Water filter

Abstract

The present invention relates to a water filter, and the water filter according to an embodiment of the present invention is a water filter detachably coupled to a head connected to a water supply source, the water filter comprising: a cover body having an upper opening that opens upward; the filter cover is arranged on the cover body, shields the upper opening and is provided with a water inlet part allowing water to flow in and a water outlet part allowing water to flow out; the filtering component is accommodated in the cover body and is used for purifying water; and a sealing member which is provided between the cover body and the filter cover, and which makes the space between the cover body and the filter cover airtight when the cover body rotates. When the cover body is coupled to the head, the cover body rotates relative to the filter cover and the filter member as a reference.

Description

Technical Field

[0001] This invention relates to water filters. Background Technology

[0002] Typically, a filtration device may include a head provided in the flow path of water and a filter detachably attached to the head and having a built-in filter element for water purification. Depending on the type of filter element, the filtration device may have various water purification properties, and the filtration device may be composed of a combination of multiple filters having filter elements of different types.

[0003] Furthermore, in order to maintain water purification performance, such a filter device needs to be replaced periodically. It is configured with an easy-to-replace structure so that users can easily replace it when needed.

[0004] On the other hand, the filter device can have a structure that facilitates installation and disassembly. In particular, incorrect installation is prevented by the combination structure of the head and the filter, and various structures that can achieve accurate installation are being developed.

[0005] In addition, a filtration device is being developed that utilizes the rotation of the filter to switch the internal flow path of the head during the process of attaching and detaching the filter, so that no leakage will occur even if the filter is separated.

[0006] However, such filter devices suffer from a problem with the complex flow path structure inside the head used for switching flow paths. Furthermore, repeated flow path switching can lead to decreased head durability and potential leakage. Summary of the Invention

[0007] The purpose of embodiments of the present invention is to provide a water filter that ensures accurate installation.

[0008] The purpose of embodiments of the present invention is to provide a water filter capable of preventing water leakage.

[0009] The purpose of this invention is to provide a water filter that makes it easier to identify and confirm the alignment status of the filter, thereby improving ease of use.

[0010] The water filter of this invention is a water filter detachably coupled to a head connected to a water supply source. The water filter may include: a cover having an upwardly opening; a filter cover disposed on the cover, covering the upward opening, and having an inlet for water inflow and an outlet for water outflow; a filter element housed in the cover for purifying water; and a seal disposed between the cover and the filter cover, which makes the cover and the filter cover airtight when the cover rotates; when the cover is coupled to the head, the cover can rotate relative to the filter cover and the filter element.

[0011] The cover may include: an upper cover forming the upper part of the cover and having the upper opening; and a lower cover joining the lower part of the upper cover to form the lower part of the cover; and a guide protrusion that rotates with the head may be formed on the periphery of the upper cover.

[0012] The upper cover may include: a lower portion, which is combined with the lower cover; and an upper portion, which forms the upper part of the upper cover and is inserted into the inside of the head; the guide protrusion may protrude from the outer surface of the upper portion, and the upper opening may be an upward opening inside the upper portion.

[0013] The water inlet and the water outlet may protrude at a height lower than the upper end of the upper part.

[0014] An upper support member can be provided at the upper end of the filter member to connect the filter member and the filter cover, and the cover can rotate about the center of the filter member and the upper support member.

[0015] The upper support member may have a filter element interface, which protrudes and communicates with the hollow part that passes through the filter member. The filter element interface may form a flow path between the filter member and the filter cover.

[0016] The cover may have a protrusion that protrudes toward the center of the cover to form the upper opening. The filter cover may include a stepped portion that forms a step along the periphery of the filter cover. The stepped portion is disposed below the protrusion. The seal may be disposed between the protrusion and the stepped portion.

[0017] A downwardly protruding limiting protrusion may be formed on the protrusion, and a limiting groove may be formed on the filter cover. The limiting groove is recessed along the periphery of the filter cover, and the limiting groove is for the limiting protrusion to be inserted. The limiting groove may be configured to engage with the limiting protrusion when the cover begins to rotate and ends to rotate.

[0018] The filter cover may have a plurality of contact protrusions, which protrude upward and connect with the lower part of the protrusions, thereby separating the filter cover from the cover body.

[0019] The inner surface of the cover may have a support protrusion that supports the filter cover from the bottom, and the periphery of the filter cover may have a recessed edge groove for the support protrusion to pass through.

[0020] Furthermore, the water filter of this embodiment includes: a filter member for purifying water; a cover housing the filter member and having an upwardly opening; and a filter cover rotatably disposed on the cover to cover the upwardly opening; the filter cover may have an upwardly protruding inlet portion for allowing water to flow in and an outlet portion for allowing water to flow out, the inlet portion and the outlet portion may be formed with an elliptical cross section relative to at least a portion of their respective overall length, having directionality and being aligned.

[0021] The water inlet can be configured to rotate by a set angle based on the configuration direction of the water outlet.

[0022] When viewed from above, the long axis of the water inlet and the long axis of the water outlet can extend in directions that intersect each other.

[0023] The water inlet can be configured such that its long axis extends in the front-to-back direction, and the water outlet can be configured such that its long axis extends in the left-to-right direction.

[0024] The cover may have guide protrusions that rotate and engage with the head when the water filter is installed. The guide protrusions may be configured on both sides based on the filter cover.

[0025] The water inlet and the water outlet can be configured between guide protrusions located on both sides.

[0026] The guide protrusion, the water inlet, and the water outlet can be aligned on the same extension line.

[0027] Before the filter is installed, the guide protrusion, the inlet, and the outlet can be aligned on the same extension line. After the filter is installed, the guide protrusion can move in a direction that intersects with the inlet and outlet due to the rotation of the cover.

[0028] An identification portion may be formed on the inner surface of the cover. Since the water inlet and the water outlet may be formed on the same extension line, the identification portion can confirm the alignment of the filter cover.

[0029] An inlet partition can be formed at the upper end of the inlet section to separate the internal flow path of the inlet section.

[0030] Furthermore, the water filter of this embodiment of the invention, as a water filter detachably coupled to a head connected to a water supply source, may include: a cover body that is rotated to engage with the head and has an upwardly opening; a filter member housed inside the cover body for purifying water; a filter cover that covers the upper opening and rotates relative to the cover body; and a sealing member that makes the cover body and the filter cover airtight; the filter cover has an inlet portion for allowing water to flow in and an outlet portion for allowing water to flow out, the inlet portion and the outlet portion protruding upward to be inserted into the head, and when the cover body is rotated to install the filter on the head, the inlet portion and the outlet portion can move upward while remaining fixed.

[0031] The water inlet and the water outlet are formed with a sealing part, and at least a portion of the sealing part along the vertical protrusion direction is formed with an elliptical cross-sectional shape. The sealing part can be moved above the water inlet and the water outlet to contact the inner surface of the head.

[0032] The inlet and outlet can be configured such that their elliptical cross sections face different directions from each other.

[0033] The water inlet and the water outlet can be inserted into the water inlet and water outlet openings that are elliptical in shape corresponding to each other on the head.

[0034] With the inlet and outlet sections inserted into and fixed to the head, the cover can rotate relative to the filter cover.

[0035] The filter cover may have an upwardly protruding rotating protrusion, and the head may have a rotating groove into which the rotating protrusion is inserted. When the filter is installed on the head, the rotating protrusion can move upward linearly and insert into the rotating groove.

[0036] The rotating protrusion can protrude from the space between the water inlet and the water outlet.

[0037] The filter cover may have an upwardly protruding detection member, and the head is provided with a detection hole for the detection member to be inserted and a filter detection device disposed at a position corresponding to the detection hole and for detecting the detection member. When the filter is installed on the head, the detection member can move upward linearly and be inserted into the detection hole.

[0038] Furthermore, the household appliance of this embodiment may include: a housing; a head, disposed in the housing and connected to a water supply source; and a water filter, detachably installed in the head; the water filter may include: a cover having an upward opening; a filter cover disposed in the cover, covering the upward opening, and having an inlet for water to flow in and an outlet for water to flow out; a filter element housed in the cover for purifying water; and a seal disposed between the cover and the filter cover, which makes the cover and the filter cover airtight when the cover rotates; when the cover is combined with the head, the cover can rotate relative to the filter cover and the filter element.

[0039] When viewed from above, the water inlet and the water outlet can be formed with an elliptical cross-section, and can be directional and aligned.

[0040] The water filter and the household appliance with the water filter according to the embodiments of the present invention have the following effects.

[0041] The filter has a structure in which first and second guide protrusions, located on the left and right sides of the cover, are inserted into corresponding first and second guide members. Therefore, incorrect installation of the filter can be prevented.

[0042] Furthermore, the elliptical cross-section of the inlet and outlet sections exposed on the top surface of the filter are arranged in different directions, thus confirming the installation orientation and further preventing incorrect installation of the filter.

[0043] As mentioned above, by preventing incorrect installation of the filter, the valve's operability can be ensured and its ease of use can be improved.

[0044] Furthermore, before installing the filter, visually confirming the alignment of the markings or guide protrusions with the inlet and outlet water portions allows for accurate alignment of the filter cover, thus preventing incorrect filter installation.

[0045] In particular, although the structure of the filter, which rotates relative to the cover, causes the alignment of the filter cover to be impaired, the user can visually confirm this and easily re-align it and confirm it, thus having the advantage of further improving ease of use.

[0046] Furthermore, when the filter is fully inserted, the valve opens and supplies water to the filter, while when the filter is removed, the valve closes, thus preventing leakage.

[0047] In addition, a sealing element is provided between the cover and the filter cover, and the airtightness can be further achieved by pressurizing the filter with the pressure inside the filter. Therefore, the filter with the structure of the cover rotating relative to each other has the advantage of effectively preventing water leakage.

[0048] Furthermore, since the inlet and outlet sections have elliptical cross-sections that extend in directions intersecting each other along their major axes, a rotational torque is generated when the filter is engaged, preventing the filter from shifting.

[0049] Furthermore, the protruding inlet and outlet sections can further resist external impacts. In particular, due to the orientation of the inlet and outlet sections, the installation orientation and alignment of the filter can be identified and visualized, thereby further improving ease of use.

[0050] Furthermore, the head connected to the filter has a structure in which the portion connected to the inlet and outlet of the filter does not rotate, while the filter housing and the filter cover rotate.

[0051] Therefore, by simplifying the internal flow path structure of the head and omitting the rotation and flow structures, it has the advantage of preventing damage to the head even after prolonged use and blocking the possibility of water leakage. Attached Figure Description

[0052] Figure 1 This is a front view of the refrigerator according to the first embodiment of the present invention.

[0053] Figure 2 This is a diagram showing the flow path structure for water supply in the refrigerator.

[0054] Figure 3 This is a perspective view of the filter assembly of the first embodiment of the present invention, with the filter attached to the head.

[0055] Figure 4 This is an exploded perspective view of the filter separated from the head.

[0056] Figure 5 This is an exploded three-dimensional view of the head.

[0057] Figure 6 This is a three-dimensional view of the head as seen from below.

[0058] Figure 7 This is a three-dimensional view of the head as seen from the rear.

[0059] Figure 8 This is a top view of the head.

[0060] Figure 9yes Figure 4 Sectional view 9-9.

[0061] Figure 10 yes Figure 3 10-10 3D diagram.

[0062] Figure 11 This is an exploded perspective view of the valve that forms part of the head.

[0063] Figure 12 yes Figure 3 12-12 sectional perspective view.

[0064] Figure 13 yes Figure 12 Sectional view 13-13.

[0065] Figure 14 This is an exploded 3D view of the filter.

[0066] Figure 15 This is a top view of the filter.

[0067] Figure 16 This is a side view of the upper part of the filter as seen from one side.

[0068] Figure 17 This is a side view of the upper part of the filter from the other side.

[0069] Figure 18 yes Figure 14 18-18 sectional perspective view.

[0070] Figure 19 This is a perspective view of the filter cover of the filter.

[0071] Figure 20 This is a side view of the filter cover.

[0072] Figure 21 yes Figure 19 21-21 sectional perspective view.

[0073] Figure 22 yes Figure 4 22-22 sectional perspective view.

[0074] Figure 23 This is a longitudinal sectional view of the upper cover and the filter cover in their combined state.

[0075] Figure 24 yes Figure 23 Enlarged view of part A.

[0076] Figure 25 yes Figure 4 25-25 sectional perspective view.

[0077] Figure 26 This is an exploded perspective view of the aligned state for the combination of the filters, viewed from one side.

[0078] Figure 27 This is an exploded perspective view of the aligned state for the combination of the filters, viewed from the other side.

[0079] Figure 28 This is a longitudinal cross-sectional view of the head separated from the filter.

[0080] Figure 29 This is a diagram showing the state in which the filter begins to be inserted into the head.

[0081] Figure 30 yes Figure 29 30-30 sectional view.

[0082] Figure 31 This is a diagram showing the filter inserted into the head and rotated at a set angle.

[0083] Figure 32 yes Figure 31 Sectional view 32-32.

[0084] Figure 33 This is a front view of the state where the filter and the head are fully integrated.

[0085] Figure 34 This is a rear view showing the filter and head fully bonded together.

[0086] Figure 35 yes Figure 33 A longitudinal sectional view.

[0087] Figure 36 This is a diagram showing the water flow when the filter and head are fully connected.

[0088] Figure 37 This is a cross-sectional view showing the connection state of the inlet and outlet sections when the filter and head are fully engaged.

[0089] Figure 38 This is a cross-sectional view showing the configuration of the inlet and outlet sections at the top of the filter. Detailed Implementation

[0090] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments that disclose the concept of the present invention. By adding or modifying other constituent elements, other regressive inventions or other embodiments included within the scope of the present invention can be easily proposed.

[0091] The direction is defined before the description. In embodiments of the present invention, the direction can be... Figure 3 The direction facing the head is called "up," the direction facing the filter is called "down," the direction facing the mounting component is called "rear," and the direction away from the mounting component is called "front." Furthermore, the direction between the center of the filter and the head can be called "inner," and the direction away from the center can be called "outer."

[0092] Furthermore, the embodiments of the present invention are illustrated using a refrigerator as an example among a plurality of household appliances. However, it should be noted in advance that the filter of the embodiments of the present invention is not limited to the structure and form of water purifiers, ice makers, etc., and can be applied to various household appliances that require water purification.

