Filter element assembly and water heater

Abstract

The invention discloses a filter element assembly and a water heater, and the filter element assembly comprises a connecting seat which is provided with an inlet and an outlet; the filter element is in rotary clamping fit with the connecting seat and comprises a shell, a filter material box and a water sealing structure, the shell is provided with a water inlet and a water outlet, the filter material box and the water sealing structure are arranged in the shell, a water outlet channel communicated with the water outlet is formed in the filter material box, the peripheral wall of the filter material box and the shell jointly define a water inlet channel, the water inlet channel is communicated with the water inlet, and the water inlet channel is communicated with the water outlet. After the filter element and the connecting seat are assembled, the water sealing structure opens the water inlet, the water inlet is suitable for being communicated with the inlet, and the water outlet is suitable for being communicated with the outlet; and after the filter element is separated from the connecting seat, the water sealing structure blocks the water inlet. According to the filter element assembly, liquid can be filtered, safety and sanitation of water quality are ensured, after the filter element is separated from the connecting base, leakage of residual liquid in the filter element can be avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and more specifically, to a filter element assembly and a water heater. Background Art

[0002] As people's living standards improve, more and more users begin to pay attention to water quality. In related technologies, a filter element is set to filter the liquid. However, when the filter element is removed, such as when the filter element is replaced or repaired, the residual liquid in the filter element is easy to leak out of the filter element. The leaked liquid will pollute the objects in the environment, such as leaking onto the floor, affecting the user's experience. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a filter element assembly, which can filter liquid to ensure the safety and hygiene of water quality, and can prevent the leakage of residual liquid in the filter element after the filter element is separated from the socket, thereby improving the user experience.

[0004] Another object of the present invention is to provide a water heater having the filter element assembly.

[0005] According to an embodiment of the present invention, a filter element assembly includes: a socket, which has an inlet and an outlet; a filter element, which is rotatably engaged with the socket, and the filter element includes a shell, a filter material box and a water sealing structure, the shell has a water inlet and a water outlet, the filter material box and the water sealing structure are arranged in the shell, a water outlet channel connected to the water outlet is formed in the filter material box, the outer peripheral wall of the filter material box and the shell jointly define a water inlet channel, and the water inlet channel is connected to the water inlet, wherein, after the filter element and the socket are assembled, the water sealing structure opens the water inlet, the water inlet is suitable for connecting with the inlet, and the water outlet is suitable for connecting with the outlet; after the filter element is separated from the socket, the water sealing structure blocks the water inlet.

[0006] According to the filter element assembly of the embodiment of the present invention, a water outlet channel connected with the water outlet is formed in the filter material box, and the outer peripheral wall of the filter material box and the shell body jointly define a water inlet channel, and the water inlet channel is connected with the water inlet. After the filter element and the socket are assembled, the water sealing structure opens the water inlet of the filter element, the water inlet is connected with the inlet of the socket, and the water outlet is connected with the outlet of the socket, so that the filter element can filter the liquid to ensure the safety and hygiene of the water quality, and the flow rate of the liquid entering the filter material box is larger, and the flow of the liquid is smoother, ensuring a good filtering effect on the liquid; after the filter element is separated from the socket, the water sealing structure blocks the water inlet, so that the liquid remaining in the filter element cannot flow out from the water inlet due to the blocking effect of the water sealing structure, effectively avoiding the leakage of the residual liquid in the filter element, improving the user experience, and reducing safety hazards and the user's labor.

[0007] In addition, the filter element assembly according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to the filter element assembly of some embodiments of the present invention, the water sealing structure includes: a water stop pad, which is arranged in the shell and located between the filter box and the water inlet; and an elastic member, which is arranged in the shell and located between the filter box and the water stop pad to drive the water stop pad to seal the water inlet.

[0009] According to some embodiments of the present invention, the water stop pad is provided with a push rod extending in the axial direction of the shell, and one end of the push rod facing away from the filter box exceeds the water stop pad and passes through the shell through a positioning hole on the shell.

[0010] According to some embodiments of the present invention, a side of the socket facing the filter element is provided with a push rod extending toward the filter element, and an end of the push rod facing away from the socket extends into the housing through the inlet.

[0011] According to some embodiments of the present invention, the water inlets are multiple and spaced apart along the circumferential direction of the shell, the water outlet is provided at the center of the shell, and the water stop pad is annular and extends along the circumferential direction of the shell.

[0012] According to some embodiments of the present invention, the water-stop pad is a silicone rubber part, an EPDM rubber part, a NBR rubber part or a fluororubber part.

[0013] According to some embodiments of the present invention, the inner circumferential wall of the shell at one end away from the water inlet has fixing ribs, and the fixing ribs are multiple and spaced apart along the circumferential direction of the shell, and the filter box is located in the space defined by the multiple fixing ribs.

[0014] According to some embodiments of the present invention, the filter box includes: a filter box upper cover, the side of the filter box upper cover facing away from the water inlet has an annular filter screen extending in the circumferential direction of the filter box upper cover, the outer peripheral wall of the filter box upper cover and the shell together define the water inlet channel, and the filter box upper cover has a connecting port for connecting the water outlet channel and the water outlet; a filter box lower shell, one end of the filter box lower shell close to the water inlet extends into the filter box upper cover, the filter box lower shell is used to accommodate filter material, the water outlet channel is defined in the filter box lower shell, and the peripheral wall of the filter box lower shell has a water opening for connecting the water inlet channel and the water outlet channel.

[0015] According to some embodiments of the present invention, the outer peripheral wall of the filter box lower shell has limiting ribs extending along the circumferential direction of the filter box lower shell, and the end of the filter box upper cover facing away from the water inlet is supported on the limiting ribs.

[0016] According to some embodiments of the present invention, one end of the shell provided with the water outlet has an inwardly extending extension piece, the extension piece has a connecting channel therein, and the connecting channel is in communication with the communication port and the water outlet.

[0017] According to some embodiments of the present invention, the end of the filter box upper cover facing the water inlet has a protrusion, the communication port passes through the protrusion, and one end of the extension piece is sleeved outside the protrusion.

[0018] According to some embodiments of the present invention, a one-way valve is provided between the water outlet channel and the water outlet to only allow liquid to flow from the water outlet channel to the water outlet.

[0019] According to some embodiments of the present invention, the inner circumferential wall of the socket is provided with a sliding rail protruding from the inner circumferential wall of the socket, the sliding rail is spaced apart from the inner bottom wall of the socket to define a accommodating space, the outer circumferential wall of the shell is provided with a sliding rib protruding from the outer circumferential wall of the shell, the sliding rib is suitable for being located in the accommodating space, and along the rotation direction of the socket when the socket is installed, the surface of the sliding rib facing away from the inner bottom wall of the socket is inclined toward a direction away from the inner bottom wall of the socket.

[0020] According to some embodiments of the present invention, a valve assembly is provided in the socket, and the valve assembly has an on state and a off state; wherein, after the filter element is assembled with the socket, the valve assembly is in the on state, the water inlet is connected with the inlet, and the water outlet is connected with the outlet; wherein, after the filter element is separated from the socket, the valve assembly is in the off state, the water inlet is separated from the inlet, and the water outlet is separated from the outlet.

[0021] According to some embodiments of the present invention, when the filter element is assembled with the socket, the filter element contacts and cooperates with the valve assembly so that the valve assembly switches from the cut-off state to the on state.

[0022] According to some embodiments of the present invention, in the on state, the inlet is isolated from the outlet; and in the off state, the inlet is connected to the outlet.

[0023] The water heater according to the embodiment of the present invention comprises the filter element assembly according to the embodiment of the present invention.

[0024] According to the water heater of the embodiment of the present invention, a water outlet channel connected with the water outlet is formed in the filter box, and the outer peripheral wall of the filter box and the shell jointly define a water inlet channel, and the water inlet channel is connected with the water inlet. After the filter element and the socket are assembled, the water sealing structure opens the water inlet of the filter element, the water inlet is connected with the inlet of the socket, and the water outlet is connected with the outlet of the socket, so that the filter element can filter the liquid to ensure the safety and hygiene of the water quality, and the flow rate of the liquid entering the filter box is larger, and the flow of the liquid is smoother, ensuring a good filtering effect on the liquid; after the filter element is separated from the socket, the water sealing structure blocks the water inlet, so that the liquid remaining in the filter element cannot flow out from the water inlet due to the blocking effect of the water sealing structure, effectively avoiding the leakage of the residual liquid in the filter element, improving the user experience, and reducing safety hazards and the user's labor.

