Filter cartridge assembly and water purification device

Abstract

The application discloses a filter element assembly and a water purifying device. The filter element assembly comprises a shell, a supporting assembly, a first filter element and a second filter element. The shell has a containing cavity. One end of the shell is provided with a mounting portion. The mounting portion is formed with a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the containing cavity. The supporting assembly is arranged in the containing cavity and abuts against and seals the inner wall of the shell, so that the inner wall of the shell is at least divided into a first inner wall and a second inner wall. A first cavity is formed between the supporting assembly and the first inner wall of the shell. A second cavity is formed between the supporting assembly and the second inner wall of the shell. The first filter element is arranged in the first cavity and has a hollow structure. The second filter element is arranged in the second cavity and has a hollow structure. The application can solve the problem that the volume occupancy of the filter element in the filter element assembly is low in the prior art, so that the filtering effect of the filter element assembly is improved.

Description

Technical Field

[0001] This invention relates to the field of water purification electrical appliances, and in particular to a filter element assembly and a water purification device. Background Technology

[0002] In related technologies, water purifiers typically have separate pre-filters and post-filters to achieve the same or different filtration functions. When users replace the filters, both filters need to be replaced simultaneously, which is cumbersome. Integrating the pre-filter and post-filter into a single unit eliminates the need to replace only one filter assembly. However, existing technologies suffer from flawed filter assembly design, resulting in a low volumetric occupancy of the filter elements within the assembly, thus affecting its filtration efficiency. Summary of the Invention

[0003] The main objective of this invention is to propose a filter element assembly that addresses the problem of low volume occupancy of filter elements within the filter element assembly in the prior art, thereby improving the filtration efficiency of the filter element assembly.

[0004] To achieve the above objectives, the present invention provides a filter element assembly, which includes:

[0005] The outer shell has a receiving cavity, and one end of the outer shell is provided with a mounting part, the mounting part having a first water inlet, a first water outlet, a second water inlet and a second water outlet communicating with the receiving cavity;

[0006] A support assembly is disposed within the receiving cavity and abuts against and seals against the inner wall of the outer shell, thereby dividing the inner wall of the outer shell into at least a first inner wall and a second inner wall. A first chamber is formed between the support assembly and the first inner wall of the outer shell, and a second chamber is formed between the support assembly and the second inner wall of the outer shell. The first water inlet and the first water outlet communicate with the first chamber, and the second water inlet and the second water outlet communicate with the second chamber.

[0007] A first filter element, disposed within the first chamber and having a hollow structure; and

[0008] The second filter element is disposed in the second chamber and has a hollow structure.

[0009] In one embodiment, the contact surface between the support component and the inner wall of the housing is arranged in a ring along the circumference of the housing, and the first water inlet, the first inner wall and the second inner wall are arranged sequentially along the axial direction of the housing.

[0010] In one embodiment, a first flow channel is formed between the first filter element and the first inner wall of the housing, and a second flow channel is formed between the first filter element and the support assembly, wherein the first flow channel and the second flow channel are connected through the first filter element;

[0011] A portion of a third flow channel is formed inside the support assembly, another portion of the third flow channel is formed between the second filter and the second inner wall of the housing, and a fourth flow channel is formed inside the support assembly, the fourth flow channel being connected to another portion of the third flow channel through the second filter.

[0012] In one embodiment, the support assembly includes a first support member and a second support member, the first filter member is sleeved on the first support member, the second support member has a first tube segment disposed within the first support member, and the outer peripheral wall of the first support member near the second filter member is sealed to the inner peripheral wall of the outer shell by a sealing member.

[0013] In one embodiment, a second flow channel is formed between the first filter and the first support, and a portion of the third channel is formed between the first support and the first pipe segment. The second support also has a second pipe segment disposed within the second filter. The first pipe segment and the second pipe segment communicate to form the fourth flow channel. A first mounting groove for mounting the first filter is formed at the end of the first support away from the first inlet.

[0014] In one embodiment, the maximum inner diameter of the first pipe segment is D1, wherein D1 satisfies: 8mm≤D1≤16mm;

[0015] And / or, the second support member further has a third pipe section connecting the first pipe section and the second outlet, the outer diameter of the first pipe section is D2, the outer diameter of the third pipe section is D3, the D2 is greater than the D3, and the difference between the D2 and the D3 is not less than 1 mm.

[0016] In one embodiment, a support platform is provided on the inner peripheral wall of the outer shell, and the end of the first support member away from the first water inlet is supported on the support platform. The first filter member is disposed between the support platform and the first water inlet.

[0017] Alternatively, the support assembly may further include a third support member arranged in a ring, the third support member being sleeved outside the second filter member and abutting against and supporting the outer shell, and the bottom end of the first support member abutting against and supporting the third support member.

[0018] In one embodiment, the bottom end of the first support member abuts against and is supported on the second support member, and a liquid passage communicating with another part of the third flow channel is formed between the bottom end of the first support member and the second support member; the second support member abuts against and is supported on the outer shell;

[0019] Alternatively, the second filter element may have a second filter material end cap at the end away from the first filter element. The second filter material end cap abuts and is supported on the housing. A second mounting groove for installing the second filter element is formed on the second filter material end cap. The second support member abuts and is supported on the second filter material end cap.

[0020] In one embodiment, a first groove is formed at the end of the first support member away from the first water inlet. A plurality of support plates are provided in the first groove. The plurality of support plates are arranged circumferentially around the first pipe section to form a plurality of liquid passages. The liquid passages are connected to another part of the third flow channel. The support plates protrude out of the first groove and abut against and support the second support member.

[0021] The present invention also proposes a water purification device, which includes a body and a filter element assembly as described above, wherein the filter element assembly is disposed within the body.

