Composite filter element, water purifier

Abstract

The present invention relates to a composite filter element and a water purifier having the composite filter element. The composite filter element comprises an outer core assembly having an outer core water inlet; an inner core assembly inserted into the outer core assembly, the inner core assembly having an inner core water inlet, and the axes of the outer core water inlet and the inner core water inlet being non-parallel to the insertion direction of the inner core assembly into the outer core assembly. The composite filter element of the present invention allows for quick and convenient replacement of the inner core.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a composite filter element and a water purifier having the composite filter element. Background Art

[0002] Currently, water purifier filter media typically includes PP cotton, pre-mounted carbon rods, scale inhibitors, RO membranes, and post-mounted carbon. However, the lifespan of PP cotton, pre-mounted carbon, and post-mounted carbon is significantly shorter than that of RO membranes. Therefore, integrating these filter media into a composite filter cartridge results in wasted RO membranes due to the varying lifespans, leading to increased replacement costs.

[0003] To address this issue, the composite filter element is split into an inner core and an outer core. The inner core contains PP cotton, a pre-mounted carbon rod, and a post-mounted carbon rod, while the outer core contains a scale inhibitor or RO membrane. Since the inner core can be disassembled and replaced separately, either the inner core or the outer core can be replaced based on the lifespan of the filter media, balancing the lifespan differences of various filter media.

[0004] However, the installation method of the inner core of this composite filter element usually adopts threads, buckles, screws and other connections, which makes it difficult to replace the inner core, the replacement action is complicated, and it is not simple and convenient enough. Summary of the Invention

[0005] Based on this, the object of the present invention is to provide a composite filter element and a water purifier having the composite filter element, wherein the inner core of the composite filter element can be replaced quickly and conveniently.

[0006] A composite filter element, comprising:

[0007] An outer core assembly, the outer core assembly having an outer core water inlet;

[0008] An inner core component is inserted into the outer core component, and the inner core component has an inner core water inlet. The axis of the outer core water inlet and the axis of the inner core water inlet are not parallel to the insertion direction of the inner core component on the outer core component.

[0009] Compared with the prior art, the composite filter element of the present invention inserts the inner core component into the outer core component, and the outer core component limits the inner core component's X-axis displacement, Y-axis displacement, rotation around the X axis, and rotation around the Y axis. Then, the outer core water inlet of the outer core component and the inner core water inlet of the inner core component are plugged into the waterway plate of the water purifier. Since the axis of the outer core water inlet and the axis of the inner core water inlet are not parallel to the insertion direction of the inner core component on the outer core component, that is, the axis of the outer core water inlet and the axis of the inner core water inlet are not parallel to the Z axis of the inner core component, the waterway plate interface of the water purifier will limit the Z-axis displacement and the Z-axis rotation of the inner core component and the outer core component. It can be seen from this that the composite filter element structure designed in this way does not require the use of screw threads, buckles, screws and other connection methods to connect the inner core component and the outer core component. When the inner core assembly needs to be replaced, the composite filter element is directly removed from the water purifier, that is, the outer core water inlet of the outer core assembly and the inner core water inlet of the inner core assembly are separated from the water channel plate of the water purifier, and then the inner core assembly is directly pulled out from the outer core assembly to complete the disassembly of the inner core assembly. The entire inner core assembly is simple to load and unload, and the replacement action is simple.

[0010] Furthermore, the outer core water inlet and the inner core water inlet are located on the same side, and the axis of the outer core water inlet and the axis of the inner core water inlet are parallel to each other.

[0011] Furthermore, the axis of the outer core water inlet is perpendicular to the direction in which the inner core component is inserted into the outer core component; the axis of the inner core water inlet is perpendicular to the direction in which the inner core component is inserted into the outer core component.

[0012] Furthermore, a positioning groove and a positioning piece matched with the positioning groove are provided between the outer core component and the inner core component, and the outer core component and the inner core component are assembled and positioned by the cooperation of the positioning piece and the positioning groove.

[0013] Furthermore, the inner core water inlet constitutes the positioning member, the positioning groove is provided on the outer core assembly, and the inner core water inlet is mounted on the positioning groove; the outer core water inlet includes a clean water interface and a waste water interface; the inner core water inlet is located between the clean water interface and the waste water interface; the inner core water inlet includes a water inlet interface, a water outlet interface, and a pure water interface; the clean water interface and the waste water interface are located on the same side, and the axis of the clean water interface and the axis of the waste water interface are parallel to each other; the water inlet interface, the water outlet interface, and the pure water interface are located on the same side, and the axis of the water inlet interface, the axis of the water outlet interface, and the pure water interface are parallel to each other. The axes of the water interfaces are parallel to each other; the clean water interface, the waste water interface, the water inlet interface, the water outlet interface, and the pure water interface are located on the same side, and the axes of the clean water interface, the waste water interface, the water inlet interface, the water outlet interface, and the pure water interface are parallel to each other; the axes of the clean water interface, the waste water interface, the water inlet interface, the water outlet interface, and the pure water interface are all perpendicular to the insertion direction of the inner core component on the outer core component; at least one of the water inlet interface, the water outlet interface, and the pure water interface constitutes the positioning member.

