Filter element, filter element assembly and water heater with filter element assembly

Abstract

The invention discloses a filter element and a water heater with the filter element. The filter element comprises a shell, a filter element, a water inlet and a water outlet, and the axial end of the shell is provided with a water inlet and a water outlet; the filter material box is arranged in the shell, the filter material box and the shell jointly define a water inlet channel and a water outlet channel which are communicated with each other, the water inlet channel is communicated with the water inlet, and the water outlet channel is communicated with the water outlet; the water stop pad is arranged in the shell and is positioned between the filter material box and the water inlet; the elastic piece is located between the filter material box and the water stop pad so as to drive the water stop pad to block the water inlet, positioning protrusions and supporting ribs are arranged on the side, facing the water inlet, of the filter material box, the multiple positioning protrusions are arranged in the circumferential direction of the filter material box at intervals or extend in the circumferential direction of the filter material box to form a ring shape, and the supporting ribs are arranged on the side, facing the water inlet, of the filter material box. The end, away from the water stop pad, of the elastic piece abuts against the supporting rib and is located in the space defined by the positioning protrusion. According to the filter element, the sealing performance of the filter element can be guaranteed, and residual water in the filter element is prevented from leaking out of the water inlet.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to a filter element, a filter element assembly and a water heater having the same. Background Art

[0002] Now more and more consumers are paying attention to the health of water quality, and are beginning to shift from simple water use scenarios to health areas such as moisturizing, soothing, and beautifying the skin.

[0003] There is a common design flaw in the filter elements on the market, which is that when the filter element is replaced, the water inside the filter element will spill out, greatly reducing the user's overall experience. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a filter element, which can ensure the sealing of the filter element when the filter element is replaced, prevent residual water inside the filter element from leaking from the water inlet, improve the user experience, and reduce safety hazards and user labor.

[0005] The present invention also provides a filter element assembly, which includes the above-mentioned filter element.

[0006] The present invention also provides a water heater, which comprises the filter element assembly mentioned above.

[0007] The filter element according to an embodiment of the present invention comprises: a shell, wherein one axial end of the shell has a water inlet and a water outlet; a filter box, wherein the filter box is arranged in the shell, and the filter box and the shell jointly define a water inlet channel and a water outlet channel that are connected to each other, the water inlet channel is connected to the water inlet, and the water outlet channel is connected to the water outlet; a water stop pad, wherein the water stop pad is arranged in the shell and located between the filter box and the water inlet; an elastic member, wherein the elastic member is arranged in the shell and located between the filter box and the water stop pad to drive the water stop pad to block the water inlet, wherein the filter box has a positioning protrusion and a support rib on the side facing the water inlet, the positioning protrusion is a plurality of protrusions arranged at intervals along the circumferential direction of the filter box or the positioning protrusion extends in a ring shape along the circumferential direction of the filter box, and the end of the elastic member away from the water stop pad is stopped against the support rib and is located in the space defined by the positioning protrusion.

[0008] According to the filter element of the embodiment of the present invention, an elastic member is provided to drive the water-stopping pad to seal the water inlet. After the filter element is assembled or the filter element is released from the socket, the elastic force generated by the deformation of the elastic member acts on the water-stopping pad, driving the water-stopping pad to move in the direction close to the water inlet, so that the water-stopping pad is pressed against the water inlet after deformation, ensuring the sealing of the filter element and preventing residual water inside the filter element from leaking from the water inlet, which can improve the user's experience, prevent residual water from wetting the user's clothes and the ground, and reduce safety hazards and the user's labor. In addition, by arranging the end of the elastic member away from the water-stopping pad in the space defined by the positioning protrusion, the elastic member can be limited to prevent the elastic member from moving in the radial direction, improve the structural stability, and thus ensure the reliability of the water-stopping pad sealing the water inlet.

[0009] In addition, the filter element according to the present invention may also have the following additional technical features:

[0010] In some embodiments, when there are a plurality of positioning protrusions spaced apart along the circumferential direction of the shell, each of the positioning protrusions extends along the circumferential direction of the filter box.

[0011] In some embodiments, the end of the elastic member facing away from the water inlet has a first positioning section, and along the axial direction of the shell, the shape and size of the outer contour of the first positioning section remain unchanged, and the first positioning section is located in the space defined by the positioning protrusion.

[0012] In some embodiments, along the axial direction of the shell, the height of the first positioning section is H1, the height of the positioning protrusion is H2, and the following relationship is satisfied: H2>H1.

[0013] In some embodiments, a side of the water stop pad facing the filter box has a positioning groove, and an end of the elastic member away from the filter box is located in the positioning groove.

[0014] In some embodiments, the elastic member has a second positioning section at one end away from the filter box, and the shape and size of the outer contour of the second positioning section remain unchanged along the axial direction of the shell, and the second positioning section is located in the positioning groove.

[0015] In some embodiments, along the axial direction of the shell, the height of the second positioning section is H3, the depth of the positioning groove is H4, and the following condition is satisfied: H4>H3.

[0016] In some embodiments, along the axial direction of the shell, at least one of the two end surfaces of the elastic member is a plane.

[0017] In some embodiments, the outer contour dimension of the elastic member at one end close to the filter material box is larger than the outer contour dimension of the elastic member at one end close to the water stop pad.

[0018] In some embodiments, the elastic member is a spring.

[0019] In some embodiments, the water stop pad is a silicone rubber part, an EPDM rubber part, a NBR rubber part, or a fluororubber part.

[0020] In some embodiments, 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.

[0021] In some embodiments, 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.

[0022] In some embodiments, the outer peripheral wall of the filter box and the shell together define the water inlet channel, and the filter box defines a water outlet channel.

[0023] In some embodiments, the 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 water outlet channel and the water outlet.

[0024] In some embodiments, a one-way valve is provided in the connecting channel to only allow liquid to flow from the water outlet channel to the water outlet.

[0025] In some embodiments, the shell includes: a filter element lower shell, at least part of the filter material box is located in the filter element lower shell; a filter element upper cover, the filter element upper cover is connected to the filter element lower shell, and the water inlet and the water outlet are both arranged on the filter element upper cover.

[0026] In some embodiments, the filter element lower shell is threadedly connected or welded to the filter element upper cover.

[0027] In some embodiments, the filter box includes: a filter box upper cover, the positioning protrusion is arranged on the end surface of the filter box upper cover facing the water inlet, and the end of the filter box upper cover facing away from the water stop pad is open; a filter box lower shell, and the end of the filter box lower shell close to the water stop pad extends into the filter box upper cover.

[0028] In some embodiments, 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 stop pad is supported on the limiting ribs.

[0029] According to an embodiment of the present invention, the filter element assembly includes: a socket, which is provided with an inlet and an outlet; the above-mentioned filter element, the filter element and the socket are detachably connected, the water inlet is suitable for communicating with the inlet, the water outlet is suitable for communicating with the outlet, and the shell is also provided with a through hole; a push rod, the push rod is passed through the through hole, one end of the push rod is connected to one of the socket and the water stop pad, and the other end is suitable for abutting against the other of the socket and the water stop pad, when the socket and the filter element are installed, the socket moves toward the filter element relative to the filter element, and the push rod drives the water stop pad to be spaced apart from the water inlet to open the water inlet.

[0030] According to the filter element assembly of the embodiment of the present invention, by providing the above-mentioned filter element, by providing an elastic member to drive the water-stop pad to block the water inlet, after the filter element is assembled or the filter element is released from the socket, the elastic force generated by the elastic member's own deformation acts on the water-stop pad, driving the water-stop pad to move in the direction close to the water inlet, so that the water-stop pad is pressed against the water inlet after deformation, ensuring the sealing of the filter element, preventing residual water inside the filter element from leaking from the water inlet, improving the user's experience, preventing residual water from wetting the user's clothes and the ground, and reducing safety hazards and the user's labor. In addition, by arranging the end of the elastic member away from the water-stop pad in the space defined by the positioning protrusion, the elastic member can be limited, preventing the elastic member from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water-stop pad blocking the water inlet.

