Filter element assembly and water purifier

Abstract

The filter element assembly comprises a water path plate, a pretreatment filter element, a reverse osmosis filter element and a waste water valve, the water path plate comprises a plurality of filter element mounting seats and a water path structure part, and the central axes of the plurality of filter element mounting seats define a central axis surface; the plurality of filter element mounting seats comprise a first mounting seat and a second mounting seat, the pretreatment filter element and the first mounting seat are coaxially mounted, the reverse osmosis filter element and the second mounting seat are coaxially mounted, the wastewater valve is mounted on the water path structure piece and is positioned on one side of a middle axial surface, and the wastewater valve is communicated with a wastewater opening of the reverse osmosis filter element through a water path; the wastewater of the reverse osmosis filter element is only allowed to flow to the water outlet of the waterway plate unidirectionally. According to the technical scheme, the space of the waterway plate on the two sides of the middle axial surface can be fully utilized, and the size of the water purifier is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification, and in particular to a filter element assembly and a water purifier. BACKGROUND

[0002] At present, the use of water purifiers has become more popular. The water purifier can deeply filter impurities in water and water pipelines, and provide people with relatively clean domestic water, thereby better protecting the health of users.

[0003] In the related art, the filter element assembly is provided with a waterway plate to install multiple filter elements and multiple functional components. The waterway plate has waterways that communicate the multiple filter elements and the multiple functional components. The central axes of the multiple filter elements define a central axis plane.

[0004] Generally, the central axis plane transversely intersects each filter element and each functional component, which makes the length of the filter element assembly in the arrangement direction of the filter elements very long, thereby causing the overall volume of the water purifier to be relatively large. SUMMARY

[0005] Embodiments of the present application provide a filter element assembly and a water purifier, aiming to improve the problem of the overall volume of the water purifier being relatively large.

[0006] To solve the above technical problem, the embodiments of the present application provide a filter element assembly, which comprises:

[0007] a waterway plate comprising multiple filter element mounting seats and waterway configuration components arranged on the filter element mounting seats, the central axes of the multiple filter element mounting seats defining a central axis plane, the waterway configuration components having waterways that sequentially communicate the multiple filter element mounting seats, and the multiple filter element mounting seats including at least a first mounting seat and a second mounting seat;

[0008] a pretreatment filter element coaxially mounted with the first mounting seat to access the waterways;

[0009] a reverse osmosis filter element coaxially mounted with the second mounting seat to access the waterways, and located downstream of the pretreatment filter element along the water flow direction;

[0010] a wastewater valve mounted on the waterway configuration components and located on one side of the central axis plane, the wastewater valve communicating the wastewater outlet of the reverse osmosis filter element through the waterways, and allowing the wastewater of the reverse osmosis filter element to unidirectionally flow to the waterway plate drain outlet.

[0011] In some embodiments, the filter element assembly further comprises:

[0012] a pressure tank communicating the water outlet of the reverse osmosis filter element through the waterways; and

[0013] A one-way valve is arranged between the reverse osmosis filter element and the pressure tank, allowing water from the reverse osmosis filter element to flow to the pressure tank in one direction only.

[0014] In some embodiments, the wastewater valve and the one-way valve are located on opposite sides of the mid-axial surface.

[0015] In some embodiments, the filter element assembly further comprises:

[0016] A three-way valve is mounted on the waterway structure and located on one side of the mid-axial surface, and a first water inlet of the three-way valve is in communication with the water outlet of the pre-treatment filter element through the waterway.

[0017] The pressure tank is in communication with a second water inlet of the three-way valve through the waterway.

[0018] In some embodiments, the three-way valve is located between the first mounting seat and the second mounting seat.

[0019] In some embodiments, the wastewater valve is located between the second mounting seat and the water outlet of the waterway plate.

[0020] In some embodiments, the wastewater valve and the three-way valve are located on the same side of the mid-axial surface.

[0021] In some embodiments, the filter element assembly further comprises:

[0022] A pressure pipe is mounted on the waterway structure and located on the side of the mid-axial surface away from the three-way valve, and the pressure tank is in communication with the second water inlet through the pressure pipe.

[0023] In some embodiments, the one-way valve and the pressure pipe are partially stacked and spaced apart in the vertical direction.

[0024] In some embodiments, the plurality of filter element mounting seats further comprises a fourth mounting seat, and the filter element assembly further comprises:

[0025] A post-treatment filter element is coaxially mounted with the fourth mounting seat to access the waterway, and along the water flow direction, the post-treatment filter element is located downstream of the reverse osmosis filter element.

[0026] The one-way valve is located between the second mounting seat and the fourth mounting seat; and / or,

[0027] The wastewater valve is located between the second mounting seat and the fourth mounting seat.

[0028] In some embodiments, the plurality of filter seat further comprises a fifth seat, and the filter assembly further comprises:

[0029] A mineralization filter is coaxially installed with the fifth seat to access the water path, and the mineralization filter is located downstream of the post-treatment filter along the water flow direction.

[0030] In some embodiments, the filter assembly further comprises:

[0031] A flow meter is installed on the water path structure to access the water path, and the flow meter is located upstream of the pre-treatment filter along the water flow direction, and the central axis plane is transverse to the flow meter.

[0032] In some embodiments, the plurality of filter seats further comprises a third seat, and the filter assembly further comprises:

[0033] A PP cotton filter is coaxially installed with the third seat to access the water path, and the PP cotton filter is located upstream of the flow meter along the water flow direction.

[0034] In some embodiments, the water path comprises:

[0035] A first flow channel, one end of which communicates with the water inlet of the water path plate, and the other end communicates with the water inlet of the PP cotton filter through the third seat, and the water outlet of the PP cotton filter communicates with the water inlet of the flow meter through the third seat;

[0036] A second flow channel, one end of which communicates with the water outlet of the flow meter, and the other end communicates with the water inlet of the pre-treatment filter through the first seat;

[0037] A third flow channel, one end of which communicates with the water outlet of the pre-treatment filter through the first seat, and the other end communicates with the first water inlet of the three-way valve;

[0038] A fourth flow channel, one end of which communicates with the water outlet of the three-way valve, and the other end communicates with the water inlet of the reverse osmosis filter through the second seat;

[0039] A fifth flow channel, one end of which communicates with the water outlet of the reverse osmosis filter through the second seat, and the other end communicates with the water inlet of the one-way valve;

[0040] A wastewater channel, one end of which communicates with the wastewater outlet of the reverse osmosis filter through the second seat, and the other end communicates with the wastewater valve;

[0041] A sixth flow channel, one end of which is communicated with the water outlet of the one-way valve, the other end of which is communicated with the pressure tank, and communicated with the water inlet of the post-treatment filter cartridge through the fourth mounting seat, and communicated with the second water inlet of the three-way valve through the pressure pipe;

[0042] A seventh flow channel, one end of which is communicated with the water outlet of the post-treatment filter cartridge through the fourth mounting seat, the other end of which is communicated with the water inlet of the mineralization filter cartridge through the fifth mounting seat; and

[0043] An eighth flow channel, one end of which is communicated with the water outlet of the mineralization filter cartridge through the fifth mounting seat, the other end of which is communicated with the water outlet of the waterway plate.

[0044] In some embodiments, the middle axial surface transversely crosses the second flow channel, the third flow channel, the fourth flow channel, the wastewater channel and the seventh flow channel;

[0045] The fifth flow channel is located on one side of the middle axial surface where the one-way valve is arranged.