[0022] The filter element assembly of the present invention includes a housing, a support assembly, a first filter element, and a second filter element. The support assembly is disposed within a receiving cavity and abuts against and seals against the inner wall of the housing, thereby dividing the inner wall of the housing into at least a first inner wall and a second inner wall. A first chamber is formed between the support assembly and the first inner wall of the housing, and a second chamber is formed between the support assembly and the second inner wall of the housing. When water flows into the first chamber from the first inlet and is filtered by the first filter element, the filtered water can flow out from the first outlet; when water flows into the second chamber from the second inlet and is filtered by the second filter element, the filtered water can flow out from the second outlet. The first chamber and the second chamber are independent of each other, and the filtration processes within each chamber do not affect each other, ensuring filtration efficiency. The reliability of the filter element assembly is improved. Furthermore, this design directly utilizes the space between the first inner wall of the outer casing and the support assembly to form a first chamber, and directly utilizes the space between the second inner wall of the outer casing and the support assembly to form a second chamber. This results in a larger internal space for the first and second chambers. The formation of the first and second chambers fully utilizes the inner wall of the outer casing, avoiding the need for additional components to form chambers within the housing, thus saving space. With a fixed outer casing size, the first and second chambers formed in this design have a larger space, allowing for the filling of more first and second filter elements. The high volumetric occupancy of the first and second filter elements within the housing improves the filtration efficiency of the filter element assembly. In addition, the first inlet, first outlet, second inlet, and second outlet are located at the same end of the outer casing, facilitating quick connection of the filter element assembly to the water supply and drainage structures of the water purification device, saving internal installation space for the filter element assembly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment of the filter element assembly of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure after structural decomposition;

[0026] Figure 3 for Figure 1 A sectional view of the structure in the middle;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 for Figure 1 A schematic diagram of water flow within the middle filter element assembly;

[0029] Figure 6 for Figure 2 A schematic diagram of some of the structures in it;

[0030] Figure 7 for Figure 6 A schematic diagram of the structure of the first support component;

[0031] Figure 8 for Figure 2 A cross-sectional view of the second support member in the structure;

[0032] Figure 9 This is a cross-sectional view of a second embodiment of the filter element assembly of the present invention;

[0033] Figure 10 for Figure 9 Enlarged view of point B in the middle;

[0034] Figure 11 This is a cross-sectional view of a third embodiment of the filter element assembly of the present invention;

[0035] Figure 12 for Figure 11 Enlarged view of point C in the middle;

[0036] Figure 13 This is a cross-sectional view of a fourth embodiment of the filter cartridge assembly of the present invention;

[0037] Figure 14 for Figure 13Enlarged view of point D in the middle.

[0038] Explanation of icon numbers:

[0039]

[0040]

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] This invention proposes a filter element assembly, which aims to solve the problem of low volume occupancy of filter elements in the filter element assembly in the prior art, so as to improve the filtration effect of the filter element assembly.

[0046] Please see Figures 1 to 4In one embodiment of the filter element assembly 10 of the present invention, the filter element assembly 10 includes a housing 100, a support assembly 200, a first filter element 300, and a second filter element 400. The housing 100 has a receiving cavity 110, and one end of the housing 100 is provided with a mounting portion. The mounting portion forms a first inlet 120, a first outlet 130, a second inlet 140, and a second outlet 150 communicating with the receiving cavity 110. The support assembly 200 is disposed within the receiving cavity 110 and abuts and seals against the inner wall of the housing 100, so as to divide the inner wall of the housing 100 into at least a first inner wall 160 and a second inner wall 160. The second inner wall 170 forms a first chamber 111 between the support assembly 200 and the first inner wall 160 of the outer shell 100, and the second inner wall 170 of the support assembly 200 forms a second chamber 112 between the support assembly 200 and the second inner wall 170 of the outer shell 100. The first water inlet 120 and the first water outlet 130 communicate with the first chamber 111, and the second water inlet 140 and the second water outlet 150 communicate with the second chamber 112. The first filter element 300 is disposed in the first chamber 111 and has a hollow structure. The second filter element 400 is disposed in the second chamber 112 and has a hollow structure.

[0047] It is understood that a receiving cavity 110 is formed within the outer casing 100, which is used to house the first filter element 300 and the second filter element 400. To ensure that the first filter element 300 and the second filter element 400 have a large size and filtration path, the outer casing 100 can be configured as a cuboid or cylindrical structure. Of course, in other embodiments, the outer casing 100 can also be an irregular shape, so that the outer casing 100 can be fitted into the internal structure of the water purification device, thereby achieving the purpose of saving space.

[0048] Furthermore, the first water inlet 120 and the second water inlet 140 can be located at the same end of the outer casing 100, or they can be located at different ends of the outer casing 100; the first water outlet 130 and the second water outlet 150 can be located at the same end of the outer casing 100, or they can be located at different ends of the outer casing 100, and the specific location is not limited here. In this embodiment, the first water inlet 120, the first water outlet 130, the second water inlet 140, and the second water outlet 150 are located at the same end of the outer casing 100. Specifically, one end of the outer casing 100 is provided with a mounting portion, which can protrude from the end face of the outer casing 100, or it can be located inside the outer casing 100. The mounting portion forms a first water inlet 120, a first water outlet 130, a second water inlet 140, and a second water outlet 150 that communicate with the receiving cavity 110. The mounting portion is used to connect the water supply and drainage structures of the water purification device.

[0049] The mounting part and the outer casing 100 can be integrally formed, with the mounting part formed at the end of the outer casing 100. This results in better sealing of the outer casing 100 and lower manufacturing costs. Alternatively, the mounting part and the outer casing 100 can be independent components. The mounting part is mounted on the outer casing 100 by a locking member, or the mounting part is itself snapped into the outer casing 100, with a sealed connection between the two. In this way, the outer casing 100 and the mounting part are independent parts, which is beneficial for the assembly of the filter element assembly 10.

