embodiment of the present invention, in a water purifier with a composite filter element, a second partition formed by extending downward from the lower surface of the third upper cover component supports the upper surface of the fourth upper cover component, thereby stably maintaining the separation distance between the third upper cover component and the fourth upper cover component, thereby improving the structural stability of the composite filter element.

[0159] The present invention provides the following effects: In another embodiment of the present invention, in a water purifier with a composite filter element, the fourth upward guide is configured separately from the third upward guide, thereby forming an external treatment water flow path, allowing the incoming external treatment water to flow smoothly, thereby improving the working stability of the water purifier.

[0160] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, wherein the third partition wall extends along the fourth upward guide in the axial direction, thereby effectively preventing the externally treated water entering the water from mixing with the discharged domestic water, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final discharged third purified water, and improving user satisfaction.

[0161] The present invention provides the following effect: In another embodiment of the present invention, in a water purifier with a composite filter element, the spiral wound internal filter element component is supported by a fourth downward support guide, thereby improving the structural stability of the composite filter element.

[0162] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, when the spiral-wound internal filter element component is supported by being spirally wound around the central tube, the second purified water moves through the second purified water through hole into the interior of the central tube, thereby improving structural stability. The central tube is disposed through the second lower cover component, thereby ensuring that the second purified water flows stably to the lower part of the second lower cover component, thus improving the working stability of the water purifier.

[0163] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, the second downward guide supports the lower surface of the housing portion, thereby stably maintaining the separation between the second lower cover member and the lower surface of the housing portion. The second purified water moving to the lower part of the second lower cover member moves smoothly through the third through hole formed in the second downward guide, thereby improving the working stability of the water purifier.

[0164] The present invention provides the following effects: In another embodiment of the water purifier with a composite filter element, the pretreatment internal filter element component can be fixed by respectively arranging a first upper cover component and a first lower cover component on the upper and lower parts of the pretreatment internal filter element component. Thus, the composite filter element can be modularized through the component assembly process, and the workability can be improved. A third partition supporting the upper surface of the second upper cover component is formed on the lower surface of the first lower cover component, thereby stably maintaining the interval between them, allowing the third purified water to flow smoothly, thereby improving the working stability of the water purifier.

[0165] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element, a fifth upper cover component is disposed above a first upper cover component and is separated from the first upper cover component in such a way as to form a raw water flow path for the raw water to flow. As a result, the working stability of the water purifier is improved as the raw water flows stably.

[0166] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is configured separately from the first upward guide element and forms a raw water flow path, so that the incoming raw water flows smoothly, thereby improving the working stability of the water purifier.

[0167] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element is provided, wherein the fourth partition wall extends along the fifth upward guide in the axial direction, thereby effectively preventing the externally treated water entering the water from mixing with the discharged domestic water, thereby preventing the water quality of the externally treated water from deteriorating and improving the water quality of the final discharged third purified water, and improving user satisfaction.

[0168] The present invention provides the following effect: In another embodiment of the present invention, a water purifier with a composite filter element, a fifth downward support guide extends from the first upper cover component to the first lower cover component, thereby preventing the incoming raw water from mixing with the outgoing purified water, thus improving the working stability of the water purifier.

[0169] The present invention provides the following effects: In another embodiment of the present invention, a water purifier with a composite filter element, the flow of raw water, first purified water, externally treated water, third purified water and domestic water can be controlled by the control unit controlling the valve unit, and the backflow of these fluids can be effectively prevented, thereby improving product reliability. Attached Figure Description

[0170] Figure 1 This is a structural diagram illustrating a water purifier with a composite filter element according to an embodiment of the present invention.

[0171] Figure 2 A top view of the head component of a water purifier with a composite filter element according to an embodiment of the present invention.

[0172] Figure 3 This is a cross-sectional view showing the disassembled state of the first and second modules of a water purifier with a composite filter element according to an embodiment of the present invention.

[0173] Figure 4 This is a cross-sectional view showing the assembled state of the first and second modules of a water purifier with a composite filter element according to an embodiment of the present invention.

[0174] Figure 5 This is a cross-sectional view showing the disassembled upper and lower cover components of a water purifier with a composite filter element according to an embodiment of the present invention.

[0175] Figure 6 for Figure 5 A sectional view of part I-I.

[0176] Figure 7 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to an embodiment of the present invention is disposed in the housing.

[0177] Figure 8 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to an embodiment of the present invention.

[0178] Figure 9 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention.

[0179] Figure 10 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention.

[0180] Figure 11 This is a structural diagram illustrating a water purifier with a composite filter element according to another embodiment of the present invention.

[0181] Figure 12 A top view of the head component of a water purifier with a composite filter element according to another embodiment of the present invention.

[0182] Figure 13 This is a cross-sectional view of the filtration section of a water purifier with a composite filter element according to another embodiment of the present invention.

[0183] Figure 14 To show in magnified form Figure 13 A sectional view of part A.

[0184] Figure 15 To show in magnified form Figure 13 Sectional view of part B.

[0185] Figure 16 This is a cross-sectional view showing the disassembled state of the first to fourth upper cover components and the lower cover component of a water purifier with a composite filter element according to another embodiment of the present invention.

[0186] Figure 17 for Figure 16 A sectional view of part I-I.

[0187] Figure 18 for Figure 16 Sectional view of part II-II.

[0188] Figure 19 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to another embodiment of the present invention is disposed in the housing portion.

[0189] Figure 20 This is a structural diagram illustrating a water purifier with a composite filter element according to another embodiment of the present invention.

[0190] Figure 21 A top view of the head component of a water purifier with a composite filter element according to another embodiment of the present invention.

[0191] Figure 22 This is a cross-sectional view showing the assembled state of the filter section of a water purifier with a composite filter element according to another embodiment of the present invention.

[0192] Figure 23 This is a cross-sectional view showing the disassembled upper and lower cover components of a water purifier with a composite filter element according to another embodiment of the present invention.

[0193] Figure 24 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to another embodiment of the present invention is disposed in the housing.

[0194] Figure 25 for Figure 23 A sectional view of part I-I.

[0195] Figure 26 for Figure 23 Sectional view of part II-II.

[0196] Figure 27 for Figure 23 Sectional view of part III-III.

[0197] Figure 28 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention. Detailed Implementation

[0198] The terms and words used in this specification and claims are not limited to their conventional or dictionary meanings, but should be interpreted in accordance with the principle that the inventor may define terms and concepts in order to best describe his invention, and are consistent with the technical ideas of the invention.

[0199] Therefore, the embodiments described in this specification and the structures shown in the accompanying drawings are equivalent to preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention. Thus, the corresponding structures may have various equivalent technical solutions and modifications that can replace them from the time of application of the present invention.

[0200] In this specification, it should be understood that the terms "comprising" or "having," etc., are used to describe the presence of features, figures, steps, actions, structural elements, components, or combinations thereof described in the specification, rather than excluding in advance the presence or additional possibilities of one or more other features or figures, steps, actions, structural elements, components, or combinations thereof.

[0201] When referring to a structural element being located "in front of," "behind," "above," or "below" another structural element, unless there are special circumstances, it includes not only the case where it is positioned in contact with the other structural element to be "in front of," "behind," "above," or "below" the other structural element, but also the case where other structural elements are positioned between them. Furthermore, when referring to a structural element being "connected" to another structural element, unless there are special circumstances, it includes not only the case of a direct connection but also the case of an indirect connection.

[0202] The water purifier with a composite filter element of the present invention will be described below with reference to the accompanying drawings. Figure 1 To illustrate the structure of a water purifier with a composite filter element according to an embodiment of the present invention, Figure 2 To illustrate a top view of the head assembly of a water purifier with a composite filter element according to an embodiment of the present invention, Figure 3 This is a cross-sectional view showing the disassembled state of the first and second modules of a water purifier with a composite filter element according to an embodiment of the present invention. Figure 4 This is a cross-sectional view showing the assembled state of the first and second modules of a water purifier with a composite filter element according to an embodiment of the present invention. Figure 5 This is a cross-sectional view showing the disassembled upper cover and lower cover components of a water purifier with a composite filter element according to an embodiment of the present invention. Figure 6 for Figure 5 Sectional view of part I-I, Figure 7 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to an embodiment of the present invention is disposed in the housing portion. Wherein, 'a' refers to the axial direction of the composite filter element, and 'r' refers to the radial direction of the composite filter element. For clarity of explanation, parts unrelated to the description are omitted in the accompanying drawings.

[0203] like Figures 1 to 4As shown, the water purifier with a composite filter element of the present invention may include: a housing portion 1100, which is provided with a raw water inlet port 1010, a second purified water outlet port 1020, an externally treated water inlet port 1030, a third purified water outlet port 1040, and a domestic water outlet port 1050. The raw water inlet port 1010 is used to allow raw water W1 to enter, the second purified water outlet port 1020 is used to allow filtered second purified water C2 to exit, the externally treated water inlet port 1030 is used to allow externally treated water C2' generated by externally treating the second purified water C2 to enter, the third purified water outlet port 1040 is used to allow filtered third purified water C3 to exit, and the domestic water outlet port 1050 is used to discharge domestic water W2 generated during the filtration process; and a filtration unit 1200, which is provided with The housing 1100 is equipped with a pretreatment internal filter element 1060, a spiral wound internal filter element 1070, an external treatment element 1080, and a posttreatment internal filter element 1090. The pretreatment internal filter element 1060 is disposed inside the housing 1100 to generate first purified water C1 by filtering raw water W1. The spiral wound internal filter element 1070 is disposed inside the housing 1100 to generate second purified water C2 by filtering the first purified water C1. The external treatment element 1080 is disposed outside the housing 1100 to generate externally treated water C2' by treating the second purified water C2. The posttreatment internal filter element 1090 is disposed inside the housing 1100 to generate third purified water C3 by filtering the incoming externally treated water C2'. That is, the raw water W1 entering through the raw water inlet port 1010 flows sequentially through the pretreatment internal filter element 1060 and the spiral wound internal filter element 1070 installed in the filtration section 1200, and then exits to the outside through the second purified water outlet port 1020. After flowing through the external treatment component 1080, it enters again through the external treated water inlet port 1030. After that, it passes through the post-treatment internal filter element 1090 and is filtered. Finally, the filtered third purified water C3 can be provided to the user through the third purified water outlet port 1040. Alternatively, it can be stored in a separate purified water storage section, or it can be supplied to the cold water generation section, hot water generation section, and ice generation section for generating cold water, hot water, and ice. In this case, a raw water flow path PW1 and an external treated water flow path PC2' can be provided inside the housing section 1100 for the flow of raw water W1 entering from the top and external treated water C2'. Furthermore, after the first purified water C1 moves to the lower side of the spiral wound internal filter element 1070, it moves into the interior of the spiral wound internal filter element 1070. The domestic water W2 generated by the first purified water C1 after being filtered by the spiral wound internal filter element 1070 is discharged to the outside of the housing 1100 through the domestic water discharge port 1050, and can be discharged to the outside of the water purifier through a separate pipe.This system not only enables the intake of raw water W1, the output of second purified water C2, the intake of externally treated water C2', and the output of third purified water C3, but also the discharge of domestic wastewater W2. Therefore, during the flow of raw water W1 through the composite filter element, the external treatment component 1080 can perform additional functions, integrating three internal filter elements, including the spirally wound internal filter element component 1070, into a composite filter element. This facilitates the miniaturization and replacement of the water purifier, improving user convenience. In this case, the pretreatment internal filter element component 1060 can be a pre-activated carbon filter element or a microfiltration (MF) filter element, and the post-treatment internal filter element component 1090 can be a post-activated carbon filter element or a microfiltration filter element. Alternatively, the pretreatment internal filter element component 1060 and the post-treatment internal filter element component 1090 may also include filter elements using an electro-ionization method. Electrodeionization methods refer to electrodeionization (EDI), continuous electrodeionization (CEDI), capacitive deionization (CDI), etc. In this case, a separate filter element can be provided on the outer surface of the pretreatment internal filter element 1060. For example, this filter element can be an NT filter element. This NT filter element can be made of an electrostatically charged material, such as a nano-trap material, to adsorb foreign matter contained in the incoming raw water W1. This material can be configured to be positively charged. Thus, negatively charged foreign matter contained in the raw water W1, such as viruses, bacteria, and fine particles, can be electrostatically adsorbed in the NT filter element. Furthermore, this filter element can also be a sediment filter element. The aforementioned spiral-wound internal filter element 1070 can be a reverse osmosis filter element or a hollow fiber membrane filter element. At this time, the external treatment component 1080 can be an additional functional filter cartridge (a deionizer filter cartridge for removing heavy metals) or a pump for increasing the pressure of the second purified water C2. Furthermore, the external treatment component 1080 is not limited to a component that physically / chemically treats the second purified water C2 using other filter cartridges, etc., and may include a temporary tank for temporarily containing the second purified water C2.

