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, a pressure tank and a one-way valve, the water path plate comprises a plate body, a plurality of filter element mounting seats and a water path structure part, the plurality of filter element mounting seats comprise a first mounting seat and a second mounting seat, and the first mounting seat and the second mounting seat are arranged on the plate body; an avoiding groove is concavely formed in the inner wall surface of the water path, the groove bottom of the avoiding groove is communicated with a water outlet of the water path plate, 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 pressure tank is communicated with a water outlet of the reverse osmosis filter element through the water path, and the one-way valve is arranged between the reverse osmosis filter element and the pressure tank. The receding groove is located between the connecting port of the waterway communicating pressure tank and the one-way valve. According to the arrangement, when the water purifier begins to discharge water, water in the pressure tank and water flowing out of the one-way valve respectively flow into the avoiding groove from the two sides of the avoiding groove, so that the water can be smoothly discharged from the water outlet of the waterway plate, and the water outlet efficiency of the water purifier is further improved.

Description

TECHNICAL FIELD

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

[0002] At present, the water purifier has been popularized, and the water purifier can deeply filter impurities in water and pipelines to provide relatively clean domestic water for people, thereby better protecting the health of the users.

[0003] In the related art, the filter element assembly is provided with a waterway plate to install multiple filter elements, and is provided with a pressure tank to store water. The waterway plate has a waterway that communicates the multiple filter elements and the pressure tank. The water outlet of the filter element communicates with the pressure tank through a one-way valve. The pressure tank communicates with the water outlet of the waterway plate. The water outlet efficiency of the water purifier is improved through the pressure tank.

[0004] Generally, the inner wall of the waterway directly penetrates to form the water outlet of the waterway plate. This causes the water in the pressure tank to partially flow to the water outlet of the waterway plate and partially flow to the water outlet of the one-way valve, so that the water of the one-way valve cannot flow out smoothly, thereby reducing the water outlet efficiency of the water purifier. SUMMARY

[0005] The present application provides a filter element assembly and a water purifier, which aims to improve the low water outlet efficiency of the water purifier.

[0006] In order to solve the above technical problems, the present application provides a filter element assembly, which comprises:

[0007] A waterway plate comprises a plate body, multiple filter element mounting seats arranged on the plate body, and waterway configuration members arranged on the filter element mounting seats. The waterway configuration members have a waterway that sequentially communicates the multiple filter element mounting seats. The multiple filter element mounting seats at least include a first mounting seat and a second mounting seat. The inner wall surface of the waterway is concavely provided with a relief groove. The groove bottom of the relief groove communicates with the water outlet of the waterway plate.

[0008] A pretreatment filter element is coaxially mounted with the first mounting seat to access the waterway.

[0009] A reverse osmosis filter element is coaxially mounted with the second mounting seat to access the waterway. In the water flow direction, the reverse osmosis filter element is located downstream of the pretreatment filter element.

[0010] A pressure tank communicates with the water outlet of the reverse osmosis filter element through the waterway.

[0011] A one-way valve is arranged between the reverse osmosis filter element and the pressure tank, and only allows the water of the reverse osmosis filter element to unidirectionally flow to the pressure tank.

[0012] The avoiding groove is located between the connecting port of the water path and the one-way valve.

[0013] In some embodiments, the central axes of the plurality of filter element mounting seats define a central axis plane, and the filter element assembly further comprises:

[0014] A post-treatment filter element is coaxially mounted with the fourth mounting seat to access the water path, and is located downstream of the reverse osmosis filter element along the water flow direction.

[0015] The bottom of the avoiding groove is in communication with the water inlet of the post-treatment filter element to communicate the post-treatment filter element with the water outlet of the water path plate.

[0016] In some embodiments, the connecting port of the water path and the one-way valve of the pressure tank are located on opposite sides of the central axis plane, and the central axis plane transversely intersects the avoiding groove.

[0017] In some embodiments, the filter element assembly further comprises:

[0018] A three-way valve is mounted on the water path structure and located on one side of the central axis plane, 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 water path, and a water outlet of the three-way valve is in communication with the water inlet of the reverse osmosis filter element through the water path.

[0019] The pressure tank is in communication with a second water inlet of the three-way valve through the water path.

[0020] In some embodiments, the three-way valve is located between the first mounting seat and the second mounting seat.

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

[0022] A pressure pipe is mounted on the water path structure and located on the side of the central axis plane 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 is mounted on the water path structure and located on the side of the central axis plane away from the three-way valve.

[0024] In some embodiments, the one-way valve and the pressure pipe are partially stacked and spaced apart in the vertical direction.

[0025] In some embodiments, the filter element assembly further comprises:

[0026] A wastewater valve is arranged on the waterway structure and communicates with the wastewater port of the reverse osmosis filter cartridge through the waterway, allowing wastewater of the reverse osmosis filter cartridge to flow to the waterway board drain port in one direction only.

[0027] The wastewater valve and the three-way valve are located on the same side of the central axial surface.

[0028] In some embodiments, the one-way valve is located between the second mounting seat and the fourth mounting seat; and / or,

[0029] The wastewater valve is located between the second mounting seat and the fourth mounting seat.