[0093] Figure 1 This is a front view of the refrigerator according to the first embodiment of the present invention. Furthermore, Figure 2 This is a diagram showing the flow path structure for water supply in the refrigerator.

[0094] As shown in the figure, the refrigerator 1 of this embodiment of the invention can be formed by a cabinet 10 that forms a storage space and a door 20 that opens and closes the storage space of the cabinet 10.

[0095] The storage space may include a refrigerator compartment 11 located in the upper part of the housing 10 and a freezer compartment 12 located in the lower part of the housing 10.

[0096] The door 20 may include a refrigerator door 21 and a freezer door 22 that can be independently opened and closed, respectively, for the refrigerator compartment 11 and the freezer compartment 12. A pair of refrigerator doors 21 may be provided on the left and right sides, and may be configured to open and close the refrigerator compartment 11 by rotation.

[0097] Furthermore, the freezer door 22 can have a drawer-like structure, and can be configured to open and close the freezer 12 by means of an inlet.

[0098] Depending on the configuration of the storage space and the type and form of the refrigerator for opening and closing the storage space, various structures can be achieved. For ease of explanation and understanding, the embodiments of the present invention are described based on a refrigerator in which the refrigerator compartment is located above the freezer compartment and is opened and closed by a pair of doors.

[0099] A dispenser 23 and an ice maker 241 may be provided on either side of the pair of refrigerator compartment doors 21. The ice maker 241 may also be located inside the refrigerator compartment 11 or the freezer compartment 12, instead of the refrigerator compartment doors.

[0100] The dispenser 23 can be located on the front of the refrigerator door 21 and can be configured to allow water or ice to be dispensed from the outside via user operation. Furthermore, an ice-making chamber 24 is provided above the dispenser 23. The ice-making chamber 24 serves as an insulated space for making and storing ice, and can house the ice maker 241. It can be configured to be opened and closed using an additional door.

[0101] Alternatively, an ice maker 121 may be installed inside the freezer compartment 12. When the freezer compartment door 22 is open, it is possible to approach the ice maker 121 and take out the ice produced by the ice maker 121.

[0102] To distinguish between the ice maker 121 located in the freezer compartment 12 and the ice maker 241 located in the refrigerator compartment door 21, the ice maker 241 located in the refrigerator compartment 11 can be referred to as the first ice maker 241, and the ice maker 121 located in the freezer compartment 12 can be referred to as the second ice maker 121.

[0103] The refrigerator 1 may be equipped with a filter assembly 40 for purifying water supplied from an external water source 2. As an example, the water source 2 may be tap water. Alternatively, the water source 2 may be a container storing water, such as a water tank.

[0104] The filter assembly 40 can be connected to a water purification device. The water device may include an ice maker for making ice, a dispenser for dispensing purified water, etc. Furthermore, the water device and filter assembly 40 can also be used in other household appliances besides refrigerators, such as water purifiers.

[0105] As an example, water supplied from the water source 2, after being purified by the filter assembly 40, can be dispensed or supplied to the ice makers 241 and 121 using the distributor 23. Furthermore, the water source 2, filter assembly 40, distributor 23, and ice makers 241 and 121 can be connected via the water supply path 100.

[0106] In detail, the water supply path 100 may include a connecting pipe 101 connected to the water supply source 2 and the water supply valve 102 inside the cabinet 10. As an example, the water supply valve 102 may be located inside the mechanical compartment where the compressor and condenser are configured. Furthermore, a flow sensor is provided in the water supply valve 102, thus enabling the regulation and control of the flow rate of water supplied to the refrigerator 1.

[0107] The water supply path 100 may include an inlet pipe 103 and an outlet pipe 104. The inlet pipe 103 may be configured to connect the water supply valve 102 to the filter assembly 40 to supply water to the filter assembly 40. The outlet pipe 104 may be connected to the filter assembly 40 and the distributor 23 or ice makers 241, 121 to supply purified water. The inlet pipe 103 and the outlet pipe 104 may also be configured as a plurality of pipes connected by pipe fittings.

[0108] Furthermore, the water outlet pipe 104 can be diverted using a diversion valve 105. As an example, the water outlet pipe 104 may include a first water outlet pipe 1041 supplying purified water to the distributor 23 and the first ice maker 241, and a second water outlet pipe 1042 supplying purified water to the second ice maker 121.

[0109] On the other hand, the filter assembly 40 can be disposed in the refrigerator compartment 11. As an example, the filter assembly 40 can be disposed in one corner of the top surface of the refrigerator compartment 11, on either the left or right side. As another example, the filter assembly 40′ can also be disposed between or behind storage components such as drawers or shelves of the refrigerator compartment 11, or behind such storage components. As yet another example, the filter assembly 40″ can also be disposed in the refrigerator compartment door 21.

[0110] On the other hand, the filter assembly 40 can be configured to be easily replaceable with the filter 60 that actually achieves water purification. As an example, a filter device 30 can be provided in the refrigerator compartment 11. The filter device 30 can be configured to be accessible when the refrigerator compartment door 21 is open.

[0111] The filter device 30 may include a housing 31 and a cover 32. The housing 31 may be disposed on the top surface of the housing 10. Furthermore, the housing 31 may have an internal space for arranging the filter assembly 40. The cover 32 may be opened and closed by rotation of the housing 31. The filter assembly 40 may be exposed to the outside by opening the cover 32. The filter assembly 40 may include a filter 60 and a head 50. Furthermore, when the cover 32 is open, the filter 60 may be exposed forward for easy installation and removal. The filter 60 may be referred to as a water filter for purifying water; hereinafter, for ease of explanation, it will be called a filter.

[0112] The structure of the filter assembly 40 will now be described in detail with reference to the accompanying drawings.

[0113] Figure 3 This is a perspective view of the filter assembly of the first embodiment of the present invention, with the filter integrated into the head. Furthermore, Figure 4 This is an exploded perspective view of the filter separated from the head.

[0114] As shown in the figure, the filter assembly 40 may include a head 50 for mounting the filter assembly 40 and a filter 60 detachably mounted on the head 50.

[0115] As an example, the head 50 may include a mounting member 51 and a head body 52. ​​The mounting member 51 is used to mount the filter assembly 40 and can be fastened using a fixing member such as a screw to fix the filter assembly 40 in the corresponding position. As an example, the mounting member 51 may be fixed to one side of the refrigerator compartment 11. On the other hand, if the refrigerator 1 is provided with a structure for mounting the head 50, the mounting member 51 may be omitted, and the head 50 may also be constituted by the head body 52. ​​That is, the head body 52 may also represent the head 50.

[0116] Furthermore, the head body 52 can be rotatably mounted to the mounting member 51. The head body 52 can rotate about the mounting member 51 while the filter 60 is installed, allowing the filter 60 to be easily installed and removed.

[0117] The inlet pipe 103 and outlet pipe 104 can be connected to both sides of the head body 52. ​​The inlet pipe 103 and outlet pipe 104 are connected to the head body 52 via inlet pipe connector 1031 and outlet pipe connector 1041, respectively. Therefore, water flowing in from the inlet pipe 103 through the inlet pipe connector 1031 can be supplied to the filter 60 via the head body 52, and the water purified by the filter 60 can be discharged from the head body 52 through the outlet pipe connector 1041 to the outlet pipe 104.

[0118] The filter 60 may include a cover 600 forming its appearance. Furthermore, the cover 600 may be detachably mounted to the head body 52. ​​Additionally, the interior of the cover 600 may accommodate a filter element for water purification. Figure 14 (63 in the example). As an example, the cover 600 may include an upper cover 62 and a lower cover 61, and the filter member 63 may be accommodated inside the upper cover 62 and the lower cover 61.

[0119] The upper end of the filter 60 can be inserted into the bottom surface of the opening of the head 50 to engage with the head 50. As an example, guide protrusions 625 and 626 for guiding engagement with the head 50 can be formed on the outer surface of the upper cover 62. The upper cover 62 can be inserted into the interior of the head body 52, and the guide protrusions 625 and 626 can rotate and move along the inner surface of the head body 52. ​​That is, the cover 600 can rotate during insertion and installation into the head body 52.

[0120] The inlet 663 and outlet 664 can protrude upwards from the upper cover 62. Furthermore, if the filter 60 is connected to the head 50, the inlet 663 and outlet 664 can communicate with the flow path of the head 50. Therefore, water supplied through the inlet pipe 103 can be discharged to the outlet pipe 104 after being purified by the filter 60.

[0121] Even if the cover 600 rotates, the water inlet 663 and water outlet 664 can remain aligned and connected to the head 50. That is, when the filter 60 is installed, the water inlet 663 and water outlet 664 can move upward and insert into the corresponding water inlet holes inside the head 50. Figure 6 5321) and water outlet ( Figure 6 (5323) The cover 600 can be rotated and connected to the head 50, respectively, with the water inlet 663 and the water outlet 664.

[0122] The head 50 will now be described in detail with reference to the accompanying drawings.

[0123] Figure 5 This is an exploded perspective view of the head. Furthermore, Figure 6 This is a three-dimensional view of the head as seen from below. Furthermore, Figure 7 This is a three-dimensional view of the head as seen from the rear. Furthermore, Figure 8 This is a top view of the head.

[0124] As shown in the figure, the head 50 may include the mounting component 51, the water inlet pipe 103, the water outlet pipe 104, and the head body 52.

[0125] The mounting member 51 is used to mount the filter assembly 40, and the head body 52, on which the filter 60 is mounted, is rotatably mounted to the mounting member 51. More specifically, the mounting member 51 may include a mounting portion 511 that contacts the object to be mounted and a head connecting portion 512 for rotatably engaging the head body 52.

[0126] The mounting portion 511 can form the back side of the mounting member 51 and can extend in the vertical direction. Furthermore, screws can be tightened into the mounting portion 511 to secure the mounting member 51.

[0127] The head connecting portion 512 can protrude forward from the left and right sides of the mounting portion 511. The head body 52 can be disposed between the pair of head connecting portions 512. Specifically, a pipe connector mounting portion 513 for mounting the pipe connectors 1031 and 1041 can be formed at the front end of the head connecting portion 512. In addition, a mounting portion opening 514 for axial engagement of the pipe connectors 1031 and 1041 can be formed on the side of the pipe connector mounting portion 513.

[0128] The inlet pipe connector 1031 and the outlet pipe connector 1041 can be respectively mounted on the pipe connector mounting portions 513 located on both sides, and are configured to be rotatable by axially engaging with the mounting portion opening 514. Furthermore, the inlet pipe connector 1031 and the outlet pipe connector 1041 are rotatably connected to both sides of the head body 52. ​​Therefore, with the head body 52 and pipe connectors 1031 and 1041 installed on the head connecting portion 512, the head body 52 and pipe connectors 1031 and 1041 can rotate around the head connecting portion 512.

[0129] The head body 52 can be formed into a cylindrical shape that connects to the filter 60 through an open bottom surface. Furthermore, the inlet pipe 103 and the outlet pipe 104 can be connected to both sides of the head body 52.

[0130] In detail, the head body 52 may include an upper head portion 522 and a lower head portion 521. The upper head portion 522 may be connected to the water inlet connector 1031 and the water outlet connector 1041. On both sides of the upper head portion 522, there may be water inlet pipe connection portions 5221 connected to the water inlet connector 1031 and water outlet pipe connection portions 5222 connected to the water outlet connector 1041.

[0131] The inlet pipe connection 5221 and the outlet pipe connection 5222 can have openings on both sides of the upper part of the head. In addition, the ends of the inlet pipe connector 1031 and the outlet pipe connector 1041 can be rotatably inserted into the inlet pipe connection 5221 and the outlet pipe connection 5222.

[0132] Furthermore, the inlet pipe connection 5221 and the outlet pipe connection 5222 can be configured to face each other along the same extension line. The inlet pipe connection 5221 and the outlet pipe connection 5222 can protrude outwards from the outer surface of the upper part 522 of the head and can be rotatably coupled to the head connection 512. Furthermore, the inlet pipe connection 5221 and the inlet pipe connector 1031, and the outlet pipe connection 5222 and the outlet pipe connector 1041 can be integrally formed, and the inlet pipe 103 and the outlet pipe 104 can also be directly connected to the inlet pipe connection 5221 and the outlet pipe connection 5222.

[0133] The lower part 521 of the head can be disposed below the upper part 522 of the head, and can form a mating space 520 that engages with the upper end of the filter 60. The mating space 520 can open downwards. Furthermore, the lower part 521 of the head can be formed to have a diameter larger than that of the upper part 522 of the head. Additionally, a confirmation window 5211 can be formed in the lower part 521 of the head to observe the accurate installation status of the filter 60. Furthermore, a rear confirmation window 5212 can be formed behind the lower part 521 of the head facing the confirmation window 5211. To distinguish it from the rear confirmation window 5212, the confirmation window 5211 can also be referred to as the front confirmation window 5211.

[0134] The bottom surface of the lower part 521 of the head may be open, forming a mating space 520 to accommodate the upper end of the filter 60. In addition, mating guides 523 and 524 may be formed on the inner surface of the lower part 521 of the head to guide the insertion and mating of the filter 60.

[0135] As an example, the connecting guides 523 and 524 may include a first guide 523 and a second guide 524. The first guide 523 may be configured to guide the insertion and engagement of a first guide protrusion 625 formed on the filter 60, and the second guide 524 may be configured to guide the insertion and engagement of a second guide protrusion 626 formed on the filter 60.

[0136] In detail, the first guide 523 and the second guide 524 can be formed in a position facing each other. Furthermore, the first guide 523 and the second guide 524 can be arranged in the same direction as the arrangement direction of the inlet pipe connection 5221 and the outlet pipe connection 5222.

[0137] The first guide 523 may be recessed on the inner surface of the lower part of the head 521 and extend upward from the lower end of the lower part of the head 521. The first guide 523 may extend to the confirmation window 5211, guiding the first guide protrusion 625 to move with the first guide 523 to the confirmation window 5211.

[0138] The first guide 523 may include a first guide hole 5231 that opens at the lower end of the lower portion 521 of the head. The position of the first guide hole 5231 may be located below the water inlet pipe connection portion 5221. The size of the first guide hole 5231 may be formed to correspond to the size of the first guide protrusion 625, so that the first guide protrusion 625 can be inserted through the first guide hole 5231.