[0204] like Figure 2As shown, the aforementioned housing 1100 includes: a head component 1110, which is provided with a first partition wall 1111 to prevent raw water W1 from mixing with external treated water C2', a second partition wall 1112 to prevent raw water W1 from mixing with domestic water W2, a third partition wall 1113 to prevent second purified water C2 from mixing with domestic water W2, and a fourth partition wall 1114 to prevent second purified water C2 from mixing with third purified water C3; and a main body component 1120, which extends from the head component 1110 and has a filter section 1200 disposed inside it. The filtration unit 1200 includes: a first module 1200A, which is sequentially provided with a pretreatment internal filter element 1060 and a spiral wound internal filter element 1070; and a second module 1200B, which is stacked below the first module 1200A and is provided with a posttreatment internal filter element 1090. The second module 1200B may include a discharge pipe component 1210, which is disposed through the center of the first module 1200A to discharge the third purified water C3 to the outside. That is, by modularizing the filter elements in a first module 1200A with a pre-treatment internal filter element component 1060 and a spiral wound internal filter element component 1070 and a second module 1200B with a post-treatment internal filter element component 1090, a composite filter element is formed by stacking the first module 1200A and the second module 1200B, thereby improving manufacturability. The discharge pipe component 1210 with a third purified water flow path PC3 is disposed through the center of the first module 1200A, so that the third purified water C3 generated from the second module 1200B disposed at the lower part of the first module is discharged to the outside. Thus, the third purified water C3 and the second purified water C2 will not mix, and the working stability of the water purifier is ensured. Furthermore, the present invention provides a structure in which the incoming raw water W1, the outgoing second purified water C2, the incoming externally treated water C2', the outgoing third purified water C3, and the discharged domestic water W2 enter the upper part of the composite filter element and exit / discharge from the upper part. For this purpose, the head component 1110 is formed with a raw water region RW1 for receiving the raw water W1, a second purified water region RC2 for emitting the second purified water C2, an externally treated water region RC2' for receiving the externally treated water C2', a third purified water region RC3 for emitting the third purified water C3, and a domestic water region RW2 for discharging the domestic water W2. Therefore, the head component 1110 of the housing 1100 is provided with the aforementioned first partition wall 1111, second partition wall 1112, third partition wall 1113, and fourth partition wall 1114 to form independent flow paths that prevent the raw water W1, second purified water C2, externally treated water C2', third purified water C3, and domestic water W2 from mixing. As a result, the pipes through which the raw water W1, second purified water C2, externally treated water C2', third purified water C3, and domestic water W2 flow are concentrated in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.

[0205] like Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first module 1200A includes a central tube 1071, which supports a spirally wound internal filter element component 1070 wound in a spiral shape and forms a second purified water through hole 1071a, allowing the second purified water C2 to flow into the interior. A discharge pipe component 1210 is disposed through the center of the central tube 1071 and spaced apart at a certain distance, so that a second purified water flow path PC2 for allowing the second purified water C2 to flow is formed between the central tube 1071 and the discharge pipe component 1210. A spirally wound internal filter element component 1070 is spirally wound in the central tube 1071, and a second purified water through hole 1071a is formed therein, so that the second purified water C2 flows to the second purified water flow path PC2 set inside. The discharge pipe component 1210, which is inserted through the center of the central tube 1071, is arranged at a certain distance from the central tube 1071, thereby stably maintaining the second purified water flow path PC2, and ensuring the reliability of operation through the smooth flow of the second purified water C2. To ensure the structural stability of the spiral-wound internal filter element 1070, the central tube 1071 supports the inner surface of the spiral-wound internal filter element 1070. As mentioned earlier, when the spiral-wound internal filter element 1070 is constructed by winding around the central tube 1071, it can be integrally formed with the central tube 1070, but it is not limited to this. Alternatively, the spiral-wound internal filter element 1070 can be wound around the central tube 1071 while being integrally formed with the upward rib 1282 of the connector element 1280 (described later). In this case, a separate O-ring can be provided between the central tube 1071 and the upward rib 1282 of the connector element 1280, thereby preventing the second purified water C2 from flowing into the third purified water flow path PC3.

[0206] In addition, such as Figure 4 and Figure 7 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the fourth partition wall 1114 can be arranged to extend along the discharge pipe component 1210 in the axial direction a. In this case, the fourth partition wall 1114 is formed to extend along the discharge pipe component 1210 in the axial direction a. When the head component 1110 and the main body component 1120 are combined, they can be combined in a manner where the fourth partition wall 1114 covers the outer surface of the discharge pipe component 1210, or in a manner where the fourth partition wall 1114 is inserted into the inner surface of the discharge pipe component 1210, or in a manner where the fourth partition wall 1114 is placed at the upper end of the discharge pipe component 1210. As described above, the fourth partition wall 1114 is arranged to extend along the discharge pipe component 1210 in the axial direction a, thereby effectively preventing the third purified water C3 from mixing with the second purified water C2, thereby improving the operational stability of the water purifier.

[0207] In addition, such as Figure 4 and Figure 7 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the third partition wall 1113 can be arranged to extend along the central tube 1071 in the axial direction a. In this case, the third partition wall 1113 is formed to extend along the central tube 1071 in the axial direction a. When the head component 1110 and the main body component 1120 are combined, they can be combined in a manner where the third partition wall 1113 covers the outer surface of the central tube 1071, or in a manner where the third partition wall 1113 is inserted into the inner surface of the central tube 1071, or in a manner where the third partition wall 1113 is placed at the upper end of the central tube 1071. As described above, the third partition wall 1113 is arranged to extend along the central tube 1071 in the axial direction a, thereby effectively preventing the second purified water C2 from mixing with the discharged domestic water W2, thereby improving the operational stability of the water purifier.

[0208] like Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first module 1200A includes a first upper cover component 1220, on which a pretreatment internal filter element component 1060 is disposed on the outer side in the radial direction r, and a spirally wound internal filter element component 1070 is disposed on the inner side in the radial direction r. The first upper cover component 1220 may include a first upward guide 1221, which is disposed at a certain distance from the central tube 1071 to form a domestic water flow path PW2 for flowing the discharged domestic water W2. This first upward guide 1221 extends upward along the axial direction a in a manner balanced with the central tube 1071, thereby guiding the discharged domestic water W2. That is, the discharged domestic water W2 is discharged to the outside through the domestic water flow path PW2 formed between the first upward guide 1221 and the central pipe 1071. The first upward guide 1221 is disposed on the first upper cover component 1220, thereby preventing it from mixing with the incoming raw water W1 or the outgoing second purified water C2, thus improving the working stability of the water purifier. The first upper cover component 1220 may be formed with a first downward support guide 1222, which may include: a first-1 downward support guide 1222a, which is disposed on the outer side in the radial direction to fix the pretreatment internal filter element component 1060; and a first-2 downward support guide 1222b, which is disposed on the inner side in the radial direction r to fix the spiral wound type internal filter element component 1070. The first and second downward support guides 1222b stably support the spirally wound internal filter element 1070, and the spirally wound internal filter element 1070 may be provided with a separate sealing element supported by the first and second downward support guides 1222b. As described above, if the first downward support guide 1222 is formed, the pretreatment internal filter element 1060 and the spirally wound internal filter element 1070 are stably fixed, thereby improving the durability of the water purifier.

[0209] In addition, such as Figure 4 and Figure 7As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the second partition wall 1112 can be extended along the first upward guide 1221 in the axial direction a. In this case, the second partition wall 1112 extends along the first upward guide 1221 in the axial direction a. When the head component 1110 and the main body component 1120 are combined, they can be combined in a manner where the second partition wall 1112 covers the outer surface of the first upward guide 1221, or in a manner where the second partition wall 1112 is inserted into the inner surface of the first upward guide 1221, or in a manner where the second partition wall 1112 is placed at the upper end of the first upward guide 1221. That is, the second partition wall 1112 extends along the first upward guide 1221 in the axial direction a, thereby effectively preventing the incoming raw water W1 from mixing with the discharged domestic water W2, thus improving the working stability of the water purifier.

[0210] like Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first module 1200A may further include a first lower cover component 1230, which has a pretreatment internal filter element component 1060 fixedly disposed thereon. The pretreatment internal filter element component 1060 can be fixed by distributing the first upper cover component 1220 and the first lower cover component 1230 at the upper and lower parts of the pretreatment internal filter element component 1060 respectively. This allows for modularity of the first module 1200A through a component assembly process, thereby improving workability. The first lower cover component 1230 may have a first upward support guide 1231 formed thereon. The first upward support guide 1231 may include: a first-1 upward support guide 1231a, disposed on the outer side in the radial direction r; and a first-2 upward support guide 1231b, disposed on the inner side in the radial direction r. This fixes the outer and inner surfaces of the pretreatment internal filter element component 1060. As described above, if the first upward support guide 1231 is formed, the pretreatment internal filter element component 1060 is stably fixed, thereby improving the durability of the water purifier. Furthermore, the first lower cover component 1230 may be provided with a first downward guide 1232, which extends downward along the axial direction a in such a way that the first downward guide 1232 supports the upper surface of the second module 1200B, thereby improving the structural stability of the composite filter element.

