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 capacitive deionization filter element, the capacitive deionization filter element comprises a water outlet pipe, a flow guide pipe and an electrode assembly, the electrode assembly is wound around the peripheral wall of the water outlet pipe, and the two ends, in the axial direction of the water outlet pipe, of the electrode assembly are sealed; first water passing holes are formed in the peripheral wall of the water outlet pipe, a water outlet is formed in the first end of the water outlet pipe, and the second end of the water outlet pipe is closed; the flow guide pipe penetrates through the water outlet pipe, so that a water passing gap is formed between the flow guide pipe and the water outlet pipe; the peripheral wall of the first end of the flow guide pipe is in sealed connection with the inner wall of the water outlet pipe. A second water passing hole is formed between the second end of the flow guide pipe and the second end of the water outlet pipe. In the desalting process of the capacitive deionization filter element, bubbles generated in the filter element can be effectively discharged, the capacitive deionization filter element can be prevented from generating noise in the working process, and the water purification treatment effect of the capacitive deionization filter element is ensured.

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 quality of the effluent at different voltages, while retaining the ions beneficial to the human body and removing heavy metal ions.

[0003] In the related art, during the desalination work, if the voltage between the electrode plates of the capacitive deionization filter element fluctuates, air bubbles will appear in the filter element, and the generated air bubbles will cause the water pressure in the filter element to be unstable, resulting in noise generated by the capacitive deionization filter element during the water purification process and affecting the water purification treatment effect. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. For this purpose, the utility model provides a water purification component, which can effectively discharge the air bubbles generated in the filter element during the desalination process of the capacitive deionization filter element, not only can prevent the capacitive deionization filter element from generating noise during operation, but also ensure the water purification treatment effect of the capacitive deionization filter element.

[0005] The utility model also provides a water purification device.

[0006] The water purification component according to the first aspect embodiment of the utility model includes:

[0007] A capacitive deionization filter element, including a water outlet pipe, a diversion pipe and an electrode assembly, the electrode assembly is wound around the circumferential wall of the water outlet pipe, both ends of the electrode assembly along the axial direction of the water outlet pipe are sealed, the outside of the electrode assembly is used for receiving the input of raw water, and the inside of the electrode assembly is used for outputting purified water or waste water;

[0008] The circumferential wall of the water outlet pipe is provided with a first water passing hole, the first end of the water outlet pipe forms a water outlet, and the second end of the water outlet pipe is closed; the diversion pipe is arranged inside the water outlet pipe to form a water passing gap between the diversion pipe and the water outlet pipe; the circumferential wall of the first end of the diversion pipe is hermetically connected with the inner wall of the water outlet pipe, and a second water passing hole is formed between the second end of the diversion pipe and the second end of the water outlet pipe;

[0009] Wherein, the first water passing hole, the water passing gap, the second water passing hole, the inner cavity of the diversion pipe, and the water outlet are sequentially in fluid communication.

[0010] According to an embodiment of the present invention, a blocking member is provided in the water outlet pipe, and the blocking member is arranged at a position close to the second end of the water outlet pipe;

[0011] The peripheral wall of the first end of the diversion pipe is hermetically connected to the inner wall of the first end of the water outlet pipe, and a second water passing hole is formed between the second end of the diversion pipe and the blocking member.

[0012] According to an embodiment of the present invention, the blocking member includes:

[0013] A blocking plate, connected to the inner wall of the water outlet pipe;

[0014] A plurality of protrusions are arranged on the side of the blocking plate facing the water outlet. The plurality of protrusions are arranged at intervals in the circumferential direction. The second end of the diversion pipe abuts against at least part of the plurality of protrusions, and a second water passing hole is formed between adjacent two protrusions.

[0015] According to an embodiment of the present invention, the proportion of the axial distance between the blocking member and the second end of the water outlet pipe to the length of the water outlet pipe is not greater than 15%.

[0016] According to an embodiment of the present invention, there are a plurality of second water passing holes, and the sum of the water passing areas of the plurality of second water passing holes is not less than 20 mm2.

[0017] According to an embodiment of the present invention, 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 stacked manner, and the insulating sheet is sandwiched between adjacent two layers of electrode sheets;

[0018] The electrode sheet includes a current collector layer and an adsorption layer. The adsorption layer is provided on both the front and back sides of the current collector layer; adjacent two layers of electrode sheets are respectively configured as a positive electrode sheet and a negative electrode sheet, and a water passing channel for accommodating the insulating sheet is formed between the positive electrode sheet and the negative electrode sheet;

[0019] The inner and outer ends of the electrode assembly are respectively formed as a water outlet end and a water inlet end corresponding to the water outlet pipe; 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 is in fluid communication with the first water passing hole.

[0020] According to an embodiment of the present invention, adjacent two layers of electrode sheets are arranged opposite to each other in the stacking direction, and the insulating sheet and the electrode sheets are arranged in a staggered manner in the stacking direction, so that the electrode sheets are hidden between adjacent two layers of insulating sheets.