[0014] Furthermore, the outer core assembly has a locking module for snap-connecting with an external component. When the outer core water inlet and the inner core water inlet are inserted into the external component, the locking module is snap-connected with the external component.

[0015] Furthermore, the outer core assembly includes an outer core body, a filter element handle, and the locking module. The filter element handle is rotatably connected to the outer core body, and the locking module is slidably arranged on the outer core body. Part of the locking module is located within the movable range of the filter element handle. When an external force pulls the filter element handle to rotate, the locking module is displaced under the drive of the filter element handle; the locking module slides vertically up and down on the outer core body; the sliding direction of the locking module is parallel to the rotation direction of the filter element handle; the locking module includes a locking member, which is slidably arranged on the outer core body. The filter element is fixed with a filter element and is secured to a position adjacent to the filter element when the filter element is in a closed position. The filter element is then released from the filter element and is secured to a position adjacent to the filter element when the filter element is in a closed position. The filter element is rotated by pulling the filter element handle with an external force, and the locking element is displaced by the driving force of the filter element handle. At the same time, the reset element is compressed or stretched, and the buckle portion is separated from the external component. After the external force disappears, the locking element is reset under the elastic force of the reset element. A sliding groove is provided on the outer core body, and the locking element slides in the sliding groove. The guiding direction of the sliding groove is parallel to the sliding direction of the locking element. A guide member is protruded on the inner wall of the sliding groove, and the guide member is located on one side of the sliding groove opening. The guiding direction of the guide member is parallel to the sliding direction of the locking member, and a guide groove cooperating with the guide member is recessed on the locking member; a guide column is provided on the top of the guide member, and the guiding direction of the guide column is parallel to the guiding direction of the guide member, and the reset member is sleeved on the guide column, and the top of the guide member abuts against one end of the reset member, and the other end of the reset member abuts against the outer core body; the locking module also includes a hole position provided on the outer core body, and the hole position corresponds to the buckle portion; a locking module is provided at both ends of the filter element handle.

[0016] Furthermore, the inner core component is inserted into the top of the outer core component, the center line of the inner core component is parallel to the center line of the outer core component, and the center line of the inner core component is on the same straight line as the center line of the outer core component; a handle portion is provided on the top of the inner core component; the handle portion is rotatably provided on the inner core component, and a pushing member is provided at the end of the handle portion, and the pushing member rotates synchronously with the handle portion, and the outer core component is located within the movable range of the pushing member, and the maximum distance from the force point applied on the handle portion to the rotation point of the handle portion on the inner core component is greater than the distance from the force point of the outer core component acting on the pushing member to the rotating member; the pushing member includes an eccentric circular portion and a push portion, the eccentric circular portion is fixed on the handle portion, and the axis of the eccentric circular portion does not pass through the rotation point; the push portion is fixed on the eccentric circular portion, and along the direction in which the push portion moves away from the eccentric circular portion, the bottom surface of the push portion gradually extends toward the direction in which the push portion moves away from the inner core component.

[0017] A water purifier comprises the above-mentioned composite filter element.

[0018] Compared with the prior art, the water purifier of the present invention inserts the inner core assembly into the outer core assembly, and the outer core assembly limits the inner core assembly's X-axis displacement, Y-axis displacement, rotation around the X axis, and rotation around the Y axis. Then, the outer core water inlet of the outer core assembly and the inner core water inlet of the inner core assembly are plugged into the waterway plate of the water purifier. Since the axis of the outer core water inlet and the axis of the inner core water inlet are not parallel to the insertion direction of the inner core assembly on the outer core assembly, that is, the axis of the outer core water inlet and the axis of the inner core water inlet are not parallel to the Z axis of the inner core assembly, the waterway plate interface of the water purifier will limit the Z-axis displacement and the Z-axis rotation of the inner core assembly and the outer core assembly. It can be seen from this that the composite filter element structure designed in this way makes it possible to connect the inner core assembly and the outer core assembly without the need to use connection methods such as screw threads, buckles, and screws. When the inner core assembly needs to be replaced, the composite filter element is directly removed from the water purifier, that is, the outer core water inlet of the outer core assembly and the inner core water inlet of the inner core assembly are separated from the water channel plate of the water purifier, and then the inner core assembly is directly pulled out from the outer core assembly to complete the disassembly of the inner core assembly. The entire inner core assembly is simple to load and unload, and the replacement action is simple.