[0030] In some embodiments, the plurality of filter cartridge mounting seats further comprises a fifth mounting seat, and the filter cartridge assembly further comprises:

[0031] A mineralization filter cartridge is coaxially mounted with the fifth mounting seat to access the waterway, and the mineralization filter cartridge is located downstream of the post-treatment filter cartridge along the water flow direction.

[0032] In some embodiments, the filter cartridge assembly further comprises:

[0033] A flow meter is mounted on the waterway structure to access the waterway, and the flow meter is located upstream of the pre-treatment filter cartridge along the water flow direction, and the central axial surface transversely intersects the flow meter.

[0034] In some embodiments, the plurality of filter cartridge mounting seats further comprises a third mounting seat, and the filter cartridge assembly further comprises:

[0035] A PP cotton filter cartridge is coaxially mounted with the third mounting seat to access the waterway, and the PP cotton filter cartridge is located upstream of the flow meter along the water flow direction.

[0036] In some embodiments, the waterway comprises:

[0037] A first flow channel, one end of which communicates with the water inlet of the waterway board, and the other end thereof communicates with the water inlet of the PP cotton filter cartridge through the third mounting seat, and the water outlet of the PP cotton filter cartridge communicates with the water inlet of the flow meter through the third mounting seat;

[0038] A second flow channel, one end of which communicates with the water outlet of the flow meter, and the other end thereof communicates with the water inlet of the pre-treatment filter cartridge through the first mounting seat;

[0039] A third flow channel, one end of which communicates with the water outlet of the pre-treatment filter cartridge through the first mounting seat, and the other end thereof communicates with the first water inlet of the three-way valve;

[0040] A fourth flow channel, one end of which is in communication with the water outlet of the three-way valve, and the other end of which is in communication with the water inlet of the reverse osmosis filter core through the second mounting seat;

[0041] 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 of which is in communication with the water inlet of the one-way valve;

[0042] 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 of which is in communication with the wastewater valve;

[0043] A sixth flow channel, one end of which is in communication with the water outlet of the one-way valve, and the other end of which is in communication with the pressure tank, and in communication with the water inlet of the post-treatment filter core through the fourth mounting seat, and in communication with the second water inlet of the three-way valve through the pressure pipe;

[0044] 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 of which is in communication with the water inlet of the mineralization filter core through the fifth mounting seat; and

[0045] 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 of which is in communication with the water outlet of the waterway board.

[0046] In some embodiments, 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;

[0047] The fifth flow channel is located on the side of the central axis plane where the one-way valve is arranged.

[0048] In some embodiments, the distance between the central axes of two adjacent filter core mounting seats is a, wherein 57mm≤a≤141mm.

[0049] In some embodiments, the pre-treatment filter core comprises a filter core body and a driving part, the driving part is mounted on the filter core body, and each filter core mounting seat has the same structure;

[0050] The first mounting seat comprises:

[0051] a seat body in communication with the waterway;

[0052] a rotating part rotatably mounted on the seat body to communicate or block the waterway; and

[0053] a transmission part arranged on the rotating part;

[0054] The driving part can be inserted into the transmission part to drive the rotating part to rotate.

[0055] In some embodiments, the pre-treatment filter element further comprises a guide portion, the guide portion is mounted on the filter element body;

[0056] The seat body is provided with a mounting groove, the rotating member is rotatably mounted on the groove bottom of the mounting groove, and the transmission portion is located on the surface of the rotating member facing away from the groove bottom of the mounting groove;

[0057] The first mounting seat further comprises:

[0058] A guide protrusion protrudes from the groove wall of the mounting groove and extends along the circumference of the mounting groove;

[0059] The guide portion can extend into the space between the guide protrusion and the groove bottom of the mounting groove.

[0060] In some embodiments, the first mounting seat further comprises:

[0061] A limiting protrusion, one end of which is connected to one end of the guide protrusion in the circumferential direction of the mounting groove, and the other end extends along the axial direction of the mounting groove towards the groove bottom of the mounting groove.

[0062] In some embodiments, the number of guide portions of the pre-treatment filter element is two;

[0063] 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 avoidance channels, and the guide protrusions and the limiting protrusions are arranged one by one.

[0064] The limiting protrusion is arranged at the end of the corresponding guide protrusion away from the other limiting protrusion.

[0065] In some embodiments, the side of the guide protrusion and the limiting protrusion connected to the guide slope is provided with the guide slope, which extends from the direction close to the groove bottom of the mounting groove to the direction close to the adjacent avoidance channel.

[0066] In some embodiments, the side of the guide protrusion facing the groove bottom of the corresponding mounting groove is recessed with a positioning groove;

[0067] The pre-treatment filter element further comprises:

[0068] A positioning portion protrudes from the surface of the guide portion facing the guide protrusion;

[0069] When the first mounting seat is in communication with the water path, the positioning portion and the positioning groove are inserted and matched.

[0070] The application also provides a water purifier, which comprises:

[0071] The outer casing; and

[0072] The aforementioned filter element assembly;

[0073] The outer casing is located on the side of the water passage structure opposite to the filter element mounting base.

[0074] In some embodiments, the water purifier further includes:

[0075] Decorative panels are installed on the outer peripheral wall of the housing.

[0076] In some embodiments, the water purifier includes:

[0077] The housing has an installation cavity, in which the filter element assembly is installed.