[0139] Furthermore, the first guide 523 may include a first guide portion 5232 extending from one end of the first guide hole 5231 toward the confirmation window 5211. The first guide portion 5232 may be formed obliquely or with an arc, and may contact the first guide protrusion 625. Therefore, the first guide protrusion 625 inserted into the first guide hole 5231 may be guided to move toward the confirmation window 5211 while maintaining contact with the first guide portion 5232. Furthermore, a pair of first guide portions 5232 may be formed at both ends of the first guide hole 5231, and the first guide protrusion 625 may be provided between the pair of first guide portions 5232.

[0140] At this time, the first guide portion 5232 can be formed along the periphery of the inner surface of the lower part of the head 521. Furthermore, the first guide protrusion 625 can move along the inner surface of the lower part of the head 521. Therefore, the filter cover 600 can rotate during the movement of the first guide protrusion 625 from the first guide hole 5231 to the confirmation window 5211.

[0141] The second guide 524 may be recessed on the inner surface of the lower part of the head 521 and extend upward from the lower end of the lower part of the head 521. The second guide 524 may extend to the rear confirmation window 5212, guiding the second guide protrusion 626 to move with the second guide 524 to the rear confirmation window 5212.

[0142] The second guide 524 may be formed at a position facing the first guide 523. Furthermore, the second guide 524 may be formed in a shape corresponding to the first guide 523, but may extend in a direction opposite to the extending direction of the first guide 523.

[0143] The second guide 524 may include a second guide hole 5241 opening at the lower end of the lower portion 521 of the head. The second guide hole 5241 may be located below the water outlet pipe connection portion 5222. Furthermore, the second guide hole 5241 may be formed in a direction opposite to the first guide hole 5231. The size of the second guide hole 5241 may be formed to correspond to the size of the second guide protrusion 626, thereby allowing the second guide protrusion 626 to be inserted through the second guide hole 5241.

[0144] Furthermore, the second guide 524 may include a second guide portion 5242 extending from one end of the second guide hole 5241 toward the rear confirmation window 5212. The second guide portion 5242 may be formed obliquely or with an arc, and may contact the second guide protrusion 626. Therefore, the second guide protrusion 626, inserted into the second guide hole 5241, can be guided to move toward the confirmation window 5212 while maintaining contact with the second guide portion 5242. Furthermore, a pair of second guide portions 5242 may be formed at both ends of the second guide hole 5241, and the second guide protrusion 626 may be provided between the pair of second guide portions 5242.

[0145] At this time, the second guide portion 5242 can be formed along the periphery of the inner surface of the lower part of the head 521. Furthermore, the second guide protrusion 626 can move along the inner surface of the lower part of the head 521. Therefore, the filter cover 600 can rotate during the movement of the second guide protrusion 626 from the second guide hole 5241 to the rear confirmation window 5212.

[0146] Furthermore, a downwardly protruding limiting portion 5213 may be formed at the upper end of the rear confirmation window 5212. The limiting portion 5213, which protrudes downward, may be formed into an elastic ring shape. Therefore, it is possible to confirm through the rear confirmation window 5212 that the limiting portion 5213 is inserted into the limiting groove formed on the top surface of the second guide protrusion 626. Figure 17 (6266 in the middle). In addition, at the moment the limiting part 5213 is inserted into the limiting groove 6266, the tactile sensation generated by the elastic deformation of the limiting part 5213 and its engagement with the limiting groove 6266 will be transmitted to the user, so that the user can recognize that the filter 60 has been fully installed.

[0147] On the other hand, a head interior 53 may be provided inside the head body 52. ​​The head interior 53 may be formed separately and integrated with the head body 52. ​​The head interior 53 may be exposed through the bottom surface of the opening in the head body 52. ​​Furthermore, when viewed from below, the head interior 53 may be formed as a circle concentric with the head body 52.

[0148] The interior 53 of the head can be configured to engage with the inlet 663 and the outlet 664. Furthermore, the interior 53 of the head can also provide mounting structures for inlet rings 541 and 542 for sealing the inlet 663 and the outlet 664. Additionally, the interior 53 of the head can provide a structure for mounting a filter detection device 55 for detecting the filter 60. Furthermore, the interior 53 of the head can also be configured to allow insertion of a rotating protrusion 669 for easier relative rotation of the cover 600.

[0149] In detail, the head interior 53 may include an inner base 532 and an inner wheel 531. The inner base 532 may form the bottom surface of the head interior 53. Furthermore, the inner base 532 may be circular. The center of the inner base 532 may be located on the same extension line as the center of the head body 52. ​​When the head interior 53 is attached to the head body 52, the inner base 532 may be positioned higher than the lower end of the head body 52.

[0150] The inner base 532 may have an inlet hole 5321 and an outlet hole 5323. The inlet hole 5321 and the outlet hole 5323 may be arranged side by side. Furthermore, the inlet hole 5321 and the outlet hole 5323 may be located between the first guide hole 5231 and the second guide hole 5241. Therefore, if the first guide protrusion 625 and the second guide protrusion 626 are inserted into the first guide hole 5231 and the second guide hole 5241, the inlet portion 663 and the outlet portion 664 can naturally be inserted into the inlet hole 5321 and the outlet hole 5323, respectively.

[0151] The inlet hole 5321 and the outlet hole 5323 can be formed into elliptical shapes corresponding to the cross-sectional shapes of the inlet portion 663 and the outlet portion 664, respectively. Furthermore, the inlet hole 5321 and the outlet hole 5323 can be configured to be directional.

[0152] Therefore, the inlet portion 663 and the outlet portion 664 can be inserted and installed into the corresponding inlet hole 5321 and outlet hole 5323 respectively without incorrect installation. Since incorrect installation can be prevented when installing the filter 60, the insertion of the inlet portion 663 ensures the accurate operation of the valve 56 inside the head 50 when installing the filter 60.

[0153] Furthermore, since the water inlet 663 and the water outlet 664 have elliptical cross-sectional shapes, the directionality can be easily confirmed when the filter 60 is viewed from above, and the accurate alignment can be easily identified.

[0154] Moreover, even if a torque is applied to the water inlet 663 and water outlet 664, which remain fixed relative to the rotating cover 600, they will not rotate or shift, but will remain structurally stable.

[0155] As an example, the water inlet 5321 can be configured such that the long axis of the cross section is arranged along the front-back direction, and the water outlet 5323 can be configured such that the long axis of the cross section is arranged along the left-right direction.

[0156] An upwardly extending inlet frame 5325 may be formed around the periphery of the inlet hole 5321. The inlet frame 5325 may form a space for the inlet part 663 to be inserted. In addition, the upper end of the inlet frame 5325 may support the inlet ring 541. The inlet ring 541 may be placed on the inlet frame 5325 to prevent deformation and detachment.

[0157] An inclined surface 5322 may be formed between the water inlet hole 5321 and the water inlet frame 5325. The inclined surface 5322 guides the water inlet part 663 to be inserted into the inside of the water inlet hole 5321, so that when the filter 60 is separated, the water inlet part 663 can be smoothly disengaged without being stuck by the end of the water inlet hole 5321.

[0158] On the other hand, a valve 56 may be provided above the water inlet 5321. The valve 56 can open and close the flow path communicating with the water inlet 5321. The valve 56 may have a structure similar to a check valve. The valve 56 can be opened by connecting with the water inlet 663 when the filter 60 is installed and the water inlet 663 is inserted into the water inlet 5321. Furthermore, when the filter 60 is not installed, it can remain closed to prevent leakage.

[0159] An upwardly extending outlet frame 5326 may be formed around the periphery of the outlet hole 5323. The outlet frame 5326 may form a space for the outlet part 664 to be inserted. In addition, the upper end of the outlet frame 5326 may support the outlet ring 542. The outlet ring 542 may be placed on the outlet frame 5326 to prevent deformation and detachment.

[0160] Therefore, if the head interior 53 is installed on the head body 52, the inlet ring 541 and the outlet ring 542 can be fixed in the vertical direction by the head body 52, the inlet frame 5325 and the outlet frame 5326.

[0161] An inclined surface 5324 may be formed between the water outlet 5323 and the water outlet frame 5326. The inclined surface 5324 guides the water outlet portion 664 to insert into the inside of the water outlet 5323, allowing the water outlet portion 664 to detach smoothly when the filter 60 is separated, without being stuck by the end of the water outlet 5323. In particular, the filter 60 can be separated by bending during rotation, and the inclined surfaces 5322 and 5324 ensure smooth separation of the filter 60.

[0162] On the other hand, a filter detection device 55 for detecting the installation of the filter 60 can be provided inside the head body 52. ​​As an example, the filter detection device 55 can be a sensor that senses changes in the magnetic field. As another example, the filter detection device 55 can be composed of a proximity sensor, a contact switch, a radio frequency identification (RFID) reader, etc. A wire 550 connected to the filter detection device 55 can extend upwards from the head body 52.

[0163] The inner base 532 may have a detection hole 5237 for insertion of the detection member 668 (described later). Furthermore, the filter detection device 55 may be provided at the upper end of the detection hole 5237. Therefore, if the filter 60 is installed on the head 50, the detection member ( Figure 14 The detection component 668 can be inserted into the interior of the detection hole 5237, and the filter detection device 55 can detect the detection component 668 to determine the installation of the filter 60.

[0164] An inclined surface 5328 may be formed around the periphery of the detection hole 5237 to allow the detection component 668 to smoothly enter and exit.

[0165] The inner base 532 may have a rotating groove 5329 for the rotating protrusion 669 to be inserted. The rotating groove 5329 may extend upwards and be shaped to correspond to the rotating protrusion 669, allowing the rotating protrusion ( Figure 14 The 669 in the figure can fit snugly against the rotating groove 5329. Therefore, torque can be easily generated when the cover 600 is rotated. Furthermore, the rotating protrusion 669 and the rotating groove 5329, when the filter 60 is installed, allow the filter cover ( Figure 14The water inlet 663 and the water outlet 664 are firmly connected to each other with the inside of the head 53, so that the water inlet 663 and the water outlet 664 can be prevented from shifting when the cover 600 rotates.

[0166] An inclined or curved inclined surface 5320 may be formed around the periphery of the rotating groove 5329. Therefore, it can not only guide the insertion of the rotating protrusion 669, but also allow the rotating protrusion 669 to easily enter and exit without being stuck by the rotating groove 5329 when installing or removing the filter 60.

[0167] The detection hole 5237 and the rotating groove 5329 can be configured facing each other. Furthermore, the configuration of the detection hole 5237 and the rotating groove 5329 can intersect with the configuration of the water inlet hole 5321 and the water outlet hole 5323. For example, the water inlet hole 5321 and the water outlet hole 5323 can be configured on the left and right sides with reference to the center of the inner base 532, and the detection hole 5237 and the rotating groove 5329 can be configured front to back.

[0168] The inner base 532 may be formed to be smaller than the size of the bottom surface of the opening of the head body 52. ​​Furthermore, the inner wheel 531 may extend upwards along the periphery of the inner base 532. The inner wheel 531 may extend to the upper end of the lower part 521 of the head.

[0169] An inner engaging portion 533 may protrude upward from the upper end of the inner wheel 531. The inner engaging portion 533 may engage with the top surface of the lower part of the head 521, which forms a step at the upper end of the lower part of the head 521. For example, a engaging hole 5213 may be formed on the top surface of the lower part of the head 521, through which the hook-shaped inner engaging portion 533 may pass. Since the inner engaging portion 533 engages with the engaging hole 5213, the interior of the head 53 can be fixedly installed inside the head body 52. ​​Furthermore, a engaging guide 5311 may be formed at the upper end of the inner wheel 531. The engaging guide 5311 may be inserted into the head body 52 in an upwardly protruding shape. In this case, the engaging guide 5311 is formed in different sizes to prevent the interior of the head 53 from being incorrectly installed and to ensure it is installed in the correct position.

[0170] The outer surface of the inner wheel 531 can be separated from the inner surface of the head body 52. ​​In this case, the thickness T1 of the first guide portion 5232 can be less than the thickness T2 of the second guide portion 5242. Therefore, the distance G between the outer end of the first guide portion 5232 and the outer surface of the inner wheel 531 is formed to allow for the protrusion extension of the first guide protrusion 625. Figure 16 Insert 6256 in the middle.

[0171] Conversely, the distance between the outer end of the second guide portion 5242 and the outer surface of the inner wheel 531 is less than the thickness of the protruding extension portion 6256, so the protruding extension portion 6256 cannot be inserted.

[0172] The radius R1 from the center C of the head 50 or the interior 53 of the head to the first guide portion 5232 can be greater than the radius R2 to the second guide portion 5242. Therefore, when the filter 60 is installed, a gap G can be provided between the outer end of the interior 53 of the head and the first guide portion 5232, allowing the protruding extension 6256 to be inserted. When the first guide protrusion 625 attempts to insert into the inner side of the second guide 524, the protruding extension 6256 is blocked by the second guide portion 5242. Therefore, the first guide protrusion 625 cannot be inserted into the second guide 524.

[0173] That is, the first guide 523 and the second guide 524 can only be inserted into the corresponding first guide protrusion 625 and the second guide protrusion 626, respectively. In addition, the water inlet 663 and the water outlet 664 can also be inserted into the water inlet hole 5321 and the water outlet hole 5323, which have corresponding cross-sectional shapes, respectively.

[0174] Furthermore, if the first guide protrusion 625 and the second guide protrusion 626 are rotated and inserted into the confirmation window 5211 and the rear confirmation window 5212, respectively, the filter 60 is installed. Additionally, the inlet portion 663 and the outlet portion 664 are inserted into and pass through the inlet ring 541 and the outlet ring 542 disposed inside the inlet hole 5321 and the outlet hole 5323, thereby preventing leakage between the head 50 and the filter 60.

[0175] A flow path communicating with the water inlet pipe 103 and the water outlet pipe 104, as well as the water inlet section 663 and the water outlet section 664, can be formed inside the head body 52. ​​Furthermore, a valve 56 for opening and closing the flow path communicating with the water inlet section 663 can be installed inside the head body 52.

