Water filter

Abstract

The present invention relates to a water filter which is detachably coupled to a head connected to a water supply source, and which is characterized by comprising: a cover body which is coupled to the head by means of rotation and which has an upper opening that opens upward; a filter member which is accommodated inside the cover body and purifies water; the filter cover shields the upper opening and relatively rotates in the cover body; and a sealing member which enables the space between the cover body and the filter cover to be airtight. The filter cover includes: a water inlet portion into which water flows; a water outlet part through which water flows out; and a sensing member that protrudes upward from a position corresponding to a filter sensing device provided on the head and is sensed by the filter sensing device. If the cover body is combined with the head part through rotation, the water inlet part, the water outlet part and the sensing component linearly move upwards in the head part.

Description

TECHNICAL FIELD

[0001] The present invention relates to a water filter. BACKGROUND

[0002] Generally, a filter device is used to purify supplied water, and can be used in water purifiers, ice machines, refrigerators, and the like home appliances.

[0003] In addition, in order to maintain the water purification performance, such a filter device needs to be periodically replaced, and is configured to have a structure that is easily replaced, so that a user can easily replace it whenever desired.

[0004] Generally, a filter device can include a head provided on a flow path of water flow and a filter detachably coupled to the head and having a filter cartridge for purifying water built therein. Depending on the kind of the filter cartridge, the filter device can have various water purification performances, and the filter device can be configured by a combination of a plurality of filters having filter cartridges of different kinds from each other.

[0005] On the other hand, the filter device can have a structure that facilitates mounting and separation, and in particular, prevents erroneous mounting through a coupling structure of the head and the filter, and various structures capable of achieving accurate mounting are being developed.

[0006] In addition, a filter device is being developed in which, during attachment and detachment of the filter to the head, an internal flow path of the head is switched using rotation of the filter, so that leakage does not occur even if the filter is detached.

[0007] However, such a filter device has a problem in that the flow path structure inside the head for switching the flow path is complicated. In addition, in the case where the switching of the flow path is repeatedly performed, the durability of the head is reduced, resulting in a problem in that leakage occurs. SUMMARY

[0008] An object of an embodiment of the present invention is to provide a water filter capable of securing use of an authenticated filter.

[0009] An object of an embodiment of the present invention is to provide a water filter capable of determining water supply by sensing installation of a filter.

[0010] An object of an embodiment of the present invention is to provide a water filter capable of preventing leakage when the filter is attached and detached.

[0011] An object of the present invention is to provide a water filter in which a filter sensing device is easily mounted and repaired.

[0012] The water filter of the present application can include a cover body which is coupled to a head portion of a water supply, a filter member which is accommodated in the cover body and purifies water, a filter cover which is rotatably coupled to the cover body and covers the upper opening, and a sealing member which seals the cover body and the filter cover.

[0013] The sensing member can be positioned to be close to the filter sensing device as the cover body is rotated.

[0014] The water inlet portion and the water outlet portion can be positioned to protrude in the same direction as the sensing member.

[0015] The sensing member can be positioned to be lower than the water inlet portion and the water outlet portion.

[0016] At least a portion of the sensing member can be formed of a magnet which is positioned on a top surface of the sensing member.

[0017] The water inlet portion and the water outlet portion can be positioned to be spaced apart from each other, and the sensing member can be positioned between the water inlet portion and the water outlet portion.

[0018] A fastening groove can be formed on a top surface of the filter cover, and a fastening portion which is inserted into the fastening groove can be formed on a lower end of the sensing member, such that the sensing member can be coupled to and decoupled from the filter cover.

[0019] The sensing member can be formed of a magnetic material, and can be positioned on a top surface of the filter cover.

[0020] The water filter of the present application can include a cover body which accommodates a filter member an upper opening which is open upward, and a filter cover which is rotatably positioned in the cover body and covers the upper opening. The filter cover can include a water inlet portion which protrudes upward and allows water to flow in, a water outlet portion which protrudes upward from a position spaced apart from the water inlet portion and allows water to flow out, a rotation protrusion which protrudes upward and fixes the filter cover, and a sensing member which protrudes upward from a position spaced apart from the rotation protrusion and is used for sensing installation. The sensing member and the rotation protrusion can be positioned between the water inlet portion and the water outlet portion.

[0021] The extension lines of the water inlet portion and the water outlet portion can cross each other with the extension lines of the rotation protrusion and the sensing member.

[0022] A pair of guide protrusions for attaching and detaching the water filter can be formed on the outer surface of the cover, and the pair of guide protrusions can be configured to face each other.

[0023] The water inlet portion and the water outlet portion can be disposed between the pair of guide protrusions and can be disposed on the same extension line as the pair of guide protrusions.

[0024] Before the water filter is installed, the pair of guide protrusions can be disposed on the same extension line as the water inlet portion and the water outlet portion, and when the cover is rotated to install the water filter, the pair of guide protrusions can be disposed on the same extension line as the rotation protrusion and the sensing member.

[0025] The water inlet portion, the water outlet portion, the rotation protrusion, and the sensing member can be formed lower than the upper end of the cover.

[0026] The water inlet portion and the water outlet portion can be disposed apart in left and right directions with the center of the filter cover as a reference between the pair of guide protrusions, and the rotation protrusion and the sensing member can be disposed apart in front and back directions with the center of the filter cover as a reference.

[0027] The water inlet portion and the water outlet portion can have an elliptical cross-sectional shape when viewed from above, but the major axis of the water inlet portion and the major axis of the water outlet portion can be disposed in directions offset from each other.

[0028] In addition, the home appliance having a water filter according to an embodiment of the present disclosure can include a cabinet, a head provided to the cabinet and connected to a water supply source, and a water filter attachable and detachable to the head, the water filter can include a filter member for purifying water, a cover accommodating the filter member and rotationally coupled to the head, and a filter cover disposed inside the cover to be rotatable with respect to the cover and protruding upward to form a water inlet portion and a water outlet portion through which water flows, the filter cover can be provided with a sensing member protruding upward, the head can be provided with a filter sensing device sensing the sensing member when the filter is installed, and if the cover is coupled to the head by rotation, the water inlet portion, the water outlet portion, and the sensing member can move linearly upward inside the head.

[0029] At least a portion of the sensing member can be formed of a magnet, and the filter sensing device can be constituted of a Hall sensor sensing a change in a magnetic field.

[0030] The head can include a head body having an open bottom surface to be coupled with the cover body, and a head inner portion to be coupled through the open bottom surface of the head body, and the filter sensing device can be disposed between the head body and the head inner portion.

[0031] The bottom surface of the head inner portion can include a water inlet hole into which the water inlet portion is inserted, a water outlet hole into which the water outlet portion is inserted, and a sensing hole into which the sensing member is inserted, and the filter sensing device can be disposed at a position corresponding to the sensing hole.

[0032] The filter sensing device can include a sensing portion disposed at a position opposite to the sensing member, and the sensing portion can be closer to an upper side than the sensing hole.

[0033] The sensing member can be injection-molded in a shape corresponding to the sensing hole, and a receiving portion opened upward can be formed at a top surface of the sensing member to be able to insert a magnet.

[0034] The head body can be formed with a sensing device mounting portion opened downward, the filter sensing device can be inserted through the opening, and the head inner portion can support the filter sensing device inserted into the sensing device mounting portion from a lower side.

[0035] A guide protrusion to be coupled with the head can be provided at a peripheral edge of the cover body, and the guide protrusion can be inserted into a space between an inner surface of the head body and the head inner portion.

[0036] A water supply flow path connecting the water supply source and the head can be further included, a water supply valve can be provided at the water supply flow path, the water supply valve can be opened when the filter sensing device senses the sensing member, and the water supply valve can be closed when the filter sensing device does not sense the sensing member.

[0037] If the filter sensing device does not sense the sensing member, a state that the filter is not sensed can be output through any one of a display, a speaker, and a remote device.

[0038] The water filter according to the embodiment of the present application has the following effects.

[0039] The filter has a sensing member, and thus, when the filter is installed, the filter can be recognized by the filter sensing device. Accordingly, in the case of another filter using a non-authenticated filter, the installation of the filter is not recognized by the filter sensing device, and thus, it has an advantage that a performance degradation caused by the use of the non-authenticated filter can be prevented.

[0040] Further, a water supply valve selectively opening and closing a water supply flow path is opened and closed by a filter sensing device sensing a sensing member of the filter. Thus, in a state in which the filter sensing device does not sense the filter, water supply is blocked, thereby having an advantage of being able to prevent water leakage or damage to the home appliance caused by water leakage.

[0041] Further, even without an additional operation, the filter sensing device senses installation of the filter when the filter is installed and removed, thereby being able to improve convenience of use.

[0042] Further, in a state in which the filter is completely installed, installation of the filter is sensed by the sensing member, and separation of the filter is sensed when separation of the filter is started. Thus, it has an advantage of being able to fundamentally prevent water leakage during insertion or separation of the water inlet portion and the water outlet portion during installation and removal of the filter.

[0043] Further, the filter sensing device is inserted from below the head main body, and the filter sensing device can be supported from below by a head interior combined with the head main body. That is, a structure such as a fastening member for installing the filter sensing device is not required, and the filter sensing device can be stably fixed only by assembly of the head interior. Thus, it has an advantage of being able to improve assembly workability and easily replace or repair the filter sensing device when the filter sensing device is abnormal.

[0044] Further, the filter sensing device can be provided inside a sensing hole of the head, and the sensing member of the filter can be sensed in a non-contact manner. Thus, during installation and removal of the filter, an impact is not directly or indirectly transmitted to the filter sensing device, and erroneous operation caused by damage or dislocation of the filter sensing device does not occur, thereby having an advantage of being able to ensure reliable operation. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a front view of a refrigerator according to a first embodiment of the present application.

[0046] Figure 2 is a view showing a flow path structure for water supply of the refrigerator.

[0047] Figure 3 is a perspective view of a filter according to the first embodiment of the present application combined with a head.

[0048] Figure 4 is an exploded perspective view of the filter separated from the head.

[0049] Figure 5 is an exploded perspective view of a model of the head separated from above.

[0050] Figure 6 is a perspective view of the head from below.

[0051] Figure 7 is a perspective view of the head from behind.

[0052] Figure 8 is a bottom view of the head.

[0053] Figure 9 is a 9-9 sectional view of Figure 4

[0054] Figure 10 is a 10-10 perspective view of Figure 3

[0055] Figure 11 is an exploded perspective view of a valve that is a component of the head.

[0056] Figure 12 is a 12-12 sectional perspective view of Figure 3

[0057] Figure 13 is an exploded perspective view of an exploded pattern of the head from below.

[0058] Figure 14 is a sectional exploded perspective view of the head.

[0059] Figure 15 is a 15-15 sectional perspective view of Figure 4

[0060] Figure 16 is an exploded perspective view of a filter.

[0061] Figure 17 is a top view of the filter.

[0062] Figure 18 is a side view of an upper portion of the filter from one side.

[0063] Figure 19 is a side view of an upper portion of the filter from another side.

[0064] Figure 20 is a 20-20 sectional perspective view of Figure 16

[0065] is a perspective view of a filter cover of the filter from above. Figure 21

[0066] is a side view of the filter cover. Figure 22

[0067] ​​​​​Figure 23 yes Figure 21 23-23 sectional perspective view.

[0068] Figure 24 yes Figure 21 24-24 sectional perspective view.

[0069] Figure 25 yes Figure 4 25-25 sectional perspective view.

[0070] Figure 26 This is a longitudinal sectional view of the upper cover and the filter cover in their combined state.

[0071] Figure 27 yes Figure 26 Enlarged view of part A.

[0072] Figure 28 yes Figure 4 28-28 sectional perspective view.

[0073] Figure 29 This is an exploded perspective view of the alignment state for incorporating the filter, viewed from one side.

[0074] Figure 30 This is an exploded perspective view of the alignment state for incorporating the filter, viewed from the other side.

[0075] Figure 31 This is a longitudinal cross-sectional view of the head separated from the filter.

[0076] Figure 32 This is a diagram showing the state in which the filter begins to be inserted into the head.

[0077] Figure 33 yes Figure 32 Sectional view 33-33.

[0078] Figure 34 This is a cross-sectional view showing the configuration of the sensing device and sensing components as the filter begins to be inserted into the head.

[0079] Figure 35 This is a diagram showing the filter inserted into the head and rotated at a set angle.

[0080] Figure 36 yes Figure 35 Sectional view 36-36.

[0081] Figure 37 This is a front view of the state where the filter and the head are fully integrated.

[0082] Figure 38is a rear view of a state in which the filter is completely combined with the head.

[0083] Figure 39 is Figure 37 a longitudinal sectional view.

[0084] Figure 40 is a sectional view showing the configuration of the sensing means and sensing members in a state in which the filter is completely inserted into the head.

[0085] Figure 41 is a diagram showing the flow of water in a state in which the filter is completely combined with the head.

[0086] Figure 42 is a sectional view showing the connection state of the water inlet portion and the water outlet portion in a state in which the filter is completely combined with the head.

[0087] Figure 43 is a block diagram showing the flow of a control signal of the home appliance according to an embodiment of the present application.

[0088] Figure 44 is a flowchart showing a control method according to whether a filter of the home appliance is recognized or not. DETAILED DESCRIPTION

[0089] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. However, the present application is not limited to the embodiments disclosed to represent the idea of the present application, and other applications or embodiments within the scope of the idea of the present application can be easily suggested by addition, alteration, etc. of other constituent elements.

[0090] Directions are defined before explanation. In the embodiments of the present application, a direction toward the head in Figure 3 may be called an upper direction, a direction toward the filter can be called a lower direction, a direction toward the mounting member can be called a rear direction, and a direction away from the mounting member can be called a front direction. In addition, a central direction of the filter and the head can be called an inner direction, and a direction away from the center can be called an outer direction.

[0091] In addition, the embodiments of the present application are described taking a refrigerator as an example among a plurality of home appliances, but it is previously explained that the filter of the embodiments of the present application is not limited to a structure and a form of a water purifier, an ice maker, etc., and can be applied to various home appliances requiring purified water.

[0092] Figure 1 is a front view of a refrigerator according to a first embodiment of the present application. In addition, Figure 2 is a diagram showing a flow path structure for water supply of the refrigerator.

[0093] As shown, the refrigerator 1 of the embodiment of the present application can form an appearance by a cabinet 10 forming a storage space and a door 20 opening and closing the storage space of the cabinet 10.

[0094] The storage space can include a refrigerating chamber 11 disposed at an upper portion of the cabinet 10 and a freezing chamber 12 disposed at a lower portion of the cabinet 10.

[0095] The door 20 can include a refrigerating chamber door 21 and a freezing chamber door 22 independently opening and closing the refrigerating chamber 11 and the freezing chamber 12, respectively. The refrigerating chamber door 21 can be provided with a pair of doors at both left and right sides, and can be configured to open and close the refrigerating chamber 11 by rotation.

[0096] In addition, the freezing chamber door 22 can have a structure like a drawer, and can be configured to open and close the freezing chamber 12 by introduction and extraction.