[0021] According to an embodiment of the present utility model, a plurality of groups of the first water passing holes are circumferentially arranged on the peripheral wall of the water outlet pipe, and each group of the first water passing holes is arranged along the axial direction of the water outlet pipe;

[0022] The number of the electrode plates is greater than two layers, so that a plurality of water passing channels are formed in the electrode assembly; the inner ends of the electrode assembly form a plurality of water outlet ends corresponding to the plurality of water passing channels, and the plurality of water outlet ends are oppositely arranged with the plurality of groups of the first water passing holes.

[0023] According to an embodiment of the present utility model, the water purification assembly further includes:

[0024] A housing having a water inlet port and a water outlet port, and the water inlet port and the water outlet port are located on the same side of the housing;

[0025] The capacitive deionization filter element is arranged in the housing, a containing space is formed between the first end of the capacitive deionization filter element and the inner wall of the housing, a water outlet space is formed between the second end of the capacitive deionization filter element and the inner wall of the housing, and the water outlet space and the containing space are oppositely arranged; a first gap is left between the outer side surface of the capacitive deionization filter element and the inner wall of the housing;

[0026] Wherein, the water inlet port is communicated with the first gap, and the water outlet, the water outlet space and the water outlet port are sequentially communicated; the positive electrode lug and the negative electrode lug of the capacitive deionization filter element both extend into the containing space, and the positive electrode lug and the negative electrode lug are arranged at intervals and are adapted to be connected with an external power supply.

[0027] According to an embodiment of the present utility model, the water purification assembly further includes:

[0028] A first end cover including a first side wall and a first cover body which are bent and connected, the first side wall is connected with the inner wall of the housing, the first cover body is connected with the first end of the capacitive deionization filter element, and the containing space is formed by enclosing between the first cover body, the first side wall and the inner wall of the housing;

[0029] The electrode assembly further includes a positive electrode lug connected to the positive electrode plate and a negative electrode lug connected to the negative electrode plate, and the first cover body is provided with a first through hole for the positive electrode lug to pass through and a second through hole for the negative electrode lug to pass through.

[0030] According to an embodiment of the present utility model, the first end cap further includes: a first rubber blocking wall bent and connected to the first cover body, an outer side surface of the first rubber blocking wall is hermetically connected to an inner wall of the housing, a first end between the first cover body and the capacitive deionization filter element is hermetically connected through a filling rubber, and the first rubber blocking wall is arranged outside a peripheral wall of the capacitive deionization filter element.

[0031] According to an embodiment of the present utility model, a partition is arranged on an inner wall of the housing, and a water outlet space is formed by enclosing between the partition and a second end of the capacitive deionization filter element.

[0032] According to an embodiment of the present utility model, the water purification assembly further includes:

[0033] A second end cap, including a second cover body and a second rubber blocking wall which are bent and connected, the second cover body is limited between a second end of the capacitive deionization filter element and a side of the partition away from the inner wall of the housing, a through hole is arranged on the second cover body, the water outlet penetrates through the through hole and is communicated with the water outlet space;

[0034] The second cover body is hermetically connected to the second end of the capacitive deionization filter element through a filling rubber, the second rubber blocking wall is arranged outside a peripheral wall of the capacitive deionization filter element, a second gap is left between an outer side surface of the second rubber blocking wall and the inner wall of the housing, and the water inlet port is communicated with the first gap through the second gap.

[0035] The water purification device according to an embodiment of the second aspect of the present utility model 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 arranged in the installation cavity.

[0036] One or more of the above technical solutions in the embodiments of the present utility model have at least one of the following technical effects: by arranging a diversion pipe in the water outlet pipe and arranging a second water passing hole between a second end of the diversion pipe and a second end of the water outlet pipe, and making the second water passing hole far away from the water outlet, this design can limit that the water body output from the inner side of the electrode assembly can only gradually converge towards the area where the second water passing hole is located after entering the water passing gap from the first water passing hole, then enter the diversion pipe through the second water passing hole, and finally be output from the water outlet under the guidance of the diversion pipe. During the flow of the water body, because the second water passing hole is far away from the water outlet, the flowing water body gradually converges towards the area where the second water passing hole is located, which will gradually squeeze the bubbles generated in the electrode assembly towards the area where the second water passing hole is located, and then be discharged together with the water body under the guidance of the diversion pipe, thereby effectively removing the bubbles appearing in the capacitive deionization filter element.

[0037] As can be seen from the above, in the process of desalination by the capacitive deionization filter element of the water purification component shown in the present utility model, the air bubbles generated inside the filter element can be effectively discharged, which can prevent the capacitive deionization filter element from generating noise during operation, ensure the stability of the internal electric field of the electrode assembly, and thus also ensure the water purification treatment effect of the capacitive deionization filter element.