[0078] In this embodiment, a recessed clearance groove is provided on the inner wall of the water circuit. When the water purifier begins to dispense water, the water from the pressure tank and the water flowing from the one-way valve flow into the clearance groove from opposite sides, preventing them from interfering with each other. This allows the water from the pressure tank and the water flowing from the one-way valve to flow smoothly out of the water outlet of the water circuit board, thereby improving the water purifier's dispensing efficiency. Simultaneously, by placing a pressure tank downstream of the reverse osmosis filter element, the water purifier's dispensing efficiency is further improved. Attached Figure Description

[0079] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0080] Figure 1 This is a schematic diagram of the structure of a water purifier provided in an embodiment of this application;

[0081] Figure 2 This is a partial structural schematic diagram of a filter element assembly in one embodiment of this application;

[0082] Figure 3 for Figure 2 Cross-sectional view of the middle filter element assembly;

[0083] Figure 4 for Figure 2 A partial exploded view of the middle filter element assembly;

[0084] Figure 5 This is a partial enlarged view of the water channel plate in one embodiment of this application;

[0085] Figure 6A schematic view of a partial structure of a waterway plate in an embodiment of the present application;

[0086] Figure 7 A schematic view of a structure of a pre-treatment filter element in an embodiment of the present application.

[0087] Legend of reference signs:

[0088] 1000, water purifier; 100, filter element assembly; 110, waterway plate; 111, plate body; 112, filter element 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 protrusion; 112f, limiting protrusion; 112g, avoiding passage; 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, wastewater passage; 113g, sixth flow channel; 113h, seventh flow channel; 113i, eighth flow channel; 113j, avoiding groove; 113k, water blocking part; 114, central axial surface; 115, accommodating groove; 116, cover body; 100a, pre-treatment filter element; 101a, filter element main body; 102a, driving part; 103a, guide part; 104a, positioning part; 100b, reverse osmosis filter element; 100c, PP cotton filter element; 100d, post-treatment filter element; 100e, mineralization filter element; 120, flow meter; 130, circuit board; 140, three-way valve; 150, pressure tank; 160, one-way valve; 170, pressure pipe; 180, wastewater valve; 200, outer shell; 300, decorative plate. DETAILED DESCRIPTION

[0089] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0090] Please refer to Figures 1-2 The embodiment of the present application provides a filter element assembly 100 and a water purifier 1000, wherein the filter element assembly 100 comprises a waterway plate 110, a pre-treatment filter element 100a, a reverse osmosis filter element 100b, a pressure tank 150 and a one-way valve 160.

[0091] Please refer to Figure 2The waterway plate 110 comprises a plate body 111, a plurality of filter element mounting seats 112 arranged on the plate body 111, and a waterway configuring member 113. The plate body 111 and the filter element mounting seats 112 can be integrally formed, or can be detachably connected, which is not specifically limited here. The plate body 111 can be made of various materials, and can be made of metal material or relatively hard plastic material, which is not specifically limited here.

[0092] Please refer to Figure 3 The central axes of the plurality of filter element mounting seats 112 define a central axis plane 114. The plurality of filter element mounting seats 112 at least comprises 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 seats 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 axis plane 114. It can be understood that the plurality of filter element mounting seats 112 are arranged in the same direction.

[0093] The filter element mounting seat 112 can be made of various materials, and can be made of metal material or relatively hard plastic material, which is not specifically limited here. The filter element mounting seat 112 can have various shapes, and can be cylindrical, can be a boss, or can be other shapes, as long as it matches the corresponding filter element, which is not specifically limited here.

[0094] Please refer to Figure 4 The waterway configuring member 113 has a waterway 1131 that sequentially communicates the plurality of filter element mounting seats 112. The waterway configuring member 113 can be made of various materials, and can be made of metal material or relatively hard plastic material, which is not specifically limited here. The waterway configuring member 113 can be integrally formed with the filter element mounting seat 112, or can be detachably connected with the filter element mounting seat 112, which is not specifically limited here. Preferably, the waterway configuring member 113 is integrally formed with the filter element mounting seat 112, so as to avoid water in the waterway 1131 from leaking out through the gap between the waterway configuring member 113 and the filter element mounting seat 112.

[0095] Please refer to Figure 5The inner wall surface of the water channel 1131 is concavely provided with an avoiding groove 113j, and the groove bottom of the avoiding groove 113j is communicated with the water outlet of the water channel plate 110. It can be understood that the avoiding groove 113j extends along the direction of gravity, so that the water flow will be affected by gravity and flow into the avoiding groove 113j first.

[0096] Please refer to Figure 4 The pre-treatment filter element 100a is coaxially installed with the first mounting seat 1121 to access the water channel 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, without specific limitation 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 installed in the first mounting seat 1121 in many ways. The pre-treatment filter element 100a can be installed in the first mounting seat 1121 by plug-in, or can be installed in the first mounting seat 1121 by rotating and buckling, without specific limitation here.