[0046] In some embodiments, the sixth flow channel is recessed with a recessed groove near the inner wall surface of the post-treatment filter cartridge, the groove bottom of the recessed groove is communicated with the water inlet of the post-treatment filter cartridge, and the recessed groove is located between the connecting port of the waterway communicated with the pressure tank and the one-way valve.

[0047] In some embodiments, the distance between the middle axes of two adjacent filter cartridge mounting seats is a, wherein 57mm≤a≤141mm.

[0048] In some embodiments, the pre-treatment filter cartridge comprises a filter cartridge body and a driving part, the driving part is mounted on the filter cartridge body, and each filter cartridge mounting seat has the same structure;

[0049] The first mounting seat comprises:

[0050] A seat body communicated with the waterway;

[0051] A rotating part rotatably mounted on the seat body to communicate or block the waterway; and

[0052] A transmission part arranged on the rotating part;

[0053] The driving part can be inserted and matched with the transmission part to drive the rotating part to rotate.

[0054] In some embodiments, the pre-treatment filter cartridge further comprises a guide part, the guide part is mounted on the filter cartridge body;

[0055] The seat body is provided with a mounting groove, the rotating member is rotatably mounted at the bottom of the mounting groove, and the transmission part is located on the surface of the rotating member away from the bottom of the mounting groove;

[0056] The first mounting seat further comprises:

[0057] A guide protrusion protrudes from the wall of the mounting groove and extends along the circumference of the mounting groove;

[0058] The guide part can extend into the space between the guide protrusion and the bottom of the mounting groove.

[0059] In some embodiments, the first mounting seat further comprises:

[0060] A limiting protrusion has one end connected to one end of the guide protrusion in the circumferential direction of the mounting groove and the other end extending along the axial direction of the mounting groove towards the bottom of the mounting groove.

[0061] In some embodiments, the number of guide parts of the pre-treatment filter element is two.

[0062] The number of guide protrusions and limiting protrusions is two, the two guide protrusions are arranged at intervals in the circumferential direction of the mounting groove to form two avoiding channels, and the guide protrusions and the limiting protrusions are arranged one by one.

[0063] The limiting protrusion is arranged at the end of the corresponding guide protrusion away from the other limiting protrusion.

[0064] In some embodiments, the side of the guide protrusion connected to the limiting protrusion is provided with a guide inclined surface extending from the direction close to the bottom of the mounting groove towards the direction close to the adjacent avoiding channel.

[0065] In some embodiments, the side of the guide protrusion facing the bottom of the corresponding mounting groove is recessed with a positioning groove.

[0066] The pre-treatment filter element further comprises:

[0067] A positioning part protrudes from the surface of the guide part facing the guide protrusion.

[0068] When the first mounting seat is in communication with the water path, the positioning part and the positioning groove are inserted and matched.

[0069] The application also provides a water purifier, which comprises:

[0070] A shell; and

[0071] The filter element assembly described above;

[0072] The housing cover is arranged on the side of the waterway component away from the filter core mounting seat.

[0073] In some embodiments, the water purifier further comprises:

[0074] The decorative plate is mounted on the outer peripheral wall of the housing.

[0075] In some embodiments, the water purifier comprises:

[0076] The tank is provided with a mounting cavity, and the filter core assembly is mounted in the mounting cavity.

[0077] The filter core assembly and the water purifier in the embodiments of the present application arrange the wastewater valve on the waterway component, and the wastewater valve is located on one side of the central axis surface. The space on both sides of the central axis surface of the waterway component is fully utilized, so as to reduce the volume of the waterway plate, and further reduce the volume of the whole water purifier. BRIEF DESCRIPTION OF DRAWINGS

[0078] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0079] Figure 1 The structural schematic diagram of the water purifier provided in the embodiments of the present application is shown in the figure.

[0080] Figure 2 The partial structural schematic diagram of the filter core assembly in an embodiment of the present application is shown in the figure.

[0081] Figure 3 The sectional view of the filter core assembly is shown in the figure. Figure 2

[0082] The partial exploded view of the filter core assembly is shown in the figure. Figure 4 Figure 2 The partial enlarged view of the waterway plate in an embodiment of the present application is shown in the figure.

[0083] Figure 5 The partial structural schematic diagram of the waterway plate in an embodiment of the present application is shown in the figure.

[0084] Figure 6 The structural schematic diagram of the pre-treatment filter core in an embodiment of the present application is shown in the figure.

[0085] Figure 7 The reference signs are explained as follows:

[0086] The reference signs are explained as follows:

[0087] ​1000, water purifier; 100, filter cartridge assembly; 110, waterway board; 111, board body; 112, filter cartridge mounting seat; 1121, first mounting seat; 1122, second mounting seat; 1123, third mounting seat; 1124, fourth mounting seat; 1125, fifth mounting seat; 112a, seat body; 112b, rotating piece; 112c, transmission part; 112d, mounting groove; 112e, guide convex part; 112f, limiting convex part; 112g, avoiding channel; 112h, guide inclined surface; 112i, positioning groove; 113, waterway configuration piece; 1131, waterway; 113a, first flow channel; 113b, second flow channel; 113c, third flow channel; 113d, fourth flow channel; 113e, fifth flow channel; 113f, waste water channel; 113g, sixth flow channel; 113h, seventh flow channel; 113i, eighth flow channel; 113j, avoiding groove; 113k, water blocking part; 114, central axis surface; 115, accommodating groove; 116, cover body; 100a, pre-treatment filter cartridge; 101a, filter cartridge main body; 102a, driving part; 103a, guide part; 104a, positioning part; 100b, reverse osmosis filter cartridge; 100c, PP cotton filter cartridge; 100d, post-treatment filter cartridge; 100e, mineralization filter cartridge; 120, flow meter; 130, circuit board; 140, three-way valve; 150, pressure tank; 160, one-way valve; 170, pressure pipe; 180, waste water valve; 200, shell; 300, decorative plate. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0089] Please refer to Figures 1-2 The embodiment of the present application provides a filter cartridge assembly 100 and a water purifier 1000, wherein the filter cartridge assembly 100 comprises a waterway board 110, a pre-treatment filter cartridge 100a, a reverse osmosis filter cartridge 100b and a waste water valve 180.

[0090] Please refer to Figure 2 The waterway board 110 comprises a board body 111, a plurality of filter cartridge mounting seats 112 arranged on the board body 111 and a waterway configuration piece 113. The board body 111 and the filter cartridge mounting seat 112 can be integrally formed, or the board body 111 and the filter cartridge mounting seat 112 can be detachably connected, which is not specifically limited herein. The board body 111 can be made of various materials. The board body 111 can be made of metal material, or the board body 111 can be made of relatively hard plastic material, which is not specifically limited herein.

[0091] Please refer to Figure 3The central axes of the plurality of filter element mounting seats 112 define a central axial surface 114, and the plurality of filter element mounting seats 112 at least includes a first mounting seat 1121 and a second mounting seat 1122. It can be understood that the number of filter element mounting seats 112 is at least two, one of which is the first mounting seat 1121, and the other of which is the second mounting seat 1122. The filter element mounting seat 112 can also include a third mounting seat 1123, a fourth mounting seat 1124, etc., which is not specifically limited here. It should be noted that each filter element mounting seat 112 is located on the central axial surface 114, and it can be understood that the plurality of filter element mounting seats 112 are arranged in the same direction.