[0097] According to the configuration of the storage space and the kind and form of the refrigerator opening and closing the storage space, various structures can be provided, and for the convenience of explanation and understanding, the embodiment of the present application is explained based on a refrigerator in which the refrigerating chamber is disposed above the freezing chamber and opened and closed by a pair of doors.

[0098] The door of either side of the pair of refrigerating chamber doors 21 can be provided with a dispenser 23 and an ice maker 241. The ice maker 241 can also be provided inside the refrigerating chamber 11 or the freezing chamber 12, instead of the refrigerating chamber door.

[0099] The dispenser 23 can be provided at the front of the refrigerating chamber door 21, and can be configured to extract water or ice cubes from the outside by user manipulation. In addition, an ice making chamber 24 is provided above the dispenser 23. The ice making chamber 24 is a heat-insulated space for manufacturing and storing ice, and can accommodate the ice maker 241 inside, and can be configured to be opened and closed by an additional door.

[0100] In addition, the ice maker 121 can also be provided inside the freezing chamber 12. When the freezing chamber door 22 is opened, the ice maker 121 can be approached, and ice cubes manufactured in the ice maker 121 can be extracted.

[0101] In order to distinguish the ice maker 121 provided in the freezing chamber 12 from the ice maker 241 provided in the refrigerating chamber door 21, the ice maker 241 provided in the refrigerating chamber 11 can be referred to as a first ice maker 241, and the ice maker 121 provided in the freezing chamber 12 can be referred to as a second ice maker 121.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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. For example, the water supply valve 102 may be located inside the mechanical compartment where the compressor and condenser are located. 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.

[0106] On the other hand, the water supply valve 102 can utilize the filter sensing device described later. Figure 4 The action is determined by (55) in the middle. That is, with the filter 60 installed, the water supply valve 102 senses the magnet (55) installed on the filter 60. Figure 4 The filter 60 is opened by opening the filter 6681, and the water supply valve 102 is closed when the filter 60 is disconnected, thereby fundamentally preventing water leakage when the filter 60 is not installed or is incorrectly installed.

[0107] The water supply valve 102 can be configured in other locations on the refrigerator 1 as needed. Furthermore, the water supply valve 102 can be configured in various other locations on the water supply path 100 connected to the filter assembly 40, and its location can be determined to match the structure of the applicable household appliance.

[0108] 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.

[0109] In addition, the water outlet pipe 104 can be branched using a branch valve 105. As an example, the water outlet pipe 104 can include a first water outlet pipe 1041 supplying purified water to the dispenser 23 and the first ice maker 241 and a second water outlet pipe 1042 supplying purified water to the second ice maker 121.

[0110] On the other hand, the filter assembly 40 can be provided in the refrigerating chamber 11. As an example, the filter assembly 40 can be provided in a corner of one side of the top surface of the refrigerating chamber 11. As another example, the filter assembly 40' can also be provided in the rear of a storage member such as a drawer or a shelf of the refrigerating chamber 11 or be blocked by the storage member. As still another example, the filter assembly 40" can also be provided in the refrigerating chamber door 21.

[0111] On the other hand, the filter assembly 40 can be configured to be easily replaced with a filter 60 that actually implements purified water. As an example, a filter device 30 can be provided in the refrigerating chamber 11. The filter device 30 can be configured to be approachable when the refrigerating chamber door 21 is opened.

[0112] The filter device 30 can include a housing 31 and a cover 32. The housing 31 can be provided in the top surface of the cabinet 10. In addition, the housing 31 can form a space in the inside thereof in which the filter assembly 40 is disposed. The cover 32 can open and close the housing 31 using rotation. The filter assembly 40 can be exposed to the outside using the opening of the cover 32. The filter assembly 40 can include the filter 60 and the head 50. In addition, when the cover 32 is opened, the filter 60 can be exposed to the front and be in a state in which it is easily attached and detached. The filter 60 can be referred to as a water filter for purified water, and hereinafter, will be referred to as a filter for convenience of explanation.

[0113] Hereinafter, the structure of the filter assembly 40 will be described in detail with reference to the accompanying drawings.

[0114] Figure 3 is a perspective view of a filter according to a first embodiment of the present application combined with a head. In addition, Figure 4 is an exploded perspective view of the filter separated from the head.

[0115] As shown in the drawing, the filter assembly 40 can include a head 50 for mounting the filter assembly 40 and a filter 60 detachably mounted to the head 50.

[0116] As an example, the head 50 can 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 a corresponding position. As an example, the mounting member 51 can be fixed to one side of the refrigerating chamber 11. On the other hand, in the case where the refrigerator 1 is provided with a structure for mounting the head 50, the mounting member 51 can be omitted, and the head 50 can also be composed of the head body 52. That is, the head body 52 can also mean the head 50.

[0117] In addition, the head body 52 can be rotatably mounted to the mounting member 51. The head body 52 can be rotated with the mounting member 51 as a reference in a state where the filter 60 is mounted, and the filter 60 can be easily attached and detached.

[0118] The water inlet pipe 103 and the water outlet pipe 104 can be connected to both sides of the head body 52. The water inlet pipe 103 and the water outlet pipe 104 are connected to the head body 52 using a water inlet pipe joint 1031 and a water outlet pipe joint 1041, respectively. Thus, water flowing in from the water inlet pipe 103 through the water inlet pipe joint 1031 can be supplied to the filter 60 via the head body 52, and water purified in the filter 60 can be discharged to the water outlet pipe 104 via the head body 52 through the water outlet pipe joint 1041.

[0119] The filter 60 can include a cover 600 forming an appearance. In addition, the cover 600 can be detachably mounted to the head body 52. Further, the inside of the cover 600 can accommodate a filter cartridge (63) for purifying water. Figure 16 As an example, the cover 600 can include an upper cover 62 and a lower cover 61, and the inside of the upper cover 62 and the lower cover 61 can accommodate the filter cartridge 63.

[0120] The upper end of the filter 60 can be inserted into the bottom surface of the opening of the head 50 to be coupled to the head 50. As an example, a guide protrusion 625, 626 for guiding coupling to the head 50 can be formed on the outer surface of the upper cover 62. The upper cover 62 can be inserted into the inside of the head body 52, and the guide protrusion 625, 626 can be rotated and moved along the inner surface of the head body 52. That is, the cover 600 can be rotated during insertion and mounting to the head body 52.

[0121] The upper cover 62 can protrude upward with a water inlet portion 663 and a water outlet portion 664. In addition, if the filter 60 is coupled to the head 50, the water inlet portion 663 and the water outlet portion 664 can communicate with the flow path of the head 50. Accordingly, water supplied through the water inlet pipe 103 can be discharged to the water outlet pipe 104 after passing through the filter 60 and being purified.

[0122] Even if the cover 600 is rotated, the water inlet portion 663 and the water outlet portion 664 can maintain an aligned state and be coupled to the head 50. That is, when the filter 60 is installed, the water inlet portion 663 and the water outlet portion 664 can be moved upward and inserted into the water inlet hole (5321) and the water outlet hole (5323) of the head 50, respectively, and the cover 600 can be rotated and coupled to the head 50 with the water inlet portion 663 and the water outlet portion 664, respectively. Figure 6 Figure 6

[0123] Hereinafter, the head 50 will be described in detail with reference to the accompanying drawings.

[0124] Figure 5 is an exploded perspective view of the head. In addition, Figure 6 is a perspective view of the head viewed from below. In addition, Figure 7 is a perspective view of the head viewed from the rear. In addition, Figure 8 is a bottom view of the head.

[0125] As shown in the drawings, the head 50 can include the mounting member 51, the water inlet pipe 103, the water outlet pipe 104, and the head body 52.

[0126] The mounting member 51 serves to mount the installation of the filter assembly 40, and the head body 52 in which the filter 60 is installed is rotatably mounted to the mounting member 51. In detail, the mounting member 51 can include a mounting portion 511 that contacts an object to be mounted and a head coupling portion 512 that rotatably couples the head body 52.

[0127] The mounting portion 511 can form the rear surface of the mounting member 51 and can extend in the up-and-down direction. In addition, a screw can be fastened to the mounting portion 511 to fix the mounting member 51.

[0128] ​​The head connecting portions 512 can protrude forward from both sides of the mounting portion 511. The head body 52 can be disposed between the pair of head connecting portions 512. In detail, a pipe joint seating portion 513 in which the pipe joints 1031, 1041 are seated can be formed at the front end of the head connecting portion 512. Further, a seating portion opening 514 in which the pipe joints 1031, 1041 are axially coupled can be formed at the side of the pipe joint seating portion 513.

[0129] The water inlet pipe joint 1031 and the water outlet pipe joint 1041 can be seated in the pipe joint seating portions 513 on both sides and be rotatably disposed in the seating portion openings 514. Further, the water inlet pipe joint 1031 and the water outlet pipe joint 1041 can be rotatably connected to both sides of the head body 52. Accordingly, in a state in which the head body 52 and the pipe joints 1031, 1041 are mounted to the head connecting portions 512, the head body 52 and the pipe joints 1031, 1041 can be rotated with the head connecting portions 512 as a reference.

[0130] The head body 52 can be formed in a cylindrical shape in which the bottom surface of the opening is connected to the filter 60. Further, the water inlet pipe 103 and the water outlet pipe 104 can be connected to both sides of the head body 52.

[0131] In detail, the head body 52 can include a head upper portion 522 and a head lower portion 521. The water inlet pipe joint 1031 and the water outlet pipe joint 1041 can be connected to the head upper portion 522. A water inlet pipe connecting portion 5221 to which the water inlet pipe joint 1031 is connected and a water outlet pipe connecting portion 5222 to which the water outlet pipe joint 1041 is connected can be provided at both sides of the head upper portion 522.

[0132] The water inlet pipe connecting portion 5221 and the water outlet pipe connecting portion 5222 can be opened at both sides of the head upper portion. Further, the end portions of the water inlet pipe joint 1031 and the water outlet pipe joint 1041 can be rotatably inserted into the water inlet pipe connecting portion 5221 and the water outlet pipe connecting portion 5222.

[0133] In addition, the water inlet pipe connecting part 5221 and the water outlet pipe connecting part 5222 can be disposed on the same extension line to face each other. The water inlet pipe connecting part 5221 and the water outlet pipe connecting part 5222 can be protruded outward from the outer surface of the head upper part 522, and can be rotatably coupled to the head connecting part 512. In addition, the water inlet pipe connecting part 5221 and the water inlet pipe joint 1031, and the water outlet pipe connecting part 5222 and the water outlet pipe joint 1041 can be integrally formed, and the water inlet pipe 103 and the water outlet pipe 104 can be directly connected to the water inlet pipe connecting part 5221 and the water outlet pipe connecting part 5222.

[0134] The head lower part 521 can be disposed at the lower portion of the head upper part 522, and can form a coupling space 520 coupled to the upper end of the filter 60. The coupling space 520 can be open downward. In addition, the head lower part 521 can be formed to have a larger diameter than the head upper part 522. In addition, the head lower part 521 can be open-formed with a confirmation window 5211 capable of observing the accurate installation state of the filter 60. In addition, a rear confirmation window 5212 can be further formed at the rear of the head lower part 521 facing the confirmation window 5211. In order to distinguish from the rear confirmation window 5212, the confirmation window 5211 can be referred to as a front confirmation window 5211.

[0135] The bottom surface of the head lower part 521 can be open, and can form a coupling space 520 accommodating the upper end of the filter 60. In addition, the inner surface of the head lower part 521 can be formed with coupling guides 523, 524 to guide the insertion and coupling of the filter 60.

[0136] As an example, the coupling guides 523, 524 can include a first guide 523 and a second guide 524. The first guide 523 can be formed to guide the insertion and coupling of the first guide protrusion 625 formed at the filter 60, and the second guide 524 can be formed to guide the insertion and coupling of the second guide protrusion 626 formed at the filter 60.

[0137] In detail, the first guide 523 and the second guide 524 can be formed at positions facing each other. In addition, the first guide 523 and the second guide 524 can be disposed in the same direction as the disposition direction of the water inlet pipe connecting part 5221 and the water outlet pipe connecting part 5222.

[0138] The first guide 523 can be recessed in the inner surface of the lower head portion 521 and extend upward from the lower end of the lower head portion 521. The first guide 523 can extend to the confirmation window 5211 and guide the first guide protrusion 625 to move to the confirmation window 5211.

[0139] The first guide 523 can include a first guide hole 5231 opened at the lower end of the lower head portion 521. The first guide hole 5231 can be positioned below the water inlet pipe connection portion 5221. The first guide hole 5231 can be formed in a size corresponding 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.

[0140] In addition, the first guide 523 can include a first guide portion 5232 extending from one end of the first guide hole 5231 to the confirmation window 5211. The first guide portion 5232 can be formed in an inclined or curved shape and can be in contact with the first guide protrusion 625. Accordingly, the first guide protrusion 625 inserted into the first guide hole 5231 can be guided to move to the confirmation window 5211 while maintaining contact with the first guide portion 5232. In addition, the first guide portion 5232 can be formed in a pair at both ends of the first guide hole 5231, and the first guide protrusion 625 can be disposed between the pair of first guide portions 5232.

[0141] At this time, the first guide portion 5232 can be formed along the circumference of the inner surface of the lower head portion 521. In addition, the first guide protrusion 625 can move along the inner surface of the lower head portion 521. Accordingly, the filter cover 600 can be rotated during movement of the first guide protrusion 625 from the first guide hole 5231 to the confirmation window 5211.

[0142] The second guide 524 can be recessed in the inner surface of the lower head portion 521 and extend upward from the lower end of the lower head portion 521. The second guide 524 can extend to the rear confirmation window 5212 and guide the second guide protrusion 626 to move to the rear confirmation window 5212.

[0143] The second guide 524 can be formed at a position facing the first guide 523. In addition, the second guide 524 can be formed in a shape corresponding to the first guide 523, but can be formed to extend in a direction opposite to the extension direction of the first guide 523.

[0144] The second guide 524 can include a second guide hole 5241 opened at a lower end of the head lower portion 521. The second guide hole 5241 can be positioned below the water outlet connection portion 5222. Further, the second guide hole 5241 can be formed in a direction opposite to the first guide hole 5231. The second guide hole 5241 can be formed in a size corresponding to a size of the second guide protrusion 626, so that the second guide protrusion 626 is inserted through the second guide hole 5241.

[0145] Further, the second guide 524 can 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 can be formed in an inclined manner or with a curvature, and can be in contact with the second guide protrusion 626. Accordingly, 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. Further, the second guide portion 5242 can be formed in a pair at both ends of the second guide hole 5241, and the second guide protrusion 626 can be disposed between the pair of second guide portions 5242.

[0146] At this time, the first guide portion 5232 can be formed along a circumference of an inner surface of the head lower portion 521. Further, the second guide protrusion 626 can move along the inner surface of the head lower portion 521. Accordingly, the filter cover 600 can be rotated during movement of the second guide protrusion 626 from the second guide hole 5241 to the rear confirmation window 5212.

