Filter assembly

Abstract

This filter assembly comprises: a frame; an inlet pipe which can be installed on the frame and provided so that water can flow in; an outlet pipe which can be installed on the frame and provided so that the water can be discharged; a filter which filters the water flowing in through the inlet pipe and provides the water to the outlet pipe; and a filter holder to which the filter can be detachably installed and which is provided to allow the filter to be in communication with the inlet pipe and the outlet pipe. The filter holder may be provided to be rotatable between a first position and a second position. The filter holder may include a protrusion protruding upward. The frame may include a guide that is elastically deformable.

Description

filter assembly

[0001] The present disclosure relates to a filter assembly.

[0002] In general, a water purifier is a device that filters water through physical and / or chemical methods to provide clean water to users.

[0003] A water purifier may include at least one filter to remove foreign substances contained in water. The filter may be installed on a water flow path.

[0004] Filters are consumables and must be replaced after a certain period of use. If the filter is improperly installed during replacement, water may not be properly filtered or may leak. However, it is difficult for users to determine whether the filter is properly installed.

[0005] One aspect of the present disclosure provides a filter assembly with improved ease of use.

[0006] One aspect of the present disclosure provides a filter assembly having an improved structure.

[0007] One aspect of the present disclosure provides a filter assembly that allows easy replacement of the filter.

[0008] One aspect of the present disclosure provides a filter assembly that allows a user to easily recognize a replaceable state and a usable state of the filter.

[0009] One aspect of the present disclosure provides a filter assembly capable of reducing and / or preventing leakage.

[0010] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0011] A filter assembly according to the invention may include a frame; an inlet pipe mountable to the frame and configured to allow water to flow in; an outlet pipe mountable to the frame and configured to allow water to flow out; a filter configured to filter water flowing in through the inlet pipe and provide the filter to the outlet pipe; and a filter holder, on which the filter is detachably mounted and configured to communicate the filter with the inlet pipe and the outlet pipe. The filter holder is rotatable between a first position and a second position. The filter holder is rotatable between a first position for vertically arranging a filter mounted on the filter holder, and a second position for inclinedly arranging a filter mounted on the filter holder with respect to the vertical direction. The filter holder may include a protrusion protruding upward. The frame may include an elastically deformable guide. The guide of the frame may be arranged in a first state while the filter holder is in the first position or the second position. The guide of the above frame can be provided in a second state deformed from the first state by being pressed by the protrusion while the filter holder is in a third position between the first position and the second position.

[0012] A filter assembly according to the invention may include a frame; a supporter fixed to the frame; an inlet pipe mounted on one side of the supporter and configured to allow water to flow in; an outlet pipe mounted on the other side of the supporter and configured to allow water to flow out; a filter holder rotatably supported by the supporter and configured to communicate with the inlet pipe and the outlet pipe; and a filter detachably mounted on the filter holder and configured to communicate with the filter holder and configured to filter water. The filter holder may include a protrusion protruding upward. The frame may include a cantilever-shaped guide that is elastically deformable by the protrusion.

[0013] Fig. 1 is a perspective view illustrating a water purifier according to one embodiment.

[0014] FIG. 2 is a perspective view illustrating a state in which a cover is separated from a case in a water purifier according to one embodiment.

[0015] FIG. 3 is a perspective view illustrating a filter assembly according to one embodiment.

[0016] FIG. 4 is a front view illustrating a filter assembly according to one embodiment.

[0017] FIG. 5 is a perspective view showing a filter assembly from the rear according to one embodiment.

[0018] FIG. 6 is an exploded perspective view illustrating a portion of a filter assembly according to one embodiment.

[0019] Figure 7 is a perspective view illustrating a frame according to one embodiment.

[0020] Figure 8 is a perspective view illustrating a supporter according to one embodiment.

[0021] FIG. 9 is a perspective view illustrating a filter holder according to one embodiment.

[0022] FIG. 10 is a drawing illustrating a filter assembly according to one embodiment, wherein at least one filter holder is positioned at a first position.

[0023] FIG. 11 is a drawing illustrating a filter assembly according to one embodiment, wherein at least one filter holder is positioned at a second position.

[0024] FIG. 12 is a drawing showing a filter assembly according to one embodiment, wherein at least one filter holder is positioned at a third position.

[0025] Fig. 13 is a cutaway perspective view taken along line A-A' shown in Fig. 10.

[0026] Fig. 14 is a side cross-sectional view taken along line A-A' shown in Fig. 10.

[0027] Fig. 15 is a cutaway perspective view taken along line B-B' shown in Fig. 11.

[0028] Figure 16 is a cross-sectional view taken along line B-B' shown in Figure 11.

[0029] Fig. 17 is a cutaway perspective view taken along the line C-C' shown in Fig. 12.

[0030] Figure 18 is a cross-sectional view taken along the line C-C' shown in Figure 12.

[0031] Fig. 19 is a cutaway perspective view taken along the line C-C' shown in Fig. 12, and is a cutaway perspective view taken from a different direction than Fig. 17.

[0032] Figure 20 schematically illustrates a process in which a filter holder is switched from a third position to a first position according to one embodiment.

[0033] Figure 21 schematically illustrates a process in which a filter holder is switched from a third position to a second position according to one embodiment.

[0034] Fig. 22 is a cross-sectional view showing an example of a state before the filter is attached to the filter holder.

[0035] Figure 23 is an enlarged view of a portion of Figure 22.

[0036] Fig. 24 is a cross-sectional view showing an example of a state in which a filter is coupled to a filter holder.

[0037] Figure 25 is an enlarged view of a portion of Figure 23.

[0038] Fig. 26 is a perspective view illustrating a refrigerator according to one embodiment.

[0039] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0040] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0041] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0042] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0043] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0044] The terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," or "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0045] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0046] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0047] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0048] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0049] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0050] Meanwhile, the terms "front", "back", "left", "right", "up", "down", etc. used in the following description are defined based on the drawing, and the shape and position of each component are not limited by these terms. For example, as illustrated in FIG. 1, the direction in which the cover (22) of the water purifier (1) faces can be defined as forward (+X direction), and the opposite direction can be defined as rear (-X direction).

[0051] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0052] Fig. 1 is a perspective view illustrating a water purifier according to one embodiment. Fig. 2 is a perspective view illustrating a state in which a cover is separated from a case in a water purifier according to one embodiment.

[0053] Referring to FIGS. 1 and 2, a water purifier (1) may include a main body (20). The water purifier (1) may include a filter assembly (10). The filter assembly (10) may be provided to be mountable to the main body (20). The water purifier (1) may be provided to filter water flowing into the water purifier (1) (hereinafter, referred to as “raw water”) and provide the filtered water (hereinafter, referred to as “purified water”) to a user.

[0054] The main body (20) can form the exterior of the water purifier (1). The main body (20) can be provided to accommodate a filter assembly (10).

[0055] The main body (20) may include a case (21) and a cover (22) detachably mounted to the case (21). The case (21) may have a space therein for arranging a filter assembly (10). The cover (22) may be provided to cover the filter assembly (10) arranged inside the case (21).

[0056] While the filter assembly (10) is placed inside the case (21) and the cover (22) is coupled to the case (21), the filter assembly (10) may be arranged so as not to be exposed to the outside of the water purifier (1).

[0057] While the filter assembly (10) is placed inside the case (21) and the cover (22) is separated from the case (21), at least a portion of the filter assembly (10) may be exposed to the outside of the water purifier (1).

[0058] For example, the cover (22) may be provided as a part of the front of the main body (20). For example, while the cover (22) is separated from the case (21), the filter assembly (10) arranged inside the case (21) may be arranged to be exposed toward the front (+X direction) of the water purifier (1). However, the present disclosure is not limited to the examples described above, and the position of the filter assembly (10) and / or the position of the cover (22) may, of course, vary. For example, the cover (22) may be provided as at least a part of the rear of the main body (20), and as the cover (22) is separated from the case (21), the filter assembly (10) arranged inside the case (21) may be exposed toward the rear (-X direction) of the water purifier (1).

[0059] The main body (20) may include a water outlet hole (23). The water outlet hole (23) may be provided to discharge purified water. The water outlet hole (23) may be provided to discharge filtered water. The water outlet hole (23) may be provided to discharge water that has passed through the filter assembly (10). The water outlet hole (23) may be directly and / or indirectly connected to the filter assembly (10). For example, a pipe and / or a hose may be provided to connect the filter assembly (10) and the water outlet hole (23).

[0060] The filter assembly (10) can be accommodated inside the main body (20). The filter assembly (10) can be placed inside the case (21). The filter assembly (10) can be covered by a cover (22).

[0061] The filter assembly (10) may include at least one filter (300) for filtering water. The at least one filter (300) may filter raw water to produce purified water. The raw water may become purified water as it passes through the at least one filter (300).

[0062] The filter assembly (10) may include a frame (100) for mounting at least one filter (300) inside the main body (20). The frame (100) may be placed inside the main body (20). The frame (100) may be coupled to a case (21). The frame (100) may be fixed inside the case (21).

[0063] Meanwhile, FIGS. 1 and 2 illustrate an example in which a filter assembly (10) is applied to a water purifier (1). However, the present disclosure is not limited to the example illustrated in FIGS. 1 and 2. The filter assembly (10) can be applied not only to the water purifier (1), but also to all products requiring water filtration. For example, the filter assembly (10) can be applied to home appliances that use water. For example, the filter assembly (10) can of course be applied to refrigerators (see 2, FIG. 26), dishwashers, washing machines, clothes managers, humidifiers, etc.