[0025] According to some embodiments of the present invention, the water heater includes a housing and a heat exchanger for heating liquid, wherein the heat exchanger is disposed in the housing and has an exchange inlet and an exchange outlet, wherein the exchange inlet is in communication with the inlet.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is an exploded view of a filter element assembly according to a first embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of a filter element assembly according to a first embodiment of the present invention, wherein the filter element is separated from the receiving seat;

[0030] Figure 3 is a schematic structural diagram of a filter element assembly according to a first embodiment of the present invention, wherein a water sealing structure blocks a water inlet;

[0031] Figure 4 is a schematic structural diagram of a filter element assembly according to a first embodiment of the present invention, wherein the water sealing structure opens the water inlet;

[0032] Figure 5 is a top view of a filter element of a filter element assembly according to a first embodiment of the present invention;

[0033] Figure 6 is a bottom view of a socket of a filter element assembly according to a first embodiment of the present invention;

[0034] Figure 7 is an exploded view of a filter element assembly according to a second embodiment of the present invention;

[0035] Figure 8 is a schematic structural diagram of a filter element assembly according to a second embodiment of the present invention, wherein the filter element is separated from the receiving seat;

[0036] Fig. 9 yes Figure 8 The middle circle shows the enlarged structural schematic diagram of A;

[0037] Fig.10 is a schematic structural diagram of a filter element assembly according to a second embodiment of the present invention, wherein a water sealing structure blocks a water inlet;

[0038] Fig.11 is a schematic structural diagram of a filter element assembly according to a second embodiment of the present invention, wherein the water sealing structure opens the water inlet;

[0039] Fig.12 is a top view of a filter element of a filter element assembly according to a second embodiment of the present invention;

[0040] Fig.13 is a bottom view of a socket of a filter element assembly according to a second embodiment of the present invention;

[0041] Fig.14 is a schematic structural diagram of a filter element assembly according to an embodiment of the present invention;

[0042] Fig.15 is a top view of a filter material box upper cover of a filter element assembly according to an embodiment of the present invention;

[0043] Fig.16 is a cross-sectional view of a filter material box upper cover of a filter element assembly according to an embodiment of the present invention;

[0044] Fig.17 is a schematic structural diagram of a filter material box of a filter element assembly according to an embodiment of the present invention;

[0045] Fig.18 is a cross-sectional view of a filter material box of a filter element assembly according to an embodiment of the present invention;

[0046] Fig.19is a schematic structural diagram of a filter element lower shell of a filter element assembly according to an embodiment of the present invention;

[0047] Fig. 20 is a schematic diagram of the structure of a water heater according to some embodiments of the present invention;

[0048] Fig.21 is a schematic structural diagram of a water heater according to some other embodiments of the present invention;

[0049] Fig. 22 is a schematic structural diagram of a filter element assembly according to a third embodiment of the present invention, wherein the filter element and the receiving seat are assembled;

[0050] Fig.23 is a structural schematic diagram of a connector of a filter element assembly according to a third embodiment of the present invention;

[0051] Fig.24 is a schematic structural diagram of a filter element assembly according to a third embodiment of the present invention, wherein the filter element is separated from the receiving seat;

[0052] Fig.25 is a schematic structural diagram of a filter element assembly according to a fourth embodiment of the present invention, wherein the filter element and the receiving seat are assembled;

[0053] Fig.26 is a structural schematic diagram of a connector of a filter element assembly according to a fourth embodiment of the present invention;

[0054] Fig. 27 is a schematic structural diagram of a filter element assembly according to a fourth embodiment of the present invention, wherein the filter element is separated from the receiving seat;

[0055] Fig.28 is a cross-sectional view of a filter element assembly according to a fourth embodiment of the present invention;

[0056] Fig.29 is a structural schematic diagram of a first stop valve or a second stop valve of a filter element assembly according to an embodiment of the present invention, wherein the valve assembly is in a cut-off state;

[0057] Fig.30 is a structural schematic diagram of a first stop valve or a second stop valve of a filter element assembly according to an embodiment of the present invention, wherein the valve assembly is in a conducting state;

[0058] Fig.31 Schematic diagram of the structure of the elastic member of the filter element assembly according to an embodiment of the present invention.

[0059] Reference numerals:

[0060] 100, filter element; 200, filter element assembly; 300, water heater; 301, exchange inlet; 302, exchange outlet; 303, housing; 304, heat exchanger;

[0061] 10. Shell; 11. Filter element lower shell; 12. Filter element upper cover; 13. Water inlet channel; 14. Annular groove; 111. Fixing rib; 121. Water inlet; 122. Water outlet; 123. Extension piece; 124. Connecting channel; 125. One-way valve; 126. Positioning hole; 127. Sliding rib;

[0062] 20, filter box; 21, filter box upper cover; 22, filter box lower shell; 23, water outlet channel; 211, positioning protrusion; 212, supporting ribs; 213, annular filter screen; 214, connecting port; 215, protrusion; 221, limiting ribs; 222, water outlet;

[0063] 30. Water stop pad; 31. Positioning groove; 32. Push rod;

[0064] 40. elastic member; 41. first positioning section; 42. second positioning section;

[0065] 50. Seat; 51. Inlet; 52. Outlet; 53. Slide rail; 54. Accommodation space;

[0066] 60. Water sealing structure;

[0067] 71, first sealing ring; 72, second sealing ring; 73, third sealing ring; 74, fourth sealing ring; 75, fifth sealing ring; 76, sixth sealing ring; 77, seventh sealing ring; 78, eighth sealing ring;

[0068] 80, valve assembly; 81, first stop valve; 82, second stop valve; 811, first valve seat; 812, first valve core; 813, first communication channel; 814, first return spring; 821, second valve seat; 822, second valve core; 823, second communication channel; 824, second return spring;

[0069] 91. First installation cavity; 92. Second installation cavity; 93. Communication cavity. DETAILED DESCRIPTION

[0070] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, a first feature "above" or "below" the second feature may include the first and second features being directly in contact, or may include the first and second features not being in direct contact but being in contact through another feature between them, and a first feature "above", "above" and "above" the second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is horizontally higher than the second feature.

[0073] The filter element assembly 200 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0074] Reference Figure 1-Figure 14 As shown, the filter element assembly 200 according to the embodiment of the present invention may include: a socket 50 and a filter element 100 .

[0075] Specifically, the socket 50 has an inlet 51 and an outlet 52, the filter element 100 includes a housing 10, a filter box 20 and a water sealing structure 60, the housing 10 has a water inlet 121 and a water outlet 122, the filter box 20 and the water sealing structure 60 are arranged in the housing 10, and the filter box 20 and the water sealing structure 60 can be protected by the housing 10 to prevent the filter box 20 and the water sealing structure 60 from being exposed and damaged. A water outlet channel 23 is formed in the filter box 20, and the water outlet channel 23 is connected to the water outlet 122. The outer peripheral wall of the filter box 20 and the housing 10 jointly define a water inlet channel 13, and the water inlet channel 13 is connected to the water inlet 121. After the filter element 100 and the socket 50 are assembled, the water sealing structure 60 opens the water inlet 121, and the water inlet 121 can be connected to the inlet 51, and the water outlet 122 can be connected to the outlet 52.

[0076] Thus, the liquid enters the filter element 100 from the inlet 51 through the water inlet 121, and the liquid entering the filter element 100 flows into the filter box 20 through the water inlet channel 13. The liquid can be filtered in the filter box 20, and then flows out of the filter element 100 from the water outlet 122 through the water outlet channel 23, and finally flows out from the outlet 52, so as to filter the liquid, effectively ensure the safety and sanitation of the water quality, and make the flow rate of the liquid entering the filter box 20 larger, the flow of the liquid is smoother, and ensure the good filtering effect of the liquid. At the same time, the filter box 20 can be protected by the water sealing structure 60 to prevent the filter element 100 from being damaged by external impurities entering the filter box 20 through the water inlet 121 after production or during transportation, so as to ensure the good filtering effect of the filter element 100, and the water inlet channel 13 and the water outlet channel 23 can be separated by the filter box 20 to prevent the liquid from mixing and improve the filtering effect of the filter element 100.

[0077] The inventor of the present application has found that in the related art, when the filter element is disassembled, such as for replacement or repair, the liquid remaining in the filter element is prone to leak, and the leaked liquid may contaminate items in the environment, such as leaking onto the floor, affecting the user's experience. In order to solve the problem of residual liquid leaking after the filter element is disassembled, in the present invention, Figure 2 , Figure 3 , Figure 8 and Fig.10 As shown, after the filter element 100 is separated from the socket 50, the water sealing structure 60 can block the water inlet 121, so that the liquid remaining in the filter element 100 cannot flow out from the water inlet 121 due to the blocking effect of the water sealing structure 60, thereby effectively avoiding the leakage of the residual liquid in the filter element 100, improving the user experience, and reducing safety hazards and the user's workload.

[0078] In addition, if Figure 3 , Figure 4 , Fig.10 , Fig.11 , Fig.14 , Fig.24 and Fig. 27 As shown, the filter element 100 and the socket 50 are rotatably engaged, so that the filter element 100 is connected and fixed by connecting with the socket 50, and the installation and disassembly of the filter element 100 and the socket 50 are more convenient, which improves the assembly efficiency and provides users with a better usage experience.

[0079] It can be understood that the socket 50 is used to be detachably connected to the filter element 100, and the socket 50 is used to install the filter element 100. For example, the socket 50 can be arranged on a water-using device such as a water heater 300, and the filter element 100 can be connected to the water heater 300 through the socket 50 to filter the water flowing into the water heater 300 or the water flowing out of the water heater 300.

[0080] In some embodiments, Figure 3 , Figure 4 , Fig.10 and Fig.11 As shown, there is a second sealing ring 72 between the outer circumferential wall of the filter element 100 and the inner circumferential wall of the socket 50. The second sealing ring 72 can prevent the liquid entering from the inlet 51 from flowing out through the connection between the filter element 100 and the socket 50 to cause water leakage and other problems, thereby improving the sealing of the connection and improving the user experience.

[0081] In some embodiments, Figure 3 , Figure 4 , Fig.10 and Fig.11 As shown, the filter element 100 has an annular groove 14 on its peripheral wall, and the annular groove 14 extends along the circumferential direction of the filter element 100. The second sealing ring 72 is arranged in the annular groove 14. The annular groove 14 allows the second sealing ring 72 to be securely fixed on the filter element 100, avoiding relative movement of the second sealing ring 72 on the filter element 100, thereby ensuring secure fixation.