[0038] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 is one of the structural schematic diagrams of the water purification component provided by the embodiment of the present utility model;

[0041] Figure 2 is the second structural schematic diagram of the water purification component provided by the embodiment of the present utility model;

[0042] Figure 3 is the third structural schematic diagram of the water purification component provided by the embodiment of the present utility model;

[0043] Figure 4 is the structural schematic diagram of the capacitive deionization filter element provided by the embodiment of the present utility model;

[0044] Figure 5 is the first structural schematic diagram of the assembly of the water outlet pipe and the diversion pipe provided by the embodiment of the present utility model;

[0045] Figure 6 is the second structural schematic diagram of the assembly of the water outlet pipe and the diversion pipe provided by the embodiment of the present utility model;

[0046] Figure 7 is provided by the embodiment of the present utility model Figure 6 partial enlarged schematic diagram of part K;

[0047] Figure 8 is the structural schematic diagram of winding the electrode assembly on the water outlet pipe provided by the embodiment of the present utility model;

[0048] Figure 9 is the structural schematic diagram of the first end cap provided by the embodiment of the present utility model;

[0049] Figure 10 It is a schematic structural diagram of the second end cover provided by an embodiment of the present utility model;

[0050] Figure 11 It is a schematic cross-sectional view of the stacked electrode assembly provided by an embodiment of the present utility model;

[0051] Figure 12 It is a schematic cross-sectional view of the electrode sheet provided by an embodiment of the present utility model;

[0052] Reference numerals:

[0053] 1. Housing; 101. Water inlet port; 102. Water outlet port; 111. Water outlet space; 112. Accommodation space; 121. Partition;

[0054] 2. Capacitive deionization filter element; 21. Water outlet pipe; 22. Electrode assembly; 23. Diversion pipe; 211. First water passing hole; 212. Water outlet; 201. Water passing gap; 202. Second water passing hole; 230. Plugging member; 2301. Plugging plate; 2302. Protrusion; 221. Insulating sheet; 222. Electrode sheet; 2201. Water passing channel; 2221. Current collector layer; 2222. Adsorption layer; 2001. Positive electrode tab; 2002. Negative electrode tab;

[0055] 3. First end cover; 31. First side wall; 32. First cover body; 33. First rubber blocking wall;

[0056] 4. Second end cover; 41. Second cover body; 42. Second rubber blocking wall;

[0057] 5. Power connection assembly; 51. Positive terminal; 52. Negative terminal. Detailed implementation manners

[0058] 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.

[0059] 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, and 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", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected to" 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 circumstances.

[0061] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0062] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] The following Figures 1 - 12 will, through specific embodiments and their application scenarios, provide a detailed description of the water purification component and the water purification device provided by the embodiments of the present utility model.

[0064] In the first aspect, as Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, the embodiments of the present utility model provide a water purification component, including: a capacitive deionization filter element 2;

[0065] The capacitive deionization filter element 2 includes a water outlet pipe 21, a flow guide pipe 23 and an electrode assembly 22. The electrode assembly 22 is wound around the peripheral wall of the water outlet pipe 21. The electrode assembly 22 is sealed at both ends along the axial direction of the water outlet pipe 21. 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 clean water or waste water.

[0066] The peripheral wall of the water outlet pipe 21 is provided with a first water hole 211, the first end of the water outlet pipe 21 forms a water outlet 212, and the second end of the water outlet pipe 21 is closed; the guide pipe 23 is inserted into the water outlet pipe 21 to form a water gap 201 between the guide pipe 23 and the water outlet pipe 21; the peripheral wall of the first end of the guide pipe 23 is sealedly connected to the inner wall of the water outlet pipe 21, and a second water hole 202 is formed between the second end of the guide pipe 23 and the second end of the water outlet pipe 21;

[0067] Among them, the first water flow hole 211, the water flow gap 201, the second water flow hole 202, the inner cavity of the guide pipe 23 and the water outlet 212 form fluid communication in sequence, and the outer diameter of the guide pipe 23 is smaller than the inner diameter of the outlet pipe 21 to form a water flow gap 201 between the guide pipe 23 and the outlet pipe 21.

[0068] 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.

[0069] 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.

[0070] Considering that the peripheral wall of the existing water outlet pipe 21 is usually densely provided with a plurality of water passing holes, the water body output from the inner side of the electrode assembly 22 will uniformly pass through each water passing hole and enter the water outlet channel. If air bubbles appear in the electrode assembly 22, the air bubbles may adhere to the surface of the positive electrode plate and / or the negative electrode plate, and the flowing water body will not act on the desorption of the air bubbles. However, in this application, a diversion pipe 23 is arranged in the water outlet pipe 21, and a second water passing hole 202 is arranged between the second end of the diversion pipe 23 and the second end of the water outlet pipe 21, so that the second water passing hole 202 is arranged far away from the water outlet 212. This design can limit the water body output from the inner side of the electrode assembly 22 to gradually converge towards the area where the second water passing hole 202 is located after entering the water passing gap 201 from the first water passing hole 211, and then enter the diversion pipe 23 through the second water passing hole 202, and finally be output from the water outlet 212 under the guidance of the diversion pipe 23. During the flow of the water body, since the second water passing hole 202 is arranged far away from the water outlet 212, the flowing water body gradually converges towards the area where the second water passing hole 202 is located, which will gradually squeeze the air bubbles generated in the electrode assembly 22 to the area where the second water passing hole 202 is located, and then be discharged together with the water body under the guidance of the diversion pipe 23, thereby effectively removing the air bubbles appearing in the capacitive deionization filter element 2.