[0050] Furthermore, the support component 200 can abut and seal against the inner peripheral wall of the outer casing 100, or the support component 200 can abut and seal against the inner top wall of the outer casing 100, or the support component 200 can abut and seal against the inner bottom wall of the outer casing 100. In other words, the specific abutment position between the support component 200 and the inner wall of the outer casing 100 is not limited, as long as it can divide the inner wall of the outer casing 100 into at least a first inner wall 160 and a second inner wall 170. Furthermore, the inner wall of the outer casing 100 is at least divided into a first inner wall 160 and a second inner wall 170. That is, the support assembly 200 can abut and seal with one point of the inner wall of the outer casing 100 to divide the inner wall of the outer casing 100 into a first inner wall 160 and a second inner wall 170; or, the support assembly 200 can abut and seal with two points of the inner wall of the outer casing 100 to divide the inner wall of the outer casing 100 into a first inner wall 160, a second inner wall 170 and a third inner wall; or, the support assembly 200 can abut and seal with multiple points of the inner wall of the outer casing 100 to divide the inner wall of the outer casing 100 into multiple inner walls. A first chamber 111 is formed between the first inner wall 160 and the support assembly 200, and a second chamber 112 is formed between the second inner wall 170 and the support assembly 200. This fully utilizes the inner walls of the outer shell 100 to form the first chamber 111 and the second chamber 112, resulting in larger spaces in both chambers. The first chamber 111 can be filled with a larger number of first filter elements 300, and the second chamber 112 can be filled with a larger number of second filter elements 400. This leads to a higher volumetric occupancy rate of the first and second filter elements 300 within the receiving cavity 110, thus improving the filtration effect of the filter element assembly 10. Of course, in other embodiments, a third chamber is formed between the third inner wall and the support assembly 200. This third chamber may contain a third filter element or other components; specific details are not limited here.

[0051] Furthermore, the support assembly 200 abuts and seals against the inner wall of the outer casing 100, dividing the inner wall of the outer casing 100 into a first inner wall 160 and a second inner wall 170. A first chamber 111 is formed between the support assembly 200 and the first inner wall 160, and a second chamber 112 is formed between the support assembly 200 and the second inner wall 170. When water flows into the first chamber 111 from the first inlet 120 and is filtered by the first filter element 300, it flows out from the first outlet 130; when water flows into the second chamber 112 from the second inlet 140 and is filtered by the second filter element 400, it flows out from the second outlet 150. Thus, the first chamber 111 and the second chamber 112 are independent of each other, resulting in better sealing and easier assembly. The method of sealing between the support assembly 200 and the inner wall of the outer casing 100 includes, but is not limited to, sealing through the sealing element 221 or sealing through the support assembly 200 itself; specific methods are not limited here.

[0052] In addition, the receiving cavity 110 is provided with two independent filter elements, namely the first filter element 300 and the second filter element 400. The first filter element 300 and the second filter element 400 can achieve the same or different filtration functions. This application integrates the first filter element 300 and the second filter element 400 into the interior of a filter element assembly 10, thereby forming a pre-filter plus post-filter composite filter element. In this way, when the user needs to replace the filter element assembly 10, the user only needs to replace it once to meet the usage requirements, making the operation simpler and more convenient to use. In addition, a filter element assembly 10 also helps to save the installation space inside the water purification device.

[0053] The filter element assembly 10 of the present invention includes a housing 100, a support assembly 200, a first filter element 300, and a second filter element 400. The support assembly 200 is disposed within a receiving cavity 110 and abuts against and seals against the inner wall of the housing 100, thereby dividing the inner wall of the housing 100 into at least a first inner wall 160 and a second inner wall 170. A first chamber 111 is formed between the support assembly 200 and the first inner wall 160 of the housing 100, and a second chamber 112 is formed between the support assembly 200 and the second inner wall 170 of the housing 100. When water flows into the first chamber 111 from the first inlet 120 and is filtered by the first filter element 300, the filtered water can flow out from the first outlet 130; when water flows into the second chamber 112 from the second inlet 140 and is filtered by the second filter element 400, the filtered water can flow out from the second outlet 150. The first chamber 111 and the second chamber 112 are independent of each other, and the filtration processes within each chamber do not overlap. The mutual influence ensures the reliability of the filter element assembly 10. Furthermore, this solution directly utilizes the space between the first inner wall 160 of the outer shell 100 and the support assembly 200 to form the first chamber 111, and directly utilizes the space between the second inner wall 170 of the outer shell 100 and the support assembly 200 to form the second chamber 112. This results in a larger internal space for the first chamber 111 and the second chamber 112. The formation of the first chamber 111 and the second chamber 112 makes full use of the inner wall of the outer shell 100, avoiding the situation where additional parts are set up in the receiving cavity 110 to form chambers and occupy space. When the size of the outer shell 100 is fixed, the space of the first chamber 111 and the second chamber 112 formed in this solution is larger, which can fill more first filter elements 300 and second filter elements 400. The first filter elements 300 and the second filter elements 400 have a high volume occupancy rate in the receiving cavity 110, thereby improving the filtration effect of the filter element assembly 10. In addition, the first inlet 120, the first outlet 130, the second inlet 140 and the second outlet 150 are located at the same end of the housing 100, so as to facilitate the quick connection of the filter element assembly 10 to the water supply and drainage structure of the water purification device, and save the installation space inside the filter element assembly 10.

[0054] In one embodiment, the contact surface between the support component 200 and the inner wall of the housing 100 is arranged in a ring along the circumference of the housing 100, and the first water inlet 120, the first inner wall 160 and the second inner wall 170 are arranged sequentially along the axial direction of the housing 100.

