Filter cartridges, filtration components, water purifiers

Abstract

This utility model provides a filter element, a filter assembly, and a water purifier. The filter element can be installed on the connector of the filter assembly. The connector includes a third interface piece and a fourth interface piece. The filter element includes: a housing comprising a first interface piece and a second interface piece, wherein the first interface piece is connected to and fluidly communicates with the third interface piece, and the second interface piece is connected to and fluidly communicates with the fourth interface piece; a filter element is disposed within the housing, and an inlet channel or an outlet channel is provided between the filter element and the housing, wherein one of the inlet channel and the outlet channel communicates with the first interface piece, and the other of the inlet channel and the outlet channel communicates with the second interface piece; a sealing member is disposed on the outer periphery of the first interface piece, and when the filter element is installed on the connector, the sealing member is sealed to the third interface piece and forms a sealing surface with the third interface piece, wherein at least one cross-section of the sealing surface is non-circular. The technical solution of this application can effectively solve the problem of users easily misconnecting filter elements and connectors in related technologies.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and more specifically, to a filter element, a filter assembly, and a water purifier. Background Technology

[0002] Filter systems are typically used to filter water to produce clean water. The most important component of a filter system is the filter assembly, which enables the system to perform its filtration function. The filter assembly usually includes a connector and a filter element. Since filter elements typically have a limited lifespan, they need to be replaced when they fail to maintain filtration capacity. The connector is the connection structure that links the filter element to other parts of the filter system.

[0003] Typically, different connectors connect to the ends of different water channels, which are then connected to their respective filter cartridges via these connectors. Currently, the inlet and outlet components of filter cartridges use a circular tube structure, which can align with the circular holes of the connectors. However, this can easily lead users to mistakenly connect incompatible filter cartridges to the wrong connectors. Utility Model Content

[0004] The main purpose of this utility model is to provide a filter element, a filter assembly, and a water purifier to solve the problem that users are prone to misconnecting filter elements and connectors in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a filter element is provided, which can be installed in a connector of a filter assembly. The connector includes a third interface member and a fourth interface member. The filter element includes: a housing, including a first interface member and a second interface member, wherein the first interface member is connected to and fluidly communicates with the third interface member, and the second interface member is connected to and fluidly communicates with the fourth interface member; a filter element, disposed within the housing, wherein the filter element has an inlet channel or an outlet channel between itself and the housing, one of the inlet channel and the outlet channel is connected to the first interface member, and the other of the inlet channel and the outlet channel is connected to the second interface member; and a sealing member, disposed on the outer periphery of the first interface member, wherein when the filter element is installed on the connector, the sealing member is sealed to the third interface member and forms a sealing surface with the third interface member, wherein at least one cross-section of the sealing surface is non-circular.

[0006] Furthermore, at least one cross-section of the sealing surface is elliptical, quasi-elliptical, or polygonal.

[0007] Furthermore, the first interface component is cylindrical, and at least one cross-section of the first interface component is elliptical, quasi-elliptical, or polygonal in shape.

[0008] Furthermore, when the filter element is installed on the connector, the first interface piece is inserted into the third interface piece, and the sealing element is disposed between the outer wall of the first interface piece and the inner wall of the third interface piece.

[0009] Furthermore, the first interface component and the housing are rotatably configured relative to each other.

[0010] Furthermore, the outer shell also includes a shell body and a connecting part. The filter element is disposed inside the shell body. The first interface piece and the second interface piece are disposed at intervals inside the connecting part. The connecting part is disposed at the first end of the shell body. At least part of the connecting part can extend into the connecting cavity of the connector. The central axis of the first interface piece coincides with the central axis of the filter element. The first interface piece can rotate relative to the shell body around the central axis of the first interface piece.

[0011] Furthermore, a mounting base is provided on the shell body, the mounting base includes a first limiting member and a second limiting member, the first interface member is rotatably disposed between the first limiting member and the second limiting member, the first limiting member and the second limiting member cooperate with each other to limit the axial displacement of the first interface member; the first limiting member and the first interface member are sealed together, and / or the second limiting member and the first interface member are sealed together.