[0211] In addition, such as Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first module 1200A may further include an internal guide 1240, which supports the inner surface of the pretreatment internal filter element component 1060 and has a first purified water through hole 1240a formed to allow the first purified water C1 to flow into the interior. That is, the internal guide 1240 supports the inner surface of the pretreatment internal filter element component 1060, thereby improving structural stability, and the first purified water C1 flows smoothly into the interior through the first purified water through hole 1240a formed in the internal guide 1240, thereby improving the working stability of the water purifier.

[0212] At this time, as Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the internal guide 1240 is configured to connect the first upper cover component 1220 and the first lower cover component 1230. As described above, if the internal guide 1240 is configured to connect the first upper cover component 1220 and the first lower cover component 1230, the structural stability of the first module 1200A is improved. This internal guide 1240 is manufactured independently of the pretreatment internal filter element component 1060 and can be configured to support the inner surface of the pretreatment internal filter element component 1060 during the assembly of the first module 1200A. However, it is not limited to this. The internal guide 1240 can also be integrally formed with the pretreatment internal filter element component 1060, or, in the state of being integrally formed with the first upper cover component 1220 and the first lower cover component 1230, the pretreatment internal filter element component 1060 can also be disposed on the outer side in the radial direction r.

[0213] In addition, such as Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the internal guide 1240 is spaced apart from the outer surface of the spirally wound internal filter element component 1070, so that the first purified water flow path PC1 for the flow of the first purified water C1 extends to the lower part of the spirally wound internal filter element component 1070. That is, the internal guide 1240 is spaced apart from the outer surface of the spirally wound internal filter element component 1070, thereby stably forming the first purified water flow path PC1 for the flow of the first purified water C1 therebetween. This first purified water flow path PC1 extends to the lower part of the spirally wound internal filter element component 1070, so that the first purified water C1 that moves into the interior through the first purified water through hole 1240a formed in the internal guide 1240 stably moves to the lower part of the spirally wound internal filter element component 1070, thereby improving the working stability of the water purifier.

[0214] In addition, such as Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first module 1200A further includes a second upper cover component 1250, which is stacked on top of the first upper cover component 1220 and is separated from the first upper cover component 1220 in order to form the original water flow path PW1. The second upper cover component 1250 may also include components extending to the first lower cover component 1230. That is, the second upper cover component 1250 is spaced apart from the upper part of the first upper cover component 1220, thereby stably forming the raw water flow path PW1 and ensuring the smooth flow of the incoming raw water W1. The second downward support guide 1252 extends to the first lower cover component 1230 to prevent the raw water W1 entering the interior of the first module 1200A from flowing out of the first module 1200A and mixing with the incoming external treated water C2'. This prevents the water quality of the external treated water C2' and the third purified water C3 from deteriorating and improves user satisfaction. Furthermore, the second upper cover component 1250 can be spaced apart from the inner surface of the housing portion 1100 in order to form the external treated water flow path PC2'.

[0215] At this time, as Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first upper cover component 1220 includes at least two first support protrusions 1220a protruding outward in a radial direction r around its outer peripheral surface. The first support protrusions 1220a are arranged at equal intervals. That is, the first support protrusions 1220a protruding outward in a radial direction r are provided around the outer peripheral surface of the first upper cover component 1220, so that the first upper cover component 1220 supports the inner surface of the second upper cover component 1250. Thus, the raw water W1 is ensured to flow through the periphery of the first upper cover component 1220, and the equal intervals of the first support protrusions 1220a ensure that the raw water W1 moves uniformly along the periphery of the first upper cover component 1220, thereby improving product reliability by improving the flow of the raw water W1. Additionally, an O-ring OR may be provided around the outer peripheral surface of the first lower cover component 1230 to prevent the incoming raw water W1 from flowing out.

[0216] In addition, such as Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the second upper cover component 1250 may include a second upward guide 1251, which is disposed at a certain distance from the first upward guide 1221 to form a raw water flow path PW1 for allowing the incoming raw water W1 to flow. That is, the incoming raw water W1 flows through the raw water flow path PW1 formed between the second upward guide 1251 and the first upward guide 1221. The second upward guide 1251 is disposed on the second upper cover component 1250, and the first upward guide 1221 is disposed on the first upper cover component 1220. Thus, it will not mix with the incoming external treated water C2' or the discharged domestic water W2, thereby improving the working stability of the water purifier.

[0217] At this time, as Figure 4 and Figure 7 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the first partition wall 1111 can be extended along the second upward guide 1251 in the axial direction a. In this case, the first partition wall 1111 is formed by extending along the second upward guide 1251 in the axial direction a. When the head component 1110 and the main body component 1120 are combined, they can be combined in a manner where the first partition wall 1111 covers the outer surface of the second upward guide 1251, or in a manner where the first partition wall 1111 is inserted into the inner surface of the second upward guide 1251, or in a manner where the first partition wall 1111 is placed at the upper end of the second upward guide 1251. That is, the first partition wall 1111 is arranged to extend along the second upward guide 1251 in the axial direction a, thereby preventing the incoming raw water W1 from mixing with the incoming externally treated water C2', thus improving the working stability of the water purifier.

[0218] In addition, such as Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the second module 1200B includes a third upper cover component 1260 and a third lower cover component 1270 fixedly configured with the post-treatment internal filter element component 1090. A discharge pipe component 1210 extends upward from the third lower cover component 1270 and is configured to penetrate the third upper cover component 1260. A third purified water through-hole 1210a can be formed in this discharge pipe component 1210, allowing the third purified water C3 passing through the post-treatment internal filter element component 1090 to flow inward. That is, the components of the second module 1200B can be assembled through the third upper cover component 1260 and the third lower cover component 1270, thereby improving workability. The discharge pipe component 1210 extends upward from the third lower cover component 1270 and is configured to pass through the third upper cover component 1260. Thus, during the stacking of the first module 1200A and the second module 1200B, the third purified water flow path PC3 is stably formed, improving manufacturability. At this time, a third downward support guide 1262 extending downward along the axial direction a can be formed in the third upper cover component 1260. The third downward support guide 1262 may include: a third-1 downward support guide 1262a, which is used to fix the outer side of the post-treatment internal filter element component 1090 in the radial direction r; and a third-2 downward support guide 1262b, which is used to fix the inner side of the post-treatment internal filter element component 1090 in the radial direction r. Furthermore, a third upward support guide 1271 extending upward along the axial direction a may be formed in the third lower cover member 1270. The third upward support guide 1271 may include: a third-1 upward support guide 1271a, which is used to fix the outer side of the post-treatment internal filter element member 1090 in the radial direction r; and a third-2 upward support guide 1271b, which is used to fix the inner side of the post-treatment internal filter element member 1090 in the radial direction r. That is, the post-treatment internal filter element member 1090 is stably fixed by the third upward support guide 1271 and the third downward support guide 1262, thereby improving the durability of the water purifier.

[0219] At the same time, such as Figure 3 and Figure 4As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, a connector component 1280 is provided for combining a first module 1200A with a second module 1200B. The connector component 1280 may include: a connector body 1281, which is pressed and fixed inside a first lower cover component 1230; an upward rib 1282, which extends upward from the connector body 1281 in a manner that combines with a central tube 1071; and a downward rib 1283, which extends downward from the connector body 1281 in a manner that combines with a third upper cover component 1260. Basically, with the connector body 1281 of the connector component 1280 pressed into and fixed inside the first lower cover component 1230, the upward rib 1282 extending upward from the connector body 1281 engages with the central tube 1071, and the downward rib 1283 extending downward from the connector body 1281 engages with the third upper cover component 1260. This allows for easy assembly of the first module 1200A and the second module 1200B, thereby improving manufacturability. At this time, O-rings OR can be provided on the outer peripheral surface of the connector body 1281, the inner peripheral surface of the upward rib 1282, and the inner peripheral surface of the downward rib 1283 of the connector component 1280 to prevent leakage of the first purified water C1 and the third purified water C3.

[0220] At this time, as Figure 3 and Figure 4 As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the third upper cover component 1260 includes a third upward guide 1261, which extends upward along the axial direction a in a manner that engages with the inner surface of the downward rib 1283. The third upward guide 1261 can be configured to have the same outer diameter as the central tube 1071. That is, the third upward guide 1261 is formed by extending upward along the axial direction a, so that the connector component 1280 can be easily engaged with the third upper cover component 1260, thereby improving workability. In particular, if the outer diameter of the third upward guide 1261 is the same as that of the central tube 1071, the upward rib 1282 and the downward rib 1283 can be formed in a mutually symmetrical shape. Thus, even if the connector component 1280 is flipped to engage during the process of the operator engaging the first module 1200A and the second module 1200B using the connector component 1280, a stable engagement can be achieved, thereby preventing misassembly and improving manufacturability.

[0221] Figure 8 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to an embodiment of the present invention.

[0222] like Figure 8As shown, in a water purifier with a composite filter element according to an embodiment of the present invention, the water purifier with a composite filter element of the present invention may further include: a valve section 1300 for controlling the flow of raw water W1, second purified water C2, externally treated water C2', third purified water C3, and domestic water W2; and a control section 1400 for controlling the operation of the valve section 1300. This valve section 1300 may include: a first valve 1310 for controlling the flow of raw water W1; a second valve 1320 for controlling the flow of second purified water C2; a third valve 1330 for controlling the flow of externally treated water C2'; a fourth valve 1340 for controlling the flow of third purified water C3; and a fifth valve 1350 for controlling the flow of domestic water W2. At this time, the incoming raw water W1 moves to a state of reduced pressure through the pressure reducing valve 1011. That is, the flow of raw water W1, second purified water C2, external treated water C2', third purified water C3 and domestic water W2 can be controlled by the control unit 1400, and the backflow of these fluids can be effectively prevented, thereby ensuring product reliability.

[0223] As mentioned above, the water purifier with composite filter element of the present invention can not only realize the inlet of raw water W1, the outlet of second purified water C2, the inlet of externally treated water C2', and the outlet of third purified water C3, but also realize the discharge of domestic water W2. Thus, during the process of raw water W1 flowing through the composite filter element, the external treatment component 1080 can realize additional functions. Furthermore, by integrating three internal filter elements, including the spiral wound internal filter element component 1070, to form a composite filter element, it is easy to miniaturize and replace the water purifier, thereby improving the convenience for users. Furthermore, by providing a first module 1200A with a pre-treatment internal filter element component 1060 and a spiral-wound internal filter element component 1070, and a second module 1200B with a post-treatment internal filter element component 1090, the filter elements are modularized and a composite filter element is formed by stacking the first module 1200A and the second module 1200B. This improves manufacturability. The discharge pipe component 1210 is disposed through the center of the first module 1200A, so that the third purified water C3 generated from the second module 1200B disposed at the lower part of the first module 1200A is discharged to the outside. Thus, the third purified water C3 and the second purified water C2 will not mix, and the working stability of the water purifier can be ensured. Furthermore, a first partition wall 1111, a second partition wall 1112, a third partition wall 1113, and a fourth partition wall 1114 are provided in the head component 1110 of the housing 1100 to form independent flow paths for raw water W1, second purified water C2, externally treated water C2', third purified water C3, and domestic water W2, so that the pipes through which raw water W1, second purified water C2, externally treated water C2', third purified water C3, and domestic water W2 flow are concentrated in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.