[0147] Further, a restriction portion 5213 can be formed to protrude downward at an upper end of the rear confirmation window 5212. The restriction portion 5213 can protrude downward and can be formed in a ring shape with elasticity. Accordingly, it is possible to confirm, through the rear confirmation window 5212, that the restriction portion 5213 is inserted into a restriction groove 6266 formed on a top surface of the second guide protrusion 626. Figure 19 Further, at a moment when the restriction portion 5213 is inserted into the restriction groove 6266, an operation feeling generated by elastic deformation of the restriction portion 5213 and coupling with the restriction groove 6266 can be transmitted to a user, so that the user can recognize that the filter 60 has completed complete installation.

[0148] On the other hand, the head body 52 can be provided with a head inner portion 53 inside thereof. The head inner portion 53 can be separately formed and coupled to the head body 52. The head inner portion 53 can be exposed through a bottom surface of an opening of the head body 52. Further, the head inner portion 53 can be formed in a circular shape concentric with the head body 52 when viewed from below.

[0149] The head inner portion 53 can be formed in conjunction with the water inlet portion 663 and the water outlet portion 664. Further, the head inner portion 53 can also provide a mounting structure of the water inlet ring 541 and the water outlet ring 542 for sealing of the water inlet portion 663 and the water outlet portion 664. Further, the head inner portion 53 can provide a structure for mounting the filter sensing device 55 for sensing the filter 60. Further, the head inner portion 53 can also be configured to be inserted by the rotation protrusion 669 for easier relative rotation of the cover body 600.

[0150] In detail, the head inner portion 53 can include an inner base 532 and an inner wheel 531. The inner base 532 can form a bottom surface of the head inner portion 53. Further, the inner base 532 can be formed in a circular shape. A center of the inner base 532 can be located on the same extension line as a center of the head body 52. The inner base 532 can be closer to an upper side than a lower end of the head body 52 in a state in which the head inner portion 53 is coupled to the head body 52.

[0151] The inner base 532 can be formed with a water inlet hole 5321 and a water outlet hole 5323. The water inlet hole 5321 and the water outlet hole 5323 can be arranged side by side with each other. Further, the water inlet hole 5321 and the water outlet hole 5323 can be located between the first guide hole 5231 and the second guide hole 5241. Accordingly, if the first guide protrusion 625 and the second guide protrusion 626 are mounted by being inserted into the first guide hole 5231 and the second guide hole 5241, the water inlet portion 663 and the water outlet portion 664 can be naturally inserted into the water inlet hole 5321 and the water outlet hole 5323, respectively.

[0152] The water inlet hole 5321 and the water outlet hole 5323 can be formed in an elliptical shape corresponding to a cross-sectional shape of the water inlet portion 663 and the water outlet portion 664, respectively. Further, the water inlet hole 5321 and the water outlet hole 5323 can be arranged to have directionality.

[0153] Accordingly, the water inlet portion 663 and the water outlet portion 664 can be mounted by being inserted into the corresponding water inlet hole 5321 and water outlet hole 5323, respectively, without being mis-mounted. Since mis-mounting when the filter 60 is mounted can be prevented, accurate operation of the valve 56 inside the head 50 can be ensured by insertion of the water inlet portion 663 when the filter 60 is mounted.

[0154] In addition, since the water inlet portion 663 and the water outlet portion 664 have an elliptical cross-sectional shape, when the filter 60 is viewed from above, the directionality can be easily confirmed, and the accurate alignment state can be easily recognized.

[0155] Furthermore, even if a torque is applied to the water inlet portion 663 and the water outlet portion 664 which are maintained in a fixed state with respect to the rotating cover body 600, the water inlet portion 663 and the water outlet portion 664 are not rotated or displaced, but can be maintained in a structurally stable fixed state.

[0156] As an example, the water inlet hole 5321 can be formed such that the long axis of the cross section is arranged in the front-rear direction, and the water outlet hole 5323 can be formed such that the long axis of the cross section is arranged in the left-right direction.

[0157] A water inlet frame 5325 extending upward can be formed around the water inlet hole 5321. The water inlet frame 5325 can form a space into which the water inlet portion 663 is inserted. In addition, the upper end of the water inlet frame 5325 can support the water inlet ring 541. The water inlet ring 541 can be seated in the water inlet frame 5325, thereby preventing deformation and falling.

[0158] An inclined surface 5322 can be formed between the water inlet hole 5321 and the water inlet frame 5325. The inclined surface 5322 guides the water inlet portion 663 to be inserted into the inside of the water inlet hole 5321, and enables the water inlet portion 663 to smoothly escape without being caught by the end of the water inlet hole 5321 when the filter 60 is detached.

[0159] On the other hand, a valve 56 can be provided above the water inlet hole 5321. The valve 56 can open and close a flow path communicating with the water inlet hole 5321. The valve 56 can have a structure like a check valve. The valve 56 can be opened in contact with the water inlet portion 663 when the filter 60 is installed such that the water inlet portion 663 is inserted into the water inlet hole 5321. In addition, in a state in which the filter 60 is not installed, the valve 56 can be maintained in a closed state, thereby preventing water leakage.

[0160] A water outlet frame 5326 extending upward can be formed around the water outlet hole 5323. The water outlet frame 5326 can form a space into which the water outlet portion 664 is inserted. In addition, the upper end of the water outlet frame 5326 can support the water outlet ring 542. The water outlet ring 542 can be seated in the water outlet frame 5326, thereby preventing deformation and falling.

[0161] Therefore, if the head inner portion 53 is installed to the head main body 52, the water inlet ring 541 and the water outlet ring 542 can be fixed in the up and down direction by the head main body 52, the water inlet frame 5325, and the water outlet frame 5326.

[0162] An inclined surface 5324 can be formed between the water outlet hole 5323 and the water outlet frame 5326. The inclined surface 5324 guides the water outlet portion 664 to be inserted into the inside of the water outlet hole 5323, and when the filter 60 is separated, the water outlet portion 664 can be smoothly separated without being caught by the end of the water outlet hole 5323. In particular, the filter 60 can be separated by bending during the rotation operation, and the separation movement of the filter 60 can be smoothly performed using the inclined surfaces 5322 and 5324.

[0163] On the other hand, a filter sensing device 55 for sensing the installation of the filter 60 can be provided in the inside of the head main body 52. In addition, an electric wire 550 connected to the filter sensing device 55 can extend upward of the head main body 52.

[0164] A sensing hole 5327 into which a sensing member 668 to be described later is inserted can be formed in the inner base 532. In addition, the filter sensing device 55 can be provided at the upper end of the sensing hole 5237. Therefore, if the filter 60 is installed to the head 50, the sensing member 668 can be inserted into the inside of the sensing hole 5237, and the filter sensing device 55 can sense the sensing member 668 to determine the installation of the filter 60. Figure 16

[0165] An inclined surface 5328 can be formed at the circumference of the sensing hole 5237 to smoothly enter and exit the sensing member 668.

[0166] A rotation groove 5329 into which the rotation protrusion 669 is inserted can be formed in the inner base 532. The rotation groove 5329 can extend upward and be formed in a shape corresponding to the rotation protrusion 669 so that the rotation protrusion 669 can be closely attached to the rotation groove 5329. Therefore, when the cover 600 is rotated, torque can be easily generated. In addition, the rotation protrusion 669 and the rotation groove 5329 can firmly combine the filter cover 66 and the head inner portion 53 with each other when the filter 60 is installed, and thus, the water inlet portion 663 and the water outlet portion 664 can be prevented from being displaced when the cover 600 is rotated. Figure 16 Figure 16

[0167] ​​​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.

[0168] The sensing hole 5237 and the rotating groove 5329 can be configured to face each other. Furthermore, the configuration of the sensing hole 5237 and the rotating groove 5329 can intersect with the configuration of the water inlet 5321 and the water outlet 5323. For example, the water inlet 5321 and the water outlet 5323 can be configured on the left and right sides relative to the center of the inner base 532, and the sensing hole 5237 and the rotating groove 5329 can be configured front-to-back.

[0169] 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.

[0170] 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.

[0171] 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 18 Insert 6256 in the middle.

[0172] 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.

[0173] The radius R1 to the first guide 5232 from the center C of the head 50 or the head interior 53 can be greater than the radius R2 to the second guide 5242. Thus, when the filter 60 is installed, a spaced interval G capable of inserting the protruding extension 6256 can be provided between the outer side end of the head interior 53 and the first guide 5232. In the case where the first guide protrusion 625 attempts to be inserted into the inner side of the second guide 524, the protruding extension 6256 is caught by the second guide 5242. Thus, the first guide protrusion 625 cannot be inserted into the second guide 524.

[0174] That is, the first guide 523 and the second guide 524 can be inserted into the first guide protrusion 625 and the second guide protrusion 626, respectively, only. In addition, the water inlet 663 and the water outlet 664 can be inserted into the water inlet hole 5321 and the water outlet hole 5323, respectively, having a corresponding cross-sectional shape.

[0175] In addition, 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 completed to be installed. In addition, the water inlet 663 and the water outlet 664 are inserted and pass through the water inlet ring 541 and the water outlet ring 542 disposed inside the water inlet hole 5321 and the water outlet hole 5323, thereby being capable of preventing water leakage between the head 50 and the filter 60.

[0176] A flow path communicating with the water inlet pipe 103 and the water outlet pipe 104 and the water inlet 663 and the water outlet 664 can be formed inside the head body 52. In addition, the valve 56 opening and closing the flow path communicating with the water inlet 663 can be installed inside the head body 52.

[0177] Hereinafter, the flow path structure inside the head body 52 will be described in detail with reference to the accompanying drawings.

[0178] Figure 9 is a 9-9 sectional view of Figure 4 , and Figure 10 is a 10-10 sectional perspective view of Figure 3 .

[0179] As shown in the drawings, a water inlet flow path 5220 communicating with the water inlet pipe connection portion 5221 can be formed inside the head body 52, and a water outlet flow path 5251 communicating with the water outlet pipe connection portion 5222 can be formed.

[0180] Further, a valve installation portion 5242 connected to the water inlet flow path 5220 and installed with a valve 56 can be formed inside the head body 52. The valve 56 is used to selectively supply water supplied from the water inlet flow path 5220 to the filter 60, and can be opened and closed according to installation of the filter 60. The water inlet portion 663 can be inserted into the valve 56, and the water inlet portion 663 and the water inlet flow path 5220 can communicate with each other when the valve 56 is opened.

[0181] Further, a water outlet port receiving portion 5252 connected to the water outlet flow path 5251 and into which the water outlet portion 664 is inserted can be formed inside the head body 52. Cross-sectional shapes of the valve installation portion 5242 and the water outlet port receiving portion 5252 can be formed in an elliptical shape corresponding to cross-sectional shapes of the water inlet portion 663 and the water outlet portion 664.

[0182] On the other hand, if the head interior 53 is coupled to the head body 52, a body extension portion 5215 of the head body 52 can be inserted between the water inlet port rim 5325 and the water outlet port rim 5326 and the inner wheel 531. The body extension portion 5215 can be formed in a cylindrical shape with an open bottom surface, and a pair can be formed on both left and right sides. Further, upper ends of the water inlet portion 663 and the water outlet portion 664 can be inserted inside the body extension portion 5215. Further, a water inlet port ring 541 and a water outlet port ring 542 can be respectively provided inside the body extension portion 5215.

[0183] The water inlet port ring 541 and the water outlet port ring 542 can be formed in a ring shape, and can be formed in an elliptical shape corresponding to the water inlet hole 5321 and the water outlet hole 5323. Further, the water inlet port ring 541 can be limited in an up-and-down direction by an upper end of the water inlet port rim 5325 and a lower end of the valve 56, and the water inlet port ring 541 can be limited from being displaced in an outward direction by an inner surface of the body extension portion 5215.

[0184] When the water inlet portion 663 and the water outlet portion 664 are inserted, the water inlet port ring 541 and the water outlet port ring 542 can maintain an installed position, prevent the water inlet portion 663 and the water outlet portion 664 from being displaced, and maintain an airtight state.

[0185] Further, at least a portion of the water inlet port ring 541 and the water outlet port ring 542 in an overall up-and-down height of the water inlet portion 663 and the water outlet portion 664 is formed in an elliptical shape corresponding to the water inlet port ring 541 and the water outlet port ring 542, thereby being able to ensure airtightness.

[0186] 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.

[0187] The valve 56 will now be described in detail with reference to the accompanying drawings.

[0188] 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.

[0189] 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.

[0190] 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 contact and support the inlet ring 541 from above.

[0191] Furthermore, the circumferential surface 5612 of the valve housing 561 can contact the valve mounting portion 5242. On the other hand, as... Figure 9 As 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.

[0192] The piston 563 can be provided in the piston housing 5610 and open / close the housing passage 5615 by moving up and down. Also, a valve cap 562 can be provided on the top surface 5611 of the valve housing 561. Also, a spring 564 can be provided between the valve cap 562 and the piston 563 to elastically support the piston 563.

[0193] The piston 563 can include a seat portion 5631 that shields the housing passage 5615, a contact portion 5633 that protrudes downward from the bottom surface of the seat portion 5631 and passes through the housing passage 5615, and a push rod 5632 that protrudes upward from the top surface of the seat portion 5631 and passes through the valve cap 562.

[0194] The seat portion 5631 can be formed in a circular shape and open / close the housing passage 5615. At this time, the housing passage 5615 can be formed in a circular shape corresponding to the seat portion 5631 and be opened / closed by the up / down movement of the piston 563. Also, the seat portion 5631 can be formed in a circular shape having a diameter corresponding to the length of the minor axis of the cross section of the elliptical valve housing 561.

[0195] Accordingly, a relatively wide flow passage space is provided between the portion of the cross section of the valve housing 561 corresponding to the position of the major axis and the outer surface of the seat portion 5631. Accordingly, when the housing passage 5615 is opened by the upward movement of the piston 563, a large amount of water can be supplied to the water inlet portion 663.

[0196] On the other hand, the contact portion 5633 can protrude downward through the housing passage 5615 and come into contact with the upper end of the water inlet portion 663 when the filter 60 is installed. As an example, the contact portion 5633 can be formed to cross at least a portion of the water inlet port contact portion 6632 of the water inlet portion 663. Accordingly, when the water inlet portion 663 is inserted and comes into contact with the contact portion 5633, the contact portion 5633 can be prevented from being inserted into the inside of the water inlet portion 663 and partially shielding the flow passage. As an example, the contact portion 5633 can be formed in a cross shape or a one-dimensional cross-sectional shape, thereby ensuring a space for water flow.

[0197] Also, a piston ring 565 can be provided on the upper end of the contact portion 5633, i.e., the bottom surface of the seat portion 5631. The piston ring 565 can come into contact with the circumference of the housing passage 5615 and make the housing passage 5615 airtight with the piston 563. The piston ring 565 can be formed in a circular ring shape corresponding to the housing passage 5615 and the seat portion 5631.

[0198] 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. Thus, when the piston 563 moves up and down, the piston 563 does not tilt or move eccentrically by the action of the push rod 5632.

[0199] In addition, the spring 564 can be configured to be penetrated 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. In addition, the seat 5631 can maintain a state of shielding the housing passage 5615 using the elastic force of the spring 564. In addition, the spring 564 can be compressed when the piston 563 moves upward.