[0082] According to the filter element assembly 200 of the embodiment of the present invention, a water outlet channel 23 connected to the water outlet 122 is formed in the filter box 20, and the outer peripheral wall of the filter box 20 and the housing 10 jointly define a water inlet channel 13, and the water inlet channel 13 is connected to the water inlet 121. After the filter element 100 and the socket 50 are assembled, the water sealing structure 60 opens the water inlet 121 of the filter element 100, and the water inlet 121 is connected to the inlet 51 of the socket 50, and the water outlet 122 is connected to the outlet 52 of the socket 50, so that the filter element 100 It can filter the liquid to ensure the safety and hygiene of the water quality, and the flow rate of the liquid entering the filter box 20 is larger, and the flow of the liquid is smoother, ensuring a good filtering effect on the liquid; after the filter element 100 is separated from the socket 50, the water sealing structure 60 blocks the water inlet 121, so that the liquid remaining in the filter element 100 cannot flow out from the water inlet 121 under the blocking effect of the water sealing structure 60, effectively avoiding the leakage of the residual liquid in the filter element 100, thereby improving the user experience and reducing safety hazards and the user's labor.

[0083] In some embodiments of the present invention, Figure 1-Figure 4 , Figure 7-Figure 11 As shown, the water sealing structure 60 includes a water stop pad 30 and an elastic member 40, which are arranged in the housing 10. The housing 10 can protect the water stop pad 30 and the elastic member 40 to prevent the water stop pad 30 and the elastic member 40 from being exposed and damaged. For example, the elastic member 40 can be a spring, which is light in weight and low in cost, and can reduce the production cost and weight of the filter element 100.

[0084] In addition, if Figure 1-Figure 4 , Figure 7-Figure 11 As shown, the water stop pad 30 is located between the filter box 20 and the water inlet 121, and the elastic member 40 is located between the filter box 20 and the water stop pad 30. The elastic force generated by the elastic member 40 due to its own deformation will act on the water stop pad 30, so that the elastic member 40 can drive the water stop pad 30 toward the direction close to the water inlet 121 (for example Figure 3 121, and the water stop pad 30 can be pressed tightly by the elastic action of the elastic member 40 to ensure the sealing of the filter element 100 and effectively prevent the residual liquid in the filter element 100 from leaking. At the same time, the water sealing structure 60 has a simple structure, and the sealing operation of the water inlet 121 is simple, which is conducive to reducing the production cost of the filter element 100.

[0085] It should be noted that, for the convenience of description, the directions such as “upper” and “lower” in the present invention are based on the directions shown in the accompanying drawings, and are not limitations on the directions in actual application.

[0086] According to some embodiments of the present invention, Figure 7-Figure 13 As shown, the water stop pad 30 is provided with a push rod 32, and the push rod 32 is arranged along the axial direction of the housing 10 (for example Fig.10 The top rod 32 extends in the up-down direction shown in FIG. 2 , and the end of the top rod 32 facing away from the filter box 20 (eg Fig.10 ) exceeds the water stop pad 30, and the push rod 32 passes through the housing 10 through the positioning hole 126 on the housing 10. Therefore, after the filter element 100 and the socket 50 are assembled, the socket 50 rotates relative to the housing 10 and moves toward the filter element 100. In the process of moving toward the filter element 100, the socket 50 pushes the push rod 32 to move toward the filter element 100, so that the push rod 32 drives the water stop pad 30 to be separated from the water inlet 121 to open the water inlet 121, and realizes the connection between the water inlet 121 and the import 51. The water sealing structure 60 opens the water inlet 121 conveniently and has a simple structure, which is conducive to reducing production costs. In addition, the push rod 32 passes through the housing 10 through the positioning hole 126, and the movement of the push rod 32 can be guided by the positioning hole 126 to avoid the displacement of the movement of the push rod 32, thereby ensuring that the push rod 32 drives the water stop pad 30 to move reliably. For example, the flow path of the liquid can be as follows Fig.11 Indicated by the arrow.

[0087] In some embodiments, the cross-sectional shape and size of the positioning hole 126 are the same as the cross-sectional shape and size of the top rod 32, so as to avoid the situation where the positioning hole 126 is too large and the sealing is unreliable and leaking, and the sealing performance is better. The radial movement of the top rod 32 relative to the positioning hole 126 can be reduced, so that the movement of the top rod 32 is smoother.

[0088] In some embodiments, Figure 7As shown, the push rod 32 is detachably connected to the water stop pad 30, which facilitates the removal of the push rod 32, making replacement and maintenance more convenient, and can reduce the overall processing complexity of the filter element 100, facilitating the processing and manufacturing of the filter element 100.

[0089] In some embodiments, Fig.12 As shown, there can be multiple push rods 32, and the multiple push rods 32 are arranged at intervals along the circumferential direction of the water stop pad 30. There are multiple positioning holes 126 that correspond one to one with the push rods 32. By cooperating with the positioning holes 126 at multiple push rods 32 in different positions, the multiple push rods 32 can apply force to the water stop pad 30 more evenly, which facilitates the water stop pad 30 to open the water inlet 121 and ensures reliable driving of the water stop pad 30.

[0090] In the embodiment of the present invention, the number of the top rods 32 can be flexibly set according to actual conditions. For example, the top rods 32 can be as follows: Fig.12 Three are shown, but two, four, five, six or more may also be provided, all of which are within the protection scope of the present invention.

[0091] In some embodiments of the present invention, Figure 1-Figure 6 As shown, the side of the seat 50 facing the filter element 100 (eg Figure 3 The lower side shown in FIG. 1 is provided with a push rod 32, which extends toward the filter element 100. The end of the push rod 32 that is away from the receiving seat 50 (eg Figure 3 ) extends into the housing 10 through the inlet 51. Thus, after the filter element 100 and the socket 50 are assembled, the socket 50 rotates relative to the housing 10 and moves toward the filter element 100. In the process of the socket 50 moving toward the filter element 100, the push rod 32 moves toward the filter element 100, so that the push rod 32 drives the water stop pad 30 to be spaced apart from the water inlet 121 to open the water inlet 121, thereby achieving the connection between the water inlet 121 and the inlet 51. The water sealing structure 60 is convenient for opening the water inlet 121, and has a simple structure, which is conducive to reducing production costs. For example, the flow path of the liquid can be as follows Figure 4 Indicated by the arrow.

[0092] In some embodiments, Figure 6 As shown, there can be multiple push rods 32, and the multiple push rods 32 are arranged at intervals along the circumferential direction of the seat 50. The push rods 32 at multiple different positions extend into the shell 10 through the inlet 51, so that the multiple push rods 32 can apply force to the water stop pad 30 more evenly, which facilitates the water stop pad 30 to open the water inlet 121 and ensures reliable driving of the water stop pad 30.

[0093] According to some embodiments of the present invention, Figure 1-Figure 14As shown, there are multiple water inlets 121, and the multiple water inlets 121 are spaced apart along the circumferential direction of the shell 10, and the water outlet 122 is arranged at the center of the shell 10, which can avoid interference between the water inlet 121 and the water outlet 122, ensure smooth flow of liquid, and increase the amount of liquid entering the filter element 100 through multiple water inlets 121, ensure smooth flow of liquid, help improve the filtration speed of the filter element 100, meet the user's demand for liquid usage, and improve the user's experience. In addition, the water stop pad 30 is a ring extending along the circumferential direction of the shell 10, so that the water stop pad 30 can block and open multiple water inlets 121 at the same time, ensure that the blocking and opening of the water inlet 121 is more reliable, and facilitate the processing and manufacturing of the water stop pad 30.

[0094] In some embodiments, the housing 10 is provided with a positioning hole 126, such as Fig.12 As shown, a positioning hole 126 is provided between two adjacent water inlets 121. By cooperating with multiple push rods 32 and the positioning holes 126, the multiple push rods 32 can apply force to the water stop pad 30 more evenly, making it easier for the water stop pad 30 to open the water inlet 121 and ensuring reliable driving of the water stop pad 30.

[0095] In some embodiments of the present invention, the water stop pad 30 can be a silicone rubber part, an EPDM rubber part, a NBR rubber part or a fluororubber part, so that the water stop pad 30 has a certain elasticity, ensuring that the water stop pad 30 is reliably sealed to the water inlet 121, ensuring the stability of the cooperation between the water stop pad 30 and the elastic part 40, and facilitating the processing and manufacturing of the water stop pad 30, which is conducive to reducing production costs.

[0096] In some embodiments, Figure 15-18 As shown, the side of the filter box 20 facing the water stop pad 30 (eg Figure 3 The upper side shown in FIG. 2 is provided with a positioning protrusion 211, and the positioning protrusion 211 may be multiple, and the multiple positioning protrusions 211 are arranged at intervals along the circumferential direction of the filter box 20, or the positioning protrusion 211 may extend in a ring shape along the circumferential direction of the filter box 20, and the end of the elastic member 40 away from the water stop pad 30 (for example Figure 3 The upper end shown in the figure is located in the space defined by the positioning protrusion 211. The positioning protrusion 211 can limit the elastic member 40 to prevent the elastic member 40 from moving in the radial direction, thereby improving the structural stability and ensuring the reliability of the water stop pad 30 in blocking the water inlet 121.

[0097] In the embodiment of the present invention, the number of the positioning protrusions 211 can be flexibly set according to actual conditions. For example, the positioning protrusions 211 can be as follows: Fig.17 Four are shown, but there may be two, three, five, six or more, all of which are within the protection scope of the present invention.