[0055] It is understood that in this solution, the support component 200 abuts and seals against the inner peripheral wall of the outer shell 100. The abutment surface between the support component 200 and the inner wall of the outer shell 100 is arranged in a ring shape, so that the inner wall of the outer shell 100 is divided into a first inner wall 160 and a second inner wall 170 along its axial direction. The first water inlet 120 can be located at the upper end of the outer shell 100. When the axial direction of the outer shell 100 is arranged in the vertical direction, the first water inlet 120, the first inner wall 160 and the second inner wall 170 are arranged sequentially from top to bottom along the axial direction of the outer shell 100. In this way, the formation of the first chamber 111 makes full use of the first inner wall 160 of the outer shell 100, and the formation of the second chamber 112 makes full use of the second inner wall 170 of the outer shell 100. The utilization rate of the chambers formed by the inner wall of the outer shell 100 is high, which is conducive to increasing the space of the chambers, so that the first filter element 300 and the second filter element 400 have a larger filling space, thereby improving the filtration effect of the filter element assembly 10. In this embodiment, when the axial direction of the outer shell 100 is arranged in the vertical direction, the abutment surface between the support component 200 and the inner wall of the outer shell 100 is arranged in a ring shape in the horizontal direction. The first inner wall 160 is located above the second inner wall 170. That is, the first chamber 111 is located above at least part of the second chamber 112. Of course, the first chamber 111 can also be located above the second chamber 112. The specific arrangement can be made according to the needs.

[0056] Please see Figures 2 to 5 In one embodiment, a first flow channel 310 is formed between the first filter element 300 and the first inner wall 160 of the housing 100, and a second flow channel 320 is formed between the first filter element 300 and the support assembly 200. The first flow channel 310 and the second flow channel 320 are connected through the first filter element 300.

[0057] A portion of a third flow channel 410 is formed inside the support assembly 200, another portion of the third flow channel 410 is formed between the second filter element 400 and the second inner wall 170 of the outer shell 100, and a fourth flow channel 210 is formed inside the support assembly 200. The fourth flow channel 210 and another portion of the third flow channel 410 are connected through the second filter element 400.

[0058] Understandably, the first flow channel 310 is connected to one of the first inlet 120 and the first outlet 130, and the second flow channel 320 is connected to the other of the first inlet 120 and the first outlet 130. The third flow channel 410 is connected to one of the second inlet 140 and the second outlet 150, and the fourth flow channel 210 is connected to the other of the second inlet 140 and the second outlet 150. The first flow channel 310 and the second flow channel 320 are located in the first chamber 111, and the third flow channel 410 and the fourth flow channel 210 are located in the second chamber 112. The water in the first chamber 111 and the water in the second chamber 112 are isolated from each other during flow, thereby enabling the first filter element 300 and the second filter element 400 to achieve the same or different filtration effects, ensuring that the filter element assembly 10 can have different filtration modes. For example, domestic water can be filtered through the first filter element 300, and drinking water can be filtered through the second filter element 400.

[0059] Please see Figure 5 In one embodiment of this application, the water flow process within the receiving cavity 110 is as follows:

[0060] The first inlet 120 receives external tap water, which flows through the first channel 310 and is filtered by the first filter element 300 to obtain domestic water. The domestic water flows along the second channel 320 to the first outlet 130, and then flows out from the first outlet 130 (e.g., Figure 5 (The direction indicated by the thin arrow) is provided for user use.

[0061] The second inlet 140 receives pure water filtered by the reverse osmosis filter element. The pure water flows through the third flow channel 410 inside the support assembly 200 and the third flow channel 410 between the second filter element 400 and the second inner wall 170 before flowing into the second filter element 400. After being filtered by the second filter element 400, the pure water becomes drinking water. The drinking water flows along the fourth flow channel 210 to the second outlet 150 and flows out (e.g., Figure 5 (In the direction indicated by the thick arrow), for users to drink.

[0062] It should be noted that during the flow of water in the aforementioned receiving cavity 110, since the support component 200 is sealed against the inner wall of the outer shell 100, and the first chamber 111 and the second chamber 112 are separated, the filtration process of water in the first chamber 111 and the filtration process of water in the second chamber 112 will not affect each other. Users can choose the first filter element 300 or the second filter element 400 to filter water according to their own needs. Users can also inject water into the first water inlet 120 and the second water inlet 140 at the same time so that the first filter element 300 and the second filter element 400 work at the same time.

[0063] Please see Figure 3, Figure 6 and Figure 8 In one embodiment, the support assembly 200 includes a first support member 220 and a second support member 230. The first filter member 300 is sleeved on the first support member 220. The second support member 230 has a first tube segment 231 disposed within the first support member 220. The outer peripheral wall of the first support member 220 near the second filter member 400 is sealed to the inner peripheral wall of the outer casing 100 by a sealing member 221.

[0064] It is understandable that the outer peripheral wall of the first support member 220 near the second filter element 400 abuts and seals against the inner peripheral wall of the outer shell 100. That is, the outer peripheral wall of the first support member 220 divides the inner wall of the outer shell 100 into a first inner wall 160 and a second inner wall 170 through the sealing member 221, so that the separated first chamber 111 and second chamber 112 can be easily formed. At the same time, the upper end of the outer shell 100 has a first mounting port, and the mounting part is located at the first mounting port. When the support assembly 200 is installed, the first pipe section 231 is located inside the first support member 220. The outer peripheral wall of the first support member 220 abuts and seals against the inner peripheral wall of the outer shell 100 through the sealing member 221. The first support member 220 and the second support member 230 can be easily installed into the receiving cavity 110 from the first mounting port. The operation is simple, the structural layout inside the receiving cavity 110 is reasonable, and the internal structure of the filter element assembly 10 is optimized.

[0065] Furthermore, an annular groove 226 is provided on the outer peripheral wall of the first support member 220 near the second filter member 400. The sealing member 221 is engaged in the annular groove 226 and abuts against the groove wall of the annular groove 226 and the inner peripheral wall of the outer shell 100, respectively. This arrangement ensures the stability of the sealing member 221 fitted onto the first support member 220 and the stability of the sealing member 221 abutting against the inner peripheral wall of the outer shell 100. In addition, the number of annular grooves 226 can be one, two, or more, which is not limited here. In this embodiment, two annular grooves 226 are provided on the outer peripheral wall of the first support member 220 near the second filter member 400. The two annular grooves 226 are arranged at intervals along the axial direction of the outer shell 100. The sealing member 221 is a sealing ring, and the two sealing rings are correspondingly disposed in the two annular grooves 226. This helps to ensure the stability of the sealing between the first support member 220 and the inner wall of the outer shell 100.