[0092] The filter element mounting seat 112 can be made of metal material, and the filter element mounting seat 112 can also be made of relatively hard plastic material, which is not specifically limited here. The shape of the filter element mounting seat 112 can be cylindrical, the filter element mounting seat 112 can also be a boss, and the filter element mounting seat 112 can also be other shapes, as long as it matches the corresponding filter element, which is not specifically limited here.

[0093] Please refer to Figure 4 The waterway component 113 has a waterway 1131 that sequentially communicates the plurality of filter element mounting seats 112. The waterway component 113 can be made of metal material, and the waterway component 113 can also be made of relatively hard plastic material, which is not specifically limited here. The waterway component 113 can be integrally formed with the filter element mounting seat 112, and the waterway component 113 can also be detachably connected with the filter element mounting seat 112, which is not specifically limited here. Preferably, the waterway component 113 is integrally formed with the filter element mounting seat 112, so that water in the waterway 1131 can be prevented from leaking out through the gap between the waterway component 113 and the filter element mounting seat 112.

[0094] Please refer to Figure 4 The pre-treatment filter element 100a is coaxially mounted with the first mounting seat 1121 to access the waterway 1131. The pre-treatment filter element 100a can be one or more of a stainless steel filter, a PP cotton filter, a ceramic filter, a compressed filter, and an activated carbon filter, which is not specifically limited here. The pre-treatment filter element 100a can remove visible impurities such as silt, rust, and insect eggs in water. The pre-treatment filter element 100a can be mounted on the first mounting seat 1121 in many ways. The pre-treatment filter element 100a can be inserted into the first mounting seat 1121, and the pre-treatment filter element 100a can also be rotatably buckled to the first mounting seat 1121, which is not specifically limited here.

[0095] Please refer toFigure 4 The reverse osmosis filter 100b is coaxially installed with the second mounting seat 1122 to access the water channel 1131, and is located downstream of the pretreatment filter 100a in the water flow direction. It can be understood that the tap water first passes through the pretreatment filter 100a before entering the reverse osmosis filter 100b. The reverse osmosis filter 100b can be composed of one or more of cellulose acetate, polyamide, etc. The main functions of the reverse osmosis filter 100b include filtering microorganisms, removing suspended solids, removing organic matter, removing heavy metals, etc., thereby effectively purifying water quality and ensuring the safety and hygiene of the water quality. There are many ways to install the reverse osmosis filter 100b in the second mounting seat 1122. The reverse osmosis filter 100b can be installed in the second mounting seat 1122 by plug-in, or can be installed in the second mounting seat 1122 by rotating and buckling, which is not specifically limited here.

[0096] Please refer to Figure 4 The wastewater valve 180 is located on one side of the central axis surface 114. The wastewater valve 180 is arranged on the water channel component 113 and communicates with the wastewater outlet of the reverse osmosis filter 100b through the water channel 1131, allowing the wastewater of the reverse osmosis filter 100b to flow out of the water outlet of the water channel plate 110 in one direction only. Part of the water will flush away the minerals and pollutants deposited on the membrane surface of the reverse osmosis filter 100b, and will be discharged from the water outlet of the water channel plate 110 through the wastewater outlet of the reverse osmosis filter 100b and the wastewater pipeline, thereby ensuring that the water production and desalination of the reverse osmosis filter 100b do not decrease, and ensuring the filtering effect. The wastewater valve 180 can prevent the wastewater of the water outlet of the water channel plate 110 from flowing back into the reverse osmosis filter 100b.

[0097] The filter assembly 100 and the water purifier 1000 in the embodiments of the present application arrange the wastewater valve 180 on the water channel component 113, and the wastewater valve 180 is located on one side of the central axis surface 114. The space on both sides of the central axis surface 114 of the water channel component 113 is fully utilized, thereby reducing the volume of the water channel plate 110, and further reducing the overall volume of the water purifier 1000.

[0098] Please refer to Figure 1 The filter assembly 100 further comprises a pressure tank 150 and a one-way valve 160. The pressure tank 150 communicates with the water outlet of the reverse osmosis filter 100b through the water channel 1131, and stores the water filtered by the reverse osmosis filter 100b when the water purifier 1000 stops discharging water. The more water in the pressure tank 150, the greater the pressure generated, and vice versa.

[0099] Considering that the slow filtering efficiency of the reverse osmosis filter 100b can result in low water outlet efficiency of the water purifier 1000, by arranging the pressure tank 150 downstream of the reverse osmosis filter 100b, the pressure tank 150 can store the water filtered by the reverse osmosis filter 100b, and when the water purifier 1000 resumes water outlet, the pressure tank 150 can quickly supply water to the user, thereby improving the water outlet efficiency of the water purifier 1000.

[0100] The pressure tank 150 and the water channel 1131 can be connected in many ways, for example, the water channel structure 113 has an external interface connected with the water channel 1131, and the pressure tank 150 is connected with the external interface through an external pipe, and for example, the pressure tank 150 is directly installed on the water channel structure 113, and the water inlet and outlet of the pressure tank 150 are directly connected with the water channel 1131, which is not limited here. Since the pressure tank 150 has a large volume, when the pressure tank 150 is directly installed on the water channel structure 113, the water channel structure 113 needs to have a large volume to provide sufficient installation space for the pressure tank 150. Therefore, preferably, the pressure tank 150 is connected with the water channel 1131 through an external pipe, so that the user can place the pressure tank 150 according to the actual needs, thereby facilitating the user to place the water purifier 1000.

[0101] Please refer to Figure 3 The one-way valve 160 is arranged between the reverse osmosis filter 100b and the pressure tank 150, and only allows the water of the reverse osmosis filter 100b to flow to the pressure tank 150 in one direction. The one-way valve 160 can prevent the pressure of the pressure tank 150 from affecting the reverse osmosis filter 100b. The one-way valve 160 can be arranged in many positions on the water channel structure 113, and the one-way valve 160 can be arranged in the water channel 1131 or on the outer circumferential side of the water channel structure 113, which is not limited here. Preferably, the one-way valve 160 is arranged on the water channel structure 113 and located on the side away from the three-way valve 140 of the central axial surface 114, so that the space on both sides of the central axial surface 114 of the water channel structure 113 can be fully utilized, and more space can be provided for the installation of the three-way valve 140 and the one-way valve 160, thereby facilitating the assembly of the filter assembly 100.

[0102] Please refer to Figure 3The filter element assembly 100 further comprises a three-way valve 140, which is installed on the water channel component 113 and located on one side of the central axis surface 114. The first water inlet of the three-way valve 140 is communicated with the water outlet of the pre-treatment filter element 100a through the water channel 1131. The water outlet of the three-way valve 140 is communicated with the water inlet of the reverse osmosis filter element 100b through the water channel 1131. The pressure tank 150 is communicated with the second water inlet of the three-way valve 140 through the water channel 1131. Since the pressure tank 150 is communicated with the second water inlet of the three-way valve 140, the pressure of the pressure tank 150 is the same as the pressure of the second water inlet of the three-way valve 140.

[0103] The installation position of the three-way valve 140 can be various. The three-way valve 140 can be located on the side of the first mounting seat 1121 away from the second mounting seat 1122. The three-way valve 140 can also be located on the side of the second mounting seat 1122 away from the first mounting seat 1121. The three-way valve 140 can also be located between the first mounting seat 1121 and the second mounting seat 1122. Preferably, the three-way valve 140 is located between the first mounting seat 1121 and the second mounting seat 1122. In this way, the length of the water channel 1131, which is communicated between the first water inlet of the three-way valve 140 and the pre-treatment filter element 100a, and the length of the water channel 1131, which is communicated between the water outlet of the three-way valve 140 and the water inlet of the reverse osmosis filter element 100b, can be shortened. Thus, the volume of the water channel component 113 can be reduced, and the volume of the water purifier 1000 can be further reduced.