[0012] Furthermore, a first stop protrusion is provided on the inner side of the second limiting member, and a second stop protrusion is provided on the outer side of the first interface member. The first stop protrusion and the second stop protrusion cooperate to restrict the relative rotation between the outer shell and the first interface member.

[0013] Furthermore, the second limiting member has a protrusion at the end away from the shell body. When the protrusion triggers the fourth interface member, the second interface member and the fourth interface member are connected. When the protrusion and the fourth interface member are misaligned, the second interface member and the fourth interface member are blocked.

[0014] Furthermore, a locking structure is provided between the housing and the connector. The housing is rotatably disposed relative to the connector. The locking structure has a locked state and an unlocked state. Rotation of the housing causes the locking structure to switch between the locked state and the unlocked state. When the locking structure is in the locked state, the housing and the connector are locked together. When the locking structure is in the unlocked state, the housing can be separated from the connector.

[0015] According to another aspect of the present invention, a filter assembly is provided, including filter elements that can be mated together and a filter element connector that can be detachably installed on a connector, wherein the filter elements are the filter elements described above.

[0016] Furthermore, the third interface component of the connector is installed in conjunction with the first interface component of the filter element, and the outer surface of the seal of the filter element abuts against the inner wall surface of the third interface component, with the shape of the outer surface of the seal component matching the shape of the inner wall surface of the third interface component.

[0017] According to another aspect of the present invention, a water purifier is provided, including a main unit and a filter assembly installed on the main unit, wherein the filter assembly is the filter assembly described above.

[0018] Furthermore, the main unit is provided with an installation cavity, in which the filter element of the filter assembly is installed. The installation cavity is provided with a water delivery path and a touch switch. The touch switch is located on the water delivery path, which is connected to the third or fourth interface of the filter assembly's connector. The filter element can trigger the touch switch to connect the water delivery path to the third interface or the fourth interface.

[0019] Applying the technical solution of this utility model, the outer shell is used for other structures including the filter element and also provides an installation base for other structures; the filter element is disposed inside the outer shell to realize the filtration function; there is an inlet channel and an outlet channel between the filter element and the outer shell, one of the inlet channel and the outlet channel is connected to the first interface piece, and the other of the inlet channel and the outlet channel is connected to the second interface piece, while the first interface piece is connected to the third interface piece of the connector, and the second interface piece is connected to the fourth interface piece of the connector, thereby forming a water path from the third interface piece, the first interface piece, the inlet channel, the filter element, the outlet channel, the second interface piece to the fourth interface piece, or the fourth interface piece, the second interface piece, and the inlet channel. The present invention comprises a filter element, a water outlet channel, and a water passage from a first interface to a third interface. A seal is disposed on the outer periphery of the first interface, sealing between the first and third interface to prevent liquid leakage between them, thereby ensuring the seal between the connector and the filter element. Since a sealing surface is formed between the seal and the third interface, at least one cross-section of the sealing surface is non-circular. This ensures the sealing effect of the sealing surface and, compared to solutions using circular pipes for connection in related fields, provides a foolproof design, allowing the matching seal and the third interface to directly connect, thus ensuring the connection of the corresponding filter element and connector. Simultaneously, the first interface and the outer shell are rotatable, allowing the filter element to be installed by rotating it even with a non-circular sealing surface, ensuring reliable installation of the filter element on the connector. Therefore, the technical solution of this application effectively solves the problem of users easily misconnecting filter elements and connectors in related technologies. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A perspective structural schematic diagram of an embodiment of the filter assembly according to the present invention is shown;

[0022] Figure 2 It shows Figure 1 A side view of the filtering component;

[0023] Figure 3 It shows Figure 1 A cross-sectional view of the filtering component;

[0024] Figure 4 It shows Figure 3 An enlarged schematic diagram of point A of the filter component;

[0025] Figure 5 It shows Figure 1 A three-dimensional structural diagram of a portion of the filter assembly;

[0026] Figure 6 It shows Figure 1 A three-dimensional structural diagram of another part of the filter assembly;

[0027] Figure 7 A three-dimensional structural diagram of a portion of the structure of an embodiment of the water purifier according to the present invention is shown.