[0064] FIG. 3 is a perspective view illustrating a filter assembly according to one embodiment. FIG. 4 is a front view illustrating a filter assembly according to one embodiment. FIG. 5 is a perspective view illustrating a filter assembly from the rear according to one embodiment. FIG. 6 is an exploded perspective view illustrating a portion of a filter assembly according to one embodiment. FIG. 7 is a perspective view illustrating a frame according to one embodiment. FIG. 8 is a perspective view illustrating a supporter according to one embodiment. FIG. 9 is a perspective view illustrating a filter holder according to one embodiment.

[0065] Referring to FIGS. 3 to 9, the filter assembly (10) may include a frame (100). The filter assembly (10) may include at least one filter holder (200). The filter assembly (10) may include at least one filter (300). The filter assembly (10) may include an inlet pipe (410). The filter assembly (10) may include an outlet pipe (420). The filter assembly (10) may include a connecting pipe (430). The filter assembly (10) may include a supporter (500).

[0066] The drawing illustrates an example in which a filter assembly (10) includes two filter holders (200a, 200b). The filter assembly (10) may include a first filter holder (200a) and a second filter holder (200b). The first filter holder (200a) and the second filter holder (200b) may be arranged in parallel. For example, the first filter holder (200a) and the second filter holder (200b) may be arranged approximately along a horizontal direction (Y direction). The first filter holder (200a) may be arranged upstream of the second filter holder (200b) based on the direction of water flow. That is, the water may flow from the first filter holder (200a) toward the second filter holder (200b).

[0067] However, the present disclosure is not limited thereto, and the filter assembly (10) may include one filter holder (200) or may include three or more filter holders (200). In addition, the description of the filter holder (200) described below may be applied to both the first filter holder (200a) and the second filter holder (200b), unless the first filter holder (200a) and the second filter holder (200b) are clearly distinguished.

[0068] The drawing illustrates an example in which a filter assembly (10) includes two filters (300a, 300b). The filter assembly (10) may include a first filter (300a) and a second filter (300b). The first filter (300a) and the second filter (300b) may be arranged in parallel. For example, the first filter (300a) and the second filter (300b) may be arranged approximately along a horizontal direction (Y direction). The first filter (300a) may correspond to the first filter holder (200a), and the second filter (300b) may correspond to the second filter holder (200b). The first filter (300a) may be arranged upstream of the second filter (300b) based on the direction of water flow. That is, water can flow from the first filter (300a) toward the second filter (300b).

[0069] However, the present disclosure is not limited thereto, and the filter assembly (10) may include one filter (300) or may include three or more filters (300). In addition, the description of the filter (300) described below may be applied to both the first filter (300a) and the second filter (300b), unless the first filter (300a) and the second filter (300b) are clearly distinguished.

[0070] In some cases, the filter assembly (10) may not include some of the above-described configurations, or may include additional configuration(s) other than the above-described configurations.

[0071] At least one element constituting the filter assembly (10) may be detachably mounted on the frame (100). The frame (100) may be provided to fix and / or support at least one element constituting the filter assembly (10).

[0072] The frame (100) may include a receiving space (110). At least one filter (300) may be received in the receiving space (110). At least one filter (300) may be placed in the receiving space (110).

[0073] The receiving space (110) may be provided so that at least a portion thereof is open. For example, the receiving space (110) may be provided so as to be open toward the cover (22, see FIG. 2).

[0074] The frame (100) may include at least one wall (111, 112, 113, 114 and / or 115) to form a receiving space (110). The at least one wall (111, 112, 113, 114 and / or 115) may be provided to define the receiving space (110). For example, the frame (100) may include a bottom wall (111), a top wall (112), a right wall (113), a left wall (114) and a rear wall (115). The receiving space (110) may be a space surrounded by the bottom wall (111), the top wall (112), the right wall (113), the left wall (114) and the rear wall (115).

[0075] A handle groove (1111) may be formed in the bottom wall (111) of the frame (100). The handle groove (1111) of the frame (100) may be engaged with a handle (314) of the filter (300). The number of handle grooves (1111) may correspond to the number of filters (300). For example, although the drawing illustrates two handle grooves (1111), the present disclosure is not limited thereto, and the number of handle grooves (1111) may vary depending on the number of filters (300). For example, when the filter assembly (10) includes one filter (300), one handle groove (1111) corresponding to one handle (314) may be formed in the frame (100).

[0076] The frame (100) may include a first through hole (116). The inlet pipe (410) may be exposed to the outside of the frame (100) through the first through hole (116). For example, a member (e.g., a hose, a pipe, etc.) for guiding raw water may be connected to the inlet pipe (410) exposed through the first through hole (116). In FIG. 5, the first through hole (116) is illustrated as being formed in the rear wall (115), but the present disclosure is not limited thereto. The first through hole (116) may be formed in at least one wall (111, 112, 113, 114, and / or 115) corresponding to the position of the inlet pipe (410).

[0077] The frame (100) may include a second through hole (117). The outlet pipe (420) may be exposed to the outside of the frame (100) through the second through hole (117). The second through hole (117) may be spaced apart from the first through hole (116). For example, a member (e.g., a hose, a pipe, etc.) for guiding purified water may be connected to the outlet pipe (420) exposed through the second through hole (117). In FIG. 5, the second through hole (117) is illustrated as being formed in the rear wall (115), but the present disclosure is not limited thereto. The second through hole (117) may be formed in at least one wall (111, 112, 113, 114, and / or 115) corresponding to the position of the outlet pipe (420).

[0078] The frame (100) may include a first through hole (116) and a second through hole (117). However, as an example, the frame (100) may include one through hole, and a member for guiding raw water and a member for guiding purified water may pass through one through hole. Furthermore, as an example, the frame (100) may include three or more through holes.

[0079] The frame (100) may include a guide (120). The guide (120) may be provided to be elastically deformable. The guide (120) may protrude toward the receiving space (110). For example, the guide (120) may protrude forward from the rear wall (115).

[0080] When the filter holder (200) is mounted on the frame (100) (i.e., when the filter holder (200) is directly mounted on the frame (100) or indirectly mounted via another configuration), the guide (120) can be in contact with the filter holder (200). Specifically, the guide (120) may be provided to be in contact with a protrusion (240) of the filter holder (200) to be described later. The guide (120) may be provided to be elastically deformable by the protrusion (240) of the filter holder (200). The guide (120) may be provided to guide the filter holder (200) by being pressed by the protrusion (240) of the filter holder (200). A detailed description thereof will be described later.

[0081] For example, the guide (120) may include a cantilever shape. The guide (120) may include a fixed end (1201) and a free end (1202). For example, the fixed end (1201) of the guide (120) may be fixed to at least one wall (111, 112, 113, 114 and / or 115) of the frame (100). The fixed end (1201) may be fixed to the rear wall (115) of the frame (100). The free end (1202) may be provided without being supported by another configuration. The free end (1202) may not be fixed to at least one wall (111, 112, 113, 114 and / or 115) of the frame (100). A cantilever-shaped guide (120) with only one end (1201) fixed has a large deformation amount and is less likely to break compared to a guide with both ends fixed. Accordingly, the cantilever-shaped guide (120) can guide the filter holder (200) more easily.

[0082] For example, the guide (120) may include a first extension (121) and a second extension (122) extending upward from the first extension (121).

[0083] The first extension portion (121) may protrude toward the protrusion (240) of the filter holder (200). For example, the first extension portion (121) may extend forward (in the +X direction) from the rear wall (115) of the frame (100). The first extension portion (121) may include a fixed end (1201).

[0084] The second extension (122) may be bent upwardly from the first extension (121). The second extension (122) may be provided to be movable upward by the protrusion (240) of the filter holder (200). The second extension (122) may be provided to be pressed by the protrusion (240) of the filter holder (200). The second extension (122) may include a free end (1202).

[0085] For example, the frame (100) may include a guide forming portion (123) to form a guide (120). The guide forming portion (123) may be formed around the guide (120). The guide forming portion (123) may include a cut and / or penetrated portion of the frame (100).

[0086] For example, the guide forming portion (123) may include a first slit portion (1231), a second slit portion (1232), and a third slit portion (1233). The first slit portion (1231), the second slit portion (1232), and the third slit portion (1233) may have an approximately U-shape. The first slit portion (1231) may be spaced apart from the second slit portion (1232). The third slit portion (1233) may connect the first slit portion (1231) and the second slit portion (1232). The extension direction of the first slit portion (1231) may be approximately the same as the extension direction of the second slit portion (1232). The extension direction of the first slit portion (1231) and the extension direction of the third slit portion (1233) may be arranged to approximately intersect. The extension direction of the second slit portion (1232) and the extension direction of the third slit portion (1233) may be arranged to approximately intersect. As the above-described example, a cantilever-shaped guide (120) may be formed. However, the present disclosure is not limited to the above-described example, and as long as the guide (120) can guide the filter holder (200) by coming into contact with the protrusion (240), the shape of the guide (120) and the shape of the guide forming portion (123) are not limited.

[0087] Meanwhile, the number of guides (120) may correspond to the number of filter holders (200). The number of guides (120) may correspond to the number of filters (300). For example, although the drawing illustrates two guides (120), the present disclosure is not limited thereto, and the number of guides (120) may vary depending on the number of filter holders (200) and the number of filters (300). For example, when the filter assembly (10) includes one filter holder (200) and one filter (300), one guide (120) may be formed in the frame (100). For example, when the filter assembly (10) includes three filter holders (200) and three filters (300), three guides (120) may be formed in the frame (100).

[0088] The supporter (500) can be detachably coupled to the frame (100). For example, the supporter (500) can be screw-coupled to the frame (100). The supporter (500) can be fixed to the frame (100).

