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 flow meter, the water path plate comprises a plate body, 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 water path structure part is provided with a water path for sequentially communicating the plurality of filter element mounting seats; the pretreatment filter element and one of the filter element mounting seats are coaxially mounted so as to be connected into a water path; the reverse osmosis filter element and the other filter element mounting seat are coaxially mounted so as to be connected into a water path, and the reverse osmosis filter element is positioned at the downstream of the pretreatment filter element along the water flow direction; the flow meter is installed on the water path construction piece to be connected into the water path, the flow meter is located on the upstream of the pretreatment filter element in the water flow direction, and the middle axial surface transversely cuts the flow meter. According to the technical scheme, the flowmeter is directly installed in the water path, so that arrangement of external pipelines is reduced, the structure of the filter element assembly is simplified, and the assembling procedure of the filter element assembly is simplified.

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 Art

[0002] At present, the use of water purifiers has become quite popular. Water purifiers can deeply filter impurities in water and water pipelines, providing people with cleaner domestic water, thereby better protecting the health of users.

[0003] In the related art, a filter element assembly is provided with a waterway plate to install a plurality of filter elements and a plurality of functional parts, and the waterway plate has a waterway that connects the plurality of filter elements and the plurality of functional parts.

[0004] Usually, the functional parts are connected to the filter element in the waterway plate by means of external pipes, which results in many pipes in the waterway plate, thus making the overall assembly process of the filter element assembly more complicated. Summary of the invention

[0005] The embodiments of the present application provide a filter element assembly and a water purifier, aiming to improve the problem that the assembly process of the filter element assembly is relatively complicated.

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

[0007] The waterway plate comprises a plate body, a plurality of filter element mounting seats arranged on the plate body, and a waterway structure member arranged on the filter element mounting seats.

[0008] The central axes of the plurality of filter element mounting seats define a central axis plane, the water channel structure has a water channel that sequentially connects the plurality of filter element mounting seats, and the plurality of filter element mounting seats at least include a first mounting seat and a second mounting seat;

[0009] A pre-treatment filter element is coaxially mounted with the first mounting seat to be connected to the waterway;

[0010] a reverse osmosis filter element, coaxially mounted with the second mounting seat to be connected to the waterway, and the reverse osmosis filter element is located downstream of the pre-treatment filter element along the water flow direction; and

[0011] A flow meter is installed on the water channel structure to access the water channel, and along the water flow direction, the flow meter is located upstream of the pre-treatment filter element, and the central axis plane crosses the flow meter.

[0012] In some of the embodiments, the filter element assembly further comprises:

[0013] sirens; and,

[0014] A circuit board is electrically connected to the flow meter and the alarm, and the circuit board can control the operation of the alarm according to the detection result of the flow meter.

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

[0016] A battery is electrically connected to the circuit board and is used to supply power to the circuit board, the flow meter and the alarm.

[0017] In some of the embodiments, the waterway plate has a receiving groove, the receiving groove is located on one side of the central axis surface, and the circuit board, the alarm and the battery are all installed in the receiving groove.

[0018] In some of the embodiments, the receiving tank is disposed adjacent to the flow meter.

[0019] In some of the embodiments, the filter element assembly further comprises:

[0020] The cover body is arranged on the notch of the containing groove to seal the containing groove.

[0021] In some of the embodiments, the plurality of filter element mounting seats further include a third mounting seat, and the filter element assembly further includes:

[0022] The PP cotton filter element is coaxially installed with the third mounting seat to be connected to the waterway, and along the water flow direction, the PP cotton filter element is located upstream of the flow meter.

[0023] In some of the embodiments, the filter element assembly further comprises:

[0024] A three-sided valve is installed on the water channel structure and is located on one side of the central axis surface, and a first water inlet of the three-sided valve is connected to a water outlet of the pre-treatment filter element through the water channel, and a water outlet of the three-sided valve is connected to a water inlet of the reverse osmosis filter element through the water channel;

[0025] a pressure tank, connected with the water outlet of the reverse osmosis filter element and the second water inlet of the three-sided valve through the water channel; and

[0026] A one-way valve is arranged between the reverse osmosis filter element and the pressure tank, and only allows water in the reverse osmosis filter element to flow to the pressure tank in one direction.

[0027] In some embodiments, the three-sided valve is located between the first mounting seat and the second mounting seat.

[0028] In some of the embodiments, the filter element assembly further comprises:

[0029] A pressure pipe is installed on the water channel structure and is located on the side of the central axis surface away from the three-sided valve. The pressure tank is connected to the second water inlet through the pressure pipe.

[0030] In some of the embodiments, the one-way valve is installed on a side of the central axis surface facing away from the three-sided valve.

[0031] In some of the embodiments, the one-way valve and the pressure tube are partially stacked and spaced apart in the vertical direction.

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

[0033] A wastewater valve is arranged on the waterway structure and is connected to the wastewater outlet of the reverse osmosis filter element through the waterway, so as to only allow the wastewater of the reverse osmosis filter element to flow unidirectionally to the drain outlet of the waterway plate;

[0034] The wastewater valve and the three-sided valve are located on the same side of the central axis surface.

[0035] In some of the embodiments, the plurality of filter element mounting seats further include a fourth mounting seat, and the filter element assembly further includes:

[0036] A post-processing filter element is coaxially mounted with the fourth mounting seat to be connected to the waterway, and along the water flow direction, the post-processing filter element is located downstream of the reverse osmosis filter element;

[0037] Wherein, the one-way valve is located between the second mounting seat and the fourth mounting seat; and / or,

[0038] The waste water valve is located between the second mounting seat and the fourth mounting seat.

[0039] In some of the embodiments, the plurality of filter element mounting seats further include a fifth mounting seat, and the filter element assembly further includes:

[0040] The mineralized filter element is coaxially installed with the fifth mounting seat to be connected to the waterway, and along the water flow direction, the mineralized filter element is located downstream of the post-treatment filter element.