[0200] The valve cap 562 can shield the top surface 5611 of the valve housing 561. The valve cap 562 can be formed in an oval shape corresponding to the cross section of the upper portion of the valve housing 561. In addition, a push rod hole 5621 through which the push rod 5632 passes can be formed in the center of the valve cap 562. In addition, a cap through hole 5623 that penetrates the valve cap 562 can be formed in the valve cap 562. The cap through hole 5623 can be formed on both sides of the passage through which the water flowing into the water inflow passage 5220 flows, with the push rod hole 5621 as a reference. Thus, by opening the housing passage 5615 by the movement of the piston 563, the water supplied to the water inflow passage 5220 can flow into the water inflow portion 663 through the valve 56 via the cap through hole 5623 and the housing passage 5615.

[0201] On the other hand, in order to supply water to the filter assembly 40, the water supply valve 102 is operated, and the water supply valve 102 can be determined to be opened or closed using the filter sensing device 55.

[0202] Hereinafter, the filter sensing device will be described in detail with reference to the accompanying drawings.

[0203] Figure 13 is an exploded perspective view of an exploded pattern of the head portion viewed from below. In addition, Figure 14 is a cross-sectional exploded perspective view of the head portion. In addition, Figure 15 is Figure 4 is a 15-15 cross-sectional perspective view of the head portion.

[0204] As shown in the drawings, the filter sensing device 55 can be provided in the head portion 50. The filter sensing device 55 can be provided inside the head portion main body 52, and can sense the filter 60 when the filter 60 is installed.

[0205] As an example, the filter sensing device 55 can be a Hall sensor that senses a change in a magnetic field. As another example, the filter sensing device 55 can be configured by a proximity sensing device, a radio frequency identification (RFID) reader, or the like. The filter sensing device 55 can be configured by other various devices of a non-contact type capable of sensing the installation of the filter 60.

[0206] In detail, the filter sensing device 55 can include a main body part 551 fixed to the head body 52 and a sensing part 552 extending downward from the main body part 551 to sense the sensing member 668.

[0207] The main body part 551 can be provided with a substrate and elements for the operation and signal processing of the filter sensing device 55. In addition, the width of the main body part 551 can be greater than the width of the sensing part 552, and further, the main body part 551 can be stably and firmly fixed in structure using the head inner portion 53 combined inside the head body 52.

[0208] The sensing part 552 can extend downward from the main body part 551, and the end of the sensing part 552 is positioned above the sensing hole 5327. At this time, the extension length of the sensing part 552 can be formed so that, in a state in which the filter sensing device 55 is installed, the lower end of the sensing part 552 is positioned at the same height as the upper end of the hole frame 53271 of the sensing hole 5327 or a position slightly higher than the upper end of the hole frame 53271 of the sensing hole 5327. Accordingly, when the sensing member 668 is inserted into the sensing hole 5327 as much as possible, the lower end of the sensing part 552 does not directly contact the sensing member 668 and can be spaced apart by a distance that can be sensed.

[0209] On the other hand, an alignment protrusion 553 can be formed at one side of the main body part 551. When the filter sensing device 55 is installed, the alignment protrusion 553 can be inserted into the protrusion groove 5263 formed in the sensing device installation part 526. By the combination of the alignment protrusion 553 and the protrusion groove 5263, the filter sensing device 55 can be disposed at an accurate position. Accordingly, the sensing part 552 can be disposed at an accurate position in the inner side region of the sensing hole 5327, thereby being able to secure reliable sensing with respect to the filter 60.

[0210] The electric wire 550 can be connected to the upper end of the main body part 551. The electric wire 550 can extend upward and can be directed upward through the top surface opening 5264 of the sensing device installation part 526. In addition, the electric wire 550 can be directed to the outside of the head 50 through the head upper portion 522.

[0211] On the other hand, the main body 551 and the sensing portion 552 can be sealed to prevent moisture penetration, or can be formed to be surrounded by a seal material formed of an additional housing or a waterproof material.

[0212] The head main body 52 can be formed with a sensing device mounting portion 526 for mounting the filter sensing device 55. The sensing device mounting portion 526 can be formed on the head upper portion 522, and can include a main body hole 5260 which is open downward. The filter sensing device 55 can be inserted from below to pass through the main body hole 5260. The main body hole 5260 can be formed through the top surface of the head lower portion 521. That is, the filter sensing device 55 can be inserted from the inside of the head main body 52 through the top surface of the head lower portion 521 and into the main body hole 5260. In addition, the sensing device mounting portion 526 can be open downward for the filter sensing device 55 to be inserted from below. In addition, the top surface opening 5264 can be formed on the top surface. Thus, the sensing device mounting portion 526 can be open to communicate with each other in the up-and-down direction, so that even if water leakage occurs to cause water penetration, water is not accumulated but discharged downward, thereby preventing damage to the filter sensing device 55.

[0213] The sensing device mounting portion 526 can include a pair of side support portions 5261 extending downward. The side support portions 5261 can be spaced apart from each other to form a mounting space 5262 for the filter sensing device 55 to be inserted. In addition, the side support portions 5261 can support both side surfaces of the filter sensing device 55. That is, the side support portions 5261 can support both side surfaces of the main body 551.

[0214] The other surface of the main body 551 can be supported by the circumferential surface of the head upper portion 522. At this time, in order to accommodate the filter sensing device 55, the outer surface of the head upper portion 522 corresponding to the sensing device mounting portion 526 can be convex outward. That is, in order to secure a space for accommodating the main body 551 having a width greater than the sensing portion 552, the head upper portion 522 can be convex outward in a corresponding shape.

[0215] In addition, the sensing device mounting portion 526 can further include an inner support portion 5265 connecting the pair of side support portions 5261. The inner support portion 5265 can be formed at a position opposite the convex portion of the head upper portion 522. In addition, the inner support portion 5265 can extend upward from the bottom surface of the head upper portion 522.

[0216] Therefore, through the protruding shapes of the side support 5261, the inner support 5265, and the upper part of the head 522, the circumferential surface of the filter sensing device 55 can be restricted as a whole, and the filter sensing device 55 can be stably fixed to the sensing device mounting part 526.

[0217] In particular, the filter sensing device 55 can be disposed on the upper part 522 of the head, which is spaced apart from the circumferential surface of the lower part 521 of the head directly attached to the filter 60. Therefore, even during repeated loading and unloading of the filter 60, direct contact between the filter 60 and the filter sensing device 55 or the transmission of impact to the filter sensing device 55 can be prevented, thereby preventing damage to the filter sensing device 55.

[0218] Furthermore, a raised groove 5263 may be formed on the sensing device mounting portion 526 at a position opposite to the alignment protrusion 553. The raised groove 5263 may be formed at the lower end of the opening of the sensing device mounting portion 526. Therefore, when the filter sensing device 55 is fully inserted and installed, the alignment protrusion 553 can be inserted into the raised groove 5263 to align the filter sensing device 55.

[0219] On the other hand, when the filter sensing device 55 is inserted into the sensing device mounting part 526, the filter sensing device 55 can be more firmly fixed by the head interior 53 that is combined with the head body 52.

[0220] The head interior 53 can be inserted from below through the bottom surface of the opening of the head body 52, and can be combined with the head body 52 in the vertical direction. The valve 56, the inlet ring 541, and the outlet ring 542 can be configured between the head body 52 and the head interior 53, and can be fixedly installed by combining with the head interior 53.

[0221] Specifically, the sensing hole 5327 can be formed in the inner base 532 inside the head 53, and an upwardly extending hole frame 53271 can be formed along the periphery of the sensing hole 5327. The hole frame 53271 can contact the outer surface of the sensing member 668 and guide the insertion of the sensing member 668. At this time, the height of the hole frame 53271 can be extended to a height adjacent to the lower end of the sensing part 552, and can have a height that does not directly contact the sensing part 552.

[0222] The inner base 532 may also have an inclined surface 5328 that connects the periphery of the sensing hole 5327 to the lower end of the hole frame 53271. Therefore, when the filter 60 is engaged, the upper end of the sensing member 668 can be easily inserted.

[0223] Further, the inner wheel 531 can be extended upward from the inner base 532. At this time, the height of the inner wheel 531 can be formed to support the filter sensing device 55 from below.

[0224] The inner wheel 531 can be positioned below the sensing device mounting portion 526. Further, if the head inner portion 53 is combined with the head main body 52, the upper end of the inner wheel 531 can be in contact with the bottom surface of the main body portion 551. The filter sensing device 55 can be maintained in a fixed state by being supported from below by the upper end of the inner wheel 531 while being closely adhered upward by the inner wheel 531.

[0225] In particular, the filter sensing device 55 does not need an additional fastening member for fixation, but is fixed to the head 50 only by being inserted and combined with the head main body 52. Accordingly, even in the case where the filter sensing device 55 needs to be replaced or repaired, the filter sensing device 55 can be easily detached only by simple separation of the head inner portion 53.

[0226] Hereinafter, the filter 60 will be described in detail with reference to the accompanying drawings.

[0227] Figure 16 is an exploded perspective view of a filter.

[0228] As shown in the drawings, the filter 60 can include a cover 600 forming an appearance, a filter cartridge 63 disposed inside the cover 600, and a filter cover 66 exposed through the top surface of the cover 600.

[0229] The cover 600 can include an upper cover 62 forming the upper portion of the cover 600 and a lower cover 61 forming the lower portion of the cover 600. The upper cover 62 and the lower cover 61 can be combined with each other to form a space in which the filter cartridge 63 is accommodated.

[0230] The upper cover 62 and the lower cover 61 can be formed in a cylindrical shape in a combined state and form the appearance of the filter 60. Further, the upper cover 62 and the lower cover 61 can be formed of a plastic material and can be combined with each other by ultrasonic welding or spin welding.

[0231] The upper cover 62 can be configured to have an open top surface and a bottom surface, and spaces 6200, 620 in which the filter cover 66 is rotatably disposed can be formed in the inside of the upper cover 62.

[0232] As an example, the upper cover 62 can include an upper portion 623 inserted into the inside of the head body 52 and a lower portion 622 exposed to the lower side of the head body 52. Further, a first guide protrusion 625 and a second guide protrusion 626 can be formed at the circumference of the upper portion 623 so that the filter 60 is detachably coupled to the head 50.

[0233] The upper cover 62 can further include a cover coupling portion 621 extending downwardly from the lower portion 622. The cover coupling portion 621 can be inserted into the inside of the lower cover 61 to be in contact with the inner surface of the lower cover 61. Further, a coupling groove 6221 for the upper end of the lower cover 61 to be inserted thereinto can be formed between the lower end of the lower portion 622 and the cover coupling portion 621. The coupling groove 6221 and the upper end of the lower cover 61 can be coupled to each other by welding.

[0234] The top surface of the lower cover 61 can be open to form an accommodation space 611 in which the filter cartridge 63 is accommodated. The filter cartridge 63 can be inserted through the open top surface of the lower cover 61 and accommodated in the inside of the accommodation space 611.

[0235] On the other hand, the cover 600 can be relatively rotated with the filter cover 66 as a reference. That is, the filter cover 66 can be maintained in an aligned state for coupling to the head 50, and the cover 600 can be fastened to the head 50 by rotation.

[0236] The filter cartridge 63 can be formed in a cylindrical shape having a hollow 631 passing through the center thereof. The filter cartridge 63 can be formed of a porous material and configured to purify water passing through the filter cartridge 63. As an example, water outside the filter cartridge 63 can flow into the hollow 631 through the filter cartridge 63, flow upwardly through the hollow 631, and supply purified water.

[0237] The filter cartridge 63 can be formed of various materials and types, and a suitable material can be selected and used in accordance with a required water purification performance. As an example, the filter cartridge 63 can be formed of various filter cartridges such as a membrane filter cartridge, a pre-activated carbon filter cartridge, a multi-stage sediment filter cartridge, etc.

[0238] A lower support 64 can be provided at the bottom surface of the filter cartridge 63. The lower support 64 can be a member for supporting the filter 60 from the lower side and can be in contact with the bottom surface of the lower cover 61.

[0239] The lower support 64 can include a support bottom surface 641, a lower rim 642, and a lower protrusion 643. The support bottom surface 641 can contact a bottom surface of the filter cartridge 63 and support the filter cartridge 63. In addition, the lower rim 642 can extend upward along a peripheral edge of the support bottom surface 641 and support a lower end peripheral edge of the filter cartridge 63. In addition, the lower protrusion 643 can protrude upward from the support bottom surface 641. In addition, the lower protrusion 643 can be inserted from below the hollow 631 and support an inner side surface of the filter cartridge 63.

[0240] The upper support 65 can be disposed at an upper end of the filter cartridge 63, fix an upper portion of the filter cartridge 63, and guide purified water to the filter cover 66 through the hollow 631. In addition, the upper support 65 can connect the filter cartridge 63 and the filter cover 66 to each other.

[0241] The upper support 65 can include a support top surface 651, an upper rim 652, a filter cartridge interface 653, and an upper protrusion 654. The support top surface 651 can contact a top surface of the filter cartridge 63 and support the filter cartridge 63. In addition, the upper rim 652 can extend downward along a peripheral edge of the support top surface 651 and support an upper end peripheral edge of the filter cartridge 63.

[0242] In addition, a filter cartridge interface 653 can protrude upward in a center of the support top surface 651. An outlet 6531 that communicates with the hollow 631 can be formed at an upper end of the filter cartridge interface 653. In addition, a sealing groove 6532 in which an interface seal 6533 is installed can be formed at a peripheral edge of the filter cartridge interface 653. The filter cartridge interface 653 can be configured to be inserted into an interface receiving portion 665 of the filter cover 66.

[0243] In addition, the upper protrusion 654 can protrude downward from the support top surface 651. In addition, the upper protrusion 654 can be inserted from above the hollow 631 and support an inner side surface of the filter cartridge 63. The upper protrusion 654 can communicate with the filter cartridge interface 653. That is, the filter cartridge interface 653, the upper protrusion 654, and the hollow 631 can be disposed on the same extension line, communicate with each other, and form a flow path through which water purified in the filter cartridge 63 passes.

[0244] The filter cover 66 can be located inside the upper cover body 62 and can divide an inside of the upper cover body 62 into upper and lower portions. In addition, the filter cover 66 can be rotatably installed to the upper cover body 62. At this time, a seal 67 can be provided between a peripheral edge of the filter cover 66 and the upper cover body 62. Thus, even in a state in which the filter cover 66 is rotatably installed to the upper cover body 62, water leakage can be prevented.

[0245] 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.

[0246] A rotating protrusion 669 protrudes upward from the top surface of the filter cover 66, for inserting into the rotating slot 5329. Furthermore, a sensing member 668 protrudes upward from the top surface of the filter cover 66. A magnet 67 can be installed inside the sensing member 668. The sensing member 668 has a structure that protrudes upward from the top surface 662 of the cover; therefore, it can also be referred to as a sensing protrusion.

[0247] The rotating protrusion 669 and the sensing member 668 can be arranged in a direction that intersects the arrangement direction of the water inlet 663 and the water outlet 664.

[0248] On the other hand, the sensing member 668 can be inserted into the sensing hole 5237, and the outer surface of the sensing member 668 can contact the inner surface of the sensing hole 5237. Furthermore, even without the rotating protrusion 669, the sensing member 668 can also be inserted into the sensing 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 sensing member 668, preventing displacement of the water inlet 663 and the water outlet 664.