[0104] The three-way valve 140 can be installed on the water channel component 113 in various ways. The three-way valve 140 can be installed on the water channel component 113 by screw connection. The three-way valve 140 can also be installed on the water channel component 113 by buckling. The specific installation manner is not limited herein.

[0105] It should be noted that when the pressure of the second water inlet of the three-way valve 140 is greater than the pressure of the first water inlet of the three-way valve 140, the three-way valve 140 will disconnect the communication relationship between the first water inlet and the water outlet. When the pressure of the second water inlet of the three-way valve 140 is less than the pressure of the first water inlet of the three-way valve 140, the three-way valve 140 will restore the communication relationship between the first water inlet and the water outlet.

[0106] When the water purifier 1000 stops water output, the filter element assembly 100 will continue to filter tap water under the influence of the tap water pressure. At this time, the pressure of the first water inlet of the three-way valve 140 is the tap water pressure. The tap water will enter the pressure tank 150 in sequence through the pre-treatment filter element 100a, the three-way valve 140 and the reverse osmosis filter element 100b. The water stored in the pressure tank 150 gradually increases, so that the pressure in the pressure tank 150 gradually increases. When the water pressure in the pressure tank 150 is greater than the tap water pressure, the three-way valve 140 will disconnect the communication relationship between the first water inlet and the water outlet.

[0107] When the water purifier 1000 resumes water output, the pressure tank 150 will flow the stored water into the water channel 1131, and the pressure tank 150 gradually reduces the stored water, so that the pressure in the pressure tank 150 gradually decreases, the pressure of the second water inlet of the three-way valve 140 is less than that of the first water inlet, the three-way valve 140 restores the communication relationship between the first water inlet and the water outlet, and the filter element assembly 100 is driven by the water pressure of tap water to filter the tap water.

[0108] In this way, the three-way valve 140 is arranged on the water channel structure 113, and the three-way valve 140 is located on one side of the central axis surface 114. The space on both sides of the central axis surface 114 of the water channel structure 113 is fully utilized, thereby reducing the volume of the water channel plate 110, and further reducing the volume of the water purifier 1000. Further, by arranging the pressure tank 150 downstream of the reverse osmosis filter element 100b, the water output efficiency of the water purifier 1000 is increased. At the same time, the three-way valve 140 cooperates with the pressure tank 150 to realize the on-off of the water channel 1131, so as to avoid the continuous water inlet of the pressure tank 150, which causes the pressure in the pressure tank 150 to be too high, resulting in the rupture of the pressure tank 150 or the water channel structure 113 due to high pressure, thereby improving the reliability of the whole machine.

[0109] Further, the wastewater valve 180 and the three-way valve 140 are located on the same side of the central axis surface 114. It can be understood that the wastewater valve 180 and the three-way valve 140 are located on one side of the central axis surface 114, and the check valve 160 is located on the other side of the central axis surface 114. In this way, the space on the side of the central axis surface 114 where the wastewater valve 180 is arranged can be fully utilized, thereby reducing the volume of the filter element assembly 100, and at the same time, the check valve 160 and the three-way valve 140 can be avoided. Interference, thereby facilitating the installation of the check valve 160, the three-way valve 140 and the wastewater valve 180 on the water channel structure 113.

[0110] The filter element assembly 100 is provided with a pressure pipe 170 to communicate the pressure tank 150 with the second water inlet, one end of the pressure pipe 170 is communicated with the water outlet of the one-way valve 160 and the pressure tank 150, and the other end of the pressure pipe 170 is communicated with the second water inlet of the three-way valve 140. Considering that the pressure pipe 170 needs to cross the second mounting seat 1122 first to be communicated with the three-way valve 140, and the connection positions of the pressure pipe 170 and the three-way valve 140 are all located on the same side of the middle axial surface 114 where the three-way valve 140 is arranged, which will cause the side of the middle axial surface 114 where the three-way valve 140 is arranged to be relatively compact and complicated. Therefore, the pressure pipe 170 is installed on the water channel component 113 and located on the side of the middle axial surface 114 away from the three-way valve 140. At this time, the first water inlet, the second water inlet and the water outlet of the three-way valve 140 are all arranged on the surface of the three-way valve 140 facing the middle axial surface 114. In this way, the space of the water channel component 113 on both sides of the middle axial surface 114 can be fully utilized, and more space can be provided for the installation of the three-way valve 140 and the pressure pipe 170, thereby facilitating the assembly of the filter element assembly 100.

[0111] Further, referring to Figure 3 , the one-way valve 160 and the pressure pipe 170 are partially stacked and spaced apart in the vertical direction. In this way, the space of the pressure pipe 170 in the vertical direction can be fully utilized, thereby reducing the volume of the filter element assembly 100.

[0112] Specifically, referring to Figure 3 , the three-way valve 140 is located on the side of the second mounting seat 1122 close to the first mounting seat 1121, the one-way valve 160 and the waste water valve 180 are respectively located on both sides of the middle axial surface 114, and the one-way valve 160 and the waste water valve 180 are both located on the side of the second mounting seat 1122 away from the first mounting seat 1121. It can be understood that the second mounting seat 1122 is located between the three-way valve 140 and the waste water valve 180. In this way, the space of the water channel component 113 on both sides of the middle axial surface 114, and the space of the second mounting seat 1122 on both sides in the direction close to or away from the first mounting seat 1121 can be fully utilized, thereby reducing the volume of the filter element assembly 100.

[0113] Please refer to Figures 3-4In some embodiments of the present application, the plurality of filter element mounting seats 112 further comprises a fourth mounting seat 1124, and the filter element assembly 100 further comprises a post-treatment filter element 100d, which is coaxially mounted with the fourth mounting seat 1124 to access the water channel 1131, and downstream of the reverse osmosis filter element 100b in the water flow direction. In this way, by arranging the post-treatment filter element 100d, the substances such as color, odor and taste in the water are removed, and the macromolecular organic matter in the water is also adsorbed, thereby further improving the filtering effect of the water purifier 1000. The post-treatment filter element 100d can be a granular activated carbon filter element, and the post-treatment filter element 100d can also be a compressed activated carbon filter element, which is not specifically limited here.

[0114] Please refer to Figure 4 In this way, the distance between the water outlet of the one-way valve 160 and the second water outlet of the three-way valve 140 is reduced, thereby reducing the length of the pressure pipe 170, and further reducing the volume of the filter element assembly 100.

[0115] In this way, the distance between the water outlet of the one-way valve 160 and the second water outlet of the three-way valve 140 is reduced, thereby reducing the length of the pressure pipe 170, and further reducing the volume of the filter element assembly 100.

[0116] Please refer to Figure 4 In some embodiments of the present application, the plurality of filter element mounting seats 112 further comprises a fifth mounting seat 1125, and the filter element assembly 100 further comprises a mineralization filter element 100e, which is coaxially mounted with the fifth mounting seat 1125 to access the water channel 1131, and downstream of the post-treatment filter element 100d in the water flow direction. In this way, the water quality can be further improved by the mineralization filter element 100e.