[0089] The supporter (500) may be fixed to the frame (100) and may be configured to allow water to flow in and out. For example, when the supporter (500) is mounted on the frame (100) and an inlet pipe (410) is installed on the supporter (500), water may flow into the supporter (500) through the inlet pipe (410). For example, when the supporter (500) is mounted on the frame (100) and an outlet pipe (420) is installed on the supporter (500), water may flow out from the supporter (500) through the outlet pipe (420).

[0090] The supporter (500) may be provided to secure the filter holder (200) to the frame (100). The supporter (500) may be provided to mount the filter holder (200) to the frame (100). The supporter (500) may rotatably support the filter holder (200). The supporter (500) may be coupled to the frame (100), and the filter holder (200) may be coupled to the supporter (500). However, unlike the above, for example, the filter holder (200) may be coupled to the frame (100) without the supporter (500). For example, the supporter (500) and the frame (100) may be formed integrally.

[0091] The supporter (500) may include at least one holder mounting portion (521, 522). Each of the holder mounting portions (521, 522) may be provided to correspond to each of the filter holders (200). For example, the supporter (500) may include a first holder mounting portion (521) corresponding to the first filter holder (200a), and a first holder mounting portion (522) corresponding to the second filter holder (200b). Each of the holder mounting portions (521, 522) may include a shape that surrounds a portion of each of the filter holders (200).

[0092] The number of holder mounting portions (521, 522) may correspond to the number of filter holders (200). The number of holder mounting portions (521, 522) may correspond to the number of filters (300). For example, in the drawing, the supporter (500) is illustrated as including two holder mounting portions (521, 522), but the present disclosure is not limited thereto, and the number of holder mounting portions (521, 522) may vary depending on the number of filter holders (200) and the number of filters (300). For example, when the filter assembly (10) includes one filter holder (200) and one filter (300), the supporter (500) may include one holder mounting portion. For example, if the filter assembly (10) includes three filter holders (200) and three filters (300), the supporter (500) may include three holder mounting portions.

[0093] The supporter (500) may include a first pipe mounting portion (523). The inlet pipe (410) may be provided to be mountable to the first pipe mounting portion (523) of the supporter (500). The inlet pipe (410) may be secured to the first pipe mounting portion (523) of the supporter (500). For example, the first pipe mounting portion (523) may be formed on one side of the supporter (500).

[0094] The supporter (500) may include a second pipe mounting portion (524). The outlet pipe (420) may be provided to be mountable to the second pipe mounting portion (524) of the supporter (500). The outlet pipe (420) may be secured to the second pipe mounting portion (524) of the supporter (500). The second pipe mounting portion (524) may be positioned spaced apart from the first pipe mounting portion (523). For example, the second pipe mounting portion (524) may be formed on the other side of the supporter (500).

[0095] The supporter (500) may include a third pipe mounting portion (525). The connecting pipe (430) may be provided to be mountable to the third pipe mounting portion (525) of the supporter (500). The connecting pipe (430) may be mounted on the third pipe mounting portion (525) of the supporter (500). However, if the filter assembly (10) includes only one filter (300) and one filter holder (200), the connecting pipe (430) is omitted, and thus the third pipe mounting portion (525) of the supporter (500) may also be omitted.

[0096] For example, the supporter (500) may include an upper supporting part (510) and a lower supporting part (520). The upper supporting part (510) and the lower supporting part (520) may be provided to be mutually connectable.

[0097] The lower supporting part (520) may include a holder mounting part (521, 522). The lower supporting part (520) may include a first pipe mounting part (523), a second pipe mounting part (524), and a third pipe mounting part (525).

[0098] The upper supporting part (510) may include a first supporting part (511) corresponding to the first pipe mounting part (523), a second supporting part (512) corresponding to the second pipe mounting part (524), and a third supporting part (513) corresponding to the third pipe mounting part (525).

[0099] However, the present disclosure is not limited to the above-described examples. The upper supporting portion (510) and the lower supporting portion (520) may be provided as a single unit. That is, the supporter (500) may be provided as a single component.

[0100] An inlet pipe (410) may be provided to allow water to flow in. The inlet pipe (410) may be provided to guide water supplied to the filter assembly (10). The inlet pipe (410) may be provided to guide raw water. The inlet pipe (410) may be provided to guide water flowing into the supporter (500). The raw water may be provided to flow along the inlet pipe (410). Water requiring filtering may be provided to flow along the inlet pipe (410). Water prior to passing through at least one filter (300) may be provided to flow along the inlet pipe (410).

[0101] The inlet pipe (410) is mountable to the frame (100). The inlet pipe (410) may be supported by the frame (100). For example, the inlet pipe (410) may be fixed to the frame (100) via a supporter (500). The inlet pipe (410) may be mounted on one side of the supporter (500). The inlet pipe (410) may be mounted on the first pipe mounting portion (523) of the supporter (500). However, the present disclosure is not limited to the above-described example. For example, the inlet pipe (410) may be directly fixed to the frame (100). For example, the inlet pipe (410) may be provided as an integral part with the supporter (500). For example, the inlet pipe (410) may be insert-molded with the supporter (500).

[0102] The inlet pipe (410) may include an inlet hole (411). Water may be introduced into the filter assembly (10) through the inlet hole (411). The inlet hole (411) may be connected to a raw water supply source through a member (e.g., a hose, a pipe, etc.) for guiding raw water. Alternatively, the inlet hole (411) may be directly connected to the raw water supply source. The inlet hole (411) may be exposed to the outside of the frame (100).

[0103] The outlet pipe (420) may be provided to allow water to flow out. The outlet pipe (420) may be provided to guide water flowing out of the filter assembly (10). The outlet pipe (420) may be provided to guide purified water. The outlet pipe (420) may be provided to guide water flowing out of the supporter (400). The purified water may be provided to flow along the outlet pipe (420). Filtered water may be provided to flow along the outlet pipe (420). Water that has passed through at least one filter (300) may be provided to flow along the outlet pipe (420).

[0104] The outlet pipe (420) is mountable to the frame (100). The outlet pipe (420) may be supported by the frame (100). For example, the outlet pipe (420) may be fixed to the frame (100) via the supporter (500). The outlet pipe (420) may be mounted on the other side of the supporter (500). The outlet pipe (420) may be mounted on the second pipe mounting portion (524) of the supporter (500). However, the present disclosure is not limited to the above-described example. For example, the outlet pipe (420) may be directly fixed to the frame (100). For example, the outlet pipe (420) may be provided as an integral part with the supporter (500). For example, the outlet pipe (420) may be insert-molded with the supporter (500).

[0105] The outlet pipe (420) may include an outlet hole (421). Water may be discharged from the filter assembly (10) through the outlet hole (421). The outlet hole (421) may be connected to the water outlet hole (23) via a member (e.g., a hose, a pipe, etc.) for guiding purified water. Alternatively, the outlet hole (421) may be directly connected to the water outlet hole (23). The outlet hole (421) may be exposed to the outside of the frame (100).

[0106] A connecting pipe (430) may be provided to connect between a plurality of filter holders (200). The connecting pipe (430) may be provided to guide water between the plurality of filter holders (200). Water being filtered may be provided to flow along the connecting pipe (430). Here, the water being filtered may include water that has been filtered at least once but has not been completely filtered.

[0107] For example, a connecting pipe (430) can connect a first filter holder (200a) and a second filter holder (200b). The first filter holder (200a) can be connected to a first end (431) of the connecting pipe (430). The second filter holder (200b) can be connected to a second end (432) of the connecting pipe (430). Water flowing out of the first filter holder (200a) can be guided by the connecting pipe (430) and flow into the second filter holder (200b). The connecting pipe (430) can guide water passing through the first filter holder (200a) to the second filter holder (200b).

[0108] Meanwhile, if the filter assembly (10) includes one filter holder (200) and one filter (300), the connecting pipe (430) may be omitted. If the filter assembly (10) includes three filter holders (200) and three filters (300), two connecting pipes (430) may be provided.

[0109] The connecting pipe (430) is mountable to the frame (100). The connecting pipe (430) may be supported by the frame (100). For example, the connecting pipe (430) may be fixed to the frame (100) via the supporter (500). The connecting pipe (430) may be mounted to the third pipe mounting portion (525) of the supporter (500). However, the present disclosure is not limited to the above-described example. For example, the connecting pipe (430) may be directly fixed to the frame (100). For example, the connecting pipe (430) may be provided as an integral part with the supporter (500). For example, the connecting pipe (430) may be insert-molded with the supporter (500).

[0110] The filter holder (200) may be provided to be rotatable relative to the frame (100). The filter holder (200) may be rotatably supported by a supporter (500). The filter holder (200) may be rotatably coupled to the supporter (500). However, in some cases, the filter holder (200) may be rotatably coupled directly to the frame (100) without the supporter (500).

[0111] The filter holder (200) may be provided so that water can flow within it. The filter holder (200) may be provided so as to be in communication with the supporter (500). The filter holder (200) may be provided so as to be in communication with the inlet pipe (410), the outlet pipe (420), and / or the connecting pipe (430).

[0112] For example, the first filter holder (200a) may be connected to an inlet pipe (410) and a connection pipe (430). For example, the first filter holder (200a) may be connected to an inlet hole (411) of the inlet pipe (410) and a first end (431) of the connection pipe (430).

[0113] For example, the second filter holder (200b) may be connected to a connecting pipe (430) and an outlet pipe (420). For example, the second filter holder (200b) may be in communication with a second end (432) of the connecting pipe (430) and an outlet hole (421) of the outlet pipe (420).

[0114] However, the present disclosure is not limited to the above-described example, and when the filter assembly (10) includes one filter holder (200), the filter holder (200) may be connected to an inlet pipe (410) and an outlet pipe (420). At this time, the filter holder (200) may be connected to an inlet hole (411) of the inlet pipe (410) and an outlet hole (421) of the outlet pipe (420). In addition, the connecting pipe (430) may be omitted.