[0031] In some embodiments, 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; 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.

[0032] In some embodiments, 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.

[0033] In some embodiments, in the on state, the inlet is isolated from the outlet; in the off state, the inlet is connected to the outlet.

[0034] The present invention also provides a water heater having the above embodiment.

[0035] According to the water heater of the embodiment of the present invention, by providing the above-mentioned filter element assembly, by providing an elastic member to drive the water stop pad to block the water inlet, after the filter element is assembled or the filter element is released from the socket, the elastic force generated by the elastic member's own deformation acts on the water stop pad, driving the water stop pad to move in the direction close to the water inlet, so that the water stop pad is pressed against the water inlet after deformation, ensuring the sealing of the filter element, preventing residual water inside the filter element from leaking from the water inlet, improving the user's experience, preventing residual water from wetting the user's clothes and the ground, reducing safety hazards and the user's labor. In addition, by arranging the end of the elastic member away from the water stop pad in the space defined by the positioning protrusion, the elastic member can be limited, preventing the elastic member from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad blocking the water inlet.

[0036] 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

[0037] 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:

[0038] Figure 1 is an exploded view of a filter element assembly according to a first embodiment of the present invention from one angle;

[0039] Figure 2 is a cross-sectional view of a filter element assembly according to a first embodiment of the present invention;

[0040] Figure 3 is a top view of the cooperation between the filter element and the ejector rod according to an embodiment of the present invention;

[0041] Figure 4 is a cross-sectional view of the cooperation between the filter element and the ejector rod according to an embodiment of the present invention;

[0042] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0043] Figure 6 is a cross-sectional view of the cooperation between the filter element and the ejector rod according to an embodiment of the present invention, wherein the filter element upper cover and the filter element lower shell are released from cooperation;

[0044] Figure 7 is a three-dimensional diagram of a filter material box of a filter element according to an embodiment of the present invention;

[0045] Figure 8 is a cross-sectional view of a filter material box of a filter element according to an embodiment of the present invention;

[0046] Fig. 9is a three-dimensional view of a filter element lower shell of a filter element according to an embodiment of the present invention;

[0047] Fig.10 is a top view of a filter element lower shell of a filter element according to an embodiment of the present invention;

[0048] Fig.11 is a three-dimensional diagram of a filter material box upper cover of a filter element according to an embodiment of the present invention;

[0049] Fig.12 is a top view of a filter material box upper cover of a filter element according to an embodiment of the present invention;

[0050] Fig.13 is a front view of an elastic member of a filter element according to an embodiment of the present invention;

[0051] Fig.14 is a three-dimensional view at one angle of an elastic member of a filter element according to an embodiment of the present invention;

[0052] Fig.15 is a three-dimensional view of the elastic member of the filter element according to an embodiment of the present invention from another angle;

[0053] Fig.16 is a bottom view of a water stop pad of a filter element according to an embodiment of the present invention;

[0054] Fig.17 is a top view of a water stop pad of a filter element according to an embodiment of the present invention;

[0055] Fig.18 yes Figure 6 The enlarged view of point B in the middle;

[0056] Fig.19 is a schematic diagram of the structure of a water heater according to some embodiments of the present invention;

[0057] Fig. 20 is a schematic structural diagram of a water heater according to some other embodiments of the present invention;

[0058] Fig.21 is a partial cross-sectional view of a filter element assembly according to a second embodiment of the present invention, wherein one end of the push rod is connected to the receiving seat, and the other end is abutted against the water stop pad;

[0059] Fig. 22 is a cross-sectional view of a portion of a receiving seat of a filter element assembly according to a second embodiment of the present invention, wherein one end of a push rod is connected to the receiving seat;

[0060] Fig.23 is an exploded view of a filter element assembly according to a second embodiment of the present invention from another angle, wherein one end of the push rod is connected to the receiving seat;

[0061] Fig.24is a partial cross-sectional view of a filter element assembly according to a third embodiment of the present invention, wherein one end of the push rod is connected to the water stop pad, and the other end is abutted against the receiving seat;

[0062] Fig.25 is a cross-sectional view of a portion of a receiving seat of a filter element assembly according to a third embodiment of the present invention, wherein one end of the ejector rod is connected to a water stop pad;

[0063] Fig.26 is an exploded view of a filter element assembly according to a third embodiment of the present invention from another angle, wherein one end of the push rod is connected to a water stop pad;

[0064] Fig. 27 is a top cross-sectional view of a connector of a filter element assembly according to an embodiment of the present invention;

[0065] Fig.28 is a cross-sectional view 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;

[0066] Fig.29 4 is a cross-sectional view 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.

[0067] Reference numerals:

[0068] 100. Filter element;

[0069] 1. Shell; 11. Filter element lower shell; 111. Fixing ribs; 12. Filter element upper cover; 121. Water inlet; 122. Water outlet; 123. Extension piece; 124. Connecting channel; 125. One-way valve; 126. Through hole; 127. Sliding ribs; 13. Water inlet channel;

[0070] 2. Filter box; 21. Filter box upper cover; 211. Positioning protrusion; 212. Support rib; 213. Filter screen; 22. Filter box lower shell; 221. Limiting rib; 23. Water outlet channel;

[0071] 3. Water stop pad; 31. Positioning groove; 32. Push rod; 33. Push rod positioning hole;

[0072] 4. elastic member; 41. first positioning section; 42. second positioning section;

[0073] 5. Seat; 51. Inlet; 52. Outlet; 53. Slide rail; 54. First installation cavity; 55. Second installation cavity; 56. Communication cavity;

[0074] 6. Valve assembly; 61. First stop valve; 611. First valve seat; 612. First valve core; 62. Second stop valve; 621. Second valve seat; 622. Second valve core; 63. First communication channel; 64. Second communication channel;

[0075] 200, filter element assembly;

[0076] 300. Water heater; 301. Exchange inlet; 302. Exchange outlet; 303. Housing; 304. Heat exchanger. DETAILED DESCRIPTION

[0077] Embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0078] 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.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] The filter element 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0082] like Figure 4 and attached Figure 6As shown, the filter element 100 according to the embodiment of the present invention includes a housing 1 , a filter material box 2 , a water stop pad 3 and an elastic member 4 .

[0083] Specifically, refer to the attached Figure 1 As shown, the filter element 100 is detachably connected to the socket 5, the inner peripheral wall of the socket 5 is provided with a plurality of slide rails 53 spaced apart along the circumferential direction of the socket 5, and the outer peripheral wall of the filter element 100 is provided with a plurality of slide ribs 127 corresponding to the plurality of slide rails 53 one by one. The cooperation between the slide rails 53 and the slide ribs 127 can facilitate the disassembly and assembly of the filter element 100 and the socket 5, facilitate the replacement of the filter element 100, and improve the assembly efficiency of the filter element 100 and the socket 5.

[0084] Further, see Attachment Figure 2 As shown, an inlet 51 is provided on the outer peripheral wall of the socket 5, an outlet 52 is provided at one axial end of the socket 5, and an axial end of the shell 1 has a water inlet 121 and a water outlet 122, the water inlet 121 is connected with the inlet 51, and the water outlet 122 is connected with the outlet 52, the filter box 2 is arranged in the shell 1, and the filter box 2 is provided with filter material, which can filter and purify the liquid entering the filter box 2, and the filter box 2 and the shell 1 jointly define a water inlet channel 13 and a water outlet channel 23 that are connected to each other, the water inlet channel 13 is connected with the water inlet 121, and the water outlet channel 23 is connected with the water outlet 122.