[0176] The flow path structure inside the head body 52 will be described in detail below with reference to the accompanying drawings.

[0177] Figure 9 yes Figure 4 Sectional view 9-9. Furthermore... Figure 10 yes Figure 3 10-10 sectional perspective view.

[0178] As shown in the figure, an inlet flow path 5220 communicating with the inlet pipe connection 5221 can be formed inside the head body 52, and an outlet flow path 5251 communicating with the outlet pipe connection 5222 can be formed.

[0179] Furthermore, a valve mounting portion 5242, connected to the water inlet passage 5220 and equipped with a valve 56, can be formed inside the head body 52. ​​The valve 56 is used to selectively supply water from the water inlet passage 5220 to the filter 60, and can be opened and closed depending on the installation of the filter 60. The water inlet portion 663 can be inserted into the valve 56, and when the valve 56 is open, the water inlet portion 663 and the water inlet passage 5220 can communicate with each other.

[0180] Furthermore, an outlet receiving portion 5252, which connects to the water outlet flow path 5251 and is inserted into the water outlet portion 664, can be formed inside the head body 52. ​​The cross-sectional shape of the valve mounting portion 5242 and the outlet receiving portion 5252 can be formed into an elliptical shape corresponding to the cross-sectional shape of the water inlet portion 663 and the water outlet portion 664.

[0181] On the other hand, if the head interior 53 is attached to the head body 52, the main body extension 5215 of the head body 52 can be inserted between the inlet frame 5325 and the outlet frame 5326 and the inner wheel 531. The main body extension 5215 can be formed as a cylindrical shape with an open bottom surface, and a pair can be formed on the left and right sides. In addition, the upper ends of the inlet portion 663 and the outlet portion 664 can be inserted into the inside of the main body extension 5215. Furthermore, the inlet ring 541 and the outlet ring 542 can be respectively disposed inside the main body extension 5215.

[0182] The inlet ring 541 and outlet ring 542 can be formed in a ring shape, or in an elliptical shape corresponding to the inlet hole 5321 and outlet hole 5323. Furthermore, the inlet ring 541 can be restricted vertically by the upper end of the inlet frame 5325 and the lower end of the valve 56, and the inlet ring 541 can be restricted from outward displacement by the inner surface of the main body extension 5215.

[0183] When the water inlet 663 and water outlet 664 are inserted, the water inlet ring 541 and water outlet ring 542 can maintain their installation positions, preventing the water inlet 663 and water outlet 664 from shifting and maintaining an airtight state.

[0184] Furthermore, the cross-sectional shape of the portion of the water inlet section 663 and the water outlet section 664 that is provided with at least the water inlet ring 541 and the water outlet ring 542 is formed into an elliptical shape corresponding to the water inlet ring 541 and the water outlet ring 542, thereby ensuring airtightness.

[0185] On the other hand, the valve 56 can be positioned above the inlet ring 541. Furthermore, if the filter 60 is installed on the head 50, the valve 56 can be opened by the inlet portion 663. Conversely, if the filter 60 is detached from the head 50, the valve 56 is closed, blocking the inlet flow path 5220, preventing water from being supplied to the filter 60.

[0186] The valve 56 will now be described in detail with reference to the accompanying drawings.

[0187] Figure 11 This is an exploded perspective view of the valve, which is a component of the head. Furthermore, Figure 12 yes Figure 3 12-12 sectional perspective view. Figure 13 yes Figure 12 Sectional view 13-13.

[0188] As shown in the figure, the valve 56 may include a valve body 561, a piston 563, a spring 564, and a valve cap 562.

[0189] The valve housing 561 can be formed into a cylindrical shape with an open top surface 5611 and a bottom surface 5613, and its cross-sectional shape can be formed into an elliptical shape corresponding to the valve mounting portion 5242. The periphery of the bottom surface 5613 of the valve housing 561 can protrude outward and be fixed to the valve mounting portion 5242. In addition, the bottom surface 5613 of the valve housing 561 can connect with and support the inlet ring 541 from above.

[0190] Furthermore, the circumferential surface 5612 of the valve housing 561 can be connected to the valve mounting portion 5242. On the other hand, as... Figure 9As shown, an inwardly protruding piston support portion 5614 can be formed inside the valve housing 561. Based on the piston support portion 5614, an inlet receiving portion 5616 for the upper end of the water inlet portion 663 to be inserted can be formed below, and a piston receiving portion 5610 for accommodating the piston 563 can be formed above. Furthermore, a housing passage 5615 can be formed inside the piston support portion 5614. In this case, the inlet receiving portion 5616 and the piston receiving portion 5610 can have elliptical cross-sectional shapes, and the housing passage 5615 can have a circular cross-section. Furthermore, the major axis of the inlet receiving portion 5616 and the piston receiving portion 5610 can be larger than the diameter of the housing passage 5615, thus allowing water to flow easily when the movement of the piston 563 causes the flow path to open.

[0191] The piston 563 can be disposed in the piston receiving portion 5610, and can open and close the housing passage 5615 by moving up and down. Furthermore, a valve cap 562 can be disposed on the top surface 5611 of the valve housing 561. Additionally, a spring 564 can be disposed between the valve cap 562 and the piston 563 to elastically support the piston 563.

[0192] The piston 563 may include a seat 5631 that shields the housing passage 5615, a contact portion 5633 that protrudes downward from the bottom surface of the seat 5631 and passes through the housing passage 5615, and a push rod 5632 that protrudes upward from the top surface of the seat 5631 and passes through the valve cap 562.

[0193] The seat portion 5631 can be formed in a circular shape to open and close the housing passage 5615. In this case, the housing passage 5615 can be formed in a circular shape corresponding to the seat portion 5631, and opened and closed by the up-and-down movement of the piston 563. Furthermore, the seat portion 5631 can be formed in a circular shape with a diameter corresponding to the minor axis length of the cross-section of the elliptical valve housing 561.

[0194] Therefore, as Figure 13 As shown, a relatively wide flow path space S is provided between the portion of the valve housing 561 corresponding to the position of its major axis and the outer surface of the seat 5631. Therefore, when the housing passage 5615 is opened by moving the piston 563 upwards, a larger flow rate of water can be supplied to the water inlet 663.

[0195] On the other hand, the contact portion 5633 can protrude downward through the housing passage 5615, and can connect with the upper end of the water inlet portion 663 when the filter 60 is installed. For example, the contact portion 5633 can be formed to intersect at least a portion of the water inlet contact portion 6632 of the water inlet portion 663. Therefore, when the water inlet portion 663 is inserted and contacts the contact portion 5633, it is possible to prevent the contact portion 5633 from inserting into the interior of the water inlet portion 663 and partially obstructing the flow path. For example, the contact portion 5633 is formed in a cross shape or a straight cross-section shape, thereby ensuring space for water flow.

[0196] Furthermore, a piston ring 565 may be provided at the upper end of the contact portion 5633, that is, on the bottom surface of the seat portion 5631. The piston ring 565 may be in contact with the periphery of the housing passage 5615, making the housing passage 5615 and the piston 563 airtight. The piston ring 565 may be formed into a circular ring shape corresponding to the housing passage 5615 and the seat portion 5631.

[0197] The push rod 5632 can extend upward from the center of the seat 5631, and can extend through the push rod hole 5621 of the valve cap 562. Therefore, when the piston 563 moves up and down, under the action of the push rod 5632, the piston 563 will not tilt or move eccentrically up and down.

[0198] Furthermore, the spring 564 can be configured to be passed through by the push rod 5632. The upper and lower ends of the spring 564 are supported by the valve cap 562 and the seat 5631, respectively. Additionally, the seat 5631 can utilize the elastic force of the spring 564 to maintain the state of blocking the housing passage 5615. Furthermore, the spring 564 can be compressed when the piston 563 moves upward.

[0199] The valve cap 562 can cover the top surface 5611 of the valve housing 561. The valve cap 562 can be formed into an elliptical shape corresponding to the cross-section of the upper part of the valve housing 561. In addition, a push rod hole 5621 for the push rod 5632 to pass through can be formed in the center of the valve cap 562. In addition, a cap through-hole 5623 can be formed through the valve cap 562. The cap through-hole 5623 can be formed on both sides of the passage through which water flows in through the water inlet passage 5220, with reference to the push rod hole 5621. Therefore, by moving the piston 563 to open the housing passage 5615, water supplied to the water inlet passage 5220 can flow into the water inlet 663 after passing through the valve 56 via the cap through-hole 5623 and the housing passage 5615.

[0200] The filter 60 will now be described in detail with reference to the accompanying drawings.

[0201] Figure 14 This is an exploded 3D view of the filter.

[0202] As shown in the figure, the filter 60 may include a cover 600 forming the appearance, a filter element 63 disposed inside the cover 600, and a filter cover 66 exposed through the top surface of the cover 600.

[0203] The cover 600 may include an upper cover 62 forming the upper part of the cover 600 and a lower cover 61 forming the lower part of the cover 600. The upper cover 62 and the lower cover 61 may be combined with each other to form a space inside to accommodate the filter member 63.

[0204] The upper cover 62 and the lower cover 61 can be formed into a cylindrical shape when joined, thus forming the appearance of the filter 60. Furthermore, the upper cover 62 and the lower cover 61 can be formed of plastic material and can be joined together by ultrasonic welding or rotary welding.

[0205] The upper cover 62 may be configured with openings on the top and bottom surfaces, and spaces 6200 and 620 may be formed inside the upper cover 62 for the filter cover 66 to be rotatably configured.

[0206] As an example, the upper cover 62 may include an upper portion 623 inserted into the interior of the head body 52 and a lower portion 622 protruding downwards from the head body 52. ​​Furthermore, a first guide protrusion 625 and a second guide protrusion 626 are formed around the periphery of the upper portion 623, allowing the filter 60 to be detachably attached to the head 50.

[0207] The upper cover 62 may also have a cover joint portion 621 extending downwards from the lower portion 622. The cover joint portion 621 can be inserted into the inner side of the lower cover 61 and contact the inner surface of the lower cover 61. Furthermore, a connecting groove 6221 may be formed between the lower end of the lower portion 622 and the cover joint portion 621 for the upper end of the lower cover 61 to be inserted. The connecting groove 6221 and the upper end of the lower cover 61 can be joined together by welding.

[0208] The top surface of the lower cover 61 may be open, forming a receiving space 611 for accommodating the filter member 63. The filter member 63 can be inserted through the top surface of the opening of the lower cover 61 and accommodated inside the receiving space 611.

[0209] On the other hand, the cover 600 can rotate relative to the filter cover 66. That is, the filter cover 66 can be kept in an aligned state for engagement with the head 50, and the cover 600 is fastened to the head 50 by rotation.

[0210] Furthermore, the filter cover 66 is connected to the filter member 63 via the upper support 65. Therefore, the cover 600 can also be considered to rotate relative to the filter cover 66 and the filter member 63 that are connected to each other.

[0211] The filter element 63 can be formed as a cylinder with a hollow core 631 extending through the center. The filter element 63 can be formed of a porous material and configured to purify water passing through it. As an example, water outside the filter element 63 can flow into the hollow core 631 through the filter element 63, flow upward through the hollow core 631, and supply purified water.

[0212] The filter element 63 can be made of various materials and types, and suitable materials can be selected and used to match the required water purification performance. As an example, the filter element 63 can be made of various filter elements such as membrane filter, pre-activated carbon filter, and multi-stage sedimentation filter.

[0213] A lower support member 64 may be provided on the bottom surface of the filter member 63. The lower support member 64 serves as a component that supports the filter 60 from below and can be in contact with the bottom surface of the lower cover 61.

[0214] The lower support member 64 may include a bottom surface 641, a lower frame 642, and a lower protrusion 643. The bottom surface 641 may be in contact with and support the bottom surface of the filter member 63. Furthermore, the lower frame 642 may extend upwards along the periphery of the bottom surface 641 and support the lower periphery of the filter member 63. Additionally, the lower protrusion 643 may protrude upwards from the bottom surface 641. Furthermore, the lower protrusion 643 may be inserted from below the hollow 631 and support the inner surface of the filter member 63.

[0215] The upper support member 65 can be disposed on the upper end of the filter member 63, fixing the upper part of the filter member 63 while guiding purified water to the filter cover 66 through the hollow section 631. Furthermore, the upper support member 65 can also connect the filter member 63 and the filter cover 66 to each other. Therefore, the filter member 63 and the filter cover 66 can be in a state where they are joined together using the upper support member 65, and the cover 600 can rotate relative to each other with respect to the filter member 63 and the filter cover 66.

[0216] The upper support member 65 may include a top surface 651, an upper frame 652, a filter element interface 653, and an upper protrusion 654. The top surface 651 of the support member may be in contact with the top surface of the filter element 63 and support the filter element 63. In addition, the upper frame 652 may extend downward along the periphery of the top surface 651 of the support member and support the upper periphery of the filter element 63.

[0217] Furthermore, a filter element interface 653 may protrude upward from the center of the top surface 651 of the support member. An outlet 6531 communicating with the hollow 631 may be formed at the upper end of the filter element interface 653. In addition, a sealing groove 6532 for mounting the interface seal 6533 may be formed around the periphery of the filter element interface 653. The filter element interface 653 may be configured to be inserted into the interface receiving portion 665 of the filter cover 66.

[0218] Furthermore, the upper protrusion 654 can protrude downward from the top surface 651 of the support member. Additionally, the upper protrusion 654 can be inserted from above the hollow 631 to support the inner surface of the filter element 63. The upper protrusion 654 can communicate with the filter cartridge inlet 653. That is, the filter cartridge inlet 653, the upper protrusion 654, and the hollow 631 can be arranged on the same extension line, communicating with each other to form a flow path for the water purified by the filter element 63 to pass through.

[0219] The filter cover 66 can be located inside the upper cover 62, dividing the interior of the upper cover 62 vertically. Furthermore, the filter cover 66 can be rotatably mounted on the upper cover 62. In this case, a sealing element 67 can be provided between the periphery of the filter cover 66 and the upper cover 62. Therefore, leakage can be prevented even when the filter cover 66 is rotatably mounted on the upper cover 62.