[0028] The above figures include the following reference numerals:

[0029] 1. Connector; 101. Third interface component; 102. Fourth interface component; 103. Connecting cavity; 104. Third check valve; 105. Push rod structure;

[0030] 10. Outer shell; 11. First interface component; 111. Conductor tube; 112. Second check valve; 12. Second interface component; 121. Conductor hole; 13. Shell body; 14. Connecting part; 15. Mounting base; 151. First limiting component; 152. Second limiting component; 153. Protrusion;

[0031] 20. Filter element; 21. Water inlet channel; 22. Water outlet channel; 23. Tubular filter element;

[0032] 30. Seal; 31. Sealing surface;

[0033] 40. Locking structure; 41. Stop flange; 42. Stop boss;

[0034] 51. First sealing ring; 52. Second sealing ring; 53. Second stop protrusion; 54. Handle structure; 55. First check valve;

[0035] 61. Mounting cavity; 62. Touch switch; 63. Protrusion. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] like Figures 1 to 4As shown, this application provides a filter element for a filter assembly, used to connect with a connector 1 of the filter assembly. An embodiment of the filter element of this application includes: a housing 10, a filter element 20, and a sealing member 30. The housing 10 includes a first interface member 11 and a second interface member 12. The first interface member 11 connects to and is fluidly connected to a third interface member 101 of the connector 1, and the second interface member 12 connects to and is fluidly connected to a fourth interface member 102 of the connector 1. The filter element 20 is disposed within the housing 10, and an inlet channel 21 and an outlet channel 22 are provided between the filter element 20 and the housing 10. One of the inlet channel 21 and the outlet channel 22 communicates with the first interface member 11, and the other of the inlet channel 21 and the outlet channel 22 communicates with the second interface member 12. The sealing member 30 is disposed on the outer periphery of the first interface member 11. When the filter element is installed on the connector 1, the sealing member 30 is sealed to the third interface member 101 and forms a sealing surface 31 with the third interface member 101. At least one cross-section of the sealing surface 31 is non-circular.

[0040] Applying the technical solution of this embodiment, the outer casing 10 is used for other structures including the filter element and also provides an installation base for other structures; the filter element 20 is disposed inside the outer casing 10 to realize the filtration function; there is a water inlet channel 21 and a water outlet channel 22 between the filter element 20 and the outer casing 10, one of the water inlet channel 21 and the water outlet channel 22 is connected to the first interface member 11, and the other of the water inlet channel 21 and the water outlet channel 22 is connected to the second interface member 12, while the first interface member 11 is connected to the third interface member 101 of the connector 1, and the second interface member 12 is connected to the fourth interface member 102 of the connector 1, thereby forming a water path from the third interface member 101, the first interface member 11, the water inlet channel, the filter element 20, the water outlet channel, the second interface member 12 to the fourth interface member 102, or the fourth interface member 102 and the second interface member 102. 12. A water inlet channel, a filter element 20, a water outlet channel, and a water path from the first interface 11 to the third interface 101; a sealing element 30 is disposed on the outer periphery of the first interface 11, sealing between the first interface 11 and the third interface 101 to prevent liquid leakage between them, thereby ensuring the sealing performance between the connector and the filter element; since a sealing surface 31 is formed between the sealing element 30 and the third interface 101, and at least one cross-section of the sealing surface 31 is non-circular, on the one hand, the sealing effect of the sealing surface 31 can be guaranteed, and on the other hand, compared with the solution using a circular pipe for connection in related fields, the non-circular sealing surface 31 can play a foolproof role, allowing the matching sealing element 30 and the third interface 101 to be directly connected, thereby ensuring that the corresponding filter element and connector can be connected. Therefore, the technical solution of this embodiment can effectively solve the problem of users easily misconnecting filter elements and connectors in related technologies.

[0041] Furthermore, the filter element is a consumable unit, while the connector is a non-consumable unit; during use, users often need to replace the filter element to ensure a good filtration effect. In this embodiment, the connection between the connector and an incompatible filter element is avoided, thus ensuring that the filter system can perform as ideally as designed, thereby guaranteeing a better user experience.