[0117] The main function of the mineralization filter element 100e is to supplement minerals and improve water quality. In addition, the mineralization filter element 100e also has the function of adjusting the pH value of the water. By adjusting the pH value of the water to a slightly alkaline environment, the mineralization filter element 100e helps to improve the taste and nutritional value of the water, making it more suitable for human health needs. Such treated water is not only healthier, but also has better penetration, diffusion, solubility, etc., thereby improving the overall quality of the water.

[0118] The mineralization filter element 100e is mainly a medical stone filter element. The medical stone filter element is a kind of compound mineral or medicinal rock which is non-toxic and harmless to organisms and has certain biological activity. In addition to the common Ca, Mg, Si, Al, Fe, K and Na, it also contains a small amount of rare elements, rare earth elements and radioactive elements. The medical stone has the properties of adsorption, solubility, PH regulation, biological activity and mineralization.

[0119] Referring to Figure 3 In some embodiments of the present application, the filter element assembly 100 further comprises a flow meter 120, which is installed on the waterway structure 113 to access the waterway 1131, and along the water flow direction, the flow meter 120 is located upstream of the pre-treatment filter element 100a, and the central axis surface 114 intersects the flow meter 120. In this way, the flow meter 120 accesses the waterway 1131 to detect the flow of the waterway 1131, so that it can be determined whether the filter element needs to be replaced according to the detection result, and the space in the waterway 1131 can be fully utilized to reduce the volume of the filter element assembly 100. The flow meter 120 and the circuit board 130 can be electrically connected by wires, and the flow meter 120 and the circuit board 130 can also be electrically connected by a wireless connection. Preferably, the flow meter 120 and the circuit board 130 can also be electrically connected by a wireless connection, which can prevent the water in the waterway 1131 from affecting the circuit board 130.

[0120] Further, the filter element assembly 100 further comprises an alarm and a circuit board 130, the circuit board 130 is electrically connected with the flow meter 120 and the alarm, and the circuit board 130 can control the alarm to work according to the detection result of the flow meter 120. In this way, the circuit board 130 can determine through the detection structure of the flow meter 120, when the flow detected by the flow meter 120 reaches the preset value, the circuit board 130 will control the alarm to work to prompt the user to replace the filter element of the filter element assembly 100.

[0121] Specifically, the filter element assembly 100 further comprises a battery, which is electrically connected with the circuit board 130, and the battery is used to power the circuit board 130, the flow meter 120 and the alarm. In this way, the circuit board 130 is powered by the battery, so that the filter element assembly 100 does not need to be externally connected to the power supply, thereby improving the practicability of the filter element assembly 100. There are many types of batteries, and the battery can be a lithium ion button type, or a lithium manganese button type, which is not limited here.

[0122] Referring to Figure 4In some embodiments of the present application, the waterway plate 110 has a receiving groove 115 located at one side of the central axial surface 114, and the circuit board 130, the alarm and the battery are all installed in the receiving groove 115. In this way, the waterway plate 110 can protect the circuit board 130, the alarm and the battery. The shape of the receiving groove can be cylindrical or square, which is not limited here.

[0123] Specifically, referring to Figure 3 , the receiving groove 115 is arranged adjacent to the flow meter 120, so that the circuit board 130 can better receive the detection results of the flow meter 120.

[0124] Further, referring to Figure 4 , the filter element assembly 100 further comprises a cover 116 covering the opening of the receiving groove 115 to seal the receiving groove 115. In this way, the cover 116 and the receiving groove 115 cooperate to seal and protect the circuit board 130, thereby avoiding the water in the waterway 1131 from affecting the circuit board 130 and causing the circuit in the circuit board 130 to be short-circuited and damaged.

[0125] Referring to Figure 2 , in some embodiments of the present application, the plurality of filter element mounting seats 112 further comprise a third mounting seat 1123, and the filter element assembly 100 further comprises a PP cotton filter element 100c coaxially installed with the third mounting seat 1123 to access the waterway 1131, and along the water flow direction, the PP cotton filter element 100c is located upstream of the flow meter 120. In this way, the PP cotton filter element 100c can filter large particles in the water, thereby avoiding the large particles in the water from affecting the flow meter 120.

[0126] Specifically, referring to Figures 3-4The waterway 1131 includes a first flow channel 113a, a second flow channel 113b, a third flow channel 113c, a fourth flow channel 113d, a fifth flow channel 113e, a sixth flow channel 113g, a seventh flow channel 113h, an eighth flow channel 113i, and a wastewater passage 113f. One end of the first flow channel 113a is in communication with the water inlet of the waterway plate 110, and the other end of the first flow channel 113a is in communication with the water inlet of the PP cotton filter element 100c through the third mounting seat 1123. The water outlet of the PP cotton filter element 100c is in communication with the water inlet of the flow meter 120 through the third mounting seat 1123. One end of the second flow channel 113b is in communication with the water outlet of the flow meter 120, and the other end of the second flow channel 113b is in communication with the water inlet of the pretreatment filter element 100a through the first mounting seat 1121. One end of the third flow channel 113c is in communication with the water outlet of the pretreatment filter element 100a through the first mounting seat 1121, and the other end of the third flow channel 113c is in communication with the first water inlet of the three-way valve 140. One end of the fourth flow channel 113d is in communication with the water outlet of the three-way valve 140, and the other end of the fourth flow channel 113d is in communication with the water inlet of the reverse osmosis filter element 100b through the second mounting seat 1122. One end of the fifth flow channel 113e is in communication with the water outlet of the reverse osmosis filter element 100b through the second mounting seat 1122, and the other end of the fifth flow channel 113e is in communication with the water inlet of the one-way valve 160. One end of the sixth flow channel 113g is in communication with the water outlet of the one-way valve 160, and the other end of the sixth flow channel 113g is in communication with the pressure tank 150 and the water inlet of the post-treatment filter element 100d through the fourth mounting seat 1124, and is in communication with the second water inlet of the three-way valve 140 through the pressure pipe 170. One end of the seventh flow channel 113h is in communication with the water outlet of the post-treatment filter element 100d through the fourth mounting seat 1124, and the other end of the seventh flow channel 113h is in communication with the water inlet of the mineralization filter element 100e through the fifth mounting seat 1125. One end of the eighth flow channel 113i is in communication with the water outlet of the mineralization filter element 100e through the fifth mounting seat 1125, and the other end of the eighth flow channel 113i is in communication with the water outlet of the waterway plate 110. One end of the wastewater passage 113f is in communication with the wastewater outlet of the reverse osmosis filter element 100b through the second mounting seat 1122, and the other end of the wastewater passage 113f is in communication with the wastewater valve 180.

[0127] When the water purifier 1000 starts to produce water, the water in the pressure tank 150 will enter the post-treatment filter 100d through the sixth flow channel 113g, and then sequentially pass through the seventh flow channel 113h, the mineralization filter 100e, and the eighth flow channel 113i to be discharged from the water outlet of the waterway board 110.

[0128] When the water purifier 1000 starts to produce water, the water in the pressure tank 150 will enter the post-treatment filter 100d through the sixth flow channel 113g, and then sequentially pass through the seventh flow channel 113h, the mineralization filter 100e, and the eighth flow channel 113i to be discharged from the water outlet of the waterway board 110.

[0129] When the water purifier 1000 starts to produce water, the water in the pressure tank 150 will enter the post-treatment filter 100d through the sixth flow channel 113g, and then sequentially pass through the seventh flow channel 113h, the mineralization filter 100e, and the eighth flow channel 113i to be discharged from the water outlet of the waterway board 110.