[0220] The water inlet 663 and water outlet 664 protrude upwards from the top surface of the filter cover 66. Furthermore, the water inlet 663 and water outlet 664 protrude from the top surface of the opening in the upper cover 62. Additionally, when the filter 60 is installed on the head 50, the water inlet 663 and water outlet 664 can be inserted into the water inlet hole 5321 and water outlet hole 5323, respectively.

[0221] A rotating protrusion 669 may protrude upward from the top surface of the filter cover 66 for inserting into the rotating groove 5329. Furthermore, a detection member 668 may protrude upward from the top surface of the filter cover 66. A magnet 67 may be installed inside the detection member 668. The rotating protrusion 669 and the detection member 668 may be arranged in a direction intersecting the arrangement directions of the water inlet 663 and the water outlet 664.

[0222] On the other hand, the detection member 668 can be inserted into the detection hole 5237, and the outer surface of the detection member 668 can be in contact with the inner surface of the detection hole 5237. Furthermore, even without the rotating protrusion 669, the detection member 668 can still be inserted into the detection hole 5237, firmly fixing the head interior 53 and the filter cover 66 to each other. Therefore, even if the cover 600 rotates, the filter cover 66 can be kept fixed by the detection member 668, preventing displacement of the water inlet 663 and the water outlet 664.

[0223] The upper structure of the filter 60 will now be described in detail with reference to the accompanying drawings.

[0224] Figure 15 This is a top view of the filter. Furthermore, Figure 16 This is a side view of the upper part of the filter, taken from one side. Furthermore, Figure 17 This is a side view of the upper part of the filter, viewed from the other side. Furthermore, Figure 18 yes Figure 14 18-18 sectional perspective view.

[0225] As shown in the figure, the upper cover 62 may include an upper portion 623 and a lower portion 622. The diameter of the upper portion 623 may be smaller than the diameter of the lower portion 622. Furthermore, the lower end of the upper portion 623 and the upper end of the lower portion 622 may form a downwardly inclined connecting surface 624. In addition, an upwardly protruding cover rib 6241 may be formed on the connecting surface 624.

[0226] The cover rib 6241 can be adjacent to the lower end of the head body 52 when the filter 60 is installed. Therefore, the gap between the cover rib 6241 and the head body 52 can be visually confirmed, so that the filter 60 forms a complete and secure fastener.

[0227] Furthermore, the cover rib 6241 can also serve as a fixture during the rotational welding of the upper cover 62 and the lower cover 61. A plurality of cover ribs 6241 can be formed along the connecting surface 624. Moreover, the cover ribs 6241 can be symmetrically arranged with respect to the center of the upper cover 62.

[0228] The outer surface of the upper portion 623 may protrude with the first guide protrusion 625 and the second guide protrusion 626. The first guide protrusion 625 and the second guide protrusion 626 may be formed facing each other with reference to the center of the cover 600. Furthermore, the first guide protrusion 625 may be shaped to be inserted into the first guide member 523, and the second guide protrusion 626 may be shaped to be inserted into the second guide member 524. Additionally, the first guide protrusion 625 and the second guide protrusion 626 may be formed with different shapes to prevent incorrect installation of the filter 60 and guide accurate installation.

[0229] In particular, the first guide protrusion 625 and the second guide protrusion 626 can engage with the first guide 523 and the second guide 524 before the water inlet 663 and the water outlet 664 are inserted into the head. Therefore, in the event of incorrect installation caused by the first guide 523, the first guide protrusion 625 can prevent the water inlet 663 and the water outlet 664 from contacting the inside of the head, thereby fundamentally preventing deformation and damage to the water inlet 663 and the water outlet 664 caused by incorrect installation.

[0230] As an example, the first guide protrusion 625 may be formed on the left side relative to the center of the filter 60. Furthermore, the first guide protrusion 625 may be located to the side of the water inlet 663.

[0231] The first guide protrusion 625 may include a first upper portion 6251 and a first lower portion 6252 forming a top surface and a bottom surface, a first forward-sloping portion 6253 connecting the front ends of the first upper portion 6251 and the first lower portion 6252, and a first rearward-sloping portion 6254 connecting the rear ends of the first upper portion 6251 and the first lower portion 6252. The first upper portion 6251, the first lower portion 6252, the first forward-sloping portion 6253, and the first rearward-sloping portion 6254 may protrude from the outer surface of the upper cover 62 with the same thickness. In particular, the first forward-sloping portion 6253 may protrude in a state of contact with the first guide portion 5232, allowing the filter 60 to easily rotate and move upward.

[0232] The lengths of the first upper portion 6251 and the first lower portion 6252 can be formed to correspond to the size of the first guide hole 5231. The filter 60 moves upwards, causing the first guide protrusion 625 to insert into the first guide hole 5231. Furthermore, the first upper portion 6251 and the first lower portion 6252 can extend parallel to the upper end of the upper cover 62. Additionally, the first guide protrusion 625 can be positioned above the upper portion 623. Furthermore, a connecting rib 6255 can be formed vertically connecting the first upper portion 6251 and the first lower portion 6252.

[0233] The first forward-sloping portion 6253 and the first rearward-sloping portion 6254 can be formed in shapes corresponding to the slope of the first guide portion 5232. Therefore, the first forward-sloping portion 6253 or the first rearward-sloping portion 6254 can move along with the first guide portion 5232.

[0234] On the other hand, a rearwardly extending protruding extension 6256 may be formed at the rear end of the first upper portion 6251. The protruding extension 6256 may protrude rearward from the same extension line as the first upper portion 6251, and may protrude along the outer surface of the upper portion 623. Furthermore, the protrusion thickness of the protruding extension 6256 may be less than the protrusion thickness of the first upper portion 6251. Furthermore, the protrusion thickness of the protruding extension 6256 may be less than the interval G between the head interior 53 and the first guide portion 5232. Therefore, when the first guide protrusion 625 is inserted into the first guide hole 5231, the protruding extension 6256 inserts between the first guide portion 5232 and the outer surface of the head interior 53, allowing the first guide protrusion 625 to be inserted and rotated.

[0235] The second guide protrusion 626 may include a second upper portion 6261 and a second lower portion 6262 forming a top surface and a bottom surface, a second forward-sloping portion 6263 connecting the front ends of the second upper portion 6261 and the second lower portion 6262, and a second rearward-sloping portion 6264 connecting the rear ends of the second upper portion 6261 and the second lower portion 6262. The second upper portion 6261, the second lower portion 6262, the second forward-sloping portion 6263, and the second rearward-sloping portion 6264 may protrude from the outer surface of the upper portion 623 with the same thickness. In particular, the second forward-sloping portion 6263 may protrude to a position that moves in contact with the second guide portion 5242. Furthermore, the protrusion thickness of the second guide protrusion 626 may be the same as the protrusion thickness of the first guide protrusion 625.

[0236] The lengths of the second upper portion 6261 and the second lower portion 6262 can be configured to correspond to the dimensions of the second guide hole 5241. By moving the filter 60 upwards, the second guide protrusion 626 can be inserted into the second guide hole 5241. Furthermore, the second upper portion 6261 and the second lower portion 6262 can extend parallel to the upper end of the upper cover 62. Additionally, the configuration height of the second guide protrusion 626 can be the same as the configuration height of the first guide protrusion 625. Furthermore, a connecting rib 6265 can be formed to vertically connect the second upper portion 6261 and the second lower portion 6262.

[0237] The second forward tilting portion 6263 and the second backward tilting portion 6264 can be formed in shapes corresponding to the tilt of the second guide portion 5242. Therefore, the second forward tilting portion 6263 or the second backward tilting portion 6264 can move while in contact with the second guide portion 5242, making it easy for the filter 60 to rotate and move upward.

[0238] Furthermore, a downwardly recessed limiting groove 6266 may be formed on the second upper portion 6261. When the second guide protrusion 626 moves to the rear confirmation window 5212, the limiting portion 5213 inserts into the limiting groove 6266 to limit the filter 60.

[0239] On the other hand, a protrusion may be formed inside the upper cover 62. The protrusion may include a first protrusion 627. Furthermore, the protrusion may also include a second protrusion 628. The first protrusion 627 may divide the interior of the upper cover 62 into an upper space 620 that exposes the top surface of the filter cover 66 and a lower space 6200 that rotatably accommodates the lower end of the filter cover 66.

[0240] The first protrusion 627 may be formed on the upper portion 623. The first protrusion 627 may protrude toward the center of the upper cover 62 and may have an upper opening 6270 for the filter cover 66 to pass through. The first protrusion 627 may support the periphery of the filter cover 66, and may support the filter cover 66 so that it does not separate upwards even if the pressure inside the filter 60 increases.

[0241] Furthermore, a second protrusion 628 may be formed below the first protrusion 627. The second protrusion 628 may be formed at the upper end of the lower portion 622. Furthermore, the second protrusion 628 may form a continuous step at the lower end of the first protrusion 627. The second protrusion 628 may protrude from the inner surface of the upper cover 62 toward the center of the upper cover 62, and may protrude lower than the first protrusion 627. Therefore, the inner surface of the upper cover 62, the second protrusion 628, and the first protrusion 627 may sequentially form steps. The sealing member 67 can be configured using the stepped shape of the first protrusion 627 and the second protrusion 628, and the filter cover 66 can be rotatably configured inside the upper cover 62.

[0242] On the other hand, a limiting protrusion 629 may be formed on the bottom surface of the second protrusion 628. The limiting protrusion 629 can protrude downwards from a position corresponding to the limiting groove 6614 formed on the filter cover 66. Furthermore, if the filter cover 66 is installed inside the upper cover 62, the limiting protrusion 629 can be inserted into the limiting groove 6614. Furthermore, when the upper cover 62 rotates, the limiting protrusion 629 can move along the limiting groove 6614. Furthermore, before the filter 60 is installed on the head 50, the limiting protrusion 629 can cause the cover 600 to contact one end of the limiting groove 6614 in an aligned state. Furthermore, the limiting protrusion 629 can contact the other end of the limiting groove 6614 when the cover 600 has finished rotating and the filter 60 is engaged with the head 50.

[0243] A support protrusion 6211 may be formed below the second protrusion 628. The support protrusion 6211 may be configured to support the filter cover 66 from below when the filter cover 66 is installed inside the upper cover 62.

[0244] The support protrusion 6211 can protrude from the inner surface of the upper cover 62 and can be formed at a position corresponding to the lower end of the filter cover 66. A plurality of support protrusions 6211 can be formed at the same height. For example, a pair of support protrusions 6211 can be formed facing each other. Furthermore, the pair of support protrusions 6211 can be formed with different sizes to prevent incorrect assembly when combined with the filter cover.

[0245] On the other hand, with the filter cover 66 installed on the upper cover 62, the water inlet 663 and the water outlet 664 are directionally aligned within the upper cover 62. Furthermore, the user can easily visually confirm the alignment of the water inlet 663 and the water outlet 664.

[0246] In detail, such as Figure 15 As shown, the marking portion 6275 can be formed on the top surface 6271 of the first protrusion 627 of the filter 60. The marking portion 6275 can be formed on the top, bottom, left, and right sides in directions that intersect each other. The marking portion 6275 can protrude or be recessed on the top surface 6271 of the first protrusion 627, and can extend toward the center of the upper cover 62.

[0247] The marking portion 6275 can protrude from the top surface of the first protrusion 627 and extend towards the water inlet 663 and the water outlet 664. Therefore, the marking portion 6275 can visualize the alignment of the water inlet 663 and the water outlet 664. Additionally, the marking portion can protrude from the first protrusion 627 to enhance the strength of the first protrusion 627 and prevent the head interior 53 from separating due to water pressure by supporting it from below.

[0248] As an example, the water inlet 663 and water outlet 664 formed on the filter cover 66 can be arranged on the extension line of the marking portion 6275 arranged along the left and right sides. Furthermore, the rotating protrusion 669 and detection member 668 formed on the filter cover 66 can be arranged on the extension line of the marking portion 6275 arranged along the front and rear sides. That is, when viewing the top surface of the filter 60 from above, the marking portion 6275 can be aligned with the water inlet 663 and water outlet 664, as well as the rotating protrusion 669 and detection member 668, on the same extension line. Therefore, the user can visually confirm the alignment of the filter cover 66.

[0249] Furthermore, the cover 600 can rotate 90° when the filter 60 is installed. Since there are four markings 6275 arranged at 90° angles, the alignment of the water inlet 663 and water outlet 664, as well as the rotating protrusion 669 and the detection member 668, can be visualized as the cover 600 rotates.

[0250] On the other hand, before the filter 60 is installed on the head 50, the water inlet 663 and the water outlet 664 can be arranged between the first guide protrusion 625 and the second guide protrusion 626. That is, the first guide protrusion 625 and the second guide protrusion 626, as well as the water inlet 663 and the water outlet 664, can be arranged on the same extension line in the left-right direction. In particular, the markings 6275 on both sides, the first guide protrusion 625 and the second guide protrusion 626, and the water inlet 663 and the water outlet 664 can all be located on the same extension line, allowing the user to easily confirm the alignment of the filter cover 66.

[0251] In the state described above, while the filter 60 is installed on the head 50, the cover 600 rotates, and the filter cover 66 remains fixed. Furthermore, the first guide protrusion 625 and the second guide protrusion 626 can rotate 90° clockwise. At this time, the rotating protrusion 669 and the detection member 668 can be located between the first guide protrusion 625 and the second guide protrusion 626. That is, the first guide protrusion 625 and the second guide protrusion 626, the front and rear marking portions 6275, and the rotating protrusion 669 and the detection member 668 can all be arranged on the same extension line in the front-rear direction.

[0252] On the other hand, when viewed from above, the inlet portion 663 and the outlet portion 664 can each be formed into an elliptical shape. Furthermore, when viewed from above, the inlet portion 663 and the outlet portion 664 can be arranged in different directions. Therefore, when the filter 60 is installed on the head 50, the inlet portion 663 and the outlet portion 664 can be directionally connected to the inlet hole 5321 and the outlet hole 5323. That is, the directional nature of the cross-sectional shapes of the inlet portion 663 and the outlet portion 664 prevents incorrect installation of the filter 60 and ensures accurate installation.