[0066] In one embodiment, the first filter element 300 includes an outer layer of folded PP cotton and an inner layer of carbon rod. The folded PP cotton can effectively remove large particulate impurities such as silt and iron filings from the water, while the carbon rod can effectively adsorb impurities such as odors, discoloration, and residual chlorine, thereby further improving water quality.

[0067] In one embodiment, the second filter element 400 may be composed of carbon rods, and the taste of the pure water produced by the reverse osmosis filter element is significantly improved after being filtered by the carbon rods.

[0068] Please see Figures 3 to 8 In one embodiment, a second flow channel 320 is formed between the first filter element 300 and the first support element 220, and a portion of the third channel is formed between the first support element 220 and the first pipe segment 231. The second support element 230 also has a second pipe segment 232 disposed within the second filter element 400. The first pipe segment 231 and the second pipe segment 232 communicate to form the fourth flow channel 210. A first mounting groove 222 for mounting the first filter element 300 is formed at one end of the first support element 220 away from the first inlet 120.

[0069] Understandably, the first inlet 120 is located at the upper end of the outer casing 100, and the end of the first support member 220 away from the first inlet 120 forms a first mounting groove 222. The end of the first filter element 300 away from the first inlet 120 is located within the first mounting groove 222. This allows for quick installation of the first filter element 300 and ensures the stability of the first filter element 300 within the first chamber 111. The first mounting groove 222 is directly provided on the first support member 220, so that the first mounting groove 222 can be formed after the first support member 220 is manufactured. This allows the size of the first mounting groove 222 to be directly determined according to the size of the first support member 220, thereby ensuring that the first filter element 300 has sufficient filling space and facilitating the installation of the first filter element 300, thus optimizing the internal structure of the filter element assembly 10. The first mounting groove 222 can be arranged in a ring shape; the first filter element 300 can be a hollow structure, which facilitates the fitting of the first filter element 300 onto the outside of the first pipe section 231 and its confined installation within the first mounting groove 222. The first mounting groove 222 can restrict the displacement of the first filter element 300, preventing deformation or loosening of the first filter element 300 under water pressure, thus improving the filtration capacity of the first filter element 300.

[0070] Furthermore, the water flow process within the second chamber 112 is as follows: After entering the second inlet 140, the water flows through a portion of the third channel between the first support 220 and the first pipe section 231, then through another portion of the third flow channel 410 between the second filter element 400 and the second inner wall 170 of the outer casing 100. Subsequently, the water flows into the second filter element 400 and is filtered. The filtered water collects in the hollow area inside the second filter element 400, and then flows sequentially into the second pipe section 232 and the first pipe section 231 until it flows out from the second outlet 150. This arrangement ensures that the water flows smoothly through the second filter element 400 within the second chamber 112, guaranteeing the filtration effect of the second filter element 400.

[0071] Please see Figure 3 , Figure 5 and Figure 8 In one embodiment, the maximum inner diameter of the first pipe segment 231 is D1, where D1 satisfies: 8mm ≤ D1 ≤ 16mm. This setting limits the width of the first pipe segment 231 by limiting its maximum inner diameter, thus limiting the space it occupies within the receiving cavity 110. This ensures that the first pipe segment 231 occupies minimal space while fulfilling its function. The first support member 220 is fitted outside the first pipe segment 231, and the first filter element 300 is fitted outside the first support member 220. The smaller space occupied by the first pipe segment 231 facilitates an increase in the space of the first chamber 111, thereby increasing the filling space of the first filter element 300 and improving the filtration effect of the filter assembly 10. The value of D1 can be 8mm, 10mm, 12mm, 14mm, or 16mm, etc., and is not specifically limited here.

[0072] In one embodiment, the second support member 230 further has a third pipe section 233 connecting the first pipe section 231 and the second outlet 150. The outer diameter of the first pipe section 231 is D2, and the outer diameter of the third pipe section 233 is D3. The D2 is greater than the D3, and the difference between the D2 and the D3 is not less than 1 mm.

[0073] It is understood that the second outlet 150 can be located at the upper end of the outer casing 100. The second outlet 150, the third pipe section 233, and the first pipe section 231 are arranged sequentially along the axial direction of the outer casing 100. The third pipe section 233 can be sealed against the inner wall of the second outlet 150 of the outer casing 100 to prevent water flowing into the second chamber 112 from the second inlet 140 from flowing directly out of the gap between the third pipe section 233 and the outer casing 100 without being filtered by the second filter element 400. This improves the reliability of the filter element assembly 10. The inner wall of the third pipe section 233 and the second outlet 150 of the outer casing 100 can be sealed by the sealing element 221. Specifically, the sealing element 221 can be a sealing ring. An annular mounting groove can be provided on the outer peripheral wall of the third pipe section 233. The annular mounting groove is used to limit the sealing ring.

[0074] Furthermore, the first pipe section 231 is disposed within the first support member 220, and the third pipe section 233 is connected to the first pipe section 231. At least part of the third pipe section 233 is also disposed within the first support member 220 and is located near the second inlet 140. This design, by limiting the outer diameter of the second pipe section 232 to be larger than the outer diameter of the third pipe section 233, facilitates increasing the width of the inlet end of the third flow channel 410. This is equivalent to the inlet end of the third flow channel 410 being flared, allowing water entering the second inlet 140 to flow smoothly into the third flow channel 410. This optimizes the internal structure of the filter element assembly 10 and improves the smoothness of water flow into the second chamber 112 for filtration. In addition, the difference between D2 and D3 can be 1mm, 2mm, 3mm, or 5mm, etc., and is not specifically limited here.

[0075] Please see Figure 9 and Figure 10 In one embodiment, a support platform 180 is provided on the inner peripheral wall of the outer shell 100, and the end of the first support member 220 away from the first water inlet 120 is supported on the support platform 180. The first filter member 300 is disposed between the support platform 180 and the first water inlet 120.