[0097] Please refer to Figure 4 The reverse osmosis filter element 100b is coaxially installed with the second mounting seat 1122 to access the water channel 1131, and is located downstream of the pre-treatment filter element 100a along the water flow direction. It can be understood that the tap water first passes through the pre-treatment filter element 100a before entering the reverse osmosis filter element 100b. The reverse osmosis filter element 100b can be composed of one or more of cellulose acetate and polyamide. The main functions of the reverse osmosis filter element 100b include filtering microorganisms, removing suspended solids, removing organic matter, removing heavy metals and the like, thereby effectively purifying water quality and ensuring the safety and hygiene of water quality. The reverse osmosis filter element 100b can be installed in the second mounting seat 1122 in many ways. The reverse osmosis filter element 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, without specific limitation here.

[0098] Please refer to Figure 1 The pressure tank 150 is communicated with the water outlet of the reverse osmosis filter element 100b and the second water inlet of the three-way valve 140 through the water channel 1131. When the water purifier 1000 stops water output, the pressure tank 150 will store the water filtered by the reverse osmosis filter element 100b. The more water in the pressure tank 150, the greater the pressure generated, and vice versa.

[0099] In view of the slow filtering efficiency of the reverse osmosis filter 100b, which leads to low water outlet efficiency of the water purifier 1000, the pressure tank 150 is arranged downstream of the reverse osmosis filter 100b, so that 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, or 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 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 installed in the water channel 1131 or on the outer periphery of the water channel structure 113, which is not limited here.

[0102] In the embodiment of the present application, the water tank 150 and the one-way valve 160 are arranged in the water channel 1131, and the water tank 150 and the one-way valve 160 are arranged on the outer periphery of the water channel structure 113, which is not limited here.

[0103] Further, the inner wall surface of the water channel 1131 is further 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 in the pressure tank 150 and the water flowing in through the one-way valve 160 can enter the avoiding groove 113j after crossing the two water blocking portions 113k respectively, so that the water flowing out through the one-way valve 160 and the water in the pressure tank 150 can be buffered by the water blocking portions 113k, and the water flowing out through the one-way valve 160 and the water in the pressure tank 150 can better enter the avoiding groove 113j, and further avoid the mutual influence of the water flowing out through the one-way valve 160 and the water in the pressure tank 150, so that the water outlet efficiency of the water purifier is improved.

[0104] Please refer to Figures 3-4 In some embodiments of the present application, the plurality of filter element mounting seats 112 further include a fourth mounting seat 1124, and the filter element assembly 100 further includes a post-treatment filter element 100d, which is coaxially mounted with the fourth mounting seat 1124 to access the water channel 1131, and is located downstream of the reverse osmosis filter element 100b in the water flow direction, wherein the groove bottom of the avoiding groove 113j is in communication with the water inlet of the post-treatment filter element 100d, so as to be in communication with the water outlet of the water channel plate 110 through the post-treatment filter element 100d. In this way, by setting the post-treatment filter element 100d, the foreign color, odor and taste substances in the water are removed, and the macromolecular organic substances in the water are also adsorbed, so as to further improve 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 limited here.

[0105] Further, the connection port of the water channel 1131 in communication with the pressure tank 150 and the one-way valve 160 are located on both sides of the central axis surface 114, and the central axis surface 114 transversely cuts the avoiding groove 113j. In this way, the space on both sides of the central axis surface 114 is fully utilized, so as to reduce the volume of the filter element assembly, and the avoiding groove 113j and the fourth mounting seat 1124 are both transversely cut by the central axis surface 114, so that the avoiding groove 113j and the water inlet of the post-treatment filter element 100d are on the same straight line, thereby facilitating the communication of the avoiding groove 113j with the post-treatment filter element 100d through the fourth mounting seat 1124.

[0106] Preferably, the groove bottom of the avoiding groove 113j and the water inlet of the reverse osmosis filter element 100d are vertically overlapped. In this way, the communication of the avoiding groove 113j with the reverse osmosis filter element 100d is facilitated, and the length of the water channel 1131 is reduced, thereby reducing the volume of the filter element assembly.

[0107] 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, and 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.

[0108] 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, or on the side of the second mounting seat 1122 away from the first mounting seat 1121, or 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, so as to shorten the length of the water channel 1131 communicated between the first water inlet of the three-way valve 140 and the pre-treatment filter element 100a, and shorten the length of the water channel 1131 communicated between the water outlet of the three-way valve 140 and the water inlet of the reverse osmosis filter element 100b, thereby reducing the volume of the water channel component 113, and further reducing the volume of the water purifier 1000.

[0109] The three-way valve 140 can be installed on the water channel component 113 in various ways, such as screw connection or buckling, which is not limited here.

[0110] It should be noted that, 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. 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 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 between the first water inlet and the water outlet.

[0111] When the water purifier 1000 stops water output, the filter element assembly 100 will continue to filter tap water under the influence of tap water pressure. At this time, the pressure of the first water inlet of the three-way valve 140 is the tap water pressure, and 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 between the first water inlet and the water outlet.

[0112] 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 filters tap water under the driving of the tap water pressure.

[0113] 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 axial surface 114. The space on both sides of the central axial surface 114 of the water channel structure 113 is fully utilized, so that the volume of the water channel plate 110 is reduced, and the volume of the water purifier 1000 is further reduced. 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 inflow of the pressure tank 150, the high pressure in the pressure tank 150, and 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.