[0041] In some of the embodiments, the waterway comprises:

[0042] A first flow channel, one end of which is connected to the water inlet of the waterway plate, and the other end of which is connected to the water inlet of the PP cotton filter element through the third mounting seat, and the water outlet of the PP cotton filter element is connected to the water inlet of the flow meter through the third mounting seat;

[0043] A second flow channel, one end of which is connected to the water outlet of the flow meter, and the other end of which is connected to the water inlet of the pre-treatment filter element through the first mounting seat;

[0044] A third flow channel, one end of which is connected to the water outlet of the pre-treatment filter element through the first mounting seat, and the other end of which is connected to the first water inlet of the three-sided valve;

[0045] a fourth flow channel, one end of which is connected to the water outlet of the three-surface valve, and the other end of which is connected to the water inlet of the reverse osmosis filter element through the second mounting seat;

[0046] a fifth flow channel, one end of which is connected to the water outlet of the reverse osmosis filter element through the second mounting seat, and the other end of which is connected to the water inlet of the one-way valve;

[0047] a wastewater channel, one end of which is connected to the wastewater outlet of the reverse osmosis filter element through the second mounting seat, and the other end of which is connected to the wastewater valve;

[0048] a sixth flow channel, one end of which is in communication with the water outlet of the one-way valve, the other end of which is in communication with the pressure tank, and is in communication with the water inlet of the post-processing filter element through the fourth mounting seat, and is in communication with the second water inlet of the three-sided valve through the pressure channel;

[0049] a seventh flow channel, one end of which is connected to the water outlet of the post-treatment filter element through the fourth mounting seat, and the other end of which is connected to the water inlet of the mineralization filter element through the fifth mounting seat; and

[0050] The eighth flow channel has one end connected to the water outlet of the mineralized filter element through the fifth mounting seat, and the other end connected to the water outlet of the waterway plate.

[0051] In some of the embodiments, the mid-axis plane crosses the second flow channel, the third flow channel, the fourth flow channel, the wastewater channel, and the seventh flow channel;

[0052] The fifth channel is located at a side of the central axis surface where the one-way valve is disposed.

[0053] In some of the embodiments, the sixth flow channel is provided with a avoidance groove on the inner wall surface near the post-treatment filter element, the bottom of the avoidance groove is connected to the water inlet of the post-treatment filter element, and the avoidance groove is located between the connection port of the water channel connected to the pressure tank and the one-way valve.

[0054] In some of the embodiments, the distance between the central axes of two adjacent filter element mounting seats is a, wherein 57 mm ≤ a ≤ 141 mm.

[0055] In some of the embodiments, the pre-treatment filter element comprises a filter element body and a driving unit, the driving unit is mounted on the filter element body, and the structures of the filter element mounting seats are the same;

[0056] The first mounting base comprises:

[0057] seat body;

[0058] A rotating member, rotatably mounted on the seat body to connect or block the waterway; and

[0059] A transmission part, arranged on the rotating member;

[0060] Wherein, the driving part can be plugged into and matched with the corresponding transmission part to drive the rotating member to rotate.

[0061] In some of the embodiments, the pre-treatment filter element further includes a guide portion, and the guide portion is installed on the filter element body;

[0062] 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 part is located on the surface of the rotating member facing away from the groove bottom of the mounting groove;

[0063] The first mounting seat also includes:

[0064] A guide protrusion protrudes from the groove wall of the installation groove and extends along the circumference of the installation groove;

[0065] Wherein, the guide portion can extend between the guide protrusion and the bottom of the installation groove.

[0066] In some of the embodiments, the first mounting base further comprises:

[0067] The 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 toward the groove bottom of the mounting groove along the axial direction of the mounting groove.

[0068] In some of the embodiments, the number of the guide parts of the pre-treatment filter element is two;

[0069] The number of the guide protrusions and the limiting protrusions are both 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 in a one-to-one correspondence;

[0070] The limiting protrusion is arranged at an end of the corresponding guiding protrusion away from the other limiting protrusion.

[0071] In some of the embodiments, a guide slope is provided on one side where the guide protrusion is connected to the limiting protrusion, and the guide slope extends from a direction close to the bottom of the installation groove toward a direction close to the adjacent avoidance channel.

[0072] In some of the embodiments, a positioning groove is formed on one side of the guide protrusion facing the bottom of the corresponding installation groove;

[0073] The pre-treatment filter element also includes:

[0074] A positioning portion, convexly disposed on a surface of the guide portion facing the guide convex portion;

[0075] Wherein, when the first mounting seat is connected with the water channel, the positioning portion is plug-fitted into the positioning groove.

[0076] The present application also provides a water purifier, the water purifier comprising:

[0077] Housing; and

[0078] The filter element assembly described above;

[0079] Wherein, the outer shell cover is arranged on a side of the water channel structure away from the filter element mounting seat.

[0080] In some embodiments, the water purifier further comprises:

[0081] The decorative plate is installed on the outer peripheral wall of the shell.

[0082] In some embodiments, the water purifier comprises:

[0083] The box body is provided with an installation cavity, and the filter element assembly is installed in the installation cavity.

[0084] In the filter element assembly and the water purifier in the embodiment of the present application, a flow meter is provided. The flow meter is connected to the waterway to detect the flow of the waterway, 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 can be fully utilized to reduce the volume of the filter element assembly. At the same time, installing the flow meter on the waterway structure to access the waterway can reduce the setting of external pipelines, thereby simplifying the structure of the filter element assembly, thereby simplifying the assembly process of the filter element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0086] Figure 1 A schematic diagram of the structure of a water purifier provided in an embodiment of the present application;

[0087] Figure 2 It is a partial structural schematic diagram of a filter element assembly in one embodiment of the present application;

[0088] Figure 3 for Figure 2A cross-sectional view of the middle filter element assembly;

[0089] Figure 4 for Figure 2 Partial exploded view of the middle filter element assembly;

[0090] Figure 5 This is a partial enlarged view of a waterway plate in one embodiment of the present application;

[0091] Figure 6 This is a schematic diagram of the partial structure of a waterway plate in one embodiment of the present application;

[0092] Figure 7 Schematic diagram of the structure of the pre-treatment filter element in one embodiment of the present application.

[0093] Description of reference numerals:

[0094] 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 member; 112c, transmission part; 112d, mounting groove; 112e, guide protrusion; 112f, limit protrusion; 112g, avoidance channel; 112h, guide slope; 112i, positioning groove; 113, waterway structure; 1131, waterway; 113a, first flow channel; 113b, second flow channel; 113c, third flow channel; 113d, fourth flow channel; 113e, first The fifth flow channel; 113f, the wastewater channel; 113g, the sixth flow channel; 113h, the seventh flow channel; 113i, the eighth flow channel; 113j, the avoidance groove; 113k, the water retaining part; 114, the central axis surface; 115, the accommodating groove; 116, the cover body; 100a, the pre-treatment filter element; 101a, the filter element body; 102a, the driving part; 103a, the guiding part; 104a, the positioning part; 100b, the reverse osmosis filter element; 100c, the PP cotton filter element; 100d, the post-treatment filter element; 100e, the mineralization filter element; 120, the flow meter; 130, the circuit board; 140, the three-sided valve; 150, the pressure tank; 160, the one-way valve; 170, the pressure pipe; 180, the wastewater valve; 200, the outer shell; 300, the decorative plate. DETAILED DESCRIPTION

[0095] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0096] Please also read Figure 1 to Figure 2The embodiment of the present application provides a filter element assembly 100 and a water purifier 1000 . The filter element assembly 100 includes a waterway plate 110 , a pre-treatment filter element 100 a , a reverse osmosis filter element 100 b and a flow meter 120 .