[0085] It can be understood that 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 2 through the water inlet channel 13. After being filtered in the filter box 2, it 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, thereby realizing the filtration of the liquid and realizing the transformation from a simple water use scene to health fields such as moisturizing, soothing, and beautifying the skin, thereby improving the user's bathing comfort and usage experience.

[0086] Optionally, the filter material is a resin filter material, an adsorption filter material or an anti-scaling filter material.

[0087] Further, see Attachment Figure 4 As shown, the water-stop pad 3 is arranged in the shell 1 and is located between the filter box 2 and the water inlet 121. The elastic member 4 is arranged in the shell 1 and is located between the filter box 2 and the water-stop pad 3 to drive the water-stop pad 3 to block the water inlet 121. After the filter element 100 is assembled or the filter element 100 is released from the connector 5, the elastic member 4 will be deformed to a certain extent. The elastic force generated by the elastic member 4's own deformation will act on the water-stop pad 3, driving the water-stop pad 3 to move toward the direction close to the water inlet 121, so that the water-stop pad 3 is pressed against the water inlet 121 after deformation, thereby ensuring the sealing of the filter element 100 and preventing residual water inside the filter element 100 from leaking from the water inlet 121, which can improve the user's experience, prevent residual water from wetting the user's clothes and the ground, and reduce safety hazards and the user's workload.

[0088] Among them, refer to the attached Figure 7 and attached Fig.11 As shown, the filter box 2 has a positioning protrusion 211 and a support rib 212 on one side facing the water inlet 121. The positioning protrusion 211 is a plurality of positioning protrusions 211 arranged at intervals along the circumferential direction of the filter box 2 or the positioning protrusion 211 extends in a ring shape along the circumferential direction of the filter box 2. Figure 4 and attached Figure 5 As shown, one end of the elastic member 4 away from the water-stop pad 3 abuts against the support rib 212 and is located in the space defined by the positioning protrusion 211. The setting of the positioning protrusion 211 can limit the elastic member 4, prevent the elastic member 4 from moving in the radial direction, improve the structural stability, and thus ensure the reliability of the water-stop pad 3 in blocking the water inlet 121.

[0089] Further, see Appendix Figure 7 As shown, the support ribs 212 are located in the space defined by the positioning protrusion 211 and are spaced apart along the circumferential direction of the filter box 2. Each support rib 212 extends along the radial direction of the filter box 2. The arrangement of the support ribs 212 can support the elastic member 4 and ensure the reliability of the elastic member 4. For example, the support ribs 212 can be two, three, four, five, six, seven or eight spaced apart along the circumferential direction of the filter box 2. In a specific example, refer to the attached Fig.11 and attached Fig.12 As shown, there are eight supporting ribs 212 spaced apart along the circumferential direction of the filter material box 2, which can play a supporting role at eight locations of the elastic member 4 in the circumferential direction.

[0090] Further, when the positioning protrusion 211 is annular and extends in the circumferential direction of the housing 1, 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 1, refer to the attached Fig.12 As shown, both ends of each positioning protrusion 211 along the circumferential direction of the filter box 2 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.

[0091] According to the filter element 100 of the embodiment of the present invention, an elastic member 4 is provided to drive the water stop pad 3 to block the water inlet 121. After the filter element 100 is assembled or the filter element 100 is released from the socket 5, the elastic force generated by the deformation of the elastic member 4 acts on the water stop pad 3, driving the water stop pad 3 to move in the direction close to the water inlet 121, so that the water stop pad 3 is pressed against the water inlet 121 after deformation, ensuring the sealing of the filter element 100, preventing the residual water inside the filter element 100 from leaking from the water inlet 121, improving the user's experience, preventing the residual water from wetting the user's clothes and the ground, reducing safety hazards and the user's labor. In addition, by arranging the end of the elastic member 4 away from the water stop pad 3 in the space defined by the positioning protrusion 211, the elastic member 4 can be limited, preventing the elastic member 4 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 3 blocking the water inlet 121.

[0092] In some embodiments of the present invention, Figure 7 and attached Fig.11 As shown, when there are multiple positioning protrusions 211 spaced apart along the circumferential direction of the housing 1, each positioning protrusion 211 extends along the circumferential direction of the filter box 2. Compared with the positioning protrusion 211 extending in a ring shape along the circumferential direction of the housing 1, it is possible to reduce the production cost of the filter element 100 and the weight of the filter element 100 while avoiding the displacement of the elastic member 4. For example, there can be two, three, four, five or six positioning protrusions 211 spaced apart along the circumferential direction of the housing 1. In a specific example, refer to the attached Fig.11 As shown, there are four positioning protrusions 211 spaced apart along the circumferential direction of the housing 1 . The four positioning protrusions 211 are evenly spaced apart and can play a limiting role at four locations of the elastic member 4 in the circumferential direction.

[0093] In some embodiments of the present invention, Figure 5 and attached Fig.13 As shown, the end of the elastic member 4 facing away from the water inlet 121 has a first positioning section 41, which is arranged along the axial direction of the housing 1 (see FIG. Fig.13 In the direction a shown in the figure, the shape and size of the outer contour of the first positioning segment 41 remain unchanged, the first positioning segment 41 is located in the space defined by the positioning protrusion 211, and the outer contour of the first positioning segment 41 fits with the inner wall of the positioning protrusion 211, which can increase the contact area between the elastic member 4 and the positioning protrusion 211, enhance the limiting effect of the positioning protrusion 211 on the elastic member 4, and improve the structural stability.

[0094] In a further embodiment of the present invention, referring to the attached Figure 5 and attached Fig.13As shown, along the axial direction of the shell 1, the height of the first positioning section 41 is H1, the height of the positioning protrusion 211 is H2, and it satisfies: H2>H1, which can ensure sufficient blocking height to prevent the first positioning section 41 from escaping from the space defined by the positioning protrusion 211, and further ensure the reliability of the cooperation between the elastic member 4 and the positioning protrusion 211, thereby ensuring the stability of the water stop pad 3 in blocking the water inlet 121.

[0095] It should be noted that the reference Figure 5 As shown, when the filter box 2 has a support rib 212 on the end face facing the water stop pad 3, the height of the support rib 212 is H5, H2-H5>H1, which can ensure sufficient blocking height while supporting the elastic member 4, preventing the first positioning section 41 from escaping from the space defined by the positioning protrusion 211 and the support rib 212, thereby ensuring the stability of the water stop pad 3 in blocking the water inlet 121.

[0096] In some embodiments of the present invention, Fig.16 and attached Fig.18 As shown, the water stop pad 3 has a positioning groove 31 on the side facing the filter box 2, and the positioning groove 31 extends in a ring shape along the circumferential direction of the water stop pad 3. The end of the elastic member 4 away from the filter box 2 is located in the positioning groove 31. The setting of the positioning groove 31 can limit the end of the elastic member 4 away from the filter box 2, thereby preventing the elastic member 4 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 3 in blocking the water inlet 121.

[0097] In a further embodiment of the present invention, referring to the attached Fig.13 and attached Fig.18 As shown, the end of the elastic member 4 away from the filter box 2 has a second positioning section 42. Along the axial direction of the shell 1, 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 the inner wall of the positioning groove 31, which can increase the contact area between the elastic member 4 and the positioning groove 31, enhance the limiting effect of the positioning groove 31 on the elastic member 4, and improve the structural stability.