[0098] In some embodiments of the present invention, Fig.31 As shown, the end of the elastic member 40 that is away from the water inlet 121 (eg Fig.31 The lower end of the housing 10 is provided with a first positioning section 41. Along the axial direction of the housing 10, the shape and size of the outer contour of the first positioning section 41 remain unchanged. The first positioning section 41 is located in the space defined by the positioning protrusion 211. The outer contour of the first positioning section 41 fits with the inner wall of the positioning protrusion 211, which can increase the contact area between the elastic member 40 and the positioning protrusion 211, enhance the limiting effect of the positioning protrusion 211 on the elastic member 40, and improve the structural stability.

[0099] In some embodiments, Fig.16 and Fig.31 As shown, along the axial direction of the shell 10, the height of the first positioning section 41 is H1, the height of the positioning protrusion 211 is H2, and they satisfy: H2>H1. Thus, a sufficient blocking height can be ensured to prevent the first positioning section 41 from escaping from the space defined by the positioning protrusion 211, further ensuring the reliability of the cooperation between the elastic member 40 and the positioning protrusion 211, thereby ensuring the stability of the water stop pad 30 in blocking the water inlet 121.

[0100] In some embodiments, Figure 15-18 As shown, the end surface of the filter box 20 facing the water stop pad 30 (eg Figure 3 The filter box 20 further includes a support rib 212 on its upper end surface (as shown in the figure). The support rib 212 is located in the space defined by the positioning protrusion 211, and the support ribs 212 are multiple and spaced apart in the circumferential direction of the filter box 20. Each support rib 212 extends in the radial direction of the filter box 20. The setting of the support rib 212 can support the elastic member 40 and ensure the reliability of the elastic member 40.

[0101] In the embodiment of the present invention, the number of the support ribs 212 can be flexibly set according to actual conditions. For example, the support ribs 212 can be as follows: Fig.17 Eight are shown, but two, three, five, six, seven, nine or more may also be provided, all of which are within the scope of protection of the present invention.

[0102] In some embodiments, Fig.16 and Fig.31 As shown, the height of the support rib 212 is H5 and satisfies: H2-H5>H1. Therefore, the support rib 212 can support the elastic member 40 while ensuring sufficient blocking height to prevent the first positioning section 41 from escaping from the space defined by the positioning protrusion 211 and the support rib 212, thereby ensuring that the elastic member 40 is reliably fixed and ensuring the stability of the water stop pad 30 in blocking the water inlet 121.

[0103] In some embodiments, when the positioning protrusion 211 is annular and extends in the circumferential direction of the housing 10, one end of each support rib 212 located in the radially outer side abuts against the positioning protrusion 211; when the positioning protrusion 211 is a plurality of protrusions spaced apart in the circumferential direction of the housing 10, refer to the attached Fig.17 As shown, both ends of each positioning protrusion 211 along the circumferential direction of the filter box 20 are abutted against one end of two adjacent support ribs 212 located on the radial outside, which can enhance the structural strength of the positioning protrusion 211 and ensure the reliability of the positioning protrusion 211.

[0104] In some embodiments of the present invention, Fig. 9 As shown, the side of the water stop pad 30 facing the filter box 20 (for example Figure 3 The lower side shown in FIG. 3 has a positioning groove 31, which extends in a ring shape along the circumferential direction of the water stop pad 30. The end of the elastic member 40 away from the filter box 20 (for example Figure 3 The upper end shown in the figure is located in the positioning groove 31. The setting of the positioning groove 31 can limit the end of the elastic member 40 away from the filter box 20, thereby preventing the elastic member 40 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 30 in blocking the water inlet 121.

[0105] In some embodiments, Fig.31 As shown, the end of the elastic member 40 away from the filter box 20 (eg Fig.31 The upper end shown in the figure has a second positioning section 42. Along the axial direction of the shell 10, the shape and size of the outer contour of the second positioning section 42 remain unchanged. The second positioning section 42 is located in the positioning groove 31. The outer contour of the second positioning section 42 fits with the inner wall of the positioning groove 31, which can increase the contact area between the elastic member 40 and the positioning groove 31, enhance the limiting effect of the positioning groove 31 on the elastic member 40, and improve the structural stability.

[0106] In some embodiments, Fig. 9 and Fig.31 As shown, along the axial direction of the shell 10, the height of the second positioning section 42 is H3, the depth of the positioning groove 31 is H4, and it satisfies: H4>H3. Therefore, the limiting groove can ensure sufficient blocking depth to prevent the second positioning section 42 from escaping from the positioning groove 31, further ensuring the reliability of the cooperation between the elastic member 40 and the positioning groove 31, thereby ensuring the stability of the water stop pad 30 in blocking the water inlet 121.

[0107] In some embodiments, along the axial direction of the housing 10 (eg Figure 3), at least one of the two end faces of the elastic member 40 is a plane, which can increase the contact area between the elastic member 40 and the water stop pad 30 and / or the filter box 20, and further avoid radial deviation of the elastic member 40, thereby ensuring that the water stop pad 30 does not produce radial movement and ensuring the reliability of the water stop pad 30 in blocking the water inlet 121.

[0108] It is understandable that the elastic member 40 is close to the end of the filter box 20 (for example Figure 3 The lower end shown in the figure) can be a flat surface, which can increase the contact area between the elastic member 40 and the support rib 212 and further prevent the elastic member 40 from radially deviating; or, the end of the elastic member 40 away from the filter box 20 (for example Figure 3 The upper end shown in FIG) may be a plane, which can increase the contact area between the elastic member 40 and the positioning groove 31, and further prevent the elastic member 40 from radially deviating; or the axial direction of the elastic member 40 (for example Figure 3 Both ends of the upper and lower directions (as shown in FIG) are planes, which can increase the contact area between the elastic member 40 and the support rib 212 and the positioning groove 31, and further prevent the elastic member 40 from radially deviating.

[0109] In some embodiments of the present invention, Figure 1-Figure 4 , Figure 7-Figure 11 As shown, the outer contour dimension of the elastic member 40 near the filter box 20 is larger than the outer contour dimension of the elastic member 40 near the water stop pad 30, which can improve the stability of the elastic member 40 and avoid the axis of the elastic member 40 near the filter box 20 being inconsistent with the axis of the elastic member 40 near the water stop pad 30.

[0110] According to some embodiments of the present invention, Figure 1-Figure 4 , Figure 7 , Figure 8 , Fig.10 , Fig.11 and Fig.19 As shown, the end of the housing 10 away from the water inlet 121 (eg Figure 3 The inner peripheral wall of the housing 10 (the lower end shown in FIG. 1 ) is provided with a fixing rib 111, and there are a plurality of fixing ribs 111, and the plurality of fixing ribs 111 are spaced apart along the circumferential direction of the housing 10. The filter material box 20 is located in a space defined by the plurality of fixing ribs 111, and the end of the filter material box 20 away from the water inlet 121 (for example Figure 3 The filter box 20 is positioned in the circumferential direction of the housing 10 (the lower end shown in the figure) to ensure that the filter box 20 is reliably limited in the housing 10, avoid shaking of the filter box 20 in the housing 10, and ensure a good filtering effect on the liquid.

[0111] In the embodiment of the present invention, the number of the fixing ribs 111 can be flexibly set according to actual conditions. For example, the fixing ribs 111 can be Fig.19 As shown, there are six fixing ribs 111, which are evenly spaced in the circumferential direction of the shell 10, and can play a positioning role at six locations in the circumferential direction of the filter box 20 to prevent the filter box 20 from moving in the shell 10. The number of the fixing ribs 111 can also be two, three, four, five, seven or more, which are all within the protection scope of the present invention.

[0112] In some embodiments of the present invention, Figure 1-Figure 4 , Figure 7 , Figure 8 , Fig.10 , Fig.11 , Figure 15-18 As shown, the filter box 20 includes a filter box upper cover 21 and a filter box lower shell 22. The side of the filter box upper cover 21 facing away from the water inlet 121 (for example Figure 3 The lower side of the filter box 21 is provided with an annular filter screen 213, which extends in the circumferential direction of the filter box upper cover 21. The outer peripheral wall of the filter box upper cover 21 and the housing 10 jointly define the water inlet channel 13. The filter box lower shell 22 is used to accommodate filter material, and the filter box lower shell 22 defines a water outlet channel 23. One end of the filter box lower shell 22 close to the water inlet 121 (for example Figure 3 The upper end (as shown in the figure) extends into the filter box upper cover 21, so that the filter box upper cover 21 can limit the filter box lower shell 22, and the annular filter screen 213 can block the filter material to prevent the filter material from flowing out of the filter box lower shell 22 and affecting the filtering effect of the filter element 100, thereby ensuring that the filtering effect of the filter element 100 is good.

[0113] The liquid in the water inlet channel 13 can flow to the water outlet channel 23 through the annular filter mesh 213, and the liquid is filtered by the filter material to achieve filtration of the liquid, ensuring the safety and hygiene of the water quality. The impurities in the liquid (such as mud and suspended matter, etc.) can be filtered through the annular filter mesh 213 to achieve multiple filtration of the liquid.