[0115] A filter (300) can be detachably mounted on the filter holder (200). While the filter (300) is mounted on the filter holder (200), the filter holder (200) can guide water toward the filter (300) or guide water out of the filter (300). While the filter (300) is mounted on the filter holder (200), the filter holder (200) can connect the filter (300) to the inlet pipe (410) and the outlet pipe (420).

[0116] For example, the filter holder (200) may include a head portion (210, 220) and a fixer portion (230). The head portion (210, 220) may form a flow path to allow water to flow. The fixer portion (230) may fix the filter (300) to the head portion (210, 220). The fixer portion (230) may be coupled to the lower portion of the head portion (210, 220). The head portion (210, 220) and the fixer portion (230) may be provided as separate components that can be coupled to each other, or may be provided as an integrated component. The head portion (210, 220) may include an outer holder (210) and an inner holder (220, see FIGS. 22 to 25) disposed inside the outer holder (210).

[0117] The filter holder (200) may include a protrusion (240). The protrusion (240) may protrude upward. The protrusion (240) may protrude toward the guide (120) of the frame (100). The protrusion (240) may extend toward the guide (120) of the frame (100). The protrusion (240) may be formed on the outer holder (210). The protrusion (240) may protrude from the outer holder (210). The protrusion (240) may have a shape that tapers upward. For example, the upper end (241) of the protrusion (240) may be provided as the highest point on the filter holder (200).

[0118] The protrusion (240) may be provided to be in contact with the guide (120) of the frame (100). The protrusion (240) may be provided to elastically deform the guide (120) of the frame (100). The protrusion (240) may press the guide (120) of the frame (100). The protrusion (240) may be pressed by the guide (120) of the frame (100). The protrusion (240) may be provided to interfere with the guide (120) of the frame (100). A detailed description thereof will be provided later.

[0119] Meanwhile, the protrusion (240) may be referred to as a guide pressure portion (240). The protrusion (240) may be referred to as a cam (240).

[0120] The filter (300) may be configured to filter water. The filter (300) may be configured to filter water supplied to the filter assembly (10). The filter (300) may filter raw water to produce purified water. The filter (300) may be configured to filter water supplied through the inlet pipe (410) and provide the filtered water to the outlet pipe (420).

[0121] The filter (300) may be detachably mounted on the filter holder (200). The filter (300) may be provided to be coupled to the filter holder (200) and communicate with the filter holder (200). The filter (300), when coupled to the filter holder (200), may be provided to communicate with the inlet pipe (410) and / or the outlet pipe (420). When the filter (300) is coupled to the filter holder (200), water supplied to the filter assembly (10) may pass through the filter (300).

[0122] The filter (300) may be provided to be rotatable by being mounted on the filter holder (200). The filter (300) may be provided to rotate together with the filter holder (200) while being coupled to the filter holder (200). Thus, the filter (300) may be provided to be rotatable with respect to the frame (100). The filter holder (200) may be provided to be rotatable with respect to the supporter (500).

[0123] The filter (300) may include a filter housing (310). The filter housing (310) may form the exterior of the filter (300). The filter housing (310) may be configured to accommodate a filter body (320, see FIGS. 24 and 25) to be described later.

[0124] An upper portion of the filter housing (310) may be inserted into the filter holder (200). The filter housing (310) may include an insertion portion (313). For example, the insertion portion (313) may protrude toward the inside of the filter holder (200). For example, the insertion portion (313) may include an approximately ring shape.

[0125] The filter housing (310) may include a fastening portion (312). The fastening portion (312) may be formed on the outside of the insertion portion (313). The fastening portion (312) may be formed around the insertion portion (313). The fastening portion (312) of the filter housing (310) may be detachably coupled to the fixing portion (230) of the filter holder (200). The fastening portion (312) may be fastened to a fastening hole (231, see FIGS. 22 and 23) formed in the fixing portion (230). For example, as a portion of the filter (300) rotates while being inserted into the filter holder (200), the fastening portion (312) may be engaged with the fastening hole (231).

[0126] The filter housing (310) may include a handle (314). The handle (314) may be provided at the bottom of the filter housing (310). A user may grip the handle (314) to mount the filter (300) on the filter holder (200) or to detach the filter (300) from the filter holder (200). The handle (314) of the filter (300) may correspond to a handle groove (1111) of the frame (100). The handle (314) of the filter (300) may be engaged with the handle groove (1111) of the frame (100).

[0127] The filter (300) may include a filter body (320, see FIGS. 24 and 25). The filter body (320) may be positioned inside the filter housing (310) to filter water flowing into the filter (300). The filter body (320) may remove foreign substances (e.g., bacteria, microorganisms, heavy metals, etc.) contained in the water.

[0128] For example, the filter body (320) may include at least one of a membrane filter, a ceramic filter, an activated carbon filter, and a composite filter. For example, the filter body (320) may include at least one of an ultrafiltration membrane, a nanofiltration membrane, and a reverse osmosis membrane. The ultrafiltration membrane may include micropores having a pore size of 0.005 micrometers or more and 0.5 micrometers or less, the nanofiltration membrane may include micropores having a pore size of 0.001 micrometers or more and less than 0.005 micrometers, and the reverse osmosis membrane may include micropores having a pore size of 0.0001 micrometers or more and less than 0.001 micrometers. However, the present disclosure is not limited to the above-described examples, and the filter body (320) may include various types of filters to purify raw water.

[0129] The filter (300) may include a filter outlet (330). The filter outlet (330) may be configured to discharge water that has passed through the filter body (320). At least a portion of the filter outlet (330) may be disposed inside the filter housing (310). The filter outlet (330) may be exposed to the outside of the filter housing (310).

[0130] The filter (300) may include an opening (311). The opening (311) may be formed between the filter housing (310) and the filter outlet (330). For example, the opening (311) may be formed between the inner surface of the insert (313) and the outer surface of the filter outlet (330). Water flowing into the filter (300) may pass through the opening (311) and flow into the filter body (320).

[0131] FIG. 10 is a drawing illustrating a state in which at least one filter holder is positioned at a first position in a filter assembly according to one embodiment. FIG. 11 is a drawing illustrating a state in which at least one filter holder is positioned at a second position in a filter assembly according to one embodiment. FIG. 12 is a drawing illustrating a state in which at least one filter holder is positioned at a third position in a filter assembly according to one embodiment.

[0132] Referring to FIGS. 10 to 12, the filter holder (200) is rotatable between a first position (P1) and a second position (P2). The filter holder (200) is switchable between the first position (P1) and the second position (P2). The filter holder (200) can be rotated from the first position (P1) to be positioned at the second position (P2). The filter holder (200) can be rotated from the second position (P2) to be positioned at the first position (P1). For example, the filter holder (200) is switchable between the first position (P1) accommodated in the frame (100) and the second position (P2) rotated from the first position (P1). The third position (P3) can be defined as any position between the first position (P1) and the second position (P2).

[0133] Meanwhile, referring to FIGS. 10 to 12, the first filter holder (200a) is illustrated as being in the first position (P1), but the present disclosure is not limited thereto. Each of the first filter holder (200a) and the second filter holder (200b) is rotatable between the first position (P1) and the second position (P2). As described above, the description of the filter holder (200) described below can be applied to both the first filter holder (200a) and the second filter holder (200b).

[0134] While the filter holder (200) is in the first position (P1), the filter (300) mounted on the filter holder (200) may be arranged to be accommodated in the accommodation space (110) of the frame (100). While the filter holder (200) is in the first position (P1), the filter holder (200) may arrange the filter (300) mounted on the filter holder (200) in one direction (D1, for example, the vertical direction (Z direction)) (see FIGS. 24 and 25). While the filter holder (200) is in the first position (P1), the filter (300) mounted on the filter holder (200) may be aligned approximately in the vertical direction (Z direction). While the filter holder (200) is in the first position (P1), the filter (300) mounted on the filter holder (200) may be arranged to filter water. That is, when the filter holder (200) is in the first position (P1), the filter (300) mounted on the filter holder (200) can be prepared in a usable state. In other words, when the filter holder (200) is in the first position (P1), the filter (300) mounted on the filter holder (200) can be prepared in a state capable of purifying raw water to produce purified water.

[0135] While the filter holder (200) is in the second position (P2), the filter (300) mounted on the filter holder (200) may be arranged to protrude from the receiving space (110) of the frame (100). While the filter holder (200) is in the first position (P1), the filter holder (200) may arrange the filter (300) mounted on the filter holder (200) to be inclined with respect to the one direction (D1, for example, the vertical direction (Z direction)). While the filter holder (200) is in the second position (P2), the filter (300) mounted on the filter holder (200) may be arranged to be inclined with respect to the approximately vertical direction (Z direction). For example, compared to when the filter holder (200) is in the first position (P1), when the filter holder (200) is in the second position (P2), the lower end of the filter (300) may be arranged to be lifted. While the filter holder (200) is in the second position (P2), the filter (300) mounted on the filter holder (200) may be provided to be replaceable. That is, when the filter holder (200) is in the second position (P2), the filter (300) mounted on the filter holder (200) may be provided to be replaceable.