[0098] In a further embodiment of the present invention, referring to the attached Fig.13 and attached Fig.18 As shown, along the axial direction of the shell 1, the height of the second positioning section 42 is H3, the depth of the positioning groove 31 is H4, and it satisfies: H4>H3, which can ensure sufficient blocking depth to prevent the second positioning section 42 from escaping from the positioning groove 31, further ensure the reliability of the cooperation between the elastic member 4 and the positioning groove 31, thereby ensuring the stability of the water stop pad 3 in blocking the water inlet 121.

[0099] In some embodiments of the present invention, Fig.14 and attached Fig.15As shown, along the axial direction of the shell 1, at least one of the two end faces of the elastic member 4 is a plane, which can increase the contact area between the elastic member 4 and the water stop pad 3 and / or the filter box 2, and further avoid radial deviation of the elastic member 4, thereby ensuring that the water stop pad 3 will not produce radial movement, thereby ensuring the reliability of the water stop pad 3 in blocking the water inlet 121.

[0100] It can be understood that the end of the elastic member 4 close to the filter box 2 can be a plane, which can increase the contact area between the first positioning section 41 and the support rib 212, and further avoid the radial deviation of the elastic member 4; the end of the elastic member 4 away from the filter box 2 can be a plane, which can increase the contact area between the second positioning section 42 and the positioning groove 31, and further avoid the radial deviation of the elastic member 4; the axial direction of the elastic member 4 (refer to the attached Fig.13 Both ends of the a direction shown in the figure are planes, which can increase the contact area between the first positioning section 41 and the support rib 212 and the second positioning section 42 and the positioning groove 31, and further prevent the elastic member 4 from radially deviating.

[0101] In some embodiments of the present invention, Fig.13 As shown, the outer contour dimension of the elastic member 4 near the filter box 2 is larger than the outer contour dimension of the elastic member 4 near the water stop pad 3, which can improve the stability of the elastic member 4 and avoid the axis of the elastic member 4 near the filter box 2 being inconsistent with the axis of the elastic member 4 near the water stop pad 3.

[0102] In some embodiments of the present invention, Fig.14 As shown, the elastic member 4 is a spring, which is light in weight and low in cost, and can reduce the production cost and weight of the filter element 100.

[0103] In some embodiments of the present invention, the water stop pad 3 is a silicone rubber part, an EPDM rubber part, a NBR rubber part, or a fluororubber part, and has a certain elasticity, which can ensure the stability of the cooperation between the water stop pad 3 and the elastic part 4 and improve the reliability of the water stop pad 3 in blocking the water inlet 121.

[0104] In some embodiments of the present invention, Figure 3As shown, the water inlets 121 are multiple and spaced apart along the circumferential direction of the shell 1, the water outlet 122 is arranged at the center of the shell 1, and the water stop pad 3 is a ring extending along the circumferential direction of the shell 1. The water stop pad 3 can block the water inlet 121 and avoid the water outlet 122, and will not affect the normal water outlet 122. After the filter element 100 is assembled or the filter element 100 is released from the socket 5, the water inlet 121 is blocked to prevent residual water from leaking out of the water inlet 121. When the filter element 100 is matched with the socket 5, the water inlet 121 is opened to allow liquid to flow into the filter element 100. For example, the water inlet 121 can be two, three, four, five or six spaced apart along the circumferential direction of the shell 1. In a specific example, refer to the attached Figure 3 As shown, there are three water inlets 121 spaced apart along the circumferential direction of the shell 1 , which can increase the water inlet area of ​​the water inlet 121 and improve the purification efficiency of the filter element 100 .

[0105] In some embodiments of the present invention, Fig. 9 As shown, the inner circumferential wall of the shell 1 at one end away from the water inlet 121 is provided with fixing ribs 111, and the fixing ribs 111 are multiple and spaced apart along the circumferential direction of the shell 1. The filter box 2 is located in the space defined by the multiple fixing ribs 111. The fixing ribs 111 can position the filter box 2 from the circumferential direction to prevent the filter box 2 from moving inside the shell 1, ensure that the axis of the filter box 2 coincides with the axis of the shell 1, ensure that the water outlet 122 is opposite to the water outlet channel 23, avoid mixing of the liquids in the water outlet channel 23 and the water inlet channel 13, ensure the filtering effect of the filter element 100, and improve the user experience. For example, the fixing ribs 111 can be two, three, four, five or six, spaced apart along the circumferential direction of the shell 1. In a specific example, refer to the attached Fig.10 As shown, there are six fixing ribs 111 spaced apart along the circumferential direction of the housing 1 . The six fixing ribs 111 are evenly spaced apart and can play a positioning role at six locations in the circumferential direction of the filter box 2 to prevent the filter box 2 from moving inside the housing 1 .

[0106] In some embodiments of the present invention, Figure 2 As shown, the outer wall of the filter box 2 and the shell 1 jointly define a water inlet channel 13, and a water outlet channel 23 is defined inside the filter box 2. It can be understood that the liquid entering the filter element 100 from the water inlet 121 flows into the filter box 2 through the water inlet channel 13, and after being filtered in the filter box 2, flows out of the filter element 100 from the water outlet 122 through the water outlet channel 23, thereby achieving filtering of the liquid.

[0107] Optionally, refer to the attached Figure 7As shown, at least part of the peripheral wall of the filter box 2 is formed as a filter screen 213, and the filter screen 213 extends in a ring shape along the circumferential direction of the filter box 2. The setting of the filter screen 213 allows liquid to flow into the interior of the filter box 2 and ensures that the filter material does not flow out of the filter box 2. At the same time, the filter screen 213 can also filter some of the mud and large particles in the liquid to a certain extent, avoid a large amount of impurities from entering the interior of the filter box 2, and extend the service life of the filter box 2.

[0108] In a further embodiment of the present invention, referring to the attached Figure 4 and attached Figure 6 As shown, one end of the housing 1 provided with the water outlet 122 has an inwardly extending extension piece 123, and the extension piece 123 has a connecting channel 124, which is in communication with the water outlet channel 23 and the water outlet 122. The connecting channel 124 allows the liquid after filtration 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 the mixing of the liquid after filtration and the liquid before filtration, and ensure the filtering effect of the filter element 100. After the filter element 100 is assembled, the connecting channel 124 is sealed and connected with the water outlet channel 23 through a sealing ring, so as to further fix the filter material box 2 inside the housing 1.

[0109] In a further embodiment of the present invention, referring to the attached Figure 4 and attached Figure 6 As shown, a one-way valve 125 is provided in the connecting channel 124 to only allow the liquid to flow from the water outlet channel 23 to the water outlet 122, to prevent the liquid from flowing back or flowing into the filter element 100 from the water outlet 122, to avoid affecting the outflow of the filtered liquid, and to ensure the filtering effect of the filter element 100. It should be noted that 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. Generally, the forward water inlet pressure is set to be 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 to overcome the pressure of the weight of the water stored in the filter element 100 acting on the one-way valve 125, and 0.05Mpa is to overcome the atmospheric pressure.

[0110] In some embodiments of the present invention, Figure 6 As shown, the housing 1 includes a filter element lower shell 11 and a filter element upper cover 12, at least part of the filter material box 2 is located in the filter element lower shell 11, the filter element upper cover 12 is connected to the filter element lower shell 11, and the water inlet 121 and the water outlet 122 are both arranged on the filter element upper cover 12, which can facilitate the production and processing of the filter element 100, and facilitate the placement of components such as the filter material box 2, the elastic member 4 and the water stop pad 3 into the housing 1.

[0111] In a further embodiment of the present invention, referring to the attached Figure 6As 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 is ensured to coincide, and the water inlet 121 is ensured to be opposite to the water inlet channel 13, and the water outlet 122 is ensured to be opposite to the water outlet channel 23, and 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.