[0224] Figure 9 To illustrate the structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 10 To illustrate the structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 11 To illustrate the structure of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 12 To illustrate a top view of the head assembly of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 13 To illustrate a cross-sectional view of the filtration section of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 14 To show in magnified form Figure 13 Sectional view of part A, Figure 15 To show in magnified form Figure 13 Sectional view of part B.

[0225] like Figure 9As shown, in another embodiment of the water purifier with a composite filter element, the incoming raw water W1 moves to a state of reduced pressure via a pressure reducing valve 2011. At this time, the incoming raw water W1 can be configured to flow through an additional pretreatment filter element 2090, such as a sludge filter element or an activated carbon filter element, and be filtered. The incoming raw water W1 moves to a spiral wound type internal filter element component 2060. At this time, the spiral wound type internal filter element component 2060 can be a spiral wound type reverse osmosis filter element. The first purified water C1 flowing through the spiral wound type internal filter element component 2060 and being filtered can be reverse osmosis treated water. This first purified water C1 flows to the outside and then moves to an external filter element 70. The external filter element 70 can be a mineral filter element. That is, the first purified water C1, such as reverse osmosis treated water, is in a state where all ions have been removed, but through a functional filter element such as a mineral filter element, the second purified water C2 can contain sufficient minerals. That is, during the process of raw water W1 flowing through the composite filter element, even if ions are removed by the reverse osmosis filter element, the additional function of adding minerals can be achieved by using an external filter element 70, such as a mineral filter element. The second purified water C2 moves to the post-treatment internal filter element component 2080. The post-treatment internal filter element component 2080 can be an activated carbon filter element. At this time, the external filter element 70 can be replaced by an additional water purification tank. That is, the first purified water C1, which is discharged to the outside, is stored in the water purification tank. During the process of providing drinking water to users, the first purified water C1 stored in the water purification tank is discharged while flowing through the post-treatment internal filter element component 2080, such as an activated carbon filter element, thereby improving water quality and increasing user satisfaction. At this time, the aforementioned external filter element 70 and water purification tank can also be configured. Furthermore, the domestic water W2 generated during the process of raw water W1 flowing through the spiral wound internal filter element component 2060 is discharged to the outside. The valve section 2300 described later may be equipped with: a first valve 2310 for controlling the flow of raw water W1; a second valve 2320 for controlling the flow of first purified water C1; a third valve 2330 for controlling the flow of second purified water C2; a fourth valve 2340 for controlling the flow of third purified water C3; and a fifth valve 2350 for controlling the flow of domestic water W2.

[0226] Or, such as Figure 10As shown, in another embodiment of the water purifier with a composite filter element of the present invention, the incoming raw water W1 passes through the pressure reducing valve 2011 and moves to a state of reduced pressure. The raw water W1, moving in the manner described above, moves to the spiral wound internal filter element component 2060. At this time, the spiral wound internal filter element component 2060 can be a spiral wound hollow fiber membrane filter element that functions as a pretreatment filter element. The first purified water C1 that flows through the spiral wound internal filter element component 2060 and is filtered can be UF treated water. This first purified water C1 moves to the external filter element 70 after being discharged to the outside. The external filter element 70 can be a reverse osmosis filter element that functions as a main filter element. That is, the first purified water C1, such as UF treated water, flows through the main filter element, such as a reverse osmosis filter element, so that the user can safely drink the second purified water C2. That is, the raw water W1 is pretreated by a hollow fiber membrane filter while flowing through the composite filter element, and then flows through an external filter element 70 such as a reverse osmosis filter element, thereby achieving the additional function of making the water safe for users to drink. The second purified water C2 moves to the post-treatment internal filter element component 2080. The post-treatment internal filter element component 2080 can be an activated carbon filter element. The second purified water C2 is discharged while flowing through the post-treatment internal filter element component 2080 such as an activated carbon filter element, thereby improving water quality and increasing user satisfaction. Furthermore, the domestic water W2 generated during the flow of raw water W1 through the spiral wound internal filter element component 2060 can be UF domestic water. This UF domestic water, after being processed by an additional sterilization module 2051 configured externally, can be used as sterilization water to sterilize the external filter element 70 such as a reverse osmosis filter element and the water pipes connected to it. This sterilization module 2051 can also be a UV sterilization filter element or an additional sterilization method. At this time, it can also be configured to simply discharge the UF domestic water to the outside. The valve section 2300 described later may be equipped with: a first valve 2310 for controlling the flow of raw water W1; a second valve 2320 for controlling the flow of first purified water C1; a third valve 2330 for controlling the flow of second purified water C2; a fourth valve 2340 for controlling the flow of third purified water C3; and a fifth valve 2350 for controlling the flow of domestic water W2.

[0227] like Figures 11 to 15As shown, the water purifier with a composite filter element according to an embodiment of the present invention may include: a housing portion 2100, which is provided with a raw water inlet port 2010, a first purified water outlet port 2020, a second purified water inlet port 2030, a third purified water outlet port 2040, and a domestic water discharge port 2050. The raw water inlet port 2010 is used to allow raw water W1 to enter, the first purified water outlet port 2020 is used to allow filtered first purified water C1 to exit, the second purified water inlet port 2030 is used to allow second purified water C2 filtered externally to enter, the third purified water outlet port 2040 is used to allow filtered third purified water C3 to exit, and the domestic water discharge port 2050 is provided with a composite filter element. For discharging domestic water generated during the filtration process; and a filtration unit 2200, which is provided with a spiral wound internal filter element 2060, an external filter element 2070 and a post-treatment internal filter element 2080. The spiral wound internal filter element 2060 is disposed inside the housing part 2100 in such a way as to generate first purified water C1 by filtering raw water W1. The external filter element 2070 is disposed outside the housing part 2100 in such a way as to generate second purified water C2 by filtering first purified water C1. The post-treatment internal filter element 2080 is disposed inside the housing part 2100 in such a way as to generate third purified water C3 by filtering second purified water C2.

[0228] As described above, raw water W1 entering through the raw water inlet port 2010 sequentially passes through the spiral-wound internal filter element 2060, the external filter element 2070, and the post-treatment internal filter element 2080 installed in the filter section 2200 and is filtered. The final filtered third purified water C3 can be provided to the user through the third purified water outlet port 2040. Alternatively, it can be stored in a separate purified water storage section, or it can be supplied to the cold water generation section, hot water generation section, and ice generation section for generating cold water, hot water, and ice. Furthermore, the domestic water W2 generated in the spiral-wound internal filter element 2060 is discharged to the outside of the housing section 2100 through the domestic water discharge port 2050, and can also be discharged to the outside of the water purifier through an additional pipe. As described above, this system not only enables the inflow of raw water W1, the outflow of first purified water C1, the inflow of second purified water C2, and the outflow of third purified water C3, but also the discharge of domestic wastewater W2. Therefore, during the flow of raw water W1 through the composite filter element, the external filter element component 2070 can provide additional functions. Furthermore, the composite filter element can be constructed by integrating a spirally wound internal filter element component 2060, such as a reverse osmosis filter element or a hollow fiber membrane filter element. The external filter element component 2070 can include an electro-deionization filter element. Electro-deionization refers to methods such as electro-deionization (EDI), continuous electro-deionization (CEDI), and capacitive deionization (CDI).

[0229] The aforementioned housing portion 2100 may include: a head component 2110, which is provided with a first partition wall 2111 to prevent the raw water W1 from mixing with the second purified water C2, a second partition wall 2112 to prevent the second purified water C2 from mixing with the third purified water C3, a third partition wall 2113 to prevent the third purified water C3 from mixing with domestic water W2, and a fourth partition wall 2114 to prevent domestic water W2 from mixing with the first purified water C1; and a main body component 2120, which extends from the head component 2110 and has a filter portion 2200 disposed therein. The aforementioned first partition wall 2111, second partition wall 2112, third partition wall 2113, and fourth partition wall 2114 are formed sequentially along the inner side of the radial direction r. The filter unit 2200 may include: a first upper cover member 2210, which has a spiral wound type internal filter element member 2060 fixedly disposed at its lower part; and a second upper cover member 2220, which is disposed at a certain distance from the upper surface of the first upper cover member 2210, so as to provide a domestic water flow path PW 2 for allowing domestic water W2 discharged from the spiral wound type internal filter element member 2060 to flow. That is, the present invention provides a structure in which the incoming raw water W1, the outgoing first purified water C1, the incoming second purified water C2, the outgoing third purified water C3, and the discharged domestic water W2 enter the upper part of the composite filter element and exit / discharge from the upper part. For this purpose, the head component 2110 can be formed with raw water region RW1, first purified water region RC1, second purified water region RC2, third purified water region RC3, and domestic water region RW2 for the incoming raw water W1, the outgoing first purified water C1, the outgoing second purified water C2, the outgoing third purified water C3, and the discharged domestic water W2 to flow respectively. The first upper cover component 2210 and the second upper cover component 2220 are stacked on top of each other. The second upper cover component 2220 is spaced apart from the first upper cover component 2210 at a certain distance so that a domestic water flow path PW2 is formed between the first upper cover component 2210 and the second upper cover component 2220 so that domestic water W2 discharged from the spiral wound internal filter element component 2060 flows. For this purpose, a partition 2220a extending downward may be provided on the lower surface of the second upper cover component 2220. As described above, the first partition wall 2111, the second partition wall 2112, the third partition wall 2113, and the fourth partition wall 2114 are sequentially formed on the inner side of the head component 2110 along the radial direction r, so as to form an independent flow path that prevents the raw water W1, the first purified water C1, the second purified water C2, the third purified water C3, and the domestic water W2 from mixing. As a result, the pipes 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 in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.Furthermore, the first upper cover component 2210 and the second upper cover component 2220 are stacked together. The first upper cover component 2210 forms a first through hole 2210a for connecting the interior of the spiral wound internal filter element component 2060 with the domestic water flow path PW2, so that the domestic water W2 discharged from the spiral wound internal filter element component 2060 disposed at the lower part of the first upper cover component 2210 flows to the domestic water flow path PW2. This reduces the height of the composite filter element in the axial direction, thereby enabling miniaturization, simplifying the structure, and improving manufacturability.