[0136] An example of a process for replacing a filter (300) is described as follows. The filter holder (200) at the first position (P1) and the existing filter (300) mounted on the filter holder (200) can rotate. The filter holder (200) at the first position (P1) can rotate and be positioned at the second position (P2). The existing filter (300) mounted on the filter holder (200) at the second position (P2) can be provided in a replaceable state. The existing filter (300) mounted on the filter holder (200) at the second position (P2) can be replaced with a new filter (300). That is, a new filter (300) can be mounted on the filter holder (200) at the second position (P2). The filter holder (200) at the second position (P2) and the new filter (300) mounted on the filter holder (200) can rotate. The filter holder (200) at the second position (P2) can be rotated and positioned at the first position (P1). A new filter (300) mounted on the filter holder (200) at the first position (P1) can be provided in a usable state. The new filter (300) can be provided to purify raw water to provide purified water. Accordingly, a user can easily replace the filter (300) without inserting his / her hand into the interior of the frame (100) of the filter assembly (10) and / or the main body (20, see FIGS. 1 and 2). Consequently, maintenance (e.g., replacement, repair, etc.) of the filter (300) is easy.

[0137] Fig. 13 is a cross-sectional view taken along line A-A' shown in Fig. 10. Fig. 14 is a side cross-sectional view taken along line A-A' shown in Fig. 10. To facilitate clear understanding, some of the internal configuration of the filter holder (200) and the internal configuration of the filter (300) may be omitted. In addition, any content that overlaps with the above-described content may be omitted.

[0138] Referring to FIGS. 13 and 14, while the filter holder (200) is in the first position (P1), the guide (120) of the frame (100) may be provided in the first state (S1). While the filter holder (200) is in the first position (P1), the guide (120) may not be deformed by the protrusion (240). While the filter holder (200) is in the first position (P1), the protrusion (240) may not press the guide (120).

[0139] While the filter holder (200) is in the first position (P1), the protrusion (240) can be positioned to face the upper wall (112) of the frame (100). While the filter holder (200) is in the first position (P1), the upper end (241) of the protrusion (240) can be positioned to face upward. While the filter holder (200) is in the first position (P1), the protrusion (240) can be positioned in front of the guide (120). For example, while the filter holder (200) is in the first position (P1), the protrusion (240) can be provided in front of the second extension (122) of the guide (120). For example, while the filter holder (200) is in the first position (P1), the protrusion (240) can contact the front end of the second extension (122) of the guide (120).

[0140] Fig. 15 is a cutaway perspective view taken along line B-B' shown in Fig. 11. Fig. 16 is a side cross-sectional view taken along line B-B' shown in Fig. 11. To facilitate clear understanding, some of the internal configuration of the filter holder (200) and the internal configuration of the filter (300) may be omitted. In addition, any content that overlaps with the above-described content may be omitted.

[0141] Referring to FIGS. 15 and 16, while the filter holder (200) is in the second position (P2), the guide (120) of the frame (100) may be provided in the first state (S1). While the filter holder (200) is in the second position (P2), the guide (120) may not be deformed by the protrusion (240). While the filter holder (200) is in the second position (P2), the protrusion (240) may not press the guide (120).

[0142] While the filter holder (200) is in the second position (P2), the protrusion (240) can be positioned to face the rear wall (115) of the frame (100). While the filter holder (200) is in the second position (P2), the upper end (241) of the protrusion (240) can be positioned to face rearward. While the filter holder (200) is in the second position (P2), the protrusion (240) can be positioned below the guide (120). For example, while the filter holder (200) is in the second position (P2), the protrusion (240) can be provided below the first extension (121) of the guide (120). For example, while the filter holder (200) is in the second position (P2), the protrusion (240) can contact the lower portion of the first extension (121) of the guide (120).

[0143] Referring to FIGS. 13 to 16, when the filter holder (200) is in the first position (P1), the guide (120) may be provided in the first state (S1), and when the filter holder (200) is in the second position (P2), the guide (120) may be provided in the first state (S1). The guide (120) may be provided in approximately the same state (S1) in each case where the filter holder (200) is in the first position (P1) and in the case where the filter holder (200) is in the second position (P2). The angle (a, see FIG. 14) between the first extension (121) and the second extension (122) while the filter holder (200) is in the first position (P1) may be approximately equal to the angle (b, see FIG. 16) between the first extension (121) and the second extension (122) while the filter holder (200) is in the second position (P2).

[0144] Fig. 17 is a cut-away perspective view taken along the line C-C' shown in Fig. 12. Fig. 18 is a side cross-sectional view taken along the line C-C' shown in Fig. 12. Fig. 19 is a cut-away perspective view taken along the line C-C' shown in Fig. 12, and is a cut-away perspective view taken from a different direction from Fig. 17. To facilitate clear understanding, some of the internal configuration of the filter holder (200) and the internal configuration of the filter (300) may be omitted. In addition, content that overlaps with the above-described content may be omitted.

[0145] Referring to FIGS. 17 to 19, while the filter holder (200) is in a third position (P3) between the first position (P1) and the second position (P2), the guide (120) of the frame (100) can be provided in a second state (S2) that is deformed from the first state (S1). While the filter holder (200) is in the third position (P3), the guide (120) of the frame (100) can be provided in a second state (S2) that is deformed from the first state (S1) by being pressed by the protrusion (240). While the filter holder (200) is in the third position (P3), the guide (120) can be in a state that is deformed by the protrusion (240). While the filter holder (200) is in the third position (P3), the protrusion (240) can press the guide (120). As the protrusion (240) presses the guide (120), the guide (120) can be elastically deformed. While the filter holder (200) is at the third position (P3), a portion of the guide (120) can be bent. While the filter holder (200) is at the third position (P3), the guide (120) can be lifted upward by the protrusion (240). While the filter holder (200) is at the third position (P3), the free end (1202) of the guide (120) can enter toward the third slit portion (1233, see FIG. 7).

[0146] In summary, while the filter holder (200) is at a third position (P3) between the first position (P1) and the second position (P2), the protrusion (240) may be arranged to press the guide (120) upward to deform the guide (120). While the filter holder (200) is at a third position (P3) between the first position (P1) and the second position (P2), the guide (120) may be arranged to have an elastic restoring force to press the protrusion (240) downward.

[0147] Fig. 20 schematically illustrates a process in which a filter holder according to one embodiment is switched from a third position to a first position. Fig. 21 schematically illustrates a process in which a filter holder according to one embodiment is switched from a third position to a second position.

[0148] Referring to FIGS. 20 and 21, the guide (120) may be arranged to guide the filter holder (200) at the third position (P3) between the first position (P1) and the second position (P2) to the first position (P1) or the second position (P2). The guide (120) may be elastically deformed by the protrusion (240) to guide the filter holder (200) so that the filter holder (200) is positioned at the first position (P1) or the second position (P2). The guide (120) may press the protrusion (240) of the filter holder (200) while switching from the second state (S2) to the first state (S1), and may guide the filter holder (200) to the first position (P1) or the second position (P2). That is, the guide (120) can prevent the filter holder (200) from being maintained in the third position (P3). Accordingly, the filter (300) mounted on the filter holder (200) can also be provided in a usable or replaceable state. The filter (300) may not be provided in an ambiguous state.

[0149] Referring to FIGS. 20 and 21, while the filter holder (200) is at the third position (P3), the guide (120) can be provided in the second state (S2). While the filter holder (200) is at the third position (P3), the protrusion (240) can press the guide (120), and the guide (120) can be deformed by the protrusion (240). The guide (120) can be provided to be elastically deformable. The guide (120) can have elastic restoring force. Accordingly, the guide (120) can be provided to press the protrusion (240) while being restored to the original position (and / or state), and the position of the filter holder (200) can be guided. That is, the guide (120) can be provided to press the protrusion (240) by being elastically deformed by the protrusion (240). The guide (120) may be arranged to pressurize the protrusion (240) while transitioning from the second state (S2) to the first state (S1). As a result, the filter holder (200) can be easily guided to the first position (P1) or the second position (P2) by the guide (120).

[0150] Referring to FIG. 20, the filter holder (200) can rotate from a third position (P3) to a first position (P1). The filter holder (200) can rotate in a first rotational direction (R1) from the third position (P3) to move to the first position (P1). The filter holder (200) can rotate in the first rotational direction (R1) with respect to the frame (100). The filter holder (200) can be rotatably supported by a supporter (500) fixed to the frame (100).

[0151] As the filter holder (200) rotates in the first rotational direction (R1) from the third position (P3), the protrusion (240) may be arranged not to press the guide (120). As the force that the protrusion (240) applies to the guide (120) is removed, the guide (120) may be switched from the second state (S2) to the first state (S1). The guide (120) may be switched from the second state (S2) to the first state (S1) by elastic restoring force. The guide (120) may return to the first state (S1) from the second state (S2). That is, the guide (120) may be deformed and then return to its original shape. The guide (120) may press the filter holder (200) while returning from the second state (S2) to the first state (S1). The guide (120) can elastically bias the filter holder (200). For example, the guide (120) can press the filter holder (200) downward (F).

[0152] Accordingly, the filter holder (200) can be more easily switched from the third position (P3) to the first position (P1) by the guide (120). Similarly, the filter holder (200) can be more easily switched from the second position (P2) to the first position (P1) by the guide (120). That is, the user can switch the filter holder (200) to the first position (P1) without applying great force. The user can switch the filter (300) mounted on the filter holder (200) to a usable state without applying great force. In addition, the user can recognize that the filter holder (200) is guided by the guide (120). Accordingly, the user can clearly recognize that the filter (300) mounted on the filter holder (200) is in a usable state as the filter holder (200) moves to the first position (P1).

[0153] Referring to FIG. 21, the filter holder (200) can rotate from a third position (P3) to a second position (P2). The filter holder (200) can rotate in a second rotational direction (R2) from the third position (P3) to move to the second position (P2). The filter holder (200) can rotate in a second rotational direction (R2) with respect to the frame (100). The filter holder (200) can be rotatably supported on a supporter (500) fixed to the frame (100). The second rotational direction (R2) can be opposite to the first rotational direction (R1).