[0071] As can be seen from the above, the water purification component shown in the present utility model can effectively discharge the air bubbles generated in the filter element during the desalination process of the capacitive deionization filter element 2, can prevent the capacitive deionization filter element 2 from generating noise during operation, ensures the stability of the internal electric field of the electrode assembly 22, and thus also ensures the water purification treatment effect of the capacitive deionization filter element 2.

[0072] It should be noted here that the capacitive deionization filter element 2 further includes a protective sleeve. For example, the protective sleeve is a cylindrical rubber film, and the protective sleeve is sleeved on the peripheral wall of the electrode assembly 22. A plurality of water passing openings 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 openings, and then the electrode assembly 22 performs desalination treatment on the received water body.

[0073] In some embodiments, as Figure 6 and Figure 7 shown, a plugging member 230 is arranged in the water outlet pipe 21, and the plugging member 230 is arranged at a position close to the second end of the water outlet pipe 21; the peripheral wall of the first end of the diversion pipe 23 is hermetically connected to the inner wall of the first end of the water outlet pipe 21, and a second water passing hole 202 is formed between the second end of the diversion pipe 23 and the plugging member 230.

[0074] It can be understood that the axial distance between the plugging member 230 and the second end of the water outlet pipe 21 is less than the axial distance between the plugging member 230 and the first end of the water outlet pipe 21.

[0075] The length of the diversion pipe 23 can be configured to be equal to the axial length between the plugging member 230 and the first end of the water outlet pipe 21. A sealing ring can be used to achieve a sealed connection between the peripheral wall of the first end of the diversion pipe 23 and the inner wall of the first end of the water outlet pipe 21. The second end of the diversion pipe 23 can be configured to abut against the plugging member 230. However, a gap is reserved between the second end of the diversion pipe 23 and the plugging member 230 to form the second water passing hole 202.

[0076] Further, as Figure 7 shown, the plugging member 230 includes: a plugging plate 2301 and a plurality of protrusions 2302; the plugging plate 2301 is connected to the inner wall of the water outlet pipe 21. For example, the periphery of the plugging plate 2301 is connected to the inner wall of the water outlet pipe 21; the plurality of protrusions 2302 are arranged on the side of the plugging plate 2301 facing the water outlet 212, and the plurality of protrusions 2302 are arranged at intervals in the circumferential direction. The second end of the diversion pipe 23 abuts against at least a part of the plurality of protrusions 2302, and a second water passing hole 202 is formed between two adjacent protrusions 2302.

[0077] It can be understood that since the plurality of protrusions 2302 are arranged at intervals in the circumferential direction, there are a plurality of second water passing holes 202. The plurality of second water passing holes 202 are defined to be arranged in the circumferential direction, and each second water passing hole 202 can achieve fluid communication between the water passing gap 201 and the inner cavity of the diversion pipe 23.

[0078] In some embodiments, in order to ensure the exhaust effect of the capacitive deionization filter element 2, the ratio of the axial distance between the plugging member 230 and the second end of the water outlet pipe 21 to the length of the water outlet pipe 21 is not greater than 15%.

[0079] It can be understood that since the second water passing hole 202 is formed between the second end of the diversion pipe 23 and the plugging member 230, the ratio of the axial length between the second water passing hole 202 and the water outlet 212 to the length of the water outlet pipe 21 is not greater than 15%.

[0080] Optionally, the length of the capacitive deionization filter element 2 is approximately 333 - 350 mm. The axial distance between the plugging member 230 and the second end of the water outlet pipe 21 can be set to be less than 50 mm, so that the second water passing hole 202 is as far away from the water outlet 212 of the capacitive deionization filter element 2 as possible, thereby ensuring the exhaust effect.

[0081] In some embodiments, there are a plurality of second water passing holes 202, and the sum of the water passing areas of the plurality of second water passing holes 202 is not less than 20 mm 2 . For example, the sum of the water passing areas of the plurality of second water passing holes 202 is 20 mm 2 , 25 mm 2 , 35 mm 2 and 50 mm 2Etc., this design avoids a large flow resistance when the water body passes through the second water passing hole 202, and prevents the second water passing hole 202 from restricting the flow of the water body.

[0082] In some embodiments, such as Figure 8 , Figure 10 and Figure 12 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 laminated manner, and the insulating sheet 221 is sandwiched between two adjacent layers of electrode sheets 222;

[0083] 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 passing channel 2201 for accommodating the insulating sheet 221 is formed between the positive electrode sheet and the negative electrode sheet;

[0084] The electrode assembly 22 correspondingly forms a water outlet end and a water inlet end at the inner and outer ends relative to 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 towards the peripheral wall of the water outlet pipe 21 and forms a fluid connection with the first water passing hole 211.

[0085] It can be understood that the insulating sheet 221 and the electrode sheets 222 are stacked in an alternating arrangement to realize that the insulating sheet 221 is sandwiched 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 in 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.

[0086] 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 realize the adsorption of ions in the raw water.

[0087] At the same time, the insulating sheet 221 can be made of a plastic material. The insulating sheet 221 is used to play a supporting role between the positive electrode sheet and the negative electrode sheet, not only preventing the positive electrode sheet and the negative electrode sheet from being short-circuited, but also ensuring that a water passing channel 2201 is formed between the positive electrode sheet and the negative electrode sheet.

