Water purification assembly and water purification equipment

Abstract

The utility model relates to the technical field of water purification, and provides a water purification assembly and water purification equipment, the water purification assembly comprises a shell and a filter element assembly, a water outlet space and a containing space which are isolated from each other are formed between the first end of the filter element assembly and the inner wall of the first end of the shell, and the second end of the filter element assembly abuts against the inner wall of the second end of the shell. Due to the fact that the positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element are arranged in the containing space, and the water outlet of the capacitive deionization filter element is arranged in the water outlet space, the design is based on the water outlet space and the containing space which are isolated from each other, water and electricity isolation of the water purification assembly is achieved, and the reliability of water purification work of the water purification assembly is ensured; moreover, the front filter element and the capacitive deionization filter element are integrated into a whole to form the composite filter element, and the composite filter element occupies a small space, so that the waterway structure of the existing water purification assembly is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purification component and a water purification device. Background Art

[0002] Capacitive Deionization (CDI) is a water desalination and purification technology based on the theory of electric double layer capacitance. Its basic principle is that after applying a low voltage to the electrodes, cations, anions or charged particles in the solution migrate to the two electrodes respectively under the action of electric field force and concentration gradient, and adsorb on the electrode surface to form an electric double layer, so as to achieve the purpose of desalination or purification. The capacitive deionization technology can achieve different water outlet qualities at different voltages, while retaining the ions beneficial to the human body and removing heavy metal ions. In related technologies, the capacitive deionization filter element is usually combined with other filter elements for physical filtration to ensure the water purification effect. However, since each filter element is used independently, the water purification component formed by this combination not only has a complex water circuit and is difficult to ensure the water purification effect, but also occupies a large space, which is not conducive to application on water purification devices. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the related technologies. For this purpose, the utility model provides a water purification component, which integrates a pre-filter element and a capacitive deionization filter element, occupies a small space, simplifies the water circuit structure of the existing water purification component, and is convenient for application on water purification devices.

[0004] The utility model also provides a water purification device.

[0005] The water purification component according to the first aspect embodiment of the utility model includes:

[0006] A housing;

[0007] A filter element assembly disposed in the housing. A mutually isolated water outlet space and a receiving space are formed between the first end of the filter element assembly and the inner wall of the housing, and the receiving space is located outside the water outlet space; the filter element assembly includes a core body, the core body includes a pre-filter element and a capacitive deionization filter element, the pre-filter element is sleeved outside the capacitive deionization filter element, a gap is left between the outer side surface of the core body and the inner wall of the housing, and the capacitive deionization filter element has a water outlet along its axial direction;

[0008] Wherein, the housing is provided with a water outlet port communicating with the water outlet space and a water inlet port communicating with the gap. The water outlet port and the water inlet port are located on the same side of the housing. The water outlet is communicated with the water outlet space. The positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element are both arranged in the accommodation space. The positive electrode conductor and the negative electrode conductor are arranged at intervals and are adapted to be connected to an external power supply.

[0009] According to an embodiment of the present invention, the housing is provided with a first through hole and a second through hole communicating with the accommodation space. The first through hole, the second through hole, the water outlet port and the water inlet port are located on the same side of the housing. The positive electrode conductor sequentially passes through the accommodation space and the first through hole, and the negative electrode conductor sequentially passes through the accommodation space and the second through hole.

[0010] According to an embodiment of the present invention, a positioning structure is provided between the inner wall of the housing and the outer side surface of the filter element assembly.

[0011] According to an embodiment of the present invention, the inner wall of the housing is provided with a first partition and a second partition. The second partition is located outside the first partition. The first partition and the first end of the filter element assembly enclose the water outlet space, and the first partition, the second partition and the first end of the filter element assembly enclose the accommodation space.

[0012] According to an embodiment of the present invention, the filter element assembly further includes a first end cap. The first end cap includes a side wall, a top wall and a first rubber blocking wall which are sequentially bent and connected. The side wall is connected to the inner side surface of the second partition. The top wall is clamped between the first end of the core body and the second partition. The first rubber blocking wall is connected to the outer side surface of the core body. The positive electrode conductor and the negative electrode conductor are located in the area enclosed by the side wall and the first partition.

[0013] According to an embodiment of the present invention, the filter element assembly further includes a fixing seat. The fixing seat is detachably arranged on the side wall. The fixing seat is provided with a first positioning hole adapted to the positive electrode conductor and a second positioning hole adapted to the negative electrode conductor. The positive electrode conductor is inserted into the first positioning hole, and the negative electrode conductor is inserted into the second positioning hole.

[0014] According to an embodiment of the present invention, a clamping groove is arranged on one side of the fixing seat facing the top wall, and a clamping buckle is arranged on the inner side surface of the side wall. The fixing seat and the first end cap are in circumferential limit fit through the clamping groove and the clamping buckle.

[0015] According to an embodiment of the present utility model, each of the positive electrode conductor and the negative electrode conductor includes an electrical connection member and an electrode tab connected to the capacitive deionization filter element, the electrode tab is detachably and electrically connected to the electrical connection member, and the electrical connection member sequentially passes through the corresponding positioning holes.

[0016] According to an embodiment of the present utility model, the filter element assembly further includes a second end cap, the second end cap includes a bottom wall and a second rubber blocking wall bent and connected to the bottom wall, the bottom wall is hermetically connected to the second end of the core body through a filling adhesive, and the inner side surface of the second rubber blocking wall is connected to the outer side surface of the core body.

[0017] According to an embodiment of the present utility model, the capacitive deionization filter element includes: a water outlet pipe and an electrode assembly;

[0018] The electrode assembly is wound around the peripheral wall of the water outlet pipe, and the inner wall of the pre-filter element is attached to the peripheral wall of the electrode assembly; the water outlet pipe has a water outlet channel and water passing holes communicating with the water outlet channel, the water outlet is formed in the water outlet channel, and the water passing holes are provided on the peripheral wall of the water outlet pipe.

[0019] According to an embodiment of the present utility model, the water outlet is provided at the first end of the water outlet pipe, the water passing holes are provided on the peripheral wall near the second end of the water outlet pipe, and a diversion groove is provided on the peripheral wall of the water outlet pipe, and a fluid communication is formed between the diversion groove and the water passing holes.

[0020] According to an embodiment of the present utility model, the electrode assembly includes: an insulating sheet and at least two layers of electrode sheets, the insulating sheet and the electrode sheets are arranged in a laminated manner, and the insulating sheet is clamped between two adjacent layers of the electrode sheets;

[0021] The electrode sheet includes a current collector layer and an adsorption layer, and the adsorption layers are provided on both the front and back sides of the current collector layer; two adjacent layers of the electrode sheets are respectively configured as a positive electrode sheet and a negative electrode sheet, the current collector layer of the positive electrode sheet is connected to the positive electrode conductor, the current collector layer of the negative electrode sheet is connected to the negative electrode conductor, and a water passing channel for accommodating the insulating sheet is formed between the positive electrode sheet and the negative electrode sheet;

[0022] The inner and outer ends of the electrode assembly with respect to the water outlet pipe are correspondingly formed as a water outlet end and a water inlet end; the water inlet end is communicated with the water outlet end through the water passing channel, and the water outlet end extends to the peripheral wall of the water outlet pipe and forms a fluid communication with the water passing holes.