[0253] As an example, the water inlet 663 and the water outlet 664 can be configured such that the major axes of their respective elliptical cross-sections intersect each other. That is, the water inlet 663 can be configured such that its major axis L1 faces forward and backward, and its minor axis S1 faces left and right. Furthermore, the major axis L1 of the water inlet 663 and the vertical extension line Lv arranged side by side with the marking portion 6275 positioned vertically relative to the center of the filter cover can be on the same line.

[0254] The water outlet 664 can be configured with its major axis L2 pointing left-right and its minor axis S2 pointing forward-backward. That is, the extension lines of the major axis L1 of the cross-section of the water inlet 663 and the major axis L2 of the cross-section of the water outlet 664 can intersect each other perpendicularly. Furthermore, the major axis L2 of the water outlet 664 and the horizontal extension line L of the marking portion 6275, which is arranged on the same line as the center of the filter cover, are aligned. H They can be located on the same line.

[0255] As described above, the inlet section 663 and the outlet section 664 are elliptical in cross-section, and the inlet section 663 and the outlet section 664 have a structure in which the major axes L1 and L2 of the cross-section extend in directions that intersect each other. Therefore, the torque generated when the cover 600 rotates will not cause the filter cover 66 to rotate.

[0256] The elliptical shape of the cross-sections of the water inlet 663 and the water outlet 664 is not a perfect circle; it can be an elliptical shape with a major axis and a minor axis and continuous arcs. In this invention, the ellipse can be defined as a structure in which the elliptical shape of the cross-sections of the water inlet 663 and the water outlet 664 includes a portion of the section that is broken, recessed, or has protruding parts, or has a non-arc straight line section in its overall periphery. That is, the water inlet 663 and the water outlet 664 can have various cross-sectional shapes with directional cross-sections where the major axis and the minor axis intersect each other.

[0257] On the other hand, the rotating protrusion 669 and the rotating groove 5329 can engage with each other to generate torque for rotating the cover 600 while the filter cover 66 is fixed. Therefore, the rotating protrusion 669 and the rotating groove 5329 can minimize the flow of water in the inlet 663 and outlet 664 when the cover 600 rotates. Furthermore, through the engagement of the detection member 668 and the detection groove 5327, the filter cover 66 can remain more securely fixed inside the head 53, ensuring a stable connection between the inlet 663 and the outlet 664.

[0258] The filter cover 66 will now be described in detail with reference to the accompanying drawings.

[0259] Figure 19 This is a perspective view of the filter cover of the filter. Furthermore, Figure 20 This is a side view of the filter cover. Furthermore, Figure 21 yes Figure 19 Sectional perspective view 21-21. Furthermore... Figure 22 yes Figure 4 22-22 sectional perspective view.

[0260] As shown in the figure, the bottom surface of the filter cover 66 is open, and when viewed from above, the filter cover 66 can be formed into a circle. An inner frame 661 can be formed at the lower end of the filter cover 66. The inner frame 661 can be in contact with the inner surface of the upper cover 62.

[0261] Furthermore, a border groove 6611 and a border hook 6612 may be formed on the inner border 661. The border groove 6611 may extend from the lower end to the upper end of the inner border 661. In addition, the border groove 6611 may be formed at a position corresponding to the support protrusion 6211, and may be configured to allow the support protrusion 6211 to pass through.

[0262] The frame hook 6612 may be formed at the lower end of the frame groove 6611. The frame hook 6612 may be formed at an angle to allow the support protrusion 6211 to pass through easily. The frame groove 6611 may be formed on two sides facing each other, and their sizes may be different to allow the insertion of a support protrusion 6211 of a corresponding size. Therefore, it is possible to prevent the filter cover 66 from being misassembled and to ensure that it is assembled in the correct direction within the cover 600.

[0263] Furthermore, the support protrusion 6211 can support the lower end of the filter cover 66 after passing through the frame groove 6611 and the frame hook 6612. Additionally, the filter cover 66 can remain fixedly mounted on the upper cover 62. Furthermore, when the cover 600 rotates, the support protrusion 6211 can move along the lower end of the inner frame 661.

[0264] Furthermore, a step portion 666 may protrude upward from the upper end of the inner frame 661, the diameter of the step portion 666 being smaller than the diameter of the inner frame 661. A limiting groove 6614 for the limiting protrusion 629 to be inserted may be formed between the inner frame 661 and the step portion 666.

[0265] The limiting groove 6614 can extend along the upper end of the inner frame 661. The limiting groove 6614 can open upwards. Therefore, if the filter cover 66 is inserted from below and above the upper cover 62, the limiting protrusion 629 can be inserted into the inside of the limiting groove 6614. Furthermore, one end of the limiting groove 6614 can be in contact with the limiting protrusion 629 before the cover 600 is rotated, before the filter 60 is installed. Furthermore, the other end of the limiting groove 6614 can be in contact with the limiting protrusion 629 when the cover 600 is fully rotated during the installation of the filter 60.

[0266] That is, as the cover 600 rotates, the limiting protrusion 629 engages with both ends of the limiting groove 6614, causing the cover 600 to rotate at a set angle. For example, the set angle can be approximately 90°. Therefore, the limiting groove 6614 can have a set length to allow the cover 600 to rotate 90°. Furthermore, the limiting groove 6614 can be formed on one side of the filter cover 66 corresponding to the limiting protrusion 629, rather than on the inner frame 661.

[0267] On the other hand, contact protrusions 6613 may be formed on the top surface of the inner frame 661. A plurality of contact protrusions 6613 may be formed along the inner frame 661. For example, three or four contact protrusions 6613 may be spaced apart at a predetermined distance. Furthermore, the contact protrusions 6613 may contact the inner surface of the upper cover 62. Therefore, the outer surface of the filter cover 66 and the inner surface of the upper cover 62 are not in complete contact with each other, but rather partially in contact. Moreover, the upper cover 62 can rotate in a state that minimizes friction with the fixed filter cover 66, ensuring smooth rotational operation.

[0268] like Figure 24 As shown, the vertical spacing between the upper cover 62 and the filter cover 66 caused by the contact protrusion 6613 minimizes direct contact between the filter cover 66 and the upper cover 62. Furthermore, the top surface of the contact protrusion 6613 is formed in an arc shape or at an angle, allowing the contact protrusion 6613 to make point contact or minimal area contact with the inner surface of the upper cover 62.

[0269] The stepped portion 666 can be composed of multiple segments, and can have shapes that correspond to the protruding and recessed shapes of the inner surface of the upper cover 62. As an example, the stepped portion 666 may include a second stepped portion 6662 at the upper end of the inner frame 661 and a first stepped portion 6661 at the upper end of the second stepped portion 6662. Furthermore, the sealing member 67 can be disposed between the first stepped portion 6661 and the second stepped portion 6662. Additionally, the first stepped portion 6661 can cover the upper opening 6270 of the first protrusion 627.

[0270] An inner top surface 662, exposing to the upper opening 6270, may be formed above the first stepped portion 6661. The inner top surface 662 may be formed as a circle corresponding to the upper opening 6270. Furthermore, the inner top surface 662 may be coplanar with the top surface of the first protrusion 627. Alternatively, the inner top surface 662 may be formed as a curved surface or an inclined shape with a higher central portion and lower edges.

[0271] Furthermore, an inlet 663 and an outlet 664 may be formed on the inner top surface 662. The inlet 663 and outlet 664 may be referred to as an inlet connector and an outlet connector, respectively. The inlet 663 and outlet 664 may be spaced apart from each other and may be formed at the same height h1. A rotating protrusion 669 and a detection member 668 may protrude upwards from the inner top surface 662. The rotating protrusion 669 and the detection member 668 may be arranged in a direction intersecting the arrangement direction of the inlet 663 and outlet 664.

[0272] Furthermore, the height h2 of the rotating protrusion 669 and the height h3 of the detection member 668 can be lower than the height h1 of the water inlet 663 and the water outlet 664. Therefore, when the filter 60 is installed on the head 50, the water inlet 663 and the water outlet 664 can be inserted into the water inlet hole 5321 and the water outlet hole 5323 first. While the water inlet 663 and the water outlet 664 are being inserted, the rotating protrusion 669 and the detection member 668 can be inserted into the rotating groove 5329 and the detection hole 5237. That is, because the height h1 of the water inlet 663 and the water outlet 664 is formed higher, when the water inlet 663 and the water outlet 664 are inserted and installed, they can fit into the interior 53 of the head without interfering with other components 668 and 669.

[0273] An inlet inclined portion 66301 and an outlet inclined portion 66401 may be formed at the upper ends of the inlet portion 663 and the outlet portion 664, respectively. The inlet inclined portion 66301 and the outlet inclined portion 66401 may be formed with a smaller diameter towards the top. Therefore, the inlet portion 663 and the outlet portion 664 can be more easily inserted into the inlet hole 5321 and the outlet hole 5323. Furthermore, during the insertion of the inlet portion 663 and the outlet portion 664 into the inlet hole 5321 and the outlet hole 5323, damage to the inlet ring 541 and the outlet ring 542 can be prevented.

[0274] In particular, inclined surfaces 5322 and 5324 can be formed around the openings of the inlet hole 5321 and the outlet hole 5323. When the filter 60 is first installed, the inclined portion 66301 of the inlet and the inclined surface 5322 of the inlet hole 5321 come into contact with each other, and the inclined portion 66401 of the outlet and the inclined surface 5324 of the outlet hole 5323 begin to contact each other. Therefore, even if the inlet portion 663 and the outlet portion 664 are not accurately aligned with the inlet hole 5321 and the outlet hole 5323, the inlet portion 66301 and the outlet portion 66401, through contact and guidance with the inclined surfaces 5322 and 5324, can naturally insert the inlet portion 663 and the outlet portion 664 into the interior of the inlet hole 5321 and the outlet hole 5323. As an example, if the filter 60 is rotated by a set angle (approximately 20° for example) with the alignment as a reference, the inclined portions 66301 and 66401 contact each other with the inclined surfaces 5322 and 5324, guiding the inlet portion 663 and outlet portion 664 to align with the inlet hole 5321 and outlet hole 5323, thereby enabling the inlet portion 663 and outlet portion 664 to be inserted into the inlet hole 5321 and outlet hole 5323. This structure is highly effective for the connection between the inlet portion 663 and outlet portion 664, which have elliptical cross-sectional structures oriented in opposite directions, and the inlet hole 5321 and outlet hole 5323.

[0275] In particular, even if the filter cover 66 is not fully aligned, as the inlet portion 663 and outlet portion 664 approach the inlet hole 5321 and outlet hole 5323, the inclined portions 66301 and 66401 and the inclined surfaces 5322 and 5324 can come into contact with each other and naturally align the filter cover 66. As an example, even when the filter cover 66 is approximately 10% misaligned (about 20° off from the aligned state), the inlet portion 663 and outlet portion 664 can still be inserted into the inlet hole 5321 and outlet hole 5323.

[0276] The filter cover 66 may include an interface receiving portion 665. The interface receiving portion 665 may extend downward from the inner top surface 662. The interface receiving portion 665 may be disposed on the center line of the filter cover 66. Furthermore, the interface receiving portion 665 is formed into a cylindrical shape with an open bottom surface, which can form a second space 6651 for the filter element interface 653 to be inserted.

[0277] The interface receiving portion 665 can be formed in a shape corresponding to the outer diameter of the interface seal 6533. Furthermore, the outer end of the interface receiving portion 665 can connect to the lower end of the water inlet portion 663 and the lower end of the water outlet portion 664. The interior of the filter cover 66 can be divided by the interface receiving portion 665 into a first space 6610 where water flows in through the water inlet portion 663 and a second space 6651 where clean water is discharged to the water outlet portion 664.

[0278] In detail, the water inlet 663 can communicate with the first space 6610. The lower end of the water inlet 663 can form a water inlet outlet 6633 communicating with the first space 6610.

[0279] Furthermore, an inlet contact portion 6632 may be formed inside the water inlet portion 663 to separate the water inlet flow path 6631 inside the water inlet portion 663. The inlet contact portion 6632 may extend from the upper end of the water inlet portion 663 to the water inlet outlet 6633. In addition, the inlet contact portion 6632 may be formed along the minor axis S1 of the elliptical cross-section of the water inlet portion 663.

[0280] Therefore, water flowing in through the flow path spaces S on both sides of the seat 5631 can flow more effectively into the first space 6610 through the water inlet 663. Furthermore, the upper end of the water inlet contact portion 6632 can connect with the contact portion 5633 of the valve 56.

[0281] In detail, the water inlet 663 can be formed into an elliptical shape, and the major axis L1 can extend in the front-back direction. When the water inlet outlet 6633 of the water inlet 663 is positioned adjacent to the side steps 6661 and 6662, and the major axis L1 is positioned in the front-back direction, the size of the water inlet outlet 6633 can be ensured so that water can flow smoothly through the water inlet 663.

[0282] Furthermore, the water supplied through the valve 56 flows smoothly along the water inlet 663 because the cross-sectional shape of the flow path formed by the long axis L1 of the water inlet 663 corresponds to that of the flow path formed by the valve 56.

[0283] Furthermore, when the inlet contact portion 6632 is arranged along the major axis L1 of the inlet portion 663, a portion of the inlet outlet 6633 side is blocked, preventing water from flowing evenly due to the water inlet flow path 6631 being divided by the inlet contact portion. Therefore, the inlet contact portion 6632 is arranged along the minor axis S1 of the inlet portion 663, allowing the inlet outlet 6633 side to be fully open, enabling water to flow evenly through the water inlet flow path 6631.

[0284] As another example, the inlet contact portion 6632 may be formed at the upper end of the inlet portion 663, but a portion may be formed inside the inlet portion 663. The inlet contact portion 6632 may also be formed only at the upper end or upper part of the inlet portion 663 that can contact the contact portion 5633.

[0285] As another example, when viewed from above, the inlet contact portion 6632 is formed by a plurality of ribs crossing to form a cross shape, thereby providing more stable support for the contact portion 5633.

[0286] The water outlet 664 can communicate with the second space 6651. The lower end of the water outlet 664 can form a water inlet 6643 communicating with the second space 6651. Furthermore, a water flow path 6641 can be formed inside the water outlet 664. The cross-sectional shape of the water flow path 6641 can be elliptical, and it can be arranged in a direction intersecting the cross-sectional shape of the water inlet path 6631.