[0097] See also Figure 2 The waterway plate 110 includes a plate body 111, a plurality of filter element mounting seats 112 disposed on the plate body 111, and a waterway structure 113. The plate body 111 and the filter element mounting seats 112 may be integrally formed, or the plate body 111 and the filter element mounting seats 112 may be detachably connected, which is not specifically limited here. The plate body 111 may be made of a variety of materials, the plate body 111 may also be made of a metal material, or the plate body 111 may also be made of a harder plastic material, which is not specifically limited here.

[0098] See also Figure 3 The central axis of the plurality of filter element mounting seats 112 defines a central axis surface 114, and the plurality of filter element mounting seats 112 at least include a first mounting seat 1121 and a second mounting seat 1122. It can be understood that the number of the filter element mounting seats 112 is at least two, one of the filter element mounting seats 112 is the first mounting seat 1121, and the other one of the filter element mounting seats 112 is the second mounting seat 1122. The filter element mounting seats 112 may also include a third mounting seat 1123, a fourth mounting seat 1124, etc., which are not specifically limited here. It should be noted that each filter element mounting seat 112 is located on the central axis surface 114, and it can be understood that the plurality of filter element mounting seats 112 are arranged at intervals along the same direction.

[0099] The filter element mounting seat 112 can be made of many materials, such as metal material or harder plastic material, which is not specifically limited here. The filter element mounting seat 112 can be in many shapes, such as cylindrical, boss, or other shapes, as long as it matches the corresponding filter element, which is not specifically limited here.

[0100] See also Figure 4The water channel component 113 has a water channel 1131 that connects multiple filter cartridge mounting seats 112 in sequence. The water channel component 113 can be made of many materials. The water channel component 113 can be made of metal materials or harder plastic materials, which are not specifically limited here. The water channel component 113 can be integrally formed with the filter cartridge mounting seat 112, or the water channel component 113 can be detachably connected to the filter cartridge mounting seat 112, which is not specifically limited here. Preferably, the water channel component 113 is integrally formed with the filter cartridge mounting seat 112, so that the water in the water channel 1131 can be prevented from leaking through the gap between the water channel component 113 and the filter cartridge mounting seat 112.

[0101] The pre-treatment filter element 100a is coaxially installed 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 element, a PP cotton filter, a ceramic filter, a compression filter, and an activated carbon filter, etc., which are not specifically limited here. The pre-treatment filter element 100a can remove visible impurities such as mud, rust, and insect eggs in the water. There are many ways to install the pre-treatment filter element 100a on the first mounting seat 1121. The pre-treatment filter element 100a can be installed on the first mounting seat 1121 by plugging, and the pre-treatment filter element 100a can also be installed on the first mounting seat 1121 by rotating and buckling, which are not specifically limited here.

[0102] The reverse osmosis filter element 100b is coaxially installed with the second mounting seat 1122 to access the waterway 1131, and along the direction of water flow, the reverse osmosis filter element 100b is located downstream of the pre-treatment filter element 100a. It can be understood that the tap water first passes through the filtration of 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 matter, removing organic matter, removing heavy metals, etc., thereby effectively purifying water quality and ensuring the safety and sanitation of water quality. There are many ways to install the reverse osmosis filter element 100b on the second mounting seat 1122. The reverse osmosis filter element 100b can be installed on the second mounting seat 1122 by plugging, and the reverse osmosis filter element 100b can also be installed on the second mounting seat 1122 by rotating and buckling. No specific limitation is made here.

[0103] Please also read Figure 3 to Figure 4The flow meter 120 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 crosses the flow meter 120. The flow meter 120 and the circuit board 130 can be electrically connected through a wire, or the flow meter 120 and the circuit board 130 can also be electrically connected by wireless connection. Preferably, the flow meter 120 and the circuit board 130 can also be electrically connected by wireless connection, which can prevent the water in the waterway 1131 from affecting the circuit board 130.

[0104] The filter element assembly 100 and the water purifier 1000 in the embodiment of the present application are provided with a flow meter 120, and the flow meter 120 is connected to 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. At the same time, the flow meter 120 is installed on the waterway structure 113 to access the waterway 1131, which can reduce the setting of external pipelines, thereby simplifying the structure of the filter element assembly 100, thereby simplifying the assembly process of the filter element assembly 100.

[0105] For further information, see Figure 4 The filter element assembly 100 further includes an alarm and a circuit board 130. The circuit board 130 is electrically connected to the flow meter 120 and the alarm. 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 a 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.

[0106] Specifically, the filter element assembly 100 also includes a battery, which is electrically connected to 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 an external power supply, thereby improving the practicality of the filter element assembly 100. There are many types of batteries, and the battery can be a lithium-ion button type, and the battery can also be a lithium-manganese button type, which is not specifically limited here.

[0107] See also Figure 4 In some embodiments of the present application, the waterway plate 110 has a receiving groove 115, which is 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 receiving groove 115. In this way, the waterway plate 110 can protect the circuit board 130, the alarm and the battery. There are many shapes of the receiving groove, which can be cylindrical or square, and no specific limitation is made here.

[0108] Specifically, see Figure 3 The receiving groove 115 is arranged adjacent to the flow meter 120 . With such an arrangement, the circuit board 130 can better receive the detection result of the flow meter 120 .

[0109] Furthermore, the filter element assembly 100 also includes a cover body 116, which covers the notch of the receiving groove 115 to seal the receiving groove 115. In this way, the cover body 116 and the receiving groove 115 cooperate to provide sealing protection for the circuit board 130, thereby preventing the water in the water channel 1131 from affecting the circuit board 130 and causing the circuit in the circuit board 130 to be short-circuited and damaged.

[0110] See also Figure 2 In some embodiments of the present application, the plurality of filter element mounting seats 112 further include a third mounting seat 1123, and the filter element assembly 100 further includes a PP cotton filter element 100c, which is coaxially mounted 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 arrangement, large particles in the water can be filtered by the PP cotton filter element 100c, thereby preventing the large particles in the water from affecting the flow meter 120.

[0111] Please also read Figures 2 to 4 In some embodiments of the present application, the filter element assembly 100 further includes a three-sided valve 140 , a pressure tank 150 and a one-way valve 160 .

[0112] The three-sided valve 140 is installed on the water channel structure 113 and is located on one side of the central axis surface 114. The first water inlet of the three-sided valve 140 is connected to the water outlet of the pre-treatment filter element 100a through the water channel 1131, and the water outlet of the three-sided valve 140 is connected to the water inlet of the reverse osmosis filter element 100b through the water channel 1131.