[0019] Furthermore, the snap-on portion has a first inclined surface, and the fastener has a second inclined surface adapted to the first inclined surface; at least two snap-on portions are provided on the locking member, and the at least two snap-on portions are longitudinally arranged on the locking member, and the outer core body is provided with a number of holes equal to the snap-on portions, and each hole corresponds to each snap-on portion; a notch is provided on one side of the hole for the fastener to pass through.

[0020] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of an explosion of the composite filter element described in the embodiment;

[0022] Figure 2 This is a schematic diagram of the assembly of the composite filter element described in the embodiment;

[0023] Figure 3 Schematic diagram of the structure of the outer core assembly according to the embodiment;

[0024] Figure 4 A perspective view of the composite filter element described in the embodiment;

[0025] Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram;

[0026] Figure 6 A three-dimensional diagram of the composite filter element according to the embodiment from another perspective;

[0027] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0028] Figure 8 Schematic diagram of unlocking the composite filter element according to the embodiment;

[0029] Figure 9 Schematic diagram of the structure of the inner core assembly according to the embodiment;

[0030] Figure 10 This is a schematic diagram of unlocking the inner core assembly according to the embodiment;

[0031] Figure 11 This is a schematic diagram of an explosion of the water purifier described in the embodiment;

[0032] Figure 12 for Figure 11 Enlarged schematic diagram of point C in the middle;

[0033] Reference numerals:

[0034] 1000, outer core assembly; 1100, outer core body; 1110, outer core water inlet; 1111, clean water interface; 1112, waste water interface; 1120, positioning groove; 1130, accommodating cavity; 1140, slide groove; 1150, guide member; 1160, guide column; 1200, filter element handle; 1210, groove; 1300, locking module; 1310, locking member; 1311, guide groove; 1312, hanging part; 1313, buckle part; 1 314. First inclined surface; 1320. Resetting member; 1330. Hole position; 1331. Notch; 2000. Inner core assembly; 2100. Inner core body; 2110. Inner core water inlet; 2111. Water inlet interface; 2112. Water outlet interface; 2113. Pure water interface; 2120. Positioning member; 2130. Handle portion; 2140. Pushing member; 2141. Eccentric circular portion; 2142. Pushing portion; 1. Machine body; 11. Fastener; 111. Second inclined surface. DETAILED DESCRIPTION

[0035] A composite filter element, see Figure 1 and Figure 2 The composite filter element includes an outer core assembly 1000 and an inner core assembly 2000. An outer core water inlet 1110 is provided on the circumferential side surface of the upper end of the outer core assembly 1000. The inner core assembly 2000 is inserted into the top of the outer core assembly 1000, and an inner core water inlet 2110 is provided on the circumferential side surface of the upper end of the inner core assembly 2000. The axes of the outer core water inlet 1110 and the inner core water inlet 2110 are not parallel to the insertion direction of the inner core assembly 2000 on the outer core assembly 1000.

[0036] During the assembly process, the inner core component 2000 is first inserted into the outer core component 1000. The outer core component 1000 limits the X-axis displacement, Y-axis displacement, rotation around the X-axis, and rotation around the Y-axis of the inner core component 2000, so that the inner core component 2000 only has the Z-axis displacement and the freedom of rotation around the Z-axis on the outer core component 1000; then, the composite filter element is installed on the waterway plate of the water purifier. Specifically, the outer core water inlet 1110 and the inner core water inlet 2110 are plugged into the interface of the waterway plate of the water purifier. The interface of the waterway plate limits the Z-axis displacement and the freedom of rotation around the Z-axis of the inner core component 2000. At the same time, under the joint action of the interface between the inner core component 2000 and the waterway plate, the outer core component 1000 is limited in the X-axis displacement, Y-axis displacement, Z-axis displacement, rotation around the X-axis, rotation around the Y-axis, and rotation around the Z-axis on the waterway plate.