[0023] According to an embodiment of the present utility model, the pre-filter element and the capacitive deionization filter element are coaxially arranged; and / or,

[0024] The pre-filter element includes any one of a PP cotton filter element, a carbon rod filter element, or a carbon fiber filter element. Alternatively, the pre-filter element includes multiple filter elements, and the multiple filter elements are sleeved together in sequence from the inside out, and each layer of the filter element includes any one of a PP cotton filter element, a carbon rod filter element, or a carbon fiber filter element.

[0025] The water purification device according to the second aspect embodiment of the present invention includes: a machine body and the water purification assembly as described above; the machine body has an installation cavity, and the water purification assembly is detachably disposed in the installation cavity.

[0026] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0027] An isolated water outlet space and accommodation space are formed between the first end of the filter element assembly and the inner wall of the first end of the housing, and the second end of the filter element assembly abuts against the inner wall of the second end of the housing. Since the positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element are disposed in the accommodation space, and the water outlet of the capacitive deionization filter element is disposed in the water outlet space, this design realizes the electrical and water isolation of the water purification assembly based on the mutually isolated water outlet space and accommodation space, ensuring the reliability of the water purification work of the water purification assembly; and, by integrating the pre-filter element and the capacitive deionization filter element into one to form a composite filter element, this composite filter element occupies a small space and simplifies the water path structure of the existing water purification assembly.

[0028] Some of the additional aspects and advantages of the present invention will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is one of the structural schematic diagrams of the water purification assembly provided by the embodiment of the present invention.

[0031] Figure 2 It is the second structural schematic diagram of the water purification assembly provided by the embodiment of the present invention.

[0032] Figure 3 It is the third structural schematic diagram of the water purification assembly provided by the embodiment of the present invention.

[0033] Figure 4 It is the structural schematic diagram of the capacitive deionization filter element provided by the embodiment of the present invention.

[0034] Figure 5 It is one of the schematic structural diagrams of the water outlet pipe provided by the embodiment of the present utility model.

[0035] Figure 6 It is the second of the schematic structural diagrams of the water outlet pipe provided by the embodiment of the present utility model.

[0036] Figure 7 It is the schematic structural diagram of winding the electrode assembly on the water outlet pipe provided by the embodiment of the present utility model.

[0037] Figure 8 It is the schematic structural diagram of the first end cover provided by the embodiment of the present utility model.

[0038] Figure 9 It is the schematic structural diagram of the annular fixing seat provided by the embodiment of the present utility model.

[0039] Figure 10 It is the schematic structural diagram of the second end cover provided by the embodiment of the present utility model.

[0040] Figure 11 It is the schematic structural diagram of the filter element assembly provided by the embodiment of the present utility model.

[0041] Figure 12 is Figure 2 the partial schematic diagram of.

[0042] Figure 13 It is the schematic cross-sectional view of the laminated arrangement of the electrode assembly provided by the embodiment of the present utility model.

[0043] Figure 14 It is the schematic cross-sectional view of the electrode plate provided by the embodiment of the present utility model.

[0044] Reference numerals:

[0045] 1. Housing; 11. Protrusion; 101. Water inlet port; 102. Water outlet port; 103. First through hole; 104. Second through hole; 111. Water outlet space; 112. Accommodation space; 121. First partition; 122. Second partition;

[0046] 2. Filter element assembly; 20. Capacitive deionization filter element; 21. Water outlet pipe; 22. Electrode assembly; 23. Pre-filter; 211. Water outlet channel; 212. Water passing hole; 213. Water outlet; 214. Flow guiding groove; 221. Insulating sheet; 222. Electrode plate; 2201. Water passing channel; 2221. Current collector layer; 2222. Adsorption layer; 201. Positive electrode tab; 202. Negative electrode tab;

[0047] 3. First end cover; 31. Side wall; 311. Buckle; 32. Top wall; 321. Rubber baffle; 33. First rubber baffle wall; 331. Groove; 332. Contact portion;

[0048] 4. Second end cover; 41. Bottom wall; 42. Second rubber baffle wall;

[0049] 5. Power connection component; 51. Positive electrode electrical connector; 52. Negative electrode electrical connector;

[0050] 6. Ring-shaped fixing seat; 61. Top plate; 611. First positioning hole; 62. Side plate; 621. Card slot. Detailed implementation manner

[0051] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0052] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present utility model, unless otherwise specified, the meanings of "multiple", "multiple roots", "multiple groups" are two or more.

[0053] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0054] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] The following Figures 1 to 14 is combined with specific embodiments and their application scenarios to provide a detailed description of the water purification component and water purification device provided by the embodiments of the present utility model.

[0057] In the first aspect, as Figure 1 and Figure 2 shown, the water purification component of the embodiments of the present utility model includes: a housing 1 and a filter element assembly 2.

[0058] The filter element assembly 2 is disposed in the housing 1. There are mutually isolated water outlet spaces 111 and accommodation spaces 112 formed between the first end of the filter element assembly 2 and the inner wall of the housing 1. The accommodation space 112 is located outside the water outlet space 111. The filter element assembly 2 includes a core body. The core body includes a pre-filter 23 and a capacitive deionization filter element 20. The pre-filter 23 is sleeved outside the capacitive deionization filter element 20. There is a gap between the outer side surface of the core body and the inner wall of the housing 1. The capacitive deionization filter element 20 has a water outlet 213 along its axial direction;

[0059] Among them, the housing 1 is provided with a water outlet port 102 communicating with the water outlet space 111 and a water inlet port 101 communicating with the gap. The water outlet port 102 and the water inlet port 101 are located on the same side of the housing 1. The water outlet 213 communicates with the water outlet space 111. Both the positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element 20 are arranged in the accommodation space 112. The positive electrode conductor and the negative electrode conductor are arranged at intervals and are adapted to be connected to an external power supply.

[0060] It can be understood that the housing 1 is columnar. An accommodation cavity is provided inside the housing 1. The filter element assembly 2 is installed in the accommodation cavity and is configured to be coaxially arranged with the housing 1. The water inlet port 101 and the water outlet port 102 are respectively located at the first end of the housing 1 and communicate with the accommodation cavity.

[0061] It should be noted that the pre-filter 23 is used for physically filtering impurities in the water body. The pre-filter 23 is cylindrical. According to the material selected for the pre-filter 23, the pre-filter 23 can be any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element. Or, the pre-filter 23 includes multiple layers of filter elements, and the multiple layers of filter elements are sleeved together in sequence from the inside to the outside. Each layer of filter element includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element.