[0114] Please refer to Figure 3 In some embodiments of the present application, the one-way valve 160 is installed on the water channel structure 113 and located on the side of the central axial surface 114 away from the three-way valve 140. In this way, the space on both sides of the central axial surface 114 of the water channel structure 113 is fully utilized, so that 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 element assembly 100.

[0115] The filter element assembly 100 is provided with the pressure pipe 170 to communicate the pressure tank 150 with the second water inlet. One end of the pressure pipe 170 communicates with the water outlet of the one-way valve 160 and the pressure tank 150, and the other end of the pressure pipe 170 communicates 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 before communicating with the three-way valve 140, and the connection positions of the pressure pipe 170 and the three-way valve 140 are located on the same side of the central axial surface 114 where the three-way valve 140 is arranged, which will cause the side of the central 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 structure 113 and located on the side of the central 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 arranged on the surface of the three-way valve 140 facing the central axial surface 114. In this way, 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 pressure pipe 170, thereby facilitating the assembly of the filter element assembly 100.

[0116] Further, please refer to Figure 3The one-way valve 160 and the pressure pipe 170 are partially stacked and spaced 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 core assembly 100.

[0117] Please refer to Figure 4 In some embodiments of the present application, the filter core assembly 100 further comprises a wastewater valve 180, which is arranged on the water channel structure 113 and communicates with the wastewater outlet of the reverse osmosis filter core 100b through the water channel 1131, allowing only the wastewater of the reverse osmosis filter core 100b to flow to the water outlet of the water channel plate 110 in one direction, and the wastewater valve 180 is located on the same side of the central axis surface 114 as the three-way valve 140. In this way, part of the water can flush away the minerals and pollutants deposited on the membrane surface of the reverse osmosis filter core 100b and be discharged from the system outlet through the wastewater outlet of the reverse osmosis filter core 100b and the wastewater pipeline, thereby ensuring that the water production and desalination of the reverse osmosis filter core 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 to the reverse osmosis filter core 100b.

[0118] Specifically, please refer 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, and the one-way valve 160 and the wastewater valve 180 are respectively located on the two sides of the central axis surface 114, and the one-way valve 160 and the wastewater valve 180 are both located on the side of the second mounting seat 1122 away from the first mounting seat 1121, which can be understood as that the second mounting seat 1122 is located between the three-way valve 140 and the wastewater valve 180. In this way, the space of the water channel structure 113 on both sides of the central axis 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 core assembly 100.

[0119] 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 core assembly 100.

[0120] 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 core assembly 100.

[0121] Please refer to Figure 4In some embodiments of the present application, the plurality of filter seat 112 further comprises a fifth seat 1125, and the filter assembly 100 further comprises a mineralization filter 100e, which is coaxially installed with the fifth seat 1125 to access the waterway 1131, and downstream of the post-treatment filter 100d in the water flow direction. In this way, the water quality can be further improved by the mineralization filter 100e.

[0122] The main function of the mineralization filter 100e is to supplement minerals and improve water quality. In addition, the mineralization filter 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 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.

[0123] The mineralization filter 100e is mainly a medical stone filter, which is a composite mineral or medicinal rock that is non-toxic and harmless to organisms and has certain biological activity. Its chemical composition contains Ca, Mg, Si, Al, Fe, K, Na, and a small amount of rare elements, rare earth elements, and radioactive elements. Medical stone has properties such as adsorption, solubility, pH adjustment, biological activity, and mineralization.

[0124] Please refer to Figure 3 In some embodiments of the present application, the filter assembly 100 further comprises a flow meter 120, which is installed on the waterway structure 113 to access the waterway 1131, and upstream of the pre-treatment filter 100a in the water flow direction, 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 needs to be replaced according to the detection result, and the space in the waterway 1131 can be fully utilized to reduce the size of the filter 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.

[0125] Further, the filter core 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 make a judgment 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 core of the filter core assembly 100.

[0126] Specifically, the filter core assembly 100 further comprises a battery, the battery is electrically connected with the circuit board 130, and the battery is used to supply power for 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 core assembly 100 does not need to be connected to an external power supply, thereby improving the practicability of the filter core assembly 100. There are many types of batteries, the battery can be a lithium ion button type, and the battery can also be a lithium manganese button type, which is not limited here.

[0127] Please refer to Figure 4 In some embodiments of the present application, the waterway plate 110 has a containing groove 115 located on one side of the central axis surface 114, and the circuit board 130, the alarm and the battery are all installed in the containing groove 115. In this way, the waterway plate 110 can protect the circuit board 130, the alarm and the battery. The shape of the containing groove can be cylindrical, and the shape of the containing groove can also be square, which is not limited here.

[0128] Specifically, please refer to Figure 3 The containing groove 115 is arranged adjacent to the flow meter 120, so that the circuit board 130 can better receive the detection result of the flow meter 120.

[0129] Further, please refer to Figure 4 The filter core assembly 100 further comprises a cover 116, the cover 116 is arranged on the slot of the containing groove 115 to seal the containing groove 115, in this way, the cover 116 and the containing 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 damaged.

[0130] Please refer to Figure 2In some embodiments of the present application, the plurality of filter element mounting seats 112 further comprises a third mounting seat 1123, and the filter element assembly 100 further comprises a PP cotton filter element 100c, which is coaxially mounted with the third mounting seat 1123 to access the waterway 1131, and is upstream of the flow meter 120 in the water flow direction. In this way, large particles in the water can be filtered by the PP cotton filter element 100c, thereby avoiding the influence of large particles in the water on the flow meter 120.