[0113] There are many installation positions for the three-sided valve 140. The three-sided valve 140 can be located on a side of the first mounting seat 1121 away from the second mounting seat 1122, or on a side of the second mounting seat 1122 away from the first mounting seat 1121. The three-sided valve 140 can also be located between the first mounting seat 1121 and the second mounting seat 1122. Preferably, the three-sided valve 140 is located between the first mounting seat 1121 and the second mounting seat 1122. This can shorten the length of the water path 1131 connecting the first water inlet of the three-sided valve 140 with the pre-treatment filter element 100a, and shorten the length of the water path 1131 connecting the water outlet of the three-sided valve 140 with the water inlet of the reverse osmosis filter element 100b, thereby reducing the volume of the water path structure 113, and then reducing the volume of the water purifier 1000.

[0114] There are many ways to install the three-sided valve 140 on the water channel structure 113. The three-sided valve 140 can be installed on the water channel structure 113 by screw connection, or by snap connection, which is not specifically limited here.

[0115] The pressure tank 150 is connected to the water outlet of the reverse osmosis filter element 100b and the second water inlet of the three-sided valve 140 through the water channel 1131. When the water purifier 1000 stops discharging water, 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 it generates. Conversely, the less water in the pressure tank 150, the smaller the pressure it generates. Since the pressure tank 150 is connected to the second water inlet of the three-sided valve 140, the pressure of the pressure tank 150 is the same as the pressure of the second water inlet of the three-sided valve 140.

[0116] Taking into account that the slow filtration efficiency of the reverse osmosis filter element 100b will result in low water output efficiency of the water purifier 1000, by setting the pressure tank 150 downstream of the reverse osmosis filter element 100b, the pressure tank 150 can store the water filtered by the reverse osmosis filter element 100b. When the water purifier 1000 resumes water output, water can be quickly supplied to the user through the pressure tank 150, thereby improving the water output efficiency of the water purifier 1000.

[0117] There are many ways for the pressure tank 150 to be connected to the waterway 1131. For example, the waterway component 113 has an external interface connected to the waterway 1131, and the pressure tank 150 is connected to the external interface by means of an external pipe. Another example is that the pressure tank 150 is directly installed on the waterway component 113, and the water inlet and outlet of the pressure tank 150 are directly connected to the waterway 1131. No specific limitation is made here. Since the volume of the pressure tank 150 is relatively large, when the pressure tank 150 is directly installed on the waterway component 113, the waterway component 113 will require a larger volume to provide sufficient installation space for the pressure tank 150. Therefore, preferably, the pressure tank 150 is connected to the waterway 1131 by means of 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.

[0118] The one-way valve 160 is disposed between the reverse osmosis filter element 100b and the pressure tank 150, and only allows the water of the reverse osmosis filter element 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 element 100b. There are many positions where the one-way valve 160 is installed on the waterway structure 113. The one-way valve 160 can be installed in the waterway 1131, or on the outer peripheral side of the waterway structure 113, which is not specifically limited here. Preferably, the one-way valve 160 is installed on the waterway structure 113 and is located on the side of the central axis surface 114 away from the three-sided valve 140, so that the space of the waterway structure 113 on both sides of the central axis surface 114 can be fully utilized, and more space can be provided for the installation of the three-sided valve 140 and the one-way valve 160, thereby facilitating the assembly of the filter element assembly 100.

[0119] It should be noted that when the pressure of the second water inlet of the three-sided valve 140 is greater than the pressure of the first water inlet of the three-sided valve 140, the three-sided valve 140 will disconnect the connection between the first water inlet and the water outlet. When the pressure of the second water inlet of the three-sided valve 140 is less than the pressure of the first water inlet of the three-sided valve 140, the three-sided valve 140 will restore the connection between the first water inlet and the water outlet.

[0120] When the water purifier 1000 stops discharging water, the filter element assembly 100 will continue to filter the tap water under the influence of the tap water pressure. At this time, the pressure of the first water inlet of the three-sided valve 140 is the tap water pressure. The tap water will pass through the pre-treatment filter element 100a, the three-sided valve 140 and the reverse osmosis filter element 100b in sequence and enter the pressure tank 150. 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-sided valve 140 will disconnect the connection between the first water inlet and the water outlet.

[0121] When the water purifier 1000 resumes water output, the pressure tank 150 will flow the stored water into the waterway 1131. The water stored in the pressure tank 150 will gradually decrease, causing the pressure in the pressure tank 150 to gradually drop. The pressure at the second water inlet of the three-sided valve 140 is lower than the pressure at the first water inlet. The three-sided valve 140 will restore the connectivity between the first water inlet and the water outlet. The filter element assembly 100 will filter the tap water driven by the tap water pressure.

[0122] The filter element assembly 100 connects the pressure tank 150 with the second water inlet by setting a pressure pipe 170. One end of the pressure pipe 170 is connected 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 connected with the second water inlet of the three-sided valve 140. Considering that the pressure pipe 170 needs to cross the second mounting seat 1122 before it can be connected with the three-sided valve 140, and the connection positions of the pressure pipe 170 and the three-sided valve 140 are both located on the same side of the central axis surface 114 where the three-sided valve 140 is set, it will make the side of the central axis surface 114 where the three-sided valve 140 is set more compact and cumbersome. In view of this, the pressure pipe 170 is installed on the waterway structure 113 and is located on the side of the central axis surface 114 away from the three-sided valve 140. At this time, the first water inlet, the second water inlet and the water outlet of the three-sided valve 140 are all set on the surface of the three-sided valve 140 facing the central axis surface 114. Such an arrangement can fully utilize the space on both sides of the central axis surface 114 of the water channel structure 113 and provide more space for the installation of the three-sided valve 140 and the pressure pipe 170, thereby facilitating the assembly of the filter element assembly 100.

[0123] For further information, see 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.

[0124] In some embodiments of this application, please refer to Figure 3 to Figure 4 The filter element assembly 100 also includes a wastewater valve 180, which is arranged on the waterway structure 113 and communicated with the wastewater outlet of the reverse osmosis filter element 100b through the waterway 1131, allowing only the wastewater of the reverse osmosis filter element 100b to flow unidirectionally to the drain outlet of the waterway plate 110, and the wastewater valve 180 and the three-sided valve 140 are located on the same side of the central axis surface 114. In this arrangement, part of the water will wash away the minerals and pollutants deposited on the membrane surface of the reverse osmosis filter element 100b, and be discharged from the system drain outlet through the drain outlet of the reverse osmosis filter element 100b and the drain pipeline, thereby ensuring that the water production and desalination of the reverse osmosis filter element 100b will not decrease, and the filtering effect is guaranteed. The wastewater valve 180 can prevent the wastewater from the drain outlet of the waterway plate 110 from flowing back into the reverse osmosis filter element 100b.