[0076] It is understood that there can be one or more support platforms 180, with multiple support platforms 180 arranged sequentially at intervals along the circumference of the outer shell 100. Of course, the support platforms 180 can also be arranged in a ring along the circumference of the outer shell 100; the specific arrangement is not limited here. By providing support platforms 180 on the inner circumferential wall of the outer shell 100 for the first support member 220 to be supported and limited, the water pressure in the first chamber 111 is resisted, thereby improving the stability of the installation of the first support member 220 and the first filter member 300.

[0077] In one embodiment, the support assembly 200 further includes a first filter media end cap 11. The first filter element 300 has a hollow structure. The first filter media end cap 11 is located at the end of the first filter element 300 near the first water inlet 120. The first filter media end cap 11 forms an end cap mounting groove for mounting the first filter element 300. The first filter element 300 filters water. The first filter media end cap 11 is used to install and position the first filter element 300. The end of the first filter element 300 is inserted into the end cap mounting groove to limit the displacement of the first filter element 300 and prevent the first filter element 300 from deforming or loosening under water pressure, thereby ensuring the filtration performance of the first filter element 300.

[0078] In one embodiment, the first filter material end cap 11 is arranged in a ring shape, and the first support member 220 passes through the through hole in the middle of the first filter material end cap 11 and communicates with the second water inlet 140 and the second water outlet 150. The first filter element 300 is a ring filter element, and one end of the first filter element 300 is located in the end cap mounting groove, so that the first filter material end cap 11 can simultaneously position the installation of the first filter element 300 and the first support member 220.

[0079] Please see Figure 13 and Figure 14 In one embodiment, the support assembly 200 further includes a third support member 240 arranged in a ring shape. The third support member 240 is sleeved outside the second filter member 400 and abuts against and supports the outer shell 100. The bottom end of the first support member 220 abuts against and supports the third support member 240.

[0080] It is understood that the third support member 240 is disposed within the receiving cavity 110 and abuts against and supports the outer shell 100, meaning that the bottom wall of the receiving cavity 110 can support the third support member 240. The third support member 240 is arranged in a ring shape and sleeved on the outside of the second filter element 400. The third support member 240 and the second filter element 400 can be spaced apart, so that the third support member 240 will not affect the water flow through the second filter element 400. The first support member 220 abuts against and supports the third support member 240, and the third support member 240 abuts against and supports the outer shell 100, thereby achieving stable support and limiting of the first support member 220 to resist the water pressure in the first chamber 111, improving the stability of the installation of the first support member 220 and the first filter element 300. In addition, the ring-shaped third support member 240 is easy to process and assemble within the outer shell 100, which helps to simplify the internal structure of the filter element assembly 10.

[0081] In one embodiment, the bottom end of the first support member 220 abuts against and is supported on the second support member 230, and a liquid passage 223 communicating with another part of the third flow channel 410 is formed between the bottom end of the first support member 220 and the second support member 230; the second support member 230 abuts against and is supported on the outer shell 100 (e.g., Figure 11 and Figure 12 (as shown); or, the second filter element 400 has a second filter material end cap 12 at the end away from the first filter element 300, the second filter material end cap 12 abuts and is supported on the housing 100, and a second mounting groove 13 is formed on the second filter material end cap 12 for mounting the second filter element 400, and the second support member 230 abuts and is supported on the second filter material end cap 12 (as shown); Figure 3 and Figure 4 (As shown).

[0082] It is understood that by forming a liquid passage 223 between the bottom end of the first support member 220 and the second support member 230, the liquid passage 223 is part of the third flow channel 410 and is connected to another part of the third flow channel 410, so that water can flow through the second filter member 400 for filtration and then flow out from the fourth channel.

[0083] When the second support member 230 directly abuts against and is supported on the outer casing 100, the way the second support member 230 is positioned and installed in the receiving cavity 110 is simple, which helps to simplify the internal structure of the filter element assembly 10. In one embodiment, the second support member 230 is provided with a liquid passage hole communicating with the fourth channel, which facilitates the smooth flow of water through the second filter element 400.

[0084] When the second support member 230 is indirectly supported on the outer shell 100, the support assembly 200 also includes a second filter material end cap 12. The second filter material end cap 12 is located at the end of the second filter member 400 away from the first support member 220. The second filter material end cap 12 is supported on the outer shell 100, and the second support member 230 is supported on the second filter material end cap 12. The bottom end of the first support member 220 is supported on the second support member 230 to support and limit the first support member 220, thereby resisting the water pressure in the first chamber 111. Both the first support member 220 and the second support member 230 can be stably installed in the receiving cavity 110.

[0085] Furthermore, the second filter element 400 serves to filter water, and the second filter media end cap 12 is also used for positioning and installing the second filter element 400. The bottom end of the second filter element 400 is inserted into the second mounting groove 13 to limit the displacement of the second filter element 400 and prevent the second filter element 400 from deforming or loosening under water pressure, thus ensuring the filtration performance of the second filter element 400.

[0086] Please see Figure 3 , Figure 6 and Figure 7 In one embodiment, a first groove 224 is formed at the end of the first support member 220 away from the first water inlet 120. A plurality of support plates 225 are provided in the first groove 224. The plurality of support plates 225 are arranged circumferentially around the first pipe section 231 to form a plurality of liquid passages 223. The liquid passages 223 are connected to another part of the third flow channel 410. The support plates 225 protrude from the first groove 224 and abut against and support the second support member 230.

[0087] It is understood that the interior of the first support member 220 is hollow, and the first pipe section 231 is located inside the first support member 220, forming part of the third channel between the first support member 220 and the first pipe section 231. By setting a first groove 224 at the end of the first support member 220 away from the first inlet 120, and providing multiple support plates 225 in the first groove 224, water flowing into the third channel will accumulate at the first groove 224. The accumulated water will then flow into another part of the third flow channel 410 along the multiple liquid passages 223 formed by the multiple support plates 225. The other part of the third flow channel 410 is formed by the second filter element 400 and the second inner wall 170 of the outer shell 100. This makes the structure of the first support member 220 and the second support member 230 fit together compactly, and the other part of the third flow channel 410 makes full use of the second inner wall 170 of the outer shell 100. The utilization rate of the inner wall of the outer shell 100 is high, the space utilization rate is large, and the internal structure of the filter element assembly 10 is optimized.