[0154] As the filter holder (200) rotates in the second rotational direction (R2) from the third position (P3), the protrusion (240) may be arranged not to press the guide (120). As the force exerted by the protrusion (240) on the guide (120) is removed, the guide (120) may be switched from the second state (S2) to the first state (S1). The guide (120) may be switched from the second state (S2) to the first state (S1) by elastic restoring force. The guide (120) may return to the first state (S1) from the second state (S2). That is, the guide (120) may be deformed and then return to its original shape. The guide (120) may press the filter holder (200) while returning from the second state (S2) to the first state (S1). The guide (120) can elastically bias the filter holder (200). For example, the guide (120) can press the filter holder (200) downward (F).

[0155] Accordingly, the filter holder (200) can be more easily switched from the third position (P3) to the second position (P2) by the guide (120). Similarly, the filter holder (200) can be more easily switched from the first position (P1) to the second position (P2) by the guide (120). That is, the user can switch the filter holder (200) to the second position (P2) without applying great force. The user can switch the filter (300) mounted on the filter holder (200) to a replaceable state without applying great force. In addition, the user can recognize that the filter holder (200) is guided by the guide (120). Accordingly, the user can clearly recognize that the filter (300) mounted on the filter holder (200) is in a replaceable state as the filter holder (200) moves to the second position (P2).

[0156] Typically, when replacing a filter, the filter mounted in the filter holder can be rotated to become replaceable. However, if the filter holder does not have a fixing (catching) structure (e.g., a hook), the filter holder and the filter may become separated or water may leak between them due to shaking during filter replacement. To address this, if the filter holder is equipped with a fixing (catching) structure, a large force may be required to rotate the filter. This makes it difficult to rotate and replace the filter. Furthermore, if the filter is not properly installed, it may interfere with other components of the product, such as a water purifier, and the filter's efficiency may be reduced. However, it is difficult for users to clearly determine whether the filter is properly installed.

[0157] In contrast, according to the present disclosure, the filter assembly (10) may include a protrusion (240) of the filter holder (200) and a guide (120) of the frame (100). The protrusion (240) and the guide (120) may be provided in a contactable state. The guide (120) may guide the position of the filter holder (200) by being elastically deformed by the protrusion (240). Specifically, the guide (120) may press the filter holder (200) by being elastically deformed. The guide (120) may press the filter holder (200) while returning from the second state (S2) to the first state (S1). As a result, separation of the filter holder (200) and the filter (300) and leakage between the filter holder (200) and the filter (300) may be reduced and / or prevented. The guide (120) is a structure that presses the filter holder (200), and thus does not impede the rotation of the filter (300). The user can easily rotate the filter (300) without exerting much force. In addition, the filter holder (200) can be guided from the third position (P3) to the first position (P1) or the second position (P2) by the guide (120). The guide (120) can guide the filter holder (200) to the first position (P1) or the second position (P2) by bending and straightening. That is, the guide (120) can help the filter holder (200) to be at the first position (P1) or the second position (P2) while preventing the filter holder (200) from being maintained at the third position (P3). As a result, the user can easily recognize that the filter holder (200) is guided by the guide (120). The user can clearly recognize whether the filter (300) mounted on the filter holder (200) is usable or replaceable. The user can clearly recognize whether the filter (300) is properly installed.

[0158] Fig. 22 is a cross-sectional view showing an example of a state before a filter is attached to a filter holder. Fig. 23 is an enlarged view of a portion of Fig. 22. Fig. 24 is a cross-sectional view showing an example of a state in which a filter is attached to a filter holder. Fig. 25 is an enlarged view of a portion of Fig. 23.

[0159] Referring to FIGS. 22 to 25, an example in which a filter assembly (10) includes two filter holders (200a, 200b) and two filters (300a, 300b) will be described. The filter assembly (10) may include a first filter holder (200a) and a second filter holder (200b). The filter assembly (10) may include a first filter (300a) mountable to the first filter holder (200a) and a second filter (300b) mountable to the second filter holder (200b). As described above, when there is no distinction between “first” and “second,” the description of the filter holder (200) may apply to both each of the filter holders (200a, 200b), and the description of the filter (300) may apply to both each of the filters (300a, 300b).

[0160] Referring to FIGS. 22 and 23, the filter holder (200) may include an outer holder (210) and an inner holder (220) positioned inside the outer holder (210). The filter holder (200) may include a fixing part (230) coupled to the lower portions of the outer holder (210) and the inner holder (220).

[0161] For example, the outer holder (210) may include a first communication hole (212), a second communication hole (215), a first connection path (213), and a second connection path (216), which will be described later. The outer holder (210) may include an inlet connection part (211) and an outlet connection part (214).

[0162] For example, the inner holder (220) may include a first holder euro (221) and a second holder euro (222), which will be described later.

[0163] The filter holder (200) may include an inlet connection portion (211) and an outlet connection portion (214). The inlet connection portion (211) and the outlet connection portion (214) may be rotatably coupled to a supporter (500). However, the present invention is not limited thereto, and the inlet connection portion (211) and the outlet connection portion (214) may also be rotatably coupled to a frame (100) without a supporter (500). The inlet connection portion (211) and the outlet connection portion (214) may be formed on an outer holder (210).

[0164] The filter holder (200) may include a first communication hole (212). The first communication hole (212) may be in communication with the inlet connection part (211). The first communication hole (212) may receive water flowing into the filter holder (200). The first communication hole (212) may be maintained in an open state. The first communication hole (212) may be formed in the outer holder (210).

[0165] For example, the first communication hole (212) of the first filter holder (200a) may be opened toward the inlet pipe (410). The first communication hole (212) of the first filter holder (200a) may be provided to receive water flowing along the inlet pipe (410). The first communication hole (212) of the first filter holder (200a) may be provided to receive water from the inlet pipe (410).

[0166] For example, the first communication hole (212) of the second filter holder (200b) may be opened toward the second end (432) of the connecting pipe (430). The first communication hole (212) of the second filter holder (200b) may be provided to receive water flowing along the connecting pipe (430). The first communication hole (212) of the second filter holder (200b) may be provided to receive water from the connecting pipe (430).

[0167] The filter holder (200) may include a first holder passage (221). The first holder passage (221) may be configured to guide water passing through the first communication hole (212) toward the filter (300). For example, the first holder passage (221) may extend approximately in a vertical direction (Z direction). The first holder passage (221) may be formed in the inner holder (220).

[0168] The filter holder (200) may include a first connecting passage (213). The first connecting passage (213) may be provided to connect the first communication hole (212) and the first holder passage (221). The first connecting passage (213) may be formed in the outer holder (210).

[0169] The filter holder (200) may include an inlet valve (250). The inlet valve (250) may be configured to open and close the first holder passage (221). When the filter (300) is not mounted on the filter holder (200), the inlet valve (250) may close the first holder passage (221) (see FIGS. 22 and 23). While the filter (300) is mounted on the filter holder (200), the inlet valve (250) may be configured to open the first holder passage (221) by being pressurized by the filter (300) (see FIGS. 24 and 25). The inlet valve (250) may be referred to as a first valve (250).

[0170] For example, the inlet valve (250) may include a valve body (251) and a spring (252) configured to elastically bias the valve body (251). The insertion portion (313) of the filter (300) may pressurize the valve body (251), thereby compressing the spring (252). When the insertion portion (313) of the filter (300) does not pressurize the valve body (251), the valve body (251) may be elastically biased by the spring (252) to block the first holder passage (221).

[0171] The filter holder (200) may include a second holder passage (222). The second holder passage (222) may be provided to guide water passing through the filter (300). The second holder passage (222) may be provided to guide water filtered by the filter (300). The second holder passage may guide the water toward the second communication hole (215). For example, the second holder passage (222) may extend approximately in a vertical direction (Z direction). The second holder passage (222) may be formed in the inner holder (220).

[0172] The filter holder (200) may include a second communication hole (215). The second communication hole (215) may be provided to discharge water guided by the second holder path (222). The second communication hole (215) may be in communication with the outlet connection (214). The second communication hole (215) may be formed in the outer holder (210).

[0173] For example, the second communication hole (215) of the first filter holder (200a) may be provided to discharge water toward the first end (431) of the connecting pipe (430). The second communication hole (215) of the first filter holder (200a) may be provided to transfer water guided by the second holder flow path (222) of the first filter holder (200a) to the connecting pipe (430).

[0174] For example, the second communication hole (215) of the second filter holder (200b) may be provided to discharge water toward the discharge pipe (420). The second communication hole (215) of the second filter holder (200b) may be provided to transfer water guided by the second holder path (222) of the second filter holder (200b) to the discharge pipe (420).

[0175] The filter holder (200) may include a second connecting passage (216). The second connecting passage (216) may be provided to connect the second communication hole (215) and the second holder passage (222). The second connecting passage (216) may be formed in the outer holder (210).

[0176] The filter holder (200) may include an outlet valve (260). The outlet valve (260) may be configured to open and close the second communication hole (215). When water does not flow inside the filter holder (200), the outlet valve (260) may close the second communication hole (215) (see FIGS. 22 and 23). When water flows toward the second communication hole (215) while the filter (300) is mounted on the filter holder (200), the outlet valve (260) may be configured to open the second communication hole (215) (see FIGS. 24 and 25). The outlet valve (260) may open the second communication hole (215) due to the pressure of the water flowing toward the second communication hole (215). The outlet valve (260) may be referred to as a second valve (260).

[0177] For example, the outlet valve (260) may include a valve body (261) and a spring (262) configured to elastically bias the valve body (261). Water may pressurize the valve body (261) as it flows toward the second communication hole (215), thereby compressing the spring (262). When water does not flow toward the second communication hole (215), the valve body (261) may be elastically biased by the spring (262) to block the second communication hole (215).