[0088] In practical applications, the operation of the capacitive deionization filter element 2 includes an adsorption purification process and a desorption regeneration process. When adjacent two layers of electrode plates 222 are electrically connected to the positive and negative electrodes of the power supply and the power supply is started to supply power, the cations and anions in the raw water are attracted to the electrode plates 222 with opposite charges and adsorbed by the adsorption layer 2222 on the electrode plates 222. This operation process of the capacitive deionization filter element 2 is the adsorption purification process.

[0089] Correspondingly, when the power supply is stopped or a reverse voltage is applied to adjacent two layers of electrode plates 222, the ions adsorbed by the adsorption layer 2222 are detached into the water body of the water passing channel 2201. At this time, the water passing channel 2201 will output concentrated water with a higher ion concentration.

[0090] As can be seen from the above, for the capacitive deionization filter element 2 shown in this embodiment, by arranging the adsorption layers 2222 on the front and back sides of the current collector layer 2221, an integrated design of the electrode plates 222 is realized. Only by stacking the electrode plates 222 and the insulating sheets 221 in an alternating arrangement manner can the electrode assembly 22 be formed; this stacked arrangement design of the electrode assembly 22 simplifies the arrangement structure of the electrode assembly 22, facilitates processing and production, and is conducive to reducing production costs.

[0091] Meanwhile, in practical applications, only by electrically connecting adjacent two layers of electrode plates 222 to the positive and negative electrodes of the power supply can the ions in the raw water passing through the water passing channel 2201 be adsorbed, achieving the purpose of purifying the raw water; since the adsorption layers 2222 are provided on both sides of the current collector layer 2221 of each electrode plate 222, both sides of each electrode plate 222 can adsorb ions, thus ensuring the purification effect of the raw water to a certain extent. The capacitive deionization filter element 2 can effectively remove heavy metal ions in water and retain the beneficial ions required by the human body, meeting the needs of household water purification.

[0092] In some embodiments, in order to ensure the purification effect of the raw water, adjacent two layers of electrode plates 222 are arranged opposite to each other along the stacking direction to ensure as much as possible the coverage range of the electric field between adjacent two layers of electrode plates 222, and then based on the electric field between adjacent two layers of electrode plates 222, the anions, cations and other charged particles in the raw water are removed.

[0093] Furthermore, by arranging the insulating sheets 221 and the electrode plates 222 to be offset along the stacking direction, the electrode plates 222 are hidden between adjacent two layers of insulating sheets 221. This design not only ensures the electrical isolation between adjacent two layers of electrode plates 222, but also facilitates setting the water outlet end of the electrode assembly 22 at a position opposite to the first water passing hole 211 on the peripheral wall of the water outlet pipe 21 to ensure that the water passing channel 2201 in the electrode assembly 22 is in fluid communication with the water passing gap 201 inside the water outlet pipe 21.

[0094] Among them, as Figure 11 shown, the stacking direction is along the thickness direction of the insulating sheet 221 or the electrode sheet 222.

[0095] In some embodiments, as Figure 6 and Figure 8 shown, on the circumferential wall of the water outlet pipe 21, a plurality of groups of first water passing holes 211 are provided along the circumferential direction, and each group of first water passing holes 211 is arranged along the axial direction of the water outlet pipe 21;

[0096] The number of electrode sheets 222 is greater than two layers, 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 first water passing holes 211.

[0097] It can be understood that by setting the number of electrode sheets 222 to be greater than two layers, 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 2 can be purified simultaneously, improving the purification efficiency of the raw water.

[0098] At the same time, by setting the plurality of water outlet ends to be arranged opposite to the plurality of groups of first water passing holes 211, the smoothness of the water path between each water passing channel 2201 and the water passing gap 201 inside the water outlet pipe 21 can be ensured, which is beneficial to ensuring the purified water outlet flow rate of the capacitive deionization filter element 2.

[0099] In practical applications, on the premise of ensuring electrical isolation between adjacent two layers of electrode sheets 222, along the extending direction of the electrode sheets 222, the insulating sheet 221 and the ends of the electrode sheets 222 at one end of the electrode assembly 22 close to the water outlet pipe 21 are arranged in a staggered manner in sequence and are arranged along the circumferential direction of the water outlet pipe 21.

[0100] In some embodiments, as Figure 3 , Figure 4 and Figure 8 shown, in order to facilitate the connection of adjacent two electrode sheets 222 to the positive and negative electrodes of the power supply, the electrode assembly 22 further includes: a positive electrode tab 2001 and a negative electrode tab 2002; the positive electrode tab 2001 is electrically connected to the current collector layer 2221 of the positive electrode sheet; the negative electrode tab 2002 is electrically connected to the current collector layer 2221 of the negative electrode sheet.

[0101] Specifically, on one side edge of the current collector layer 2221 of each positive electrode sheet, a first extension part is provided, and on one side edge of the current collector layer 2221 of each negative electrode sheet, a second extension part is provided; when the electrode assembly 22 is wound around the circumferential wall of the central column, the first extension parts of the respective positive electrode sheets are stacked to form the positive electrode tab 2001, and the second extension parts of the respective negative electrode sheets are stacked to form the negative electrode tab 2002.