[0112] In some embodiments of the present invention, Figure 8 As shown, the filter box 2 includes a filter box upper cover 21 and a filter box lower shell 22, a positioning protrusion 211 is provided on the end surface of the filter box upper cover 21 facing the water inlet 121, the end of the filter box upper cover 21 away from the water stop pad 3 is open, and the end of the filter box lower shell 22 close to the water stop pad 3 extends into the filter box upper cover 21, which can facilitate the production and processing of the filter element 100 and the loading of the filter material. In addition, the filter box lower shell 22 is used to place the filter material, the filter box upper cover 21 allows liquid to enter and restricts the outflow of the filter material, and at least part of the peripheral wall of the filter box lower shell 22 is formed as a grille, so that the liquid can pass through the filter screen 213 and then enter the filter box 2 from the grille, so as to achieve secondary filtration of the filter screen 213 and the filter material.

[0113] In a further embodiment of the present invention, referring to the attached Figure 8 As shown, the outer peripheral wall of the filter box lower shell 22 has a limiting rib 221 extending along the circumferential direction of the filter box lower shell 22, and the end of the filter box upper cover 21 facing away from the water stop pad 3 is supported on the limiting rib 221 to position the filter box upper cover 21 and prevent the filter box upper cover 21 from continuing to move in the direction away from the water outlet 122, thereby ensuring the stability of the filter box 2 assembly.

[0114] The present invention also provides a filter element assembly 200 having the filter element 100 of the above embodiment.

[0115] like Figure 2 and attached Fig.26 As shown, the filter element assembly 200 according to the embodiment of the present invention includes a socket 5, a push rod 32 and the above-mentioned filter element 100.

[0116] Specifically, refer to the attached Figure 2 , Attachment Fig.23 and attached Fig. 27As shown, the socket 5 is disposed at the upper end of the filter element 100 to install the filter element 100. For example, the socket 5 can be disposed on a water-using device such as a water heater 300. The filter element 100 can be connected to the water heater 300 through the socket 5 to filter the water flowing into the water heater 300 or the water flowing out of the water heater 300. An inlet 51 and an outlet 52 are provided on the connecting seat 5, and the filter element 100 is detachably connected to the connecting seat 5. The water inlet 121 is suitable for communicating with the inlet 51, and the water outlet 122 is suitable for communicating with the outlet 52. A through hole 126 is also provided on the shell 1, and the push rod 32 is passed through the through hole 126. One end of the push rod 32 is connected to the connecting seat 5 and one of the water stop pads 3, and the other end is suitable for abutting against the other of the connecting seat 5 and the water stop pad 3. When the connecting seat 5 and the filter element 100 are installed, the connecting seat 5 moves toward the filter element 100 relative to the filter element 100, and the push rod 32 drives the water stop pad 3 to be spaced apart from the water inlet 121 to open the water inlet 121.

[0117] It is understandable that, referring to the Fig.24 As shown, one end of the push rod 32 may be connected to the water stop pad 3, and the other end may be stopped at the receiving seat 5. When the filter element 100 is matched with the receiving seat 5, the end of the push rod 32 that is away from the filter material box 2 exceeds the water stop pad 3 and passes through the through hole 126 on the housing 1 to pass through the housing 1, thereby opening the water inlet 121 and connecting the inlet 51 and the water inlet channel 13; refer to the attached Fig.21 As shown, one end of the push rod 32 may be connected to the socket 5, and the other end may be stopped at the water stop pad 3. When the filter element 100 is matched with the socket 5, the push rod 32 passes through the water inlet 121 to push the water stop pad 3 toward the direction close to the filter box 2, thereby opening the water inlet 121 and connecting the inlet 51 and the water inlet channel 13.

[0118] Optionally, there is no need to set the push rod 32, and an elastic member 4 with relatively small elastic force is selected, and the water stop pad 3 is pushed toward the filter box 2 only by the pressure of the liquid flowing in at the inlet 51, so that the water inlet 121 can be opened and the inlet 51 and the water inlet channel 13 are connected.

[0119] When one end of the push rod 32 is connected to the water stop pad 3 and the other end is stopped at the seat 5, refer to the attached Figure 4 As shown, the push rod 32 extends along the axial direction of the shell 1, and the push rod 32 is detachably connected to the water stop pad 3. A plurality of push rod positioning holes 33 are provided on the side of the water stop pad 3 away from the positioning groove 31. The plurality of push rod positioning holes 33 are evenly spaced along the circumferential direction of the water stop pad 3. The push rod 32 is a plurality of push rod positioning holes 33 corresponding one to one. One end of the push rod 32 close to the filter box 2 is arranged in the push rod positioning hole 33, and the end of the push rod 32 away from the filter box 2 exceeds the water stop pad 3 and passes through the shell 1 through the through hole 126 on the shell 1, thereby playing a positioning role to ensure that the water stop pad 3 is coaxial with the shell 1.

[0120] Specifically, refer to the attached Fig.17 As shown, three push rod positioning holes 33 are provided on the side of the water stop pad 3 away from the positioning groove 31. The three push rod positioning holes 33 are evenly spaced along the circumferential direction of the water stop pad 3. There are three push rods 32 corresponding to the push rod positioning holes 33 one by one, which can play a positioning role from three locations to ensure that the axis of the water stop pad 3 is consistent with the axis of the shell 1.

[0121] It is understandable that, referring to the Figure 4 and attached Figure 6 As shown, during the process of assembling the filter element 100, after the filter material is filled in the filter box lower shell 22, the filter box upper cover 21 is fitted onto the filter box lower shell 22, and then the filter box 2 is fixed as a whole in the filter element lower shell 11, and then the elastic member 4 is installed on the filter box upper cover 21, and the water stop pad 3 is placed on the elastic member 4, and then the top rod 32 is placed in the top rod positioning hole 33 of the water stop pad 3, and finally the whole is screwed together with the filter element upper cover 12.

[0122] It is understandable that when the filter element 100 is matched with the socket 5, Figure 2 As shown, the inner surface of the socket 5 contacts with the push rod 32 and pushes the push rod 32 to move in the direction close to the filter box 2, thereby indirectly pushing the water stop pad 3 to move in the direction close to the filter box 2 through the push rod 32, so that the water stop pad 3 opens the water inlet 121, and then the liquid flowing in from the inlet 51 can 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 2, and finally flow out from the outlet 52 through the water outlet 122; when the filter element 100 and the socket 5 are released from the match, refer to the attached Figure 4 As shown, the socket 5 moves in the direction away from the filter element 100, and the pressure of the socket 5 on the top rod 32 gradually decreases until it disappears. Under the action of the elastic member 4, the elastic member 4 drives the water stop pad 3 to move in the direction close to the water inlet 121 so that the water stop pad 3 is pressed against the water inlet 121, thereby sealing the water inlet 121, ensuring the sealing of the filter element 100, and preventing residual water inside the filter element 100 from leaking from the water inlet 121, which can improve the user's experience, prevent residual water from wetting the user's clothes and the ground, and reduce safety hazards and the user's workload.

[0123] According to the filter element assembly of the embodiment of the present invention, by providing the above-mentioned filter element, by providing an elastic member 4 to drive the water stop pad 3 to block the water inlet 121, after the filter element 100 is assembled or the filter element 100 is released from the socket 5, the elastic force generated by the deformation of the elastic member 4 acts on the water stop pad 3, driving the water stop pad 3 to move in the direction close to the water inlet 121, so that the water stop pad 3 is pressed against the water inlet 121 after deformation, ensuring the sealing of the filter element 100, preventing the residual water inside the filter element 100 from leaking from the water inlet 121, improving the user's experience, preventing the residual water from wetting the user's clothes and the ground, reducing safety hazards and the user's labor. In addition, by arranging the end of the elastic member 4 away from the water stop pad 3 in the space defined by the positioning protrusion 211, the elastic member 4 can be limited, preventing the elastic member 4 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 3 blocking the water inlet 121.