[0037] Preferably, in order to increase the force exerted by the waterway plate on the composite filter element, the axis of the outer core water inlet 1110 is perpendicular to the direction in which the inner core assembly 2000 is inserted into the outer core assembly 1000, and the axis of the inner core water inlet 2110 is perpendicular to the direction in which the inner core assembly 2000 is inserted into the outer core assembly 1000. In this embodiment, the centerline of the outer core assembly 1000 is parallel to the centerline of the inner core assembly 2000, the direction in which the inner core assembly 2000 is inserted into the outer core assembly 1000 is parallel to the centerline of the outer core assembly 1000, the outer core water inlet 1110 extends horizontally outward from the circumferential side surface of the outer core assembly 1000, the outer core water inlet 1110 and the centerline of the outer core assembly 1000 are perpendicular to each other, and the inner core water inlet 2110 extends horizontally outward from the circumferential side surface of the inner core assembly 2000, and the inner core water inlet 2110 and the centerline of the inner core assembly 2000 are perpendicular to each other.

[0038] Preferably, to facilitate insertion of the composite filter element into the waterway plate of the water purifier, the outer core water inlet 1110 and the inner core water inlet 2110 are located on the same side, and the axis of the outer core water inlet 1110 is parallel to the axis of the inner core water inlet 2110. During assembly, the composite filter element can be driven in one direction to simultaneously insert the outer core water inlet 1110 and the inner core water inlet 2110 into the waterway plate.

[0039] Preferably, in order to ensure that the outer core water inlet 1110 and the inner core water inlet 2110 are located on the same side and their axes are parallel to each other, a positioning groove 1120 and a positioning member 2120 adapted to the positioning groove 1120 are provided between the outer core assembly 1000 and the inner core assembly 2000. The outer core assembly 1000 and the inner core assembly 2000 are assembled and positioned by the cooperation of the positioning member 2120 and the positioning groove 1120. During the assembly process of the composite filter element, the inner core assembly 2000 is directly inserted into the top of the outer core assembly 1000, and then the positioning member 2120 is inserted or snapped into the positioning groove 1120, thereby determining the relative position between the inner core assembly 2000 and the outer core assembly 1000. In this embodiment, the inner core water inlet 2110 constitutes the above-mentioned positioning member 2120, and the above-mentioned positioning groove 1120 is arranged at the top of the outer core component 1000, and the positioning groove 1120 opens upward. During the assembly process of the composite filter element, the inner core component 2000 is inserted into the outer core component 1000 from top to bottom, and the horizontally arranged inner core water inlet 2110 is directly placed in the positioning groove 1120, and the outer peripheral wall of the inner core water inlet 2110 is against the inner wall of the positioning groove 1120.

[0040] Preferably, after the composite filter element is inserted into the waterway plate, the composite filter element may separate from the waterway plate due to insufficient connection strength between the outer core water inlet 1110 and the inner core water inlet 2110. Therefore, a locking module 1300 for snapping with an external component is provided on the outer core assembly 1000. When the outer core water inlet 1110 and the inner core water inlet 2110 are inserted into the external component, the locking module 1300 snaps with the external component, thereby preventing the composite filter element from separating from the waterway plate.

[0041] The specific structure of the outer core assembly 1000 will be described in detail below.

[0042] See also Figures 3 to 8 The outer core assembly 1000 includes an outer core body 1100. The outer core body 1100 is used to purify water. The outer core water inlet 1110 is provided on the outer core body 1100. The outer core water inlet 1110 includes a clean water interface 1111 and a waste water interface 1112. The axis of the clean water interface 1111 and the axis of the waste water interface 1112 are both perpendicular to the insertion direction of the inner core assembly 2000 on the outer core assembly 1000. In this embodiment, the water inlet 2111 and the waste water interface 1112 are symmetrical about the center line of the outer core body 1100. The clean water interface 1111 and the waste water interface 1112 are located on the same side of the outer core body 1100. The axis of the clean water interface 1111 and the axis of the waste water interface 1112 are parallel to each other. In addition, an upwardly opening accommodating cavity 1130 is provided in the outer core body 1100. The open end of the accommodating cavity 1130 is provided on the top surface of the outer core body 1100. The positioning groove 1120 is provided on the top surface of the outer core body 1100 , and the positioning groove 1120 is located on one side of the accommodating cavity 1130 .

[0043] The outer core assembly 1000 also includes a filter handle 1200 and the aforementioned locking module 1300. The filter handle 1200 is pivotally connected to the outer core body 1100 at both ends, allowing limited up-and-down movement on the top of the outer core body 1100. A locking module 1300 is provided at each end of the filter handle 1200. The locking module 1300 is slidably mounted on the outer core body 1100, allowing vertical upward and downward movement on the outer core body 1100. The sliding direction of the locking module 1300 is parallel to the rotational direction of the filter handle 1200. A portion of the locking module 1300 is located within the movable range of the filter handle 1200. When an external force pulls the filter handle 1200 to rotate, the filter handle 1200 contacts a portion of the locking module 1300, driving the locking module 1300 to move.