[0249] The upper structure of the filter 60 will now be described in detail with reference to the accompanying drawings.

[0250] Figure 17 This is a top view of the filter. Furthermore, Figure 18 This is a side view of the upper part of the filter, taken from one side. Furthermore, Figure 19 This is a side view of the upper part of the filter, viewed from the other side. Furthermore, Figure 20 yes Figure 16 20-20 sectional perspective view.

[0251] 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.

[0252] The cover ribs 6241 can be adjacent to the lower end of the head body 52 when the filter 60 is installed. Thus, the interval between the cover ribs 6241 and the head body 52 can be visually confirmed, and the filter 60 can be completely fastened.

[0253] Further, the cover ribs 6241 can also function as a jig for the rotational fusion of the upper cover 62 and the lower cover 61. The cover ribs 6241 can be formed in plural along the connection surface 624. Further, the cover ribs 6241 can be symmetrically disposed with respect to the center of the upper cover 62.

[0254] The first guide protrusion 625 and the second guide protrusion 626 can be protrusively formed on the outer surface of the upper portion 623. The first guide protrusion 625 and the second guide protrusion 626 can be formed at positions facing each other with respect to the center of the cover 600. Further, the first guide protrusion 625 can be formed in a shape insertable into the first guide 523, and the second guide protrusion 626 can be formed in a shape insertable into the second guide 524. Further, the first guide protrusion 625 and the second guide protrusion 626 can be formed in different shapes from each other, and can prevent erroneous installation of the filter 60 and guide accurate installation.

[0255] Especially, the first guide protrusion 625 and the second guide protrusion 626 can be in contact with the first guide 523 and the second guide 524 before the water inlet portion 663 and the water outlet portion 664 are inserted into the head interior 53. Thus, the first guide protrusion 625 can prevent the water inlet portion 663 and the water outlet portion 664 from being in contact with the head interior due to erroneous installation of the first guide 523, and thus can fundamentally prevent deformation and damage of the water inlet portion 663 and the water outlet portion 664 due to erroneous installation.

[0256] As an example, the first guide protrusion 625 can be formed on the left with respect to the center of the filter 60. Further, the first guide protrusion 625 can be located on the side of the water inlet portion 663.

[0257] The first guide protrusion 625 can include a first upper portion 6251 and a first lower portion 6252 forming top and bottom surfaces, a first front inclined portion 6253 connecting a front end of the first upper portion 6251 and the first lower portion 6252, and a first rear inclined portion 6254 connecting a rear end of the first upper portion 6251 and the first lower portion 6252. The first upper portion 6251, the first lower portion 6252, the first front inclined portion 6253, and the first rear inclined portion 6254 can protrude from an outer surface of the upper cover 62 by the same thickness. In particular, the first front inclined portion 6253 can protrude to move in contact with the first guide portion 5232, allowing the filter 60 to easily rotate and move upward.

[0258] The first upper portion 6251 and the first lower portion 6252 can be formed in a size corresponding to a size of the first guide hole 5231, and the first guide protrusion 625 can be inserted into the first guide hole 5231 by upward movement of the filter 60. In addition, the first upper portion 6251 and the first lower portion 6252 can extend in parallel with an upper end of the upper cover 62. In addition, a configuration height of the first guide protrusion 625 can be located at an upper portion of the upper portion 623. In addition, a connecting rib 6255 vertically connecting between the first upper portion 6251 and the first lower portion 6252 can also be formed.

[0259] The first front inclined portion 6253 and the first rear inclined portion 6254 can be formed in a shape corresponding to an inclination of the first guide portion 5232. Accordingly, the first front inclined portion 6253 or the first rear inclined portion 6254 can move along with the first guide portion 5232.

[0260] On the other hand, a protrusion extension 6256 extending rearward can be formed at a rear end of the first upper portion 6251. The protrusion extension 6256 can protrude rearward from the same extension line as the first upper portion 6251, and can protrude along an outer surface of the upper portion 623. In addition, a protrusion thickness of the protrusion extension 6256 can be smaller than a protrusion thickness of the first upper portion 6251. In addition, the protrusion thickness of the protrusion extension 6256 can be smaller than a gap G between the head inner portion 53 and the first guide portion 5232. Accordingly, when the first guide protrusion 625 is inserted into the first guide hole 5231, the protrusion extension 6256 is inserted between the first guide portion 5232 and an outer surface of the head inner portion 53, allowing the first guide protrusion 625 to be inserted and to move in rotation.

[0261] The second guide protrusion 626 can include a second upper portion 6261 and a second lower portion 6262 forming top and bottom surfaces, a second front inclined portion 6263 connecting front ends of the second upper portion 6261 and the second lower portion 6262, and a second rear inclined portion 6264 connecting 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 front inclined portion 6263, and the second rear inclined portion 6264 can protrude from the outer surface of the upper portion 623 by the same thickness. In particular, the second front inclined portion 6263 can protrude to be moved in a state of being in contact with the second guide portion 5242. Also, the protrusion thickness of the second guide protrusion 626 can be the same as the protrusion thickness of the first guide protrusion 625.

[0262] The second upper portion 6261 and the second lower portion 6262 can be formed in a size corresponding to the size of the second guide hole 5241, and by the filter 60 being moved upward, the second guide protrusion 626 can be inserted into the second guide hole 5241. Also, the second upper portion 6261 and the second lower portion 6262 can extend in parallel with the upper end of the upper cover body 62. Also, the arrangement height of the second guide protrusion 626 can be the same as the arrangement height of the first guide protrusion 625. Also, a connecting rib 6265 vertically connecting between the second upper portion 6261 and the second lower portion 6262 can be further formed.

[0263] The second front inclined portion 6263 and the second rear inclined portion 6264 can be formed in a shape corresponding to the inclination of the second guide portion 5242. Accordingly, the second front inclined portion 6263 or the second rear inclined portion 6264 can be moved while being in contact with the second guide portion 5242, making the filter 60 easily rotate and move upward.

[0264] Also, a restriction groove 6266 recessed downward can be formed in the second upper portion 6261. When the second guide protrusion 626 is moved to the rear confirmation window 5212, the restriction portion 5213 is inserted into the restriction groove 6266 to restrict the filter 60.

[0265] On the other hand, a protrusion portion can be formed in the inside of the upper cover body 62. The protrusion portion can include a first protrusion portion 627. Also, the protrusion portion can further include a second protrusion portion 628. The first protrusion portion 627 can divide the inside of the upper cover body 62 into an upper space 620 in which a top surface of the filter cover 66 is exposed and a lower space 6200 in which a lower end of the filter cover 66 is rotatably accommodated.

[0266] The first protrusion 627 can be formed in the upper portion 623. The first protrusion 627 can protrude toward the center of the upper cover 62, and can be formed with an upper opening 6270 through which the filter cover 66 passes. The first protrusion 627 can support the periphery of the filter cover 66, and can support the filter cover 66 so that it does not separate upward even if the pressure inside the filter 60 increases.

[0267] In addition, a second protrusion 628 can be formed below the first protrusion 627. The second protrusion 628 can be formed at the upper end of the lower portion 622. In addition, the second protrusion 628 can continuously form a step at the lower end of the first protrusion 627. The second protrusion 628 can protrude toward the center of the upper cover 62 from the inner surface of the upper cover 62, and can protrude lower than the first protrusion 627. Accordingly, the inner surface of the upper cover 62, the second protrusion 628, and the first protrusion 627 can form steps in order. With the stepped shape of the first protrusion 627 and the second protrusion 628, the seal 67 can be disposed, and the filter cover 66 can be rotatably disposed inside the upper cover 62.

[0268] On the other hand, a limit protrusion 629 can be formed at the bottom surface of the second protrusion 628. The limit protrusion 629 can protrude downward from a position corresponding to a limit groove 6614 formed in the filter cover 66. In addition, if the filter cover 66 is mounted at the inner side of the upper cover 62, the limit protrusion 629 can be inserted into the limit groove 6614. In addition, the limit protrusion 629 can move along the limit groove 6614 when the upper cover 62 rotates. In addition, the limit protrusion 629 can contact one end of the limit groove 6614 in an aligned state of the cover 600 before the filter 60 is mounted to the head 50. In addition, the limit protrusion 629 can contact the other end of the limit groove 6614 in a state in which the cover 600 ends rotation so that the filter 60 is combined with the head 50.

[0269] A support protrusion 6211 can be formed below the second protrusion 628. The support protrusion 6211 can be configured to support the filter cover 66 from below when the filter cover 66 is mounted inside the upper cover 62.

[0270] 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 position of the lower end of the filter cover 66. The support protrusion 6211 can be formed in plural at the same height. As an example, the support protrusion 6211 can be formed in a pair at positions facing each other. In addition, the pair of support protrusions 6211 can be differently formed in size, thereby preventing erroneous assembly when combined with the filter cover.

[0271] On the other hand, in a state where the filter cover 66 is installed in the upper cover 62, the water inlet portion 663 and the water outlet portion 664 are directionally aligned within the upper cover 62. In addition, a user can easily confirm the alignment state of the water inlet portion 663 and the water outlet portion 664 with the naked eye.

[0272] In detail, as shown in FIG. 6, the identification portion 6275 can be formed on the top surface 6271 of the first protruding portion 627 of the filter 60. The identification portion 6275 can be formed in up, down, left, and right directions, respectively, crossing each other. The identification portion 6275 can protrude or be recessed from the top surface 6271 of the first protruding portion 627, and can extend toward the center of the upper cover 62. Figure 17

[0273] The identification portion 6275 can protrude from the top surface of the first protruding portion 627, and can extend toward the water inlet portion 663 and the water outlet portion 664. Accordingly, the identification portion 6275 can visualize the alignment state of the water inlet portion 663 and the water outlet portion 664. In addition, the identification portion can protrude from the first protruding portion 627 to enhance the strength of the first protruding portion 627, and can prevent the head inner portion 53 from being separated due to water pressure by supporting the head inner portion 53 from below.

[0274] As an example, the water inlet portion 663 and the water outlet portion 664 formed in the filter cover 66 can be disposed on an extension line of the identification portion 6275 disposed along both left and right sides. In addition, the rotation protrusion 669 and the sensing member 668 formed in the filter cover 66 can be disposed on an extension line of the identification portion 6275 disposed along both front and rear sides. That is, when the top surface of the filter 60 is viewed from above, the identification portion 6275 can be aligned on the same extension line as the water inlet portion 663 and the water outlet portion 664 and the rotation protrusion 669 and the sensing member 668. Accordingly, a user can confirm the alignment state of the filter cover 66 with the naked eye.

[0275] ​Further, the cover 600 can be rotated by 90° when the filter 60 is installed. Since the identification portions 6275 are provided at 90° angles, as the cover 600 is rotated, the alignment state of the water inlet portion 663 and the water outlet portion 664 and the rotating protrusion 669 and the sensing member 668 can be visualized.

[0276] On the other hand, in a state in which the filter 60 is installed in the head 50, the water inlet portion 663 and the water outlet portion 664 can be provided 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 and the water inlet portion 663 and the water outlet portion 664 can be provided on the same extension line in the left-right direction. In particular, the identification portions 6275 on the left and right, the first guide protrusion 625 and the second guide protrusion 626, and the water inlet portion 663 and the water outlet portion 664 can all be located on the same extension line, and a user can easily confirm the alignment state of the filter cover 66.

[0277] In the above state, during installation of the filter 60 in the head 50, the cover 600 is rotated, and the filter cover 66 remains stationary. Further, the first guide protrusion 625 and the second guide protrusion 626 can be rotated by 90° in the clockwise direction. At this time, the rotating protrusion 669 and the sensing 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 identification portions 6275 in front and behind, and the rotating protrusion 669 and the sensing member 668 can all be provided on the same extension line in the front-rear direction.

[0278] On the other hand, the water inlet portion 663 and the water outlet portion 664 can each be formed in an elliptical shape when viewed from above. Further, the water inlet portion 663 and the water outlet portion 664 can each be provided in different directions from each other when viewed from above. Accordingly, when the filter 60 is installed in the head 50, the water inlet portion 663 and the water outlet portion 664 can be directionally combined with the water inlet hole 5321 and the water outlet hole 5323. That is, by the directionality of the cross-sectional shape of the water inlet portion 663 and the water outlet portion 664, erroneous installation of the filter 60 can be prevented, and accurate installation thereof can be ensured.

[0279] As an example, the water inlet portion 663 and the water outlet portion 664 can be configured to have an elliptical cross section with the long axis thereof crossing each other. That is, the water inlet portion 663 can be configured to have the long axis L1 thereof in the front-rear direction and the short axis S1 thereof in the left-right direction. In addition, the water outlet portion 664 can be configured to have the long axis L2 thereof in the left-right direction and the short axis S2 thereof in the front-rear direction. That is, the long axis of the cross section of the water inlet portion 663 and the extension line of the long axis L2 of the cross section of the water outlet portion 664 can cross each other perpendicularly.

[0280] The water inlet portion 663 and the water outlet portion 664 are configured to have an elliptical cross section with the long axes L1, L2 thereof extending in directions crossing each other, and thus the torque generated when the cover 600 rotates does not rotate the filter cover 66.

[0281] The water inlet portion 663 and the water outlet portion 664 have an elliptical cross section that is not a perfect circle, but an elliptical shape having a long axis and a short axis and having a continuous arc shape. At this time, the elliptical shape of the cross section of the water inlet portion 663 and the water outlet portion 664 can be defined as a structure in which a part of the interval is disconnected or recessed or has a protruding portion or has a straight line interval that is not an arc shape in the entire circumference. That is, the water inlet portion 663 and the water outlet portion 664 can have various cross-sectional shapes having a long axis and a short axis crossing each other and can have a directionality.

[0282] On the other hand, the rotation protrusion 669 and the rotation groove 5329 can be coupled to each other to generate a torque for rotating the cover 600 in a state in which the filter cover 66 is fixed. Thus, the rotation protrusion 669 and the rotation groove 5329 can minimize the flow of the water inlet portion 663 and the water outlet portion 664 when the cover 600 rotates. In addition, by the coupling of the sensing member 668 and the sensing groove 5327, the filter cover 66 can be maintained in a state in which it is more firmly fixed to the inside 53 of the head, and the stable coupling of the water inlet portion 663 and the water outlet portion 664 can be ensured.

[0283] Hereinafter, the filter cover 66 will be described in detail with reference to the accompanying drawings.

[0284] Figure 21 is a perspective view of the filter cover of the filter viewed from above. In addition, Figure 22 is a side view of the filter cover. In addition, Figure 23 is Figure 21 is a cross-sectional perspective view of 23-23 of Figure 24 is Figure 21 is a cross-sectional perspective view of 24-24 of Figure 25 is Figure 4 is a cross-sectional perspective view of 25-25 of

[0285] As shown, the bottom surface of the filter cover 66 is opened, and the filter cover 66 can be formed in a circular shape when viewed from above. An inner rim 661 can be formed at the lower end of the filter cover 66. The inner rim 661 can be in contact with the inner surface of the upper cover body 62.