[0124] In some embodiments of the present invention, Fig.21 and attached Fig. 22 , combined with reference to Fig. 27 The socket 5 is provided with a valve assembly 6, and the valve assembly 6 has an on state and a cut-off state. Fig.21 As shown, after the filter element 100 is assembled with the socket 5, the valve assembly 6 is in a conducting state, the water inlet 121 is connected to the inlet 51, and the water outlet 122 is connected to the outlet 52; Fig. 22 As shown, after the filter element 100 is separated from the socket 5 , the valve assembly 6 is in a cut-off state, the water inlet 121 is isolated from the inlet 51 , and the water outlet 122 is isolated from the outlet 52 .

[0125] It is understandable that if the filter element 100 needs to be replaced, the water valve in the home needs to be closed first. However, by controlling the valve assembly 6 in the socket 5 to be in a cut-off state, the water inlet 121 and the inlet 51 as well as the water outlet 122 and the outlet 52 can be controlled to be isolated, so that the water flow in the filter element assembly 200 is blocked, preventing water leakage when the filter element 100 is removed, thereby achieving the replacement of the filter element 100 without closing the water valve, with simple steps and convenient operation.

[0126] In a further embodiment of the present invention, when the filter element 100 is assembled with the socket 5, the filter element 100 contacts and cooperates with the valve assembly 6, so that the valve assembly 6 switches from the cut-off state to the on state. It is understandable that after the filter element 100 is installed, the filter element 100 contacts and cooperates with the valve assembly 6, so that the valve assembly 6 switches from the cut-off state to the on state, so that water can flow to the filter element 100 for filtration. When the filter element 100 is disassembled, the filter element 100 is spaced apart from the valve assembly 6, so that the valve assembly 6 switches from the on state to the cut-off state, thereby preventing water leakage when the filter element 100 is disassembled. In this way, the automation of the switching of the valve assembly 6 between the on and off states is realized, without the need for manual operation, and the installation steps are simplified.

[0127] In a further embodiment of the present invention, in the on state, the inlet 51 is separated from the outlet 52, thereby preventing the water in the inlet 51 and the outlet 52 from mixing and reducing the filtering effect; in the off state, the inlet 51 is connected to the outlet 52, thereby, the water from the inlet 51 cannot flow to the filter element 100, so that the water can flow directly from the inlet 51 to the outlet 52, preventing excessive water pressure from causing structural damage.

[0128] In a further embodiment of the present invention, referring to the attached Fig.21 and attached Fig. 22 As shown, a first installation cavity 54, a second installation cavity 55 and a connecting cavity 56 are formed in the connecting seat 5, and the first installation cavity 54 and the second installation cavity 55 are separated from each other. The valve assembly 6 includes a first stop valve 61 and a second stop valve 62. The first stop valve 61 is provided in the first installation cavity 54, and the first stop valve 61 includes a first valve seat 611 and a first valve core 612. A first connecting passage 63 connected to the inlet 51 is formed in the first valve seat 611, and the first valve core 612 is movably arranged in the first connecting passage 63 between a first position and a second position. A second stop valve 62 is provided in the second installation cavity 55, and the second stop valve 62 includes a second valve seat 621 and a second valve core 622. A second connecting passage 64 connected to the outlet 52 is formed in the second valve seat 621, and the second valve core 622 is movably arranged in the second connecting passage 64 between a third position and a fourth position.

[0129] Among them, refer to the attached Fig.21 , Attachment Fig.24 and 29 As shown, when the valve assembly 6 is in the conducting state, the first valve core 612 is in the first position and the second valve core 622 is in the third position, the first connecting channel 63 connects the inlet 51 with the water inlet 121, the second connecting channel 64 connects the outlet 52 with the water outlet 122, and the first connecting channel 63 and the second connecting channel 64 are both separated from the connecting cavity 56, so that water can enter the water inlet 121 from the inlet 51 through the first connecting channel 63 and enter the filter element 100, and flow from the water outlet 122 to the second connecting channel 64, and then flow out from the outlet 52, thereby achieving water filtration.

[0130] Reference Fig. 22 , Attachment Fig.25 and attached Fig.28As shown, when the valve assembly 6 is in the cut-off state, the first valve core 612 is in the second position and the second valve core 622 is in the fourth position, the first connecting channel 63 is separated from the water inlet 121, the second connecting channel 64 is separated from the water outlet 122, and the first connecting channel 63 and the second connecting channel 64 are connected through the connecting cavity 56, thereby allowing water to flow directly from the inlet 51 through the first connecting channel 63 and the second connecting channel 64 to the outlet 52, thereby preventing excessive water pressure from causing structural damage.

[0131] In some embodiments of the present invention, Figure 1 As shown, the socket 5 and the filter element 100 are rotationally connected, thereby improving the assembly portability and assembly efficiency of the socket 5 and the filter element 100, and at the same time can improve the reliability of the connection between the socket 5 and the filter element 100, and can ensure that during the rotational connection of the socket 5 and the filter element 100, the socket 5 moves toward the filter element 100, so that the top rod 32 moves with the socket 5 toward the filter element 100, and then stops with the water stop pad 3. After the socket 5 and the filter element 100 are installed, it is ensured that the water inlet 121 is opened, the inlet 51 can be connected to the water inlet 121, and the water entering from the inlet 51 can enter the filter element 100 through the water inlet 121 for filtration.

[0132] Furthermore, if Figure 1 As shown, the slide rail 53 protrudes from the inner circumferential wall of the socket 20, and the slide rail 53 is spaced apart from the inner bottom wall of the socket 5 to define a accommodating space. The slide rib 127 protrudes from the outer circumferential wall of the shell, and the slide rib 127 is suitable for being located in the accommodating space. Along the rotation direction of the socket 5 when it is installed, the surface of the slide rib 127 that is away from the inner bottom wall of the socket 5 is inclined toward a direction away from the inner bottom wall of the socket 5. During the installation of the socket 5 and the filter element 100, the socket 5 and the filter element 100 are aligned, that is, one end of the sliding bar 127 is aligned with the opening of the accommodating space, and then the socket 5 is rotated. During the rotation of the socket 5, the sliding bar 127 gradually enters the accommodating space, and along the rotation direction of the socket 5 when it is installed, since the surface of the sliding bar 127 that is away from the inner bottom wall of the socket 5 is inclined toward the direction away from the inner bottom wall of the socket 5, during the rotation of the socket 5 relative to the filter element 100, the socket 5 gradually moves toward the filter element 100, so that the top rod 32 moves with the socket 5 toward the filter element 100, and then stops with the water stop pad 3. After the socket 5 and the filter element 100 are installed, ensure that the water inlet 121 is opened, the inlet 51 can be connected with the water inlet 121, and the water entering from the inlet 51 can enter the filter element 100 through the water inlet 121 for filtration.

[0133] Reference below Figures 1 to 29 A filter element assembly 200 according to a specific embodiment of the present invention is described. It is worth noting that the following description is merely exemplary and is intended to be used to explain the present invention, but is not to be construed as limiting the present invention.

[0134] Specifically, Figures 1 to 29 As shown, the filter element assembly 200 includes: a socket 5, a filter element 100 and a push rod 32.