[0102] 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.

[0103] 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.

[0104] 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 easily damaged; if the current collector layer 2221 is too thick, the cost of the electrode sheet 222 is too high. Thus, 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.

[0105] Meanwhile, since the thickness of the adsorption layer 2222 of the electrode sheet 222 determines the adsorption capacity and adsorption speed, however, if the adsorption layer 2222 is too thick, the adsorption layer 2222 will crack during winding. Thus, 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.

[0106] In some embodiments, the insulating sheet 221 can be configured as a porous structure. For example, the insulating sheet 221 includes insulating fabric or insulating grid. The insulating fabric can be woven fabric or meltblown fabric.

[0107] Thus, although the insulating sheet 221 is disposed in the water passage 2201, however, 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.

[0108] 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, and thus the greater the resistance between two adjacent electrode sheets 222, resulting in 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.

[0109] In some embodiments, as Figure 1 , Figure 2 and Figure 3 shown, the water purification assembly further includes: a housing 1; the housing 1 has a water inlet port 101 and a water outlet port 102, and the water inlet port 101 and the water outlet port 102 are located on the same side of the housing 1;

[0110] A capacitive deionization filter element 2 is disposed in the housing 1. A receiving space 112 is formed between the first end of the capacitive deionization filter element 2 and the inner wall of the housing 1, and a water outlet space 111 is formed between the second end of the capacitive deionization filter element 2 and the inner wall of the housing 1. The water outlet space 111 and the receiving space 112 are oppositely arranged; a first gap is left between the outer side surface of the capacitive deionization filter element 2 and the inner wall of the housing 1.

[0111] Wherein, the water inlet port 101 is communicated with the first gap, and the water outlet 212, the water outlet space 111 and the water outlet port 102 are communicated in sequence; the positive electrode lug 2001 and the negative electrode lug 2002 of the capacitive deionization filter element 2 both extend into the receiving space 112, and the positive electrode lug 2001 and the negative electrode lug 2002 are arranged at intervals and are adapted to be connected to an external power source.

[0112] It can be understood that the housing 1 is columnar, a receiving cavity is provided in the housing 1, and the capacitive deionization filter element 2 is installed in the receiving cavity and is configured to be coaxially arranged with the housing 1.

[0113] A receiving space 112 is formed between the first end of the capacitive deionization filter element 2 and the inner wall of the first end of the housing 1, and a water outlet space 111 is formed between the second end of the capacitive deionization filter element 2 and the inner wall of the second end of the housing 1; the water inlet port 101 and the water outlet port 102 are respectively located at the second end of the housing 1 and are communicated with the receiving cavity.

[0114] Since the positive pole ear 2001 and the negative pole ear 2002 of the capacitor deionization filter element 2 are arranged in the accommodating space 112, and the water outlet 212 of the capacitor deionization filter element 2 is arranged in the water outlet space 111, this design is based on the isolated water outlet space 111 and the accommodating space 112, thereby realizing the water-electricity isolation of the water purification component and ensuring the reliability of the water purification work of the water purification component.

[0115] like Figure 3 As shown, a power connection assembly 5 can be arranged in the accommodation space 112, and the power connection assembly 5 includes a positive terminal 51 and a negative terminal 52, at least part of the positive terminal 51 and at least part of the negative terminal 52 are exposed outside the housing 1, the positive terminal 51 is electrically connected to the positive pole tab 2001 of the electrode assembly 22, and the negative terminal 52 is electrically connected to the negative pole tab 2002 of the electrode assembly 22. This design facilitates the external power supply to apply voltage to the positive and negative plates through the power connection assembly 5.

[0116] In some embodiments, Figure 2 , Figure 3 and Figure 9 As shown, the water purification component also includes: a first end cover 3; the first end cover 3 includes a first side wall 31 and a first cover body 32 that are bent and connected, the first side wall 31 is connected to the inner wall of the housing 1, the first cover body 32 is connected to the first end of the capacitor deionization filter element 2, and the first cover body 32, the first side wall 31 and the inner wall of the housing 1 enclose a containing space 112;

[0117] The electrode assembly 22 further includes a positive electrode tab 2001 connected to the positive electrode sheet and a negative electrode tab 2002 connected to the negative electrode sheet. The first cover 32 is provided with a first through hole for the positive electrode tab 2001 to pass through and a second through hole for the negative electrode tab 2002 to pass through.

[0118] It can be understood that the first cover body 32 is disc-shaped, and the first side wall 31 is extended circumferentially relative to the central axis of the capacitor deionization filter element 2; the first side wall 31 is arranged on the side of the first cover body 32 away from the capacitor deionization filter element 2, and abuts against the inner wall of the first end of the shell 1, so that the first cover body 32, the first side wall 31 and the inner wall of the shell 1 enclose a containing space 112.