[0062] Among them, the capacitive deionization filter element 20 is columnar. When the pre-filter 23 is sleeved outside the capacitive deionization filter element 20, the pre-filter 23 and the capacitive deionization filter element 20 can be configured to be coaxial or non-coaxial, and no specific limitation is made in this regard.

[0063] A mutually isolated water outlet space 111 and an accommodation space 112 are formed between the first end of the filter element assembly 2 and the inner wall of the first end of the housing 1. The second end of the filter element assembly 2 abuts against the inner wall of the second end of the housing 1. Since the positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element 20 are arranged in the accommodation space 112, and the water outlet 213 of the capacitive deionization filter element 20 is arranged in the water outlet space 111, this design realizes the electrical and water isolation of the water purification assembly based on the mutually isolated water outlet space 111 and accommodation space 112, ensuring the reliability of the water purification work of the water purification assembly. And, by integrating the pre-filter 23 and the capacitive deionization filter element 20 into one to form a composite filter element, this composite filter element occupies a small space and simplifies the water circuit structure of the existing water purification assembly.

[0064] Such as Figure 1 、 Figure 8 、 Figure 9 and Figure 11As shown, the housing 1 is provided with a first through-hole 103 and a second through-hole 104 that communicate with the accommodation space 112. The first through-hole 103, the second through-hole 104, the water outlet port 102, and the water inlet port 101 are located on the same side of the housing 1. Among them, the first through-hole 103 corresponds to the positive electrode conductor, and the second through-hole 104 corresponds to the negative electrode conductor. Exemplarily, the positive electrode conductor can pass through the first through-hole 103, and the negative electrode conductor can pass through the second through-hole 104. In this way, the positive electrode tab 201 and the negative electrode tab 202 can be externally connected to a power source.

[0065] As Figure 8 and Figure 12 shown, a positioning structure is provided between the inner wall of the housing 1 and the outer side surface of the filter element assembly 2. Among them, the positioning structure includes a groove 331 and a protrusion 11. In this way, when assembling the filter element assembly 2 and the housing 1, the docking accuracy between the positive electrode electrical connector 51 and the first through-hole 103, and the docking accuracy between the negative electrode electrical connector 52 and the second through-hole 104 can be ensured.

[0066] In some embodiments, as Figure 2 and Figure 3 shown, the inner wall of the housing 1 is provided with a first partition 121 and a second partition 122. The second partition 122 is located outside the first partition 121. A water outlet space 111 is formed by enclosing the first end of the first partition 121 and the filter element assembly 2. An accommodation space 112 is formed by enclosing the first partition 121, the second partition 122, and the first end of the filter element assembly 2.

[0067] It can be understood that the first partition 121 and the second partition 122 are respectively provided on the inner wall of the first end of the housing 1, the water outlet port 102 is provided at the center of the first end of the housing 1, and the first partition 121 and the second partition 122 respectively extend circumferentially around the water outlet port 102 in a ring shape. Since the second partition 122 is located outside the first partition 121, the accommodation space 112 is located outside the water outlet space 111.

[0068] In practical applications, just by abutting the first end of the filter element assembly 2 against the inner wall of the first end of the housing 1, the water outlet space 111 and the accommodation space 112 can be formed between the first end of the filter element assembly 2 and the first end of the housing 1 based on the first partition 121 and the second partition 122.

[0069] In some embodiments, as Figure 2 , Figure 3 , Figure 8 and Figure 11 shown, the filter element assembly 2 further includes: a first end cap 3;

[0070] The first end cap 3 includes a side wall 31 and a top wall 32 which are bent and connected. The side wall 31 is sealingly connected to the inner side surface of the second partition plate 122, and the top wall 32 is sealingly connected to the first end of the core body. The top wall 32 is clamped between the first end of the core body and the second partition plate 122.

[0071] Wherein, the positive electrode electrical connector 51 and the negative electrode electrical connector 52 are located in the area enclosed by the side wall 31 and the first partition plate 121.

[0072] It can be understood that the top wall 32 is disc-shaped, the top wall 32 is provided with a central hole, the central hole is coaxially arranged with the water outlet port 102, the side wall 31 extends circumferentially with respect to the central hole, and the positive electrode tab 201, the negative electrode tab 202 and the water outlet 213 of the capacitive deionization filter element 20 pass through the central hole.

[0073] When the first end of the core body abuts against the inner wall of the first end of the housing 1, the outer side surface of the side wall 31 is sealingly connected to the inner side surface of the second partition plate 122, and a closed accommodation space 112 is formed between the side wall 31, the first partition plate 121 and the first end of the positive electrode electrical connector 51, and waterproof isolation of the positive electrode electrical connector 51 and the negative electrode electrical connector 52 can be achieved based on the accommodation space 112.

[0074] At the same time, the peripheral wall of the water outlet 213 and the inner side surface of the first partition plate 121 can also be configured to be sealingly connected. This design can ensure that the water body output from the water outlet 213 directly discharges from the water outlet port 102 after entering the water outlet space 111, and the water body in the water outlet space 111 will not flow into the accommodation space 112.

[0075] In some embodiments, as Figure 2 、 Figure 3 and Figure 8 shown, the first end cap 3 further includes: a first glue-blocking wall 33, the first glue-blocking wall 33 is bent and connected to the top wall 32, the top wall 32 and the first end of the core body are sealingly connected by filling glue, and the inner side surface of the first glue-blocking wall 33 fits against the peripheral wall of the core body;

[0076] Wherein, a water passing gap is left between the outer side surface of the first glue-blocking wall 33 and the inner wall of the housing 1, and the water inlet port 101 is communicated with the gap through the water passing gap.

[0077] It can be understood that the filling glue can be epoxy resin glue, and the filling glue forms a sealing glue layer at the first end of the core body. The first glue-blocking wall 33 is arranged on the outer edge of the top wall 32 and extends circumferentially with respect to the central hole, and the inner diameter of the first glue-blocking wall 33 is adapted to the diameter of the core body.

[0078] Optionally, in order to ensure the sealing effect on the first end of the core body, a first support rib is provided on one side of the top wall 32 facing the core body. The first support rib can be configured to extend radially along the water outlet pipe 21. The first support rib is used to ensure the thickness of the filling glue filled at the first end of the core body and is beneficial to ensuring the molding quality of the filling glue.

[0079] In an alternative embodiment, as Figure 12 shown, in order to ensure the molding quality of the filling glue, a glue blocking plate 321 is further provided on one side of the top wall 32 facing the core body and is disposed close to the side wall 31. That is to say, the glue blocking plate 321 is provided on the inner edge of the top wall 32 and extends circumferentially with respect to the central hole. The glue blocking plate 321 is used to restrict the flow of the filling glue towards the area where the central hole is located.

[0080] In an alternative embodiment, as Figure 8 and Figure 11 shown, a plurality of spaced-apart abutting portions 332 are provided on the outer side surface of the first glue blocking wall 33, and the abutting portions 332 abut against the inner wall of the housing 1.