[0125] For details, please refer to Figure 3 to Figure 4, the three-sided 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 wastewater valve 180 are respectively located on both 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. It can be understood that the second mounting seat 1122 is located between the three-sided valve 140 and the wastewater valve 180. In this way, the space on both sides of the water channel structure 113 on the central axis surface 114 and the space on both sides of the second mounting seat 1122 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.

[0126] Please also read Figure 3 to Figure 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-processing filter element 100d, which is coaxially mounted with the fourth mounting seat 1124 to access the waterway 1131, and along the water flow direction, the post-processing filter element 100d is located downstream of the reverse osmosis filter element 100b, and in this way, the post-processing filter element 100d is arranged to remove substances such as discoloration, odor and odor in the water, and at the same time adsorb macromolecular organic matter in the water, thereby further improving the filtering effect of the water purifier 1000. The post-processing filter element 100d can be a granular activated carbon filter element, and the post-processing filter element 100d can also be a compressed activated carbon filter element, which is not specifically limited here.

[0127] Among them, the one-way valve 160 is located between the second mounting seat 1122 and the fourth mounting seat 1124. Such a setting shortens the distance between the water outlet of the one-way valve 160 and the second water outlet of the three-sided valve 140, thereby shortening the length of the pressure pipe 170 and further reducing the volume of the filter element assembly 100.

[0128] The wastewater valve 180 is located between the second mounting seat 1122 and the fourth mounting seat 1124. This arrangement allows the wastewater valve 180 to be close to the reverse osmosis filter element 100b, thereby reducing the length of the waterway 1131 connecting the wastewater port of the reverse osmosis filter element 100b and the wastewater valve 180, thereby reducing the volume of the filter element assembly 100.

[0129] Please also read Figure 3 to Figure 4 In some embodiments of the present application, the plurality of filter element mounting seats 112 further include a fifth mounting seat 1125, and the filter element assembly 100 further includes a mineralized filter element 100e, which is coaxially mounted with the fifth mounting seat 1125 to access the waterway 1131, and along the water flow direction, the mineralized filter element 100e is located downstream of the post-treatment filter element 100d. In this arrangement, the water quality can be further improved by the mineralized filter element 100e.

[0130] 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 water. By adjusting the pH value of water to a slightly alkaline environment, the mineralization filter element 100e helps improve the taste and nutritional value of water, making it more in line with human health needs. This treated water is not only healthier, but also has better penetration, diffusion, solubility, etc., thereby improving the overall quality of water.

[0131] Mineralized filter element 100e is mainly medical stone filter element, 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 a small amount of rare elements, rare earth elements, and radioactive elements in addition to the common Ca, Mg, Si, Al, Fe, K, and Na. Medical stone has properties such as adsorption, solubility, pH adjustment, biological activity, and mineralization.

[0132] For details, please refer to Figure 3 to Figure 4The water channel 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 channel 113f. One end of the first flow channel 113a is connected to the water inlet of the waterway plate 110, and the other end of the first flow channel 113a is connected to 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 connected to the inlet of the flow meter 120 through the third mounting seat 1123. One end of the second flow channel 113b is connected to the water outlet of the flow meter 120, and the other end of the second flow channel 113b is connected to 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 connected to 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 connected to the first water inlet of the three-surface valve 140; one end of the fourth flow channel 113d is connected to the water outlet of the three-surface valve 140, and the other end of the fourth flow channel 113d is connected to the reverse osmosis filter through the second mounting seat 1122 One end of the fifth flow channel 113e is connected to 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 connected to the water inlet of the one-way valve 160; one end of the sixth flow channel 113g is connected to the water outlet of the one-way valve 160, and the other end of the sixth flow channel 113g is connected to the pressure tank 150, and is connected to the water inlet of the post-treatment filter element 100d through the fourth mounting seat 1124, and is connected to the second water inlet of the three-sided valve 140 through the pressure pipe 170; one end of the seventh flow channel 113h .... The seventh flow channel 113h is connected to 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 connected to the water inlet of the mineralization filter element 100e through the fifth mounting seat 1125; one end of the eighth flow channel 113i is connected to 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 connected to the water outlet of the waterway plate 110; one end of the wastewater channel 113f is connected to the wastewater outlet of the reverse osmosis filter element 100b through the second mounting seat 1122, and the other end of the wastewater channel 113f is connected to the wastewater valve 180;

[0133] The 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, enters the second flow channel 113b through the flow meter 120 after being filtered by the PP cotton filter element 100c, enters the pre-treatment filter element 100a through the second flow channel 113b, passes through the pre-treatment filter element 100a, passes through the third flow channel 113c and the three-sided valve 140 in sequence, enters the fourth flow channel 113d, enters the reverse osmosis filter element 100b through the fourth flow channel 113d, and is filtered by the reverse osmosis filter element 100b to produce two There are 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 drain outlet of the waterway plate 110 through the wastewater valve 180, and the other enters the fifth flow channel 113e from the outlet of the reverse osmosis filter element 100b after being filtered by 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 discharged from the outlet of the waterway plate 110 through the seventh flow channel 113h, the mineralization filter element 100e and the eighth flow channel 113i in sequence.

[0134] When the water inlet stops discharging water, the 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, enters the second flow channel 113b through the flow meter 120 after being filtered by the PP cotton filter element 100c, enters the pre-treatment filter element 100a through the second flow channel 113b, passes through the third flow channel 113c and the three-sided valve 140 after passing through the pre-treatment filter element 100a, enters the fourth flow channel 113d through the fourth flow channel 113d, enters the reverse osmosis filter element 100b, enters the fifth flow channel 113e from the water outlet of the reverse osmosis filter element 100b after being filtered by the reverse osmosis filter element 100b, enters the sixth flow channel 113g through the one-way valve 160, and flows into the pressure tank 150 through the sixth flow channel 113g, until the three-sided valve 140 closes the connection between the first water inlet and the water outlet.

[0135] When the water purifier 1000 starts to discharge water, the water in the pressure tank 150 will enter the post-treatment filter element 100d through the sixth flow channel 113g, and will be 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 in sequence.

[0136] Usually, the post-processing filter element 100d adopts an activated carbon filter element. When the activated carbon filter element is just used, there will be slight carbon powder phenomenon. The post-processing filter element 100d and the pressure tank 150 are connected through the sixth flow channel 113g, so that the pressure tank 150 will only store pure water filtered by the reverse osmosis filter element 100b, thereby avoiding the carbon powder in the water filtered by the post-processing filter element 100d to remain in the pressure tank 150 and affect the subsequent water quality. At the same time, the post-processing filter element 100d is set downstream of the pressure tank 150, which can make the post-processing filter element 100d play a role in purifying the water discharged from the pressure tank 150.