[0119] In some embodiments, Figure 2 , Figure 3 and Figure 9As shown, the first end cap 3 further includes: a first glue-blocking wall 33 bent and connected to the first cover body 32. The outer side surface of the first glue-blocking wall 33 is sealingly connected to the inner wall of the housing 1. The first cover body 32 and the first end of the capacitive deionization filter element 2 are sealingly connected through a filling glue. The first glue-blocking wall 33 is arranged outside the peripheral wall of the capacitive deionization filter element 2. For example, the inner side surface of the first glue-blocking wall 33 is attached to the peripheral wall of the capacitive deionization filter element 2. Of course, the inner side surface of the first glue-blocking wall 33 and the peripheral wall of the capacitive deionization filter element 2 may also be arranged at intervals.

[0120] It can be understood that the filling glue forms a sealing glue layer at the first end of the capacitive deionization filter element 2, and the first cover body 32 is attached to the surface of the sealing glue layer to achieve the sealing of the first end of the capacitive deionization filter element 2.

[0121] The first glue-blocking wall 33 is arranged at the outer edge of the first cover body 32 and extends circumferentially relative to the center of the first cover body 32. The inner diameter of the first glue-blocking wall 33 is adapted to the diameter of the capacitive deionization filter element 2. The first glue-blocking wall 33 is used to prevent the filling glue from overflowing to the peripheral wall of the capacitive deionization filter element 2.

[0122] A first support rib may be arranged on the side surface of the first cover body 32 facing the capacitive deionization filter element 2. The first support rib may be configured to extend radially along the capacitive deionization filter element 2. The first support rib is used to ensure the thickness of the filling glue filled at the first end of the capacitive deionization filter element 2 and is beneficial to ensuring the forming quality of the filling glue.

[0123] Among them, by setting the outer side surface of the first glue-blocking wall 33 to be sealingly connected to the inner wall of the housing 1, water can be prevented from entering the accommodation space 112 formed by enclosing between the first cover body 32, the first side wall 31, and the inner wall of the housing 1.

[0124] In some embodiments, as Figure 3 shown, a partition 121 is arranged on the inner wall of the housing 1. The partition 121 and the second end of the capacitive deionization filter element 2 enclose an outlet space 111.

[0125] It can be understood that the partition 121 extends circumferentially relative to the water outlet port 102. The peripheral wall of the water outlet 212 of the capacitive deionization filter element 2 is sealingly connected to the inner side surface of the partition 121, so that the partition 121 and the second end of the capacitive deionization filter element 2 enclose an outlet space 111.

[0126] In some embodiments, as Figure 2 、 Figure 3 and Figure 10As shown in the figure, the water purification assembly further includes: a second end cap 4, which includes a second cover body 41 and a second rubber blocking wall 42 connected by bending. The second cover body 41 is limited between the second end of the capacitive deionization filter element 2 and the side of the partition plate 121 away from the inner wall of the housing 1. The second cover body 41 is provided with a through hole, and the water outlet 212 passes through the through hole and communicates with the water outlet space 111;

[0127] The second cover body 41 is hermetically connected to the second end of the capacitive deionization filter element 2 by filling glue. The second rubber blocking wall 42 is arranged on the outer side of the peripheral wall of the capacitive deionization filter element 2. For example, the inner side surface of the second rubber blocking wall 42 fits against the peripheral wall of the capacitive deionization filter element 2, and there is a second gap between the outer side surface of the second rubber blocking wall 42 and the inner wall of the housing 1. The water inlet port 101 communicates with the first gap through the second gap.

[0128] It can be understood that the filling glue forms a sealing glue layer at the second end of the capacitive deionization filter element 2. The second rubber blocking wall 42 is arranged on the outer edge of the second cover body 41 and extends circumferentially relative to the water outlet 212. The inner diameter of the second rubber blocking wall 42 is adapted to the diameter of the capacitive deionization filter element 2.

[0129] A plurality of ribs can be arranged on the outer side surface of the second rubber blocking wall 42. The plurality of ribs are arranged circumferentially along the second rubber blocking wall 42 and abut against the inner wall of the housing 1, so as to form a second gap between the outer side surface of the second rubber blocking wall 42 and the inner wall of the housing 1. Of course, a plurality of ribs can also be arranged on the inner wall of the housing 1. The plurality of ribs are arranged circumferentially relative to the axis where the water outlet 212 is located and abut against the outer side surface of the second rubber blocking wall 42. This design can also form a second gap between the outer side surface of the second rubber blocking wall 42 and the inner wall of the housing 1.

[0130] Further, in order to ensure the sealing effect of the second end of the capacitive deionization filter element 2, a second support rib is provided on the side surface of the second cover body 41 facing the capacitive deionization filter element 2. The second support rib can be configured to extend radially along the capacitive deionization filter element 2. The second support rib is used to ensure the filling thickness of the filling glue at the second end of the capacitive deionization filter element 2 and is beneficial to ensuring the molding quality of the filling glue.

[0131] In a second aspect, an embodiment of the present invention further provides a water purification device, including: a body and the water purification assembly as described above; the body has an installation cavity, and the water purification assembly is detachably arranged in the installation cavity.

[0132] Specifically, the water purification device can be an instant hot water dispenser. The body can be provided with an installation port communicating with the installation cavity, and the capacitive deionization filter element 2 can be inserted into the installation cavity through the installation port.