[0044] See also Figures 3 to 8A slide groove 1140 is provided on the left and right sides of the outer core body 1100. The slide groove 1140 is provided vertically, and the guide direction of the slide groove 1140 is parallel to the sliding direction of the locking module 1300. The locking module 1300 moves vertically up and down along the slide groove 1140. Specifically, the slide groove 1140 is located on one side of the hinge point between the filter element handle 1200 and the outer core body 1100, and this side is the side of the hinge point away from the end of the filter element handle 1200, so that when an external force pulls the filter element handle 1200 to rotate upward, the filter element handle 1200 abuts against the part of the locking module 1300, thereby driving the locking module 1300 to move upward.

[0045] See also Figures 3 to 8 To confine the locking module 1300 within the chute 1140, a guide member 1150 is protruded from the inner wall of the chute 1140. The guide member 1150 is located on one side of the opening of the chute 1140. The guide member 1150 is vertically arranged, and its guiding direction is parallel to the sliding direction of the locking module 1300. The locking module 1300 slides on the guide member 1150. In addition, a guide post 1160 is provided on the top of the guide member 1150. The guide post 1160 is vertically arranged on the top surface of the guide member 1150, and its guiding direction is parallel to the guiding direction of the guide member 1150.

[0046] See also Figures 3 to 8 A groove 1210 is provided on the inner side of the filter cartridge handle 1200. The groove 1210 can accommodate a portion of the locking module 1300, so that the portion of the locking module 1300 is located within the movable range of the filter cartridge handle 1200. When an external force pulls the filter cartridge handle 1200 upward, the inner wall of the groove 1210 abuts against the portion of the locking module 1300, thereby driving the locking module 1300 to move.

[0047] See also Figures 3 to 8The locking module 1300 includes a locking member 1310, a reset member 1320, and a hole 1330. The locking member 1310 is snap-fitted to an external component. The locking member 1310 is slidably disposed within the chute 1140, allowing vertical movement up and down within the chute 1140. A guide groove 1311 is recessed in the locking member 1310 to engage with the guide member 1150. Part of the locking member 1310 is positioned within the groove 1210, thereby being within the range of motion of the filter cartridge handle 1200. The reset member 1320 is disposed between the locking member 1310 and the outer core body 1100 and is used to reset the locking member 1310. Specifically, the reset member 1320 is disposed vertically and sleeved onto the guide rod. When the locking member 1310 does not apply force to the reset member 1320, one end of the reset member 1320 abuts against the top of the guide member 1150, and the other end of the reset member 1320 abuts against the outer core body 1100. A hole 1330 is disposed in the outer core body 1100 and corresponds to the portion of the locking member 1310 that is used for snap-fit ​​connection with the external component. During the assembly process of the filter element and the external component, part of the external component is inserted into the hole 1330, and the part of the external component moves along the hole 1330 and pushes open the locking member 1310, while the reset member 1320 is compressed; after the external component is in place, the locking member 1310 is reset under the elastic force of the reset member 1320, and the locking member 1310 is engaged with part of the external component to complete the assembly work.

[0048] See also Figures 3 to 8 A hanging portion 1312 is provided at the top of the locking member 1310. This hanging portion 1312 is located in the groove 1210 of the filter cartridge handle 1200. A snap portion 1313 is provided on the surface of the locking member 1310 near the hole 1330. The snap portion 1313 is used to snap-connect with the external component and corresponds to the hole 1330. During the process of disassembling the filter cartridge from the external component, an external force pulls the filter cartridge handle 1200 upward, and the inner wall of the groove 1210 abuts against the outer wall of the hanging portion 1312. The hanging portion 1312 moves along the groove 1210 away from the hinge point between the filter cartridge handle 1200 and the outer core body 1100, thereby driving the locking member 1310 upward. At the same time, the reset member 1320 is compressed, and the snap portion 1313 is separated from the external component, completing the disassembly.

[0049] See also Figures 3 to 8A first inclined surface 1314 is provided on the surface of the snap portion 1313 near the hole 1330. During assembly of the filter element and the external component, a portion of the external component is inserted into the hole 1330, moves along the hole 1330, and abuts against the first inclined surface 1314 of the snap portion 1313. This portion of the external component pushes the locking member 1310 upward. Once the external component is in place, the snap portion 1313 of the locking member 1310 engages with the portion of the external component, completing the assembly.