[0114] In addition, if Figure 1-Figure 4 , Figure 7 , Figure 8 , Fig.10 , Fig.11 , Figure 15-18 As shown, the filter box upper cover 21 is provided with a connecting port 214, and the connecting port 214 is used to connect the water outlet channel 23 and the water outlet 122, so that the liquid in the water outlet channel 23 can flow out from the water outlet 122 through the connecting port 214, and the filter box lower shell 22 is provided with a water through hole 222 on the peripheral wall, and the water through hole 222 is used to connect the water inlet channel 13 and the water outlet channel 23, so that the liquid in the water inlet channel 13 can enter the water outlet channel 23 through the water through hole 222, thereby avoiding the filter box lower shell 22 from blocking the liquid and ensuring smooth flow of the liquid.

[0115] In some examples, the filter material may be a resin filter material, an adsorption filter material or an anti-scaling filter material to ensure the filtering effect on the liquid and meet the user's filtering needs for the liquid. For example, the adsorption filter material may be PP cotton, activated carbon, etc.

[0116] In some embodiments, the scale-inhibiting filter material can filter the liquid through template-assisted crystallization salt-free scale-inhibiting technology (Template Assisted Crystallization, TAC), or filter the liquid through the activated sludge process (ASP) process, or filter the liquid through salt-free scale inhibition (MMSAP). It can ensure good filtration effect on the liquid by adsorbing and replacing the form of anions and cations in the liquid or preventing the anions and cations in the liquid from agglomerating, and has a long service life.

[0117] In some embodiments, the filter material is formed into a sheet-like shape, a granular shape, or a cotton-like shape, which can reduce the interception effect of the filter material on the flow of the liquid, ensure smooth flow of the liquid, and ensure a good filtering effect.

[0118] In some embodiments, the number of holes in the annular filter 213 may be 30-100 meshes, so that the annular filter 213 can filter most of the impurities in the liquid, and can ensure that the filter material cannot flow out through the annular filter 213, ensuring reliable blocking of the filter material. For example, in some specific embodiments, the number of holes in the annular filter 213 may be 30 meshes, 40 meshes, 50 meshes, 60 meshes, 70 meshes, 80 meshes, 90 meshes, 100 meshes, etc.

[0119] In some embodiments, Fig.18 As shown, there are multiple (or more than or equal to two) water openings 222, and the multiple water openings 222 are arranged at intervals along the circumferential direction of the filter box lower shell 22; or the multiple water openings 222 are arranged along the length direction of the filter box lower shell 22 (for example Figure 3 Alternatively, a plurality of water openings 222 are spaced apart along the circumferential direction of the filter box lower shell 22, and a plurality of water openings 222 are spaced apart along the length direction of the filter box lower shell 22. The plurality of water openings 222 can increase the amount of liquid entering the water outlet channel 23, thereby ensuring smooth liquid flow, which is beneficial to improving the filtration efficiency and meeting the user's usage needs.

[0120] In some embodiments, Figure 2-Figure 4 , Figure 8 , Fig.10 and Fig.11As shown, a sixth sealing ring 76 is provided between the inner peripheral wall of the filter box upper cover 21 and the outer peripheral wall of the filter box lower shell 22. The sixth sealing ring 76 can ensure that the filter box upper cover 21 and the filter box lower shell 22 are reliably connected, improve the sealing of the connection, and prevent the filter material from leaking.

[0121] In some embodiments, Figure 2-Figure 4 , Figure 8 , Fig.10 and Fig.11 As shown, an annular groove 14 is provided on the peripheral wall of the upper end of the filter box lower shell 22, and the annular groove 14 extends along the circumferential direction of the filter box lower shell 22. The sixth sealing ring 76 is arranged in the annular groove 14. The annular groove 14 makes the sixth sealing ring 76 securely fixed on the filter box lower shell 22, avoiding relative movement of the sixth sealing ring 76 on the filter box lower shell 22, thereby ensuring secure fixation.

[0122] According to some embodiments of the present invention, Fig.17 and Fig.18 As shown, the outer peripheral wall of the filter box lower shell 22 has a limiting rib 221, and the limiting rib 221 extends along the circumferential direction of the filter box lower shell 22. Figure 3 The lower end shown in FIG. 1 is supported on the limiting rib 221, and the limiting rib 221 can prevent the filter box upper cover 21 from moving toward the side away from the water inlet 121 (for example, Figure 3 The lower side shown in the figure) can be moved to limit the relative position of the filter box upper cover 21 and the filter box lower shell 22, which is beneficial to improve the assembly stability of the filter box lower shell 22 and the filter box upper cover 21, and can prevent the filter material from flowing out from the gap between the filter box lower shell 22 and the filter box upper cover 21, thereby ensuring that the filtering effect of the filter element 100 is reliable.

[0123] In some embodiments, Figure 1-Figure 4 , Figure 7-Figure 11 As shown, the housing 10 includes a filter element lower shell 11 and a filter element upper cover 12, at least part of the filter material box 20 is located in the filter element lower shell 11, the filter element upper cover 12 is connected to the filter element lower shell 11, the water inlet 121 and the water outlet 122 are both arranged on the filter element upper cover 12, the structure of the housing 10 is simple, and the production and processing of the filter element 100 is convenient.

[0124] In some embodiments, Figure 3 , Figure 4 , Fig.10 and Fig.11As shown, the filter element lower shell 11 and the filter element upper cover 12 are threadedly connected or welded, and the reliability of the connection between the filter element lower shell 11 and the filter element upper cover 12 is ensured by a simple connection method, and the axis of the filter element lower shell 11 and the filter element upper cover 12 coincides, and the water inlet 121 is ensured to be opposite to the water inlet channel 13, and the water outlet 122 is opposite to the water outlet channel 23. In addition, the production, processing and assembly of the filter element 100 are facilitated, and the assembly difficulty of the filter element 100 can be reduced, and the assembly efficiency of the filter element 100 can be improved. Optionally, the welding connection can be welded by ultrasonic welding or spinning welding.

[0125] In some embodiments, Figure 2-Figure 4 , Figure 8 , Fig.10 and Fig.11 As shown, there is a third sealing ring 73 between the filter element lower shell 11 and the filter element upper cover 12. The third sealing ring 73 can prevent liquid from flowing out from the connection between the filter element lower shell 11 and the filter element upper cover 12 to cause leakage and other problems, and can improve the sealing of the filter element 100, thereby improving the user experience.

[0126] In some embodiments of the present invention, Figure 1-Figure 4 , Figure 7-Figure 11 As shown, one end of the shell 10 having the water outlet 122 has an inwardly extending extension piece 123, and the extension piece 123 has a connecting channel 124, and the connecting channel 124 is connected with the connecting port 214 and the water outlet 122. The connecting channel 124 allows the liquid after filtering to flow from the water outlet channel 23 to the water outlet 122, and can separate the space from the water outlet channel 23 to the water outlet 122 from the space from the water inlet 121 to the water inlet channel 13, so as to avoid mixing of the filtered liquid with the liquid before filtration, thereby ensuring the filtering effect of the filter element 100.

[0127] According to some embodiments of the present invention, one end of the filter box upper cover 21 facing the water inlet 121 (for example Figure 3 The upper end of the filter box 120 (as shown in the figure) has a protrusion 215, the communication port 214 passes through the protrusion 215, and one end of the extension member 123 is sleeved outside the protrusion 215. The extension member 123 can be limited by the protrusion 215, ensuring that the housing 10 can limit the filter box upper cover 21 reliably, and can reduce the problem of liquid cross-contamination in the water inlet channel 13 and the water outlet channel 23, thereby ensuring reliable liquid filtration.

[0128] In some embodiments, Figure 2-Figure 4 , Figure 8 , Fig.10 and Fig.11As shown, a fifth sealing ring 75 is provided between the inner peripheral wall of the extension piece 123 and the outer peripheral wall of the protrusion 215. The fifth sealing ring 75 can separate the space from the water outlet channel 23 to the water outlet 122 from the space from the water inlet 121 to the water inlet channel 13, thereby avoiding mixing of the filtered liquid with the liquid before filtration and ensuring the filtering effect of the filter element 100.

[0129] In some embodiments, Figure 2-Figure 4 , Figure 8 , Fig.10 and Fig.11 As shown, an annular groove 14 is provided on the peripheral wall of the protrusion 215, and the annular groove 14 extends along the circumferential direction of the protrusion 215. The fifth sealing ring 75 is arranged in the annular groove 14. The annular groove 14 enables the fifth sealing ring 75 to be reliably fixed on the protrusion 215, avoiding relative movement of the fifth sealing ring 75 on the protrusion 215, thereby ensuring reliable fixation.

[0130] In some embodiments, Figure 2-Figure 4 , Figure 8-Figure 11 As shown, a first sealing ring 71 is provided between the outer peripheral wall of the extension portion near the water outlet 122 and the inner peripheral wall of the receiving seat 50. The first sealing ring 71 can prevent liquid from flowing through the gap between the outer peripheral wall of the extension portion near the water outlet 122 and the inner peripheral wall of the receiving seat 50, thereby avoiding mixing of the filtered liquid with the liquid before filtration, and preventing the liquid from flowing directly from the inlet 51 to the outlet 52 without being filtered by the filter element 100, thereby ensuring the filtering effect of the filter element 100.

[0131] In some embodiments, Figure 2-Figure 4 , Figure 8-Figure 11 As shown, an annular groove 14 is provided on the peripheral wall of the extension portion, and the annular groove 14 extends along the circumferential direction of the extension portion. The first sealing ring 71 is arranged in the annular groove 14. The annular groove 14 enables the first sealing ring 71 to be reliably fixed on the extension portion, avoiding relative movement of the first sealing ring 71 on the extension portion, thereby ensuring reliable fixation.