[0287] Furthermore, inclined portions 6634 and 6644 may be formed at the lower ends of the water inlet 663 and water outlet 664, respectively. These inclined portions 6634 and 6644 are formed to slope or curve from the inner top surface 662. The inclined portions 6634 and 6644 may also be formed in shapes corresponding to the inclined portions 5322 and 5324. The inclined portions 6634 and 6644 can enhance the strength of the water inlet 663 and water outlet 664 to prevent deformation and damage. Furthermore, when the water inlet 663 and water outlet 664 are inserted into the water inlet hole 5321 and water outlet hole 5323, the inclined portions 6634 and 6644 may be adjacent to the inclined portions 5322 and 5324.

[0288] The following describes in detail the combination structure of the upper cover 62 and the filter cover 66 with reference to the accompanying drawings.

[0289] Figure 23 This is a longitudinal sectional view of the upper cover and filter cover in their combined state. Furthermore, Figure 24 yes Figure 23 An enlarged view of part A. Furthermore... Figure 25 yes Figure 4 25-25 sectional perspective view.

[0290] As shown in the figure, the filter cover 66 can be inserted from below the opening of the upper cover 62 and can be installed to cover the upper opening 6270. With the filter cover 66 installed on the upper cover 62, the water inlet 663 and water outlet 664 can be exposed to the top surface of the opening of the upper cover 62. Furthermore, when the filter 60 is installed, the exposed water inlet 663 and water outlet 664 can be inserted into the water inlet hole 5321 and water outlet hole 5323. The water inlet 663 and water outlet 664 have elliptical cross-sections, and the outer surfaces of the water inlet and water outlet can be in contact with the inner surfaces of the water inlet hole 5321 and water outlet hole 5323 or the water inlet ring 541 and water outlet ring 542 to achieve an airtight seal. Therefore, the outer surfaces of the water inlet 663 and water outlet 664 can be referred to as sealing portions.

[0291] When the filter cover 66 is inserted into the upper cover 62, it can be supported from below by the support protrusion 6211. Therefore, the filter cover 66 will not detach from the upper cover 62 and will remain in the installed state.

[0292] The outer surface of the filter cover 66, which forms a step, and the inner surface of the upper cover 62 can be configured correspondingly to each other. Furthermore, the filter cover 66 and the upper cover 62 can remain airtight while rotating relative to each other via the sealing member 67.

[0293] Specifically, in the upper cover 62, the first protrusion 627 protrudes inwards from the upper cover 62, and the second protrusion 628 protrudes from the lower end of the first protrusion 627 toward the center of the upper cover 62. The first protrusion 627 may protrude further toward the center of the upper cover 62 than the second protrusion 628. Furthermore, the first protrusion 627 and the second protrusion 628 may form a step with each other. Additionally, the sealing member 67 may be disposed at the stepped portion of the first protrusion 627 and the second protrusion 628.

[0294] As an example, the first protrusion 627 may include: a first inner surface 6271 forming the top surface of the first protrusion 627; a second inner surface 6272 extending downward from the inner end of the first inner surface 6271 and forming the upper opening 6270; a third inner surface 6273 formed obliquely at the lower end of the second inner surface 6272; and a fourth inner surface 6274 formed at the end of the third inner surface 6273 alongside the second inner surface 6272 to form the bottom surface of the first protrusion 627.

[0295] Furthermore, the second protrusion 628 may include: a fifth inner surface 6281 forming the inner side surface of the second protrusion 628; a sixth inner surface 6282 formed obliquely at the lower end of the fifth inner surface 6281; and a seventh inner surface 6283 extending from the lower end of the sixth inner surface 6282 to form the bottom surface of the second protrusion 628.

[0296] The seal 67 can be formed in the shape of an O-ring and can be configured to contact the fourth inner surface 6274 and the fifth inner surface 6281. In particular, when the upper cover 62 rotates, the seal 67 can be restricted from moving upward and outward to maintain its position and maintain an airtight seal between the upper cover 62 and the filter cover 66.

[0297] The inner frame 661 at the lower end of the filter cover 66 can be located below the second protrusion 628, i.e., the seventh inner surface 6283, and can be closer to the outer side than the fifth inner surface 6281. Therefore, the filter cover 66 can be restricted by the inner frame 661 to move upward and downward in the direction of the second protrusion 628. At this time, the contact protrusion 6613 formed on the top surface of the inner frame 661 contacts the seventh inner surface 6283, thereby enabling the upper cover 62 to rotate smoothly.

[0298] Furthermore, the first step portion 6661 and the second step portion 6662 may be formed above the inner frame 661. The first step portion 6661 and the second step portion 6662 may be configured to connect with the first protrusion 627 and the second protrusion 628, respectively.

[0299] As an example, the first stepped portion 6661 may include: a first outer surface 6663 opposite to the second inner surface 6272; a second outer surface 6664 extending obliquely from the lower end of the first outer surface 6663 and opposite to the third inner surface 6273; and a third outer surface 6665 extending downward from the lower end of the second outer surface 6664 and opposite to the fifth inner surface 6281. In this case, the second outer surface 6664 and the fifth inner surface 6281 may be spaced apart from each other in the left-right direction, and the sealing member 67 may be disposed between the second outer surface 6664 and the fifth inner surface 6281.

[0300] Furthermore, the second step portion 6662 may include a fourth outer surface 6666 extending from the lower end of the third outer surface 6665 and opposite the fourth inner surface 6274. The fourth inner surface 6274 and the fourth outer surface 6666 may be spaced apart from each other in the vertical direction, and the seal 67 may be disposed between the fourth inner surface 6274 and the fourth outer surface 6666. Additionally, the second step portion 6662 may include a fifth outer surface 6667 extending downward from the end of the fourth outer surface 6666. The fifth outer surface 6667 may be opposite the fifth inner surface 6281 and may extend downward to a height corresponding to the seventh inner surface 6283.

[0301] On the other hand, the sealing member 67 can be supported in the front-back and left-right directions by the first protrusion 627, the second protrusion 628, the first step 6661, and the second step 6662, thus ensuring an airtight seal between the filter cover 66 and the upper cover 62 and preventing water leakage. Furthermore, through the sealing member 67, the first protrusion 627 and the second protrusion 628 can be adjacent to the first step 6661 and the second step 6662, but not directly pressed against each other, thus allowing the upper cover 62 to rotate.

[0302] Furthermore, the peripheral surface of the filter cover 66, which has the inner frame 661, the first step portion 6661 and the second step portion 6662, can be pressurized towards the inner surface of the cover 600 under the water pressure of the second space 6651 inside the cover 600. Therefore, the airtightness between the upper cover 62 and the filter cover 66 can be formed more effectively.

[0303] In particular, the inner surface 667 of the filter cover 66 forming the second space 6651 may include an inwardly inclined surface 6672. The inwardly inclined surface 6672 may be formed at a position opposite to the seal 67. Furthermore, the inwardly inclined surface 6672 may be configured to extend further downwards and outwards. In this case, the normal intersecting the inwardly inclined surface 6672 may be formed to pass through the center of the seal 67. Therefore, if water is supplied to the filter 60, causing an increase in pressure inside the housing 600, especially in the second space 6651, the inwardly inclined surface 6672 is pressurized to press the seal 67 outwards, reducing the gap between the filter cover 66 and the upper housing 62, thereby further increasing airtightness.

[0304] The inner surface of the filter cover 66 may further include a first vertical surface 6671 extending upward from the upper end of the inner inclined surface 6672 and a second vertical surface 6673 extending downward from the lower end of the inner inclined surface 6672. The first vertical surface 6671 and the second vertical surface 6673 may be perpendicular to the top surface of the filter cover 66.

[0305] The installation process of the filter 60 having the above structure will be described below with reference to the accompanying drawings.

[0306] Figure 26 This is an exploded perspective view of the alignment state for incorporating the filters, viewed from one side. Furthermore, Figure 27 This is an exploded perspective view of the aligned state for incorporating the filters, viewed from another side. Furthermore, Figure 28 This is a longitudinal cross-sectional view of the head separated from the filter.

[0307] As shown in the figure, the upper end of the filter 60 can be inserted through the bottom surface of the opening of the head 50.

[0308] The filter 60 may have a structure in which it is attached to the head body 52 by rotating the cover 600 relative to the filter cover 66. Therefore, for the filter 60 to be installed correctly, the inlet 663 and the outlet 664 need to be kept aligned with the inside of the cover 600.

[0309] When viewed from above, the filter 60 can be aligned between the first guide protrusion 625 and the second guide protrusion 626 located on both sides. More specifically, the water inlet 663 and the water outlet 664 can be arranged side-by-side on the extension line connecting the first guide protrusion 625 and the second guide protrusion 626. Therefore, when viewed from above, the user can easily visually confirm that the filter 60 is aligned for installation on the head 50.

[0310] In particular, when the filter 60 is aligned for installation on the head, the inlet 663 and outlet 664 can be aligned with the marking portion 6275 formed on the outside of the upper opening 6270. Furthermore, the marking portion 6275 can be on the same line as the short axis of the inlet 663 or the inlet contact portion 6632 of the inlet 663. Therefore, the user can more accurately determine the alignment status of the filter 60 through the configuration of the marking portion 6275 and the inlet contact portion 6632.

[0311] Furthermore, the marking portions 6275 can also be formed on the left and right sides and the top and bottom sides. The marking portions 6275 on the left and right sides can visualize the alignment status of the water inlet portion 663 and the water outlet portion 664, while the marking portions 6275 on the top and bottom sides can visualize the alignment status of the rotating protrusion 669 and the detection member 668. Therefore, the alignment status of the filter 60 can be accurately confirmed by the arrangement of the marking portions 6275 exposed on the top surface of the filter 60, the water inlet portion 663 and the water outlet portion 664, the rotating protrusion 669, and the detection member 668.

[0312] If the inlet 663 and outlet 664 are not aligned before the filter 60 is installed on the head 50, the user can rotate the filter cover 66 relative to the cover 600 to align the filter to the above-described state.

[0313] With the filter 60 aligned, the first guide protrusion 625 and the second guide protrusion 626 can be located on the left and right sides, respectively. Furthermore, to attach the filter 60 to the head, the user can position the first guide protrusion 625 and the second guide protrusion 626 below the first guide hole 5231 and the second guide hole 5241, which are open to the bottom surface of the head body 52. ​​In this case, the water inlet 663 and the water outlet 664, aligned with the filter 60, can be located below the water inlet hole 5321 and the water outlet hole 5323.

[0314] In the state described above, the filter 60 can be moved upwards to initiate its engagement with the head 50.

[0315] Figure 29 This is a diagram showing the state in which the filter begins to be inserted into the head. Furthermore, Figure 30 yes Figure 29 30-30 sectional view.

[0316] As shown in the figure, the upper end of the filter 60 can be inserted through the bottom surface of the opening of the head body 52. ​​When the filter 60 begins to attach to the head body 52, the first guide protrusion 625 can be inserted into the first guide 523, and the second guide protrusion 626 can be inserted into the second guide 524.

[0317] In particular, the first guide protrusion 625 is structurally inaccessible to the second guide member 524, thus preventing incorrect installation of the filter 60. Furthermore, the cross-sections of the water inlet 663 and the water outlet 664 are also directional, so that the water inlet 663 and the water outlet 664 can be inserted into the water inlet hole 5321 and the water outlet hole 5323 only when the first guide protrusion 625 is inserted into the first guide member 523 and the second guide protrusion 626 is inserted into the second guide member 524.

[0318] In detail, when inserted from below the first guide hole 5231 of the first guide member 523 into the interior of the first guide hole 5231, the protruding extension 6256 can be inserted through the gap G between the first guide member 5232 and the interior of the head 53.

[0319] That is, the first guide protrusion 625 can be inserted into the interior of the first guide member 523, and the protrusion extension 6256 can be inserted between the first guide portion 5232 and the interior of the head 53. As the first guide protrusion 625 is inserted into the first guide member 523, the first forward tilting portion 6253 or the first rearward tilting portion 6254 moves in contact with the first guide portion 5232.

[0320] At this time, the second guide protrusion 626 can be inserted into the interior of the second guide 524. That is, the first guide protrusion 625 and the second guide protrusion 626 can be inserted into and moved into the first guide 523 and the second guide 524 simultaneously.

[0321] On the other hand, if the user incorrectly installs the filter 60, the first guide protrusion 625 may attempt to insert into the second guide hole 5241. In this case, the protrusion extension 6256 cannot be inserted into the relatively narrow gap between the second guide portion 5242 and the head interior 53. Therefore, the first guide protrusion 625 cannot be inserted into the second guide 524. That is, the filter 60 can have a structure that allows installation only in a set configuration, thereby ensuring the accurate installation of the water inlet 663 and the water outlet 664.

[0322] Furthermore, the water inlet 663 and water outlet 664 can be inserted into the corresponding water inlet 5321 and water outlet 5323, respectively. At the instant the first guide protrusion 625 and the second guide protrusion 626 are inserted into the first guide 523 and the second guide 524, the water inlet 663 and water outlet 664 can be inserted into the water inlet 5321 and water outlet 5323, respectively.

[0323] At this time, since the water inlet 663 and the water outlet 664 are already aligned, no additional alignment work is required. Accurate installation can be achieved simply by inserting the first guide protrusion 625 and the second guide protrusion 626 into the first guide 523 and the second guide 524.

[0324] Furthermore, the rotating protrusion 669 and the detection member 668 can also be inserted into the inner side of the rotating groove 5329 and the detection hole 5237, respectively. In this case, the rotating protrusion 669 is in contact with the inner surface of the rotating groove 5329. Therefore, the torque generated when the cover 600 rotates will not be transmitted to the water inlet 663 and the water outlet 664, thereby ensuring the stable rotation of the cover 600.

[0325] Figure 31 This diagram shows the filter inserted into the head and rotated at a set angle. Furthermore, Figure 32 yes Figure 31 Sectional view 32-32.

[0326] As shown in the figure, the filter 60 can be rotated while inserted into the head 50 to complete its engagement with the head 50. At this time, the cover 600 can rotate and move upward with the filter cover 66 as a reference, and the filter cover 66 can move upward while engaged with the interior 53 of the head.