[0178] Referring to FIGS. 24 and 25, the filter (300) can be coupled to the filter holder (200) along the first direction (D1). The filter (300) can be inserted into the filter holder (200) along the first direction (D1) and connected to the inlet pipe (410), the outlet pipe (420), and / or the connecting pipe (430).

[0179] For example, the first filter (300a) may be inserted into the first filter holder (200a) along the first direction (D1) and may be provided to be connected to the inlet pipe (410). For example, the second filter (300b) may be inserted into the second filter holder (200b) along the first direction (D1) and may be provided to be connected to the outlet pipe (420). For example, a connecting pipe (430) may be provided between the first filter (300a) and the second filter (300b).

[0180] For example, the second filter (300b) may be configured to filter water that has passed through the first filter (300a). For example, the filter body (320) of the second filter (300b) may filter foreign substances having a size smaller than that of foreign substances filtered by the filter body (320) of the first filter (300a).

[0181] For example, the second filter holder (200b) may be arranged parallel to the first filter holder (200a) in a second direction (D2) intersecting the first direction (D1). For example, the second filter (300b) may be arranged parallel to the first filter (300a) in a second direction (D2) intersecting the first direction (D1). For example, the first direction (D1) may be a vertical direction, and the second direction (D2) may be a horizontal direction.

[0182] Next, with reference to Fig. 25, an example of water flow will be described. For reference, to facilitate clear understanding, water before passing through the filter body is depicted with a dashed arrow, and water passing through the filter body is depicted with a solid arrow. Meanwhile, in Fig. 25, the first filter holder (200a) and the first filter (300a) are depicted in an enlarged manner, but the following description can of course be applied to the second filter holder (200b) and the second filter (300b). In other words, the following description can be understood as a description of each filter holder (200) and each filter (300).

[0183] Water can be introduced into the filter holder (200) through a pipe connected to the inlet connection (211). For example, in the case of the first filter holder (200a), water can be introduced through an inlet pipe (410). For example, in the case of the second filter holder (200b), water can be introduced through a connection pipe (430).

[0184] Water can pass through the open first communication hole (212). Water passing through the first communication hole (212) can enter the first holder passage (221) through the first connection passage (213). While the filter (300) is coupled to the filter holder (200), the inlet valve (250) can be pressed by the filter (300) inserted into the filter holder (200). The inlet valve (250) can open the first holder passage (221). Water guided by the first connection passage (213) can pass through the open first holder passage (221). Water passing through the first holder passage (221) can flow to the filter (300). Water heading to the filter (300) can pass through the opening (311) of the filter (300) and enter between the filter body (320) and the filter housing (310). Water entering between the filter body (320) and the filter housing (310) can be purified as it passes through the filter body (320).

[0185] Water passing through the filter body (320) can be guided by a first filter passage (321). The first filter passage (321) can be formed inside the filter body (320). Water passing through the first filter passage (321) can be guided by a second filter passage (331). The second filter passage (331) can be formed inside the filter outlet (330). Water guided by the second filter passage (331) can flow out through the filter outlet (330). Water flowing out through the filter outlet (330) can flow out through the second holder passage (222). Water passing through the second holder passage (222) can flow toward the first communication hole (215) through the second connection passage (216). While water flows toward the second communication hole (215), the outlet valve (260) can be pressed by the water pressure. The outlet valve (260) can open the second communication hole (215). The water guided by the second connecting passage (216) can pass through the opened second communication hole (215).

[0186] Water passing through the second communication hole (215) can flow out toward a pipe connected to the outlet connection (214). For example, the first filter holder (200a) can flow out water into a connection pipe (430). For example, the second filter holder (200b) can flow out water into an outlet pipe (420).

[0187] For example, water passing through the first holder passage (221) and the second holder passage (222) may be arranged to flow approximately along the first direction (D1). For example, water passing through the first communication hole (212) and the second communication hole (215) may be arranged to flow along the second direction (D2) intersecting the first direction (D1).

[0188] Fig. 26 is a perspective view illustrating a refrigerator according to one embodiment.

[0189] Referring to Fig. 26, an example in which a filter assembly (10) is applied to a refrigerator (2) will be described. However, the refrigerator illustrated in Fig. 26 is merely an example of a product to which the filter assembly (10) is applied, and as described above, the filter assembly (10) may be provided in various products requiring water filtration. In addition, the contents of the filter assembly (10) described with reference to Figs. 1 to 25 can also be applied to the filter assembly (10) of the refrigerator (2) illustrated in Fig. 26.

[0190] Referring to FIG. 26, a refrigerator (2) according to one embodiment of the present disclosure may include a main body, a storage compartment (41, 42, 43) formed inside the main body, a door (31, 32, 33, 34) for opening and closing the storage compartment (41, 42, 43), and a cold air supply device (not shown) for supplying cold air to the storage compartment (41, 42, 43).

[0191] The main body may include an inner case (11) forming a storage room (41, 42, 43), an outer case (12) coupled to the outside of the inner case (11) to form an exterior, and an insulating material (not shown) provided between the inner case (11) and the outer case (12) to insulate the storage room (41, 42, 43).

[0192] The storage rooms (41, 42, 43) can be divided into a plurality of sections by at least one bulkhead (15, 16). For example, the storage rooms (41, 42, 43) can be divided into a plurality of sections by a horizontal bulkhead (15) and a vertical bulkhead (16). The storage rooms (41, 42, 43) can be divided into an upper storage room (41) and lower storage rooms (42, 43) by the horizontal bulkhead (15). The lower storage rooms (42, 43) can be divided into a lower left storage room (42) and a lower right storage room (43) by the vertical bulkhead (16).

[0193] The upper storage compartment (41) can be used as a refrigerator, and the lower storage compartments (42, 43) can be used as a freezer. An ice maker for making ice can be provided in either of the lower storage compartments (42, 43). However, the division and use of the storage compartments (41, 42, 43) as described above are merely examples, and the present disclosure is not limited thereto.

[0194] In addition, the refrigerator (2) may be of the SBS (Side By Side) type in which the storage compartment is divided into the left and right sides by vertical partitions, the FDR (French Door Refrigerator) type in which the storage compartment is divided into an upper refrigerator compartment and a lower refrigerator compartment by horizontal partitions, or a single-door type having one storage compartment and one door.

[0195] Inside the storage room (41, 42, 43), a shelf (51) for placing food and a storage container (52) for storing food can be provided.

[0196] The cold air supply device can generate cold air by using a cooling cycle of compressing, condensing, expanding, and evaporating a refrigerant, and supply the generated cold air to a storage room (41, 42, 43).

[0197] The upper storage compartment (41) can be opened and closed by a pair of doors (31, 32). The doors (31, 32) can be rotatably connected to the main body by an upper hinge (35) and a middle hinge (36). A filler (not shown) can be provided on one of the pair of doors (31, 32) to prevent cold air from leaking out of the storage compartment (41) between the pair of doors (31, 32) when the pair of doors (31, 32) is closed.

[0198] The lower left storage compartment (42) can be opened and closed by a door (33), and the lower right storage compartment (43) can be opened and closed by a door (34). The doors (33) and (34) can be rotatably connected to the main body by a middle hinge (36) and a lower hinge (37), respectively.

[0199] A gasket (38) that adheres to the front of the main body to seal the storage compartment (41, 42, 43) may be provided on the back surface of the door (31, 32, 33, 34). The door (31, 32, 33, 34) may include a door basket (39) having a door storage space for storing food. The door basket (39) may be provided on the back surface of the door (31, 32, 33, 34).

[0200] The refrigerator (2) may include a filter assembly (10). The filter assembly (10) may be provided on the back surface of the door (31, 32, 33, 34). The filter assembly (10) may be covered by a cover (19). While the cover (19) is separated from the door (31, 32, 33, 34), the filter assembly (10) can be entered. While the cover (19) is separated from the door (31, 32, 33, 34), at least one filter (300) of the filter assembly (10) can be replaced. However, unlike as illustrated in FIG. 26, the filter assembly (10) may be provided in the storage compartment (41, 42, 43) rather than the door (31, 32, 33, 34). As long as the filter assembly (10) is placed on a water passage and can filter water, the shape and / or placement of the filter assembly (10) is not limited.

[0201] A filter assembly (10) according to one embodiment may include a frame (100); an inlet pipe (410) mountable to the frame and configured to allow water to flow in; an outlet pipe (420) mountable to the frame and configured to allow water to flow out; a filter (300) configured to filter water flowing in through the inlet pipe (410) and provide the filter to the outlet pipe (420); and a filter holder (200) to which the filter (300) is detachably mounted and configured to connect the filter (300) to the inlet pipe (410) and the outlet pipe (420). The filter holder (200) is rotatable between a first position (P1) and a second position (P2). For example, the filter holder (200) is rotatable between a first position (P1) for arranging a filter (300) mounted on the filter holder (200) in a substantially vertical direction (Z direction) and a second position (P2) for arranging a filter (300) mounted on the filter holder (200) at an angle with respect to the substantially vertical direction (Z direction). The filter holder (200) may include a protrusion (240) that protrudes upward. The frame (100) may include an elastically deformable guide (120). The guide (120) of the frame (100) may be arranged in a first state (S1) while the filter holder (200) is in the first position (P1) or the second position (P2). The guide (120) of the frame (100) can be provided in a second state (S2) that is deformed from the first state (S1) by being pressed by the protrusion (240) while the filter holder (200) is in a third position (P3) between the first position (P1) and the second position (P2).