[0132] In some embodiments of the present invention, Figure 1-Figure 4 , Figure 7-Figure 11 As shown, a one-way valve 125 is provided between the water outlet channel 23 and the water outlet 122. The one-way valve 125 only allows liquid to flow from the water outlet channel 23 to the water outlet 122, thereby preventing the liquid from flowing back or flowing into the filter element 100 from the water outlet 122, thereby avoiding affecting the outflow of the filtered liquid and ensuring the filtering effect of the filter element 100.

[0133] In some embodiments, the one-way valve 125 is a device that cannot pass water in the reverse direction and requires a certain water inlet pressure to open in the forward direction. Therefore, after the filter element 100 is disassembled, the one-way valve 125 can prevent the residual liquid in the filter element 100 from flowing out through the water outlet 122, thereby avoiding problems such as liquid leakage and improving the user experience.

[0134] For example, the forward water inlet pressure of the one-way valve 125 is greater than the pressure of the water pressure acting on the water inlet of the one-way valve 125 after the filter element 100 is filled with water + 0.05Mpa (relative pressure). The former is the pressure to overcome the weight of the water stored in the filter element 100 acting on the one-way valve 125, and 0.05Mpa is the pressure to overcome the atmospheric pressure. After the filter element 100 is disassembled, the liquid in the valve core is effectively prevented from flowing out through the water inlet 121.

[0135] In some embodiments, the housing 10 has an end with a water outlet 122 having an inwardly extending extension member 123, such as Figure 2-Figure 4 , Figure 7-Figure 11 As shown, the one-way valve 125 can be located in the communication channel, which is convenient for limiting the one-way valve 125 and ensuring that the one-way valve 125 is fixed reliably.

[0136] In some embodiments, Figure 2-Figure 4 , Figure 7-Figure 11 As shown, there is a fourth sealing ring 74 between the outer peripheral wall of the one-way valve 125 and the inner peripheral wall of the connecting channel 124. The fourth sealing ring 74 can prevent liquid from flowing between the outer peripheral wall of the one-way valve 125 and the inner peripheral wall of the connecting channel 124. When the filter element 100 is disassembled, it is prevented that the liquid directly flows out through the gap between the one-way valve 125 and the filter box cover 21 to cause leakage and other problems, effectively preventing the leakage of residual liquid in the filter element 100, thereby improving the user experience.

[0137] In some embodiments, Figure 2-Figure 4 , Figure 7-Figure 11 As shown, an annular groove 14 is provided on the peripheral wall of the one-way valve 125, and the annular groove 14 extends along the circumferential direction of the one-way valve 125. The fourth sealing ring 74 is arranged in the annular groove 14. The annular groove 14 enables the fourth sealing ring 74 to be reliably fixed on the one-way valve 125, avoiding relative movement of the fourth sealing ring 74 on the one-way valve 125, thereby ensuring reliable fixation.

[0138] According to some embodiments of the present invention, Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, the inner peripheral wall of the socket 50 is provided with a slide rail 53, the slide rail 53 protrudes from the inner peripheral wall of the socket 50, and the slide rail 53 is spaced apart from the inner bottom wall of the socket 50 to define a receiving space 54. The outer peripheral wall of the shell 10 is provided with a slide rib 127, the slide rib 127 protrudes from the outer peripheral wall of the shell 10, and along the rotation direction when the socket 50 is installed, the surface of the slide rib 127 away from the inner bottom wall of the socket 50 (for example Figure 3 ) toward a direction away from the inner bottom wall of the receiving seat 50 (e.g. Figure 3 ) tilted downward as shown in FIG.

[0139] During the installation of the socket 50 and the shell 10, the socket 50 and the shell 10 are aligned, that is, one end of the sliding bar 127 is aligned with the opening of the accommodating space 54, and then the socket 50 is rotated. During the rotation of the socket 50, the sliding bar 127 gradually enters the accommodating space 54, and along the rotation direction of the socket 50 during installation, since the surface of the sliding bar 127 facing away from the inner bottom wall of the socket 50 is inclined toward the direction away from the inner bottom wall of the socket 50, during the rotation of the socket 50 relative to the shell 10, the socket 50 gradually moves toward the filter element 100, so that the sliding bar 127 can be located in the accommodating space 54, and the sliding bar 127 can be limited by the slide rail 53, thereby realizing the rotational snap-fit ​​cooperation between the filter element 100 and the socket 50, ensuring that the filter element 100 and the socket 50 are reliably connected and easy to disassemble, thereby improving the assembly portability and assembly efficiency of the socket 50 and the shell 10.

[0140] In some embodiments of the present invention, Figure 22-Figure 28 As shown, a valve assembly 80 is provided in the socket 50, and the valve assembly 80 has a conducting state and a shutoff state. After the filter element 100 and the socket 50 are assembled, the valve assembly 80 is in the conducting state, the water inlet 121 is connected with the inlet 51, and the water outlet 122 is connected with the outlet 52, so that the liquid can enter the filter element 100 through the inlet 51 and the water inlet 121, and flow out through the water outlet 122 and the outlet 52, so as to filter the liquid; after the filter element 100 is separated from the socket 50, the valve assembly 80 is in the conducting state. When the component 80 is in the cut-off state, the water inlet 121 is separated from the inlet 51, and the water outlet 122 is separated from the outlet 52, which can prevent the liquid from flowing out through the inlet 51 after the filter element 100 is separated from the socket 50 and causing water leakage and other problems. Therefore, the valve component 80 can control the connection between the socket 50 and the filter element 100, avoiding the need to disassemble the filter element 100 after the water is cut off, avoiding the complexity of the operation, making the filter element 100 more convenient to disassemble, and improving the user experience.

[0141] According to some embodiments of the present invention, Fig. 22 and Fig.25As shown, when the filter element 100 and the socket 50 are assembled, the filter element 100 contacts and cooperates with the valve assembly 80 to switch the valve assembly 80 from the cut-off state to the on state, making it easier to control the cut-off state and the on state of the valve assembly 80 without manual manipulation, thus avoiding complicated operations for users, simplifying the installation steps, and helping to improve the user experience.

[0142] In some embodiments of the present invention, Figure 22-Figure 28 As shown, in the on state, the inlet 51 is separated from the outlet 52, so that the liquid flowing in from the inlet 51 is filtered by the filter element 100 and then flows out from the outlet 52, thereby filtering the liquid and ensuring the safety and hygiene of the water quality; in the off state, the inlet 51 is connected to the outlet 52, so that the liquid flowing in from the inlet 51 can directly flow out from the outlet 52, meeting the normal use of the user and realizing different usage requirements.

[0143] In some embodiments, Figure 22-Figure 30 As shown, a first installation cavity 91, a second installation cavity 92 and a connecting cavity 93 are formed in the socket 50, and the first installation cavity 91 and the second installation cavity 92 are separated from each other. The valve assembly 80 includes a first stop valve 81 and a second stop valve 82. The first stop valve 81 is provided in the first installation cavity 91, and the first stop valve 81 is provided in the second installation cavity 92. The first stop valve 81 is conveniently placed through the first installation cavity 91, and the second stop valve 82 is conveniently placed through the second installation cavity 92, thereby ensuring that the first stop valve 81 and the first stop valve 81 are reliably placed.

[0144] In addition, if Fig. 22 , Fig.23 , Fig.25 , Fig.25 , Fig.29 and Fig.30 As shown, the first stop valve 81 includes a first valve seat 811 and a first valve core 812, a first communication channel 813 is formed in the first valve seat 811, the first communication channel 813 is communicated with the inlet 51, the first valve core 812 is arranged in the first communication channel 813, and the first valve core 812 is movable between a first position and a second position, the second stop valve 82 includes a second valve seat 821 and a second valve core 822, a second communication channel 823 is formed in the second valve seat 821, the second communication channel 823 is communicated with the outlet 52, the second valve core 822 is arranged in the second communication channel 823, and the second valve core 822 is movable between a third position and a fourth position, the first stop valve 81 and the second stop valve 82 have simple structures, are easy to process and manufacture, and are conducive to reducing production costs.

[0145] When the valve assembly 80 is in the conducting state, Fig. 22 and Fig.25As shown, the first valve core 812 is in the first position and the second valve core 822 is in the third position, the first communication channel 813 connects the inlet 51 with the water inlet 121, the second communication channel 823 connects the outlet 52 with the water outlet 122, and the first communication channel 813 and the second communication channel 823 are both isolated from the communication cavity 93, so that the liquid flowing in from the inlet 51 can enter the water inlet 121 through the first communication channel 813, so that the liquid can be filtered through the filter element 100 and flow out through the water outlet 122 and the outlet 52, so as to meet the filtering requirements of the liquid. For example, the flow path of the liquid can be as follows Fig. 22 or Fig.25 Indicated by the arrow.

[0146] When the valve assembly 80 is in the cut-off state, Fig.23 and Fig.26 As shown, the first valve core 812 is in the second position and the second valve core 822 is in the fourth position, the first communication channel 813 is isolated from the water inlet 121, the second communication channel 823 is isolated from the water outlet 122, and the first communication channel 813 and the second communication channel 823 are connected through the communication cavity 93, so that the liquid flowing in from the inlet 51 can pass through the first communication channel 813, the communication cavity 93 and the second communication channel 823 and flow out from the outlet 52, which can prevent the liquid from flowing out of the socket 50 from the inlet 51 or the outlet 52, avoid water leakage and other problems, and can meet different usage requirements and improve the user experience. For example, the flow path of the liquid can be as follows Fig.23 or Fig.26 Indicated by the arrow.