[0081] In other words, bumps can be provided on the outer side surface of the first glue blocking wall 33, and the bumps abut against the inner wall of the housing 1 so as to form a water passing gap between the outer side surface of the first glue blocking wall 33 and the inner wall of the housing 1.

[0082] In some embodiments, as Figure 2 、 Figure 3 、 Figure 10 and Figure 11 shown, the filter element assembly 2 further includes: a second end cap 4;

[0083] The second end cap 4 includes a bottom wall 41 and a second glue blocking wall 42 which are bent and connected. The bottom wall 41 is hermetically connected to the second end of the core body through a filling glue, and the second glue blocking wall 42 is attached to the peripheral wall of the core body.

[0084] It can be understood that the bottom wall 41 is in a disc shape, the filling glue forms a sealing glue layer at the second end of the core body, and the bottom wall 41 is attached to the surface of the sealing glue layer to achieve the sealing of the second end of the core body.

[0085] The second glue blocking wall 42 is provided on the outer edge of the bottom wall 41 and extends circumferentially with respect to the center of the bottom wall 41. The inner diameter of the second glue blocking wall 42 is adapted to the diameter of the core body. The second glue blocking wall 42 is used to prevent the filling glue from overflowing to the peripheral wall of the core body.

[0086] Furthermore, a second support rib can also be provided on one side of the bottom wall 41 facing the core body. The second support rib can be configured to extend radially along the water outlet pipe 21. The second support rib is used to ensure the thickness of the filling glue filled at the second end of the core body and is beneficial to ensuring the molding quality of the filling glue.

[0087] AsFigure 11 As shown, the first end cap 3 and the second end cap 4 are used to integrate the pre-filter 23 and the capacitive deionization filter 20, which are separated from each other, into one body to form a composite filter. Moreover, the first end cap 3 and the second end cap 4 also seal both ends of the composite filter to ensure that the water body first passes through the pre-filter 23 radially, then receives the water body purified by the pre-filter 23 through the water passing gap, and then the water body in the water passing gap enters the capacitive deionization filter 20 from the side of the capacitive deionization filter 20, and the water body purified by the capacitive deionization filter 20 is discharged from the water outlet 213.

[0088] At the same time, the inner wall of the pre-filter 23 does not contact the peripheral wall of the capacitive deionization filter 20 to form a water passing gap between the opposite wall surfaces of the pre-filter 23 and the capacitive deionization filter 20. This design ensures the smoothness of the water path between the pre-filter 23 and the capacitive deionization filter 20. After the pre-filter 23 filters the water body, the pre-filter 23 can convey the treated water body to the peripheral wall of the capacitive deionization filter 20, and then the capacitive deionization filter 20 performs desalination treatment on the received water body. The gap width of the water passing gap can be specifically set to 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, etc.

[0089] In an optional embodiment, the filter element assembly 2 further includes an annular fixing seat 6. The annular fixing seat 6 is coaxially arranged on the side wall 31. The annular fixing seat 6 is located in the accommodating space 112. The annular fixing seat 6 is provided with a first positioning hole 611 corresponding to the positive electrode conductor and a second positioning hole corresponding to the negative electrode conductor.

[0090] Specifically, the annular fixing seat 6 is detachably arranged on the side wall 31. The annular fixing seat 6 includes a top plate 61 and a side plate 62 which are bent and connected. The top plate 61 abuts against the side of the side wall 31 away from the top wall 32. The top plate 61 is provided with the first positioning hole 611 and the second positioning hole. The side plate 62 abuts against the inner side surface of the side wall 31. Among them, the side plate 62 is provided with a clamping groove 621, and the inner side surface of the side wall 31 is provided with a clamping buckle 311. The annular fixing seat 6 and the first end cap 3 are limited and matched in the circumferential direction through the clamping groove 621 and the clamping buckle 311.

[0091] In an optional embodiment, each of the positive electrode conductor and the negative electrode conductor includes an electrical connection member and a tab connected to the capacitive deionization filter 20. The tab is detachably electrically connected to the electrical connection member, and the electrical connection member sequentially passes through the corresponding positioning holes.

[0092] Specifically, the power connection component 5 includes a positive electrode connection member 51 and a negative electrode connection member 52. The annular fixing base 6 is coaxially arranged on the side wall 31. The annular fixing base 6 is located in the accommodation space 112. The annular fixing base 6 is provided with a first positioning hole 611 corresponding to the positive electrode tab 201 and a second positioning hole corresponding to the negative electrode tab 202. The positive electrode connection member 51 is inserted through the first positioning hole 611 and is detachably connected to the positive electrode tab 201. The negative electrode connection member 52 is inserted through the second positioning hole and is detachably connected to the negative electrode tab 202. In addition, the positive electrode connection member 51 is sequentially inserted through the first positioning hole 611 and the first through hole 103, and the negative electrode connection member 52 is sequentially inserted through the second positioning hole and the second through hole 104.

[0093] In an optional embodiment, each of the first positioning hole 611 and the second positioning hole is a stepped hole. The stepped hole is provided with a stepped surface. The outer side surface of each of the positive electrode connection member 51 and the negative electrode connection member 52 is provided with an abutting surface, and the abutting surface abuts against the stepped surface.

[0094] In addition, each of the positive electrode connection member 51 and the negative electrode connection member 52 is provided with a slot, and the corresponding tab is inserted into the slot. For example, the bottom of the positive electrode connection member 51 is provided with a slot, and the positive electrode tab 201 can be inserted into the slot of the positive electrode connection member 51.

[0095] In practical applications, such as Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, first, a layer of filling glue is provided in the first region at the first end of the core body. The first region is disposed opposite to the top wall 32 along the axial direction of the housing 1. Then, the first end cap 3 is covered on the first end of the core body. Since the first glue-blocking wall 33 is attached to the peripheral wall of the core body and the first glue-blocking wall 33 extends circumferentially relative to the water outlet port 102, the first glue-blocking wall 33 can not only prevent the filling glue from overflowing to the side of the core body, but also limit the core body radially to ensure the coaxiality between the core body and the water outlet port 102. Next, a layer of filling glue is provided in the second region at the first end of the core body. The second region corresponds to the region where the central hole is located on the top wall 32, thereby completing the sealing of the first end of the core body. Subsequently, the annular fixing seat 6 is installed on the side wall 31. Under the limiting cooperation of the card slot 621 and the buckle 311, the first positioning hole 611 can correspond to the positive electrode tab 201, and the second positioning hole can correspond to the negative electrode tab 202. Then, the positive electrode electrical connector 51 is installed in the first positioning hole 611 and completes the plug-in cooperation with the positive electrode tab 201, and the negative electrode electrical connector 52 is installed in the second positioning hole and completes the plug-in cooperation with the negative electrode tab 202. That is to say, under the action of the annular fixing seat 6, the docking coaxiality between the electrical connector and the tab can be ensured, and it can be ensured that during the docking process of the electrical connector and the tab, the electrical connector will not move excessively so as not to damage the tab.