[0131] Specifically, please refer to Figures 3-4 , the waterway 1131 comprises 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 pre-treatment 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 pre-treatment 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 is in communication with 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.

[0132] Tap water first enters the first flow channel 113a from the water inlet of the waterway plate 110, enters the PP cotton filter element 100c through the first flow channel 113a, is filtered through the PP cotton filter element 100c, enters the second flow channel 113b through the flow meter 120, enters the pretreatment filter element 100a through the second flow channel 113b, sequentially passes through the third flow channel 113c and the three-way valve 140 to enter the fourth flow channel 113d, enters the reverse osmosis filter element 100b through the fourth flow channel 113d, is filtered through the reverse osmosis filter element 100b to form two branches, one of which enters the wastewater channel 113f through the wastewater outlet of the reverse osmosis filter element 100b and is discharged from the water outlet of the waterway plate 110 through the wastewater valve 180, and the other of which enters the fifth flow channel 113e from the water outlet of the reverse osmosis filter element 100b after being filtered through the reverse osmosis filter element 100b and enters the sixth flow channel 113g through the one-way valve 160, enters the post-treatment filter element 100d through the sixth flow channel 113g and is sequentially discharged from the water outlet of the waterway plate 110 through the seventh flow channel 113h, the mineralization filter element 100e and the eighth flow channel 113i.

[0133] When the water inlet stops discharging water, tap water first enters the first flow channel 113a from the water inlet of the waterway plate 110, enters the PP cotton filter element 100c through the first flow channel 113a, is filtered through the PP cotton filter element 100c, enters the second flow channel 113b through the flow meter 120, enters the pretreatment filter element 100a through the second flow channel 113b, sequentially passes through the third flow channel 113c and the three-way valve 140 to enter the fourth flow channel 113d, enters the reverse osmosis filter element 100b through the fourth flow channel 113d, enters the fifth flow channel 113e from the water outlet of the reverse osmosis filter element 100b after being filtered through the reverse osmosis filter element 100b, and enters the sixth flow channel 113g through the one-way valve 160, flows into the pressure tank 150 through the sixth flow channel 113g, until the three-way valve 140 closes the communication relationship between the first water inlet and the water outlet.

[0134] When the water purifier 1000 starts discharging water, the water in the pressure tank 150 enters the post-treatment filter element 100d through the sixth flow channel 113g, and is sequentially discharged from the water outlet of the waterway plate 110 through the seventh flow channel 113h, the mineralization filter element 100e and the eighth flow channel 113i.

[0135] Generally, the post-treatment filter cartridge 100d is an activated carbon filter cartridge, 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 cartridge 100d and the pressure tank 150, so that the pressure tank 150 only stores the pure water filtered by the reverse osmosis filter cartridge 100b, thereby avoiding the carbon powder in the water filtered by the post-treatment filter cartridge 100d from remaining in the pressure tank 150 and affecting the subsequent water quality. Meanwhile, the post-treatment filter cartridge 100d is arranged downstream of the pressure tank 150, so that the post-treatment filter cartridge 100d can play a role in deodorizing the water discharged from the pressure tank 150.

[0136] Please refer to Figures 3-4 In view of the fact that the wastewater outlet of the reverse osmosis filter cartridge 100b is located on the central axis of the reverse osmosis filter cartridge 100b, the central axis plane 114 transversely intersects the second flow channel 113b, the third flow channel 113c, the fourth flow channel 113d, the wastewater passage 113f and the seventh flow channel 113h, and the fifth flow channel 113e is located on the side of the central axis plane 114 where the one-way valve 160 is arranged. In this way, the space of the water channel structure 113 on the central axis plane 114 is fully utilized, and the fifth flow channel 113e is located on the side of the central axis plane 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.

[0137] Specifically, the sixth flow channel 113g is recessed with an avoidance groove 113j near the inner wall surface of the post-treatment filter cartridge 100d, the groove bottom of the avoidance groove 113j is connected to the water inlet of the post-treatment filter cartridge 100d, and the avoidance groove 113j is located between the connection 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 avoidance groove 113j, and the water in the pressure tank 150 will also first enter the avoidance groove 113j, thereby avoiding the mutual influence of the water flowing into the sixth flow channel 113g through the one-way valve 160 and the water in the pressure tank 150, so that the water can smoothly enter the post-treatment filter cartridge 100d.

[0138] In some embodiments of the present application, the distance between the central axes of two adjacent filter cartridge mounting seats 112 is a, wherein 57mm≤a≤141mm. In this way, the volume of the filter cartridge assembly 100 can be reduced. Preferably, the distance between the central axes of two adjacent filter cartridge mounting seats 112 is 82.5mm.

[0139] Please refer to Figures 6-7In some embodiments of the present application, the pre-treatment filter element 100a comprises a filter element body 101a and a driving portion 102a, the driving portion 102a is mounted on the filter element body 101a, the filter element body 101a can be integrally formed with the driving portion 102a, or the filter element body 101a can be detachably connected with the driving portion 102a, which is not specifically limited here.