[0327] In detail, as the cover 600 rotates, the first guide protrusion 625 and the second guide protrusion 626 can move upwards along the first guide 523 and the second guide 524, respectively. For example, the first forward tilting portion 6253 or the first rearward tilting portion 6254 can move while maintaining contact with the first guide portion 5232. At this time, the protruding extension 6256 can move at a distance G between the first guide portion 5232 and the interior of the head 53.

[0328] As the cover 600 rotates, the first guide protrusion 625 and the second guide protrusion 626 can continuously move along the first guide 523 and the second guide 524. Furthermore, the water inlet 663 and the water outlet 664 can move upwards to insert into the water inlet hole 5321 and the water outlet hole 5323. The water inlet 663 and the water outlet 664 can move upwards via the water inlet ring 541 and the water outlet ring 542, respectively. Therefore, the periphery of the water inlet 663 and the water outlet 664 can be airtightly secured using the water inlet ring 541 and the water outlet ring 542.

[0329] The cover 600 can rotate before the first guide protrusion 625 and the second guide protrusion 626 are located at the ends of the first guide 523 and the second guide 524, so as to insert the water inlet 663 and the water outlet 664.

[0330] Furthermore, the rotating protrusion 669 and the detection member 668 can be further inserted into the rotating groove 5329 and the detection hole 5237, respectively. If the detection member 668 is fully inserted into the detection hole 5237, the filter detection device 55 can sense this and open the water supply valve 102 to start supplying water to the filter 60.

[0331] Figure 33 This is a front view of the filter and the head in their fully coupled state. Furthermore, Figure 34 This is a rear view showing the filter and head fully coupled. Furthermore, Figure 35 yes Figure 33 A longitudinal sectional view.

[0332] As shown in the figure, with the filter 60 fully engaged with the head body 52, the first guide protrusion 625 can be located at the upper end of the first guide 523. At this time, the first guide protrusion 625 can be located within the confirmation window 5211. The confirmation window 5211 can open forward, allowing the first guide protrusion 625 to protrude forward through it. Therefore, the user can confirm that the connecting rib 6255 is located in the center of the confirmation window 5211, and can visually confirm that the filter 60 is fully installed on the head 50.

[0333] Furthermore, with the filter 60 fully engaged with the head body 52, the second guide protrusion 626 can be located at the upper end of the second guide. Additionally, the second guide protrusion 626 can be located within the rear confirmation window 5212. In this case, the limiting portion 5213 can be engaged and limited by the limiting groove 6266 of the second guide protrusion 626. The limiting portion 5213 is formed in a ring-like shape, thus it can elastically deform when engaged or disengaged from the limiting groove 6266, and can be pressurized into the limiting groove 6266.

[0334] Specifically, at the instant the filter 60 and the head body 52 are fully engaged, the limiting groove 6266 and the limiting part 5213 can engage and restrict each other. Furthermore, the user can determine whether the filter 60 and the head 50 have been properly engaged by the clicking sound or vibration generated at this time. That is, even without directly visually confirming the confirmation window 5211, the user can determine whether the filter 60 has been successfully installed by the clicking sound and vibration generated when the cover 600 rotates.

[0335] Furthermore, when the filter 60 is engaged with the head body 52, the cover rib 6241 can be in contact with the lower end of the head body 52. ​​Therefore, the user can also determine whether the filter 60 is fully engaged by observing the gap between the cover rib 6241 and the head body 52.

[0336] On the other hand, when the filter 60 and the head body 52 are installed, the water inlet 663 and the water outlet 664 can be inserted into the water inlet hole 5321 and the water outlet hole 5323 at a set depth.

[0337] Furthermore, once the inlet section 663 and outlet section 664 are fully inserted into the inlet hole 5321 and outlet hole 5323, the interior of the filter 60 can communicate with the inlet flow path 5220 and outlet flow path 5251 of the head 50. Additionally, once the filter 60 is installed, the valve 56 and water supply valve 102 can be opened to supply water to the filter 60 for water purification.

[0338] Hereinafter, with reference to the accompanying drawings, the water flow state of the filter assembly 40 in the coupled state of the filter 60 will be described in detail.

[0339] Figure 36 This is a diagram showing the water flow with the filter and head fully engaged. Furthermore, Figure 37 This is a cross-sectional view showing the connection state of the inlet and outlet sections of the filter with the head fully engaged. Furthermore, Figure 38 A cross-sectional view showing the configuration of the inlet and outlet sections at the top of the filter.

[0340] As shown in the figure, if the filter 60 is combined with the head 50, the water inlet 663 and the water outlet 664 can be inserted into the water inlet 5321 and the water outlet 5323 respectively.

[0341] In detail, the upper end of the water inlet 663 can be located closer to the top via the water inlet ring 541. Furthermore, the upper end of the water inlet 663 can contact the contact portion 5633, causing the piston 563 to move upwards, thereby opening the housing passage 5615.

[0342] Water supplied via the inlet flow path 5220 can flow into the piston receiving portion 5610 through the cap through-hole 5623. The piston receiving portion 5610 is elliptical in shape, thereby ensuring a flow path space S between it and the seat portion 5631. Furthermore, when the piston 563 is moving upward, water flows through the housing via the flow path space S and then into the inlet receiving portion. Additionally, water flowing into the inlet receiving portion 5616 can be supplied into the filter 60 through the inlet flow path 6631 of the inlet portion 663 inserted into the inlet receiving portion 5616. Therefore, water flowing into the inlet pipe 103 flows into the interior of the filter 60 via the inlet flow path 5220 of the head 50, the valve 56, and the inlet flow path 6631.

[0343] Furthermore, the flow path into the interior of the filter 60 can be guided to the outside of the filter member 63 through the first space 6610. Additionally, water outside the filter member 63 moves through the filter member 63 towards its hollow interior. At this time, the water can be purified as it passes through the filter member 63. The purified water can flow upwards through the hollow interior 631 towards the second space 6651 and is discharged through the outlet 664.

[0344] The upper end of the water outlet 664 can be located closer to the top than the water outlet ring 542. Therefore, the purified water from the filter 60 can flow through the water outlet 664 into the water outlet path 5251 and be discharged to the outside through the water outlet pipe 104.

[0345] During the flow of water through the filter 60, the peripheries of the inlet portion 663 and the outlet portion 664 can be airtightly sealed by the inlet ring 541 and the outlet ring 542 to prevent leakage. For this purpose, the height H1 of the inlet portion 663 and the outlet portion 664 can be formed to extend higher than the height H2 of the inlet ring 541 and the outlet ring 542, with reference to the top surface of the filter cover 66.

[0346] As an example, the height H2 of the inlet ring 541 and the outlet ring 542 can be located slightly higher than the midpoint of the vertical height H1 of the inlet section 663 and the outlet section 664. Furthermore, the inlet ring 541 and the outlet ring 542 can be located at a predetermined distance from the upper ends of the inlet section 663 and the outlet section 664.

[0347] Furthermore, at least the portions of the periphery of the water inlet 663 and the water outlet 664 passing through the water inlet ring 541 and the water outlet ring 542 can be formed with an elliptical cross-section corresponding to the water inlet 663 and the water outlet 664. Therefore, the water inlet 663 and the water outlet 664 are airtight and leak-proof, thereby ensuring water flow within the head 50.

[0348] After purifying water or purifying a set flow rate for a set time, the filter 60 can be detached from the head 50 and a new filter 60 can be installed. To detach the filter 60 from the head 50, the cover 600 can be rotated and moved downwards in the reverse order of the above process. At this time, with the reverse rotation of the filter 60, the inlet 663 and outlet 664 move downwards, thereby disengaging from the inlet hole 5321 and outlet hole 5323. Furthermore, the valve 56 can be returned to a closed state due to the downward movement and detachment of the inlet 663, preventing water flowing in through the inlet pipe 103 from leaking to the outside of the head 50.

[0349] On the other hand, such as Figure 38 As shown, the water inlet 663 and water outlet 664 can be configured compactly and efficiently within the limited inner area of ​​the cover 600. Specifically, the water inlet 663 and water outlet 664 are disposed inside the upper opening 6270.

[0350] Furthermore, the inlet 663 and outlet 664 need to be entirely positioned on the top surface 662 of the filter cover 66, which protrudes towards the upper opening 6270, thus forming a flow path connecting the interior of the cover 600 and the head 50. In this case, the arrangement direction of the inlet 663 and outlet 664, which have elliptical cross-sections, ensures smooth flow of water through the filter 60.

[0351] In detail, the water inlet 663 can be configured such that the major axis L1 of its elliptical cross-section faces forward and backward. The water inlet 663 can have a structure where the water inlet outlet 6633 communicates with the first space 6610 separated from the center of the filter member 63. Therefore, in the above structure, the major axis L1 of the elliptical cross-section of the water inlet 663 is arranged in the forward and backward direction. Thus, the water inlet 663 communicates with the second space 6651 with the largest possible area, allowing water to flow smoothly through the water inlet 663. Furthermore, due to the orientation of the elliptical cross-section of the water inlet 663, interference with the inclined inner surface of the filter cover 66 is minimized, allowing water to flow smoothly through the narrow space towards the periphery of the filter member 63.

[0352] If the major axis L1 of the elliptical cross-section of the water inlet 663 is formed along the left-right direction, the area overlapping with the first space 6610 is reduced, thereby decreasing the water intake efficiency. Furthermore, if the flow path of the water inlet outlet 6633 communicating with the first space 6610 is excessively tortuous, water may not be able to flow smoothly into the first space 6610.

[0353] Furthermore, when the major axis L1 of the elliptical cross section of the water inlet 663 is formed along the left-right direction, the area overlapping with the second space 6651 is unnecessarily increased to accommodate the function of the water inlet 663, thus hindering the discharge of clean water through the second space 6651 and obstructing the flow of discharged water.

[0354] Furthermore, the water outlet 664 can be configured such that the major axis L2 of the elliptical cross-section faces left and right. The water outlet 664 has a structure that connects the water outlet inlet 6643 to the second space 6651 for discharging purified water. In the configuration described above, the major axis L2 of the elliptical cross-section of the water outlet 664 can face left and right. Therefore, the water outlet 664 communicates with the second space 6651 with the largest possible area, allowing water to be smoothly discharged through the water outlet 664.

[0355] That is, the width W of the second space 6651 from which the water purified by the filter element 63 flows out. F Based on this, the water outlet 664 may have a maximum width W L The water inlet 663 can have a configuration direction that overlaps with the second space 6651, and can be configured with a minimum width W. S The configuration direction overlaps with the second space 6651. Furthermore, the configuration direction of the water inlet 663 can overlap with the first space with a maximum area. As described above, the elliptical cross-sectional shapes of the water inlet 663 and the water outlet 664 are directional to provide an efficient configuration for water inlet and outlet.

[0356] Furthermore, because the elliptical cross-sectional shapes of the water inlet 663 and the water outlet 664 are arranged in directions intersecting each other, the filter cover 66 can be firmly attached to the head 50 in all directions, making it easier to generate torque for the rotating cover 600. Moreover, because the elliptical cross-sectional shapes of the water inlet 663 and the water outlet 664 are directional, even during the rotation of the cover 600, displacement of the filter cover 66 in the front-back, rear-side, left-right directions can be prevented, thus preventing leakage from the water inlet 663 and the water outlet 664.

[0357] Furthermore, when viewed from above, the elliptical cross-sectional shape of the water inlet 663 and the water outlet 664 is directional, thus allowing for accurate determination of the alignment of the water inlet 663 and the water outlet 664. When combined with the head 50, the water inlet 663 and the water outlet 664 can be guided to combine and insert in the correct direction.

[0358] On the other hand, in addition to the embodiments described above, the present invention can also be implemented in various other embodiments.

Claims

1. A water filter, wherein the water filter is detachably coupled to a head connected to a water supply source, wherein, The water filter includes: The cover has an upward-opening top. A filter cover is disposed on the cover body, covering the upper opening, forming an inlet for water to flow in and an outlet for water to flow out; A filter element, housed within the enclosure, is used for purifying water; and A sealing element is disposed between the cover and the filter cover to ensure an airtight seal between the cover and the filter cover when the cover is rotated; When the cover is attached to the head, the cover rotates relative to the filter cover and the filter member.

2. The water filter according to claim 1, wherein, The cover includes: The upper cover, forming the upper part of the cover, has the upper opening; and The lower cover is combined with the lower part of the upper cover to form the lower part of the cover; A guide protrusion is formed on the periphery of the upper cover to rotate with the head.

3. The water filter according to claim 2, wherein, The upper cover includes: The lower part is combined with the lower cover; and The upper part, forming the upper part of the upper cover, is inserted into the inside of the head; The guide protrusion protrudes from the outer surface of the upper portion. The upper opening is an upward opening inside the upper portion.

4. The water filter according to claim 1, wherein, An upper support member is provided at the upper end of the filter component to connect the filter component and the filter cover. The cover rotates about the center of the filter component and the upper support component.

5. The water filter according to claim 1, wherein, The cover has a protrusion that extends toward the center of the cover to form the upper opening. The filter cover includes a stepped portion, which forms a step along the periphery of the filter cover and is disposed below the protrusion. The seal is disposed between the protrusion and the stepped portion.

6. The water filter according to claim 5, wherein, A downwardly projecting limiting protrusion is formed in the protrusion. A limiting groove is formed in the filter cover, the limiting groove being recessed along the periphery of the filter cover, and the limiting groove being for the insertion of the limiting protrusion. The limiting groove is formed to connect with the limiting protrusion when the cover begins to rotate and ends to rotate.

7. The water filter according to claim 5, wherein, The filter cover has a plurality of contact protrusions, which protrude upwards and connect with the lower part of the protrusions, thereby separating the filter cover from the cover body.

8. The water filter according to claim 1, wherein, The inlet section and the outlet section are formed with elliptical cross sections relative to at least a portion of their respective overall length. The water inlet is configured to rotate by a set angle based on the configuration direction of the water outlet.

9. The water filter according to claim 8, wherein, When viewed from above, the water inlet and the water outlet are... The long axis of the water inlet and the long axis of the water outlet extend in directions that intersect each other.

10. The water filter according to claim 8, wherein, The cover has guide protrusions that rotate and engage with the head during installation of the water filter. The guide protrusions are positioned on both sides of the filter cover. The water inlet and the water outlet are positioned between guide protrusions located on both sides.

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