[0042] Furthermore, at least one cross-section of the sealing surface 31 is elliptical, quasi-elliptical, or polygonal. Specifically, polygons may include triangles, regular polygons, and polygons with smooth transitions at their vertices. Quasi-elliptical shapes are a series of shapes that are similar to ellipses but are not strictly elliptical. Designers can design the shape of the cross-section of the sealing surface 31 as needed.

[0043] Furthermore, when the filter element is installed on the connector 1, the first interface piece 11 is inserted into the third interface piece 101, and the sealing member 30 is disposed between the outer wall of the first interface piece 11 and the inner wall of the third interface piece 101, thereby realizing the sealing function of the sealing member 30.

[0044] Preferably, the first interface member 11 is cylindrical, and at least one cross-section of the first interface member 11 is elliptical, quasi-elliptical, or polygonal.

[0045] Since the cross-section of the first interface member 11 is a non-circular structure and the seal member 30 itself is an elastic structure, when the seal member 30 is installed on the first interface member 11, the elastic material of the seal member 30 fits against the outer wall surface of the first interface member 11 to form the same non-circular cross-section as the first interface member 11. That is, the seal member 30 itself can be a circular cross-section, which forms a non-circular sealing surface 31 when installed on the first interface member 11, or it can be a state in which it itself has a non-circular cross-section, thereby ensuring that the sealing surface 31 can form a good sealing effect between the first interface member 11 and the third interface member 101.

[0046] Furthermore, the first interface component 11 and the outer casing 10 are rotatably mounted relative to each other. This relative rotatability allows the filter element to be installed even when the sealing surface 31 is not circular, ensuring the reliability of the filter element installation on the connector.

[0047] like Figures 1 to 4As shown, a locking structure 40 is provided between the outer shell 10 and the connector 1. The outer shell 10 is rotatably disposed relative to the connector 1. The locking structure 40 has a locked state and an unlocked state. Rotation of the outer shell 10 causes the locking structure 40 to switch between the locked and unlocked states. When the locking structure 40 is in the locked state, the outer shell 10 and the connector 1 are locked and locked together. When the locking structure 40 is in the unlocked state, the outer shell 10 can be separated from the connector 1. Specifically, the locking structure 40 can ensure a stable connection between the connector 1 and the filter element, and can also realize the separation between the connector 1 and the filter element. Rotation of the outer shell 10 causes the locking structure 40 to switch between the locked and unlocked states, thereby realizing the connection and separation of the filter element and the connector 1.

[0048] like Figures 1 to 4 As shown, the outer casing 10 also includes a casing body 13 and a connecting portion 14. The filter element 20 is disposed inside the casing body 13. The first interface member 11 and the second interface member 12 are spaced apart and disposed inside the connecting portion 14. The connecting portion 14 is disposed at the first end of the casing body 13. The connecting portion 14 can at least partially extend into the connecting cavity 103 of the connector 1. The locking structure 40 includes a stop flange 41 and a stop boss 42. The stop flange 41 is disposed at the end of the connecting portion 14, and the stop boss 42 is disposed on the inner wall of the connecting cavity 103. When the locking structure 40 is in the locked state, the stop flange 41 is located on the side of the stop boss 42 away from the filter element 20 and stops and cooperates with the stop boss 42. When the locking structure 40 is in the unlocked state, the stop flange 41 and the stop boss 42 are misaligned. Specifically, the inner wall of the connecting cavity 103 and the connecting part 14 are spaced apart to avoid the stop flange 41. The stop boss 42 is provided on the inner wall of the connecting cavity 103. By rotating the outer shell 10, the stop flange 41 and the stop boss 42 can be engaged or misaligned. When the locking structure 40 is switched to the locked state, the stop flange 41 is located on the side of the stop boss 42 away from the filter element 20 and engages with the stop boss 42, so that the connecting part 14 will not be disengaged from the connecting cavity 103. When the locking structure 40 is switched to the unlocked state, the stop flange 41 and the stop boss 42 are misaligned, so that the stop flange 41 can exit the connecting cavity 103 from the gap between the inner wall of the connecting cavity 103 and the connecting part 14.