[0140] Each filter element mounting seat 112 has the same structure, and it can be understood that the first mounting seat 1121, the second mounting seat 1122, the third mounting seat 1123, the fourth mounting seat 1124, and the fifth mounting seat 1125 have the same structure. Taking the first mounting seat 1121 as an example, the first mounting seat 1121 comprises a seat body 112a, a rotating piece 112b, and a transmission portion 112c. The seat body 112a is in communication with the water channel 1131, the rotating piece 112b is rotatably mounted on the seat body 112a to communicate or block the water channel 1131, and the transmission portion 112c is arranged on the rotating piece 112b. The driving portion 102a can be inserted and matched with the corresponding transmission portion 112c to drive the rotating piece 112b to rotate. In this way, when the user replaces the pre-treatment filter element 100a, the driving portion 102a drives the transmission portion 112c to move to drive the rotating piece 112b to rotate to block the water channel 1131, thereby achieving the disassembly of the filter element and stopping the water outlet. When the user installs the pre-treatment filter element 100a, the driving portion 102a of the pre-treatment filter element 100a is inserted and matched with the transmission portion 112c of the rotating piece 112b, and then the pre-treatment filter element 100a is rotated. The driving portion 102a drives the transmission portion 112c to move to drive the rotating piece 112b to rotate to communicate the water channel 1131.

[0141] Further, please refer to Figures 6-7 The pre-treatment filter element 100a further comprises a guide portion 103a, the guide portion 103a is mounted on the filter element body 101a, the filter element body 101a can be integrally formed with the guide portion 103a, or the filter element body 101a can be detachably connected with the guide portion 103a, which is not specifically limited here.

[0142] The base 112a is provided with a mounting groove 112d. The rotating component 112b is rotatably mounted on the bottom of the mounting groove 112d, and the transmission part 112c is located on the surface of the rotating component 112b facing away from the bottom of the mounting groove 112d. The mounting groove 112d can have many shapes; it can be cylindrical or boss-shaped, as long as it does not affect the rotation of the rotating component 112b. No specific limitation is made here. The rotating component 112b is located at the bottom of the mounting groove 112d, so that the drive part 102a of the pretreatment filter element 100a must extend into the mounting groove 112d to cooperate with the transmission part 112c of the rotating component 112b. Thus, the base 112a can protect the rotating component 112b and the drive part 102a.

[0143] The first mounting base 1121 also includes a guide protrusion 112e, which protrudes from the wall of the mounting groove 112d and extends circumferentially along the mounting groove 112d. The guide portion 103a can extend between the guide protrusion 112e and the bottom of the mounting groove 112d. With this configuration, when the pretreatment filter element 100a rotates, the guide protrusion 112e and the bottom of the mounting groove 112d limit the guide portion 103a in the direction of the central axis of the pretreatment filter element 100a, thus ensuring that the guide portion 103a can only move along the extending direction of the guide protrusion 112e (i.e., the circumferential direction of the mounting groove 112d), thereby facilitating user operation. Simultaneously, after the pretreatment filter element 100a is installed, the guide portion 103a and the guide protrusion 112e can cooperate to limit the pretreatment filter element 100a, allowing it to be mounted on the base 112a.

[0144] Please refer to the following: Figures 6-7 Considering that without an upper limit on the rotation direction of the pretreatment filter element 100a, the user cannot determine whether the pretreatment filter element 100a is installed in the designated position, the first mounting base 1121 further includes a limiting protrusion 112f. One end of the limiting protrusion 112f is connected to one end of a guide protrusion 112e in the circumferential direction of the mounting groove 112d, and the other end of the limiting protrusion 112f extends axially towards the bottom of the mounting groove 112d. With this configuration, when installing the pretreatment filter element 100a, the user can simply rotate the pretreatment filter element 100a until the guide portion 103a of the pretreatment filter element 100a abuts against the limiting protrusion 112f, thus facilitating user operation.

[0145] Specifically, please refer to the following: 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] In the description of the present application, it should be understood that if 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, it 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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 can easily think of changes or replacements within the technical scope disclosed by the present application, 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: Waterway board, including board body, multiple filter core mounting seats arranged on the board body and waterway configuration member arranged on the filter core mounting seat, the waterway configuration member has waterway for sequentially communicating multiple filter core mounting seats, multiple filter core mounting seats at least include first mounting seat and second mounting seat, the inner wall surface of waterway is concave and is provided with avoiding slot, the groove bottom of avoiding slot is communicated with the water outlet of waterway board; Pre-treatment filter core, coaxially installed with first mounting seat, to access waterway; Reverse osmosis filter core, coaxially installed with second mounting seat, to access waterway, and along water flow direction, reverse osmosis filter core is located downstream of pre-treatment filter core; Pressure tank, communicated with water outlet of reverse osmosis filter core through waterway;And Check valve, arranged between reverse osmosis filter core and pressure tank, only allows water of reverse osmosis filter core to flow to pressure tank in one direction; Wherein, the avoiding slot is located between the connecting port of the waterway and the check valve.

2. The filter cartridge assembly of claim 1, wherein, The central axis of multiple filter core mounting seats defines a central axis plane, and multiple filter core mounting seats further include a fourth mounting seat, and the filter core assembly further includes: Post-treatment filter core, coaxially installed with fourth mounting seat, to access waterway, and along water flow direction, post-treatment filter core is located downstream of reverse osmosis filter core; Wherein, the groove bottom of avoiding slot is communicated with the water inlet of post-treatment filter core, to communicate the water outlet of waterway board through post-treatment filter core.