[0137] Please also read Figure 3 to Figure 4 Considering that the wastewater outlet of the reverse osmosis filter element 100b is located on the central axis of the reverse osmosis filter element 100b, the central axis surface 114 crosses the second flow channel 113b, the third flow channel 113c, the fourth flow channel 113d, the wastewater channel 113f and the seventh flow channel 113h; the fifth channel is located on the side of the central axis surface 114 where the check valve 160 is provided. In this way, the space of the water channel component 113 on the central axis surface 114 is fully utilized, and the fifth channel is located on the side of the central axis surface 114 where the check valve 160 is provided, and the distance between the check valve 160 and the fifth flow channel 113e is shortened, which can effectively shorten the length of the fifth flow channel 113e and facilitate the connection between the check valve 160 and the fifth flow channel 113e.

[0138] For further information, see Figure 5 The inner wall surface of the sixth flow channel 113g near the post-processing filter element 100d is concavely provided with an avoidance groove 113j, the bottom of which is connected to the water inlet of the post-processing filter element 100d, and the avoidance groove 113j is located between the connection port of the waterway 1131 connected to the pressure tank 150 and the one-way valve 160. With such a configuration, 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 preventing the water flowing into the sixth flow channel 113g through the one-way valve 160 and the water in the pressure tank 150 from affecting each other, resulting in the water being unable to smoothly enter the post-processing filter element 100d.

[0139] Preferably, the inner wall surface of the sixth flow channel 113g is also protrudingly provided with two water retaining portions 113k, and the avoidance groove 113j is located between the two water retaining portions 113k, so that the water in the pressure tank 150 and the water flowing into the sixth flow channel 113g through the one-way valve 160 will respectively cross the two water retaining portions 113k and enter the avoidance groove 113j, thereby further avoiding the water flowing into the sixth flow channel 113g through the one-way valve 160 and the water in the pressure tank 150 from influencing each other.

[0140] In some embodiments of the present application, the distance between the central axes of two adjacent filter element mounting seats 112 is a, where 57 mm ≤ a ≤ 141 mm. This arrangement can reduce the volume of the filter element assembly 100. Preferably, the distance between the central axes of two adjacent filter element mounting seats 112 is 82.5 mm.

[0141] Please also read Figure 6 to Figure 7 In some embodiments of the present application, the pre-treatment filter element 100a includes a filter element body 101a and a driving unit 102a, the driving unit 102a is installed on the filter element body 101a, the filter element body 101a and the driving unit 102a can be integrally formed, and the filter element body 101a can also be detachably connected to the driving unit 102a, which is not specifically limited here.

[0142] The structures of each filter element mounting seat 112 are the same. It can be understood that the structures of the above-mentioned 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 are the same. Taking the first mounting seat 1121 as an example, the first mounting seat 1121 includes a seat body 112a, a rotating member 112b and a transmission part 112c. The seat body 112a is connected to the water path 1131, and the rotating member 112b is rotatably installed on the seat body 112a to connect or block the water path 1131. The transmission part 112c is arranged on the rotating member 112b; wherein the driving part 102a can be plugged and matched with the corresponding transmission part 112c to drive the rotating member 112b to rotate. With such a configuration, when the user replaces the pre-treatment filter element 100a, the user rotates the pre-treatment filter element 100a, and the driving part 102a drives the transmission part 112c to move, thereby driving the rotating member 112b to rotate to block the waterway 1131, so that the filter element is removed and the water is stopped. When the user installs the pre-treatment filter element 100a, the user plugs the driving part 102a of the pre-treatment filter element 100a into the transmission part 112c of the rotating member 112b, and then rotates the pre-treatment filter element 100a, and the driving part 102a drives the transmission part 112c to move, thereby driving the rotating member 112b to rotate to connect the waterway 1131.

[0143] For further information, please also refer to Figure 6 to Figure 7 The pre-treatment filter element 100a also includes a guide portion 103a, which is installed on the filter element body 101a. The filter element body 101a can be integrally formed with the guide portion 103a, and the filter element body 101a can also be detachably connected to the guide portion 103a, which is not specifically limited here.

[0144] The seat body 112a is provided with a mounting groove 112d, and the rotating member 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 member 112b facing away from the bottom of the mounting groove 112d. The mounting groove 112d can have many shapes, and the mounting groove 112d can be cylindrical or boss-shaped, as long as it does not affect the rotation of the rotating member 112b, and no specific limitation is made here. The rotating member 112b is arranged at the 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 member 112b, so that the seat body 112a can protect the rotating member 112b and the driving part 102a.

[0145] The first mounting seat 1121 also includes a guide protrusion 112e, which is convexly arranged on the groove wall of the mounting groove 112d and extends along the circumference of the mounting groove 112d, and the guide portion 103a can extend between the guide protrusion 112e and the groove bottom of the mounting groove 112d. In this way, when the pre-treatment filter element 100a rotates, the guide portion 103a is limited in the direction of the central axis of the pre-treatment filter element 100a by the guide protrusion 112e and the groove bottom of the mounting groove 112d, so that the guide portion 103a can only move along the extension direction of the guide protrusion 112e (i.e., the circumference 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 of the guide portion 103a and the guide protrusion 112e, so that the pre-treatment filter element 100a is installed on the seat body 112a.

[0146] Considering that if there is no upper limit on the rotation direction of the pre-processing filter element 100a, the user cannot determine whether the pre-processing filter element 100a is installed to the specified position, in view of this, the first mounting seat 1121 also 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 along the axial direction of the mounting groove 112d toward the bottom of the mounting groove 112d. With this arrangement, when installing the pre-processing filter element 100a, the user can rotate the pre-processing filter element 100a until the guide portion 103a of the pre-processing filter element 100a abuts against the limiting protrusion 112f, thereby facilitating the user's operation.

[0147] For details, please refer to Figure 6 to Figure 7The 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 are both two, and the two guide protrusions 112e are spaced apart in the circumferential direction of the mounting groove 112d to form two avoidance channels 112g, and the guide protrusions 112e and the limiting protrusions 112f are arranged in a one-to-one correspondence; the limiting protrusion 112f is arranged at one end of the corresponding guide protrusion 112e away from the other limiting protrusion 112f. With such arrangement, when installing the pre-treatment filter element 100a, the pre-treatment filter element 100a is first extended into the installation groove 112d along the direction of the central axis of the first mounting seat 1121, and the guide portion 103a passes through the avoidance channel 112g. The guide portion 103a is limited by the limiting protrusion 112f on one side of the circumferential direction of the installation groove 112d, so that the pre-treatment filter element 100a can only rotate in a preset direction, thereby preventing the user from turning in the wrong direction and causing the pre-treatment filter element 100a to be improperly installed.