[0230] Figure 16 This is a cross-sectional view showing the disassembled state of the first to fourth upper cover components and the lower cover component of a water purifier with a composite filter element according to another embodiment of the present invention. Figure 17 for Figure 16 Sectional view of part I-I, Figure 18 for Figure 16 Sectional view of part II-II.

[0231] like Figure 13 and Figure 14 As shown, in another embodiment of the water purifier with a composite filter element of the present invention, the first upper cover component 2210 includes a first upward guide 2211, which extends upward in a manner that allows the first purified water C1 to flow, and the second upper cover component 2220 includes a second upward guide 2221, which extends upward in a manner that allows domestic water W2 to flow. The first upward guide 2211 and the second upward guide 2221 can be arranged apart from each other at a certain distance so as to extend to form a domestic water flow path PW2. That is, the first purified water C1 flows inside the first upward guide 2211 formed on the first upper cover member 2210, and the discharged domestic water W2 flows inside the second upward guide 2221 formed on the second upper cover member 2220. The first upper cover member 2210 and the second upper cover member 2220 are separated from each other by a certain distance to form a domestic water flow path PW2. This creates an independent flow path that prevents the first purified water C1 and domestic water W2 from mixing, thereby simplifying the structure and improving manufacturability. At this time, as... Figure 16 and Figure 17 As shown, the partition 2220a extending downward from the lower part of the second upper cover component 2220 can be extended along the circumferential direction and formed integrally to prevent the discharged domestic water W2 from flowing back and mixing with the raw water W1.

[0232] In addition, such as Figure 13 and Figure 14As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, the first upper cover component 2210 may include a first downward guide 2212, which extends downward in a manner that fixes the spirally wound internal filter element component 2060. That is, the durability of the water purifier is improved by stably fixing the spirally wound internal filter element component 2060 by the first downward guide 2212. The first downward guide 2212 is formed by extending downward from the lower surface of the first upper cover component 2210. The domestic water W2 generated by the spirally wound internal filter element component 2060 is discharged from the first through hole 2210a, thereby improving the working stability of the water purifier. At this time, a second downward guide 2222 may also be formed in the second upper cover component 2220, extending downward in a manner that surrounds the outer peripheral surface of the first upper cover component 2210, thereby allowing the first upper cover component 2210 and the second upper cover component 2220 to be stably combined. An O-ring OR can be provided between the first downward guide 2212 and the second downward guide 2222 to prevent the discharged domestic water W2 from flowing back into the raw water flow path PW1.

[0233] like Figure 13 and Figure 15 As shown, in another embodiment of the water purifier with a composite filter element, the filtration unit 2200 may include: a third upper cover member 2230, which is stacked in such a way that the post-treatment internal filter element member 2080 is fixedly disposed on the upper part of the second upper cover member 2220; and a fourth upper cover member 2240, which is disposed at a certain distance from the upper surface of the third upper cover member 2230 to provide a second purified water flow path PC2 for allowing the second purified water C2 entering from the outside to flow. That is, by stacking the third upper cover member 2230 and the fourth upper cover member 2240, with the post-treatment internal filter element member 2080 fixedly disposed on the lower part of the third upper cover member 2230, the second purified water C2 entering from the outside flows to the second purified water flow path PC2 formed between the third upper cover member 2230 and the fourth upper cover member 2240, thereby simplifying the structure and improving manufacturability.

[0234] At this time, as Figure 13 and Figure 15As shown, in the water purifier with composite filter element of the present invention, the third upper cover component 2230 includes a third upward guide 2231, which extends upward in a manner that allows the third purified water C3 to flow, and the fourth upper cover component 2240 includes a fourth upward guide 2241, which extends upward in a manner that allows the second purified water C2 to flow. The third upward guide 2231 and the fourth upward guide 2241 can be separated from each other by a certain distance so as to extend to form the second purified water flow path PC 2. That is, the discharged third purified water C3 flows inside the third upward guide 2231 formed on the third upper cover member 2230, and the incoming second purified water C2 flows inside the fourth upward guide 2241 formed on the fourth upper cover member 2240. The third upper cover member 2230 and the fourth upper cover member 2240 are separated from each other by a certain distance to form a second purified water flow path PC2. Thus, an independent flow path is formed so that the second purified water C2 and the third purified water C3 will not mix, and manufacturability can be improved by simplifying the structure. Furthermore, the second upward guide 2221 and the third upward guide 2231 can also be arranged separated from each other by a certain distance to form a third purified water flow path PC3 in the middle for the discharge of the third purified water C3. Thus, the third purified water C3 can be discharged stably, and the discharged third purified water C3 can be prevented from mixing with the discharged domestic water W2.

[0235] In addition, such as Figure 13 and Figure 15 As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, the third upper cover component 2230 may include a third downward guide 2232, which extends downward to fix the post-treatment internal filter element component 2080. This third downward guide 2232 may include: a third-first downward guide 2232a, which is disposed on the outer side in the radial direction r to fix the outer side of the post-treatment internal filter element component 2080; and a third-second downward guide 2232b, which is disposed on the inner side in the radial direction r to fix the inner side of the post-treatment internal filter element component 2080. That is, the durability of the water purifier is improved by stably fixing the post-treatment internal filter element component 2080 by the third downward guide 2232, which is formed by extending downward from the lower surface of the third upper cover component 2230.

[0236] And, as Figure 13 and Figure 15As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, the fourth upper cover component 2240 includes a fourth downward guide 2242, which extends downward in a manner surrounding the outer peripheral surface of the third upper cover component 2230. The fourth downward guide 2242 can extend to the outer peripheral surface of the second upper cover component 2220. That is, the fourth downward guide 2242, formed by extending downward from the lower surface of the fourth upper cover component 2240, extends downward in a manner surrounding the outer peripheral surface of the third upper cover component 2230 and is configured to extend to the outer peripheral surface of the second upper cover component 2220. This stably fixes the post-treatment internal filter element component 2080 and improves the durability of the water purifier.

[0237] At this time, as Figure 13 and Figure 14 As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, the filtration unit 2200 may further include a lower cover member 2250, which is provided with an upwardly extending lower guide member 2251 for fixing the post-treatment internal filter element member 2080 at the upper part. An auxiliary lower guide member 2252 may be provided on the inner side of this lower cover member 2250 in the radial direction r. The auxiliary lower guide member 2252 may be formed with a first portion for supporting the inner side of the post-treatment internal filter element member 2080 and a second portion spaced apart from the inner side of the post-treatment internal filter element member 2080 facing the inner side in the radial direction r. This auxiliary lower guide member 2252 can have a height difference structure in the manner of forming the first portion and the second portion. Third purified water C3 flows through the space between the second portion and the post-treatment internal filter element member 2080. That is, the durability of the water purifier can be improved by stably fixing the post-treatment internal filter element component 2080 by the lower guide member 2251, which extends upward from the upper surface of the lower cover component 2250. Furthermore, the post-treatment internal filter element component 2080 can be fixed by the third upper cover component 2230, the fourth upper cover component 2240, and the lower cover component 2250, thereby enabling modularization of the composite filter element through the component assembly process, thus improving operability. At this time, an O-ring OR can be provided between the fourth downward guide member 2242 and the lower guide member 2251 to prevent the incoming second purified water C2 from flowing back into the raw water flow path PW1.

[0238] Figure 19 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to another embodiment of the present invention is disposed in the housing portion.

[0239] like Figure 19As shown, in the water purifier with composite filter element of the present invention, a raw water flow path PW1 for allowing raw water W1 to flow is provided between the inner peripheral surface of the main body component 2120 and the outer peripheral surface of the spiral wound internal filter element component 2060. The spiral wound internal filter element component 2060 can be arranged separately from the lower surface of the main body component 2120 so that the raw water flow path PW1 extends inward in the radial direction r to the lower part of the spiral wound internal filter element component 2060. That is, a raw water flow path PW1 is formed between the main body component 2120 and the spiral wound internal filter element component 2060. The spiral wound internal filter element component 2060 is separated from the lower surface of the main body component 2120, so that the raw water flow path PW1 extends to the lower part of the spiral wound internal filter element component 2060. As a result, the raw water W1 moves to the lower part of the spiral wound internal filter element component 2060 and passes through the spiral wound internal filter element component 2060. Thus, the first purified water C1 and the domestic water W2 are stably generated in a state that distinguishes between the first purified water C1 and the domestic water W2, and the working stability of the water purifier can be ensured.

[0240] like Figure 13 As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, a central tube 2061 is provided on the inner circumferential surface of the spirally wound internal filter element component 2060. This central tube supports the spirally wound internal filter element component 2060 in a spiral configuration, and a second through hole 2061a is formed so that the first purified water C1 flows into the first purified water flow path PC1 formed inside the spirally wound internal filter element component 2060. That is, with the central tube 2061 spirally wound with the spirally wound internal filter element component 2060, the first upper cover component 2210 is placed on top. Domestic water W2 discharged from the upper surface of the spirally wound internal filter element component 2060 can move through the first through hole 2210a to the domestic water flow path PW2 and then be discharged to the outside. At this time, an O-ring OR can be provided between the upper part of the central tube 2061 and the first upward guide member 2211 to prevent the discharged domestic water W2 from flowing into the first purified water flow path PC1. Furthermore, the first purified water C1, which moves along the inner surface of the spiral-wound internal filter element 2060, moves to the first purified water flow path PC1 through the second through hole 2061a of the central tube 2061. That is, the central tube 2061 is provided on the inner circumferential surface of the spiral-wound internal filter element 2060, so that the spiral-wound internal filter element 2060 is wound and arranged in a spiral shape. At the same time, the first purified water flow path PC1 formed on the inner side of the spiral-wound internal filter element 2060 is stably maintained, thereby allowing the first purified water C1 to flow smoothly and ensuring operational reliability.

[0241] At this time, as Figure 18As shown, in the water purifier with a composite filter element according to an embodiment of the present invention, the fourth upper cover component 2240 includes at least two first support protrusions 2243 protruding outward in the radial direction r around its outer peripheral surface. The first support protrusions 2243 are arranged at equal intervals. That is, the first support protrusions 2243 protruding outward in the radial direction r are formed around the outer peripheral surface of the fourth upper cover component 2240 to support the inner surface of the main body component 2120. This ensures the flow path PW1 of the raw water so that the raw water W1 entering the upper part of the housing 2100 moves to the filter part 2200. The equal intervals of the first support protrusions 2243 allow the raw water to move uniformly along the circumferential direction of the fourth upper cover component 2240, thereby improving the flow of the raw water W1 and ensuring product reliability. At this time, a second support protrusion protruding outward in the radial direction r can also be formed around the outer peripheral surface of the third upper cover component 2230. The second support protrusion supports the inner surface of the fourth upper cover component 2240, thereby allowing the second purified water C2 that enters from the outside to flow stably.