[0096] In an alternative embodiment, as Figure 8 and Figure 12 shown, the positioning structure includes a groove 331 and a protrusion 11. The protrusion 11 is provided on the inner wall of the housing 1, and the groove 331 extends from the outer side surface of the top wall 32 to the outer side surface of the first glue-blocking wall 33. Thus, when assembling the filter element assembly 2 and the housing 1, the docking accuracy between the positive electrode electrical connector 51 and the first through hole 103, and the docking accuracy between the negative electrode electrical connector 52 and the second through hole 104 can be ensured. Among them, after the filter element assembly 2 is assembled to the housing 1, the top plate 61 of the annular fixing seat 6 can be sleeved on the outer side surface of the first partition plate 121.

[0097] As Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 shown, the capacitive deionization filter element 20 includes a water outlet pipe 21 and an electrode assembly 22. The electrode assembly 22 is wound around the peripheral wall of the water outlet pipe 21. Both ends of the electrode assembly 22 along the axial direction of the water outlet pipe 21 are sealed. The outer side of the electrode assembly 22 is used to receive the input of raw water, and the inner side of the electrode assembly 22 is used to output purified water or wastewater;

[0098] The water outlet pipe 21 has a water outlet channel 211, a water hole 212 and a water outlet 213 communicated with the water outlet channel 211. The water outlet channel 211 is arranged in the water outlet pipe 21, the water outlet channel 211 is formed with the water outlet 213, and the water hole 212 is arranged on the peripheral wall of the water outlet pipe 21. Exemplarily, the water outlet 213 is arranged at the first end of the water outlet pipe 21, and the water hole 212 is arranged on the peripheral wall near the second end of the water outlet pipe 21.

[0099] It is understandable that the electrode assembly 22 generally includes positive and negative electrode sheets that are stacked, the positive and negative electrode sheets are isolated from each other, and a flow channel for water flow is formed between the positive and negative electrode sheets; when the electrode assembly 22 is wound, the inner side surface of one end of the electrode assembly 22 contacts the peripheral wall of the water outlet pipe 21, and then the electrode assembly 22 is wound layer by layer with the water outlet pipe 21 as the central axis until the electrode assembly 22 is wound in a columnar distribution.

[0100] Since the electrode assembly 22 is wound around the peripheral wall of the water outlet pipe 21 and the electrode assembly 22 is sealed at both ends along the axial direction of the water outlet pipe 21, when a positive voltage is applied to the positive electrode sheet and the negative electrode sheet, the cations, anions or charged particles in the water body will migrate to the surface of the positive electrode sheet and the negative electrode sheet under the action of the electric field force, so that the inner side of the electrode assembly 22 outputs the clean water after desalination treatment; when a reverse voltage is applied to the positive electrode sheet and the negative electrode sheet, or when the voltage is stopped, the anions, cations or charged particles adsorbed on the surface of the positive electrode sheet and the negative electrode sheet will automatically detach, so that the inner side of the electrode assembly 22 outputs wastewater with a higher concentration.

[0101] Considering that the surrounding wall of the existing water outlet pipe 21 is usually densely covered with multiple water holes 212, the water output from the inner side of the electrode assembly 22 will evenly pass through each water hole 212 and enter the water outlet channel 211. If bubbles appear in the electrode assembly 22, the bubbles may adhere to the surface of the positive electrode sheet and / or the negative electrode sheet, and the flowing water will not have an effect on the desorption of the bubbles. However, the present application arranges the water hole 212 on the peripheral wall near the second end of the water outlet pipe 21 so that the water hole 212 is arranged away from the water outlet 213. This design can limit the water output from the inner side of the electrode assembly 22 to gradually converge toward the area where the water hole 212 is located, and then be output in sequence through the water hole 212, the water outlet channel 211 and the water outlet 213. In the process of water flow, since the water hole 212 is arranged away from the water outlet 213, the flowing water will gradually converge toward the area where the water hole 212 is located. This will gradually squeeze the bubbles generated in the electrode assembly 22 to the area where the water hole 212 is located, and then enter the water outlet channel 211 from the water hole 212 and be discharged together with the water, thereby effectively removing the bubbles appearing in the capacitor deionization filter element 20.

[0102] As described above, in the process of desalination by the capacitive deionization filter element 20 of the present utility model, the air bubbles generated inside the filter element can be effectively discharged, which can prevent the capacitive deionization filter element 20 from generating noise during operation, ensure the stability of the internal electric field of the electrode assembly 22, and thus also ensure the water purification effect of the capacitive deionization filter element 20.

[0103] It should be noted here that as Figure 4 shown, the capacitive deionization filter element 20 further includes a protective sleeve. For example, the protective sleeve is a cylindrical rubber film. The protective sleeve is sleeved on the peripheral wall of the electrode assembly 22, and a plurality of water passing holes are formed on the protective sleeve to ensure that the water body can reach the outside of the electrode assembly 22 through the water passing holes, and then the electrode assembly 22 performs desalination treatment on the received water body.

[0104] In some embodiments, as Figure 2 、 Figure 5 and Figure 6 shown, a diversion groove 214 is provided on the peripheral wall of the water outlet pipe 21, and a fluid communication is formed between the diversion groove 214 and the water passing hole 212.

[0105] It can be understood that by providing the diversion groove 214 on the peripheral wall of the water outlet pipe 21, it is possible to avoid the gap between the inner side of the electrode assembly 22 and the peripheral wall of the water outlet pipe 21 from being too small and causing water flow restriction to the water body. Thus, it is convenient to collect the purified water output from the inner side of the electrode assembly 22 by using the diversion groove 214 and then divert the collected purified water into the water passing hole 212.

[0106] Among them, the depth of the diversion groove 214 can be set to 2 - 5 mm.

[0107] In some embodiments, as Figure 5 shown, since the length of the water outlet pipe 21 is substantially the same as the length of the electrode assembly 22 along the axial direction of the central axis, one end of the diversion groove 214 is provided on the peripheral wall near the first end of the water outlet pipe 21, and the other end is provided on the peripheral wall near the second end of the water outlet pipe 21. The diversion groove 214 can effectively collect the purified water output from the inner side of the electrode assembly 22 at various positions along the axial direction of the water outlet pipe 21, ensuring the diversion effect on the purified water.

[0108] Among them, the diversion groove 214 can be configured to be provided on the peripheral wall of the water outlet pipe 21 along a spiral track or along a straight track, and no specific limitation is made thereto.

[0109] In some embodiments, as Figure 5 shown, the diversion groove 214 is configured to extend along the axial direction of the water outlet pipe 21. This design can effectively reduce the diversion path of the purified water and is also convenient for processing the diversion groove 214.

[0110] Meanwhile, since the inner and outer ends of the electrode assembly 22 correspond to the water outlet end and the water inlet end with respect to the water outlet pipe 21, and the electrode assembly 22 is configured to be wound around the circumferential wall of the water outlet pipe 21, the water outlet end of the electrode assembly 22 extends along the axial direction of the water outlet pipe 21. By arranging the diversion groove 214 to extend along the axial direction of the water outlet pipe 21, it is convenient to relatively arrange the diversion groove 214 with the water outlet end of the electrode assembly 22, ensuring the water diversion effect on the purified water.