[0049] In addition, the first interface member 11 and the second interface member 12 are both disposed on the end face of the first end of the housing body 13; specifically, this arrangement can reduce the size of the housing 10 in the lateral direction, thereby making it easier to install the filter element.

[0050] like Figures 1 to 4As shown, a mounting base 15 is provided on the shell body 13, and a first interface piece 11 is disposed within the mounting base 15. The first interface piece 11 and the mounting base 15 are rotatable relative to each other. Specifically, since at least one cross-section of the sealing surface 31 is non-circular, after the first interface piece 11 and the third interface piece 101 are mated, relative rotation between the first interface piece 11 and the third interface piece 101 is impossible. However, the shell 10 is rotatable, allowing the first interface piece 11 to be disposed within the mounting base 15. The central axis of the first interface piece 11 coincides with the central axis of the filter element, and the first interface piece 11 can rotate relative to the mounting base 15 around its central axis, thereby preventing any contact between the rotation of the shell 10 and the first interface piece 11.

[0051] like Figure 4 As shown, the mounting base 15 includes a first limiting member 151 and a second limiting member 152. A first interface member 11 is disposed between the first limiting member 151 and the second limiting member 152. A first sealing ring 51 is provided between the first limiting member 151 and the first interface member 11, and / or a second sealing ring 52 is provided between the second limiting member 152 and the first interface member 11. Specifically, an installation space for mounting the first interface member 11 is formed between the first limiting member 151 and the second limiting member 152. The arrangement of the first sealing ring 51 and the second sealing ring 52 can ensure the sealing between the first limiting member 151 and the first interface member 11, as well as the sealing between the second limiting member 152 and the first interface member 11.

[0052] like Figure 6 As shown, a first stop protrusion is provided on the inner side of the second limiting member 152, and a second stop protrusion 53 is provided on the outer side of the first interface member 11. When the locking structure 40 is in the locked state, the first stop protrusion and the second stop protrusion 53 cooperate to restrict the rotation of the outer shell 10. Specifically, the rotation stroke of the outer shell 10 is limited by the cooperation of the first stop protrusion and the second stop protrusion 53. When the locking structure 40 is switched to the locked state, the first stop protrusion and the second stop protrusion 53 cooperate, and the outer shell 10 cannot continue to rotate, thereby ensuring that the stop flange 41 rotates to the side of the stop protrusion 42 away from the filter element 20 and cooperates with the stop protrusion 42.

[0053] like Figures 1 to 3 As shown, a handle structure 54 is provided on the second end of the shell body 13. Specifically, the user can rotate the shell 10 through the handle structure 54, thereby providing the user with a better experience.

[0054] like Figure 5As shown, the second limiting member 152 has a protrusion 153 at the end away from the shell body 13. When the locking structure 40 is in the locked state, the protrusion 153 triggers the fourth interface member 102, so that the second interface member 12 and the fourth interface member 102 are connected. When the locking structure 40 is in the unlocked state, the protrusion 153 and the fourth interface member 102 are separated, thereby blocking the second interface member 12 and the fourth interface member 102. Specifically, the fourth interface 102 includes a water guiding channel and a third one-way valve 104 disposed within the water guiding channel. The water guiding channel is connected to the second interface 12. The third one-way valve 104 has a state of opening the water guiding channel and a state of blocking the water guiding channel. When the locking structure 40 is switched to the locked state, the protrusion 153 triggers the third one-way valve 104, so that the third one-way valve 104 is in the state of opening the water guiding channel, thereby connecting the second interface 12 and the fourth interface 102. When the locking structure 40 is in the unlocked state, the protrusion 153 triggers the third one-way valve 104, so that the third one-way valve 104 is in the state of blocking the water guiding channel, thereby blocking the second interface 12 and the fourth interface 102. Through the above settings, water will not leak out from the water guiding channel when the connector and the filter element are not connected.

[0055] like Figure 4 As shown, the first interface component 11 includes a guide pipe 111, and the second interface component 12 includes a guide hole 121. The guide hole 121 communicates with the water inlet channel 21, and a first one-way valve 55 is provided between the guide hole 121 and the water inlet channel 21 to restrict the flow of water from the water inlet channel 21 to the guide hole 121. Specifically, when the connector and the filter element are not connected, the first one-way valve 55 ensures that water will not leak out from the water inlet channel 21.