[0148] For further information, please also refer to Figure 6 to Figure 7 A guide slope 112h is provided on one side where the guide protrusion 112e is connected to the limiting protrusion 112f. The guide slope 112h extends from the direction close to the bottom of the installation groove 112d to the direction close to the adjacent avoidance channel 112g. With such a configuration, when installing the pre-treatment filter element 100a, the pre-treatment filter element 100a is first extended 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 slope 112h, thereby guiding the guide portion 103a to enter the avoidance channel 112g, and at the same time, the rotation direction of the pre-treatment filter element 100a can be prompted, thereby facilitating user operation.

[0149] Please also read Figure 6 to Figure 7In some embodiments of the present application, a positioning groove 112i is concavely provided on one side of the bottom of the guide protrusion 112e facing the corresponding installation groove 112d; the pre-treatment filter element 100a also includes a positioning portion 104a, which is convexly provided on the surface of the guide portion 103a facing the guide protrusion 112e; wherein, when the first mounting seat 1121 is connected with the waterway 1131, the positioning portion 104a is plugged into and matched with the positioning groove 112i. With such a configuration, after the pre-treatment filter element 100a is installed to the specified position, the positioning portion 104a of the pre-treatment filter element 100a is plugged into and matched with the positioning groove 112i, thereby limiting the circumference of the pre-treatment filter element 100a, thereby preventing the filter element assembly 100 from rotating due to external influences, causing the pre-treatment filter element 100a to be separated from the first mounting seat 1121. When removing the pre-treatment filter element 100a, it is necessary to first push the pre-treatment filter element 100a toward the bottom of the installation groove 112d so that the positioning portion 104a disengages from the positioning groove 112i, then rotate the pre-treatment filter element 100a, and finally withdraw the pre-treatment filter element 100a from the installation groove 112d along the central axis of the first mounting seat 1121.

[0150] 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 the structure of the pre-treatment filter element 100a described above, so as to be connected to the corresponding filter element mounting seat 112.

[0151] See also Figure 1 The present application also proposes a water purifier 1000, which includes a housing 200 and the above-mentioned filter element assembly 100, and the housing 200 is covered on the side of the waterway structure 113 away from the filter element mounting seat 112. The housing 200 can protect the filter element mounting seat 112. The housing 200 can be made of a metal material, or the housing 200 can be made of a harder plastic, which is not specifically limited here. There are many ways to install the housing 200 on the filter element assembly 100. The housing 200 can be installed on the filter element assembly 100 by screw connection, or the housing 200 can be installed on the filter element assembly 100 by buckling, which is not specifically limited here.

[0152] See also Figure 1In some embodiments of the present application, the water purifier 1000 further includes a decorative plate 300, which is mounted on the outer peripheral wall of the housing 200. This arrangement can make the product more beautiful. At the same time, the outer periphery of the housing 200 is easily bumped, and the outer periphery of the housing 200 is protected by the decorative plate 300. When the decorative plate 300 is bumped and damaged, only the decorative plate 300 needs to be replaced, thereby reducing the maintenance cost of the water purifier 1000. The decorative plate 300 can be made of a metal material, or it can be made of a harder plastic, which is not specifically limited here. The decorative plate 300 can be mounted on the housing 200 by screw connection, or it can be mounted on the housing 200 by buckling, which is not specifically limited here.

[0153] Preferably, the outer wall of the housing 200 is concavely provided with a mounting groove, and the decorative plate 300 is installed in the mounting groove, so that the decorative plate 300 can be accommodated in the mounting groove, thereby reducing the volume of the water purifier 1000.

[0154] In some embodiments of the present application, the water purifier 1000 also includes a housing, the housing has an installation cavity, the filter element assembly 100 is installed in the housing, and the housing 200 is located in the installation cavity. In this way, the housing can protect the filter element assembly 100. The housing can be made of a metal material, or it can be made of a harder plastic, which is not specifically limited here. The filter element assembly 100 can be installed in the installation cavity through the waterway structure 113, and the filter element assembly 100 can also be installed in the installation cavity through the housing 200, which is not specifically limited here.

[0155] In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional 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 referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0156] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0157] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0158] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. 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 method.

[0159] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A filter element assembly, characterized in that: include: A waterway plate, comprising a plate body, a plurality of filter element mounting seats arranged on the plate body, and a waterway structure member arranged on the filter element mounting seats, wherein the central axes of the plurality of filter element mounting seats define a central axis surface, the waterway structure member has a waterway that sequentially connects the plurality of filter element mounting seats, and the plurality of filter element mounting seats at least include a first mounting seat and a second mounting seat; A pre-treatment filter element is coaxially mounted with the first mounting seat to be connected to the waterway; A reverse osmosis filter element is coaxially mounted with the second mounting seat to be connected to the waterway, and along the water flow direction, the reverse osmosis filter element is located downstream of the pre-treatment filter element; as well as A flow meter is installed on the water channel structure to access the water channel, and along the water flow direction, the flow meter is located upstream of the pre-treatment filter element, and the central axis plane crosses the flow meter.

2. The filter element assembly according to claim 1, characterized in that: Also includes: Siren; as well as, A circuit board is electrically connected to the flow meter and the alarm, and the circuit board can control the operation of the alarm according to the detection result of the flow meter.

3. The filter element assembly according to claim 2, characterized in that: Also includes: A battery is electrically connected to the circuit board and is used to supply power to the circuit board, the flow meter and the alarm.

4. The filter element assembly according to claim 3, characterized in that: The waterway plate has a receiving groove, and the receiving groove is located on one side of the central axis surface. The circuit board, the alarm and the battery are all installed in the receiving groove.

5. The filter element assembly according to claim 4, characterized in that: The receiving tank is disposed adjacent to the flow meter.

6. The filter element assembly according to claim 5, characterized in that: Also includes: The cover body is arranged on the notch of the containing groove to seal the containing groove.

7. The filter element assembly according to claim 1, characterized in that: The plurality of filter element mounting seats further include a third mounting seat, and the filter element assembly further includes: The PP cotton filter element is coaxially installed with the third mounting seat to be connected to the waterway, and along the water flow direction, the PP cotton filter element is located upstream of the flow meter.

8. The filter element assembly according to claim 7, characterized in that: Also includes: A three-sided valve is installed on the water channel structure and is located on one side of the central axis surface, and a first water inlet of the three-sided valve is connected to a water outlet of the pre-treatment filter element through the water channel, and a water outlet of the three-sided valve is connected to a water inlet of the reverse osmosis filter element through the water channel; a pressure tank, connected with the water outlet of the reverse osmosis filter element and the second water inlet of the three-sided valve through the water channel; and A one-way valve is arranged between the reverse osmosis filter element and the pressure tank, and only allows water in the reverse osmosis filter element to flow to the pressure tank in one direction.