[0135] Furthermore, the socket 5 is provided with an inlet 51 and an outlet 52, and the filter element 100 is detachably connected to the socket 5. The filter element 100 comprises: a housing 1, a filter material box 2, a water stop pad 3 and an elastic member 4. The housing 1 comprises a filter element lower shell 11 and a filter element upper cover 12, the filter element lower shell 11 is threadedly connected or welded to the filter element upper cover 12, and an axial end of the filter element upper cover 12 has a water inlet 121 and a water outlet 122, the water inlet 121 is three spaced apart along the circumferential direction of the housing 1 and is connected to the inlet 51, and the water outlet 122 is arranged at the center of the housing 1 and is connected to the outlet 52. The filter element upper cover 12 has an inwardly extending extension 123, and a connecting channel 124 is provided in the extension 123, and the connecting channel 124 is connected to the water outlet 122, and a one-way valve 125 is provided in the connecting channel 124 to allow liquid to flow to only one end of the water outlet 122.

[0136] Furthermore, the inner circumferential wall of the end of the filter element lower shell 11 away from the water inlet 121 is provided with fixing ribs 111, and the fixing ribs 111 are six and spaced apart along the circumferential direction of the shell 1. The filter box 2 is located in the space defined by the six fixing ribs 111. The filter box 2 is provided with filter material, and the liquid entering the filter box 2 can be filtered and purified. The outer circumferential wall of the filter box 2 and the shell 1 jointly define a water inlet channel 13, and a water outlet channel 23 is defined in the filter box 2. The water inlet channel 13 is connected with the water inlet 121, and the water outlet channel 23 is connected with the water outlet 122 through a connecting channel 124.

[0137] Furthermore, the filter box 2 includes a filter box upper cover 21 and a filter box lower shell 22. The end of the filter box upper cover 21 facing away from the water-stop pad 3 is open, and the end of the filter box lower shell 22 close to the water-stop pad 3 extends into the filter box upper cover 21. The outer peripheral wall of the filter box lower shell 22 has a limiting rib 221 extending along the circumferential direction of the filter box lower shell 22. The end of the filter box upper cover 21 facing away from the water-stop pad 3 is supported on the limiting rib 221, which can facilitate the production and processing of the filter element 100 and facilitate the loading of filter material.

[0138] Furthermore, a positioning protrusion 211 is provided on the end face of the filter box upper cover 21 facing the water inlet 121. There are four positioning protrusions 211 that are arranged at intervals and extend along the circumferential direction of the filter box 2. The end of the elastic member 4 away from the water inlet 121 is located in the space defined by the positioning protrusion 211. The setting of the positioning protrusion 211 can limit the elastic member 4, prevent the elastic member 4 from moving in the radial direction, and improve the structural stability.

[0139] In addition, a support rib 212 is provided on the end face of the filter box 2 facing the water inlet 121. The support ribs 212 are located in the space defined by the positioning protrusion 211 and are eight in number and spaced apart along the circumferential direction of the filter box 2. Each support rib 212 extends in the radial direction of the filter box 2. The end of the elastic member 4 facing away from the water inlet 121 has a first positioning section 41. Along the axial direction of the shell 1, 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 and the support rib 212. 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 4 and the positioning protrusion 211, enhance the limiting effect of the positioning protrusion 211 on the elastic member 4, and improve the structural stability.

[0140] Furthermore, along the axial direction of the shell 1, the height of the first positioning section 41 is H1, the height of the positioning protrusion 211 is H2, and the height of the support rib 212 is H5, and it satisfies: H2-H5>H1, which can ensure sufficient blocking height while supporting the elastic member 4, preventing the first positioning section 41 from escaping from the space defined by the positioning protrusion 211 and the support rib 212, thereby ensuring the stability of the water stop pad 3 in blocking the water inlet 121.

[0141] In addition, the water stop pad 3 is a silicone rubber part, an EPDM rubber part, a NBR rubber part, or a fluororubber part. The water stop pad 3 is arranged in the shell 1 and is located between the filter box 2 and the water inlet 121. The side of the water stop pad 3 facing the filter box 2 has a positioning groove 31. The positioning groove 31 extends in a ring shape along the circumferential direction of the water stop pad 3. The end of the elastic part 4 away from the filter box 2 is located in the positioning groove 31 to drive the water stop pad 3 to block the water inlet 121. The setting of the positioning groove 31 can limit the end of the elastic part 4 away from the filter box 2, thereby preventing the elastic part 4 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 3 blocking the water inlet 121.

[0142] Furthermore, the end of the elastic member 4 away from the filter box 2 has a second positioning section 42. Along the axial direction of the shell 1, 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 the inner wall of the positioning groove 31, which can increase the contact area between the elastic member 4 and the positioning groove 31, enhance the limiting effect of the positioning groove 31 on the elastic member 4, and improve the structural stability.

[0143] Furthermore, along the axial direction of the shell 1, the height of the second positioning section 42 is H3, the depth of the positioning groove 31 is H4, and satisfies: H4>H3, which 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 4 and the positioning groove 31, thereby ensuring the stability of the water stop pad 3 in blocking the water inlet 121.

[0144] In addition, along the axial direction of the shell 1, both end faces of the elastic member 4 are flat, which can increase the contact area between the elastic member 4 and the water stop pad 3 and the filter box 2, and further avoid radial deviation of the elastic member 4, thereby ensuring that the water stop pad 3 will not produce radial movement, thereby ensuring the reliability of the water stop pad 3 in blocking the water inlet 121.

[0145] In addition, the elastic member 4 is a spring and the outer contour dimension of the elastic member 4 near the filter box 2 is larger than the outer contour dimension of the elastic member 4 near the water stop pad 3, which can improve the stability of the elastic member 4 and avoid the axis of the elastic member 4 near the filter box 2 being inconsistent with the axis of the elastic member 4 near the water stop pad 3.

[0146] Furthermore, a through hole 126 is provided on the shell 1, and a push rod 32 is inserted into the through hole 126. One end of the push rod 32 is connected to the water stop pad 3, and the other end is suitable for abutting against the connecting seat 5. When the connecting seat 5 and the filter element 100 are installed, the connecting seat 5 moves toward the filter element 100 relative to the filter element 100, and the push rod 32 drives the water stop pad 3 to be spaced apart from the water inlet 121 to open the water inlet 121.

[0147] When the filter element 100 is matched with the socket 5, the inner surface of the socket 5 contacts the push rod 32 and pushes the push rod 32 to move in the direction close to the filter box 2, thereby indirectly pushing the water stop pad 3 to move in the direction close to the filter box 2 through the push rod 32, so that the water stop pad 3 opens the water inlet 121, and then the liquid flowing in from the inlet 51 can 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 2, and finally flow out from the outlet 52 through the water outlet 122; when the filter element 100 and the socket 5 are released, When the filter element 100 is engaged, the socket 5 moves in the direction away from the filter element 100, and the pressure exerted by the socket 5 on the top rod 32 gradually decreases until it disappears. Under the action of the elastic member 4, the elastic member 4 drives the water stop pad 3 to move in the direction close to the water inlet 121 so that the water stop pad 3 is pressed against the water inlet 121, thereby sealing the water inlet 121, ensuring the sealing of the filter element 100, and preventing residual water inside the filter element 100 from leaking from the water inlet 121, which can improve the user's experience, prevent residual water from wetting the user's clothes and the ground, and reduce safety hazards and the user's workload.

[0148] In addition, a valve assembly 6 is provided in the socket 5, and the valve assembly 6 has a conducting state and a blocking state. After the filter element 100 is assembled with the socket 5, the valve assembly 6 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; after the filter element 100 is separated from the socket 5, the valve assembly 6 is in the blocking state, the water inlet 121 is isolated from the inlet 51, and the water outlet 122 is isolated from the outlet 52.