[0286] Further, the inner rim 661 can be formed with a rim groove 6611 and a rim hook 6612. The rim groove 6611 can extend from the lower end to the upper end of the inner rim 661. Further, the rim groove 6611 can be formed at a position corresponding to the support protrusion 6211, and can be formed so that the support protrusion 6211 passes therethrough.

[0287] The rim hook 6612 can be formed at the lower end of the rim groove 6611. The rim hook 6612 can be formed obliquely so that the support protrusion 6211 easily passes therethrough. The rim groove 6611 can be formed at both sides facing each other, and can be formed in different sizes so that support protrusions 6211 of corresponding sizes can be inserted. Thus, the filter cover 66 can be prevented from being assembled incorrectly, and can be assembled in the correct direction within the cover body 600.

[0288] Further, the support protrusion 6211 can support the lower end of the filter cover 66 after passing through the rim groove 6611 and the rim hook 6612. Further, the filter cover 66 can be maintained in a state of being fixedly installed at the upper cover body 62. Further, the support protrusion 6211 can move along the lower end of the inner rim 661 when the cover body 600 is rotated.

[0289] Further, a stepped portion 666 can be protruded upward at the upper end of the inner rim 661, and the stepped portion 666 can have a diameter smaller than that of the inner rim 661. A restriction groove 6614 into which the restriction protrusion 629 is inserted can be formed between the inner rim 661 and the stepped portion 666.

[0290] The restriction groove 6614 can extend along the upper end of the inner rim 661. The restriction groove 6614 can be opened upward. Thus, if the filter cover 66 is inserted upward from the lower end of the upper cover body 62, the restriction protrusion 629 can be inserted into the inner side of the restriction groove 6614. Further, one end of the restriction groove 6614 can be in contact with the restriction protrusion 629 in a state in which the cover body 600 is not rotated before the filter 60 is installed. Further, the other end of the restriction groove 6614 can be in contact with the restriction protrusion 629 in a state in which the cover body 600 is completely rotated when the filter 60 is installed.

[0291] That is, as the cover 600 rotates, the restriction protrusion 629 contacts both ends of the restriction groove 6614, allowing the cover 600 to rotate by a set angle. As an example, the set angle can be approximately 90°. To this end, the restriction groove 6614 can have a set length to allow the cover 600 to rotate by 90°. Further, the restriction groove 6614 can be formed on one side of the filter cover 66 corresponding to the restriction protrusion 629, rather than the inner rim 661.

[0292] On the other hand, a contact protrusion 6613 can be formed on the top surface of the inner rim 661. The contact protrusion 6613 can be formed in plural along the inner rim 661. As an example, the contact protrusion 6613 can be provided in three or four at a predetermined distance apart. Further, the contact protrusion 6613 can contact the inner surface of the upper cover 62. Accordingly, the outer surface of the filter cover 66 and the inner surface of the upper cover 62 are not entirely in contact with each other, but are partially in contact with each other. Thus, the upper cover 62 can rotate in a state in which friction with the filter cover 66 in a stationary state is minimized, enabling smooth rotation operation.

[0293] Further, the support protrusion 6211 can be easily engaged and restricted by the rim hook 6612 due to the effect of the gap between the upper cover 62 and the filter cover 66 formed by the contact protrusion 6613.

[0294] The stepped portion 666 can be composed of multiple segments, and can have a shape corresponding to the convex and concave shapes of the inner surface of the upper cover 62. As an example, the stepped portion 666 can include a second stepped portion 6662 on the upper end of the inner rim 661 and a first stepped portion 6661 on the upper end of the second stepped portion 6662. Further, the sealing member 67 can be disposed between the first and second stepped portions 6661 and 6662. Further, the first stepped portion 6661 can shield the upper opening 6270 of the first protrusion portion 627.

[0295] A cover top surface 662 can be formed above the first stepped portion 6661 to be exposed to the upper opening 6270. The cover top surface 662 can be formed in a circular shape corresponding to the upper opening 6270. Further, the cover top surface 662 can form the same plane as the top surface of the first protrusion portion 627. As another example, the cover top surface 662 can also be formed in a curved or inclined shape in which the central portion is higher and the edge is lower.

[0296] Further, a water inlet portion 663 and a water outlet portion 664 can be formed on the cap top surface 662. The water inlet portion 663 and the water outlet portion 664 can be spaced apart in positions facing each other, and can be formed at the same height h1. Since the water inlet portion 663 and the water outlet portion 664 are convex, they can be referred to as a water inlet joint and a water outlet joint. The rotating protrusion 669 and the sensing member 668 can be convex upward from the cap top surface 662. The rotating protrusion 669 and the sensing member 668 can be disposed in a direction crossing the disposition direction of the water inlet portion 663 and the water outlet portion 664.

[0297] The rotating protrusion 669 can fix the filter cover 66 so that the filter cover 66 can be maintained in a state fixed to the head inner portion 53 when the filter 60 is combined to the head 50, and only the cover body 600 is rotated. Further, it is possible to prevent displacement of the water inlet portion 663 and the water outlet portion 664 due to torque generated when the cover body 600 is rotated.

[0298] The sensing member 668 can be sensed by the filter sensing device 55 when the filter 60 is combined to the head 50. In the case where the filter sensing device 55 senses the sensing member 668, it can be judged that the filter 60 is accurately installed, and the water supply valve 102 is opened. That is, in the case where the filter 60 is not installed or is installed in error, the water supply valve 102 is maintained in a closed state, thereby preventing water leakage.

[0299] The sensing member 668 can extend upward from the cap top surface 662. The protruding height h3 of the sensing member 668 can be lower than the water inlet portion and the water outlet portion 664. Further, in the state where the combination of the filter 60 is completed, the upper end of the sensing member 668 can extend to a position adjacent to the lower end of the sensing portion 552. At this time, the upper end of the sensing member 668 can be positioned lower than the hole frame 53271, and not in contact with the sensing portion 552.

[0300] Further, when the filter is inserted into the head 50, the water inlet portion 663 and the water outlet portion 664 are first inserted into the water inlet hole 5321 and the water outlet hole 5323, and then the sensing member 668 can be inserted into the sensing hole 5327. Further, in a state in which the water inlet portion 663 and the water outlet portion 664 are completely inserted, the upper end of the sensing member 668 can be positioned at a height at which the sensing portion 552 can sense. If the sensing member 668 is sensed by the sensing portion 552, the water supply valve 102 can be opened. Further, when the filter 60 is separated, the upper end of the sensing member 668 is distanced from the sensing portion 552, thereby causing the water supply valve 102 to be closed. Accordingly, it is possible to fundamentally block water leakage caused by the opening of the water supply valve 102 during the attachment and detachment of the filter 60.

[0301] On the other hand, a protrusion opening 6682 can be formed on the top surface of the sensing member 668, and a recessed accommodation portion 6680 can be formed downward. Further, the accommodation portion 6680 can be inserted with a magnet 6681. The magnet 6681 can be formed in correspondence with the size of the accommodation portion 6680, can be pressed in through the protrusion opening 6682, and can shield the protrusion opening 6682. Accordingly, the top surface of the sensing member 668 can be formed by the magnet 6681. The height of the upper end of the sensing member 668 can correspond to the height of the top surface of the magnet 6681, and the top surface of the magnet 6681 can be formed in a planar shape.

[0302] Further, if the filter 60 is combined with the head 50, the magnet 6681 is adjacent to the sensing portion 552. As an example, the filter sensing device 55 can be constituted by a Hall sensor that senses a change in a magnetic field using the magnet 6681. Accordingly, if the filter 60 is inserted such that the magnet is close to the sensing portion 552, the filter sensing device 55 can determine the installation of the filter 60. At this time, even without direct contact with the sensing member 668, it is possible to determine whether the filter 60 is installed.

[0303] Further, an accommodation portion groove 66801 can be further formed on the bottom surface of the accommodation portion 6680. The accommodation portion groove 66801 can be formed by recessing a portion of the bottom surface of the accommodation portion 6680. Accordingly, when the filter cover 66 is injection molded, it is possible to prevent the accommodation portion 6680 from being partially deformed, and to mold the accommodation portion 6680 in an accurate size. Further, the periphery of the accommodation portion groove 66801 can support the magnet 6681 from below.

[0304] As another example, the magnet 6681 can also be provided in a state of being adhered to the upper end of the sensing member 668. Also, the magnet 6681 can also be inserted and mounted from the lower side of the water inlet portion 663, instead of being inserted and mounted from the top surface of the sensing member 668.

[0305] The height h2 of the rotation protrusion 669 and the height h3 of the sensing member 668 can be lower than the height h1 of the water inlet portion 663 and the water outlet portion 664. Thus, when the filter 60 is mounted to the head 50, the water inlet portion 663 and the water outlet portion 664 can be first inserted into the water inlet hole 5321 and the water outlet hole 5323, and the rotation protrusion 669 and the sensing member 668 can be inserted into the rotation groove 5329 and the sensing hole 5237 in a state in which the water inlet portion 663 and the water outlet portion 664 are first inserted. That is, since the height h1 of the water inlet portion 663 and the water outlet portion 664 is formed to be higher, when the water inlet portion 663 and the water outlet portion 664 are inserted and mounted, they can be combined to the inside of the head 53 without interfering with other components 668, 669.

[0306] A water inlet inclined portion 66301 and a water outlet inclined portion 66401 can be formed at the upper end of the water inlet portion 663 and the upper end of the water outlet portion 664, respectively. The water inlet inclined portion 66301 and the water outlet inclined portion 66401 can be formed to be smaller in diameter as they get closer to the upper side. Thus, the water inlet portion 663 and the water outlet portion 664 can more easily start to be inserted into the water inlet hole 5321 and the water outlet hole 5323. Also, during the insertion of the water inlet portion 663 and the water outlet portion 664 into the water inlet hole 5321 and the water outlet hole 5323, the water inlet ring 541 and the water outlet ring 542 can be prevented from being damaged.

[0307] 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 come into contact with each other. Therefore, even if the inlet portion 663 and the outlet portion 664 are not accurately aligned with the inlet hole 5231 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.

[0308] The filter cover 66 may include an interface receiving portion 665. The interface receiving portion 665 may extend downward from the top surface 662 of the cover. 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 cartridge interface 653 to be inserted.

[0309] 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 contact 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.

[0310] 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.

[0311] Further, an inlet port contact portion 6632 that separates the water inlet flow path 6631 inside the water inlet portion 663 can be formed inside the water inlet portion 663. The inlet port contact portion 6632 can extend from the upper end of the water inlet portion 663 to the water inlet outlet 6633. Further, the inlet port contact portion 6632 can be formed along the short axis S1 of the elliptical cross section of the water inlet portion 663.

[0312] Therefore, water flowing through the flow path space S on both sides of the seat portion 5631 can more effectively flow to the first space 6610 through the water inlet portion 663. Further, the upper end of the inlet port contact portion 6632 can be in contact with the contact portion 5633 of the valve 56.

[0313] In detail, the water inlet portion 663 can be formed in an elliptical shape, and the long axis L1 can extend in the front-rear direction. When the position where the water inlet outlet 6633 of the water inlet portion 663 is formed is disposed adjacent to the step portions 6661, 6662 in the lateral direction, and the long axis L1 is disposed in the front-rear direction, the size of the water inlet outlet 6633 can be ensured to smoothly flow water through the water inlet portion 663.

[0314] In addition, by disposing the long axis L1 direction of the water inlet portion 663 to correspond to the cross-sectional shape of the flow path formed in the valve 56, water supplied through the valve 56 can smoothly flow along the water inlet portion 663.

[0315] Further, in the case where the inlet port contact portion 6632 is disposed in the long axis L1 direction of the water inlet portion 663, a portion on the water inlet outlet 6633 side is blocked, and water cannot uniformly flow due to the water inlet flow path 6631 separated by the inlet port contact portion. Therefore, the inlet port contact portion 6632 is disposed in the short axis S1 direction of the water inlet portion 663, the water inlet outlet 6633 side is entirely open, and water can uniformly flow through the water inlet flow path 6631.

[0316] As another example, the inlet port contact portion 6632 can be formed at the upper end of the water inlet portion 663, but a portion thereof can be formed inside the water inlet portion 663. The inlet port contact portion 6632 can also be formed only at the upper end of the water inlet portion 663 or the upper portion of the water inlet portion 663 that can be in contact with the contact portion 5633.

[0317] As still another example, the inlet port contact portion 6632 can be formed in a cross shape by a plurality of ribs intersecting when viewed from above, thereby being able to more stably support the contact portion 5633.

[0318] The water outlet portion 664 can communicate with the second space 6651. A lower end of the water outlet portion 664 can form a water outlet inlet 6643 that communicates with the second space 6651. In addition, a water outlet flow path 6641 can be formed inside the water outlet portion 664. A cross-sectional shape of the water outlet flow path 6641 can be formed in an elliptical shape, and can be disposed in a direction in which the cross-sectional shape of the water inlet flow path 6631 intersects each other.

[0319] In addition, inclined portions 6634, 6644 can be formed at lower ends of the water inlet portion 663 and the water outlet portion 664, respectively, and the inclined portions 6634, 6644 can be formed to be inclined from the cover top surface 662 or to be arc-shaped. The inclined portions 6634, 6644 can also be formed in shapes corresponding to the inclined portions 5322, 5324. The inclined portions 6634, 6644 can enhance the strength of the water inlet portion 663 and the water outlet portion 664 to prevent deformation and breakage of the water inlet portion 663 and the water outlet portion 664. In addition, in a state in which the water inlet portion 663 and the water outlet portion 664 are inserted into the water inlet hole 5321 and the water outlet hole 5323, the inclined portions 6634, 6644 can be adjacent to the inclined portions 5322, 5324, respectively.

[0320] Hereinafter, the combined structure of the upper cover body 62 and the filter cover 66 will be described in detail with reference to the accompanying drawings.

[0321] Figure 26 is a longitudinal sectional view of a state in which the upper cover body is combined with the filter cover. In addition, Figure 27 is Figure 26 is an enlarged view of A portion of Figure 28 is Figure 4 is a 28-28 sectional perspective view of

[0322] As shown in the drawings, the filter cover 66 can be inserted from below an opening of the upper cover body 62, and can be installed to shield the upper opening 6270. In a state in which the filter cover 66 is installed to the upper cover body 62, the water inlet portion 663 and the water outlet portion 664 can be exposed to a top surface of the opening of the upper cover body 62. In addition, the water inlet portion 663 and the water outlet portion 664 exposed when the filter 60 is installed can be inserted into the water inlet hole 5321 and the water outlet hole 5323.

[0323] The filter cover 66 can be supported by the support protrusion 6211 from below in a state in which the filter cover 66 is inserted into the upper cover body 62. Accordingly, the filter cover 66 does not separate from the upper cover body 62 and remains in an installed state.

[0324] The outer surface of the filter cover 66 forming the step and the inner surface of the upper cover 62 can be correspondingly configured to each other. Also, the filter cover 66 and the upper cover 62 can be airtight while rotating with each other by the seal 67.