[0111] In some embodiments, as Figure 6 shown, in order to enhance the water diversion effect on the purified water, a plurality of diversion grooves 214 and a plurality of water passing holes 212 are provided. The plurality of diversion grooves 214 and the plurality of water passing holes 212 are arranged opposite to each other, and at least a part of the plurality of water passing holes 212 are arranged along the circumferential direction of the water outlet pipe 21.

[0112] Optionally, each diversion groove 214 can be configured to form a fluid communication with a plurality of water passing holes 212 arranged along the axial direction of the water outlet pipe 21, and each diversion groove 214 extends along the axial direction of the water outlet pipe 21.

[0113] Optionally, the plurality of diversion grooves 214 and the plurality of water passing holes 212 are arranged in a one-to-one correspondence. The plurality of water passing holes 212 are arranged along the circumferential direction of the water outlet pipe 21, and the plurality of diversion grooves 214 are also arranged along the circumferential direction of the water outlet pipe 21. Each diversion groove 214 extends along the axial direction of the water outlet pipe 21.

[0114] In some embodiments, a plurality of water passing holes 212 are provided, and the sum of the water passing areas of the plurality of water passing holes 212 is not less than 20 mm². For example, the sum of the water passing areas of the plurality of water passing holes 212 is 20 mm², 25 mm², 35 mm², 50 mm², etc. This design avoids a large flow resistance when the water body passes through the water passing holes 212 and prevents the water passing holes 212 from restricting the flow of the water body.

[0115] In some embodiments, in order to ensure the exhaust effect on the capacitive deionization filter element 20, the ratio of the axial distance between the water passing holes 212 and the second end of the water outlet pipe 21 to the length of the water outlet pipe 21 is not greater than 15%.

[0116] Optionally, the length of the capacitive deionization filter element 20 is approximately 333 - 350 mm, and the axial distance between the water passing holes 212 and the second end of the water outlet pipe 21 can be set to be less than 50 mm, so that the water passing holes 212 are as far as possible from the water outlet 213 of the capacitive deionization filter element 20, thereby ensuring the exhaust effect.

[0117] In some embodiments, as Figure 7 , Figure 13 and Figure 14As shown, the electrode assembly 22 includes: an insulating sheet 221 and at least two layers of electrode sheets 222. The insulating sheet 221 and the electrode sheets 222 are arranged in a stacked manner, and the insulating sheet 221 is sandwiched between two adjacent layers of electrode sheets 222;

[0118] The electrode sheet 222 includes a current collector layer 2221 and an adsorption layer 2222. The adsorption layers 2222 are provided on both the front and back sides of the current collector layer 2221; two adjacent electrode sheets 222 are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passage 2201 for accommodating the insulating sheet 221 is formed between the positive electrode sheet and the negative electrode sheet;

[0119] The inner and outer ends of the electrode assembly 22 correspond to the inner and outer ends of the water outlet pipe 21 to form a water outlet end and a water inlet end; the water inlet end is communicated with the water outlet end through the water passage 2201, and the water outlet end extends towards the peripheral wall of the water outlet pipe 21 and forms a fluid connection with the water passage hole 212.

[0120] It can be understood that the insulating sheet 221 and the electrode sheets 222 are stacked in an alternating arrangement to sandwich the insulating sheet 221 between two adjacent layers of electrode sheets 222. Since two adjacent electrode sheets 222 are respectively configured as a positive electrode sheet and a negative electrode sheet, when the number of electrode sheets 222 is greater than two, in order to meet the water filtration requirement of the electrode assembly 22 for raw water, when designing the power supply for the electrode assembly 22, the positive electrode sheet and the negative electrode sheet can be alternately arranged in sequence according to the stacking direction, the insulating sheet 221 is sandwiched between the positive electrode sheet and the negative electrode sheet, and the current collector layer 2221 of the positive electrode sheet is electrically connected to the positive electrode of the power supply, and the current collector layer 2221 of the negative electrode sheet is electrically connected to the negative electrode of the power supply. When the number of electrode sheets 222 is equal to two, the insulating sheet 221 can be directly sandwiched between the positive electrode sheet and the negative electrode sheet.

[0121] For the electrode sheet 222, the current collector layer 2221 of the electrode sheet 222 can be made of a metal or graphite material so that the current collector layer 2221 forms a conductive layer, and the adsorption layer 2222 of the electrode sheet 222 can be made of activated carbon and other adsorption materials to adsorb ions in the raw water.

[0122] At the same time, the insulating sheet 221 can be made of a plastic material. The insulating sheet 221 is used to support between the positive electrode sheet and the negative electrode sheet, not only preventing the short circuit connection between the positive electrode sheet and the negative electrode sheet, but also ensuring the formation of the water passage 2201 between the positive electrode sheet and the negative electrode sheet.

[0123] In practical applications, the work of the capacitor deionization filter element 20 includes an adsorption purification process and a desorption regeneration process. When the two adjacent layers of electrode sheets 222 are electrically connected to the positive and negative electrodes of the power supply and the power supply is started, the anions and cations in the raw water are attracted to the electrode sheets 222 with opposite charges and adsorbed by the adsorption layer 2222 on the electrode sheets 222. This working process of the capacitor deionization filter element 20 is an adsorption purification process.

[0124] Accordingly, when the power supply is stopped or a reverse voltage is applied to two adjacent electrode sheets 222, the ions adsorbed by the adsorption layer 2222 are released into the water in the water channel 2201. At this time, the water channel 2201 outputs concentrated water with a higher ion concentration.

[0125] As can be seen from the above, the capacitor deionization filter element 20 shown in this embodiment realizes the integrated design of the electrode sheet 222 by setting the adsorption layer 2222 on the front and back sides of the current collector layer 2221. The electrode assembly 22 can be formed by stacking the electrode sheet 222 and the insulating sheet 221 in an alternating arrangement. This stacking arrangement design of the electrode assembly 22 simplifies the arrangement structure of the electrode assembly 22, facilitates processing and production, and helps to reduce production costs.

[0126] At the same time, in practical applications, only two adjacent layers of electrode sheets 222 need to be electrically connected to the positive and negative electrodes of the power supply to adsorb the ions in the raw water passing through the water passage 2201, thereby achieving the purpose of purifying the raw water; since both sides of the current collector layer 2221 of each electrode sheet 222 are provided with adsorption layers 2222, both sides of each electrode sheet 222 can achieve ion adsorption, thereby ensuring the purification effect of the raw water to a certain extent. The capacitor deionization filter element 20 can effectively remove heavy metal ions in water, retain the beneficial ions required by the human body, and meet the needs of household water purification.