[0149] It is understandable that if the filter element 100 needs to be replaced, the water valve in the home needs to be closed first. However, by controlling the valve assembly 6 in the socket 5 to be in a cut-off state, the water inlet 121 and the inlet 51 as well as the water outlet 122 and the outlet 52 can be controlled to be isolated, so that the water flow in the filter element assembly 200 is blocked, preventing water leakage when the filter element 100 is removed, thereby achieving the replacement of the filter element 100 without closing the water valve, with simple steps and convenient operation.

[0150] Further, after the filter element 100 is installed, the filter element 100 contacts and cooperates with the valve assembly 6, so that the valve assembly 6 switches from the cut-off state to the on state, so that water can flow to the filter element 100 for filtration. When the filter element 100 is removed, the filter element 100 is separated from the valve assembly 6, so that the valve assembly 6 switches from the on state to the cut-off state, thereby preventing water leakage when the filter element 100 is removed. In this way, the valve assembly 6 switches between the on and off states automatically, without manual operation, and simplifies the installation steps.

[0151] Furthermore, in the on state, the inlet 51 is separated from the outlet 52, thereby preventing the water in the inlet 51 and the outlet 52 from mixing and reducing the filtering effect; in the off state, the inlet 51 is connected to the outlet 52, thereby, the water from the inlet 51 cannot flow to the filter element 100, so that the water can flow directly from the inlet 51 to the outlet 52, preventing excessive water pressure from causing structural damage.

[0152] The present invention also provides a water heater 300 having the above embodiment.

[0153] According to some embodiments of the present invention, as shown in the attached Fig.19 and attached Fig. 20 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, refer to the attached Fig.19 and attached Fig. 20 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.19 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. 20 As 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] According to the water heater 300 of the embodiment of the present invention, by providing the above-mentioned filter element assembly 200, by providing an elastic member 4 to drive the water stop pad 3 to block the water inlet 121, after the filter element 100 is assembled or the filter element 100 is released from the socket 5, the elastic force generated by the deformation of the elastic member 4 acts on the water stop pad 3, driving the water stop pad 3 to move in the direction close to the water inlet 121, so that the water stop pad 3 is pressed against the water inlet 121 after deformation, ensuring the sealing of the filter element 100, preventing the residual water inside the filter element 100 from leaking from the water inlet 121, improving the user's experience, preventing the residual water from wetting the user's clothes and the ground, reducing safety hazards and the user's labor. In addition, by arranging the end of the elastic member 4 away from the water stop pad 3 in the space defined by the positioning protrusion 211, the elastic member 4 can be limited, preventing the elastic member 4 from moving in the radial direction, improving the structural stability, and thus ensuring the reliability of the water stop pad 3 blocking the water inlet 121.

[0161] Other structures and operations of the filter element 100, 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.

[0162] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0163] 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, characterized in that: include: A shell, wherein one axial end of the shell has a water inlet and a water outlet; A filter material box, the filter material box is arranged in the shell, the filter material box and the shell together define a water inlet channel and a water outlet channel that are connected to each other, the water inlet channel is connected to the water inlet, and the water outlet channel is connected to the water outlet; A water-stopping pad, which is arranged in the housing and between the filter box and the water inlet; an elastic member, the elastic member being arranged in the housing and between the filter box and the water-stopping pad to drive the water-stopping pad to block the water inlet, Among them, the side of the filter box facing the water inlet has a positioning protrusion and a supporting rib, the positioning protrusion is a plurality of protrusions arranged at intervals along the circumferential direction of the filter box, or the positioning protrusion extends in a ring shape along the circumferential direction of the filter box, and the end of the elastic member away from the water stop pad is stopped against the supporting rib and is located in the space defined by the positioning protrusion.

2. The filter element according to claim 1, characterized in that: When the positioning protrusions are multiple and spaced apart along the circumferential direction of the shell, each positioning protrusion extends along the circumferential direction of the filter box.

3. The filter element according to claim 1, characterized in that: The elastic member has a first positioning section at one end facing away from the water inlet. The shape and size of the outer contour of the first positioning section remain unchanged along the axial direction of the shell. The first positioning section is located in the space defined by the positioning protrusion.

4. The filter element according to claim 3, characterized in that: Along the axial direction of the housing, the height of the first positioning section is H1, the height of the positioning protrusion is H2, and the relationship H2>H1 is satisfied.

5. The filter element according to claim 1, characterized in that: A side of the water stop pad facing the filter box is provided with a positioning groove, and an end of the elastic member away from the filter box is located in the positioning groove.

6. The filter element according to claim 5, characterized in that: The elastic member has a second positioning section at one end away from the filter box. Along the axial direction of the shell, the shape and size of the outer contour of the second positioning section remain unchanged, and the second positioning section is located in the positioning groove.

7. The filter element according to claim 6, characterized in that: Along the axial direction of the housing, the height of the second positioning section is H3, the depth of the positioning groove is H4, and the relationship H4>H3 is satisfied.

8. The filter element according to claim 1, characterized in that: Along the axial direction of the housing, at least one of the two end surfaces of the elastic member is a plane.

9. The filter element according to claim 1, characterized in that: The outer contour dimension of one end of the elastic member close to the filter material box is larger than the outer contour dimension of one end of the elastic member close to the water stop pad.

10. The filter element according to claim 1, characterized in that: The elastic member is a spring.

11. The filter element according to claim 1, characterized in that: The water stop pad is a silicone rubber part, an EPDM rubber part, a NBR rubber part, or a fluororubber part.

12. The filter element according to claim 1, 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.

13. The filter element 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.

14. The filter element according to claim 1, characterized in that: The outer peripheral wall of the filter box and the shell together define the water inlet channel, and the filter box defines a water outlet channel.

15. The filter element according to claim 14, 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 in it, and the connecting channel is communicated with the water outlet channel and the water outlet.

16. The filter element according to claim 15, characterized in that A one-way valve is arranged in the connecting channel to only allow liquid to flow from the water outlet channel to the water outlet.

17. The filter element according to claim 1, characterized in that The housing comprises: A filter element lower shell, wherein at least a portion of the filter material box is located in the filter element lower shell; The filter element upper cover is connected to the filter element lower shell, and the water inlet and the water outlet are both arranged on the filter element upper cover.

18. The filter element according to claim 17, characterized in that The filter element lower shell is threadedly connected or welded to the filter element upper cover.

19. The filter element according to claim 1, characterized in that The filter material box comprises: The filter box upper cover, the positioning protrusion is arranged on the end surface of the filter box upper cover facing the water inlet, and the end of the filter box upper cover facing away from the water stop pad is open; The filter box lower shell has one end close to the water stop pad extending into the filter box upper cover.

20. The filter element according to claim 19, 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 away from the water stop pad is supported on the limiting ribs.

21. A filter element assembly, characterized in that: include: A socket, wherein the socket is provided with an inlet and an outlet; The filter element according to any one of claims 1 to 20, wherein the filter element is detachably connected to the socket, the water inlet is adapted to communicate with the inlet, the water outlet is adapted to communicate with the outlet, and the housing is further provided with a through hole; A push rod, the push rod is inserted into the through hole, one end of the push rod is connected to one of the socket and the water stop pad, and the other end is suitable for abutting against the other of the socket and the water stop pad. When the receiving seat and the filter element are installed, the receiving seat moves relative to the filter element toward the filter element, and the push rod drives the water stop pad to be spaced apart from the water inlet to open the water inlet.

22. The filter element assembly according to claim 21, 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.

23. The filter element assembly according to claim 22, 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.

24. The filter element assembly according to claim 22, 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.

25. A water heater, characterized in that: A filter element assembly comprising any one of claims 21-24.

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