[0325] In detail, the first protruding portion 627 can protrude toward the inside of the upper cover 62, and the second protruding portion 628 can protrude from the lower end of the first protruding portion 627 toward the center of the upper cover 62. The first protruding portion 627 can protrude more toward the center of the upper cover 62 than the second protruding portion 628. Also, the first protruding portion 627 and the second protruding portion 628 can form a step with each other. Also, the seal 67 can be configured at the stepped portion of the first protruding portion 627 and the second protruding portion 628.

[0326] As an example, the first protruding portion 627 can include a first inner surface 6271 forming the top surface of the first protruding portion 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 in parallel with the second inner surface 6272 and forming the bottom surface of the first protruding portion 627.

[0327] Also, the second protruding portion 628 can include a fifth inner surface 6281 forming the inner surface of the second protruding portion 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 and forming the bottom surface of the second protruding portion 628.

[0328] The seal 67 can be formed in an O-ring shape and can be configured to be in contact with the fourth inner surface 6274 and the fifth inner surface 6281. In particular, when the upper cover 62 rotates, the seal 67 can be prevented from being displaced upward and outward, thereby maintaining the position of the seal 67 and maintaining the airtightness between the upper cover 62 and the filter cover 66.

[0329] The inner frame 661 of the lower end of the filter cover 66 can be positioned below the second protruding portion 628, i.e., the seventh inner surface 6283, and can be closer to the outside than the fifth inner surface 6281. Accordingly, the filter cover 66 can be prevented from being displaced upward by the second protruding portion 628 by the inner frame 661. At this time, the contact protrusion 6613 formed at the top surface of the inner frame 661 can be in contact with the seventh inner surface 6283, thereby allowing the upper cover 62 to smoothly rotate.

[0330] Further, the first step portion 6661 and the second step portion 6662 can be formed above the inner rim 661. The first step portion 6661 and the second step portion 6662 can be configured to be in contact with the first protrusion 627 and the second protrusion 628, respectively.

[0331] As an example, the first step portion 6661 can include a first outer surface 6663 opposite to the second inner surface 6272, a second outer surface 6664 inclinedly extended from a lower end of the first outer surface 6663 and opposite to the third inner surface 6273, and a third outer surface 6665 extended downward from a lower end of the second outer surface 6664 and opposite to the fifth inner surface 6281. At this time, the second outer surface 6664 and the fifth inner surface 6281 can be spaced apart from each other in the left-right direction, and the seal 67 can be disposed between the second outer surface 6664 and the fifth inner surface 6281.

[0332] Further, the second step portion 6662 can include a fourth outer surface 6666 extended from a lower end of the third outer surface 6665 and opposite to the fourth inner surface 6274. The fourth inner surface 6274 and the fourth outer surface 6666 can be spaced apart from each other in the up-down direction, and the seal 67 can be disposed between the fourth inner surface 6274 and the fourth outer surface 6666. Further, the second step portion 6662 can include a fifth outer surface 6667 extended downward from an end of the fourth outer surface 6666. The fifth outer surface 6667 can be opposite to the fifth inner surface 6281 and can be extended downward to a height corresponding to the seventh inner surface 6283.

[0333] On the other hand, the seal 67 can be supported by the first protrusion 627, the second protrusion 628, the first step portion 6661, and the second step portion 6662 in the front-rear and left-right directions, and thus, the filter cover 66 and the upper cover body 62 can be air-tightly sealed and water leakage can be prevented. Further, the first protrusion 627 and the second protrusion 628 can be adjacent to the first step portion 6661 and the second step portion 6662 through the seal 67, but can not directly adhere to each other, and thus, the upper cover body 62 can be rotated.

[0334] Further, the circumferential surface of the filter cover 66 in which the inner rim 661, the first step portion 6661, and the second step portion 6662 are formed can be pressurized toward the inner surface side of the cover body 600 under the water pressure of the second space 6651 inside the cover body 600, and thus, air-tightness between the upper cover body 62 and the filter cover 66 can be more effectively configured.

[0335] In particular, the inner surface 667 of the filter cover 66 forming the second space 6651 can include an inner inclined surface 6672. The inner inclined surface 6672 can be formed at a position opposite to the seal 67. Further, the inner inclined surface 6672 can be configured to extend outward more as it extends downward. At this time, a normal line intersecting the inner inclined surface 6672 can be formed to pass through the center of the seal 67. Accordingly, if water is supplied to the filter 60 such that the pressure of the inside of the cover body 600, in particular, the second space 6651, increases, the inner inclined surface 6672 is pressurized to press the seal 67 in the outward direction, reducing the interval between the filter cover 66 and the upper cover body 62, thereby further improving air tightness.

[0336] The inner surface of the filter cover 66 can 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 and second vertical surfaces 6671 and 6673 can be perpendicular to the top surface of the filter cover 66.

[0337] Hereinafter, the installation process of the filter 60 having the above-described structure will be described with reference to the accompanying drawings.

[0338] Figure 29 is an exploded perspective view of a state aligned for coupling of the filter, viewed from one side. Further, Figure 30 is an exploded perspective view of a state aligned for coupling of the filter, viewed from the other side. Further, Figure 31 is a longitudinal sectional view of a state in which the head is separated from the filter.

[0339] As shown in the drawing, the upper end of the filter 60 can be inserted through the bottom surface of the opening of the head 50.

[0340] The filter 60 can have a structure coupled to the head body 52 by relative rotation of the cover body 600 with the filter cover 66 as a reference. Accordingly, in order for the filter 60 to be properly installed, it is necessary to maintain the water inlet portion 663 and the water outlet portion 664 in a state aligned with the inside of the cover body 600.

[0341] When the filter 60 is viewed from above, the water inlet portion 663 and the water outlet portion 664 can be aligned between the first guide protrusion 625 and the second guide protrusion 626 disposed on both sides. In detail, the water inlet portion 663 and the water outlet portion 664 can be disposed side by side on an extension line connecting the first guide protrusion 625 and the second guide protrusion 626. Accordingly, when viewed from above, the user can easily confirm by visual inspection that the filter 60 is aligned in a state capable of being installed in the head 50.

[0342] In particular, in the state in which the filter 60 is aligned for installation in the head, the water inlet portion 663 and the water outlet portion 664 can be aligned with the marker portion 6275 formed on the outside of the upper opening 6270. In addition, the marker portion 6275 can be on the same line as the short axis of the water inlet portion 663 or the water inlet port contact portion 6632 of the water inlet portion 663. Accordingly, the user can more accurately recognize the alignment state of the filter 60 through the configuration of the marker portion 6275 and the water inlet port contact portion 6632.

[0343] In addition, the marker portion 6275 can also be formed on the left and right sides and the upper and lower sides. The marker portion 6275 on the left and right sides can visualize the alignment state of the water inlet portion 663 and the water outlet portion 664, and the marker portion 6275 on the upper and lower sides can visualize the alignment state of the rotation protrusion 669 and the sensing member 668. Accordingly, the alignment state of the filter 60 can be accurately confirmed through the configuration of the marker portion 6275, the water inlet portion 663 and the water outlet portion 664, the rotation protrusion 669, and the sensing member 668 exposed to the top surface of the filter 60.

[0344] If the water inlet portion 663 and the water outlet portion 664 are not aligned before the filter 60 is installed in the head 50, the user can relatively rotate the filter cover 66 with the cover body 600 as a reference to align the filter in the above state.

[0345] In the state in which the filter 60 is aligned, the first guide protrusion 625 and the second guide protrusion 626 can be located on the left and right sides, respectively. In addition, in order to couple the filter 60 to the head, the user can configure the first guide protrusion 625 and the second guide protrusion 626 to be below the first guide hole 5231 and the second guide hole 5241, which are open to the bottom surface of the head body 52, respectively. At this time, the water inlet portion 663 and the water outlet portion 664 in the state in which the filter 60 is aligned can be located below the water inlet hole 5321 and the water outlet hole 5323.

[0346] In addition, in the state in which the filter 60 is aligned, the sensing member 668 can be located below the sensing hole 5327. In addition, the rotation protrusion 669 can be located below the rotation groove 5329.

[0347] In the state described above, the filter 60 can be started to be coupled to the head 50 by moving upward.

[0348] Figure 32 is a view showing a state in which the filter is started to be inserted into the head. In addition, Figure 33is Figure 32 a 33-33 cross-sectional view. In addition, Figure 34 is a cross-sectional view illustrating a configuration of a sensing device and a sensing member in a state in which the filter starts to be inserted into the head.

[0349] As shown, 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 starts to be coupled 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.

[0350] In particular, the first guide protrusion 625 is structurally unable to be inserted into the second guide 524, and thus, erroneous installation of the filter 60 can be prevented. Furthermore, the cross sections of the water inlet portion 663 and the water outlet portion 664 are formed to have directionality, and thus, the water inlet portion 663 and the water outlet portion 664 can be inserted into the water inlet hole 5321 and the water outlet hole 5323 only in the case in which the first guide protrusion 625 is inserted into the first guide 523 and the second guide protrusion 626 is inserted into the second guide 524.

[0351] In detail, when being inserted from the lower portion of the first guide hole 5231 of the first guide 523 into the inside of the first guide hole 5231, the protrusion extension portion 6256 can be inserted through the spaced interval G between the first guide portion 5232 and the head inner portion 53.

[0352] That is, the first guide protrusion 625 can be inserted into the inside of the first guide 523, and the protrusion extension portion 6256 can be inserted between the first guide portion 5232 and the head inner portion 53. As the first guide protrusion 625 is inserted into the first guide 523, the first front inclined portion 6253 or the first rear inclined portion 6254 moves in a state in which the first guide portion 5232 is contacted.

[0353] At this time, the second guide protrusion 626 can be inserted into the inside of the second guide 524. That is, the first guide protrusion 625 and the second guide protrusion 626 can be simultaneously inserted into and moved by the first guide 523 and the second guide 524.

[0354] On the other hand, in the case where the user installs the filter 60 by mistake, the first guide protrusion 625 can attempt to be inserted to the side of the second guide hole 5241. At this time, the protrusion extension 6256 cannot be inserted to the relatively narrow interval between the second guide portion 5242 and the inside of the head portion 53. Therefore, the first guide protrusion 625 cannot be inserted to the second guide 524. That is, the filter 60 can have a structure that is installed only in a set configuration, by which accurate installation of the water inlet portion 663 and the water outlet portion 664 can be ensured.

[0355] In addition, the water inlet portion 663 and the water outlet portion 664 can be inserted to the corresponding water inlet hole 5321 and water outlet hole 5323, respectively. At the moment when the first guide protrusion 625 and the second guide protrusion 626 are inserted to the first guide 523 and the second guide 524, the water inlet portion 663 and the water outlet portion 664 can be inserted to the water inlet hole 5321 and the water outlet hole 5323, respectively.

[0356] At this time, since the water inlet portion 663 and the water outlet portion 664 are in an aligned state, no additional alignment work is required, and accurate installation can be achieved only by inserting the first guide protrusion 625 and the second guide protrusion 626 to the first guide 523 and the second guide 524.

[0357] In addition, when the first guide protrusion 625 and the second guide protrusion 626 are inserted to the first guide 523 and the second guide 524, respectively, the sensing member 668 is in a state of not being inserted to the sensing hole 5327.

[0358] In the state where the water inlet portion 663 and the water outlet portion 664 are inserted to the water inlet hole 5321 and the water outlet hole 5323, respectively, the height of the sensing member 668 is relatively low and is located below the sensing hole 5327. At this time, the upper end of the sensing member 668, that is, the interval G1 between the magnet 6681 and the sensing portion 552 can be a distance at which the sensing portion 552 cannot sense the magnet 6681.

[0359] Therefore, in the initial stage of the combination of the filter 60 and the head portion 50, the sensing member 668, that is, the magnet 6681 cannot be sensed by the sensing portion 552, and thus the water supply valve 102 remains in a closed state. In addition, since the water supply valve 102 remains in a closed state, water leakage during the installation of the filter 60 can be fundamentally prevented.

[0360] Figure 35 is a view showing a state in which the filter is inserted to the head portion and rotated by a set angle. In addition, Figure 36 is Figure 35 a 36-36 sectional view of the 36-36.

[0361] As shown, the filter 60 can be rotated in a state of being inserted into the head 50 to complete the combination with the head 50. At this time, the cover body 600 can be rotated and moved upward with the filter cover 66 as a reference, and the filter cover 66 can be moved upward in a state of being combined with the head interior 53.

[0362] In detail, as the cover body 600 is rotated, the first guide protrusion 625 and the second guide protrusion 626 can be moved upward along the first guide 523 and the second guide 524, respectively. As an example, the first front inclined portion 6253 or the first rear inclined portion 6254 can be moved while maintaining a state of being in contact with the first guide portion 5232. At this time, the protrusion extension portion 6256 can be moved in a state of being located at a gap G between the first guide portion 5232 and the head interior 53.

[0363] As the cover body 600 is rotated, the first guide protrusion 625 and the second guide protrusion 626 can be continuously moved along the first guide 523 and the second guide 524. In addition, the water inlet portion 663 and the water outlet portion 664 can be moved upward to be inserted into the water inlet hole 5321 and the water outlet hole 5323. The water inlet portion 663 and the water outlet portion 664 can be moved upward by the water inlet ring 541 and the water outlet ring 542, respectively. Accordingly, the periphery of the water inlet portion 663 and the water outlet portion 664 can be hermetically implemented using the water inlet ring 541 and the water outlet ring 542.

[0364] The cover body 600 can be rotated until the first guide protrusion 625 and the second guide protrusion 626 are located before the end portions of the first guide 523 and the second guide 524 to perform the insertion of the water inlet portion 663 and the water outlet portion 664.

[0365] In addition, the rotation protrusion 669 and the sensing member 668 can also be inserted into the inner sides of the rotation groove 5329 and the sensing hole 5237, respectively. At this time, the rotation protrusion 669 is in contact with the inner surface of the rotation groove 5329, and thus, the stable rotation of the cover body 600 can be ensured, and the torque generated when the cover body 600 is rotated is not transmitted to the water inlet portion 663 and the water outlet portion 664.

[0366] Figure 37 is a front view of a state in which the filter is combined with the head. In addition, Figure 38 is a rear view of a state in which the filter is combined with the head. In addition, Figure 39 is Figure 37 is a longitudinal sectional view of the cover body 600. In addition, Figure 40is a sectional view showing the configuration of the sensing means and sensing member in a state in which the filter is completely inserted into the head.

[0367] As shown, in a state in which the filter 60 is completely combined with the head body 52, the first guide protrusion 625 can be positioned at the upper end of the first guide 523. At this time, the first guide protrusion 625 can be positioned within the confirmation window 5211. The confirmation window 5211 can be open to the front, and the first guide protrusion 625 can be exposed to the front through the confirmation window 5211. Accordingly, the user can confirm that the connection rib 6255 is positioned at the center of the confirmation window 5211 and can visually confirm that the filter 60 is completely installed in the head 50.

[0368] Further, in a state in which the filter 60 is completely combined with the head body 52, the second guide protrusion 626 can be positioned at the upper end of the second guide. Further, the second guide protrusion 626 can be positioned within the rear confirmation window 5212. At this time, the restriction portion 5213 can be engaged and restricted by the restriction groove 6266 of the second guide protrusion 626. The restriction portion 5213 is formed in a shape similar to a ring, and thus can be elastically deformed when combined with or separated from the restriction groove 6266 and can be press-combined with the restriction groove 6266.