9. The filter element assembly according to claim 8, characterized in that: The three-sided valve is located between the first mounting seat and the second mounting seat.

10. The filter element assembly according to claim 8, characterized in that: Also includes: A pressure pipe is installed on the water channel structure and is located on the side of the central axis surface away from the three-sided valve. The pressure tank is connected to the second water inlet through the pressure pipe.

11. The filter element assembly according to claim 10, characterized in that: The one-way valve is installed on the side of the central axis surface away from the three-sided valve.

12. The filter element assembly according to claim 11, characterized in that The one-way valve and the pressure pipe are partially stacked and spaced apart in a vertical direction.

13. The filter element assembly according to claim 10, characterized in that: Also includes: A wastewater valve is arranged on the waterway structure and is connected to the wastewater outlet of the reverse osmosis filter element through the waterway, so as to only allow the wastewater of the reverse osmosis filter element to flow unidirectionally to the drain outlet of the waterway plate; The wastewater valve and the three-sided valve are located on the same side of the central axis surface.

14. The filter element assembly according to claim 13, characterized in that: The plurality of filter element mounting seats further include a fourth mounting seat, and the filter element assembly further includes: A post-processing filter element is coaxially mounted with the fourth mounting seat to be connected to the waterway, and along the water flow direction, the post-processing filter element is located downstream of the reverse osmosis filter element; Wherein, the one-way 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.

15. The filter element assembly according to claim 14, characterized in that: The plurality of filter element mounting seats further include a fifth mounting seat, and the filter element assembly further includes: The mineralized filter element is coaxially installed with the fifth mounting seat to be connected to the waterway, and along the water flow direction, the mineralized filter element is located downstream of the post-treatment filter element.

16. The filter element assembly according to claim 15, characterized in that: The waterway comprises: A first flow channel, one end of which is connected to the water inlet of the waterway plate, and the other end of which is connected to the water inlet of the PP cotton filter element through the third mounting seat, and the water outlet of the PP cotton filter element is connected to the water inlet of the flow meter through the third mounting seat; A second flow channel, one end of which is connected to the water outlet of the flow meter, and the other end of which is connected to the water inlet of the pre-treatment filter element through the first mounting seat; A third flow channel, one end of which is connected to the water outlet of the pre-treatment filter element through the first mounting seat, and the other end of which is connected to the first water inlet of the three-sided valve; a fourth flow channel, one end of which is connected to the water outlet of the three-surface valve, and the other end of which is connected to the water inlet of the reverse osmosis filter element through the second mounting seat; a fifth flow channel, one end of which is connected to the water outlet of the reverse osmosis filter element through the second mounting seat, and the other end of which is connected to the water inlet of the one-way valve; a wastewater channel, one end of which is connected to the wastewater outlet of the reverse osmosis filter element through the second mounting seat, and the other end of which is connected to the wastewater valve; a sixth flow channel, one end of which is in communication with the water outlet of the one-way valve, the other end of which is in communication with the pressure tank, and is in communication with the water inlet of the post-processing filter element through the fourth mounting seat, and is in communication with the second water inlet of the three-sided valve through the pressure channel; a seventh flow channel, one end of which is connected to the water outlet of the post-treatment filter element through the fourth mounting seat, and the other end of which is connected to the water inlet of the mineralization filter element through the fifth mounting seat; and The eighth flow channel has one end connected to the water outlet of the mineralized filter element through the fifth mounting seat, and the other end connected to the water outlet of the waterway plate.

17. The filter element assembly according to claim 16, characterized in that The mid-axis plane crosses the second flow channel, the third flow channel, the fourth flow channel, the wastewater channel, and the seventh flow channel; The fifth channel is located at a side of the central axis surface where the one-way valve is disposed.

18. The filter element assembly according to claim 16, characterized in that: The sixth flow channel is provided with an escape groove on the inner wall surface close to the post-processing filter element, the bottom of the escape groove is connected to the water inlet of the post-processing filter element, and the escape groove is located between the connection port of the waterway connected to the pressure tank and the one-way valve.

19. The filter element assembly according to claim 15, characterized in that: The distance between the central axes of two adjacent filter element mounting seats is a, wherein 57mm≤a≤141mm.

20. The filter element assembly according to any one of claims 1 to 19, characterized in that: The pre-treatment filter element comprises a filter element body and a driving unit, wherein the driving unit is mounted on the filter element body, and the structures of the filter element mounting seats are the same; The first mounting base comprises: seat body; A rotating member, rotatably mounted on the seat body to connect or block the waterway; and A transmission part, arranged on the rotating member; Wherein, the driving part can be plug-fitted with the transmission part to drive the rotating member to rotate.

21. The filter element assembly according to claim 20, characterized in that The pre-treatment filter element further comprises a guide portion, and the guide portion is installed on the filter element body; 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 part is located on the surface of the rotating member facing away from the groove bottom of the mounting groove; The first mounting seat also includes: A guide protrusion protrudes from the groove wall of the installation groove and extends along the circumference of the installation groove; Wherein, the guide portion can extend between the guide protrusion and the bottom of the installation groove.

22. The filter element assembly according to claim 21, characterized in that The first mounting seat also includes: The 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 toward the groove bottom of the mounting groove along the axial direction of the mounting groove.

23. The filter element assembly according to claim 22, characterized in that The number of the guide parts of the pre-treatment filter element is two; The number of the guide protrusions and the limiting protrusions are both 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 in a one-to-one correspondence; The limiting protrusion is arranged at an end of the corresponding guiding protrusion away from the other limiting protrusion.

24. The filter element assembly according to claim 23, characterized in that A guide slope is provided on one side where the guide protrusion is connected to the limiting protrusion, and the guide slope extends from a direction close to the bottom of the installation groove toward a direction close to the adjacent avoidance channel.

25. The filter element assembly according to claim 21, characterized in that A positioning groove is concavely provided on one side of the guide protrusion facing the bottom of the corresponding installation groove; The pre-treatment filter element also includes: A positioning portion, convexly disposed on a surface of the guide portion facing the guide convex portion; Wherein, when the first mounting seat is connected with the water channel, the positioning portion is plug-fitted into the positioning groove.

26. A water purifier, characterized in that: include: shell; as well as The filter element assembly according to any one of claims 1 to 25; Wherein, the outer shell cover is arranged on a side of the water channel structure away from the filter element mounting seat.

27. The water purifier according to claim 26, characterized in that Also includes: The decorative plate is installed on the outer peripheral wall of the shell.

28. The water purifier according to claim 26, characterized in that include: The box body is provided with an installation cavity, and the filter element assembly is installed in the installation cavity.

Images