[0147] In some embodiments, Fig.29 and Fig.30 As shown, the first stop valve 81 also includes a first return spring 814, which is arranged between the first valve core 812 and the first valve seat 811, and is used to push the first valve core 812 to move downward, so that the first connecting channel 813 is isolated from the water inlet 121, and the first return spring 814 drives the first valve core 812 to move reliably, and the structure is simple, which is conducive to reducing production costs; the second stop valve 82 also includes a second return spring 824, which is arranged between the second valve core 822 and the second valve seat 821, and the second return spring 824 is used to push the second valve core 822 to move downward, so that the second connecting channel 823 is isolated from the water outlet 122, and the second return spring 824 drives the second valve core 822 to move reliably, and the structure is simple, which is conducive to reducing production costs.

[0148] In some embodiments, Fig.29 and Fig.30 As shown, one end of the first valve core 812 close to the water inlet 121 (eg Fig.29A seventh sealing ring 77 is provided between the outer circumferential wall of the first valve seat 811 and the inner circumferential wall of the first valve seat 811. When the first valve core 812 is in the second position, the seventh sealing ring 77 can ensure that the first connecting channel 813 is reliably separated from the water inlet 121, thereby preventing liquid from flowing out of the receiving seat 50, avoiding water leakage and other problems, and improving the user experience.

[0149] In some embodiments, Fig.29 and Fig.30 As shown, one end of the second valve core 822 close to the water outlet 122 (eg Fig.29 An eighth sealing ring 78 is provided between the outer circumferential wall of the second valve seat 821 and the inner circumferential wall of the second valve seat 821. When the second valve core 822 is in the fourth position, the eighth sealing ring 78 can ensure that the second connecting channel 823 is reliably separated from the water inlet 121, thereby preventing liquid from flowing out of the receiving seat 50, avoiding water leakage and other problems, and improving the user experience.

[0150] In the related art, the liquid flowing out of the water heater contains substances that irritate the skin (such as chloride ions, etc.), which causes symptoms such as skin itching after the user takes a bath, affecting the user's bathing comfort.

[0151] Therefore, the water heater 300 according to the embodiment of the present invention includes the filter element assembly 200 according to the embodiment of the present invention, and the filter element assembly 200 can filter the liquid, thereby improving the user's bathing comfort, avoiding the outflow of substances that irritate the skin from the water heater 300 and causing symptoms such as skin itching after bathing, and realizing the transformation from a simple water use scene to health fields such as skin moisturizing, skin soothing, and skin beautification, thereby improving the user's bathing comfort and use experience. At the same time, after the filter element 100 is disassembled, the water sealing structure 60 can block the water inlet 121, so that the liquid remaining in the filter element 100 cannot flow out from the water inlet 121 under the blocking effect of the water sealing structure 60, effectively avoiding the leakage of the liquid remaining in the filter element 100, and improving the user's use experience.

[0152] Since the filter element assembly 200 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the water heater 300 according to the embodiment of the present invention has a water outlet channel 23 connected to the water outlet 122 formed in the filter box 20, and the outer peripheral wall of the filter box 20 and the shell 10 jointly define a water inlet channel 13, and the water inlet channel 13 is connected to the water inlet 121. After the filter element 100 and the socket 50 are assembled, the water sealing structure 60 opens the water inlet 121 of the filter element 100, and the water inlet 121 is connected to the inlet 51 of the socket 50, and the water outlet 122 is connected to the socket 50. The outlet 52 is connected, so that the filter element 100 can filter the liquid, ensuring the safety and hygiene of the water quality, and the flow rate of the liquid entering the filter box 20 is larger, the flow of the liquid is smoother, and the filtering effect of the liquid is ensured to be good; after the filter element 100 is separated from the socket 50, the water sealing structure 60 blocks the water inlet 121, so that the liquid remaining in the filter element 100 cannot flow out from the water inlet 121 under the blocking effect of the water sealing structure 60, effectively avoiding the leakage of the residual liquid in the filter element 100, improving the user experience, and reducing safety hazards and the user's labor.

[0153] According to some embodiments of the present invention, Fig. 20 and Fig.21 As shown, the water heater 300 includes a shell 303 and a heat exchanger 304. The heat exchanger 304 is used to heat the liquid, and the heat exchanger 304 is arranged in the shell 303. The heat exchanger 304 can be protected by the shell 303 to avoid damage caused by exposure of the heat exchanger 304, thereby extending the service life of the water heater 300 and realizing the heating demand of the water heater 300 for the liquid.

[0154] In addition, if Fig. 20 and Fig.21 As shown, the heat exchanger 304 has an exchange inlet 301 and an exchange outlet 302. The exchange inlet 301 is connected to the outlet 52. The liquid can enter the heat exchanger 304 after passing through the filter component, so that the filter component can filter the incoming liquid to prevent impurities in the liquid from damaging the heat exchanger 304, which is beneficial to extending the service life of the heat exchanger 304. In addition, filtering the liquid by the filter component can ensure the safety and hygiene of the water quality, avoid the outflow of substances that irritate the skin from the water heater 300 and cause symptoms such as skin itching after bathing, thereby improving the user's bathing comfort and usage experience.

[0155] In some embodiments, Fig. 20 As shown, the filter element assembly 200 can be located in the housing 303 , and the housing 303 can protect the filter element assembly 200 to prevent the filter element assembly 200 from being exposed and damaged, which is beneficial to extending the service life of the filter element assembly 200 .

[0156] In some embodiments, Fig.21As shown, the filter element assembly 200 can be located outside the housing 303, so that the user can disassemble the filter element 100, making it more convenient to replace or maintain the filter element 100, thereby improving the user experience.

[0157] In some embodiments, the water heater 300 also includes a mixing valve, which is connected to the exchange outlet 302. The mixing valve can mix the liquid flowing out of the heat exchanger 304 with the unheated liquid, so that the liquid flowing out of the mixing valve can meet the required liquid temperature requirements and meet the user's requirements for different liquid temperatures.

[0158] In some embodiments, the liquid entering the water heater 300 can enter the filter element assembly 200 through the inlet 51 and flow out through the outlet 52. A portion of the liquid flowing out of the outlet 52 can enter the heat exchanger 304 through the exchange inlet 301, and another portion of the liquid flowing out of the outlet 52 can enter the mixing valve and mix with the liquid flowing out of the heat exchanger 304 to obtain the required liquid temperature, so that the liquid flowing out of the water heater 300 is filtered through the filter assembly, ensuring the safety and hygiene of the water quality and improving the user's bathing comfort and use experience.

[0159] In some embodiments, a portion of the liquid entering the water heater 300 can enter the filter element assembly 200 through the inlet 51, and flow into the water heater 300 through the outlet 52 and the exchange inlet 301, and another portion of the liquid entering the water heater 300 can enter the mixing valve and mix with the liquid flowing out of the heat exchanger 304 to obtain the required liquid temperature. The liquid entering the water heater 300 can be filtered, which is beneficial to extend the service life of the water heater 300, ensure the safety and hygiene of the water quality, and improve the user's bathing comfort and use experience.

[0160] The water heater 300 according to a specific embodiment of the present invention is described in detail below with reference to the accompanying drawings. It should be understood that the following description is only exemplary and should not be construed as limiting the present invention.

[0161] See also Fig. 20As shown, the water heater 300 includes a housing 303, a heat exchanger 304 and a filter element assembly 200. The heat exchanger 304 is used to heat the liquid. The heat exchanger 304 is arranged in the housing 303, and the heat exchanger 304 has an exchange inlet 301 and an exchange outlet 302. The filter element assembly 200 includes a socket 50 and a filter element 100. The socket 50 has an inlet 51 and an outlet 52. The exchange inlet 301 is connected to the inlet 51. The filter element 100 includes a housing 10, a filter material box 20 and a water sealing structure 60. The housing 10 has a water inlet 121 and a water outlet 122. The water inlet 121 is three water inlets spaced apart along the circumferential direction of the housing 10. The water outlet 122 is arranged at the center of the housing 10. The filter material box 20 and the water sealing structure 60 It is arranged in the shell body 10, and the upper end of the shell body 10 has an inwardly extending extension piece 123, and the extension piece 123 has a connecting channel 124, and the connecting channel 124 is connected with the connecting port 214 and the water outlet 122. The one-way valve 125 is located in the connecting channel 124, and the lower end of the shell body 10 has a fixing rib 111, and the fixing rib 111 is six spaced apart along the circumferential direction of the shell body 10, and the filter box 20 is located in the space defined by the six fixing ribs 111.

[0162] Among them, Figure 1-Figure 11 , Figure 15-18 As shown, the filter box 20 includes a filter box upper cover 21 and a filter box lower shell 22. The lower side of the filter box upper cover 21 is provided with an annular filter screen 213, and the annular filter screen 213 extends along the circumferential direction of the filter box upper cover 21. The outer peripheral wall of the filter box upper cover 21 and the shell 10 jointly define the water inlet channel 13. The filter box upper cover 21 is provided with a connecting port 214, and the connecting port 214 connects the water outlet channel 23 and the water outlet 122. The upper end of the filter box lower shell 22 extends into the filter box upper cover 21. The filter box lower shell 22 accommodates filter material, and the water outlet channel 23 is defined in the filter box lower shell 22. The peripheral wall of the filter box lower shell 22 is provided with a water through hole 222, and the water through hole 222 connects the water inlet channel 13 and the water outlet channel 23. The water inlet channel 13 is connected to the water inlet 121. The outer peripheral wall of the filter box lower shell 22 is provided with a limiting rib 221, and the limiting rib 221 extends along the circumferential direction of the filter box lower shell 22. The lower end of the filter box upper cover 21 is supported on the limiting rib 221. The upper end of the filter box upper cover 21 has a protrusion 215, and the connecting port 214 passes through the protrusion 215. One end of the extension piece 123 is sleeved outside the protrusion 215.