[0088] In addition, the support plate 225 protrudes from the first groove 224 and abuts against the second support member 230, which not only improves the stability of the first support member 220 abutting against the second support member 230, but also helps to increase the height of the liquid passage 223, thereby improving the smoothness of water flow through the liquid passage 223.

[0089] Please see Figure 3 , Figure 4 and Figure 6In one embodiment, a first limiting part 227 is provided within the second flow channel 320, and the first limiting part 227 abuts against the first filter element 300 and the first support element 220. It is understood that the function of the first limiting part 227 is to support the flow space within the second flow channel 320, that is, the first limiting part 227 can maintain the distance between the first filter element 300 and the first support element 220, thereby maintaining the water flow capacity within the second flow channel 320 and preventing blockage after prolonged use. The first limiting part 227 can be a protrusion, rib, or other structure; the specific design is not limited here, as long as the first limiting part 227 can support the gap between the first filter element 300 and the first support element 220. The first limiting part 227 can be a single part independent of the first filter element 300 or the first support element 220, or it can be an integrally formed structure within the first filter element 300 or the first support element 220. In this embodiment, the first limiting part 227 and the first support member 220 are integrally formed.

[0090] Please see Figure 3 , Figure 4 and Figure 8 In one embodiment, a second limiting part 234 is provided between the first support member 220 and the first pipe segment 231, which form part of the third channel. The second limiting part 234 abuts against the first support member 220 and the first pipe segment 231. It is understood that the function of the second limiting part 234 is to support the flow space within the third flow channel 410, that is, the second limiting part 234 can maintain the distance between the first support member 220 and the first pipe segment 231, thereby maintaining the water flow capacity within the third flow channel 410 and preventing blockage after prolonged use. The second limiting part 234 can be a protrusion, rib, or other structure; the specific design is not limited here, as long as the second limiting part 234 can support the gap between the first support member 220 and the first pipe segment 231. The second limiting part 234 can be a single part independent of the first support member 220 or the first pipe segment 231, or it can be an integrally formed structure of the first support member 220 or the first pipe segment 231. In this embodiment, the second limiting part 234 is integrally formed with the first pipe section 231.

[0091] In one embodiment, the outer peripheral wall of the second pipe segment 232 of the second support member 230 is provided with a liquid passage communicating with the fourth flow channel 210. It is understood that there can be one or more liquid passages. By providing liquid passages, water filtered by the second filter element 400 can quickly flow into the fourth flow channel 210, thus improving the smoothness of water flow into the fourth flow channel 210. The liquid passage can be perforated or grooved; no specific limitation is made here. Specifically, in this embodiment, the outer peripheral wall of the end of the second pipe segment 232 away from the first pipe segment 231 is provided with a liquid passage groove 235 communicating with the fourth flow channel 210 (e.g., ...). Figure 4 and Figure 8 As shown, the structure of the liquid passage 235 is easy to process on the second pipe section 232, so that the second support member 230 in this scheme can improve the smoothness of water flow in the second chamber 112.

[0092] Please see Figure 2 and Figure 3 In one embodiment, a stop valve 14 is provided in each of the first inlet 120, the first outlet 130, the second inlet 140, and the second outlet 150. The stop valve 14 has an open position and a closed position. In the open position, the corresponding first inlet 120, first outlet 130, second inlet 140, and second outlet 150 are in a water-guiding state; in the closed position, the corresponding first inlet 120, first outlet 130, second inlet 140, and second outlet 150 are in a water-blocking state.

[0093] Understandably, when the filter assembly 10 is working normally, the stop valve 14 is in the open position. The first inlet 120 receives tap water from the outside, the first filter element 300 filters the tap water to form domestic water, and then discharges it through the first outlet 130. The second inlet 140 receives pure water filtered by the reverse osmosis filter element. After passing through the second filter element, the pure water forms drinking water, which flows out through the second outlet 150 for user use. In the closed position, the corresponding first inlet 120, first outlet 130, second inlet 140, and second outlet 150 are in a water-blocking state, preventing residual water in the filter assembly 10 from leaking, avoiding contamination of the cabinet or spillage on the user, and ensuring the high reliability of the filter assembly 10. In addition, the stop valve 14 is located at the mounting part. After disassembling the filter assembly 10, it is necessary to avoid touching the stop valve 14 to prevent residual water from leaking through the first inlet 120, first outlet 130, second inlet 140, and second outlet 150.

[0094] Please see Figures 1 to 3In one embodiment, the outer casing 100 further includes a first cover 15, which is disposed at the end of the outer casing 100 away from the first water inlet 120. The first cover 15 is detachably mounted on the outer casing 100. It is understood that the end of the outer casing 100 away from the first water inlet 120 is open. By opening the first cover 15, the support assembly 200, the first filter element 300, and the second filter element 400 can be installed in the receiving cavity 110. The first cover 15 is then fixed to the outer casing 100 to close the opening of the outer casing 100.

[0095] In one embodiment, the outer casing 100 further includes a second cover 16. A first positioning member is provided on the outer side of the outer casing 100. The second cover 16 is detachably mounted on the outside of the first cover 15. The second cover 16 is provided with a second positioning member, and the first and second positioning members are shaped to restrict the rotation of the second cover 16. It is understood that by detachably mounting the second cover 16 on the outside of the first cover 15, the assembly of the second cover 16 is facilitated, and the second cover 16 can cover the first cover 15, thereby ensuring the integrity of the overall structure of the filter element assembly 10. Furthermore, the first and second positioning members can position the second cover 16, preventing it from rotating arbitrarily and ensuring structural stability.