[0050] See also Figures 3 to 8 To increase the locking force of locking module 1300, two latching portions 1313 are provided on the surface of locking member 1310 near hole 1330. The two latching portions 1313 are longitudinally distributed along the surface. Accordingly, two holes 1330 are provided on outer core body 1100, each corresponding to one of the two latching portions 1313. More specifically, a notch 1331 is provided on one side of hole 1330, allowing a portion of the external component to enter and completely pass through hole 1330. This design ensures that the contact area between latching portion 1313 and the portion of the external component approximates the end surface area of ​​hole 1330, maximizing the contact area between latching portion 1313 and the portion of the external component, thereby further increasing the locking force of locking module 1300.

[0051] The specific structure of the inner core component 2000 is described in detail below.

[0052] See also Figure 9 and Figure 10 The inner core component 2000 is inserted into the top of the outer core body 1100, and the inner core component 2000 is located in the accommodating cavity 1130 of the outer core body 1100. The center line of the inner core component 2000 is parallel to the center line of the outer core body 1100, and the center line of the inner core component 2000 is located on the same straight line as the center line of the outer core body 1100.

[0053] See also Figure 9 and Figure 10The inner core assembly 2000 includes an inner core body 2100. The inner core water inlet 2110 is disposed on the peripheral sidewall of the inner core body 2100. The inner core water inlet 2110 extends horizontally outward from the peripheral sidewall of the inner core body 2100. The inner core water inlet 2110 is located between the clean water interface 1111 and the waste water inlet. The inner core water inlet 2110 includes a water inlet interface 2111, a water outlet interface 2112, and a pure water interface 2113. The axes of the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113 are all perpendicular to the direction in which the inner core assembly 2000 is inserted into the outer core assembly 1000. In this embodiment, the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113 are located on the same side of the inner core body 2100, and the clean water interface 1111, the waste water interface 1112, the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113 are located on the same side. The axis of the water interface, the axis of the waste water interface 1112, the axis of the water inlet interface 2111, the axis of the water outlet interface 2112, and the axis of the pure water interface 2113 are parallel to each other. The water inlet interface 2111 and the water outlet interface 2112 are symmetrical about the center line of the inner core body 2100, and the pure water interface 2113 is located between the water inlet interface 2111 and the water outlet interface 2112. In addition, at least one of the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113 constitutes the above-mentioned positioning member 2120. In this embodiment, the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113 all constitute the above-mentioned positioning member 2120. Three positioning grooves 1120 are provided on the top surface of the outer core body 1100, and the three positioning grooves 1120 are respectively matched with the water inlet interface 2111, the water outlet interface 2112, and the pure water interface 2113.

[0054] See also Figure 9 and Figure 10 A handle 2130 is provided at the top of the inner core body 2100, and the handle 2130 is rotatably provided on the inner core body 2100. A pusher 2140 is provided at the end of the handle 2130, and the pusher 2140 rotates synchronously with the handle 2130. The outer core body 1100 is located within the movable range of the pusher 2140, and the maximum distance from the point where the force is applied to the handle 2130 to the point where the handle 2130 rotates on the inner core assembly 2000 is greater than the distance from the point where the force of the outer core body 1100 on the pusher 2140 to the rotating member. The pushing member 2140 includes an eccentric circular portion 2141 and a push portion 2142. The eccentric circular portion 2141 is fixed on the handle portion 2130. The axis of the eccentric circular portion 2141 does not pass through the rotation point. The push portion 2142 is fixed on the eccentric circular portion 2141. Along the direction in which the push portion 2142 moves away from the eccentric circular portion 2141, the bottom surface of the push portion 2142 gradually extends toward the direction in which the push portion 2142 moves away from the inner core component 2000.

[0055] When the inner core assembly 2000 needs to be taken out, the handle portion 2130 is driven to flip over, and the handle portion 2130 drives the pushing member 2140 to rotate. During the rotation of the pushing member 2140, the bottom surface of the pushing portion 2142 is against the top surface of the outer core body 1100. With the help of the reaction force of the outer core body 1100 on the pushing portion 2142, the inner core body 2100 rises upward to escape from the accommodating cavity 1130 of the outer core body 1100.

[0056] A water purifier, see Figures 1 to 12 , which includes a housing 1 and the aforementioned composite filter element. A fastener 11 is provided on the housing 1, which is snap-connected to the aforementioned snap portion 1313 to facilitate assembly of the housing 1 and the composite filter element. In this embodiment, the housing 1 is provided with an equal number of fasteners 11 as the snap portions 1313, with each fastener 11 corresponding to each snap portion 1313, and each fastener 11 snap-connected to a corresponding snap portion 1313.