[0127] In some embodiments, in order to ensure the purification effect of raw water, two adjacent layers of electrode sheets 222 are arranged relative to each other along the stacking direction to ensure the coverage of the electric field between the two adjacent layers of electrode sheets 222 as much as possible, and then remove anions, cations and other charged particles in the raw water based on the electric field between the two adjacent layers of electrode sheets 222.

[0128] Further, by arranging the insulating sheet 221 and the electrode sheet 222 to be offset in the stacking direction, the electrode sheet 222 is hidden between two adjacent insulating sheets 221. This design ensures electrical isolation between two adjacent electrode sheets 222 while facilitating the arrangement of the water outlet end of the electrode assembly 22 at a position opposite to the water passing holes 212 and / or the diversion grooves 214 on the peripheral wall of the water outlet pipe 21, so as to ensure the fluid communication between the water passing channel 2201 in the electrode assembly 22 and the water outlet channel 211 in the water outlet pipe 21. Herein, the stacking direction is the thickness direction of the insulating sheet 221 or the electrode sheet 222.

[0129] In some embodiments, a plurality of groups of water passing holes 212 are provided on the peripheral wall of the water outlet pipe 21 in the circumferential direction. For example, the plurality of groups of water passing holes 212 are uniformly arranged in the circumferential direction of the water outlet pipe 21; each group of water passing holes 212 is arranged in the axial direction of the water outlet pipe 21; the number of the electrode sheets 222 is greater than two, so that the electrode assembly 22 forms a plurality of water passing channels 2201, the inner ends of the electrode assembly 22 form a plurality of water outlet ends corresponding to the plurality of water passing channels 2201, and the plurality of water outlet ends are arranged opposite to the plurality of groups of water passing holes 212.

[0130] It can be understood that by setting the number of the electrode sheets 222 to be greater than two, based on the plurality of water passing channels 2201 formed by the electrode assembly 22, the raw water flowing in multiple paths in the capacitive deionization filter element 20 can be purified simultaneously, improving the purification efficiency of the raw water.

[0131] Meanwhile, by arranging the plurality of water outlet ends opposite to the plurality of groups of water passing holes 212, the smoothness of the water path between each water passing channel 2201 and the water outlet channel 211 in the water outlet pipe 21 can be ensured, which is conducive to ensuring the purified water outlet flow rate of the capacitive deionization filter element 20.

[0132] In some embodiments, as Figure 2 、 Figure 4 and Figure 7 shown, in order to facilitate the connection of two adjacent electrode sheets 222 to the positive and negative electrodes of the power supply, the electrode assembly 22 further includes: a positive electrode tab 201 and a negative electrode tab 202; the positive electrode tab 201 is electrically connected to the current collector layer 2221 of the positive electrode sheet; the negative electrode tab 202 is electrically connected to the current collector layer 2221 of the negative electrode sheet.

[0133] Specifically, a first extension portion is provided on one side edge of the current collector layer 2221 of each positive electrode sheet, and a second extension portion is provided on one side edge of the current collector layer 2221 of each negative electrode sheet; when the electrode assembly 22 is wound around the peripheral wall of the water outlet pipe 21, the first extension portions of the respective positive electrode sheets are stacked to form the positive electrode tab 201, and the second extension portions of the respective negative electrode sheets are stacked to form the negative electrode tab 202.

[0134] In some embodiments, the current collector layer 2221 includes any one of copper foil, titanium foil, and graphite paper, and the current collector layer 2221 is configured to be electrically connected to the positive or negative electrode of a power source.

[0135] The adsorption layer 2222 adheres to the surface of the current collector layer 2221. The adsorption layer 2222 includes an activated carbon layer, and the activated carbon layer has excellent adsorption performance and can adsorb ions in raw water.

[0136] In some embodiments, since the thickness of the current collector layer 2221 of the electrode sheet 222 determines the support strength, winding difficulty, and cost of the electrode sheet 222, if the current collector layer 2221 is too thin, the current collector layer 2221 is prone to damage. If the current collector layer 2221 is too thick, the cost of the electrode sheet 222 is too high. Therefore, the thickness of the current collector layer 2221 is set to 15 - 50 microns; optionally, the thickness of the current collector layer 2221 is specifically 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, etc.

[0137] At the same time, since the thickness of the adsorption layer 2222 of the electrode sheet 222 determines the adsorption capacity and adsorption rate, however, if the adsorption layer 2222 is too thick, the adsorption layer 2222 will crack during winding. Therefore, the thickness of the adsorption layer 2222 is set to 25 - 200 microns; optionally, the thickness of the adsorption layer 2222 is specifically 25 microns, 30 microns, 50 microns, 65 microns, 100 microns, 150 microns, 185 microns, 200 microns, etc.

[0138] In some embodiments, the insulating sheet 221 can be configured as a porous structure. For example, the insulating sheet 221 includes insulating woven fabric or insulating grid. The insulating woven fabric can be woven fabric or melt - blown fabric.

[0139] Thus, although the insulating sheet 221 is disposed in the water passage 2201, since the insulating sheet 221 is a porous structure, the insulating sheet 221 does not affect the migration of ions between two adjacent electrode sheets 222, and thus does not affect the adsorption of ions in the water body by the adsorption layer 2222 of the electrode sheet 222. The insulating sheet 221 ensures the uniform flow of water in the water passage 2201 and can, to a certain extent, ensure the adsorption effect of the adsorption layer 2222 on ions.

[0140] In some embodiments, considering that the greater the thickness of the insulating sheet 221, the smaller the water flow pressure loss and the lower the blockage risk. However, the greater the thickness of the insulating sheet 221, the greater the distance between two adjacent electrode sheets 222, resulting in a greater resistance between two adjacent electrode sheets 222 and poorer water purification performance. Therefore, in order to comprehensively consider the pressure loss and water purification effect, the thickness of the insulating sheet 221 is set to 0.1 - 1.0 mm; optionally, the thickness of the insulating sheet 221 is specifically set to 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc.

[0141] In an alternative embodiment, as Figure 3 shown, the end of the water outlet pipe 21 provided with the water outlet 213 extends into the water outlet space 111, and the outer side surface of the water outlet pipe 21 is sealingly connected to the inner wall of the water outlet space 111.

[0142] In other words, the end of the water outlet pipe 21 provided with the water outlet 213 extends into the first partition 121, and the outer side surface of the water outlet pipe 21 is sealingly connected to the inner side surface of the first partition 121. For example, the sealing connection is achieved through a sealing ring.

[0143] In a second aspect, an embodiment of the present utility model further provides a water purification device, including: a machine body and the water purification assembly as described above; the machine body has an installation cavity, and the water purification assembly is detachably disposed in the installation cavity.

[0144] Specifically, the water purification device may be an instant hot water dispenser, and the machine body may be provided with an installation port communicating with the installation cavity, and the capacitive deionization filter element 20 may be inserted into the installation cavity through the installation port.

[0145] Since the water purification device includes the water purification assembly, and the specific structure of the water purification assembly refers to the above embodiments, the water purification device of this embodiment includes all the technical solutions of the above embodiments. Therefore, it has at least all the beneficial effects obtained by all the technical solutions of the above embodiments, which will not be elaborated herein one by one.