[0133] Since the water purification device includes a water purification component, and the specific structure of the water purification component refers to the above-mentioned embodiments, the water purification device of this embodiment includes all the technical solutions of the above-mentioned embodiments. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered within the scope of the claims of the present invention.

Claims

1. A water purification component, characterized in that, Comprising: A capacitive deionization filter element (2), including a water outlet pipe (21), a diversion pipe (23) and an electrode assembly (22), wherein 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 outside of the electrode assembly (22) is used for receiving the input of raw water, and the inside of the electrode assembly (22) is used for outputting purified water or wastewater; The peripheral wall of the water outlet pipe (21) is provided with first water passing holes (211), the first end of the water outlet pipe (21) forms a water outlet (212), and the second end of the water outlet pipe (21) is closed; the diversion pipe (23) is arranged inside the water outlet pipe (21) to form a water passing gap (201) between the diversion pipe (23) and the water outlet pipe (21); the peripheral wall of the first end of the diversion pipe (23) is hermetically connected to the inner wall of the water outlet pipe (21), and a second water passing hole (202) is formed between the second end of the diversion pipe (23) and the second end of the water outlet pipe (21); Wherein, the first water passing holes (211), the water passing gap (201), the second water passing holes (202), the inner cavity of the diversion pipe (23) and the water outlet (212) are sequentially in fluid communication.

2. The water purification component according to claim 1, characterized in that, A plugging member (230) is arranged inside the water outlet pipe (21), and the plugging member (230) is arranged at a position close to the second end of the water outlet pipe (21); The peripheral wall of the first end of the diversion pipe (23) is hermetically connected to the inner wall of the first end of the water outlet pipe (21), and the second water passing hole (202) is formed between the second end of the diversion pipe (23) and the plugging member (230).

3. The water purification component according to claim 2, wherein The plugging member (230) includes: A plugging plate (2301) connected to the inner wall of the water outlet pipe (21); A plurality of protrusions (2302) arranged on the side of the plugging plate (2301) facing the water outlet (212), the plurality of protrusions (2302) are arranged at intervals along the circumferential direction, the second end of the diversion pipe (23) abuts against at least part of the plurality of protrusions (2302), and the second water passing hole (202) is formed between two adjacent protrusions (2302).

4. The water purification component according to claim 2, characterized in that The proportion of the axial distance between the plugging member (230) and the second end of the water outlet pipe (21) to the length of the water outlet pipe (21) is not greater than 15%.

5. The water purification component according to claim 1, wherein A plurality of the second water passing holes (202) are provided, and the sum of the water passing areas of the plurality of the second water passing holes (202) is not less than 20 mm 2 .

6. The water purification component according to any one of claims 1 to 5, 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, and 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 arranged on both the front and back sides of the current collector layer (2221); two adjacent layers of the electrode sheets (222) are respectively configured as a positive electrode sheet and a negative electrode sheet, 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) is correspondingly formed as a water outlet end and a water inlet end with respect to 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 towards the peripheral wall of the water outlet pipe (21) and forms a fluid communication with the first water passing hole (211).

7. The water purification component according to claim 6, wherein Adjacent two layers of the electrode sheets (222) are oppositely arranged along the stacking direction, and the insulating sheets (221) and the electrode sheets (222) are arranged in a staggered manner along the stacking direction, so that the electrode sheets (222) are hidden between adjacent two layers of the insulating sheets (221).

8. The water purification component according to claim 6, characterized in that A plurality of groups of the first water passing holes (211) are arranged on the peripheral wall of the water outlet pipe (21) along the circumferential direction, and each group of the first water passing holes (211) is arranged along the axial direction of the water outlet pipe (21). The number of the electrode sheets (222) is greater than two, so that a plurality of water passing channels (2201) are formed in the electrode assembly (22); the inner end of the electrode assembly (22) forms a plurality of water outlet ends corresponding to the plurality of water passing channels (2201), and the plurality of water outlet ends are oppositely arranged with respect to the plurality of groups of the first water passing holes (211).

9. The water purification component according to claim 6, wherein, The water purification assembly further includes: A housing (1) having a water inlet port (101) and a water outlet port (102), and the water inlet port (101) and the water outlet port (102) are located on the same side of the housing (1). The capacitive deionization filter element (2) is arranged in the housing (1), a receiving space (112) is formed between the first end of the capacitive deionization filter element (2) and the inner wall of the housing (1), a water outlet space (111) is formed between the second end of the capacitive deionization filter element (2) and the inner wall of the housing (1), and the water outlet space (111) and the receiving space (112) are oppositely arranged; a first gap is left between the outer side surface of the capacitive deionization filter element (2) and the inner wall of the housing (1). Wherein, the water inlet port (101) is communicated with the first gap, the water outlet (212), the water outlet space (111) and the water outlet port (102) are communicated in sequence; the positive electrode tab (2001) and the negative electrode tab (2002) of the capacitive deionization filter element (2) both extend into the receiving space (112), and the positive electrode tab (2001) and the negative electrode tab (2002) are arranged at intervals and are adapted to be connected to an external power supply.

10. A water purification device, characterized in that, Including: A machine body and the water purification assembly according to any one of claims 1 to 9; the machine body has an installation cavity, and the water purification assembly is detachably arranged in the installation cavity.

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