[0057] See also Figure 12 The fastener 11 has a second inclined surface 111 that matches the first inclined surface 1314. During the assembly of the composite filter element and the body 1, the fastener 11 of the body 1 passes through the above-mentioned hole 1330 through the notch 1331 of the above-mentioned hole 1330; then the second inclined surface 111 of the fastener 11 abuts against the first inclined surface 1314 of the locking portion 1313, and the locking member 1310 moves upward along the second inclined surface 111 of the fastener 11, while the reset member 1320 is compressed; after the body 1 is in place, the locking member 1310 is reset under the elastic force of the reset member 1320, and the locking member 1310 is engaged with the fastener 11 of the body 1, completing the assembly work.

[0058] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A composite filter element, characterized in that: The composite filter element comprises: An outer core component (1000), the outer core component (1000) having an outer core water inlet (1110), and a receiving cavity (1130) provided inside the outer core component (1000); An inner core component (2000), wherein the inner core component (2000) is inserted into the outer core component (1000), the inner core component (2000) is located in the accommodating cavity (1130), the inner core component (2000) has an inner core water inlet (2110), and the axis of the outer core water inlet (1110) and the axis of the inner core water inlet (2110) are not parallel to the insertion direction of the inner core component (2000) on the outer core component (1000); The outer core assembly (1000) has a locking module (1300) for snap-connecting with an external component. When the outer core water inlet (1110) and the inner core water inlet (2110) are inserted into the external component, the locking module (1300) is snap-connected with the external component.

2. The composite filter element according to claim 1, characterized in that: The outer core water inlet (1110) and the inner core water inlet (2110) are located on the same side, and the axis of the outer core water inlet (1110) and the axis of the inner core water inlet (2110) are parallel to each other.

3. The composite filter element according to claim 1, characterized in that: The axis of the outer core water inlet (1110) and the direction in which the inner core component (2000) is inserted into the outer core component (1000) are perpendicular to each other; the axis of the inner core water inlet (2110) and the direction in which the inner core component (2000) is inserted into the outer core component (1000) are perpendicular to each other.

4. The composite filter element according to claim 1, characterized in that: A positioning groove (1120) and a positioning member (2120) adapted to the positioning groove (1120) are provided between the outer core component (1000) and the inner core component (2000). The outer core component (1000) and the inner core component (2000) are assembled and positioned by utilizing the cooperation between the positioning member (2120) and the positioning groove (1120).

5. The composite filter element according to claim 4, characterized in that: The inner core water inlet (2110) constitutes the positioning member (2120), the positioning groove (1120) is provided on the outer core assembly (1000), and the inner core water inlet (2110) is mounted on the positioning groove (1120); The outer core water inlet (1110) includes a clean water interface (1111) and a waste water interface (1112); The inner core water inlet (2110) is located between the clean water interface (1111) and the waste water interface (1112); The inner core water inlet (2110) comprises a water inlet interface (2111), a water outlet interface (2112), and a pure water interface (2113); The clean water interface (1111) and the waste water interface (1112) are located on the same side, and the axis of the clean water interface (1111) and the axis of the waste water interface (1112) are parallel to each other; The water inlet interface (2111), the water outlet interface (2112), and the pure water interface (2113) are located on the same side, and the axis of the water inlet interface (2111), the axis of the water outlet interface (2112), and the axis of the pure water interface (2113) are parallel to each other; The clean water interface (1111), the waste water interface (1112), the water inlet interface (2111), the water outlet interface (2112), and the pure water interface (2113) are located on the same side, and the axis of the clean water interface (1111), the axis of the waste water interface (1112), the axis of the water inlet interface (2111), the axis of the water outlet interface (2112), and the axis of the pure water interface (2113) are parallel to each other; The axis of the clean water interface (1111), the axis of the waste water interface (1112), the axis of the water inlet interface (2111), the axis of the water outlet interface (2112), and the axis of the pure water interface (2113) are all perpendicular to the insertion direction of the inner core component (2000) on the outer core component (1000); At least one of the water inlet interface (2111), the water outlet interface (2112), and the pure water interface (2113) constitutes the positioning member (2120).