[0130] Generally, the post-treatment filter 100d adopts an activated carbon filter, which may have a slight carbon powder phenomenon when it is just used. The sixth flow channel 113g is connected to the post-treatment filter 100d and the pressure tank 150, so that the pressure tank 150 only stores the pure water filtered by the reverse osmosis filter 100b, thereby avoiding the carbon powder in the water filtered by the post-treatment filter 100d from remaining in the pressure tank 150 to affect the subsequent water quality. Meanwhile, the post-treatment filter 100d is arranged downstream of the pressure tank 150, so that the post-treatment filter 100d can play a role in deodorizing the water discharged from the pressure tank 150.

[0131] Please refer to Figures 3-4 , considering that the waste water outlet of the reverse osmosis filter 100b is located on the central axis of the reverse osmosis filter 100b, the central axis surface 114 transversely intersects the second flow channel 113b, the third flow channel 113c, the fourth flow channel 113d, the waste water passage 113f and the seventh flow channel 113h; the fifth flow channel 113e is located on the side of the central axis surface 114 where the one-way valve 160 is arranged. In this way, the space of the water channel structure 113 on the central axis surface 114 is fully utilized, and the fifth flow channel 113e is located on the side of the central axis surface 114 where the one-way valve 160 is arranged, thereby reducing the distance between the one-way valve 160 and the fifth flow channel 113e, effectively reducing the length of the fifth flow channel 113e, and facilitating the connection between the one-way valve 160 and the fifth flow channel 113e.

[0132] Further, please refer to Figure 5 , the inner wall surface of the sixth flow channel 113g close to the post-treatment filter 100d is concavely provided with an avoiding groove 113j, the groove bottom of the avoiding groove 113j is communicated with the water inlet of the post-treatment filter 100d, and the avoiding groove 113j is located between the connecting port of the water channel 1131 connected to the pressure tank 150 and the one-way valve 160. In this way, when the water purifier 1000 starts to discharge water, the water flowing into the sixth flow channel 113g through the one-way valve 160 will first enter the avoiding groove 113j, and the water of the pressure tank 150 will also first enter the avoiding groove 113j, thereby avoiding the water flowing into the sixth flow channel 113g through the one-way valve 160 and the water of the pressure tank 150 from affecting each other to cause the water to be unable to smoothly enter the post-treatment filter 100d.

[0133] Preferably, the inner wall surface of the sixth flow channel 113g is further convexly provided with two water blocking portions 113k, and the avoiding groove 113j is located between the two water blocking portions 113k, so that the water of the pressure tank 150 and the water flowing into the sixth flow channel 113g through the one-way valve 160 will enter the avoiding groove 113j after crossing the two water blocking portions 113k, respectively, thereby further avoiding the water flowing into the sixth flow channel 113g through the one-way valve 160 and the water of the pressure tank 150 from affecting each other.

[0134] In some embodiments of the present application, the distance between the central axes of two adjacent filter seat 112 is a, wherein 57mm≤a≤141mm. In this way, the volume of the filter assembly 100 can be reduced, and preferably the distance between the central axes of two adjacent filter seat 112 is 82.5mm.

[0135] For a better understanding of the present application, reference will be made to the following drawings: Figures 6-7 In some embodiments of the present application, the pre-treatment filter 100a comprises a filter body 101a and a driving part 102a, the driving part 102a is installed on the filter body 101a, the filter body 101a can be integrally formed with the driving part 102a, or the filter body 101a can be detachably connected with the driving part 102a, which is not specifically limited here.

[0136] Each filter seat 112 has the same structure, and it can be understood that the structures of the first seat 1121, the second seat 1122, the third seat 1123, the fourth seat 1124, and the fifth seat 1125 are the same. Taking the first seat 1121 as an example, the first seat 1121 comprises a seat body 112a, a rotating part 112b, and a transmission part 112c, the seat body 112a is in communication with the waterway 1131, the rotating part 112b is rotatably installed on the seat body 112a to communicate or block the waterway 1131, and the transmission part 112c is arranged on the rotating part 112b; wherein the driving part 102a can be inserted and matched with the corresponding transmission part 112c to drive the rotating part 112b to rotate. In this way, when the user replaces the pre-treatment filter 100a, the driving part 102a will drive the transmission part 112c to move to drive the rotating part 112b to rotate to block the waterway 1131, thereby achieving the disassembly of the filter and stopping the water outlet. When the user installs the pre-treatment filter 100a, the driving part 102a of the pre-treatment filter 100a is inserted and matched with the transmission part 112c of the rotating part 112b, and then the pre-treatment filter 100a is rotated, the driving part 102a will drive the transmission part 112c to move to drive the rotating part 112b to rotate to communicate the waterway 1131.

[0137] Further, for a better understanding of the present application, reference will be made to the following drawings: Figures 6-7 The pre-treatment filter 100a further comprises a guide part 103a, the guide part 103a is installed on the filter body 101a, the filter body 101a can be integrally formed with the guide part 103a, or the filter body 101a can be detachably connected with the guide part 103a, which is not specifically limited here.

[0138] The seat body 112a is provided with a mounting groove 112d, the rotating piece 112b is rotatably mounted at the groove bottom of the mounting groove 112d, and the transmission part 112c is located at the surface of the rotating piece 112b which is away from the groove bottom of the mounting groove 112d. The shape of the mounting groove 112d can be various, the mounting groove 112d can be cylindrical, or the mounting groove 112d can be boss-shaped, as long as it does not affect the rotation of the rotating piece 112b, and no specific limitation is made here. The rotating piece 112b is arranged at the groove bottom of the mounting groove 112d, so that the driving part 102a of the pre-treatment filter element 100a needs to extend into the mounting groove 112d to cooperate with the transmission part 112c of the rotating piece 112b, so that the seat body 112a can protect the rotating piece 112b and the driving part 102a.

[0139] The first mounting seat 1121 further comprises a guide convex part 112e, which is convexly arranged on the groove wall of the mounting groove 112d and extends along the circumferential direction of the mounting groove 112d, and the guide part 103a can extend into the space between the guide convex part 112e and the groove bottom of the mounting groove 112d. In this way, when the pre-treatment filter element 100a rotates, the guide part 103a is limited in the direction of the central axis of the pre-treatment filter element 100a by the guide convex part 112e and the groove bottom of the mounting groove 112d, so that the guide part 103a can only move along the extension direction of the guide convex part 112e (i.e. the circumferential direction of the mounting groove 112d), thereby facilitating user operation. At the same time, after the pre-treatment filter element 100a is installed, the pre-treatment filter element 100a can be limited by the cooperation between the guide part 103a and the guide convex part 112e, so that the pre-treatment filter element 100a is installed on the seat body 112a.

[0140] Please refer to Figures 6-7 , considering that if the rotating direction of the pre-treatment filter element 100a is not limited, the user cannot determine whether the pre-treatment filter element 100a is installed to the specified position, therefore, the first mounting seat 1121 further comprises a limiting convex part 112f, one end of the limiting convex part 112f is connected with one end of a guide convex part 112e in the circumferential direction of the mounting groove 112d, and the other end of the limiting convex part 112f extends along the axial direction of the mounting groove 112d towards the groove bottom of the mounting groove 112d. In this way, when the pre-treatment filter element 100a is installed, the user rotates the pre-treatment filter element 100a until the guide part 103a of the pre-treatment filter element 100a abuts against the limiting convex part 112f, thereby facilitating user operation.