[0242] like Figure 11 As shown, in the water purifier with composite filter element of this invention embodiment, the water purifier with composite filter element of this invention may further include: a valve section 2300, which is used to control the flow of raw water W1, first purified water C1, second purified water C2, third purified water C3 and domestic water W2; and a control section 2400, which is used to control the operation of the valve section 2300. This valve section 2300 may include: a first valve 2310, which is used to control the flow of raw water W1; a second valve 2320, which is used to control the flow of first purified water C1; a third valve 2330, which is used to control the flow of second purified water C2; a fourth valve 2340, which is used to control the flow of third purified water C3; and a fifth valve 2350, which is used to control the flow of domestic water W2. That is, the flow of raw water W1, first purified water C1, second purified water C2, third purified water C3 and domestic water W2 can be controlled by the control unit 2400, and the backflow of these fluids can be effectively prevented, thereby ensuring product reliability.

[0243] As mentioned above, the system can not only achieve the inlet of raw water W1, the outlet of first purified water C1, the inlet of second purified water C2, and the outlet of third purified water C3, but also the discharge of domestic water W2. Therefore, by integrating the spiral-wound internal filter element component 2060 into a composite filter element, user convenience is improved. Furthermore, the head component 2110 of the housing 2100 is equipped with a first partition wall 2111, a second partition wall 2112, a third partition wall 2113, and a fourth partition wall 2114 to form independent flow paths for the mixing of raw water W1, first purified water C1, second purified water C2, third purified water C3, and domestic water W2. This concentrates the flow channels for raw water W1, first purified water C1, second purified water C2, third purified water C3, and domestic water W2 in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts. A first upper cover component 2210 and a second upper cover component 2220 are stacked in the filter section 2200. A first through hole 2210a is formed in the first upper cover component 2210, so that the discharged domestic water W2 flows through the domestic water flow path PW2 formed between the first upper cover component 2210 and the second upper cover component 2220. Furthermore, miniaturization is achieved by reducing the axial height of the composite filter element, and manufacturability is improved by simplifying the structure.

[0244] Figure 20 To illustrate the structure of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 21 To illustrate a top view of the head assembly of a water purifier with a composite filter element according to another embodiment of the present invention, Figure 22 This is a cross-sectional view showing the assembled state of the filter section of a water purifier with a composite filter element according to another embodiment of the present invention. Figure 23 This is a cross-sectional view showing the disassembled upper and lower cover components of a water purifier with a composite filter element according to another embodiment of the present invention. Wherein, 'a' refers to the axial direction of the composite filter element, and 'r' refers to the radial direction of the composite filter element. For clarity, parts irrelevant to the description are omitted in the drawings.

[0245] like Figures 20 to 23As shown, the water purifier with a composite filter element of the present invention may include: a housing portion 3100, which is provided with a raw water inlet port 3010, a first purified water outlet port 3020, an externally treated water inlet port 3030, a third purified water outlet port 3040, and a domestic water outlet port 3050. The raw water inlet port 3010 is used to allow raw water W1 to enter, the first purified water outlet port 3020 is used to allow filtered first purified water C1 to exit, the externally treated water inlet port 3030 is used to allow externally treated water C1' generated by treating the first purified water C1 externally to enter, the third purified water outlet port 3040 is used to allow filtered third purified water C3 to exit, and the domestic water outlet port 3050 is used to discharge domestic water W2 generated during the filtration process; and a filtration portion 3200, which is provided with a pretreatment internal filter element. The pretreatment internal filter element 3060, external treatment component 3070, spiral wound internal filter element 3080, and post-treatment internal filter element 3090 are arranged inside the housing portion 3100 to generate first purified water C1 by filtering raw water W1. The external treatment component 3070 is arranged outside the housing portion 3100 to generate externally treated water C1' by processing the first purified water C1. The spiral wound internal filter element 3080 is arranged inside the housing portion 3100 to generate second purified water C2 by filtering externally treated water C1'. The post-treatment internal filter element 3090 is arranged inside the housing portion 3100 to generate third purified water C3 by filtering the second purified water C2, and is stacked below the pretreatment internal filter element 3060. That is, raw water W1, which enters through the raw water inlet port 3010, flows through the pretreatment internal filter element 3060 installed in the filtration section 3200, and then exits to the outside through the first purified water outlet port 3020. After flowing through the external treatment component 3070, it enters again through the external treated water inlet port 3030, and then sequentially passes through the spiral wound internal filter element 3080 and the post-treatment internal filter element 3090. Finally, the filtered third purified water C3 exits through the third purified water outlet port 3040 and is provided to the user. Alternatively, it can be stored in a separate purified water storage unit, or it can be supplied to the cold water generation unit, hot water generation unit, and ice generation unit for the purpose of generating cold water, hot water, and ice. Furthermore, after the externally treated water C1' moves to the lower side of the spiral-wound internal filter element 3080, it moves into the interior of the spiral-wound internal filter element 3080. The domestic water W2 generated by the externally treated water C1' being filtered in the spiral-wound internal filter element 3080 is discharged to the outside of the housing 3100 through the domestic water discharge port 3050, and can then be discharged to the outside of the water purifier through an additional pipe.As described above, it can not only achieve the inflow of raw water W1 and the outflow of purified water C, but also the discharge of domestic water W2. Therefore, during the flow of raw water W1 through the composite filter element, the external treatment component 3070 can be used to achieve additional functions. This is achieved by integrating the spiral-wound internal filter element component 3080 into the composite filter element, thereby improving user convenience. In this case, the pretreatment internal filter element component 3060 can be a pre-activated carbon filter element or a microfiltration (MF) filter element, and the post-treatment internal filter element component 3090 can be a post-activated carbon filter element or a microfiltration filter element. Alternatively, the pretreatment internal filter element component 3060 and the post-treatment internal filter element component 3090 can also include filter elements using an electrodeionization method. Electrodeionization methods refer to electrodeionization (EDI), continuous electrodeionization (CEDI), capacitive deionization (CDI), etc. At this time, a separate filter element can be provided on the outer surface of the pretreatment internal filter element 3060. For example, such a filter element can be an NT filter element. This NT filter element can be made of an electrostatically charged material, such as a nano-trap material, to adsorb foreign matter contained in the incoming raw water W1. This material can be configured to be positively charged. Thus, negatively charged foreign matter contained in the raw water W1, such as viruses, bacteria, and fine powder, can be electrostatically adsorbed in the NT filter element. Furthermore, this filter element can also be a sediment filter element. The aforementioned spiral-wound internal filter element 3080 can be a reverse osmosis filter element or a hollow fiber membrane filter element. At this time, the external treatment unit 3070 can be an additional functional filter element (a deionization filter element for removing heavy metals) or a pump for increasing the pressure of the first purified water C1. In addition, the external treatment unit 3070 is not limited to a component that performs physical / chemical treatment of the first purified water C1 by other filter elements, etc., and can include a temporary tank for temporarily containing the first purified water C1.

[0246] like Figure 21As shown, the aforementioned housing 3100 includes: a head component 3110, which is provided with a first partition wall 3111 to prevent raw water W1 from mixing with first purified water C1, a second partition wall 3112 to prevent first purified water C1 from mixing with external treated water C1', a third partition wall 3113 to prevent external treated water C1' from mixing with domestic water W2, and a fourth partition wall 3114 to prevent third purified water C3 from mixing with raw water W1; and a main body component 3120, which extends from the head component 3110 and has a filter section 3200 disposed inside it. That is, the present invention provides a structure in which the incoming raw water W1, the outgoing first purified water C1, the incoming externally treated water C1', the outgoing third purified water C3, and the discharged domestic water W2 enter the upper part of the composite filter element and exit / discharge from the upper part. For this purpose, the head component 3110 is formed with a raw water region RW1 for the incoming raw water W1, a first purified water region RC1 for the outgoing first purified water C1, an externally treated water region RC1' for the incoming externally treated water C1', a third purified water region RC3 for the outgoing third purified water C3, and a domestic water region RW2 for the discharge of domestic water W2. Therefore, the head component 3110 of the housing 3100 is provided with the aforementioned first partition wall 3111, second partition wall 3112, third partition wall 3113 and fourth partition wall 3114 to form independent flow paths that prevent raw water W1, first purified water C1, externally treated water C1', third purified water C3 and domestic water W2 from mixing. As a result, the pipes through which raw water W1, first purified water C1, externally treated water C1', third purified water C3 and domestic water W2 flow are concentrated in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts.

[0247] like Figure 22 and Figure 23As shown, the filtration unit 3200 includes: a first upper cover member 3210, which has a pre-treatment internal filter element member 3060 and a spirally wound internal filter element member 3080 disposed at its lower part, wherein the pre-treatment internal filter element member 3060 is disposed on the outer side in the radial direction r, and the spirally wound internal filter element member 3080 is disposed on the inner side in the radial direction r; and a second upper cover member 3220, which has a post-treatment internal filter element member 3090 disposed at its lower part, and a spirally wound internal filter element member 3080 disposed through it, wherein the post-treatment internal filter element member 3090 is disposed on the outer side in the radial direction r, and the spirally wound internal filter element member 3080 is disposed on the inner side in the radial direction r. With the pretreatment internal filter element 3090 stacked below the pretreatment internal filter element 3060, a first through hole 3220a can be formed in the second upper cover element 3220 for fixing the posttreatment internal filter element 3090, which passes through the spirally wound internal filter element 3080. Furthermore, a first downward support guide 3212 extending downward along the axial direction a can be formed in the first upper cover element 3210. The first downward support guide 3212 may include a first-1 downward support guide 3212a disposed on the outer side in the radial direction r and a first-2 downward support guide 3212b disposed on the inner side in the radial direction r to fix the pretreatment internal filter element 3060. A second downward support guide 3221 extending downward along the axial direction a can also be formed in the second upper cover element 3220. The second downward support guide 3221 may include a second-1st downward support guide 3221a disposed on the outer side in the radial direction r and a second-2nd downward support guide 3221b disposed on the inner side in the radial direction r to fix the post-treatment internal filter element 3090. As described above, if the first downward support guide 3212 and the second downward support guide 3221 are formed, the pre-treatment internal filter element 3060 and the post-treatment internal filter element 3090 are stably fixed, thereby improving the durability of the water purifier. That is, the pre-treatment internal filter element 3060 and the post-treatment internal filter element 3090 are stacked in the filtration section 3200 through the first upper cover member 3210 and the second upper cover member 3220, and a spiral wound type internal filter element 3080 is disposed on the inner side of these internal filter elements in the radial direction r. Thus, the composite filter element is manufactured using the manufactured spiral wound type internal filter element 3080, thereby improving manufacturability. In the case of manufacturing a new spiral wound type internal filter element component 3080, if the length in the axial direction a is increased, the same filtration performance can be ensured even if the manufacturing thickness is thin, and the composite filter element can be made ultra-thin.

[0248] Figure 24 This is a cross-sectional view showing the state in which the filter section of a water purifier with a composite filter element according to another embodiment of the present invention is disposed in the housing.