[0163] Among them, Figure 1-Figure 6 As shown, the water sealing structure 60 includes a water stop pad 30 and an elastic member 40, the water stop pad 30 and the elastic member 40 are arranged in the shell 10, and the water stop pad 30 is located between the filter box 20 and the water inlet 121, the water stop pad 30 is a ring extending in the circumferential direction of the shell 10, the elastic member 40 is located between the filter box 20 and the water stop pad 30, and the lower side of the seat 50 is provided with a top rod 32 extending in the up and down direction.

[0164] Among them, Figure 2 and Figure 8 As shown, a slide rail 53 is provided on the inner circumferential wall of the socket 50, and the slide rail 53 protrudes from the inner circumferential wall of the socket 50. The slide rail 53 is spaced apart from the inner bottom wall of the socket 50 to define a receiving space 54. A slide rib 127 is provided on the outer circumferential wall of the shell 10, and the slide rib 127 protrudes from the outer circumferential wall of the shell 10. Along the rotation direction of the socket 50 when it is installed, the lower surface of the slide rib 127 is inclined downward.

[0165] When the filter element 100 and the socket 50 are matched, the filter element 100 and the socket 50 are rotated and connected, so that the sliding bar 127 is located in the accommodating space 54, and the connection between the filter element 100 and the socket 50 is realized. At the same time, the socket 50 rotates relative to the housing 10 and moves toward the filter element 100. In the process of moving toward the filter element 100, the socket 50 pushes the push rod 32 to move toward the filter element 100, so that the push rod 32 drives the water stop pad 30 to be separated from the water inlet 121 to open the water inlet 121, realize the connection between the water inlet 121 and the inlet 51, and enable the liquid flowing in from the inlet 51 to flow into the water inlet channel 13 through the water inlet 121, and enter the connecting channel 124 through the water outlet channel 23 after being filtered by the filter box 20, and finally pass through the water outlet 12 2 flows out from the outlet 52; when the filter element 100 and the socket 50 are released from the match, the elastic member 40 will be deformed to a certain extent, and the elastic force generated by the elastic member 40 due to its own deformation will act on the water stop pad 30, driving the water stop pad 30 to move upward, so that the water stop pad 30 is deformed and pressed against the water inlet 121, and the one-way valve 125 can prevent the residual water in the filter element 100 from flowing out from the water outlet 122, thereby ensuring the sealing of the filter element 100 and preventing the residual water in the filter element 100 from leaking from the water inlet 121, which can improve the user experience.

[0166] According to the second embodiment of the present invention, referring to Figure 7-Figure 13 As shown, the difference from the first embodiment is that the push rod 32 is arranged on the water stop pad 30, the upper end of the push rod 32 exceeds the water stop pad 30, and the push rod 32 passes through the housing 10 through the positioning hole 126 of the housing 10.

[0167] According to the third embodiment of the present invention, referring to Figure 22-Figure 24 As shown, the difference from the first embodiment is that a valve assembly 80 is provided in the socket 50, and the valve assembly 80 has an on state and a off state. When the filter element 100 and the socket 50 are assembled, the valve assembly 80 is in the on state, so that the liquid can flow to the filter element 100 for filtering; when the filter element 100 and the socket 50 are separated, the valve assembly 80 is in the off state, and the inlet 51 is connected with the outlet 52, so that the liquid flowing in from the inlet 51 can directly flow out from the outlet 52, which meets the normal use of the user and can realize different usage requirements.

[0168] According to the fourth embodiment of the present invention, referring to Figure 25-27 As shown, the difference from the third embodiment is that the push rod 32 is arranged on the water stop pad 30, the upper end of the push rod 32 exceeds the water stop pad 30, and the push rod 32 passes through the housing 10 through the positioning hole 126 of the housing 10.

[0169] Other structures and operations of the filter element assembly 200 and the water heater 300 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0170] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0171] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0172] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filter element assembly, characterized in that: include: A socket, the socket having an inlet and an outlet; A filter element, wherein the filter element is rotatably engaged with the socket, the filter element comprises a housing, a filter material box and a water sealing structure, the housing has a water inlet and a water outlet, the filter material box and the water sealing structure are arranged in the housing, a water outlet channel connected to the water outlet is formed in the filter material box, the outer peripheral wall of the filter material box and the housing jointly define a water inlet channel, and the water inlet channel is connected to the water inlet, Wherein, after the filter element and the socket are assembled, the water sealing structure opens the water inlet, the water inlet is suitable for communicating with the inlet, and the water outlet is suitable for communicating with the outlet; after the filter element and the socket are separated, the water sealing structure blocks the water inlet.

2. The filter element assembly according to claim 1, characterized in that: The water sealing structure comprises: A water-stopping pad, which is arranged in the housing and between the filter box and the water inlet; An elastic member is arranged in the shell and located between the filter box and the water-stopping pad to drive the water-stopping pad to block the water inlet.

3. The filter element assembly according to claim 2, characterized in that: The water stop pad is provided with a push rod extending along the axial direction of the shell, and one end of the push rod facing away from the filter box exceeds the water stop pad and passes through the positioning hole on the shell to pass out of the shell.

4. The filter element assembly according to claim 2, characterized in that: A push rod extending toward the filter element is provided on one side of the socket facing the filter element, and an end of the push rod facing away from the socket extends into the shell through the inlet.

5. The filter element assembly according to claim 2, characterized in that: The water inlets are multiple and spaced apart along the circumferential direction of the shell, the water outlet is arranged at the center of the shell, and the water stop pad is annular and extends along the circumferential direction of the shell.

6. The filter element assembly according to claim 2, characterized in that: The water stop pad is a silicone rubber part, an EPDM rubber part, a NBR rubber part or a fluororubber part.

7. The filter element assembly according to claim 1, characterized in that: The inner peripheral wall of the shell at one end away from the water inlet is provided with fixing ribs, and the fixing ribs are multiple and spaced apart along the circumferential direction of the shell, and the filter material box is located in the space defined by the multiple fixing ribs.

8. The filter element assembly according to claim 1, characterized in that: The filter material box comprises: A filter box upper cover, wherein a side of the filter box upper cover facing away from the water inlet is provided with an annular filter screen extending along the circumferential direction of the filter box upper cover, an outer peripheral wall of the filter box upper cover and the shell together define the water inlet channel, and the filter box upper cover is provided with a connecting port for connecting the water outlet channel and the water outlet; The filter box lower shell, one end of the filter box lower shell close to the water inlet extends into the filter box upper cover, the filter box lower shell is used to accommodate filter material, the water outlet channel is defined in the filter box lower shell, and the peripheral wall of the filter box lower shell has a water opening for connecting the water inlet channel and the water outlet channel.

9. The filter element assembly according to claim 8, characterized in that: The outer peripheral wall of the filter box lower shell is provided with limiting ribs extending along the circumferential direction of the filter box lower shell, and the end of the filter box upper cover facing away from the water inlet is supported on the limiting ribs.

10. The filter element assembly according to claim 8, characterized in that: One end of the shell body provided with the water outlet has an inwardly extending extension piece, and the extension piece has a connecting channel therein, and the connecting channel is in communication with the communication port and the water outlet.

11. The filter element assembly according to claim 10, characterized in that: One end of the filter box upper cover facing the water inlet is provided with a protrusion, the communication port passes through the protrusion, and one end of the extension piece is sleeved outside the protrusion.

12. The filter element assembly according to claim 1, characterized in that: A one-way valve is provided between the water outlet channel and the water outlet to only allow liquid to flow from the water outlet channel to the water outlet.

13. The filter element assembly according to claim 1, characterized in that: The inner circumferential wall of the socket is provided with a slide rail protruding from the inner circumferential wall of the socket, the slide rail is spaced apart from the inner bottom wall of the socket to define a accommodating space, the outer circumferential wall of the shell is provided with a slide rib protruding from the outer circumferential wall of the shell, the slide rib is suitable for being located in the accommodating space, along the rotation direction of the socket when installed, the surface of the slide rib facing away from the inner bottom wall of the socket is inclined toward a direction away from the inner bottom wall of the socket.

14. The filter element assembly according to claim 1, characterized in that: A valve assembly is provided in the socket, and the valve assembly has an on state and a off state; Wherein, after the filter element is assembled with the socket, the valve assembly is in the conducting state, the water inlet is connected with the inlet, and the water outlet is connected with the outlet; After the filter element is separated from the socket, the valve assembly is in the cut-off state, the water inlet is isolated from the inlet, and the water outlet is isolated from the outlet.

15. The filter element assembly according to claim 14, characterized in that: When the filter element is assembled with the socket, the filter element contacts and cooperates with the valve assembly, so that the valve assembly switches from the cut-off state to the conduction state.

16. The filter element assembly according to claim 14, characterized in that: In the on state, the inlet is isolated from the outlet; in the off state, the inlet is connected to the outlet.

17. A water heater, characterized in that: Comprising a filter element assembly according to any one of claims 1-16.

18. The water heater according to claim 17, characterized in that The water heater comprises a shell and a heat exchanger for heating liquid. The heat exchanger is arranged in the shell and has an exchange inlet and an exchange outlet. The exchange inlet is communicated with the inlet.

Images