[0096] Furthermore, one of the first positioning member and the second positioning member can be a notch, and the other is a positioning rib adapted to the notch. The end of the positioning rib facing the notch is set inside the notch to realize the positioning and installation of the second cover 16. In this way, the positioning rib restricts the rotation of the second cover 16, thereby realizing the positioning of the second cover 16.

[0097] In one embodiment, the mounting portion of the outer casing 100 further includes a third cover 17, which has a first water inlet 120, a first water outlet 130, a second water inlet 140, and a second water outlet 150. The third cover 17 is used to close the opening of the outer casing 100.

[0098] In one embodiment, a sealing ring is provided between the water stop valve 14 and each water inlet and outlet;

[0099] And / or, a sealing ring is provided between the first filter material end cap 11 and the mounting portion of the housing 100;

[0100] And / or, a sealing ring is provided between the end of the first support member 220 near the first water inlet 120 and the mounting portion of the housing 100. This arrangement, with the sealing rings between the various assembly gaps, ensures that the filter element assembly 10 has a good sealing effect, preventing water leakage from the receiving cavity 110.

[0101] In one embodiment, the filter cartridge assembly 10 further includes a handle 18 rotatably connected to a second cover 16, the second cover 16 having a clearance groove for placing the handle 18. This configuration allows maintenance personnel to lift or lower the entire filter cartridge assembly 10 via the handle 18 when it needs to be installed or removed from the water purification device, thus improving the applicability of the filter cartridge assembly 10.

[0102] The present invention also proposes a water purification device, which includes a main body and a filter element assembly 10. The specific structure of the filter element assembly 10 is as described in the above embodiments. Since this water purification device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The filter element assembly 10 is disposed in the main body.

[0103] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A filter element assembly, characterized in that, include: The outer shell has a receiving cavity, and one end of the outer shell is provided with a mounting part, the mounting part having a first water inlet, a first water outlet, a second water inlet and a second water outlet communicating with the receiving cavity; A support assembly is disposed within the receiving cavity and abuts against and seals against the inner wall of the outer shell, thereby dividing the inner wall of the outer shell into at least a first inner wall and a second inner wall. A first chamber is formed between the support assembly and the first inner wall of the outer shell, and a second chamber is formed between the support assembly and the second inner wall of the outer shell. The first chamber and the second chamber are not in communication with each other. The first water inlet and the first water outlet are in communication with the first chamber, and the second water inlet and the second water outlet are in communication with the second chamber. A first filter element, disposed within the first chamber and having a hollow structure; and The second filter element is disposed in the second chamber and has a hollow structure; The support assembly includes a first support member and a second support member. The outer peripheral wall of the first support member is provided with an annular groove for the sealing member to be engaged. The outer peripheral wall of the first support member is sealed by the sealing member against the inner peripheral wall of the outer shell. The first water inlet, the first inner wall, and the second inner wall are arranged sequentially along the axial direction of the outer shell. The second support member has a first pipe section and a second pipe section. The first pipe section is disposed inside the first support member, and the second pipe section is disposed inside the second filter element. A portion of a third flow channel is formed inside the support assembly. Another portion of the third flow channel is formed between the second filter element and the second inner wall of the outer shell. The first pipe section and the second pipe section are connected to form a fourth flow channel. The fourth flow channel is connected to another portion of the third flow channel through the second filter element. The outer peripheral wall of the second pipe section is provided with a liquid passage that communicates with the fourth flow channel. The first support member has a first groove and a first mounting groove for installing the first filter element at the end away from the first water inlet. The first groove is provided with a plurality of support plates, which are arranged circumferentially around the first pipe section to form a plurality of liquid passages. The liquid passages are connected to another part of the third flow channel. The support plates protrude out of the first groove and abut against the second support member.

2. The filter element assembly as described in claim 1, characterized in that, A first flow channel is formed between the first filter element and the first inner wall, and a second flow channel is formed between the first filter element and the support assembly. The first flow channel and the second flow channel are connected through the first filter element.

3. The filter element assembly as described in claim 1, characterized in that, The first filter element is sleeved on the first support element, and the outer peripheral wall of the first support element near the second filter element is sealed to the inner peripheral wall of the outer shell by a sealing element.

4. The filter element assembly as described in claim 2, characterized in that, The second flow channel is formed between the first filter element and the first support element, and a portion of the third flow channel is formed between the first support element and the first pipe segment.

5. The filter element assembly as described in claim 1, characterized in that, The maximum inner diameter of the first pipe section is D1, and D1 satisfies: 8mm≤D1≤16mm; And / or, the second support member further has a third pipe section connecting the first pipe section and the second outlet, the outer diameter of the first pipe section is D2, the outer diameter of the third pipe section is D3, the D2 is greater than the D3, and the difference between the D2 and the D3 is not less than 1 mm.

6. The filter element assembly as claimed in claim 1, characterized in that, The inner peripheral wall of the outer shell is provided with a support platform, and the end of the first support member away from the first water inlet is supported on the support platform. The first filter member is disposed between the support platform and the first water inlet. Alternatively, the support assembly may further include a third support member arranged in a ring, the third support member being sleeved outside the second filter member and abutting against and supporting the outer shell, and the bottom end of the first support member abutting against and supporting the third support member.

7. The filter element assembly as claimed in claim 1, characterized in that, The bottom end of the first support member abuts against and is supported on the second support member, and a liquid passage is formed between the bottom end of the first support member and the second support member, which communicates with another part of the third flow channel. The second support member abuts against and supports the outer shell; Alternatively, the second filter element may have a second filter material end cap at the end away from the first filter element. The second filter material end cap abuts and is supported on the housing. A second mounting groove for installing the second filter element is formed on the second filter material end cap. The second support member abuts and is supported on the second filter material end cap.

8. A water purification device, characterized in that, It includes a body and a filter element assembly as described in any one of claims 1 to 7, wherein the filter element assembly is disposed within the body.

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