[0141] Specifically, please refer to Figures 6-7, the number of the guide portions 103a of the pre-treatment filter element 100a is two; the number of the guide protrusions 112e and the limiting protrusions 112f is both two, the two guide protrusions 112e are arranged at intervals in the circumferential direction of the installation groove 112d to form two avoiding channels 112g, and the guide protrusions 112e and the limiting protrusions 112f are arranged one by one; the limiting protrusion 112f is arranged at the end of the corresponding guide protrusion 112e away from the other limiting protrusion 112f. In this way, when the pre-treatment filter element 100a is installed, the pre-treatment filter element 100a is first inserted into the installation groove 112d along the direction of the central axis of the first mounting seat 1121, the guide portion 103a passes through the avoiding channel 112g, and the guide portion 103a is limited by the limiting protrusion 112f on one side in the circumferential direction of the installation groove 112d, so that the pre-treatment filter element 100a can only rotate in the preset direction, thereby avoiding the user from rotating in the wrong direction to cause the pre-treatment filter element 100a to be not installed in place.

[0142] Further, please refer to Figures 6-7 , the side of the guide protrusion 112e and the limiting protrusion 112f is provided with a guide inclined surface 112h, and the guide inclined surface 112h extends from the direction close to the groove bottom of the installation groove 112d to the direction close to the adjacent avoiding channel 112g. In this way, when the pre-treatment filter element 100a is installed, the pre-treatment filter element 100a is first inserted into the installation groove 112d along the direction of the central axis of the first mounting seat 1121, at this time, the guide portion 103a will abut against the guide inclined surface 112h, thereby guiding the guide portion 103a into the avoiding channel 112g, and at the same time, the rotating direction of the pre-treatment filter element 100a can be prompted, thereby facilitating the user operation.

[0143] Please refer to Figures 6-7In some embodiments of the present application, the guide protrusion 112e is recessed with a positioning groove 112i on one side of the bottom of the corresponding installation slot 112d; the pre-treatment filter element 100a further comprises a positioning portion 104a, which is protruded on the surface of the guide portion 103a towards the guide protrusion 112e; wherein when the first mounting seat 1121 is in communication with the waterway 1131, the positioning portion 104a is inserted and matched with the positioning groove 112i. In this way, after the pre-treatment filter element 100a is installed to the designated position, the positioning portion 104a of the pre-treatment filter element 100a is inserted and matched with the positioning groove 112i, so as to limit the circumference of the pre-treatment filter element 100a, thereby avoiding the pre-treatment filter element 100a from being rotated due to the influence of the external environment and causing the pre-treatment filter element 100a to be separated from the first mounting seat 1121. When disassembling the pre-treatment filter element 100a, the pre-treatment filter element 100a needs to be pushed towards the bottom of the installation slot 112d first, so as to make the positioning portion 104a separated from the positioning groove 112i, then the pre-treatment filter element 100a is rotated, and finally the pre-treatment filter element 100a is withdrawn from the installation slot 112d along the direction of the central axis of the first mounting seat 1121.

[0144] It should be noted that the structures of the PP cotton filter element 100c, the reverse osmosis filter element 100b, the post-treatment filter element 100d and the mineralization filter element 100e are the same as those of the pre-treatment filter element 100a described above, so as to be connected with the corresponding filter element mounting seat 112.

[0145] Please refer to Figure 1 The present application further provides a water purifier 1000, which comprises a shell 200 and the filter element assembly 100 described above, and the shell 200 is arranged on the side of the waterway structure 113 away from the filter element mounting seat 112. The shell 200 can protect the filter element mounting seat 112, and the shell 200 can be made of metal material or hard plastic, which is not limited here. The shell 200 can be installed on the filter element assembly 100 in many ways, such as being connected by screws or being buckled, which is not limited here.

[0146] Please refer to Figure 1In some embodiments of the present application, the water purifier 1000 further comprises a decorative plate 300 mounted on the outer peripheral wall of the shell 200. In this way, the product can be more beautiful, and the outer periphery of the shell 200 is easy to be bumped. The outer periphery of the shell 200 is protected by the decorative plate 300, and the decorative plate 300 is damaged only by replacing the decorative plate 300, thereby reducing the maintenance cost of the water purifier 1000. The decorative plate 300 can be made of metal material, and the decorative plate 300 can also be made of hard plastic, which is not specifically limited here. The decorative plate 300 can be mounted on the shell 200 by screw connection, and the decorative plate 300 can also be mounted on the shell 200 by buckling, which is not specifically limited here.

[0147] Preferably, the outer peripheral wall of the shell 200 is recessed with a mounting groove, and the decorative plate 300 is mounted in the mounting groove. In this way, the decorative plate 300 can be accommodated in the mounting groove, thereby reducing the volume of the water purifier 1000.

[0148] In some embodiments of the present application, the water purifier 1000 further comprises a box body having a mounting cavity. The filter core assembly 100 is mounted in the box body, and the shell 200 is located in the mounting cavity. In this way, the filter core assembly 100 can be protected by the box body. The box body can be made of metal material, and the box body can also be made of hard plastic, which is not specifically limited here. The filter core assembly 100 can be mounted in the mounting cavity by the waterway structure 113, and the filter core assembly 100 can also be mounted in the mounting cavity by the shell 200, which is not specifically limited here.

[0149] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0150] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0151] In the description of the application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0152] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0153] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled in the art person within the technical scope disclosed by the present application can easily think of changes or replacements, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A filter cartridge assembly characterized by, Comprise: A waterway board comprising a plurality of filter cartridge mounting seats and waterway configuration members arranged on the filter cartridge mounting seats, the central axes of the plurality of filter cartridge mounting seats defining a central axis plane, the waterway configuration members having waterways sequentially connecting the plurality of filter cartridge mounting seats, the plurality of filter cartridge mounting seats comprising at least a first mounting seat and a second mounting seat; A pretreatment filter cartridge coaxially mounted with the first mounting seat to access the waterway; A reverse osmosis filter cartridge coaxially mounted with the second mounting seat to access the waterway, and along the water flow direction, the reverse osmosis filter cartridge is located downstream of the pretreatment filter cartridge; A wastewater valve mounted on the waterway configuration member and located on one side of the central axis plane, the wastewater valve being communicated with the wastewater outlet of the reverse osmosis filter cartridge through the waterway, and only allowing the wastewater of the reverse osmosis filter cartridge to flow unidirectionally to the water outlet of the waterway board.

2. The filter cartridge assembly of claim 1, wherein, Further comprising: A pressure tank communicated with the water outlet of the reverse osmosis filter cartridge through the waterway; and A check valve arranged between the reverse osmosis filter cartridge and the pressure tank, only allowing water of the reverse osmosis filter cartridge to flow unidirectionally to the pressure tank.

3. The filter cartridge assembly of claim 2 wherein, The wastewater valve and the check valve are respectively located on both sides of the central axis plane.

4. The filter cartridge assembly of claim 2 wherein, Further comprising: A three-way valve mounted on the waterway configuration member and located on one side of the central axis plane, and a first water inlet of the three-way valve is communicated with the water outlet of the pretreatment filter cartridge through the waterway, and a water outlet of the three-way valve is communicated with the water inlet of the reverse osmosis filter cartridge through the waterway; Wherein, the pressure tank is communicated with a second water inlet of the three-way valve through the waterway.