6. The composite filter element according to claim 2, characterized in that: The outer core assembly (1000) comprises an outer core body (1100), a filter element handle (1200), and the locking module (1300); the filter element handle (1200) is rotatably connected to the outer core body (1100); the locking module (1300) is slidably arranged on the outer core body (1100); a portion of the locking module (1300) is located within the movable range of the filter element handle (1200); when an external force pulls the filter element handle (1200) to rotate, the locking module (1300) is displaced under the drive of the filter element handle (1200); The locking module (1300) slides vertically up and down on the outer core body (1100); The sliding direction of the locking module (1300) is parallel to the rotation direction of the filter element handle (1200); The locking module (1300) includes a locking member (1310), the locking member (1310) is slidably arranged on the outer core body (1100), the locking member (1310) slides vertically up and down on the outer core body (1100), a portion of the locking member (1310) is located within the movable range of the filter element handle (1200), and the locking member (1310) is provided with a snap-fitting portion (1313) for snap-fitting with an external component; when an external force pulls the filter element handle (1200) to rotate, the locking member (1310) is displaced under the drive of the filter element handle (1200), and the snap-fitting portion (1313) is separated from the external component; The filter element handle (1200) is provided with a groove (1210), and the locking member (1310) is provided with a hanging portion (1312), and the hanging portion (1312) is located in the groove (1210); when an external force pulls the filter element handle (1200) to rotate, the inner wall of the groove (1210) abuts against the hanging portion (1312) to drive the locking member (1310) to move; The locking module (1300) further includes a reset member (1320), and the reset member (1320) is connected to the outer core body (1100) and the locking member (1310) respectively; when an external force pulls the filter element handle (1200) to rotate, the locking member (1310) is displaced under the drive of the filter element handle (1200), and at the same time, the reset member (1320) is compressed or stretched, and the buckle portion (1313) is separated from the external component; after the external force disappears, the locking member (1310) is reset under the elastic force of the reset member (1320); A sliding groove (1140) is provided on the outer core body (1100), the locking member (1310) slides in the sliding groove (1140), and the guiding direction of the sliding groove (1140) is parallel to the sliding direction of the locking member (1310); A guide member (1150) is convexly provided on the inner wall of the slide groove (1140), and the guide member (1150) is located on one side of the opening of the slide groove (1140). The guiding direction of the guide member (1150) is parallel to the sliding direction of the locking member (1310), and a guide groove (1311) is concavely provided on the locking member (1310) to cooperate with the guide member (1150); A guide column (1160) is provided on the top of the guide member (1150), and the guiding direction of the guide column (1160) is parallel to the guiding direction of the guide member (1150). The reset member (1320) is sleeved on the guide column (1160), and the top of the guide member (1150) abuts against one end of the reset member (1320), and the other end of the reset member (1320) abuts against the outer core body (1100); The locking module (1300) further comprises a hole (1330) provided on the outer core body (1100), wherein the hole (1330) corresponds to the buckle portion (1313); A locking module (1300) is provided at each end of the filter element handle (1200).

7. The composite filter element according to claim 1, characterized in that: The inner core component (2000) is inserted on the top of the outer core component (1000), the center line of the inner core component (2000) and the center line of the outer core component (1000) are parallel to each other, and the center line of the inner core component (2000) and the center line of the outer core component (1000) are located on the same straight line; A handle portion (2130) is provided on the top of the inner core component (2000); The handle portion (2130) is rotatably arranged on the inner core component (2000), a pushing member (2140) is arranged at the end of the handle portion (2130), and the pushing member (2140) rotates synchronously with the handle portion (2130), the outer core component (1000) is located within the movable range of the pushing member (2140), and the farthest distance from the point of force applied on the handle portion (2130) to the rotation point of the handle portion (2130) on the inner core component (2000) is greater than the distance from the point of force applied by the outer core component (1000) on the pushing member (2140) to the rotating member; The pushing member (2140) includes an eccentric circular portion (2141) and a push portion (2142), wherein the eccentric circular portion (2141) is fixed on the handle portion (2130), and the axis of the eccentric circular portion (2141) does not pass through the rotation point; the push portion (2142) is fixed on the eccentric circular portion (2141), and along the direction in which the push portion (2142) moves away from the eccentric circular portion (2141), the bottom surface of the push portion (2142) gradually extends toward the direction in which the push portion (2142) moves away from the inner core component (2000).

8. A water purifier, characterized in that: The water purifier comprises the composite filter element according to any one of claims 1 to 7.

9. The water purifier according to claim 8, characterized in that: The water purifier includes the composite filter element according to claim 6; The water purifier comprises a body (1), a fastener (11) is provided on the body (1), and the fastener (11) is snap-connected with the snap-on portion (1313); The buckle portion (1313) has a first inclined surface (1314), and the buckle (11) has a second inclined surface (111) adapted to the first inclined surface (1314); At least two snap-fitting portions (1313) are provided on the locking member (1310), and the at least two snap-fitting portions (1313) are longitudinally arranged on the locking member (1310). The outer core body (1100) is provided with the same number of holes (1330) as the number of the snap-fitting portions (1313), and each hole (1330) corresponds to each snap-fitting portion (1313). A notch (1331) is provided on one side of the hole (1330) for the fastener (11) to pass through.

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