3. The filter cartridge assembly of claim 2 wherein, The connecting port of the waterway and the check valve are located on both sides of the central axis plane, and the central axis plane transversely cuts the avoiding slot.

4. The filter cartridge assembly of claim 2 wherein, Further comprising: Three-way valve, installed on the waterway configuration member, and located on one side of the central axis plane, and the first water inlet of the three-way valve is communicated with the water outlet of the pre-treatment filter core through the waterway, and the water outlet of the three-way valve is communicated with the water inlet of the reverse osmosis filter core through the waterway; Wherein, the pressure tank is communicated with the 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 4 wherein, Further comprising: Pressure pipe, installed 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.

7. The filter cartridge assembly of claim 6, wherein, The check valve is installed on the waterway configuration member and located on the side of the central axis plane away from the three-way valve.

8. The filter cartridge assembly of claim 7 wherein, The check valve and the pressure pipe are partially stacked and spaced apart in the vertical direction.

9. The filter cartridge assembly of claim 6 wherein, Further comprising: Waste water valve, arranged on waterway configuration member, and communicated with waste water outlet of reverse osmosis filter core through waterway, only allows waste water of reverse osmosis filter core to flow to drain port of waterway board in one direction; The waste water valve and the three-way valve are located on the same side of the central axis plane.

10. The filter cartridge assembly of claim 9, wherein, The check valve is located between the second mounting seat and the fourth mounting seat;And / or, The waste water valve is located between the second mounting seat and the fourth mounting seat.

11. The filter cartridge assembly of claim 10 wherein, Multiple filter core mounting seats further include a fifth mounting seat, and the filter core assembly further includes: A mineralization filter is coaxially installed with the fifth mounting seat to access the water path and is located downstream of the post-treatment filter along the water flow direction.

12. The filter cartridge assembly of claim 11 wherein, Further comprising: A flow meter is installed on the water path structure to access the water path and is located upstream of the pre-treatment filter along the water flow direction, and the median axis plane transversely crosses the flow meter.

13. The filter cartridge assembly of claim 12, wherein, The plurality of filter mounting seats further comprises a third mounting seat, and the filter assembly further comprises: A PP cotton filter 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 through the third mounting seat, and the water outlet of the PP cotton filter 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 pre-treatment filter through the first mounting seat; A third flow channel, one end of which is in communication with the water outlet of the pre-treatment filter 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 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 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 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 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 through the fourth mounting seat, and the other end is in communication with the water inlet of the mineralization filter 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 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 median axis plane transversely crosses 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 median axis plane where the one-way valve is arranged.

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

17. The filter cartridge assembly of any of claims 1-16, wherein, The pre-treatment filter comprises a filter body and a driving part, the driving part is installed on the filter body, and the structures of each filter 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.

18. The filter cartridge assembly of claim 17, wherein, The pre-treatment filter further comprises a guide part installed on the filter body; The seat body is provided with a mounting groove, the rotating member is rotatably mounted at the groove bottom of the mounting groove, and the transmission part is located on the surface of the rotating member away from the groove bottom of the mounting groove; The first mounting seat further comprises: A guide protrusion protruding from the groove wall of the mounting groove and extending along the circumferential direction of the mounting groove; The guide part can extend into the guide protrusion and the groove bottom of the mounting groove.

19. The filter cartridge assembly of claim 18 wherein, The first mounting seat further comprises: A limiting protrusion, one end of which is connected to one end of the guide protrusion in the circumferential direction of the mounting groove, and the other end extends along the axial direction of the mounting groove towards the groove bottom of the mounting groove.

20. The filter cartridge assembly of claim 19, wherein, The number of guide parts of the pre-treatment filter element is two. The number of guide protrusions and limiting protrusions is two, and the two guide protrusions are arranged at intervals in the circumferential direction of the mounting groove to form two avoidance channels, and the guide protrusions and the limiting protrusions are arranged one by one. The limiting protrusion is arranged at the end of the corresponding guide protrusion away from the other limiting protrusion.

21. The filter cartridge assembly of claim 20 wherein, The side of the guide protrusion connected with the limiting protrusion is provided with the guide slope, which extends from the direction close to the groove bottom of the mounting groove to the direction close to the adjacent avoidance channel.

22. The filter cartridge assembly of claim 18 wherein, The side of the guide protrusion facing the groove bottom of the corresponding mounting groove is recessed with a positioning groove; The pre-treatment filter element further comprises: A positioning part protruding from the surface of the guide part facing the guide protrusion; When the first mounting seat is in communication with the water path, the positioning part and the positioning groove are inserted and matched.

23. A water purifier characterized by comprising: It comprises: A shell; And The filter element assembly according to any one of claims 1 to 22; The shell cover is arranged on the side of the water path structure away from the filter element mounting seat.

24. The water purifier of claim 23, wherein It comprises: A decorative plate mounted on the outer circumferential wall of the shell.

25. The water purifier of claim 23, wherein It comprises: A box body provided with a mounting cavity, and the filter element assembly is mounted in the mounting cavity.

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