[0249] like Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the filtration section 3200 further includes a second lower cover component 3230, which has a post-treatment internal filter element component 3090 and a spirally wound internal filter element component 3080 fixedly disposed on its upper part. The second lower cover component 3230 may include a connecting pipe 3231, which is disposed on the outer side of the spirally wound internal filter element component 3080 in the radial direction r, for preventing the first purified water C1 and the third purified water C3 from mixing with the externally treated water C1'. At this time, as Figure 24 As shown, this connecting pipe 3231 is disposed between the pretreatment internal filter element 3060 and the spiral wound internal filter element 3080 to divide the first purified water flow path PC1 and the external treated water flow path PC1'. Furthermore, it divides the third purified water flow path PC3 and the external treated water flow path PC1' disposed between the post-treatment internal filter element 3090 and the spiral wound internal filter element 3080. Specifically, the connecting pipe 3231 is provided in the second lower cover member 3230 used to fix the post-treatment internal filter element 3090 and the spiral wound internal filter element 3080. This connecting pipe 3231 extends along the axial direction a inside the pretreatment internal filter element 3060 and the post-treatment internal filter element 3090, thereby preventing the first purified water C1 passing through the pretreatment internal filter element 3060 and the third purified water C3 passing through the post-treatment internal filter element 3090 from mixing with the incoming external treated water C1', thus ensuring the operational stability of the water purifier.

[0250] like Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the filter unit 3200 may further include a third upper cover component 3240, which is stacked below the first upper cover component 3210 and is configured separately from the first upper cover component 3210 in such a way that the first purified water C1 is discharged to the outside through the first purified water flow path PC1. That is, the third upper cover component 3240 is disposed below the first upper cover component 3210 and is configured separately from the first upper cover component 3210 in such a way that the first purified water C1 flows through the first purified water flow path PC1. As a result, the working stability of the water purifier can be ensured as the first purified water C1 is discharged stably.

[0251] At this time, as Figure 22 and Figure 23As shown, in another embodiment of the water purifier with a composite filter element of the present invention, a first partition 3210a is provided on the lower surface of the first upper cover component 3210. The first partition 3210a extends downward in a manner that supports the upper surface of the third upper cover component 3240. That is, the first partition 3210a, which extends downward from the lower surface of the first upper cover component 3210, supports the upper surface of the third upper cover component 3240, thereby stably maintaining the separation distance between the first upper cover component 3210 and the third upper cover component 3240, thereby improving the structural stability of the composite filter element.

[0252] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the first upper cover component 3210 includes an upwardly extending first upward guide member 3211, and the third upper cover component 3240 includes an upwardly extending third upward guide member 3241, as shown. Figure 24 As shown, the first upward guide 3211 and the third upward guide 3241 are configured to be spaced apart from each other in order to form a first purified water flow path PC1. That is, the first upward guide 3211 and the third upward guide 3241 are configured to be spaced apart from each other and extend to form the first purified water flow path PC1 so that the first purified water C1 can flow out smoothly, thereby ensuring the working stability of the water purifier.

[0253] At this time, as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element of the present invention, the first partition wall 3111 can be extended along the first upward guide 3211 in the axial direction a. This first partition wall 3111, extending along the first upward guide 3211 in the axial direction a, can be combined with the head component 3110 and the main body component 3120 in such a way that the first partition wall 3111 covers the outer surface of the first upward guide 3211, or can be combined in a way that the first partition wall 3111 is inserted into the inner surface of the first upward guide 3211, or can be combined in a way that the first partition wall 3111 is placed at the upper end of the first upward guide 3211. That is, the first partition wall 3111 is arranged to extend along the first upward guide in the axial direction, thereby effectively preventing the first purified water from mixing with the incoming raw water, thereby improving the water quality of the final purified water C3 and increasing user satisfaction.

[0254] In addition, such as Figure 22 and Figure 23As shown, in another embodiment of the water purifier with a composite filter element, the second partition wall 3112 can be arranged to extend along the third upward guide 3241 in the axial direction a. This second partition wall 3112, extending along the third upward guide 3241 in the axial direction a, can be combined with the head component 3110 and the main body component 3120 in such a way that the second partition wall 3112 covers the outer surface of the third upward guide 3241, or can be combined in a way that the second partition wall 3112 is inserted into the inner surface of the third upward guide 3241, or can be combined in a way that the second partition wall 3112 is placed at the upper end of the third upward guide 3241. That is, by extending along the third upward guide 3241 in the axial direction a, the second partition wall 3112 effectively prevents the first purified water C1 from mixing with the incoming externally treated water C1', thereby preventing the water quality of the externally treated water C1' from decreasing and improving the water quality of the final purified water C3, and improving user satisfaction.

[0255] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the third upper cover component 3240 may include a third downward support guide 3242, which extends downward in connection with the connecting pipe 3231 to prevent the first purified water C1 from mixing with the externally treated water C1'. This third downward support guide 3242 and the connecting pipe 3231 are stacked along the axial direction a, and an O-ring OR for blocking the flow of the first purified water C1 may be provided between them. That is, the third downward support guide 3242, formed by extending downward from the third upper cover component 3240, is combined with the connecting pipe 3231, thereby effectively preventing the first purified water C1 from mixing with the incoming externally treated water C1', thus preventing the water quality of the externally treated water C1' from decreasing and improving the water quality of the final purified water C3, and improving user satisfaction.

[0256] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the filter section 3200 is stacked and disposed below the third upper cover component 3240, as shown. Figure 24 As shown, a fourth upper cover member 3250 may also be included, which is spaced apart from the third upper cover member 3240, so that the external treated water C1' flows through the external treated water flow path PC1'. That is, the fourth upper cover member 3250 is disposed below the third upper cover member 3240 and is spaced apart from the third upper cover member 3240 in such a way as to form the external treated water flow path PC1' through which the external treated water C1' flows. As a result, the external treated water C1' flows stably, thereby ensuring the operational stability of the water purifier.

[0257] At this time, as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element of the present invention, a second partition 3240a may be provided on the lower surface of the third upper cover member 3240, which extends downward in a manner that supports the upper surface of the fourth upper cover member 3250. That is, the second partition 3240a, which extends downward from the lower surface of the third upper cover member 3240, supports the upper surface of the fourth upper cover member 3250, thereby stably maintaining the separation distance between the third upper cover member 3240 and the fourth upper cover member 3250, thereby improving the structural stability of the composite filter element.

[0258] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the fourth upper cover component 3250 includes an upwardly extending fourth upward guide 3251, as shown... Figure 24 As shown, the fourth upward guide 3251 can be configured separately from the third upward guide 3241 in a manner that forms an external treated water flow path PC1'. That is, the fourth upward guide 3251 is configured separately from the third upward guide 3241 and forms an external treated water flow path PC1', so that the incoming external treated water C1' flows smoothly, thereby ensuring the operational stability of the water purifier.

[0259] At this time, as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the third partition wall 3113 can be extended along the fourth upward guide 3251 in the axial direction a. This third partition wall 3113, extending along the fourth upward guide 3251 in the axial direction a, can be combined with the head component 3110 and the main body component 3120 in such a way that the third partition wall 3113 covers the outer surface of the fourth upward guide 3251, or can be combined in a way that the third partition wall 3113 is inserted into the inner surface of the fourth upward guide 3251, or can be combined in a way that the third partition wall 3113 is placed at the upper end of the fourth upward guide 3251. That is, the third partition wall 3113 is extended along the fourth upward guide 3251 in the axial direction a, thereby effectively preventing the incoming externally treated water C1' from mixing with the discharged domestic water W2, thus preventing the water quality of the externally treated water C1' from decreasing and improving the water quality of the final discharged third purified water C3, and improving user satisfaction.

[0260] Figure 25 for Figure 23 Sectional view of part I-I, Figure 26 for Figure 23 Sectional view of part II-II, Figure 27 for Figure 23 Sectional view of part III-III.

[0261] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the fourth upper cover component 3250 may include a fourth downward support guide 3252 extending downward along the axial direction a in a manner that surrounds the spirally wound internal filter element component 3080. An additional sealing member PK, supported by the fourth downward support guide 3252, may be provided in this spirally wound internal filter element component 3080. That is, the spirally wound internal filter element component 3080 is supported by the fourth downward support guide 3252, thereby improving the structural stability of the composite filter element. Figure 25 As shown, in this fourth upper cover component 3250, a third support protrusion 3253 is formed extending outward in the radial direction r. With multiple third support protrusions 3253 arranged spaced apart from each other, the inner surface of the connecting pipe 3231 is supported, thereby improving structural stability and allowing the incoming external treated water C1' to flow smoothly, thus ensuring the working stability of the water purifier.

[0262] In addition, such as Figure 22 As shown, in another embodiment of the water purifier with a composite filter element, the filtration section 3200 further includes a central tube 3081, which supports the spirally wound internal filter element component 3080 wound in a spiral shape and forms a second purified water through hole 3081a, allowing the second purified water C2 to flow inward. The second lower cover component 3230 may include a second through hole 3230a, through which the central tube 3081 is disposed so that the second purified water C2 flowing through the central tube 3081 flows downward. The lower part of this central tube 3081 is supported on the lower surface of the housing section 3100 in a state of passing through the second through hole 3230a. A through portion TH1 is formed in the central tube 3081, through which a second through hole 3230a is formed. A second clean water through hole 3081a is also formed in this through portion TH1. The second clean water C2, which moves to the inside of the central tube 3081, moves to the lower part of the central tube 3081 through the second clean water through hole 3081a formed in the non-through portion TH2 of the central tube 3081, and moves to the lower part of the second lower cover member 3230 through the second clean water through hole 3081a formed in the through portion TH1. That is, when the spiral-wound internal filter element component 3080 is supported in a spiral shape wound around the central tube 3081, the second purified water C2 moves through the second purified water through hole 3081a into the interior of the central tube 3081, thereby improving structural stability. The central tube 3081 is disposed through the second lower cover component 3230, so that the second purified water C2 flows stably to the lower part of the second lower cover component 3230, thereby improving the working stability of the water purifier.

[0263] At this time, as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element of the present invention, the second lower cover component 3230 includes a downwardly extending second downward guide 3232, which may include a third through hole 3232a for allowing the second purified water C2 that has moved to the lower part of the second lower cover component 3230 to flow. As described above, the second purified water C2 that has moved to the lower part of the second lower cover component 3230 moves from the central portion in the radial direction r to the outer side in the radial direction r, and then moves around the second lower cover component 3230 to the post-treatment internal filter element component 3090. Figure 26 As shown, a second support protrusion 3233 extending outward in the radial direction r is formed in the second lower cover member 3230. With multiple second support protrusions 3233 spaced apart, they support the inner surface of the main body member 3120 of the housing portion 3100, thereby improving structural stability and allowing the second purified water C2 to flow smoothly. This second lower cover member 3230 may also form a second upward support guide 3234 extending upward in the axial direction a. The second upward support guide 3234 may include a second-1 upward support guide 3234a disposed on the outer side in the radial direction r and a second-2 upward support guide 3234b disposed on the inner side in the radial direction r, to secure the post-treatment internal filter element member 3090. As described above, by forming the second upward support guide 3234, the post-treatment internal filter element member 3090 is stably secured, thereby improving the durability of the water purifier. Furthermore, the post-treatment internal filter element 3090 is assembled using the second upper cover component 3220 and the second lower cover component 3230, thereby improving workability. Specifically, the second downward guide 3232 supports the lower surface of the housing portion 3100, thereby stably maintaining the separation between the second lower cover component 3230 and the lower surface of the housing portion 3100. This allows the second purified water C2, which moves to the lower part of the second lower cover component 3230, to move smoothly through the third through hole 3232a formed in the second downward guide 3232, thereby ensuring the operational stability of the water purifier.