[0202] The above guide (120) presses the protrusion (240) of the filter holder (200) while switching from the second state (S2) to the first state (S1), and can guide the filter holder (200) to the first position (P1) or the second position (P2).

[0203] The frame (100) may include at least one wall (111, 112, 113, 114 and / or 115) for forming an accommodation space (110). While the filter holder (200) is at the first position (P1), the filter (300) mounted on the filter holder (200) may be arranged to be accommodated in the accommodation space (110) of the frame. While the filter holder (200) is at the second position (P2), the filter (300) mounted on the filter holder (200) may be arranged to protrude from the accommodation space (110) of the frame and be replaceable.

[0204] The above guide (120) may include a cantilever shape having a fixed end (1201) and a free end (1202).

[0205] The above guide (120) may include a first extension (121) that protrudes toward the protrusion (240); and a second extension (122) that is bent upwardly from the first extension and is movable upward by the protrusion (240).

[0206] A first angle (a) between the first extension and the second extension while the filter holder is in the first position (P1) may be equal to a second angle (b) between the first extension and the second extension while the filter holder is in the second position (P2).

[0207] While the filter holder is in the second position (P2), the lower part of the filter (300) can be provided to be lifted.

[0208] The filter holder (200) may include a communication hole (212) that is open toward the inlet pipe (410) and is provided to receive water flowing along the inlet pipe; a holder flow path (221) that is provided to guide water passing through the communication hole (212) toward the filter; and a valve (250) that is provided to open and close the holder flow path (221).

[0209] The above valve (250) may be provided to open the holder passage (221) by being pressurized by the filter (300) while the filter (300) is mounted on the filter holder (200).

[0210] The above filter holder (200) may include a holder passage (222) provided to guide water passing through the filter (300); a communication hole (215) provided to discharge water guided by the holder passage (222); and a valve (260) provided to open and close the communication hole (215).

[0211] The above valve (260) may be provided to open the communication hole (215) by the pressure of water flowing toward the communication hole (215) while the filter (300) is mounted on the filter holder (200).

[0212] The filter holder (200) may include a first communication hole (212) provided to receive water flowing along the inlet pipe (410); a first holder flow path (221) provided to guide water passing through the first communication hole toward the filter; a first valve (250) provided to open and close the first holder flow path; a second holder flow path (222) provided to guide water passing through the filter; a second communication hole (215) provided to discharge water guided by the second holder flow path; and a second valve (260) provided to open and close the second communication hole.

[0213] The filter holder may include an outer holder (210) and an inner holder (220). The outer holder (210) may include a first communication hole (212), a second communication hole (215), a first connection path (213) provided to connect the first communication hole and the first holder path, and a second connection path (216) provided to connect the second communication hole and the second holder path. The inner holder (220) may be disposed inside the outer holder (210) and may include the first holder path (221) and the second holder path (222).

[0214] Water passing through the first holder passage (221) and the second holder passage (222) may be arranged to flow along a first direction (D1). Water passing through the first communication hole (212) and the second communication hole (215) may be arranged to flow along a second direction (D2) intersecting the first direction.

[0215] The filter may be a first filter (300a) that is inserted into the filter holder along a first direction and is provided to be connected to the inlet pipe (410). The filter assembly (10) may include a second filter (300b) that is arranged parallel to the first filter in a second direction intersecting the first direction and is provided to be connected to the outlet pipe (420). The filter (300b) may be provided to filter water that has passed through the first filter. The filter assembly (10) may further include a connecting pipe (430) that is provided between the first filter and the second filter.

[0216] A filter assembly (10) according to one embodiment may include a frame (100); a supporter (500) fixed to the frame; an inlet pipe (410) mounted on one side of the supporter (500) and configured to allow water to flow in; an outlet pipe (420) mounted on the other side of the supporter (500) and configured to allow water to flow out; a filter holder (200) rotatably supported by the supporter (500) and configured to communicate with the inlet pipe (410) and the outlet pipe (420); and a filter (300) detachably mounted to the filter holder and configured to communicate with the filter holder and configured to filter water. The filter holder may include a protrusion (240) protruding upward. The frame may include a cantilever-shaped guide (120) that is elastically deformable by the protrusion (240).

[0217] The filter holder (200) is switchable between a first position (P1) accommodated in the frame and a second position (P2) rotated from the first position. While the filter holder (200) is at a third position (P3) between the first position and the second position, the protrusion (240) may be arranged to press the guide (120) upward to deform the guide (120). While the filter holder (200) is at a third position (P3) between the first position and the second position, the guide (120) may have an elastic restoring force that presses the protrusion (240) downward.

[0218] The filter holder (200) is switchable between a first position (P1) accommodated in the frame and a second position (P2) rotated from the first position. While the filter holder (200) is in the first position (P1), a filter mounted on the filter holder may be configured to filter water. While the filter holder (200) is in the second position (P2), a filter mounted on the filter holder may be configured to be replaceable.

[0219] The filter holder (200) may include a first communication hole (212) provided to receive water from the inlet pipe; a first holder flow path (221) provided to guide water passing through the first communication hole toward the filter; a first valve (250) provided to open and close the first holder flow path; a second holder flow path (222) provided to guide water filtered by the filter; a second communication hole (215) provided to deliver water guided by the second holder flow path to the outlet pipe; and a second valve (260) provided to open and close the second communication hole.

[0220] The above first communication hole (212) can be opened toward the inlet pipe (410).

[0221] According to the idea of ​​the present disclosure, replacement and / or repair of filters can be facilitated, and user convenience can be increased.

[0222] According to the present invention, it is possible to prevent the filter from being detached from the filter holder. As a result, leakage between the filter and the filter holder can be reduced and / or prevented.

[0223] According to the invention, a user can easily identify whether a filter is replaceable or usable.

[0224] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0225] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Frame; An inlet pipe that can be mounted on the above frame and is provided to allow water to flow in; A drain pipe that can be mounted on the above frame and is provided to allow water to drain; A filter provided to filter water flowing in through the inlet pipe and provide it to the outlet pipe; and A filter holder in which the filter is detachably mounted and is provided to connect the filter to the inlet pipe and the outlet pipe, the filter holder being rotatable between a first position for vertically arranging the filter mounted on the filter holder and a second position for arranging the filter mounted on the filter holder at an angle with respect to the vertical direction; The above filter holder includes a protrusion that protrudes upward, A filter assembly including a guide, wherein the frame is an elastically deformable guide, and is provided in a first state while the filter holder is in the first position or the second position, and is provided in a second state deformed from the first state by being pressed by the protrusion while the filter holder is in a third position between the first position and the second position.

2. In paragraph 1, A filter assembly in which the guide presses the protrusion of the filter holder while switching from the second state to the first state, and guides the filter holder to the first position or the second position.

3. In paragraph 1, The above frame includes at least one wall for forming a receiving space, While the filter holder is in the first position, the filter mounted on the filter holder is arranged to be accommodated in the accommodation space of the frame, A filter assembly in which a filter mounted on the filter holder is provided in a replaceable state by protruding from the receiving space of the frame while the filter holder is in the second position.

4. In paragraph 1, The above guide is, A filter assembly comprising a cantilever shape having a fixed end and a free end.

5. In paragraph 1, The above guide is, a first extension protruding toward the above protrusion; and A filter assembly comprising a second extension portion that is bent upwardly from the first extension portion and is movable upward by the protrusion.

6. In paragraph 5, The first angle between the first extension and the second extension while the filter holder is in the first position is, A filter assembly having a second angle equal to the second angle between the first extension and the second extension while the filter holder is in the second position.

7. In paragraph 1, While the above filter holder is in the second position, A filter assembly in which the lower part of the above filter is provided to be lifted.

8. In paragraph 1, The above filter holder, A communication hole that is open toward the inlet pipe and is provided to receive water flowing along the inlet pipe; A holder euro provided to guide water passing through the above-mentioned communication hole toward the above-mentioned filter; and A filter assembly comprising a valve configured to open and close the holder euro.

9. In paragraph 8, The above valve, A filter assembly provided so as to open the holder passage by being pressurized by the filter while the filter is mounted in the filter holder.

10. In paragraph 1, The above filter holder, A holder euro provided to guide water passing through the above filter; A flue hole provided to drain water guided by the holder euro; and A filter assembly including a valve configured to open and close the above-mentioned communication hole.

11. In paragraph 10, The above valve, A filter assembly provided so that the communication hole is opened by the pressure of water flowing toward the communication hole while the filter is mounted on the filter holder.

12. In paragraph 1, The above filter holder, A first communication hole provided to receive water flowing along the above inlet pipe; A first holder duct provided to guide water passing through the first communication hole toward the filter; A first valve provided to open and close the first holder euro; A second holder euro provided to guide water passing through the above filter; A second communication hole provided to discharge water guided by the second holder euro; and A filter assembly including a second valve configured to open and close the second communication hole.

13. In paragraph 12, The above filter holder, An outer holder including the first communication hole, the second communication hole, a first connection path provided to connect the first communication hole and the first holder path, and a second connection path provided to connect the second communication hole and the second holder path; and A filter assembly comprising an inner holder disposed inside the outer holder and including the first holder euro and the second holder euro.

14. In paragraph 12, The water passing through the first holder euro and the second holder euro is arranged to flow along the first direction, A filter assembly in which water passing through the first communication hole and the second communication hole is arranged to flow along a second direction intersecting the first direction.

15. In paragraph 1, The above filter is a first filter that is inserted into the filter holder along the first direction and is provided to be connected to the inlet pipe, A second filter arranged parallel to the first filter in a second direction intersecting the first direction and connected to the outlet pipe, the second filter being arranged to filter water passing through the first filter; and A filter assembly further comprising a connecting pipe provided between the first filter and the second filter.

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