5. The filter cartridge assembly of claim 4 wherein, The three-way valve is located between the first mounting seat and the second mounting seat.

6. The filter cartridge assembly of claim 5 wherein, The wastewater valve is located between the second mounting seat and the water outlet of the waterway board.

7. The filter cartridge assembly of claim 4 wherein, The wastewater valve and the three-way valve are located on the same side of the central axis plane.

8. The filter cartridge assembly of claim 4 wherein, Further comprising: A pressure pipe mounted on the waterway configuration member and located on the side of the central axis plane away from the three-way valve, and the pressure tank is communicated with the second water inlet through the pressure pipe.

9. The filter cartridge assembly of claim 8 wherein, The check valve and the pressure pipe are partially stacked and spaced apart in the vertical direction.

10. The filter cartridge assembly of claim 8 wherein, The plurality of filter cartridge mounting seats further comprises a fourth mounting seat, and the filter cartridge assembly further comprises: A post-treatment filter cartridge coaxially mounted with the fourth mounting seat to access the waterway, and along the water flow direction, the post-treatment filter cartridge is located downstream of the reverse osmosis filter cartridge; Wherein, the check valve is located between the second mounting seat and the fourth mounting seat; and / or, The wastewater valve is located between the second mounting seat and the fourth mounting seat.

11. The filter cartridge assembly of claim 10 wherein, The plurality of filter cartridge mounting seats further comprises a fifth mounting seat, and the filter cartridge assembly further comprises: A mineralization filter cartridge coaxially mounted with the fifth mounting seat to access the waterway, and along the water flow direction, the mineralization filter cartridge is located downstream of the post-treatment filter cartridge.

12. The filter cartridge assembly of claim 11 wherein, Further comprising: A flow meter mounted on the waterway configuration member to access the waterway, and along the water flow direction, the flow meter is located upstream of the pretreatment filter cartridge, and the central axis plane transversely crosses the flow meter.

13. The filter cartridge assembly of claim 12, wherein, The plurality of filter cartridge mounting seats further comprises a third mounting seat, and the filter cartridge assembly further comprises: A PP cotton filter core is coaxially installed with the third mounting seat to access the water path and is located upstream of the flow meter along the water flow direction.

14. The filter cartridge assembly of claim 13 wherein, The water path comprises: A first flow channel, one end of which is in communication with the water inlet of the water path plate, and the other end is in communication with the water inlet of the PP cotton filter core through the third mounting seat, and the water outlet of the PP cotton filter core is in communication with the water inlet of the flow meter through the third mounting seat; A second flow channel, one end of which is in communication with the water outlet of the flow meter, and the other end is in communication with the water inlet of the pretreatment filter core through the first mounting seat; A third flow channel, one end of which is in communication with the water outlet of the pretreatment filter core through the first mounting seat, and the other end is in communication with the first water inlet of the three-way valve; A fourth flow channel, one end of which is in communication with the water outlet of the three-way valve, and the other end is in communication with the water inlet of the reverse osmosis filter core through the second mounting seat; A fifth flow channel, one end of which is in communication with the water outlet of the reverse osmosis filter core through the second mounting seat, and the other end is in communication with the water inlet of the one-way valve; A wastewater channel, one end of which is in communication with the wastewater outlet of the reverse osmosis filter core through the second mounting seat, and the other end is in communication with the wastewater valve; A sixth flow channel, one end of which is in communication with the water outlet of the one-way valve, and the other end is in communication with the pressure tank, and is in communication with the water inlet of the post-treatment filter core through the fourth mounting seat, and is in communication with the second water inlet of the three-way valve through the pressure pipe; A seventh flow channel, one end of which is in communication with the water outlet of the post-treatment filter core through the fourth mounting seat, and the other end is in communication with the water inlet of the mineralization filter core through the fifth mounting seat; and An eighth flow channel, one end of which is in communication with the water outlet of the mineralization filter core through the fifth mounting seat, and the other end is in communication with the water outlet of the water path plate.

15. The filter cartridge assembly of claim 14, wherein, The central axis plane transversely intersects the second flow channel, the third flow channel, the fourth flow channel, the wastewater channel, and the seventh flow channel; The fifth flow channel is located on one side of the central axis plane where the one-way valve is arranged.

16. The filter cartridge assembly of claim 14, wherein, The sixth flow channel is recessed with a recessed groove near the inner wall surface of the post-treatment filter core, the groove bottom of the recessed groove is in communication with the water inlet of the post-treatment filter core, and the recessed groove is located between the connection port of the water path in communication with the pressure tank and the one-way valve.

17. The filter cartridge assembly of claim 13 wherein, The distance between the central axes of two adjacent filter core mounting seats is a, wherein 57mm≤a≤141mm.

18. The filter cartridge assembly of any of claims 1-17, wherein, The pretreatment filter core comprises a filter core body and a driving part, the driving part is installed on the filter core body, and the structures of each filter core mounting seat are the same; The first mounting seat comprises: A seat body in communication with the water path; A rotating part rotatably installed on the seat body to communicate or block the water path; and A transmission part arranged on the rotating part; Wherein, the driving part can be inserted and matched with the transmission part to drive the rotating part to rotate.

19. The filter cartridge assembly of claim 18 wherein, The pretreatment filter core further comprises a guide part, and the guide part is installed on the filter core body; The seat body is provided with a mounting groove, the rotating part is rotatably installed on the groove bottom of the mounting groove, and the transmission part is located on the surface of the rotating part away from the groove bottom of the mounting groove; The first mounting seat further comprises: A guide protrusion protrudes from a wall of the mounting groove and extends along a circumference of the mounting groove; The guide portion can extend into a space between the guide protrusion and a bottom of the mounting groove.

20. The filter cartridge assembly of claim 19, wherein, The first mounting seat further comprises: A limiting protrusion is connected to one end of the guide protrusion along a circumference of the mounting groove and extends toward the bottom of the mounting groove along an axial direction of the mounting groove.

21. The filter cartridge assembly of claim 20 wherein, The number of the guide portions of the pre-treatment filter element is two. The number of the guide protrusions and the limiting protrusions is both two, and the guide protrusions are arranged at intervals along the circumference of the mounting groove to form two avoiding channels, and the guide protrusions and the limiting protrusions are arranged one by one. The limiting protrusion is arranged at an end of the corresponding guide protrusion away from the other limiting protrusion.

22. The filter cartridge assembly of claim 21 wherein, A guide inclined surface is arranged on a side of the guide protrusion and the limiting protrusion, and the guide inclined surface extends from a direction close to the bottom of the mounting groove toward a direction close to the adjacent avoiding channel.

23. The filter cartridge assembly of claim 19 wherein, A positioning groove is recessed on a side of the guide protrusion toward the bottom of the corresponding mounting groove. The pre-treatment filter element further comprises: A positioning portion protrudes from a surface of the guide portion toward the guide protrusion; When the first mounting seat is in communication with the water path, the positioning portion and the positioning groove are inserted and matched.

24. A water purifier characterized by comprising: It comprises: A shell; and The filter element assembly according to any one of claims 1 to 23; The shell cover is arranged on a side of the water path structure away from the filter element mounting seat.

25. The water purifier of claim 24, wherein, It comprises: A decorative plate is mounted on an outer circumferential wall of the shell.

26. The water purifier of claim 24, wherein It comprises: A box body is provided with a mounting cavity, and the filter element assembly is mounted in the mounting cavity.

Images