[0056] like Figure 4 As shown, a second one-way valve 112 is provided at the first interface component 11. When the first interface component 11 is connected to the third interface component 101, the second one-way valve 112 is triggered by the third interface component 101, so that the first interface component 11 and the third interface component 101 are connected. Specifically, the third interface component 101 includes a push rod structure 105. When the connector and the filter element are connected, the push rod structure 105 abuts against the second one-way valve 112, so that the first interface component 11 and the third interface component 101 are connected. When the connector and the filter element are not connected, the second one-way valve 112 blocks the first interface component 11 to ensure that water does not leak out from the first interface component 11.

[0057] like Figure 3As shown, the filter element 20 includes a cylindrical filter element 23. A water inlet channel 21 is formed between the outer surface of the cylindrical filter element 23 and the inner surface of the housing 10, and a water outlet channel 22 is formed on the inner surface of the cylindrical filter element 23. Specifically, the cylindrical filter element 23 can realize the filtration function. The first interface member 11 is located in the middle of the cross-section of the housing body 13 and communicates with the water outlet channel 22. The second interface member 12 is located on the outer periphery of the first interface member 11 and communicates with the water inlet channel 21 to form a complete water path.

[0058] This application also provides a filter assembly, which includes a filter element and a connector 1 that can be mated together, wherein the filter element is the aforementioned filter element. The aforementioned filter element effectively solves the problem in related technologies where users easily misconnect the filter element and connector, and the filter assembly having the aforementioned filter element also has the aforementioned advantages.

[0059] Furthermore, connector 1 includes a third interface member 101, which is fitted and installed in conjunction with the first interface member 11. The outer surface of the sealing member 30 abuts against the inner wall surface of the third interface member 101, and the shape of the outer surface of the sealing member 30 is adapted to the shape of the inner wall surface of the third interface member 101. This arrangement allows the outer surface of the sealing member 30 to fit well against the inner wall surface of the third interface member 101, thereby forming a sealing surface 31.

[0060] This application also provides a water purifier, which includes a main unit and a filter assembly installed on the main unit, wherein the filter assembly is the aforementioned filter assembly. The aforementioned filter assembly effectively solves the problem in related technologies where users easily misconnect filter cartridges and connectors, and the water purifier with the aforementioned filter assembly also has the aforementioned advantages.

[0061] like Figure 5 as well as Figure 7 As shown, the main unit has an installation cavity 61, and the filter element of the filter assembly is installed in the installation cavity 61. The installation cavity 61 has a water delivery path and a touch switch 62. The touch switch 62 is located on the water delivery path, which is connected to the third interface 101 or the fourth interface 102 of the connector 1 of the filter assembly. The filter element can trigger the touch switch 62 to connect the water delivery path to the third interface 101 or the fourth interface 102. Specifically, a protrusion 63 is provided on the outer surface of the housing body 13. When the filter element is installed in the installation cavity 61, the protrusion 63 can abut against the touch switch 62, thereby triggering the touch switch 62 and connecting the water delivery path to the fourth interface 102.

[0062] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter cartridge mountable on a joint (1) of a filter assembly, said joint (1) comprising a third interface member (101) and a fourth interface member (102), characterized in that, The filter element includes: The outer casing (10) includes a first interface (11) and a second interface (12), wherein the first interface (11) is connected to and fluidly communicates with the third interface (101), and the second interface (12) is connected to and fluidly communicates with the fourth interface (102); A filter element (20) is disposed inside the housing (10). The filter element (20) and the housing (10) have a water inlet channel (21) or a water outlet channel (22). One of the water inlet channel (21) and the water outlet channel (22) communicates with the first interface (11), and the other of the water inlet channel (21) and the water outlet channel (22) communicates with the second interface (12). A sealing element (30) is disposed on the outer periphery of the first interface element (11). When the filter element is installed on the connector (1), the sealing element (30) is sealed between the sealing element (30) and the third interface element (101) and forms a sealing surface (31) between the sealing element (30) and the third interface element (101). At least one cross-section of the sealing surface (31) is non-circular.