[0146] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A water purification component, characterized in that, Comprising: A housing (1); A filter element assembly (2), disposed within the housing (1). There is a mutually isolated water outlet space (111) and an accommodation space (112) formed between the first end of the filter element assembly (2) and the inner wall of the housing (1). The accommodation space (112) is located outside the water outlet space (111). The filter element assembly (2) includes a core body, and the core body includes a pre-filter (23) and a capacitive deionization filter element (20). The pre-filter (23) is sleeved outside the capacitive deionization filter element (20). There is a gap between the outer side surface of the core body and the inner wall of the housing (1). The capacitive deionization filter element (20) has a water outlet (213) along its axial direction; Wherein, the housing (1) is provided with a water outlet port (102) communicating with the water outlet space (111) and an inlet port (101) communicating with the gap. The water outlet port (102) and the inlet port (101) are located on the same side of the housing (1). The water outlet (213) communicates with the water outlet space (111). The positive electrode conductor and the negative electrode conductor of the capacitive deionization filter element (20) are both disposed within the accommodation space (112). The positive electrode conductor and the negative electrode conductor are spaced apart and adapted to be connected to an external power source.

2. The water purification component according to claim 1, wherein The housing (1) is provided with a first through hole (103) and a second through hole (104) communicating with the accommodation space (112). The first through hole (103), the second through hole (104), the water outlet port (102) and the inlet port (101) are located on the same side of the housing (1). The positive electrode conductor sequentially passes through the accommodation space (112) and the first through hole (103). The negative electrode conductor sequentially passes through the accommodation space (112) and the second through hole (104).

3. The water purification component according to claim 2, characterized in that, A positioning structure is provided between the inner wall of the housing (1) and the outer side surface of the filter element assembly (2).

4. The water purification component according to claim 1, wherein The inner wall of the housing (1) is provided with a first partition (121) and a second partition (122). The second partition (122) is located outside the first partition (121). The first partition (121) and the first end of the filter element assembly (2) enclose the water outlet space (111). The first partition (121), the second partition (122) and the first end of the filter element assembly (2) enclose the accommodation space (112).

5. The water purification component according to claim 4, wherein The filter element assembly (2) further includes a first end cap (3). The first end cap (3) includes a side wall (31), a top wall (32) and a first glue-blocking wall (33) which are sequentially bent and connected. The side wall (31) is connected to the inner side surface of the second partition (122). The top wall (32) is clamped between the first end of the core body and the second partition (122). The first glue-blocking wall (33) is connected to the outer side surface of the core body. The positive electrode conductor and the negative electrode conductor are located within the area enclosed by the side wall (31) and the first partition (121).

6. The water purification component according to claim 5, wherein The filter element assembly (2) further includes an annular fixing seat (6). The annular fixing seat (6) is detachably arranged on the side wall (31). The annular fixing seat (6) is provided with a first positioning hole (611) adapted to the positive electrode conductor and a second positioning hole adapted to the negative electrode conductor. The positive electrode conductor is inserted through the first positioning hole (611), and the negative electrode conductor is inserted through the second positioning hole.

7. The water purification component according to claim 6, wherein One side of the annular fixing seat (6) facing the top wall (32) is provided with a clamping groove (621). The inner side surface of the side wall (31) is provided with a clamping buckle (311). The annular fixing seat (6) and the first end cover (3) are limited and matched in the circumferential direction through the clamping groove (621) and the clamping buckle (311).

8. The water purification component according to claim 6, characterized in that Each of the positive electrode conductor and the negative electrode conductor includes an electrical connecting member and a tab connected to the capacitive deionization filter element (20). The tab is detachably and electrically connected to the electrical connecting member. The electrical connecting member is sequentially inserted through the corresponding positioning holes.

9. The water purification component according to claim 1, wherein, The filter element assembly (2) further includes a second end cover (4). The second end cover (4) includes a bottom wall (41) and a second glue-blocking wall (42) bent and connected to the bottom wall (41). The bottom wall (41) is hermetically connected to the second end of the core body through a filling glue. The inner side surface of the second glue-blocking wall (42) is connected to the outer side surface of the core body.

10. The water purification component according to any one of claims 1 to 9, characterized in that, The capacitive deionization filter element (20) includes: a water outlet pipe (21) and an electrode assembly (22); The electrode assembly (22) is wound around the peripheral wall of the water outlet pipe (21). The inner wall of the pre-filter element (23) is attached to the peripheral wall of the electrode assembly (22). The water outlet pipe (21) has a water outlet channel (211) and a water passing hole (212) communicating with the water outlet channel (211). The water outlet (213) is formed in the water outlet channel (211), and the water passing hole (212) is arranged on the peripheral wall of the water outlet pipe (21).

11. The water purification component according to claim 10, characterized in that, The water outlet (213) is arranged at the first end of the water outlet pipe (21). The water passing hole (212) is arranged on the peripheral wall near the second end of the water outlet pipe (21). A diversion groove (214) is arranged on the peripheral wall of the water outlet pipe (21). A fluid communication is formed between the diversion groove (214) and the water passing hole (212).

12. The water purification component according to claim 10, characterized in that, The electrode assembly (22) includes: an insulating sheet (221) and at least two layers of electrode sheets (222). The insulating sheet (221) and the electrode sheets (222) are arranged in a laminated manner. The insulating sheet (221) is sandwiched between two adjacent layers of the electrode sheets (222); The electrode sheet (222) includes a current collector layer (2221) and an adsorption layer (2222), and the adsorption layer (2222) is provided on both the front and back sides of the current collector layer (2221); adjacent two layers of the electrode sheets (222) are respectively configured as a positive electrode sheet and a negative electrode sheet, the current collector layer (2221) of the positive electrode sheet is connected to the positive electrode conductor, the current collector layer (2221) of the negative electrode sheet is connected to the negative electrode conductor, and a water passing channel (2201) for accommodating the insulating sheet (221) is formed between the positive electrode sheet and the negative electrode sheet; The electrode assembly (22) correspondingly forms a water outlet end and a water inlet end at the inner and outer ends of the water outlet pipe (21); the water inlet end is communicated with the water outlet end through the water passing channel (2201), and the water outlet end extends to the peripheral wall of the water outlet pipe (21) and forms a fluid communication with the water passing hole (212).

13. The water purification component according to any one of claims 1 to 9, characterized in that, The pre-filter element (23) and the capacitive deionization filter element (20) are coaxially arranged; and / or The pre-filter element (23) includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element, or the pre-filter element (23) includes multiple filter elements, and the multiple filter elements are sleeved together in sequence from the inside to the outside, and each filter element includes any one of a PP cotton filter element, a carbon rod filter element or a carbon fiber filter element.

14. A water purification device, characterized in that, Comprising: A machine body and the water purification assembly according to any one of claims 1 to 13; The machine body has an installation cavity, and the water purification assembly is detachably arranged in the installation cavity.

Images