[0264] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the filtration unit 3200 further includes a first lower cover component 3260 on top of a pretreatment internal filter element component 3060, which is fixedly disposed on the upper part. The first lower cover component 3260 is stacked on top of the second upper cover component 3220, as shown. Figure 24As shown, a third partition 3260a may be included, extending downwards in a manner supported on the upper surface of the second upper cover member 3220, to form a third purified water flow path PC3 for allowing the third purified water C3 to flow. In this first lower cover member 3260, a first upward support guide 3261 extending upwards along the axial direction a may be formed. The first upward support guide 3261 may include a first-1 upward support guide 3261a disposed on the outer side in the radial direction r and a first-2 upward support guide 3261b disposed on the inner side in the radial direction r, to secure the pretreatment internal filter element member 3060. As described above, by forming the first upward support guide 3261, the pretreatment internal filter element member 3060 is stably secured, thereby improving the durability of the water purifier. That is, the pretreatment internal filter element 3060 can be fixed by arranging the first upper cover element 3210 and the first lower cover element 3260 on the upper and lower parts of the pretreatment internal filter element 3060, respectively. Thus, the modularization of the composite filter element can be achieved through the component assembly process, thereby improving workability. A third partition 3260a is formed by extending downward from the lower surface of the first lower cover element 3260 and supported by the upper surface of the second upper cover element 3220. Thus, the spacing between them is stably maintained and the third purified water C3 flows smoothly, thereby ensuring the working stability of the water purifier.

[0265] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the filter section 3200 is stacked on top of the first upper cover member 3210, as illustrated. Figure 24 As shown, it also includes a fifth upper cover component 3270, which is configured to be spaced apart from the first upper cover component 3210 in a manner that allows raw water W1 to flow through the raw water flow path PW1. The fifth upper cover component 3270 may include a fourth partition 3270a extending downward in a manner supported by the upper surface of the first upper cover component 3210. Figure 27 As shown, a first support protrusion 3213 extending outward in the radial direction r is formed in the first upper cover member 3210. With multiple first support protrusions 3213 spaced apart from each other, they support the inner surface of the fifth upper cover member 3270, thereby improving structural stability and allowing the incoming raw water W1 to flow smoothly. That is, the fifth upper cover member 3270 is positioned above the first upper cover member 3210, separated from the first upper cover member 3210 in a manner that forms a raw water flow path PW1 for the raw water W1, ensuring smooth flow of the raw water W1 and thus guaranteeing the operational stability of the water purifier.

[0266] At this time, as Figure 22 and Figure 23As shown, in another embodiment of the water purifier with a composite filter element, the fifth upper cover component 3270 includes an upwardly extending fifth upward guide member 3271, as shown... Figure 24 As shown, the fifth upward guide 3271 can be configured separately from the first upward guide 3211 in a manner that forms the raw water flow path PW1. That is, the fifth upward guide 3271 is configured separately from the first upward guide 3211 and forms the raw water flow path PW1, so that the incoming raw water W1 flows smoothly, thereby ensuring the working stability of the water purifier.

[0267] At this time, as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the fourth partition wall 3114 can be extended along the fifth upward guide member 3271 in the axial direction a. This fourth partition wall 3114, extending along the fifth upward guide member 3271 in the axial direction a, can be combined with the head member 3110 and the main body member 3120 in such a way that the fourth partition wall 3114 covers the outer surface of the fifth upward guide member 3271, or can be combined in a way that the fourth partition wall 3114 is inserted into the inner surface of the fifth upward guide member 3271, or can be combined in a way that the fourth partition wall 3114 is placed at the upper end of the fifth upward guide member 3271. That is, the fourth partition wall 3114 is arranged to extend along the fifth upward guide member 3271 in the axial direction a, thereby effectively preventing the incoming externally treated water C1' from mixing with the discharged domestic water W2, thus preventing the water quality of the externally treated water C1' from decreasing and improving the water quality of the final discharged third purified water C3, and improving user satisfaction.

[0268] In addition, such as Figure 22 and Figure 23 As shown, in another embodiment of the water purifier with a composite filter element, the fifth upper cover component 3270 includes a downwardly extending fifth downward support guide 3272, which can extend to the first lower cover component 3260. That is, the fifth downward support guide 3272 extends from the first upper cover component 3210 to the first lower cover component 3260, thereby preventing the incoming raw water W1 from mixing with the outgoing purified water C3, thus ensuring the operational stability of the water purifier.

[0269] Figure 28 This is a structural diagram of the entire water pipe of a water purifier with a composite filter element according to another embodiment of the present invention.

[0270] In addition, such as Figure 28As shown, another embodiment of the water purifier with a composite filter element of the present invention may further include: a valve section 3300 for controlling the flow of raw water W1, first purified water C1, externally treated water C1', third purified water C3, and domestic water W2; and a control section 3400 for controlling the operation of the valve section 3300. This valve section 3300 may include: a first valve 3310 for controlling the flow of raw water W1; a second valve 3320 for controlling the flow of first purified water C1; a third valve 3330 for controlling the flow of externally treated water C1'; a fourth valve 3340 for controlling the flow of third purified water C3; and a fifth valve 3350 for controlling the flow of domestic water W2. In this case, the incoming raw water W1 moves to a state of reduced pressure via the pressure reducing valve 3011. That is, the flow of raw water W1, first purified water C1, external treated water C1', third purified water C3 and domestic water W2 can be controlled by the control unit 3400 and the valve unit 3300, and the backflow of these fluids can be effectively prevented, thereby ensuring product reliability.

[0271] As mentioned above, the water purifier with a composite filter element of the present invention can not only realize the inlet of raw water W1, the outlet of first purified water C1, the inlet of externally treated water C1', and the outlet of third purified water C3, but also the discharge of domestic water W2. Therefore, during the flow of raw water W1 through the composite filter element, the external treatment component 3070 can be used to achieve additional functions. Furthermore, by integrating the spirally wound internal filter element component 3080 into a single composite filter element, user convenience is improved. A first partition wall 3111, a second partition wall 3112, a third partition wall 3113, and a fourth partition wall 3114 are provided in the head component 3110 of the housing 3100 to form a system of raw water W1, first purified water C1, and externally treated water... The independent flow paths of C1', the third purified water C3, and the domestic water W2 prevent them from mixing. This concentrates the flow of raw water W1, first purified water C1, externally treated water C1', third purified water C3, and domestic water W2 in the upper part of the composite filter element, thereby increasing the freedom of layout design for other parts. In the filtration section 3200, the pretreatment internal filter element 3060 and the posttreatment internal filter element 3090 are stacked by the first upper cover component 3210 and the second upper cover component 3220. A spiral wound internal filter element 3080 is arranged inside these internal filter elements in the radial direction r. Thus, the composite filter element can be manufactured using the already manufactured spiral wound internal filter element 3080, thereby improving manufacturability.

[0272] The above describes one embodiment of the present invention. However, the concept of the present invention is not limited to the embodiment disclosed in this specification. Those skilled in the art can easily propose another embodiment by adding, changing, deleting, or adding structural elements within the same conceptual scope, and such embodiment is also included within the conceptual scope of the present invention.

Claims

1. A water purifier with a composite filter element, characterized in that, include: The housing includes a raw water inlet port, a second purified water outlet port, an external treated water inlet port, a third purified water outlet port, and a domestic water outlet port. The raw water inlet port allows raw water to enter; the second purified water outlet port allows filtered second purified water to exit; the external treated water inlet port allows externally treated water (generated by externally treating the second purified water) to enter; the third purified water outlet port allows filtered third purified water to exit; and the domestic water outlet port discharges domestic water generated during the filtration process. The filtration unit includes a pretreatment internal filter element, a spiral wound internal filter element, an external treatment element, and a post-treatment internal filter element. The pretreatment internal filter element is disposed inside the housing to generate first purified water by filtering the raw water. The spiral wound internal filter element is disposed inside the housing to generate second purified water by filtering the first purified water. The external treatment element is disposed outside the housing to generate externally treated water by treating the second purified water. The post-treatment internal filter element is disposed inside the housing to generate third purified water by filtering the incoming externally treated water. The aforementioned housing portion includes: The head assembly includes a first partition wall to prevent the raw water from mixing with the externally treated water, a second partition wall to prevent the raw water from mixing with the domestic water, a third partition wall to prevent the second purified water from mixing with the domestic water, and a fourth partition wall to prevent the second purified water from mixing with the third purified water. The main body extends from the head component and has the filter section disposed inside it; The above-mentioned filter section includes: The first module is sequentially provided with the aforementioned pretreatment internal filter element component and the aforementioned spiral wound internal filter element component, and The second module is stacked below the first module and is provided with the post-processing internal filter element. The second module includes a discharge pipe component, which is disposed through the center of the first module to allow the third purified water to be discharged to the outside. The aforementioned third partition wall extends axially along the central tube of the aforementioned first module. The aforementioned fourth partition wall extends along the aforementioned discharge pipe component in the axial direction.

2. The water purifier with a composite filter element according to claim 1, characterized in that, The first module includes a central tube that supports the spirally wound internal filter element in a spiral shape and has a second purified water through hole, allowing the second purified water to flow inward. The aforementioned discharge pipe component is disposed through the center of the aforementioned central pipe and is spaced apart at a certain distance, so as to form a second clean water flow path for the second clean water to flow between the aforementioned central pipe and the aforementioned discharge pipe component.

3. The water purifier with a composite filter element according to claim 1, characterized in that, The first module includes a first upper cover component, on which the aforementioned pretreatment internal filter element component is disposed on the outer side in the radial direction, and on the inner side in the radial direction, the aforementioned spirally wound internal filter element component is disposed. The aforementioned first upper cover component includes a first upward guide member, which is arranged at a certain distance from the aforementioned central pipe to form a domestic water flow path for allowing the discharged domestic water to flow.

4. The water purifier with a composite filter element according to claim 3, characterized in that, The aforementioned second partition wall extends along the aforementioned first upward guide member in an axial direction.

5. The water purifier with a composite filter element according to claim 3, characterized in that, The first module also includes a first lower cover component, which is fixedly configured with the aforementioned pretreatment internal filter element component.

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