2. The filter cartridge of claim 1, wherein, At least one cross-section of the sealing surface (31) is elliptical, quasi-elliptical, or polygonal.

3. The filter cartridge of claim 1 wherein, The first interface component (11) is cylindrical, and at least one cross-section of the first interface component (11) is elliptical, quasi-elliptical, or polygonal.

4. The filter cartridge of claim 3, wherein, When the filter element is installed on the connector (1), the first interface piece (11) is inserted into the third interface piece (101), and the sealing member (30) is disposed between the outer wall of the first interface piece (11) and the inner wall of the third interface piece (101).

5. The filter cartridge of claim 1 wherein, The first interface component (11) and the outer shell (10) are rotatably disposed relative to each other.

6. The filter cartridge of claim 1, wherein, The outer shell (10) further includes a shell body (13) and a connecting part (14). The filter element (20) is disposed inside the shell body (13). The first interface piece (11) and the second interface piece (12) are disposed at intervals inside the connecting part (14). The connecting part (14) is disposed at the first end of the shell body (13). At least a portion of the connecting part (14) can extend into the connecting cavity (103) of the connector (1). The central axis of the first interface piece (11) coincides with the central axis of the filter element. The first interface piece (11) can rotate relative to the shell body (13) around the central axis of the first interface piece (11).

7. The filter cartridge of claim 6, wherein, The shell body (13) is provided with a mounting base (15), the mounting base (15) includes a first limiting member (151) and a second limiting member (152), the first interface member (11) is rotatably disposed between the first limiting member (151) and the second limiting member (152), the first limiting member (151) and the second limiting member (152) cooperate with each other to limit the axial displacement of the first interface member (11); the first limiting member (151) and the first interface member (11) are sealed together, and / or the second limiting member (152) and the first interface member (11) are sealed together.

8. The filter cartridge of claim 7, wherein, The inner side of the second limiting member (152) is provided with a first stop protrusion, and the outer side of the first interface member (11) is provided with a second stop protrusion (53). The first stop protrusion and the second stop protrusion (53) cooperate to restrict the relative rotation of the outer shell (10) and the first interface member (11).

9. The filter cartridge of claim 8, wherein, The second limiting member (152) has a protrusion (153) at the end away from the shell body (13). When the protrusion (153) triggers the fourth interface member (102), the second interface member (12) communicates with the fourth interface member (102). When the protrusion (153) and the fourth interface member (102) are misaligned, the second interface member (12) blocks the fourth interface member (102).

10. The filter cartridge of claim 1, wherein, A locking structure (40) is provided between the outer shell (10) and the connector (1). The outer shell (10) is rotatably disposed relative to the connector (1). The locking structure (40) has a locked state and an unlocked state. The outer shell (10) rotates to switch the locking structure (40) between the locked state and the unlocked state. When the locking structure (40) is in the locked state, the outer shell (10) is anti-detached from the connector (1). When the locking structure (40) is in the unlocked state, the outer shell (10) can be separated from the connector (1).

11. A filter assembly comprising a connector (1) and a filter element detachably mounted to said connector (1), characterized in that, The filter element is any one of claims 1 to 10.

12. The filter assembly of claim 11, wherein, The third interface (101) of the connector (1) is fitted with the first interface (11) of the filter element. The outer surface of the seal (30) of the filter element abuts against the inner wall of the third interface (101). The shape of the outer surface of the seal (30) is adapted to the shape of the inner wall of the third interface (101).

13. A water purifier comprising a main body and a filter assembly mounted on the main body, characterized in that, The filter assembly is the filter assembly described in claim 11 or 12.

14. The water purifier according to claim 13, wherein The host is provided with an installation cavity (61), and the filter element of the filter assembly is installed in the installation cavity (61). The installation cavity (61) is provided with a water conveying channel and a touch switch (62). The touch switch (62) is located on the water conveying channel. The water conveying channel is connected to the third interface (101) or the fourth interface (102) of the connector (1) of the filter assembly. The filter element can trigger the touch switch (62) so that the water conveying channel is connected to the third interface (101) or the water conveying channel is connected to the fourth interface (102).

Images