[0369] In detail, at the moment in which the filter 60 is completely combined with the head body 52, the restriction groove 6266 and the restriction portion 5213 can be engaged and restricted with each other. Further, the user can determine that the filter 60 is normally completely combined with the head 50 by the engagement sound or vibration generated at this time. That is, the user can determine whether the filter 60 is completely installed by the engagement sound and engagement vibration generated when the cover body 600 is rotated, even without directly confirming the confirmation window 5211 with the naked eye.

[0370] In addition, in a state in which the filter 60 is combined with the head body 52, the cover body rib 6241 can be in a state of being in contact with the lower end of the head body 52. Accordingly, the user can also determine whether the filter 60 is completely combined by the interval between the cover body rib 6241 and the head body 52.

[0371] On the other hand, in a state in which the filter 60 is completely installed in the head body 52, the water inlet portion 663 and the water outlet portion 664 can be in a state of being inserted into the inside of the water inlet hole 5321 and the water outlet hole 5323 at a set depth.

[0372] Further, if the water inlet portion 663 and the water outlet portion 664 are completed to be inserted into the water inlet hole 5321 and the water outlet hole 5323, the inside of the filter 60 and the water inlet flow path 5220 and the water outlet flow path 5251 of the head 50 can communicate with each other.

[0373] On the other hand, in a state where the filter 60 is completed to be combined with the head 50, the sensing member 668 can be in a state where it is completely inserted into the inside of the sensing hole 5327. Further, the upper end of the sensing member 668, i.e., the top surface of the magnet 6681 can be located at the highest position through the water inlet hole 5321. At this time, the upper end of the sensing member 668 can be inserted into a position corresponding to the upper end of the hole frame 53271.

[0374] Further, in a state where the sensing member 668 is completely inserted, the top surface of the sensing member 668, i.e., the interval G2 between the magnet 6681 and the sensing portion can be the minimum interval. At this time, the interval G2 between the magnet 6681 and the sensing portion 552 is the interval that the filter sensing device 55 can recognize the filter.

[0375] Therefore, the filter sensing device 55 can recognize that the filter is completed to be installed by the change in the magnetic field of the magnet 6681. Further, if it is recognized that the filter 60 is completed to be installed, the water supply valve 102 can be opened. By opening the water supply valve 102, water can be supplied to the filter assembly 40 through the water supply flow path 100, and water can be supplied to the filter 60 through the valve 56 in the opened state.

[0376] Hereinafter, the water flow state of the filter assembly 40 in a state where the filter 60 is combined will be described in detail with reference to the drawings.

[0377] Figure 41 FIG. 7 is a view illustrating the water flow in a state where the filter and the head are completed to be combined. Further, Figure 42 FIG. 8 is a sectional view illustrating the connection state of the water inlet portion and the water outlet portion in a state where the filter and the head are completed to be combined.

[0378] As illustrated, if the filter 60 is completed to be combined with the head 50, the water inlet portion 663 and the water outlet portion 664 can be inserted into the inside of the water inlet hole 5321 and the water outlet hole 5323, respectively.

[0379] In detail, the upper end of the water inlet portion 663 can be located at a position closer to the upper side through the water inlet port ring 541. Further, the upper end of the water inlet portion 663 can be in contact with the contact portion 5633, and the piston 563 can be moved upward, thereby opening the housing passage 5615.

[0380] Water supplied through the water inlet flow path 5220 can flow into the piston accommodation portion 5610 through the cap through-hole 5623. The piston accommodation portion 5610 is formed in an oval shape so as to secure a flow path space S between the seat portion 5631. Further, in a state in which the piston 563 moves upward, water flows through the housing to the water inlet accommodation portion via the flow path space S. Further, water flowing into the water inlet accommodation portion 5616 can be supplied to the inside of the filter 60 through the water inlet flow path 6631 of the water inlet portion 663 inserted into the water inlet accommodation portion 5616. Accordingly, water flowing into the water inlet pipe 103 flows into the inside of the filter 60 via the water inlet flow path 5220 of the head portion 50, the valve 56, and the water inlet flow path 6631.

[0381] Further, the flow path flowing into the inside of the filter 60 can be guided to the outside of the filter element 63 through the first space 6610. Further, water outside the filter element 63 moves to the hollow of the filter element 63 through the filter element 63. At this time, water can be purified in the process of passing through the filter element 63. The purified water can flow upward toward the second space 6651 through the hollow 631 and be discharged through the water outlet portion 664.

[0382] The upper end of the water outlet portion 664 can be located at a position closer to the upper side than the water outlet ring 542. Accordingly, purified water of the filter 60 can flow toward the water outlet flow path 5251 through the water outlet portion 664 and be discharged to the outside through the water outlet pipe 104.

[0383] During the flow of water through the filter 60, the periphery of the water inlet portion 663 and the water outlet portion 664 can be air-tight by the water inlet ring 541 and the water outlet ring 542 without water leakage. To this end, the height H1 of the water inlet portion 663 and the water outlet portion 664 can be extended higher than the height H2 of the water inlet ring 541 and the water outlet ring 542 with the top surface of the filter cover 66 as a reference.

[0384] As an example, the height H2 of the water inlet ring 541 and the water outlet ring 542 can be located at a position slightly higher than the middle position of the up-and-down direction height H1 of the water inlet portion 663 and the water outlet portion 664. Further, the water inlet ring 541 and the water outlet ring 542 can be located at a position spaced apart from the upper end of the water inlet portion 663 and the water outlet portion 664 by a set distance.

[0385] Further, at least the portions of the circumferences of the water inlet portion 663 and the water outlet portion 664 passing through the water inlet ring 541 and the water outlet ring 542 can be formed to have cross sections in the shape of an ellipse corresponding to the water inlet portion 663 and the water outlet portion 664. Accordingly, the water inlet portion 663 and the water outlet portion 664 are airtight and do not leak water, thereby enabling water to flow within the head 50.

[0386] After the filter 60 is separated from the head 50 after purifying or filtering a set amount of water at a set time, the filter 60 can be replaced with a new filter 60. In order to separate the filter 60 from the head 50, the cover 600 can be rotated and moved downward in the reverse order of the above-described procedure.

[0387] At this time, the water inlet portion 663 and the water outlet portion 664 are moved downward by the reverse rotation of the filter 60, thereby being able to be separated from the water inlet hole 5321 and the water outlet hole 5323. Further, the valve 56 can be returned to the closed state by the downward movement and separation of the water inlet portion 663, and water flowing through the water inlet pipe 103 is not leaked to the outside of the head 50.

[0388] In particular, even if the filter 60 is not completely separated, if the upper end of the sensing member 668 is separated from the sensing portion 552 by a distance that is not sensed as the interval G2, the water supply valve 102 is closed. Accordingly, when an initial operation for separating the filter 60 is performed, the water supply valve 102 is closed, thereby being able to fundamentally prevent water leakage during the process of separating the filter 60.

[0389] Hereinafter, the control method of the home appliance device according to whether the filter is recognized or not will be described in detail with reference to the accompanying drawings.

[0390] Figure 43 is a block diagram illustrating a control signal flow of a home appliance device according to an embodiment of the present application. Further, Figure 44 is a flowchart illustrating a control method according to whether a filter of a home appliance device is recognized or not.

[0391] As shown in the drawing, the home appliance apparatus of the present embodiment can recognize the installation of the filter 60. At this time, the filter sensing device 55 can sense whether the filter 60 is installed to the head 50. Further, the filter sensing device 55 can determine whether the authentic filter 60 having the sensing member 668 is installed to the head 50. Further, in the case of installing the unauthentic filter not having the sensing member 668 or not having the sensing member 668 disposed at the designated position, the control unit 70 determines that the filter 60 is not sensed and guides this to the user. Accordingly, the user is guided to use the authentic filter 60, and thus it is possible to prevent the performance deterioration or the problems caused thereby due to the use of the unauthentic filter.

[0392] In detail, the home appliance apparatus can include a control unit 70 that controls the overall operation and action of the home appliance apparatus. Further, the control unit 70 is connected with the filter sensing device 55 and determines whether the authentic filter 60 is installed.

[0393] Further, the control unit 70 is connected with a display 71 and can output whether the filter 60 is installed through the display 71. At this time, the display 71 can not only output whether the filter 60 is installed, but also output whether the water apparatus can act. As an example, the display 71 can be provided to the cabinet 10 or the door 20 of the refrigerator 1.

[0394] Further, the control unit 70 can be connected with a speaker 72 and output whether the filter 60 is installed through the speaker 72 in voice or sound. At this time, the speaker 72 can not only output whether the filter 60 is installed, but also output whether the water apparatus can act.

[0395] Further, the control unit 70 is connected with a communication unit 73 and transmits whether the filter 60 is installed to a remote apparatus 3. As an example, the remote apparatus 3 can be a portable phone or other home appliance apparatus that can output a screen or output voice. The remote apparatus 3 can not only output whether the filter 60 is installed, but also output whether the water apparatus can act.

[0396] Further, the control unit 70 can be connected with the water supply valve 102 and control the action of the water supply valve 102 according to whether the filter is recognized. Further, the control unit 70 can also control the actions of the dispenser valve 107 connected to the dispenser 23 and the ice maker valve 106 connected to the ice maker 121 by being connected with the dispenser valve 107 and the ice maker valve 106.

[0397] In detail, the filter sensing device 55 can be turned on to be in a state capable of sensing in a state where the home appliance is supplied with power. Also, the filter sensing device 55 transmits a sensing signal of the filter 60 to the control portion 70 (S100).

[0398] In a case of an initial setting of the home appliance or a replacement period of the filter, the filter 60 can be installed. At this time, a filter of a different kind from the filter 60 or an unauthenticated filter can also be installed.

[0399] That is, although the filter is installed in the head portion 50, in a case where the filter is an unauthenticated filter, since the sensing member 668 is not provided, the filter sensing device 55 fails to sense the filter although the filter is installed.

[0400] In a case where the authenticated filter 60 is installed, the sensing member 668 can be sensed by the filter sensing device 55. Also, according to whether the authenticated filter 60 is installed or not, the filter sensing device 55 can transmit a sensing result to the control portion 70, and the control portion 70 judges whether the filter 60 is recognized based on the sensing result (S120).

[0401] On the other hand, if the filter 60 is recognized at the control portion 70, it can be output that the filter 60 is recognized.

[0402] As an example, the control portion 70 can output that the filter 60 is recognized to the display 71. Thus, the user can confirm whether the authenticated filter 60 is installed or not through the recognition result of the filter 60 displayed on the display 71.

[0403] As another example, the control portion 70 can output the recognition result of the filter 60 to the speaker 72. Thus, the user can confirm whether the authenticated filter 60 is installed or not through a voice or a sound output from the speaker 72.

[0404] As still another example, the control portion 70 can transmit the recognition result of the filter 60 to a remote device 3 separated from the home appliance in a wireless communication manner through the communication portion 73. Thus, the user can confirm whether the authenticated filter 60 is installed or not through the remote device 3 (S130).

[0405] Also, the control portion 70 can open the water supply valve 102 in a case where the filter 60 is recognized. Thus, when the water device operates, clean water can be smoothly supplied.

[0406] Of course, if the water supply valve 102 is omitted, the distributor valve 107 or the ice maker valve 106 can be opened according to the operating status of the water equipment. Alternatively, the water supply valve 102 can be opened together with the distributor valve 107 or the ice maker valve 106. (S140)

[0407] In the state described above, water can be supplied to the water equipment when the user operates the water equipment or when the water equipment starts operating. (S150)

[0408] On the other hand, the control unit 70 can close the water supply valve 102 if the filter 60 is not recognized. Therefore, if an uncertified filter is installed or no filter is installed, the water supply valve 102 is closed, thereby stopping the use of water equipment in the water supply path.

[0409] That is, it can fundamentally prevent performance degradation or failure to properly purify water caused by using uncertified filters. Furthermore, it can prevent the possibility of water leakage through the water equipment during the replacement of the filter 60. (S210)

[0410] Furthermore, the control unit 70 can output that the filter 60 is not recognized, so that the user is aware of the use of the uncertified filter 60. Alternatively, it can guide the user to use the certified filter 60 by outputting a status indicating that the home appliance cannot be used normally.

[0411] As an example, the control unit 70 can output to the display 71 that the filter 60 has not been identified. Therefore, the user can know through the display 71 that the filter 60 has not functioned properly and can be aware of the possibility of abnormal operation of the water equipment.

[0412] As another example, the control unit 70 can output to the speaker 72 that the filter 60 has not been identified. Therefore, the user can know that the filter 60 has not been identified as normal by the voice or sound output from the speaker 72, and can be aware of the possibility of abnormal operation of the water equipment.

[0413] As another example, the control unit 70 can wirelessly transmit information about the failure to recognize the filter 60 to the remote device 3, which is isolated from the home appliance, via the communication unit 73. Therefore, the user can be aware of the failure to recognize the filter 60 and the possibility of abnormal operation of the water equipment through the remote device 3.

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 is attached to the head by rotation, forming an upward opening; A filter component, housed inside the enclosure, is used to purify water; Filter cover, which covers the upper opening, rotates relative to the housing; and A sealing element to ensure an airtight seal between the cover and the filter cover; The filter cover includes: The inlet section allows water to flow in. The water outlet allows water to flow out; and The sensing component protrudes upward from a position corresponding to the filter sensing device disposed on the head, and is sensed by the filter sensing device; If the cover rotates and engages with the head, the water inlet, the water outlet, and the sensing component move linearly upward inside the head.

2. The water filter according to claim 1, wherein, As the cover rotates, the sensing component moves closer to the filter sensing device.

3. The water filter according to claim 1, wherein, The water inlet and the water outlet protrude in the same direction as the sensing component.

4. The water filter according to claim 1, wherein, At least a portion of the sensing element is formed of a magnet, which is disposed on the top surface of the sensing element.

5. The water filter according to claim 1, wherein, The water inlet and the water outlet are arranged separately on the left and right sides. The sensing component is disposed in the area between the water inlet and the water outlet.

6. The water filter according to claim 1, wherein, The filter cover also includes a rotating protrusion that protrudes upward to fix the filter cover; The sensing component and the rotating protrusion are disposed between the water inlet and the water outlet.

7. The water filter according to claim 6, wherein, The extension lines passing through the water inlet and the water outlet intersect each other with the extension lines passing through the rotating protrusion and the sensing member.

8. The water filter according to claim 6, wherein, A pair of guide protrusions for attaching and detaching the water filter are formed on the outer surface of the cover. The pair of guide protrusions are configured to face each other.

9. The water filter according to claim 8, wherein, The water inlet and the water outlet are disposed between a pair of guide protrusions and are arranged on the same extension line as the pair of guide protrusions.

10. The water filter according to claim 8, wherein, Before the water filter is installed, the pair of guide protrusions are on the same extension line as the water inlet and the water outlet. When the cover is rotated to install the water filter, the pair of guide protrusions are on the same extension line as the rotating protrusion and the sensing member.

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